CN105217407B - Subtract the unidirectional automatic anti-running car speed limiting system of stroke - Google Patents
Subtract the unidirectional automatic anti-running car speed limiting system of stroke Download PDFInfo
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Abstract
The invention discloses one kind to subtract the unidirectional automatic anti-running car speed limiting system of stroke, encoder is installed on the main shaft of its limiter of speed, rope sheave is assemblied on main shaft, ratchet is rotatably equipped with the side of the wheel face of rope sheave, the ratchet torsion spring for matching somebody with somebody the neck card of ratchet turning ratchet wheel and ratchet is provided between ratchet and rope sheave, ratchet location structure is also rotatably equipped with the wheel face of rope sheave, ratchet is coaxially fixedly installed disc on the wheel face away from gravity drop hammer, the outer rim position of disc is laid with self-resetting switch, each self-resetting switch is on the circumference of a concentric circles of disc, the lever of each self-resetting switch stretches to inner side, the free end of each lever is on the circumference of one group of concentric circles of disc respectively, gravity drop hammer touches each self-resetting switch successively in opening process.The present invention, which can realize, makes corresponding building be not required to the headroom and bottom space of extra increase elevator, while in the case of buffer cost need not be increased, just can be using the purpose of more speed elevator.
Description
Technical field
The present invention relates to a kind of speed limiting system for being used to limit elevator speed, more particularly to one kind to subtract stroke unidirectionally certainly
Move anti-slip speed limiting system.
Background technology
With the development of social economy and the lifting of people's levels of substance, skyscraper is more and more, the specified speed of elevator
Also more and more higher is spent, because buffer stroke and speed are proportional, this means that elevator speed is higher, required
Buffer stroke is bigger, and the headroom and bottom space of elevator are higher, not only increases the cost of buffer, can also increase greatly
Add building difficulty, waste construction area.
For elevator typically in 2.5m/s with descending stair speed, buffer of elevator is selected according to rated speed of lift at present.
Buffer is to provide a kind of last elevator car safety of safeguard protection.It is arranged in the well pit of elevator,
Positioned at the underface of car and counterweight.When elevator is in being moved upwardly or downwardly, due to wire cable rupture, traction frictional force, embrace
Lock brake force deficiency or control system failure and when surmounting terminal stop bottom or top layer, will by buffer cushioning effect,
To avoid lift car or counterweight from directly hitting bottom or rush to summit, the safety of passenger and equipment is protected.
If a kind of technical scheme can be provided, the headroom and bottom space of extra increase elevator are being not required to, while not
Need in the case of increasing buffer cost, with regard to building can be made to use the elevator of more speed, will can abolish current this and be stranded
Border.This requires lift car that speed lowers when running to above buffer, and limiter of speed can is by the speed of elevator
Degree reduces.
Of the prior art have a kind of such limiter of speed, including a base, and rope sheave is equipped with by main axis on base
And ratchet, the both ends of main shaft are arranged on base by bearing, rope sheave rotation stop is assemblied on main shaft, and one end of main shaft is provided with volume
Code device, is arranged with steel wire rope on rope sheave.The diameter of ratchet is less than the diameter of rope sheave, and spine is rotatably equipped with the wheel face of rope sheave
Pawl, torsion spring is provided between ratchet and rope sheave, torsion spring is to Pawl Torsion so that pawl rotation has the neck card with ratchet all the time
The trend matched somebody with somebody, when ratchet is in free state, ratchet can be in the state of clamping with ratchet, also rotate and set on rope sheave
