CN108030610A - The self-locking sick bed that a kind of hospital uses - Google Patents

Abstract

The invention belongs to sick bed technical field, more particularly to the self-locking sick bed that a kind of hospital uses, it includes sick bed body, walking mechanism, when the sick bed that people are designed using the present invention, when user wants to promote sick bed, drives the traveling wheel on sick bed to rotate；Traveling wheel, which rotates, will cause self-locking frizzen to move up；Friction i.e. between self-locking frizzen and ground disappears；I.e. sick bed can be with automatic moving；Self-locking is just needed after sick bed stops；At this time under the action of scroll spring, first gear will rotate backward；First gear rotates backward will be so that self-locking frizzen be returned on original position, and triggering ring gear is also returned on original position；At this time so that self-locking frizzen has larger frictional force with ground under the action of the first compression spring；Self-locking state is in by self-locking frizzen and the friction sick bed on ground；The patient on sick bed is prevented to be given a shock or collide and injured again with other articles and other patients.

Description

The self-locking sick bed that a kind of hospital uses

Technical field

The invention belongs to sick bed technical field, more particularly to the self-locking sick bed that a kind of hospital uses.

Background technology

In present hospital, Mobile sickbed is often required for when transporting patient, just needs sick bed to move at this time It is dynamic；But just it is required that sick bed remains static after sick bed stopping；If sick bed is moved at this time；It is possible to make The patient obtained on sick bed is given a shock or collides with other articles and other patients, is pole so for some patients It is not suitable for, and especially for the postoperative patient for needing to nurse of Cardiological, the vibrations of reduction patient that should be, prevent art as far as possible Wound afterwards splits again due to shaking, rocking.A kind of so sick bed in self-locking when sick bed remains static of design It is necessary.

The present invention designs the self-locking sick bed that a kind of hospital uses and solves the problems, such as above.

The content of the invention

To solve drawbacks described above of the prior art, the present invention discloses the self-locking sick bed that a kind of hospital uses, it is to use Following technical scheme is realized.

The self-locking sick bed that a kind of hospital uses, it is characterised in that：It includes sick bed body, walking mechanism, wherein four rows Mechanism is walked to be separately mounted on four corners of sick bed body upper bed board downside.

Above-mentioned walking mechanism include traveling wheel, supporting rod, mounting shell, annular guide channel, rotation slot, support ring, fixed hub, Trigger drive rod, rotation axis, the first angular wheel, driving spring, the first compression spring, spacing ring, self-locking frizzen, triggering tooth Ring, screw thread ring set, support shaft, ring set support, supporting block, spring fixation support, first rotating shaft, first gear, second gear, 3rd gear, scroll spring, torque limiter, freewheel clutch, first axle support, the first axis hole, Triaxial hole, the second axis Hole, the first installation cavity, triggering rod aperture, the second installation cavity, the support of the second axis, turn to converter, the second shaft, the 3rd shaft, the Three axis supports, translator support, scroll spring installation support, annular guide block, guide block, axle sleeve mounting groove, guide groove, gear installation It is hole, the 4th shaft, the 5th shaft, support mounting blocks, supporting linkage, fixture block, the second limit card block, limited block, first spacing One end of fixture block, wherein supporting rod is provided with rotation slot；Annular guide channel is provided with the disc of rotation slot；Supporting rod is not provided with rotation slot One end be installed on bed body body upper bed board downside on；Axle sleeve mounting groove is provided with the end face of rotation axis side；Rotation axis Periphery on annular guide block is installed；Rotation axis is fitted on supporting rod by annular guide block and annular guide channel；Peace Dress shell is U-shape；The second installation cavity is provided with the inside of mounting shell；The first axis hole is provided with the upper surface of second installation cavity；Second Triggering rod aperture is provided with the lower face of installation cavity；Two supporting blocks are symmetrically mounted on the end face of mounting shell；Two supporting blocks Triaxial hole and the second axis hole are had on a upper opposite side end face；It is provided with the inside of a supporting block of the second axis hole and opens There is the first installation cavity；First installation cavity is communicated with the second installation cavity and the second axis hole respectively；Mounting shell is installed under rotation axis End；There is internal thread on the inner headed face of fixed hub；In the axle sleeve mounting groove of fixed hub installation on the rotating shaft；Fixed hub Lower end be located at the inner side of mounting shell through the first axis hole on mounting shell；There is outer spiral shell on the periphery of triggering drive rod one end Line；Trigger and two guide blocks are equably circumferentially installed on the periphery of the drive rod other end；Triggering drive rod is not installed with guide block One end be fitted to by internal thread on the external screw thread on its periphery and fixed hub inner headed face in fixed hub；Touch One end that guide block is provided with hair drive rod is located in mounting shell；It is circumferential on the inner headed face of first angular wheel to be equably provided with two A guide groove；First angular wheel is installed on the inside of mounting shell by support ring, and the first angular wheel passes through two guide grooves and two The cooperation of a guide block is on triggering drive rod；One end of driving spring is installed on the lower end of triggering drive rod；Driving spring The other end is provided with self-locking frizzen；The lower end of self-locking frizzen is located at the outside of mounting shell through triggering rod aperture；Spring is fixed One end of support is annular shape；Spring fixes support installed in the inner side of mounting shell；One end of first compression spring is installed on bullet Spring fixes the downside of the circular one end of support；First compression spring is nested in the upper end of self-locking frizzen；The inner headed face of spacing ring Upper circumferential direction is equably provided with two fixture blocks；Spacing ring is installed on the lower end of the first compression spring；Two the first limit card block weeks To being uniformly mounted on the periphery of self-locking frizzen and on the inside of the mounting shell；Two the first limit card blocks respectively with two Fixture block coordinates；Limited block is installed on the periphery of self-locking frizzen；Second limit card block is installed on the second peace on the inside of mounting shell On the lower face behaveing affectedly；Second limit card block coordinates with limited block；Screw thread ring set is installed on the inside of mounting shell by ring set support； There is internal thread on the inner headed face of screw thread ring set；Triggering on the periphery of ring gear has external screw thread；On the periphery for triggering ring gear With teeth；Triggering ring gear is fitted to by the external screw thread on its periphery and the internal thread on screw thread ring set inner headed face On the inside of mounting shell, and positioned at the downside of spacing ring；Mounting blocks are supported to be installed on the inner side of mounting shell by supporting linkage；5th One end of shaft is installed on the one side of supporting block；3rd gear is divided into cone increment and cylinder increment；3rd gear is installed on In 5th shaft；3rd gear is engaged by cylinder increment thereon with the teeth on triggering ring gear periphery；4th shaft One end is installed on the another side of supporting block；Second gear is divided into cone increment and cylinder increment；Second gear is installed on the 4th In shaft；Second gear is engaged by cone increment thereon with the cone increment on the 3rd gear；One end of first rotating shaft has cone Tooth；First rotating shaft is installed in mounting shell by first axle support；Moment of torsion limit is installed on the periphery of the first rotating shaft other end Device processed；Freewheel clutch is installed on the periphery of torque limiter；First gear is divided into cylinder increment and back taper increment；Back taper Pinion mounting holes are provided with the side of increment；First gear is fitted to first by pinion mounting holes and freewheel clutch In shaft；First gear is engaged by cylinder increment thereon with the cylinder increment in first gear；First gear passes through thereon Back taper increment engaged with the first angular wheel；Scroll spring installation support is installed in the inner side of mounting shell；The Inner of scroll spring End is installed in first gear on the side of cylinder increment；The outer end of scroll spring the fixed peace of support is installed by scroll spring Dress；One end of second shaft has cone tooth；Second shaft is installed in mounting shell by the support of the second axis；Second shaft passes through it On cone tooth engaged with the cone tooth in first rotating shaft；Steering converter is installed on by translator support and is provided with the first installation cavity The inner side of one supporting block；Converter is turned to be connected with the second shaft；One end of 3rd shaft has cone tooth；3rd shaft passes through The support of 3rd axis is installed on the inner side for a supporting block for being provided with the first installation cavity；The other end of 3rd shaft is with turning to converter Connection；Supporting one end of shaft has cone tooth；The one end of support shaft with cone tooth, which is installed on, is not provided with the first installation cavity In Triaxial hole in one supporting block；One end that support shaft has cone tooth passes through a supporting block for being provided with the first installation cavity On the second axis hole be located in the first installation cavity；Support shaft is engaged by cone tooth thereon with the cone tooth in the 3rd shaft；OK Wheel is walked to be installed in support shaft and between two supporting blocks.

Above-mentioned steering variator includes converter shell, converter output shaft, converter input shaft, the 3rd installation cavity, first Shaft hole, the second shaft hole, the 4th installation cavity, the 4th shaft hole, the 5th installation cavity, the 5th shaft hole, guide groove, the 4th tooth Wheel, the 5th gear, the 6th gear, the 6th shaft, the 7th gear, eighth gear, the 9th gear, the 7th shaft, eighth-turn axis, Two compression springs, the tenth gear, the 9th shaft, the 11st gear, the 3rd compression spring, the 12nd shaft, the 12nd gear, the One guide pad, the second guide pad, are wherein provided with the 3rd installation cavity on the inside of variator shell one end；Converter shell is provided with the 3rd installation First rotating shaft hole is provided with one side end face of chamber；First rotating shaft hole is communicated with the 3rd installation cavity；Is provided with the inside of converter shell Four installation cavitys；4th installation cavity is provided with the second shaft hole on a side end face of the 3rd installation cavity；4th installation cavity is away from Two guide grooves are provided with the end face of three installation cavity sides；The interior survey away from the 3rd installation cavity one end is provided with the 5th on converter shell Installation cavity；5th installation cavity is provided with the 4th shaft hole on the end face of the 4th installation cavity side；4th shaft hole and the 4th peace It behave affectedly and communicates；The 5th shaft hole of perforation is provided with 5th end face of the installation cavity away from the 4th installation cavity side；Converter shell leads to Cross translator support and be installed on the supporting block inner side for being provided with the first installation cavity；Converter input shaft is pacified by first rotating shaft hole On converter shell；Converter input shaft is connected with the 3rd shaft；5th gear be installed on converter input shaft on and the 5th Gear is located in the 3rd installation cavity on converter shell；7th shaft is installed in converter shell by the second shaft hole；4th Gear is installed on one end of the 7th shaft and the 4th gear is located in the 3rd installation cavity on converter shell；4th gear and the 5th Gear engages；9th gear is installed on the other end of the 7th shaft and the 9th gear is located at the 4th installation cavity on converter shell It is interior；One end of 12nd shaft is provided with the first guide pad；12nd shaft passes through two in the first guide pad and converter shell One of guide groove is fitted in the 4th installation cavity in guide groove；Pacify between first guide pad and corresponding guide groove Equipped with the 3rd compression spring；12nd gear is installed in the 12nd shaft；12nd gear and the 9th gear coordinate；Eighth-turn One end of axis is provided with the second guide pad；Eighth-turn axis passes through another in two guide grooves in the second guide pad and converter shell Guide groove is fitted in the 4th installation cavity；Second compression bullet is installed between the second guide pad and corresponding guide groove Spring；Tenth gear is installed on eighth-turn axis；Tenth gear and the 9th gear coordinate；9th shaft is installed on the 4th installation cavity On end face；11st gear is installed in the 9th shaft；11st gear and the tenth gear coordinate；6th shaft passes through the 4th turn Axis hole is installed in converter shell；Eighth gear is installed on one end of the 6th shaft and in the 4th installation cavity；Eighth gear Coordinate with the 12nd gear；Eighth gear is engaged with the 11st gear；7th gear is installed on the other end of the 6th shaft and position In in the 5th installation cavity；Converter output shaft is installed on converter shell by the 5th shaft hole；6th gear is installed on conversion On device output shaft and in the 5th installation cavity；6th gear is engaged with the 7th gear；Converter output shaft and the second shaft connect Connect.

