CN207645748U - A kind of anti-fall device, anti-fall mechanism and lifting device - Google Patents
A kind of anti-fall device, anti-fall mechanism and lifting device Download PDFInfo
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- CN207645748U CN207645748U CN201721890569.5U CN201721890569U CN207645748U CN 207645748 U CN207645748 U CN 207645748U CN 201721890569 U CN201721890569 U CN 201721890569U CN 207645748 U CN207645748 U CN 207645748U
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Abstract
The utility model is related to machinery equipment field, a kind of anti-fall device, anti-fall mechanism and lifting device are disclosed.Anti-fall device includes fixed part and is rotationally connected with the anti-fall portion of fixed part, and anti-fall portion has Balance weight end and anti-fall end.Anti-fall portion can rotate between normal position and emergency position；Anti-fall portion spontaneously can turn to emergency position by normal position under the effect of gravity.When external traction piece fracture, Balance weight end can drive anti-fall portion to rotate, and anti-fall end is made to stretch out, in order to be abutted with external limiting section, have the function that limit, prevent from continuing tenesmus, the stable structure is reliable, can effectively prevent the harm brought to people or article of falling that happens suddenly.The anti-fall mechanism of the utility model includes limiting device and anti-fall device.Limiting device is for providing upward support force when anti-fall device falls.The lifting unit of the lifting device of the utility model is provided with the anti-fall mechanism, therefore can effectively prevent the accidental falling of lifting unit.
Description
Technical field
The utility model is related to machinery equipment field, are set in particular to a kind of anti-fall device, anti-fall mechanism and lifting
It is standby.
Background technology
In working sites such as large-sized structural parts, large pressurized vessel welding, tank surface polishing, spray paintings, due to product body
Product is huge, and worker carries out operation of ascending a height, and using simple staircase, worker carries tool, and inconvenience, efficiency are low and existing up and down
Staircase height is fixed, and can not be adjusted, and a frame staircase is difficult to adapt to the product processing of different height.It is flat in some existing liftables
In platform, moved up and down using driving device driving platform, in order to which worker carries out operation in different height.But hoistable platform exists
With the aging of component during use, tractive unit, which may be broken, causes platform to fall, and is caused seriously to the personal safety of worker
It threatens.Existing platform cannot effectively, be reliably prevented precipitate fall.
Utility model content
The purpose of this utility model is to provide a kind of anti-fall device, can effectively, be reliably prevented and be provided with this
The device fall of anti-fall device.
The another object of the utility model is to provide a kind of anti-fall mechanism, can effectively, be reliably prevented setting
There is the device fall of this anti-fall device.
A further object of the utility model is to provide a kind of lifting device, can effectively, be reliably prevented its liter
Drop portion accidental falling due to tractive force disappears.
What the embodiments of the present invention were realized in：
A kind of anti-fall device, including：
Fixed part；And
Anti-fall portion, anti-fall portion have Balance weight end and anti-fall end, interconnecting piece are provided in anti-fall portion；
Wherein, the position in fixed part and anti-fall portion between Balance weight end and anti-fall end be rotatably coupled so that anti-fall
Portion rotates between normal position and emergency position；Interconnecting piece is used to receive the maintenance energy of external traction piece offer so that anti-fall
Portion maintains normal position；After anti-fall portion loses maintenance energy, it can spontaneously be turned to and be answered by normal position under the effect of gravity
Anxious position；In emergency position, the horizontal distance between anti-fall end and anti-fall portion's pivot center is the first pre-determined distance in anti-fall portion；
At normal position, the horizontal distance between anti-fall end and anti-fall portion's pivot center is the second pre-determined distance in anti-fall portion；First is pre-
If distance is more than the second pre-determined distance.
In a kind of embodiment of the utility model, counterweight is provided in Balance weight end, be reused in be supplied to anti-fall portion from
Normal position turns to the torque of emergency position.
In a kind of embodiment of the utility model, connecting portion is between anti-fall end and pivot center.
In a kind of embodiment of the utility model, anti-fall portion includes：
First segment, Balance weight end are located at one end of first segment；
Second segment, second segment are connected to the other end of first segment, and L-shaped strip structure is collectively formed in first segment and second segment；
And
Third section, third section are connect with second segment at the pivot center position in anti-fall portion, and anti-fall end is located at third Duan Yuan
One end from second segment.
In a kind of embodiment of the utility model, fixed part is plate, and the pivot center in anti-fall portion is located at fixed part
Side is provided with accommodating hole on fixed part, and accommodating hole runs through the both sides of fixed part, and Balance weight end can extend into fixation from accommodating hole
The other side in portion.
In a kind of embodiment of the utility model, be arranged at intervals with two mounting portions on fixed part, two mounting portions it
Between be provided with shaft, anti-fall portion is rotationally connected with shaft.