Ratchet location structure is equipped with, ratchet location structure has a top pressure end, and the top pressure end top pressure is on ratchet so that ratchet is in
The normal condition of ratchet is decontroled, there is torsion spring, torsion spring provides compression for ratchet location structure between ratchet location structure and rope sheave
The power of ratchet, ratchet is overcome torsion spring power thereon, keep the state separated with ratchet, two weights are also rotatably equipped with rope sheave
Power hammer, ratchet and ratchet location structure are in the side of rope sheave, and two gravity drop hammers are in the other side of rope sheave.Two gravity drop hammers
Set-up mode on rope sheave is centrosymmetric mode, and the run-on point of gravity drop hammer is not located at both ends, one end quality of gravity drop hammer
It is tup end, it is hammer handle end that other end quality is smaller, and stage clip dress is provided between the hammer handle end of gravity drop hammer and rope sheave
Put, compression-spring device causes the tup end of gravity drop hammer to be in the centre of rope sheave, heavy in tup portion and another of the gravity drop hammer
Connecting rod is connected between the hammer handle portion of power hammer, the both ends of connecting rod are hinged with two gravity drop hammers respectively, in rope sheave normal rotation,
In the presence of compression-spring device, the tup portion of two gravity drop hammers is at the centre of rope sheave.In rope sheave overspeed operation, from
In the presence of mental and physical efforts, two gravity drop hammers can overcome the spring force of compression-spring device to open, and two tups can all turn to the edge of rope sheave
Place, two hammer handles are turned at the center of rope sheave.There is the trigger unit through rope sheave on ratchet location structure, in the tup of gravity drop hammer
When turning to the outer rim of rope sheave, top of the gravity drop hammer to projection in top pressure trigger unit so that ratchet location structure overcomes its torsion spring
Power rotates, and ratchet location structure compresses ratchet so that ratchet continues to rotate to the direction away from ratchet, with the increasing of rotation distance
Add, ratchet location structure can decontrol ratchet, and ratchet is stuck in the presence of its torsion spring with ratchet, when ratchet location structure is put
After opening ratchet, ratchet will cross ratchet location structure and keep off ratchet location structure in turn so that ratchet location structure can not
Reset, at this moment, ratchet location structure top pressure ratchet in the presence of torsion spring power so that ratchet is reliably in and ratchet buckle
State, in this state, it is set to rotate lasting rotation to the direction away from ratchet if moving ratchet, ratchet will be with ratchet
Location structure separates, and at this moment ratchet location structure return in the presence of its torsion spring decontrols ratchet, ratchet location structure will be with spine
Pawl positions.When ratchet is reliably in the state with ratchet buckle, rope sheave drives pawl wheel by ratchet.On base in
The side of rope sheave is rotatably equipped with keep plate, and connecting rod, one end of connecting rod and braking are provided between the side of keep plate and wheel face
Plate is hinged at, and the other end of connecting rod and the wheel face of ratchet are hinged, and after ratchet and ratchet are fastened togather, ratchet follows rope
Wheel rotates, and ratchet drives keep plate to press to rope sheave when rotating by connecting rod, realizes the braking of rope sheave.It is additionally provided with base
Electromagnet, the meeting top pressure gravity drop hammer when electromagnet is powered so that gravity drop hammer opens, and allows ratchet and pawl to be fastened togather, and realizes
The forced brake of rope sheave.
The content of the invention
It is an object of the invention to provide one kind to subtract the unidirectional automatic anti-running car speed limiting system of stroke, to allow limiter of speed to lead to
The mode for crossing braking rope sheave is car speed limit, so that corresponding building is not required to the extra headroom for increasing elevator and bottom is empty
Between, while in the case of buffer cost need not be increased, just can be using the elevator of more speed.