The above-mentioned guide direction with the tenth corresponding guide groove of gear is connected phase with the 9th gear and the tenth gear centre It is mutually vertical；It is connected mutually with the 9th gear and the 12nd gear centre with the guide direction of the 12nd corresponding guide groove of gear Vertically.

Further as this technology is improved, and above-mentioned sick bed first limit card block under self-locking state is located at the upper of spacing ring Side.

Further as this technology is improved, and is connected between above-mentioned annular guide block and annular guide channel by bearing fit.

Further as this technology is improved, and above-mentioned sick bed is between self-locking state lower position block and limit card block into 90 Spend angle.

Further as this technology is improved, and above-mentioned driving spring is extension spring.

Relative to traditional sick bed technology, sick bed that the present invention designs can be by identifying the rotation shape of traveling wheel on sick bed State controls the locking state of sick bed traveling wheel, so as to control the movement and stopping of sick bed.

Converter input shaft is installed on converter shell by first rotating shaft hole in the present invention；Converter input shaft and the 3rd Shaft connects；5th gear is installed on converter input shaft；7th shaft is installed in converter shell by the second shaft hole； 4th gear is installed on one end of the 7th shaft；4th gear is engaged with the 5th gear；9th gear is installed on the 7th shaft The other end；One end of 12nd shaft is provided with the first guide pad；12nd shaft passes through in the first guide pad and converter shell One of guide groove is fitted in the 4th installation cavity in two guide grooves；First guide pad and corresponding guide groove it Between be provided with the 3rd compression spring；12nd gear is installed in the 12nd shaft；12nd gear and the 9th gear coordinate；The One end of eighth-turn axis is provided with the second guide pad；Eighth-turn axis passes through another in two guide grooves in the second guide pad and converter shell One guide groove is fitted in the 4th installation cavity；Second compression is installed between the second guide pad and corresponding guide groove Spring；Tenth gear is installed on eighth-turn axis；Tenth gear and the 9th gear coordinate；9th shaft is installed on the 4th installation cavity End face on；11st gear is installed in the 9th shaft；11st gear and the tenth gear coordinate；6th shaft passes through the 4th Shaft hole is installed in converter shell；Eighth gear is installed on one end of the 6th shaft；Eighth gear coordinates with the 12nd gear； Eighth gear is engaged with the 11st gear；7th gear is installed on the other end of the 6th shaft；Converter output shaft passes through the 5th Shaft hole is installed on converter shell；6th gear is installed on converter output shaft；6th gear is engaged with the 7th gear；Become Parallel operation output shaft is connected with the second shaft；When the 3rd shaft rotates；3rd shaft, which rotates, can drive converter input shaft to rotate； Converter input shaft, which rotates, drives the 5th gear to rotate；5th gear, which rotates, drives the 4th gear to rotate；4th gear rotates band Dynamic 7th shaft rotates；7th shaft, which rotates, drives the 9th gear to rotate；The 12nd gear is driven to rotate when the 9th gear rotates When；12nd gear, which rotates, to drive eighth gear to rotate；Eighth gear, which rotates, can drive the 6th shaft to rotate；6th shaft turns It is dynamic to drive the 7th gear to rotate；7th gear, which rotates, drives the 6th gear to rotate；6th gear, which rotates, drives converter output shaft Rotate；Converter output shaft, which rotates, drives the second shaft to rotate；When the 9th gear, which rotates, drives the tenth gear to rotate；Tenth tooth Wheel rotation can drive the 11st gear to rotate；11st gear, which rotates, to drive eighth gear to rotate；Eighth gear, which rotates, to be driven 6th shaft rotates；6th shaft, which rotates, drives the 7th gear to rotate；7th gear, which rotates, drives the 6th gear to rotate；6th tooth Wheel, which rotates, drives converter output shaft to rotate；Converter output shaft, which rotates, drives the second shaft to rotate；In the present invention with the tenth tooth The guide direction for taking turns corresponding guide groove is connected and is mutually perpendicular to the 9th gear and the tenth gear centre；With the 12nd gear phase The guide direction of corresponding guide groove is connected and is mutually perpendicular to the 9th gear and the 12nd gear centre.When the 9th gear drives the When 12 gears rotate, the rotation of the 9th gear can give the tenth gear along corresponding guide groove guiding side by teeth thereon To a thrust；So that the tenth gear drives eighth-turn axis along corresponding guide groove towards being provided with the second compression spring Move side；Tenth gear movement will cause the tenth gear to be out of gear with the 9th gear and the 11st；9th gear at this time Rotation would not drive the tenth gear to rotate；The rotation of the 11st gear will not cause the tenth gear and the 9th gear at the same time Influence；When the 9th gear drives the tenth gear to rotate, the 9th gear, which rotates, to give the 12nd gear edge by teeth thereon A thrust of corresponding guide groove guide direction；So that the 12nd gear drives the 12nd shaft along corresponding guiding Groove is moved towards the side for being provided with the 3rd compression spring；12nd gear movement will cause the 12nd gear and the 9th gear Disengaged with eighth gear；The 9th gear, which rotates, at this time would not drive the 12nd gear to rotate；The rotation of eighth gear at the same time 12nd gear and the 9th gear will not be impacted；I.e. no matter the 9th gear be it is clockwise drive the tenth gear rotate or Driving the 12nd gear to rotate counterclockwise can all cause eighth gear to rotate；And pass through the tenth gear, the 11st gear and the tenth The rotation direction of the transmission eighth gear of two gears is constant all the time；That is the rotation direction of the second shaft remains constant.