In a kind of embodiment of the utility model, Balance weight end is anti-fall more than hindering relative to the gravity torque of pivot center
The resultant couple that portion is rotated to emergency position.
The utility model proposes a kind of anti-fall mechanism, including limiting device and above-mentioned anti-fall device, limiting device
It is spaced setting in the horizontal direction with anti-fall device；
Wherein, limiting device includes multiple limiting sections for accepting gravity direction load, and limiting section turns with anti-fall portion
Horizontal distance between shaft line is third pre-determined distance, and third pre-determined distance is default more than second less than the first pre-determined distance
Distance enables the anti-fall end in the anti-fall portion that limiting section is connected under emergency position.
The lifting device of the proposition of the utility model comprising：
Above-mentioned anti-fall mechanism；
Holder；
It is configured as lifting unit that can be up and down relative to holder；And
Haulage gear for providing upward pulling force to lifting unit；
Wherein, limiting device is set to holder, and multiple limiting sections are spaced setting in the vertical direction；The fixation of anti-fall device
Portion is set to lifting unit, and interconnecting piece is connect with haulage gear.
In a kind of embodiment of the utility model, haulage gear further includes：
It is rotationally connected with the follower of cantilever tip；
It is rotationally connected with the initiative part of holder bottom end；
The traction piece being sequentially connected between initiative part and follower, traction piece are connect with interconnecting piece；
Driving device for driving initiative part to rotate.
The advantageous effect of the utility model embodiment is：
The anti-fall device of the utility model includes fixed part and is rotationally connected with the anti-fall portion of fixed part, and anti-fall portion has
Balance weight end and anti-fall end are provided with interconnecting piece in anti-fall portion；Anti-fall portion can rotate between normal position and emergency position；Even
Socket part is used to receive the maintenance energy of external traction piece offer so that anti-fall portion maintains normal position；Maintenance is lost in anti-fall portion
After power, anti-fall portion spontaneously can turn to emergency position by normal position under the effect of gravity.Prevent in emergency position in anti-fall portion
The horizontal distance fallen between end and anti-fall portion's pivot center is more than at normal position, between anti-fall end and anti-fall portion's pivot center
Horizontal distance.Therefore when external traction piece fracture, Balance weight end can drive anti-fall portion to rotate, and anti-fall end is made to stretch out, so as to
It is abutted in external limiting section, has the function that limit, prevents from continuing tenesmus, the stable structure is reliable, can effectively prevent
Happen suddenly the harm brought to people or article of falling.
Anti-fall mechanism provided by the utility model includes limiting device, and limiting device and anti-fall device are in the horizontal direction
Interval setting.There is the limiting section protruded to anti-fall device, limiting section for being connected to emergency position upwards on limiting device
The anti-fall end in anti-fall portion.When external traction piece is normally drawn, anti-fall portion is in normal position, and anti-fall end is not to limit at this time
Device stretch out, therefore anti-fall device can relative limit device vertical direction move, without being abutted with limiting device.Work as traction
When part is broken, anti-fall end is stretched into limiting device, can be connected to limiting section, therefore anti-fall device is moved downward by limitation, is prevented
Stopped it is subsequent fall, ensured the personal safety of worker or equipment, article avoided to be damaged because falling.
Lifting device provided by the utility model includes above-mentioned anti-fall mechanism, and limiting device is set to the branch of lifting gear
On frame, and anti-fall device is set on lifting unit, lifting unit can manned or loading, and by haulage gear draw and height
Direction is removable.The interconnecting piece of anti-fall device connect with haulage gear and anti-fall portion is made to be maintained at normal position.With above-mentioned principle
Identical, when haulage gear loses the tractive force to lifting gear, the anti-fall portion of anti-fall device goes to emergency position, is filled with limit
It sets cooperation and generates anti-fall effect.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of anti-fall device in the utility model embodiment；
Fig. 2 is the partial sectional view of anti-fall device in the utility model embodiment；
Fig. 3 is the anti-fall portion of anti-fall device in the utility model embodiment in entopic schematic diagram；
Fig. 4 is schematic diagram of the anti-fall portion in emergency position of anti-fall device in the utility model embodiment；
Fig. 5 is the first visual angle schematic diagram of lifting device in the utility model embodiment.
Fig. 6 is the enlarged drawing of part VI in Fig. 5；
Fig. 7 is the enlarged drawing of part VII in Fig. 5；
Fig. 8 is the enlarged drawing of part VIII in Fig. 5；
Fig. 9 is the second visual angle schematic diagram of lifting device in the utility model embodiment；
Figure 10 is the enlarged drawing of part X in Fig. 9；
Figure 11 is the location diagram in entopic anti-fall portion and limiting section in the present embodiment；
Figure 12 is the anti-fall portion of emergency position and the location diagram of limiting section in the present embodiment；
Figure 13 is the anti-fall portion of emergency position and the location diagram of limiting section in another embodiment.