In order to realize the above object the present invention adopts the following technical scheme that：One kind subtracts the unidirectional automatic anti-running car speed limit of stroke
System, including subtract journey controller, limiter of speed, car top set position detection unit, car bottom set position detection unit, the limit
Fast device includes base, is equipped with rope sheave and ratchet by main axis on base, the both ends of main shaft are arranged on base by bearing
On, rope sheave rotation stop is assemblied on main shaft, and encoder is provided with main shaft, and the side of rope sheave, which is provided with keep plate, on base fills
Put, ratchet is rotatably equipped with the side of the wheel face of rope sheave, being provided between ratchet and rope sheave makes ratchet turning ratchet wheel and ratchet
The ratchet torsion spring matched somebody with somebody of neck card, ratchet location structure, ratchet location structure and rope are also rotatably equipped with the wheel face of rope sheave
Positioning torsion spring is provided between wheel, top pressure end and the pawl spring top pressure of ratchet location structure coordinate, the opposite side of rope sheave wheel face
Two gravity drop hammers are also rotatably equipped with, the electromagnetism that top pressure gravity drop hammer after powered up causes gravity drop hammer to open is additionally provided with base
Iron, be convexly equipped with the trigger unit of ratchet location structure when the tup of gravity drop hammer turns to the outer rim of rope sheave with gravity drop hammer press-fit
Top, be convexly equipped with ratchet when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and the hammer handle top pressure of gravity drop hammer causes ratchet
Separated with ratchet and cause ratchet location structure and the lifting release link of ratchet pawl reset, wheel face of the described ratchet away from gravity drop hammer
On be coaxially fixedly installed disc, the outer rim position of disc is laid with self-resetting switch, and each self-resetting switch is in disc
On the circumference of one concentric circles, the lever of each self-resetting switch stretches to inner side, and the free end of each lever is in the one of disc respectively
On the circumference of group concentric circles, gravity drop hammer touches each self-resetting switch successively in opening process, and the encoder is used for and electricity
Terraced master control system transmission is connected, and elevator master control system is connected with magnet control；Car top set position detection unit is installed
The rate controlling opening position at the top of elevator hoistways, car bottom set position detection unit are installed in elevator hoistways bottom rate controlling opening position；Sedan-chair
The signal output part connection of railway carriage or compartment top set position detection unit subtracts the car top set signal input part of journey controller, car bottom set position
The signal output part connection for putting detection unit subtracts the car bottom set signal input part of journey controller, and the signal of self-resetting switch is defeated
Go out the car Control for Speed Limitation signal input part that end connection subtracts journey controller, the brake signal output end for subtracting journey controller is used for
Connect the brake signal input of elevator master control system.
Described disc is sheet ring body, and fixed calvus is radially laid with the inner hole wall of disc, and fixed calvus passes through spiral shell
Nail is fixed on disc.
Described self-resetting switch is fixed on disc by connection sheet, each connection sheet radially extend and with disc one
Set.
Described Self-resetting speed-limiting switch is connected to the car Control for Speed Limitation signal input part for subtracting journey controller.
Described car top set position detection unit uses the first travel switch, and car bottom set position detection unit is using the
Two travel switches, the first travel switch are arranged on the well enclosure of top, and lift car outer wall relevant position/be equiped with is for the
One stroke switch coordinates what is bumped against to hit bow；Second travel switch is arranged on the well enclosure of bottom, lift car outer wall relevant position
It is equiped with for coordinating what is bumped against to hit bow with the second travel switch.
The journey controller that subtracts uses microcontroller, and the brake signal output end of microcontroller is used to connect elevator master control
Brake signal input in system processed.
The present invention monitors the speed of car by car Control for Speed Limitation unit in real time, when car top set position detection unit or
When car bottom set position detection unit detects that car reaches the position, output signal to and subtract journey controller, subtract Stroke Control
After device receives the signal, judge whether current limiter of speed acts, if now limiter of speed acts, subtract journey controller and export at once
Signal gives elevator master control system, controls elevator brake, makes elevator out of service before buffer is reached, make phase so as to realize
The headroom and bottom space for being not required to extra increase elevator should be built, while in the case of buffer cost need not be increased,
Purpose with regard to more speed elevator can be used.Disc is provided with the ratchet of the present invention, the outer rim position of disc is laid with runback
Bit switch, each self-resetting switch are on the circumference of a concentric circles of disc, and the lever of each self-resetting switch stretches to inner side,
The free end of each lever is on the circumference of one group of concentric circles of disc respectively, and gravity drop hammer touches each successively in opening process
Self-resetting switch, after self-resetting switch is touched, self-resetting switch, which will output signal to, subtracts journey controller, subtracts stroke control
After device processed receives the signal, judge whether current car Control for Speed Limitation unit acts, if now car Control for Speed Limitation unit moves
Make, subtract journey controller and output signal to elevator master control system at once, control elevator brake, make elevator reach buffer it
It is preceding out of service, so as to realize corresponding building is not required to extra increase elevator headroom and bottom space, simultaneously need not
In the case of increasing buffer cost, the purpose of more speed elevator can be just used.