Supporting rod is not provided with one end of rotation slot on the downside of bed body body upper bed board in the present invention；Rotation axis Pass through being fitted on supporting rod for annular guide block and annular guide channel；Mounting shell is installed on the lower end of rotation axis；Fixed hub In the axle sleeve mounting groove of installation on the rotating shaft；One end that triggering drive rod is not installed with guide block passes through the outer spiral shell on its periphery Internal thread is fitted in fixed hub on line and fixed hub inner headed face；First angular wheel is installed on by support ring On the inside of mounting shell, and the first angular wheel is located on triggering drive rod by the cooperation of two guide grooves and two guide blocks；Drive bullet One end of spring is installed on the lower end of triggering drive rod；The other end of driving spring is provided with self-locking frizzen；Self-locking frizzen Lower end is located at the outside of mounting shell through triggering rod aperture；Spring fixes support installed in the inner side of mounting shell；First compression spring One end be installed on the downside that spring fixes the circular one end of support；It is circumferential on the inner headed face of spacing ring to be equably provided with two Fixture block；Spacing ring is installed on the lower end of the first compression spring；Two the first limit card blocks are circumferentially uniformly mounted to self-locking triggering On the periphery of bar and on the inside of mounting shell；Two the first limit card blocks coordinate with two fixture blocks respectively；Limited block is installed on On the periphery of self-locking frizzen；Second limit card block is installed on the inside of mounting shell on the lower face of the second installation cavity；Second limit Position fixture block coordinates with limited block；Screw thread ring set is installed on the inside of mounting shell by ring set support；Triggering ring gear passes through its periphery On external screw thread and screw thread ring set inner headed face on internal thread be fitted on the inside of mounting shell, and under the spacing ring Side；Mounting blocks are supported to be installed on the inner side of mounting shell by supporting linkage；One end of 5th shaft is installed on the one of supporting block On side；3rd gear is installed in the 5th shaft；3rd gear is by cylinder increment thereon with triggering on ring gear periphery Teeth engagement；One end of 4th shaft is installed on the another side of supporting block；Second gear is installed in the 4th shaft；The Two gears are engaged by cone increment thereon with the cone increment on the 3rd gear；First rotating shaft is installed on peace by first axle support Fill in shell；Torque limiter is installed on the periphery of the first rotating shaft other end；It is provided with the periphery of torque limiter super More clutch；First gear is fitted in first rotating shaft by pinion mounting holes and freewheel clutch；First gear is led to The cylinder increment crossed thereon is engaged with the cylinder increment in first gear；First gear is bored by back taper increment thereon and first Shape gear engages；Scroll spring installation support is installed in the inner side of mounting shell；The Inner ends of scroll spring are installed in first gear On the side of cylinder increment；Support is installed by scroll spring and is fixedly mounted in the outer end of scroll spring；Second shaft passes through second Axis support is installed in mounting shell；Second shaft is engaged by cone tooth thereon with the cone tooth in first rotating shaft；Turn to converter The inner side for a supporting block for being provided with the first installation cavity is installed on by translator support；Turn to converter and the second shaft connects Connect；3rd shaft is installed on the inner side for a supporting block for being provided with the first installation cavity by the support of the 3rd axis；3rd shaft it is another One end is connected with turning to converter；Supporting one end of shaft has cone tooth；One end that supporting shaft does not have cone tooth is installed on not It is provided with the Triaxial hole in a supporting block of the first installation cavity；The one end of support shaft with cone tooth, which passes through, is provided with the first peace The second axis hole in a supporting block behaveing affectedly is located in the first installation cavity；Support shaft passes through cone tooth thereon and the 3rd shaft On cone tooth engagement；Traveling wheel is installed in support shaft and between two supporting blocks；Sick bed is first under self-locking state Limit card block is located at the upside of spacing ring；Sick bed is between self-locking state lower position block and limit card block into 90 degree of angles；Disease Shape first compression spring under self-locking state can give one extruding force of spacing ring；Spacing ring passes through fixture block and the first limit card block Coordinate and cause self-locking frizzen and ground that there is larger frictional force to one extruding force of self-locking frizzen；Pass through self-locking frizzen Friction with ground causes sick bed to be in self-locking state；When user wants to promote sick bed, the traveling wheel on sick bed is driven to rotate； Traveling wheel, which rotates, drives support shaft to rotate；Supporting shaft to rotate drives the 3rd shaft to rotate；3rd shaft, which rotates, passes through steering Converter drives the second shaft to rotate；Second shaft, which rotates, drives first rotating shaft to rotate；First rotating shaft, which rotates, passes through overdrive clutch Device and torque limiter drive first gear to rotate；First gear rotation will compress scroll spring and cause power on scroll spring； On the one hand first gear, which rotates, at the same time can drive the first angular wheel to rotate, the first angular wheel, which rotates, can drive triggering drive rod Rotate；Due in the axle sleeve mounting groove of fixed hub installation on the rotating shaft；One end that triggering drive rod is not installed with guide block leads to Internal thread is fitted in fixed hub on the external screw thread and fixed hub inner headed face crossed on its periphery；So triggering is driven Lever can also move up while rotation；Since self-locking frizzen will not move under the action of the first compression spring at this time Dynamic and rotation；So triggering drive rod at this time and moving up driving spring will be pulled to cause driving spring that there is pulling force；At the same time Driving spring also has rotary force at this time；On the other hand first gear, which rotates, can drive second gear to rotate；Second gear rotates The 3rd gear is driven to rotate；3rd gear, which rotates, drives triggering ring gear to rotate；It is installed on since screw thread ring set is supported by ring set On the inside of mounting shell；Ring gear is triggered to install by the cooperation of the internal thread on the external screw thread on its periphery and screw thread ring set inner headed face On the inside of mounting shell, and positioned at the downside of spacing ring；So triggering ring gear can also move up while triggering ring gear rotates； Triggering ring gear moves up and spacing ring will be promoted to move up；Spacing ring, which moves up, will compress the first compression spring；Together When cause the first compression spring to lose the constraint to self-locking frizzen；But driving spring has pulling force and rotation at this time Power；So driving spring can drive self-locking frizzen to rotate when the first compression spring loses the constraint to self-locking frizzen；When When fixture block and the first limited block completely disengage, driving spring will drive self-locking frizzen to move up；So that self-locking frizzen Friction between ground disappears；I.e. sick bed can be with automatic moving；Self-locking frizzen rotation at the same time drives limit mounted thereto Position block rotation；When limited block, which is rotated to, to be contacted with the second limit card block, self-locking frizzen stops rotating；But in driving spring Under the action of may proceed to move up；When triggering drive rod is moved to the tip contact with rotation axis Upper shaft sleeve mounting groove, touch Hair drive rod stops operating；Triggering drive rod at this time can be to one resistance of rotation of the first angular wheel；First angular wheel will The resistance is delivered in first gear；Due to being provided with torque limiter on the periphery of first rotating shaft one end；Torque limiter Periphery on freewheel clutch is installed；First gear is fitted to first by pinion mounting holes and freewheel clutch In shaft；So, when first gear is subject to larger resistance, first rotating shaft would not drive under the action of torque limiter One gear have rotated；Self-locking is just needed after sick bed stops；At this time under the action of scroll spring, first gear will reversely turn It is dynamic；Due to the effect first gear of freewheel clutch rotates backward will not be so that first rotating shaft rotates；Sick bed is not interfered with It is mobile；On the one hand first gear, which rotates backward, can drive the first angular wheel to rotate, the first angular wheel, which rotates, can drive triggering Drive rod rotates；Triggering drive rod can move down while rotation；Triggering drive rod, which moves down, will pass through driving spring Self-locking frizzen is driven to move down while rotate；Another aspect first gear, which rotates, drives second gear to rotate；Second gear Rotate and drive the 3rd gear to rotate；3rd gear, which rotates, drives triggering ring gear to rotate；Triggering ring gear triggers ring gear while rotation It can move down；Triggering ring gear moves down the constraint that will be lost to spacing ring；So that spacing ring is in the first compression spring Moved down under effect；When self-locking frizzen drives the first limit card block to be moved to original position, ring gear is triggered also just Fixture block is driven to be moved to the upside of the first limited block；At this time so that self-locking frizzen and ground under the action of the first compression spring With larger frictional force；Self-locking state is in by self-locking frizzen and the friction sick bed on ground.

In the present invention by turn to converter sick bed either walk forward still backward walking can close disease The self-locking state of bed.

When the sick bed that people are designed using the present invention, symptom first compression spring under self-locking state can give spacing ring one A extruding force；Spacing ring is triggered by the cooperation of fixture block and the first limit card block to the one extruding force self-locking of self-locking frizzen Bar has larger frictional force with ground；Self-locking state is in by self-locking frizzen and the friction sick bed on ground；When making When user wants to promote sick bed, the traveling wheel on sick bed is driven to rotate；Traveling wheel, which rotates, drives support shaft to rotate；Shaft is supported to turn It is dynamic to drive the 3rd shaft to rotate；3rd shaft is rotated drives the second shaft to rotate by turning to converter；Second shaft rotates band Dynamic first rotating shaft rotates；First rotating shaft is rotated drives first gear to rotate by freewheel clutch and torque limiter；First tooth Wheel rotation will compress scroll spring and cause power on scroll spring；On the one hand first gear, which rotates, at the same time can drive the first conical tooth Wheel rotates, and the first angular wheel, which rotates, can drive triggering drive rod to rotate；Due to the axle sleeve of fixed hub installation on the rotating shaft In mounting groove；One end that triggering drive rod is not installed with guide block passes through on the external screw thread on its periphery and fixed hub inner headed face Internal thread is fitted in fixed hub；So triggering drive rod can also move up while rotation；Due at this time from Lock frizzen will not be moved and rotate under the action of the first compression spring；So triggering drive rod moves up just at this time Driving spring can be pulled to cause driving spring that there is pulling force；Driving spring also has rotary force at this time at the same time；First gear rotates On the other hand second gear can be driven to rotate；Second gear, which rotates, drives the 3rd gear to rotate；3rd gear, which rotates, drives triggering Ring gear rotates；Due to screw thread ring set by ring set support installed in mounting shell inner side；Triggering ring gear passes through outer on its periphery Screw thread is fitted on the inside of mounting shell with the internal thread on screw thread ring set inner headed face, and positioned at the downside of spacing ring；So Triggering ring gear can also move up while triggering ring gear and rotating；Triggering ring gear, which moves up, will promote spacing ring to moving up It is dynamic；Spacing ring, which moves up, will compress the first compression spring；At the same time so that the first compression spring is lost to self-locking frizzen Constraint；But driving spring has pulling force and rotary force at this time；So when the first compression spring is lost to self-locking frizzen Constraint when driving spring can drive self-locking frizzen rotate；When fixture block and the first limited block completely disengage, driving spring is just Self-locking frizzen can be driven to move up；So that the friction between self-locking frizzen and ground disappears；I.e. sick bed can be moved voluntarily It is dynamic；Self-locking frizzen rotation at the same time drives limited block rotation mounted thereto；When limited block rotates to and the second limit card block During contact, self-locking frizzen stops rotating；But it may proceed to move up under the action of driving spring；When triggering drive rod moves When moving the tip contact with rotation axis Upper shaft sleeve mounting groove, triggering drive rod stops operating；Triggering drive rod at this time can be to the One resistance of rotation of one angular wheel；The resistance is delivered in first gear by the first angular wheel；Due to first rotating shaft one Torque limiter is installed on the periphery at end；Freewheel clutch is installed on the periphery of torque limiter；First gear is led to Cross being fitted in first rotating shaft of pinion mounting holes and freewheel clutch；So when first under the action of torque limiter When gear is subject to larger resistance, first rotating shaft would not drive first gear have rotated；Self-locking is just needed after sick bed stops；This When under the action of scroll spring, first gear will rotate backward；Since the effect first gear of freewheel clutch reversely turns It is dynamic first rotating shaft to be rotated；The movement of sick bed is not interfered with；On the one hand first gear, which rotates backward, can drive first Angular wheel rotates, and the first angular wheel, which rotates, can drive triggering drive rod to rotate；Triggering can be downward while drive rod rotates It is mobile；Triggering drive rod moves down will drive self-locking frizzen to move down while rotate by driving spring；The opposing party Face first gear, which rotates, drives second gear to rotate；Second gear, which rotates, drives the 3rd gear to rotate；3rd gear, which rotates, to be driven Ring gear is triggered to rotate；Triggering ring gear can move down while triggering ring gear rotates；Triggering ring gear is moved down and will lost pair The constraint of spacing ring；So that spacing ring moves down under the action of the first compression spring；When self-locking frizzen drives the first limit When position fixture block is moved to original position, the upside that ring gear also just drives fixture block to be moved to the first limited block is triggered；Exist at this time So that self-locking frizzen has larger frictional force with ground under the action of first compression spring；Pass through self-locking frizzen and ground Friction cause sick bed to be in self-locking state.

Brief description of the drawings

Fig. 1 is global facility distribution schematic diagram.

Fig. 2 is walking mechanism appearance diagram.

Fig. 3 is walking mechanism internal structure distribution schematic diagram.

Fig. 4 is supporting bar structure schematic diagram.

Fig. 5 is traveling wheel scheme of installation.