Brief description of the drawings
Fig. 1 is the structured flowchart of the embodiment of the present invention；
Fig. 2 is the circuit theory diagrams of the embodiment of the present invention；
Fig. 3 is corresponding assembling schematic diagram of the car with first, second travel switch shown in Fig. 2；
Fig. 4 is the overall structure diagram of the limiter of speed of the embodiment of the present invention；
Fig. 5 is the assembling schematic diagram of rope sheave in Fig. 4, ratchet and disc；
Fig. 6 is Fig. 5 left view；
Fig. 7 is Fig. 5 right view；
Fig. 8 is the explosive view of the rope sheave and ratchet in Fig. 4；
Fig. 9 is the automatic anti-running car control figure for the elevator device that embodiments of the invention are applied.
Embodiment
A kind of embodiment for subtracting the unidirectional automatic anti-running car speed limiting system of stroke, in Fig. 1 ~ 9, on the base 1 of its limiter of speed
Rope sheave 2 and ratchet 3 are equipped with by main axis, the both ends of main shaft are arranged on base 1 by bearing, the assembling of the rotation stop of rope sheave 2
On main shaft, one end of main shaft is provided with encoder, and the side of rope sheave 2 is provided with brake plate device on base 1, on rope sheave 2
It is arranged with steel wire rope.The diameter of ratchet 3 is less than the diameter of rope sheave 2, and ratchet 4, ratchet 4 are rotatably equipped with the wheel face of rope sheave 2
Torsion spring is provided between rope sheave 2, torsion spring gives the torsion of ratchet 4 so that ratchet 4 rotates all the time, and there is the neck card with ratchet 3 to match somebody with somebody
Trend, when ratchet 4 is in free state, ratchet 4 and ratchet 3 can be in the state of clamping, also be rotated on rope sheave 2
Ratchet location structure 6 is provided with, ratchet location structure 6 has a top pressure end, and the top pressure end top pressure is on ratchet 4 so that spine
Pawl 4 is in the normal condition for decontroling ratchet 3, has torsion spring between ratchet location structure 6 and rope sheave 2, and torsion spring is ratchet positioning knot
Structure 6 provides the power for compressing ratchet 4, ratchet 4 is overcome torsion spring power thereon, keeps the state separated with ratchet 3, on rope sheave 2 and also
Two gravity drop hammers 5 are rotatably equipped with, ratchet 4 and ratchet location structure 6 are in the side of rope sheave 2, and two gravity drop hammers 5 are in rope sheave
2 other side.Set-up mode of two gravity drop hammers 5 on rope sheave 2 is centrosymmetric mode, and the run-on point of gravity drop hammer 5 is not
It is in both ends, one end quality of gravity drop hammer 5 is tup end, and it is hammer handle end that other end quality is smaller, the hammer of a gravity drop hammer 5
Compression-spring device 11 is provided between pommel and rope sheave 2, compression-spring device 11 causes the tup end of gravity drop hammer 5 to be in the center of rope sheave 2
Position, connecting rod 10, the both ends of connecting rod 10 are connected between the tup portion of the gravity drop hammer 5 and the hammer handle portion of another gravity drop hammer 5
It is be hinged with two gravity drop hammers 5 respectively, in 2 normal rotation of rope sheave, in the presence of compression-spring device 11, the hammer of two gravity drop hammers 5
Head is at the centre of rope sheave 2.In 2 overspeed operation of rope sheave, under the influence of centrifugal force, two meetings gram of gravity drop hammer 5
The spring force for taking compression-spring device 11 opens, and two tups can all turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave 2
Place.There is the trigger unit through rope sheave 2 on ratchet location structure 6, when the tup of gravity drop hammer 5 turns to the outer rim of rope sheave 2, weight
Power hammers the top of projection in 5 pairs of top pressure trigger units into shape so that ratchet location structure 6 overcomes the power of its torsion spring to rotate, ratchet positioning knot
Structure 6 compresses ratchet 4 so that ratchet 4 continues to rotate to the direction away from ratchet 3, with the increase of rotation distance, ratchet positioning knot
Structure 6 can decontrol ratchet 4, and ratchet 4 is stuck in the presence of its torsion spring with ratchet 3, when ratchet location structure 6 decontrols ratchet 4
Afterwards, ratchet 4 will cross ratchet location structure 6 and keep off ratchet location structure 6 in turn so that ratchet location structure 6 can not answer
Position, at this moment, the top pressure ratchet 4 in the presence of torsion spring power of ratchet location structure 6 so that ratchet 4 is reliably in and the buckle of ratchet 3
State.In this state, if to contact the buckle between ratchet 4 and ratchet 3.So that ratchet 4 and ratchet location structure 6
Reply mutual top pressure so that when ratchet 4 is maintained at the state separated with ratchet 3, it is possible to which moving ratchet 4 makes it to away from ratchet
3 direction rotates lasting rotation, and ratchet 4 will separate with ratchet location structure 6, effect of the ratchet location structure 6 in its torsion spring
Lower return, ratchet 4 is at this moment decontroled, ratchet location structure 6 will position with ratchet, and both are returned to original state.