Fig. 6 is triggering drive rod scheme of installation.

Fig. 7 is the first angular wheel scheme of installation.

Fig. 8 is scroll spring scheme of installation.

Fig. 9 is mounting shell structure diagram.

Figure 10 is supporting block scheme of installation.

Figure 11 is to turn to converter scheme of installation.

Figure 12 is the second shaft scheme of installation.

Figure 13 is the 3rd shaft scheme of installation.

Figure 14 is driving spring scheme of installation.

Figure 15 is fixed hub scheme of installation.

Figure 16 is annular guide block scheme of installation.

Figure 17 is guide block scheme of installation.

Figure 18 is the first angular wheel structure diagram.

Figure 19 is scroll spring and first gear cooperation schematic diagram.

Figure 20 is first gear structure diagram.

Figure 21 is the first compression spring scheme of installation.

Figure 22 is spacing ring scheme of installation.

Figure 23 is spring fixed support structure schematic diagram.

Figure 24 is fixture block scheme of installation.

Figure 25 is fixture block and the first limit card block cooperation schematic diagram.

Figure 26 is the first limit card block scheme of installation.

Figure 27 is limited block and the second limit card block cooperation schematic diagram.

Figure 28 is to turn to converter appearance diagram.

Figure 29 is converter shell appearance diagram.

Figure 30 is converter shell internal structure schematic diagram.

Figure 31 is guide groove distribution schematic diagram.

Figure 32 is the 4th gear scheme of installation.

Figure 33 is the 5th gear scheme of installation.

Figure 34 is the 3rd installation cavity internal structure scheme of installation.

Figure 35 is the 4th installation cavity internal structure scheme of installation.

Figure 36 is the 12nd gear scheme of installation.

Figure 37 is the 5th installation cavity internal structure scheme of installation.

Figure 38 is eighth-turn axis scheme of installation.

Figure 39 is the first guide pad scheme of installation.

Figure 40 is the tenth gear scheme of installation.

Figure 41 is the 12nd gear scheme of installation.

Figure 42 is the 12nd working gear principle schematic.

Figure 43 is the tenth working gear principle schematic.

Figure label title：1st, sick bed body；2nd, walking mechanism；3rd, traveling wheel；4th, supporting rod；5th, mounting shell；6th, it is annular Guide groove；7th, rotation slot；8th, support ring；9th, fixed hub；10th, drive rod is triggered；11st, rotation axis；12nd, the first angular wheel；13、 Driving spring；14th, the first compression spring；15th, spacing ring；16th, self-locking frizzen；17th, ring gear is triggered；18th, screw thread ring set；19、 Support shaft；20th, ring set supports；21st, supporting block；22nd, spring fixes support；23rd, first rotating shaft；24th, first gear；25th, Two gears；26th, the 3rd gear；27th, scroll spring；28th, torque limiter；29th, freewheel clutch；30th, first axle supports；31、 First axis hole；32nd, Triaxial hole；33rd, the second axis hole；34th, the first installation cavity；35th, rod aperture is triggered；36th, the second installation cavity；37、 Second axis supports；38th, converter is turned to；39th, the second shaft；40th, the 3rd shaft；41st, the 3rd axis supports；42nd, translator support； 43rd, scroll spring installation support；44th, annular guide block；45th, guide block；46th, axle sleeve mounting groove；47th, guide groove；48th, pinion mounting holes； 49th, the 4th shaft；50th, the 5th shaft；51st, supporting block；52nd, supporting linkage；53rd, fixture block；54th, the first limit card block；55th, limit Position block；56th, the second limit card block；57th, converter shell；58th, converter output shaft；59th, converter input shaft；60th, the 3rd installation Chamber；61st, first rotating shaft hole；62nd, the second shaft hole；63rd, the 4th installation cavity；65th, the 5th installation cavity；66th, the 4th shaft hole；67、 5th shaft hole；68th, guide groove；69th, the 4th gear；70th, the 5th gear；71st, the 6th gear；72nd, the 6th shaft；73rd, the 7th Gear；74th, eighth gear；75th, the 9th gear；76th, the 7th shaft；77th, eighth-turn axis；78th, the second compression spring；79th, the tenth Gear；80th, the 9th shaft；81st, the 11st gear；82nd, the 3rd compression spring；83rd, the 12nd shaft；84th, the 12nd gear； 85th, the first guide pad；86th, the second guide pad.

Embodiment

As shown in Figure 1, it includes sick bed body 1, walking mechanism 2, wherein four walking mechanisms 2 are separately mounted to sick bed sheet On four corners of 1 upper bed board downside of body.

As shown in Figure 2,3, above-mentioned walking mechanism 2 includes traveling wheel 3, supporting rod 4, mounting shell 5, annular guide channel 6, rotation slot 7th, support ring 8, fixed hub 9, triggering drive rod 10, rotation axis 11, the first angular wheel 12, driving spring 13, first compress Spring 14, spacing ring 15, self-locking frizzen 16, triggering ring gear 17, screw thread ring set 18, support shaft 19, ring set support 20, support Block 21, spring fix support 22, first rotating shaft 23, first gear 24, second gear 25, the 3rd gear 26, scroll spring 27, torsion Square limiter 28, freewheel clutch 29, first axle support the 30, first axis hole 31, Triaxial hole 32, the second axis hole 33, first peace It behave affectedly 34, triggering rod aperture 35, the second installation cavity 36, the second axis support 37, turns to converter 38, the second shaft 39, the 3rd shaft 40th, the 3rd axis support 41, translator support 42, scroll spring installation support 43, annular guide block 44, guide block 45, axle sleeve mounting groove 46th, guide groove 47, pinion mounting holes 48, the 4th shaft 49, the 5th shaft 50, support mounting blocks, supporting linkage 52, fixture block 53, Second limit card block 56, limited block 55, the first limit card block 54, wherein as shown in figure 4, one end of supporting rod 4 is provided with rotation slot 7；Annular guide channel 6 is provided with the disc of rotation slot 7；As shown in Figure 1, one end that supporting rod 4 is not provided with rotation slot 7 is installed on bed body On the downside of body upper bed board；As shown in figure 16, it is provided with axle sleeve mounting groove 46 on the end face of 11 side of rotation axis；Rotation axis 11 Periphery on annular guide block 44 is installed；As shown in figure 5, cooperation of the rotation axis 11 by annular guide block 44 and annular guide channel 6 On supporting rod 4；As shown in figure 9, mounting shell 5 is U-shape；The inner side of mounting shell 5 is provided with the second installation cavity 36；Second peace It behave affectedly on 36 upper surface and is provided with the first axis hole 31；Triggering rod aperture 35 is provided with the lower face of second installation cavity 36；Such as Figure 10 institutes Show, two supporting blocks 21 are symmetrically mounted on the end face of mounting shell 5；In two supporting blocks 21 on an opposite side end face respectively It is provided with 32 and second axis hole 33 of Triaxial hole；The inner side for being provided with a supporting block 21 of the second axis hole 33 is provided with the first installation cavity 34；First installation cavity 34 is communicated with the second installation cavity 36 and the second axis hole 33 respectively；Rotated as shown in fig. 6, mounting shell 5 is installed on The lower end of axis 11；As shown in fig. 7, there is internal thread on the inner headed face of fixed hub 9；Fixed hub 9 is installed in rotation axis 11 Axle sleeve mounting groove 46 in；The lower end of fixed hub 9 is located at the inner side of mounting shell 5 through the first axis hole 31 on mounting shell 5；Such as Shown in Figure 17, there is external screw thread on the periphery of 10 one end of triggering drive rod；Trigger periphery last week of 10 other end of drive rod To being equably provided with two guide blocks 45；As shown in figure 8, one end that triggering drive rod 10 is not installed with guide block 45 is cylindrical by its Internal thread is fitted in fixed hub 9 on 9 inner headed face of external screw thread and fixed hub on face；Pacify on triggering drive rod 10 One end equipped with guide block 45 is located in mounting shell 5；As shown in figure 18, it is circumferential on the inner headed face of the first angular wheel 12 equably to open There are two guide grooves 47；As shown in figure 15, the first angular wheel 12 is installed on the inner side of mounting shell 5, and the first taper by support ring 8 Gear 12 is by the cooperation of two guide grooves 47 and two guide blocks 45 on triggering drive rod 10；As shown in figure 14, driving spring 13 one end is installed on the lower end of triggering drive rod 10；As shown in figure 8, the other end of driving spring 13 is provided with self-locking frizzen 16；The lower end of self-locking frizzen 16 is located at the outside of mounting shell 5 through triggering rod aperture 35；As shown in figure 22, spring fixes support 22 one end is annular shape；Spring fixes the inner side that support 22 is installed on mounting shell 5；As shown in figure 21, the first compression spring 14 One end be installed on the downside that spring fixes 22 circular one end of support；First compression spring 14 is nested in self-locking frizzen 16 Upper end；As shown in figure 24, it is circumferential on the inner headed face of spacing ring 15 that two fixture blocks 53 are equably installed；As shown in figure 23, it is spacing Ring 15 is installed on the lower end of the first compression spring 14；As shown in figure 26, two the first limit card blocks 54 are circumferential is uniformly mounted to On the periphery of self-locking frizzen 16 and positioned at the inner side of mounting shell 5；As shown in figure 25, two the first limit card blocks 54 are respectively with two A fixture block 53 coordinates；As shown in figure 26, limited block 55 is installed on the periphery of self-locking frizzen 16；As shown in figure 27, second Limit card block 56 is installed on the lower face of second installation cavity 36 of the inner side of mounting shell 5；Second limit card block 56 is matched somebody with somebody with limited block 55 Close；As shown in figure 22, screw thread ring set 18 is installed on the inner side of mounting shell 5 by ring set support 20；On the inner headed face of screw thread ring set 18 With internal thread；Triggering on the periphery of ring gear 17 has external screw thread；Triggering on the periphery of ring gear 17 has teeth；Trigger tooth Ring 17 is fitted in mounting shell 5 by the internal thread on the external screw thread on its periphery and 18 inner headed face of screw thread ring set Side, and positioned at the downside of spacing ring 15；As shown in figure 22, mounting blocks are supported to be installed on mounting shell 5 by supporting linkage 52 Inner side；One end of 5th shaft 50 is installed on the one side of supporting block 21；As shown in figure 21, the 3rd gear 26 divides to bore increment With cylinder increment；3rd gear 26 is installed in the 5th shaft 50；3rd gear 26 passes through cylinder increment thereon and triggering tooth Teeth engagement on 17 periphery of ring；One end of 4th shaft 49 is installed on the another side of supporting block 21；Second gear 25 It is divided into cone increment and cylinder increment；Second gear 25 is installed in the 4th shaft 49；Second gear 25 passes through cone increment thereon Engaged with the cone increment on the 3rd gear 26；As shown in figure 13, one end of first rotating shaft 23 has cone tooth；First rotating shaft 23 passes through First axle support 30 is installed in mounting shell 5；As shown in figure 11, moment of torsion limit is installed on the periphery of 23 other end of first rotating shaft Device 28 processed；Freewheel clutch 29 is installed on the periphery of torque limiter 28；As shown in figure 12, first gear 24 is divided for cylinder Increment and back taper increment；As shown in figure 20, pinion mounting holes 48 are provided with the side of back taper increment；First gear 24 passes through gear Mounting hole 48 is fitted in first rotating shaft 23 with freewheel clutch 29；First gear 24 by cylinder increment thereon with Cylinder increment engagement in first gear 24；First gear 24 is engaged by back taper increment thereon with the first angular wheel 12； Scroll spring installation support 43 is installed on the inner side of mounting shell 5；The Inner ends of scroll spring 27 are installed on cylinder in first gear 24 On the side of increment；As shown in figure 19, the outer end of scroll spring 27 is fixedly mounted by scroll spring installation support 43；Second turn One end of axis 39 has cone tooth；Second shaft 39 is installed in mounting shell 5 by the second axis support 37；Second shaft 39 passes through it On cone tooth engaged with the cone tooth in first rotating shaft 23；As shown in figure 12, converter 38 is turned to install by translator support 42 In the inner side for a supporting block 21 for being provided with the first installation cavity 34；Converter 38 is turned to be connected with the second shaft 39；3rd shaft 40 one end has cone tooth；3rd shaft 40 is installed on a supporting block for being provided with the first installation cavity 34 by the 3rd axis support 41 21 inner side；The other end of 3rd shaft 40 is connected with turning to converter 38；Supporting one end of shaft 19 has cone tooth；Support turns The one end of axis 19 with cone tooth, which is installed on, not to be provided with the Triaxial hole 32 in a supporting block 21 of the first installation cavity 34；Such as Shown in Figure 13, one end that support shaft 19 has cone tooth passes through the second axis being provided with a supporting block 21 of the first installation cavity 34 Hole 33 is located in the first installation cavity 34；Support shaft 19 is engaged by cone tooth thereon with the cone tooth in the 3rd shaft 40；Walking Wheel 3 is installed in support shaft 19 and between two supporting blocks 21.

As shown in figure 28, above-mentioned steering variator includes converter shell 57, converter output shaft 58, converter input shaft 59th, the 3rd installation cavity 60, first rotating shaft hole 61, the second shaft hole 62, the 4th installation cavity 63, the installation of the 4th shaft hole the 66, the 5th Chamber 65, the 5th shaft hole 67, guide groove 68, the 4th gear 69, the 5th gear 70, the 6th gear 71, the 6th shaft 72, the 7th tooth Wheel 73, eighth gear 74, the 9th gear 75, the 7th shaft 76, eighth-turn axis 77, second compress spring 78, the tenth gear 79, the Nine shafts 80, the 11st gear the 81, the 3rd compression spring 82, the 12nd shaft 83, the 12nd gear 84, the first guide pad 85, Second guide pad 86, wherein as shown in figure 29, variator shell is provided with the 3rd installation cavity 60 on the inside of one end；Converter shell 57 is provided with First rotating shaft hole 61 is provided with one side end face of the 3rd installation cavity 60；First rotating shaft hole 61 is communicated with the 3rd installation cavity 60；Conversion The inner side of device shell 57 is provided with the 4th installation cavity 63；As shown in figure 30, the 4th installation cavity 63 is close to a side of the 3rd installation cavity 60 The second shaft hole 62 is provided with face；As shown in figure 31, it is provided with 63 end face away from 60 side of the 3rd installation cavity of the 4th installation cavity Two guide grooves 68；As shown in figure 30, the interior survey away from 60 one end of the 3rd installation cavity is provided with the 5th installation cavity on converter shell 57 65；5th installation cavity 65 is provided with the 4th shaft hole 66 on the end face of 63 side of the 4th installation cavity；4th shaft hole 66 and Four installation cavitys 63 communicate；The 5th shaft hole of perforation is provided with 5th installation cavity, 65 end face away from 63 side of the 4th installation cavity 67；Converter shell 57 is installed on the inner side of a supporting block 21 for being provided with the first installation cavity 34 by translator support 42；Such as Figure 32 Shown, converter input shaft 59 is installed on converter shell 57 by first rotating shaft hole 61；As shown in figure 13, converter input shaft 59 are connected with the 3rd shaft 40；5th gear 70 is installed on converter input shaft 59 and the 5th gear 70 is located at converter shell 57 On the 3rd installation cavity 60 in；As shown in figure 33, the 7th shaft 76 is installed in converter shell by the second shaft hole 62；4th Gear 69 is installed on one end of the 7th shaft 76 and the 4th gear 69 is located in the 3rd installation cavity 60 on converter shell 57；Such as figure Shown in 34, the 4th gear 69 is engaged with the 5th gear 70；9th gear 75 is installed on the other end and the 9th tooth of the 7th shaft 76 Wheel 75 is in the 4th installation cavity 63 on converter shell 57；As shown in figure 41, one end of the 12nd shaft 83 is provided with first Guide pad 85；12nd shaft 83 passes through the first guide pad 85 and one of guide groove in two guide grooves 68 in converter shell 68 are fitted in the 4th installation cavity 63；3rd compression bullet is installed between the first guide pad 85 and corresponding guide groove 68 Spring 82；As shown in figure 35, the 12nd gear 84 is installed in the 12nd shaft 83；12nd gear 84 is matched somebody with somebody with the 9th gear 75 Close；As shown in figure 40, one end of eighth-turn axis 77 is provided with the second guide pad 86；Eighth-turn axis 77 by the second guide pad 86 with Another guide groove 68 is fitted in the 4th installation cavity 63 in two guide grooves 68 in converter shell；Second guide pad 86 Second compression spring 78 is installed between corresponding guide groove 68；Tenth gear 79 is installed on eighth-turn axis 77；Such as Figure 36 Shown, the tenth gear 79 coordinates with the 9th gear 75；9th shaft 80 is installed on the end face of the 4th installation cavity 63；11st tooth Wheel 81 is installed in the 9th shaft 80；As shown in figure 38, the 11st gear 81 coordinates with the tenth gear 79；6th shaft 72 passes through 4th shaft hole 66 is installed in converter shell；Eighth gear 74 is installed on one end of the 6th shaft 72 and is located at the 4th installation cavity In 63；As shown in figure 39, eighth gear 74 coordinates with the 12nd gear 84；Eighth gear 74 is engaged with the 11st gear 81；The Seven gears 73 are installed on the other end of the 6th shaft 72 and in the 5th installation cavitys 65；Converter output shaft 58 passes through the 5th turn Axis hole 67 is installed on converter shell；6th gear 71 is installed on converter output shaft 58 and in the 5th installation cavity 65； As shown in figure 37, the 6th gear 71 is engaged with the 7th gear 73；Converter output shaft 58 is connected with the second shaft 39.

In the above-mentioned and guide direction of 79 corresponding guide groove 68 of the tenth gear and the 9th gear 75 and the tenth gear 79 Heart connection is mutually perpendicular to；With the guide direction and the 9th gear 75 and the 12nd tooth of 84 corresponding guide groove 68 of the 12nd gear The connection of 84 centers is taken turns to be mutually perpendicular to.

Above-mentioned sick bed first limit card block 54 under self-locking state is located at the upside of spacing ring 15.

Connected between above-mentioned annular guide block 44 and annular guide channel 6 by bearing fit.

Above-mentioned sick bed is between self-locking state lower position block 55 and limit card block 53 into 90 degree of angles.

Above-mentioned driving spring 13 is extension spring.

In summary：

The sick bed that the present invention designs can control the upper of sick bed traveling wheel 3 by identifying the rotary state of traveling wheel 3 on sick bed Lock status, so as to control the movement and stopping of sick bed.