It is convexly equipped with lifting release link 7 on ratchet 4, perpendicular to the wheel face of rope sheave 2, rope sheave 2 here is lifting release link 7
Wheel hub fills, and is just having wheel rim, is there is core wheel, is being linked to be an entirety by spoke between core wheel and wheel rim, lifting release link 7 is by two
Passed through between spoke, offer functional hole 9 on the hammer handle of gravity drop hammer 5, lifting release link 7 by after being passed through between two spokes again
By being passed through in functional hole 9.Top pressure wheel 8 is fixed with by being located in helicitic texture in functional hole 9 on the hammer handle of gravity drop hammer 5, when
When gravity drop hammer 5 resets, that is, when the hammer handle of gravity drop hammer 5 turns to the wheel rim of rope sheave 2, top pressure wheel 8 can top pressure lifting release link
7, that is, drive ratchet 4 its is rotated lasting rotation to the direction away from ratchet 3, ratchet 4 will divide with ratchet location structure 6
From at this moment the return in the presence of its torsion spring of ratchet location structure 6 decontrols ratchet 4, ratchet location structure 6 will be determined with ratchet 4
Position, both are returned to original state, realize automatically reseting for ratchet 4.
Because lifting release link 7 is through functional hole 9 on the hammer handle of gravity drop hammer 5, in motion process, lifting release link
7 can move relative to the hammer handle of gravity drop hammer 5, so functional hole 9 needs, with the avoidance part for avoiding lifting release link 7, to avoid
Part can cause lifting release link 7 to be moved freely relative to gravity drop hammer 5.
Coaxially it is fixedly installed disc 12 on wheel face of the ratchet 3 away from gravity drop hammer 5, disc 12 is sheet ring body, disc
Fixed calvus 16 is radially laid with 12 inner hole wall, fixed calvus 16 is fixed by screws on disc.The outer rim cloth of disc 7
Provided with connection sheet 13, connection sheet 13 is wholely set with disc 12, and connection sheet 13 and disc 12 are coplanar, in each connection sheet 13
Self-resetting switch 14 is fixed with, each self-resetting switch 14 is on a circumference, and this circumference is one of disc 12 concentric
Circle, the lever 15 of each self-resetting switch 14 stretch to inner side, and the free end of each lever 15 is on the circumference of one group of concentric circles respectively,
This group of concentric circles is the concentric circles of disc, and gravity drop hammer touches each self-resetting switch 14, lever successively in opening process
Long first touches, and is touched after lever is short.
Electromagnet is additionally provided with base 1, after powered up, electromagnet meeting top pressure gravity drop hammer so that two gravity drop hammers open,
Namely so that the heavier tup of gravity drop hammer turns to the outer rim of rope sheave, the forced brake of rope sheave is realized.Fig. 9 is the present embodiment institute
The automatic anti-running car control figure of the elevator device of application, when elevator is stopped, the traction deficiency caused by overload；Overload
Caused brake force deficiency；Elevator maintenance not in time caused by steel rope abrasion or greasy dirt, cause traction machine insufficient；Or elevator dimension
The pad wear that braked caused by protecting not in time is excessive, causes brake force deficiency etc. a variety of causes, it may appear that the phenomenon of car slipping, car slipping
All occur from elevator stop when, this when installed in one end of main shaft encoder with can be to elevator master control system
Transmission signal, it is, when main axis meets car slipping condition, the signal that encoder just has car slipping is transferred to elevator master
Control system, elevator master control system are connected with magnet control, are slipped what elevator master control system received that encoder transmits
After car signal, electromagnet will be controlled to be powered, realize the forced brake of rope sheave, realize the appearance of anti-slip phenomenon automatically.
With reference to shown in Fig. 1, the signal output part connection of self-resetting switch 14 subtracts the car Control for Speed Limitation letter of journey controller
Number input, the brake signal output end for subtracting journey controller are used for the brake signal input for connecting elevator master control system.
Car top set position detection unit is installed in rate controlling opening position at the top of elevator hoistways, and car bottom set position detection unit is installed in electricity
Terraced shaft bottom rate controlling opening position, elevator hoistways top rate controlling opening position are not higher than well headroom buffer bottom surface, elevator hoistways
Bottom rate controlling opening position is not less than shaft bottom buffer top surface；The signal output part connection of car top set position detection unit subtracts
The car top set signal input part of journey controller, the signal output part connection of car bottom set position detection unit subtract Stroke Control
The car bottom set signal input part of device.
It is illustrated in figure 2 the circuit theory diagrams provided by the invention for subtracting stroke bidirectional automatic anti-running car speed limiting system：
The journey controller that subtracts uses microcontroller U1, microcontroller U1 to use model STM32F103R8T6.
The limiter of speed uses self-resetting switch U2, and Self-resetting speed-limiting switch U2 is UKT self-resetting switch, installed in elevator
On limiter of speed, wherein Self-resetting speed-limiting switch U2 mechanical switch part is that the both ends of lever are connected to and subtract journey controller U1
Between J1-3 pins and J1com pins, Self-resetting speed-limiting switch U2 mechanical switch part one acts, and subtracts journey controller U1's
J1-3 pins just capture level change information, and so as to know, now car speed has exceeded the buffer normal speed to prestore.
Described car top set position detection unit uses the first travel switch S1, and car bottom set position detection unit uses
Second travel switch S2；First travel switch S1 is arranged on the well enclosure of top, and lift car outer wall relevant position is equiped with use
In with the first travel switch S1 coordinate bump against hit bow；Second travel switch S2 is arranged on the well enclosure of bottom, outside lift car
Wall relevant position is equiped with for coordinating what is bumped against to hit bow with the second travel switch S2.
As shown in figure 3, the first travel switch S1 is arranged on the well enclosure at the top of elevator hoistways, and it is not higher than well headroom
The bottom surface of buffer, the second travel switch S2 are arranged on the well enclosure of elevator hoistways bottom, and are buffered not less than shaft bottom
The top surface of device, the first travel switch S1, the second travel switch S2 are installed on same on the vertical line of horizontal plane, car C1
The corresponding first travel switch S1 of outer wall, the second travel switch S2 position be equiped with a vertical integral type and hit bow B1, hit
Bend B1 length close to the outer wall height of car, top, the bottom for hitting bow B1 are respectively set to the inclined inclined-plane of car walls, the
One stroke switch S1 lever is arranged to be lifted up an angle compared to horizontal plane, and the second travel switch S2 lever is arranged to
It is pressed with an angle downwards compared to horizontal plane, the angle is engaged with hitting the respective ramp at bow B1 both ends just, and first, second
Travel switch S1, S2 lever end are provided with a roller, for example hit bow B1 and rise to well headroom with car C1 and bump against first
During travel switch S1, the first travel switch S1 lever can be pushed down, when car leaves, the first travel switch S1 lever can bullet
Open, the angle of inclination of lever and the roller of lever end are provided to protect the first travel switch S1 in order to avoid being damaged, the second row
Cheng Kaiguan S2 are similarly.First, second travel switch S1, S2 is mechanical switch.