Converter input shaft 59 is installed on converter shell 57 by first rotating shaft hole 61 in the present invention；Converter input shaft 59 are connected with the 3rd shaft 40；5th gear 70 is installed on converter input shaft 59；7th shaft 76 passes through the second shaft hole 62 are installed in converter shell；4th gear 69 is installed on one end of the 7th shaft 76；4th gear 69 is nibbled with the 5th gear 70 Close；9th gear 75 is installed on the other end of the 7th shaft 76；One end of 12nd shaft 83 is provided with the first guide pad 85；The 12 shafts 83 are pacified by the cooperation of the first guide pad 85 and one of guide groove 68 in two guide grooves 68 in converter shell In the 4th installation cavity 63；3rd compression spring 82 is installed between first guide pad 85 and corresponding guide groove 68；Tenth Two gears 84 are installed in the 12nd shaft 83；12nd gear 84 coordinates with the 9th gear 75；One end peace of eighth-turn axis 77 Equipped with the second guide pad 86；Eighth-turn axis 77 is led by the second guide pad 86 and another in two guide grooves 68 in converter shell To being fitted in the 4th installation cavity 63 for groove 68；Second pressure is installed between second guide pad 86 and corresponding guide groove 68 Contracting spring 78；Tenth gear 79 is installed on eighth-turn axis 77；Tenth gear 79 coordinates with the 9th gear 75；9th shaft 80 is pacified On the end face of the 4th installation cavity 63；11st gear 81 is installed in the 9th shaft 80；11st gear 81 and the tenth tooth Wheel 79 coordinates；6th shaft 72 is installed in converter shell by the 4th shaft hole 66；Eighth gear 74 is installed on the 6th shaft 72 one end；Eighth gear 74 coordinates with the 12nd gear 84；Eighth gear 74 is engaged with the 11st gear 81；7th gear 73 Installed in the other end of the 6th shaft 72；Converter output shaft 58 is installed on converter shell by the 5th shaft hole 67；6th Gear 71 is installed on converter output shaft 58；6th gear 71 is engaged with the 7th gear 73；Converter output shaft 58 and second Shaft 39 connects；When the 3rd shaft 40 rotates；3rd shaft 40, which rotates, can drive converter input shaft 59 to rotate；Converter is defeated Entering the rotation of axis 59 drives the 5th gear 70 to rotate；5th gear 70, which rotates, drives the 4th gear 69 to rotate；4th gear 69 rotates The 7th shaft 76 is driven to rotate；7th shaft 76, which rotates, drives the 9th gear 75 to rotate；The tenth is driven when the 9th gear 75 rotates When two gears 84 rotate；12nd gear 84, which rotates, can drive eighth gear 74 to rotate；Eighth gear 74, which rotates, can drive the 6th Shaft 72 rotates；6th shaft 72, which rotates, drives the 7th gear 73 to rotate；7th gear 73, which rotates, drives the 6th gear 71 to rotate； 6th gear 71, which rotates, drives converter output shaft 58 to rotate；Converter output shaft 58, which rotates, drives the second shaft 39 to rotate；When When 9th gear 75 rotates drive the tenth gear 79 rotation；Tenth gear 79, which rotates, can drive the 11st gear 81 to rotate；Tenth One gear 81, which rotates, can drive eighth gear 74 to rotate；Eighth gear 74, which rotates, drives the 6th shaft 72 to rotate；6th shaft 72 Rotate and drive the 7th gear 73 to rotate；7th gear 73, which rotates, drives the 6th gear 71 to rotate；6th gear 71, which rotates to drive, to be become Parallel operation output shaft 58 rotates；Converter output shaft 58, which rotates, drives the second shaft 39 to rotate；In the present invention with 79 phase of the tenth gear The guide direction of corresponding guide groove 68 is connected and is mutually perpendicular to the 9th gear 75 and 79 center of the tenth gear；With the 12nd gear The guide direction of 84 corresponding guide grooves 68 is connected and is mutually perpendicular to the 9th gear 75 and 84 center of the 12nd gear.Such as figure Shown in 42a, when the 9th gear 75 drives the 12nd gear 84 to rotate, the 9th gear 75 rotates can be by teeth thereon to the A thrust of ten gears 79 along corresponding 68 guide direction of guide groove；So that the tenth gear 79 drives 77 edge of eighth-turn axis Corresponding guide groove 68 to move towards the side for being provided with the second compression spring 78；As shown in fig. 42b, the tenth gear 79 moves The tenth gear 79 will be caused to be disengaged with the 9th gear 75 and the 11st gear 81；The 9th gear 75 is rotated and would not driven at this time Tenth gear 79 rotates；The rotation of the 11st gear 81 will not impact the tenth gear 79 and the 9th gear 75 at the same time； As shown in Figure 43 a, when the 9th gear 75 drives the tenth gear 79 to rotate, the 9th gear 75 is rotated and can given by teeth thereon A thrust of 12nd gear 84 along corresponding 68 guide direction of guide groove；So that the 12nd gear 84 drives the 12nd Shaft 83 is moved along corresponding guide groove 68 towards the side for being provided with the 3rd compression spring 82；As shown in fig. 43b, the ten two 84 movement of gear will cause the 12nd gear 84 to be disengaged with the 9th gear 75 and eighth gear 74；The 9th gear 75 rotates at this time The 12nd gear 84 would not be driven to rotate；The rotation of eighth gear 74 will not be to the 12nd gear 84 and the 9th gear at the same time 75 impact；I.e. no matter the 9th gear 75, which is tenth gear 79 of drive clockwise, rotates or drives the 12nd gear counterclockwise 84 rotations all can cause eighth gear 74 to rotate；And pass through the biography of the tenth gear 79, the 11st gear 81 and the 12nd gear 84 The rotation direction for passing eighth gear 74 is constant all the time；That is the rotation direction of the second shaft 39 remains constant.

Supporting rod 4 is not provided with one end of rotation slot 7 on the downside of bed body body upper bed board in the present invention；Rotate Axis 11 is fitted on supporting rod 4 by annular guide block 44 and annular guide channel 6；Mounting shell 5 is installed under rotation axis 11 End；Fixed hub 9 is installed in the axle sleeve mounting groove 46 in rotation axis 11；Triggering drive rod 10 is not installed with one end of guide block 45 It is fitted to by internal thread on 9 inner headed face of the external screw thread on its periphery and fixed hub in fixed hub 9；First cone Shape gear 12 is installed on the inner side of mounting shell 5 by support ring 8, and the first angular wheel 12 passes through two guide grooves 47 and two guide blocks 45 cooperation is on triggering drive rod 10；One end of driving spring 13 is installed on the lower end of triggering drive rod 10；Driving spring 13 other end is provided with self-locking frizzen 16；The lower end of self-locking frizzen 16 is located at the outer of mounting shell 5 through triggering rod aperture 35 Side；Spring fixes the inner side that support 22 is installed on mounting shell 5；One end of first compression spring 14 is installed on spring and fixes support 22 The downside of circular one end；It is circumferential on the inner headed face of spacing ring 15 that two fixture blocks 53 are equably installed；Spacing ring 15 is installed on The lower end of first compression spring 14；Two the first limit card blocks 54 are circumferential to be uniformly mounted on the periphery of self-locking frizzen 16 And positioned at the inner side of mounting shell 5；Two the first limit card blocks 54 coordinate with two fixture blocks 53 respectively；Limited block 55 is touched installed in self-locking On the periphery for sending out bar 16；Second limit card block 56 is installed on the lower face of second installation cavity 36 of the inner side of mounting shell 5；Second limit Position fixture block 56 coordinates with limited block 55；Screw thread ring set 18 is installed on the inner side of mounting shell 5 by ring set support 20；It is logical to trigger ring gear 17 The external screw thread crossed on its periphery is fitted to the inner side of mounting shell 5, and position with the internal thread on 18 inner headed face of screw thread ring set In the downside of spacing ring 15；Mounting blocks are supported to be installed on the inner side of mounting shell 5 by supporting linkage 52；The one of 5th shaft 50 End is on the one side of supporting block 21；3rd gear 26 is installed in the 5th shaft 50；3rd gear 26 is by thereon Cylinder increment is engaged with the teeth on triggering 17 periphery of ring gear；One end of 4th shaft 49 is installed on the opposite side of supporting block 21 On face；Second gear 25 is installed in the 4th shaft 49；Second gear 25 passes through on cone increment and the 3rd gear 26 thereon Bore increment engagement；First rotating shaft 23 is installed in mounting shell 5 by first axle support 30；The periphery of 23 other end of first rotating shaft On torque limiter 28 is installed；Freewheel clutch 29 is installed on the periphery of torque limiter 28；First gear 24 passes through Pinion mounting holes 48 are fitted in first rotating shaft 23 with freewheel clutch 29；First gear 24 passes through Cylinder Gear thereon Engaged with the cylinder increment in first gear 24 at end；First gear 24 is nibbled by back taper increment thereon and the first angular wheel 12 Close；Scroll spring installation support 43 is installed on the inner side of mounting shell 5；The Inner ends of scroll spring 27 are installed on circle in first gear 24 On the side of column increment；The outer end of scroll spring 27 is fixedly mounted by scroll spring installation support 43；Second shaft 39 passes through Second axis support 37 is installed in mounting shell 5；Second shaft 39 is engaged by cone tooth thereon with the cone tooth in first rotating shaft 23； Turn to the inner side that converter 38 is installed on a supporting block 21 for being provided with the first installation cavity 34 by translator support 42；Turn to and become Parallel operation 38 is connected with the second shaft 39；3rd shaft 40 is installed on by the 3rd axis support 41 and is provided with one of the first installation cavity 34 The inner side of supporting block 21；The other end of 3rd shaft 40 is connected with turning to converter 38；Supporting one end of shaft 19 has cone tooth； One end that support shaft 19 does not have cone tooth is installed on the Triaxial hole not being provided with a supporting block 21 of the first installation cavity 34 In 32；One end that support shaft 19 has cone tooth passes through the second axis hole 33 being provided with a supporting block 21 of the first installation cavity 34 In the first installation cavity 34；Support shaft 19 is engaged by cone tooth thereon with the cone tooth in the 3rd shaft 40；Traveling wheel 3 is pacified In support shaft 19 and between two supporting blocks 21；Sick bed first limit card block 54 under self-locking state is located at spacing The upside of ring 15；Sick bed is between self-locking state lower position block 55 and limit card block 53 into 90 degree of angles；Symptom is in self-locking shape The first compression spring 14 can give spacing ring 15 1 extruding forces under state；Spacing ring 15 passes through 53 and first limit card block 54 of fixture block Coordinate and cause self-locking frizzen 16 and ground that there is larger frictional force to 16 1 extruding forces of self-locking frizzen；Touched by self-locking Hair bar 16 and the friction on ground cause sick bed to be in self-locking state；When user wants to promote sick bed, the walking on sick bed is driven Wheel 3 rotates；Traveling wheel 3, which rotates, drives support shaft 19 to rotate；Support shaft 19, which rotates, drives the 3rd shaft 40 to rotate；3rd turn Axis 40 is rotated drives the second shaft 39 to rotate by turning to converter 38；Second shaft 39, which rotates, drives first rotating shaft 23 to rotate； First rotating shaft 23 is rotated drives first gear 24 to rotate by freewheel clutch 29 and torque limiter 28；First gear 24 rotates Scroll spring 27 will be compressed and cause power on scroll spring 27；On the one hand first gear 24, which rotates, at the same time can drive the first conical tooth Wheel 12 rotates, and the first angular wheel 12, which rotates, can drive triggering drive rod 10 to rotate；Since fixed hub 9 is installed on rotation axis 11 On axle sleeve mounting groove 46 in；Triggering drive rod 10 is not installed with one end of guide block 45 by the external screw thread on its periphery and consolidates Internal thread is fitted in fixed hub 9 on dead axle 9 inner headed faces of set；So triggering drive rod 10 also can be to while rotation Upper movement；Since self-locking frizzen 16 will not be moved and rotate under the action of the first compression spring 14 at this time；So this When triggering drive rod 10 move up will pull driving spring 13 so that driving spring 13 there is pulling force；Driving spring 13 at the same time Also there is rotary force at this time；On the other hand first gear 24, which rotates, can drive second gear 25 to rotate；Second gear 25 rotates band Dynamic 3rd gear 26 rotates；3rd gear 26, which rotates, drives triggering ring gear 17 to rotate；Since screw thread ring set 18 is supported by ring set 20 are installed on the inner side of mounting shell 5；Ring gear 17 is triggered by the external screw thread on its periphery and 18 inner headed face of screw thread ring set Screw thread is fitted to the inner side of mounting shell 5, and positioned at the downside of spacing ring 15；So touched while triggering ring gear 17 rotates Hair ring gear 17 can also move up；Triggering ring gear 17, which moves up, will promote spacing ring 15 to move up；Spacing ring 15 is upward Movement will compress the first compression spring 14；At the same time so that the first compression spring 14 loses the constraint to self-locking frizzen 16；But It is that driving spring 13 has pulling force and rotary force at this time；So when the first compression spring 14 is lost to self-locking frizzen 16 Driving spring 13 can drive self-locking frizzen 16 to rotate during constraint；When 53 and first limited block 55 of fixture block completely disengages, driving Spring 13 will drive self-locking frizzen 16 to move up；So that the friction between self-locking frizzen 16 and ground disappears；It is i.e. sick Bed can be with automatic moving；The rotation of self-locking frizzen 16 at the same time drives limited block 55 mounted thereto to rotate；When limited block 55 revolves Go to when being contacted with the second limit card block 56, self-locking frizzen 16 stops rotating；But can be after under the action of driving spring 13 It is continuous to move up；When triggering drive rod 10 is moved to the tip contact with 11 Upper shaft sleeve mounting groove 46 of rotation axis, triggering driving Bar 10 stops operating；One resistance of rotation that drive rod 10 can be to the first angular wheel 12 is triggered at this time；First angular wheel 12 The resistance is delivered in first gear 24；Due to being provided with torque limiter 28 on the periphery of 23 one end of first rotating shaft；Turn round Freewheel clutch 29 is installed on the periphery of square limiter 28；First gear 24 passes through pinion mounting holes 48 and freewheel clutch 29 are fitted in first rotating shaft 23；So when first gear 24 is subject to larger resistance under the action of torque limiter 28 When, first rotating shaft 23 would not drive first gear 24 have rotated；Self-locking is just needed after sick bed stops；At this time in scroll spring Under the action of 27, first gear 24 will rotate backward；Since the effect first gear 24 of freewheel clutch 29 rotates backward not First rotating shaft 23 can be caused to rotate；The movement of sick bed is not interfered with；On the one hand first gear 24, which rotates backward, can drive first Angular wheel 12 rotates, and the first angular wheel 12, which rotates, can drive triggering drive rod 10 to rotate；Trigger the same of the rotation of drive rod 10 When can move down；Triggering drive rod 10, which moves down, to drive self-locking frizzen 16 to move down together by driving spring 13 When rotate；Another aspect first gear 24, which rotates, drives second gear 25 to rotate；Second gear 25, which rotates, drives the 3rd gear 26 Rotate；3rd gear 26, which rotates, drives triggering ring gear 17 to rotate；Triggering ring gear 17 triggers ring gear 17 while rotation can be to moving down It is dynamic；Triggering ring gear 17 moves down the constraint that will be lost to spacing ring 15；So that spacing ring 15 is in the first compression spring 14 Moved down under effect；When self-locking frizzen 16 drives the first limit card block 54 to be moved to original position, ring gear 17 is triggered Also fixture block 53 is just driven to be moved to the upside of the first limited block 55；At this time so that self-locking under the action of the first compression spring 14 Frizzen 16 has larger frictional force with ground；Self-locking shape is in by the friction sick bed on self-locking frizzen 16 and ground State.

In the present invention by turn to 38 sick bed of converter either walk forward still backward walking can close The self-locking state of sick bed.

Embodiment：When the sick bed that people are designed using the present invention, symptom first compression bullet under self-locking state Spring 14 can give spacing ring 15 1 extruding forces；Spacing ring 15 is triggered by the cooperation of 53 and first limit card block 54 of fixture block to self-locking 16 1 extruding forces of bar cause self-locking frizzen 16 and ground to have larger frictional force；Pass through self-locking frizzen 16 and ground Friction is so that sick bed is in self-locking state；When user wants to promote sick bed, the traveling wheel 3 on sick bed is driven to rotate；Traveling wheel 3 Rotate and drive support shaft 19 to rotate；Support shaft 19, which rotates, drives the 3rd shaft 40 to rotate；3rd shaft 40 is rotated by turning The second shaft 39 is driven to rotate to converter 38；Second shaft 39, which rotates, drives first rotating shaft 23 to rotate；First rotating shaft 23 rotates First gear 24 is driven to rotate by freewheel clutch 29 and torque limiter 28；First gear 24, which rotates, will compress scrollwork bullet Spring 27 causes power on scroll spring 27；On the one hand first gear 24, which rotates, at the same time can drive the first angular wheel 12 to rotate, and first Angular wheel 12, which rotates, can drive triggering drive rod 10 to rotate；The axle sleeve installation being installed on due to fixed hub 9 in rotation axis 11 In groove 46；One end that triggering drive rod 10 is not installed with guide block 45 passes through 9 inner circle of the external screw thread on its periphery and fixed hub Internal thread is fitted in fixed hub 9 on face；So triggering drive rod 10 can also move up while rotation；Due to Self-locking frizzen 16 will not be moved and rotate under the action of the first compression spring 14 at this time；So drive rod is triggered at this time 10 move up will pull driving spring 13 so that driving spring 13 there is pulling force；Driving spring 13 also has rotation at this time at the same time Turn power；On the other hand first gear 24, which rotates, can drive second gear 25 to rotate；Second gear 25, which rotates, drives the 3rd gear 26 Rotate；3rd gear 26, which rotates, drives triggering ring gear 17 to rotate；Installed since screw thread ring set 18 is installed on by ring set support 20 The inner side of shell 5；Ring gear 17 is triggered by the cooperation of the internal thread on the external screw thread on its periphery and 18 inner headed face of screw thread ring set to pacify Mounted in the inner side of mounting shell 5, and positioned at the downside of spacing ring 15；So triggering ring gear 17 can also while triggering ring gear 17 rotates Move up；Triggering ring gear 17, which moves up, will promote spacing ring 15 to move up；Spacing ring 15, which moves up, to be compressed First compression spring 14；At the same time so that the first compression spring 14 loses the constraint to self-locking frizzen 16；But bullet is driven at this time Spring 13 has pulling force and rotary force；So drive bullet when the first compression spring 14 loses the constraint to self-locking frizzen 16 Spring 13 can drive self-locking frizzen 16 to rotate；When 53 and first limited block 55 of fixture block completely disengages, driving spring 13 will band Dynamic self-locking frizzen 16 moves up；So that the friction between self-locking frizzen 16 and ground disappears；I.e. sick bed can be moved voluntarily It is dynamic；The rotation of self-locking frizzen 16 at the same time drives limited block 55 mounted thereto to rotate；When limited block 55 rotates to and the second limit When position fixture block 56 contacts, self-locking frizzen 16 stops rotating；But it may proceed to move up under the action of driving spring 13；When When triggering drive rod 10 is moved to the tip contact with 11 Upper shaft sleeve mounting groove 46 of rotation axis, triggering drive rod 10 stops operating； One resistance of rotation that drive rod 10 can be to the first angular wheel 12 is triggered at this time；The resistance is delivered to by the first angular wheel 12 In first gear 24；Due to being provided with torque limiter 28 on the periphery of 23 one end of first rotating shaft；Outside torque limiter 28 Freewheel clutch 29 is installed on disc；First gear 24 is fitted to by pinion mounting holes 48 and freewheel clutch 29 In first rotating shaft 23；So under the action of torque limiter 28 when first gear 24 is subject to larger resistance, first rotating shaft 23 First gear 24 would not be driven to have rotated；Self-locking is just needed after sick bed stops；At this time under the action of scroll spring 27, the One gear 24 will rotate backward；It will not cause first rotating shaft since the effect first gear 24 of freewheel clutch 29 rotates backward 23 rotate；The movement of sick bed is not interfered with；On the one hand first gear 24, which rotates backward, can drive the first angular wheel 12 to rotate, First angular wheel 12, which rotates, can drive triggering drive rod 10 to rotate；Triggering drive rod 10 can move down while rotation；Touch Hair drive rod 10 moves down will drive self-locking frizzen 16 to move down while rotate by driving spring 13；On the other hand First gear 24, which rotates, drives second gear 25 to rotate；Second gear 25, which rotates, drives the 3rd gear 26 to rotate；3rd gear 26 Rotate and drive triggering ring gear 17 to rotate；Triggering ring gear 17 can move down while triggering ring gear 17 rotates；Trigger ring gear 17 to Lower movement will lose the constraint to spacing ring 15；So that spacing ring 15 moves down under the action of the first compression spring 14； When self-locking frizzen 16 drives the first limit card block 54 to be moved to original position, triggering ring gear 17 also just drives fixture block 53 It is moved to the upside of the first limited block 55；At this time so that self-locking frizzen 16 and ground mask under the action of the first compression spring 14 There is larger frictional force；Self-locking state is in by the friction sick bed on self-locking frizzen 16 and ground.