As Fig. 2, the first travel switch S1 are connected between microcontroller U1 J1com pins and J1-1 pins, the second row
Cheng Kaiguan S2 are connected between microcontroller U1 J1com pins and J1-2 pins, when the first travel switch S1 or the second stroke
Switch S2 is not hit bow B1 when being pressed onto, in closure state, when the first travel switch S1 or the second travel switch S2 is hit bow B1
When being pressed onto, in off-state, microcontroller U1 accordingly judges according to the level change on J1-1 pins, J1-2 pins.
In the present embodiment, microcontroller U1 brake signal output end J5-3 pins, J5com pins difference connecting brake
The YB pin of energization input two, it is electric on control brake YB.
The first travel switch S1, the second travel switch S2 use model S3BEL-1370, brake model
DQN090。
In car running, Self-resetting speed-limiting switch U2 monitors current car C1 in real time with the rotation of elevator governor
Speed；When car C1 is run to well headroom or shaft bottom, hit that bow B1 bumps against the first travel switch S1 or the second stroke is opened
When closing S2, the first travel switch S1 or the second travel switch S2 disconnect, and microcontroller U1 judges current runback after knowing the information
Position speed-limiting switch U2 status signal, if now Self-resetting speed-limiting switch U2 is normally off, illustrates elevator master control system
Realize normal deceleration, now car speed not over buffer desin speed, now microcontroller U1 be failure to actuate (micro-control
Device U1 protection processed is that the speed for preventing car cushion at collision dangerous situation occurs beyond the desin speed of buffer)；Such as
The current Self-resetting speed-limiting switch U2 of fruit disconnects, and it is specified that microcontroller U1 judges that current car speed has exceeded the buffer to prestore
Speed, control brake YB power-off at once, after brake YB power-off, damper brake locking, so as to brake car movement, so as to realize
Corresponding building is not required to the headroom and bottom space of extra increase elevator, while the situation of buffer cost need not be increased
Under, just can be using the purpose of the elevator of more speed.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (6)
1. one kind subtracts the unidirectional automatic anti-running car speed limiting system of stroke, including subtracts journey controller, limiter of speed, the inspection of car top set position
Survey unit, car bottom set position detection unit, the limiter of speed includes base, on base by main axis be equipped with rope sheave with
Ratchet, the both ends of main shaft are arranged on base by bearing, and rope sheave rotation stop is assemblied on main shaft, and encoder is provided with main shaft,
The side of rope sheave is provided with brake plate device on base, ratchet, ratchet and rope are rotatably equipped with the side of the wheel face of rope sheave
The ratchet torsion spring for matching somebody with somebody the neck card of ratchet turning ratchet wheel and ratchet is provided between wheel, rolling assembling is gone back on the wheel face of rope sheave
There is ratchet location structure, positioning torsion spring, the top pressure end of ratchet location structure and spine are provided between ratchet location structure and rope sheave
Pawl elastic top press-fit, the opposite side of rope sheave wheel face are also rotatably equipped with two gravity drop hammers, are additionally provided with and are being powered on base
Top pressure gravity drop hammer causes the electromagnet that gravity drop hammer opens afterwards, and the tup in gravity drop hammer is convexly equipped with the trigger unit of ratchet location structure
Top when turning to the outer rim of rope sheave with gravity drop hammer press-fit, the hammer handle being convexly equipped with ratchet in gravity drop hammer turn to rope sheave
With the hammer handle top pressure of gravity drop hammer ratchet is separated with ratchet during wheel rim and cause the lifting of ratchet location structure and ratchet pawl reset
Release link, it is characterised in that：Described ratchet is coaxially fixedly installed disc, the outer edge of disc on the wheel face away from gravity drop hammer
Position is laid with self-resetting switch, and each self-resetting switch is on the circumference of a concentric circles of disc, each self-resetting switch
Lever stretches to inner side, and the free end of each lever is on the circumference of one group of concentric circles of disc respectively, and gravity drop hammer is in opening process
In touch each self-resetting switch successively, the encoder is used to be connected with the transmission of elevator master control system, elevator main control system
System is connected with magnet control；Car top set position detection unit is installed in rate controlling opening position at the top of elevator hoistways, car bottom set
Position detection unit is installed in elevator hoistways bottom rate controlling opening position；The signal output part connection of car top set position detection unit
Subtract the car top set signal input part of journey controller, the signal output part connection of car bottom set position detection unit subtracts stroke control
The car bottom set signal input part of device processed, the signal output part connection of self-resetting switch subtract the car Control for Speed Limitation of journey controller
Signal input part, the brake signal output end for subtracting journey controller are used for the brake signal input for connecting elevator master control system
End.