Claims (5)

1. A kind of 1. self-locking sick bed that hospital uses, it is characterised in that：It includes sick bed body, walking mechanism, wherein four walkings Mechanism is separately mounted on four corners of sick bed body upper bed board downside；

   Above-mentioned walking mechanism includes traveling wheel, supporting rod, mounting shell, annular guide channel, rotation slot, support ring, fixed hub, triggering Drive rod, rotation axis, the first angular wheel, driving spring, first compression spring, spacing ring, self-locking frizzen, triggering ring gear, Screw thread ring set, support shaft, ring set support, supporting block, spring fixation support, first rotating shaft, first gear, second gear, the Three gears, scroll spring, torque limiter, freewheel clutch, first axle support, the first axis hole, Triaxial hole, the second axis hole, First installation cavity, triggering rod aperture, the second installation cavity, the support of the second axis, steering converter, the second shaft, the 3rd shaft, the 3rd axis Support, translator support, scroll spring installation support, annular guide block, guide block, axle sleeve mounting groove, guide groove, pinion mounting holes, the Four shafts, the 5th shaft, support mounting blocks, supporting linkage, fixture block, the second limit card block, limited block, the first limit card block, One end of wherein supporting rod is provided with rotation slot；Annular guide channel is provided with the disc of rotation slot；Supporting rod is not provided with the one of rotation slot End is on the downside of bed body body upper bed board；Axle sleeve mounting groove is provided with the end face of rotation axis side；Outside rotation axis Annular guide block is installed on disc；Rotation axis is fitted on supporting rod by annular guide block and annular guide channel；Mounting shell For U-shape；The second installation cavity is provided with the inside of mounting shell；The first axis hole is provided with the upper surface of second installation cavity；Second installation Triggering rod aperture is provided with the lower face of chamber；Two supporting blocks are symmetrically mounted on the end face of mounting shell；Phase in two supporting blocks To a side end face on have Triaxial hole and the second axis hole；It is provided with the inside of a supporting block of the second axis hole and is provided with One installation cavity；First installation cavity is communicated with the second installation cavity and the second axis hole respectively；Mounting shell is installed on the lower end of rotation axis；Gu There is internal thread on the inner headed face of dead axle set；In the axle sleeve mounting groove of fixed hub installation on the rotating shaft；Under fixed hub End is located at the inner side of mounting shell through the first axis hole on mounting shell；There is external screw thread on the periphery of triggering drive rod one end； Trigger and two guide blocks are equably circumferentially installed on the periphery of the drive rod other end；Triggering drive rod is not installed with the one of guide block End is fitted in fixed hub by internal thread on the external screw thread and fixed hub inner headed face on its periphery；Triggering is driven One end that guide block is provided with lever is located in mounting shell；Circumferentially two are equably provided with the inner headed face of first angular wheel to lead Groove；First angular wheel is installed on the inside of mounting shell by support ring, and the first angular wheel is led by two guide grooves with two The cooperation of block is on triggering drive rod；One end of driving spring is installed on the lower end of triggering drive rod；Driving spring it is another End is provided with self-locking frizzen；The lower end of self-locking frizzen is located at the outside of mounting shell through triggering rod aperture；Spring fixes support One end for annular shape；Spring fixes support installed in the inner side of mounting shell；One end of first compression spring is consolidated installed in spring The downside of fixed circular one end of support；First compression spring is nested in the upper end of self-locking frizzen；Inner headed face last week of spacing ring To being equably provided with two fixture blocks；Spacing ring is installed on the lower end of the first compression spring；Two the first limit card blocks are circumferentially equal Evenly on the periphery of self-locking frizzen and on the inside of mounting shell；Two the first limit card blocks respectively with two fixture blocks Coordinate；Limited block is installed on the periphery of self-locking frizzen；Second limit card block is installed on the second installation cavity on the inside of mounting shell Lower face on；Second limit card block coordinates with limited block；Screw thread ring set is installed on the inside of mounting shell by ring set support；Screw thread There is internal thread on the inner headed face of ring set；Triggering on the periphery of ring gear has external screw thread；Trigger has on the periphery of ring gear Teeth；Triggering ring gear is fitted to installation by the internal thread on the external screw thread on its periphery and screw thread ring set inner headed face On the inside of shell, and positioned at the downside of spacing ring；Mounting blocks are supported to be installed on the inner side of mounting shell by supporting linkage；5th shaft One end be installed on supporting block one side on；3rd gear is divided into cone increment and cylinder increment；3rd gear is installed on the 5th In shaft；3rd gear is engaged by cylinder increment thereon with the teeth on triggering ring gear periphery；One end of 4th shaft On the another side of supporting block；Second gear is divided into cone increment and cylinder increment；Second gear is installed on the 4th shaft On；Second gear is engaged by cone increment thereon with the cone increment on the 3rd gear；One end of first rotating shaft has cone tooth；The One shaft is installed in mounting shell by first axle support；Torque limiter is installed on the periphery of the first rotating shaft other end； Freewheel clutch is installed on the periphery of torque limiter；First gear is divided into cylinder increment and back taper increment；Back taper increment Side on be provided with pinion mounting holes；First gear is fitted to first rotating shaft by pinion mounting holes and freewheel clutch On；First gear is engaged by cylinder increment thereon with the cylinder increment in first gear；First gear by thereon fall Cone increment is engaged with the first angular wheel；Scroll spring installation support is installed in the inner side of mounting shell；The Inner ends peace of scroll spring Mounted in first gear on the side of cylinder increment；Support is installed by scroll spring and is fixedly mounted in the outer end of scroll spring；The One end of two shafts has cone tooth；Second shaft is installed in mounting shell by the support of the second axis；Second shaft is by thereon Cone tooth is engaged with the cone tooth in first rotating shaft；Turn to converter and be installed on by translator support and be provided with one of the first installation cavity The inner side of supporting block；Converter is turned to be connected with the second shaft；One end of 3rd shaft has cone tooth；3rd shaft passes through the 3rd Axis support is installed on the inner side for a supporting block for being provided with the first installation cavity；The other end of 3rd shaft connects with turning to converter Connect；Supporting one end of shaft has cone tooth；The one end of support shaft with cone tooth, which is installed on, is not provided with the one of the first installation cavity In Triaxial hole in a supporting block；The one end of support shaft with cone tooth, which passes through, to be provided with a supporting block of the first installation cavity The second axis hole be located in the first installation cavity；Support shaft is engaged by cone tooth thereon with the cone tooth in the 3rd shaft；Walking Wheel is installed in support shaft and between two supporting blocks；

   Above-mentioned steering variator includes converter shell, converter output shaft, converter input shaft, the 3rd installation cavity, first rotating shaft Hole, the second shaft hole, the 4th installation cavity, the 4th shaft hole, the 5th installation cavity, the 5th shaft hole, guide groove, the 4th gear, Five gears, the 6th gear, the 6th shaft, the 7th gear, eighth gear, the 9th gear, the 7th shaft, eighth-turn axis, the second pressure Contracting spring, the tenth gear, the 9th shaft, the 11st gear, the 3rd compression spring, the 12nd shaft, the 12nd gear, first are led To block, the second guide pad, the 3rd installation cavity is wherein provided with the inside of variator shell one end；Converter shell is provided with the 3rd installation cavity First rotating shaft hole is provided with one side end face；First rotating shaft hole is communicated with the 3rd installation cavity；The 4th peace is provided with the inside of converter shell It behave affectedly；4th installation cavity is provided with the second shaft hole on a side end face of the 3rd installation cavity；4th installation cavity is away from the 3rd peace It behave affectedly on the end face of side and is provided with two guide grooves；The interior survey away from the 3rd installation cavity one end is provided with the 5th installation on converter shell Chamber；5th installation cavity is provided with the 4th shaft hole on the end face of the 4th installation cavity side；4th shaft hole and the 4th installation cavity Communicate；The 5th shaft hole of perforation is provided with 5th end face of the installation cavity away from the 4th installation cavity side；Converter shell passes through change Parallel operation support, which is installed on, to be provided with the inside of a supporting block of the first installation cavity；Converter input shaft is installed on by first rotating shaft hole On converter shell；Converter input shaft is connected with the 3rd shaft；5th gear is installed on converter input shaft and the 5th gear In the 3rd installation cavity on converter shell；7th shaft is installed in converter shell by the second shaft hole；4th gear It is located at installed in one end of the 7th shaft and the 4th gear in the 3rd installation cavity on converter shell；4th gear and the 5th gear Engagement；9th gear is installed on the other end of the 7th shaft and the 9th gear is located in the 4th installation cavity on converter shell；The One end of 12 shafts is provided with the first guide pad；12nd shaft passes through two guide grooves in the first guide pad and converter shell In one of guide groove be fitted in the 4th installation cavity；Is provided between first guide pad and corresponding guide groove Three compression springs；12nd gear is installed in the 12nd shaft；12nd gear and the 9th gear coordinate；The one of eighth-turn axis End is provided with the second guide pad；Eighth-turn axis passes through another guide groove in two guide grooves in the second guide pad and converter shell Be fitted in the 4th installation cavity；Second compression spring is installed between the second guide pad and corresponding guide groove；Tenth Gear is installed on eighth-turn axis；Tenth gear and the 9th gear coordinate；9th shaft is installed on the end face of the 4th installation cavity； 11st gear is installed in the 9th shaft；11st gear and the tenth gear coordinate；6th shaft is pacified by the 4th shaft hole In converter shell；Eighth gear is installed on one end of the 6th shaft and in the 4th installation cavity；Eighth gear and the tenth Two gears coordinate；Eighth gear is engaged with the 11st gear；7th gear is installed on the other end of the 6th shaft and positioned at the 5 In installation cavity；Converter output shaft is installed on converter shell by the 5th shaft hole；6th gear is exported installed in converter On axis and in the 5th installation cavity；6th gear is engaged with the 7th gear；Converter output shaft is connected with the second shaft；

   Above-mentioned be connected with the guide direction of the tenth corresponding guide groove of gear with the 9th gear and the tenth gear centre is mutually hung down Directly；It is connected with the guide direction of the 12nd corresponding guide groove of gear with the 9th gear and the 12nd gear centre and mutually hangs down Directly.
2. 2. the self-locking sick bed that a kind of hospital according to claim 1 uses, it is characterised in that：Above-mentioned sick bed is in self-locking state Lower first limit card block is located at the upside of spacing ring.
3. 3. the self-locking sick bed that a kind of hospital according to claim 1 uses, it is characterised in that：Above-mentioned annular guide block and annular Connected between guide groove by bearing fit.
4. 4. the self-locking sick bed that a kind of hospital according to claim 1 uses, it is characterised in that：Above-mentioned sick bed is in self-locking state Into 90 degree of angles between lower position block and limit card block.
5. 5. the self-locking sick bed that a kind of hospital according to claim 1 uses, it is characterised in that：Above-mentioned driving spring is stretching Spring.