2. according to claim 1 subtract the unidirectional automatic anti-running car speed limiting system of stroke, it is characterised in that：Described disc is
Sheet ring body, fixed calvus is radially laid with the inner hole wall of disc, and fixed calvus is fixed by screws on disc.
3. according to claim 1 or 2 subtract the unidirectional automatic anti-running car speed limiting system of stroke, it is characterised in that：It is described from
Reset switch is fixed on disc by connection sheet, and each connection sheet is radially extended and is wholely set with disc.
4. according to claim 1 subtract the unidirectional automatic anti-running car speed limiting system of stroke, it is characterised in that：Described Self-resetting
Speed-limiting switch is connected to the car Control for Speed Limitation signal input part for subtracting journey controller.
5. subtract the unidirectional automatic anti-running car speed limiting system of stroke according to claim 1 or 4, it is characterised in that：Described sedan-chair
Railway carriage or compartment top set position detection unit uses the first travel switch, and car bottom set position detection unit uses the second travel switch, and first
Travel switch is arranged on the well enclosure of top, lift car outer wall relevant position/be equiped with for coordinating with the first travel switch
What is bumped against hits bow；Second travel switch is arranged on the well enclosure of bottom, and lift car outer wall relevant position is equiped with for the
Two travel switches coordinate what is bumped against to hit bow.
6. subtract the unidirectional automatic anti-running car speed limiting system of stroke according to claim 1 or 4, it is characterised in that：It is described to subtract row
Range controller uses microcontroller, the braking letter that the brake signal output end of microcontroller is used to connect in elevator master control system
Number input.
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| CN201510692322.1A CN105217407B (en) | 2015-10-23 | 2015-10-23 | Subtract the unidirectional automatic anti-running car speed limiting system of stroke |
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| CN201510692322.1A CN105217407B (en) | 2015-10-23 | 2015-10-23 | Subtract the unidirectional automatic anti-running car speed limiting system of stroke |
Publications (2)
| Publication Number | Publication Date |
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| CN105217407A CN105217407A (en) | 2016-01-06 |
| CN105217407B true CN105217407B (en) | 2018-01-12 |
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| CN105923487A (en) * | 2016-06-29 | 2016-09-07 | 西继迅达（许昌）电梯有限公司 | Novel automatic anti-sliding unidirectional automatic-reset speed governor |
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| CN105923486A (en) * | 2016-06-29 | 2016-09-07 | 西继迅达（许昌）电梯有限公司 | Novel unidirectional automatic-reset speed governor capable of monitoring speed |
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| CN105947827A (en) * | 2016-06-29 | 2016-09-21 | 西继迅达（许昌）电梯有限公司 | Novel one-way speed limiter |
| CN105947828A (en) * | 2016-06-29 | 2016-09-21 | 西继迅达（许昌）电梯有限公司 | Novel one-way speed limier with speed monitoring function |
| CN105923499A (en) * | 2016-06-29 | 2016-09-07 | 西继迅达（许昌）电梯有限公司 | Novel automatic reset unidirectional anti-sliding speed governor capable of monitoring speed |
| CN111268532B (en) | 2018-12-04 | 2022-08-30 | 奥的斯电梯公司 | Overspeed protection switch, overspeed governor assembly, and elevator system |
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Address after: 461000 south section of Yanan Road, Xuchang economic and Technological Development Zone, Henan Patentee after: Xiji Xunda Elevator Co., Ltd Address before: 461000 south section of Yanan Road, Xuchang economic and Technological Development Zone, Henan Patentee before: XJ SCHINDLER (XUCHANG) ELEVATOR Co.,Ltd. |