Icon：100- anti-fall devices；110- fixed parts；111- mounting portions；112- shafts；The stop sections 113-；114- is open
Pin；115- thrust washers；117- accommodating holes；The anti-fall portions 120-；The anti-fall ends 120a-；120b- Balance weight ends；122- first segments；123-
Second segment；124- third sections；125- matches repeated hole；126- interconnecting pieces；200- limiting devices；210- fixed plates；220- limiting sections；
300- lifting devices；310- pedestals；320- columns；321- sliding slots；322- guide wheels；323- wheel caps；325- connecting rods；330- is lifted
Portion；340- driving devices；342- initiative parts；344- followers；346- traction pieces.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the utility model embodiment, it should be noted that term "upper", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter
Change description, do not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and
Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area
Divide description, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" refers to only that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art
Language " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, and can also be detachable for example, it may be being fixedly connected
Connection, or be integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings
Condition understands concrete meaning of the above-mentioned term in the utility model embodiment.
Embodiment
Fig. 1 is the structural schematic diagram of anti-fall device 100 in the utility model embodiment.Fig. 1 is please referred to, the present embodiment provides
A kind of anti-fall device 100, for the equipment mounted on that need to prevent from falling comprising fixed part 110 and be rotationally connected with solid
Determine the anti-fall portion 120 in portion 110.Anti-fall portion 120 can switch to emergency position by rotating from normal position.Thus to outside
Limiting device 200 (see Fig. 5) is stretched out and is abutted therewith, reaches limit effect.
Fig. 2 is the partial sectional view of anti-fall device 100 in the utility model embodiment.Fig. 2 is please referred to, in the present embodiment
In, fixed part 110 is plate, preferably rectangle tabular, under normal use state, the length direction of fixed part 110 with
Gravity direction is consistent.There are two mounting portion 111, two mounting portions 111 to be spaced in the horizontal direction for the one side projection of fixed part 110
Setting.In the present embodiment, two mounting portions 111 are located substantially at the centre of 110 length direction of fixed part.A piece shaft 112 is same
When run through two mounting portions 111, one end of shaft 112 has the stop section 113 than 112 diameter bigger of shaft, the other end logical
A split pin 114 is crossed to be limited so that shaft 112 is fixed in the horizontal direction relative to two mounting portions 111.Two
112 part of shaft between mounting portion 111 is used for installing the anti-fall portion 120 of rotation connection.In the present embodiment, shaft 112
Axis is parallel to fixed part 110, it should be at horizontal state when anti-fall device 100 uses.
In order to make anti-fall portion 120 between two mounting portions 111 will not play in the horizontal direction, the left side in anti-fall portion 120
Thrust washer 115 is respectively set between right both sides and two mounting portions 111.
In the present embodiment, fixed part 110 be provided between the upper and lower every two accommodating holes 117, accommodating hole 117 is through solid
Determine the both sides in portion 110, shaft 112 and mounting portion 111 are respectively positioned between two accommodating holes 117.Balance weight end 120b can be from top
Accommodating hole 117 extend into the other side of fixed part 110.Opening up for accommodating hole 117 is to make anti-fall portion 120 freer
Ground rotation is stopped without being fixed portion 110.The accommodating hole 117 of lower section is that Balance weight end 120b can not be by answering reaching
When anxious position, upper edge can abut anti-fall portion 120, to prevent from further rotating.In other embodiments of the utility model,
The accommodating hole 117 of 110 lower end of fixed part may not necessarily be arranged.
Fig. 3 is the anti-fall portion 120 of anti-fall device 100 in the utility model embodiment in entopic schematic diagram；Fig. 4 is
Schematic diagram of the anti-fall portion 120 of anti-fall device 100 in emergency position in the utility model embodiment.Incorporated by reference to Fig. 1 to Fig. 4,
In the present embodiment, anti-fall portion 120 includes substantially L-shaped strip structure.Anti-fall portion 120 may include three parts：First segment
122, second segment 123 and third section 124.Wherein, second segment 123 and third section 124 are connected to form strip, second segment 123 with
Third section 124 is connected at the pivot center in entire anti-fall portion 120, i.e., the position of shaft 112 is as second segment 123 and third section
124 boundary position.One end of first segment 122 is connected to one end far from third section 124 on second segment 123, it is preferable that it is another
One end extends perpendicular to second segment 123.
In the present embodiment, one end of the separate shaft 112 of third section 124 is anti-fall end 120a, and first segment 122 is far from the
Two section 123 one end is Balance weight end 120b, and Balance weight end 120b is provided with repeated hole 125, in some embodiments of the utility model
In, with being equipped with counterweight (not shown) at repeated hole 125.First segment 122 and 123 junction of second segment are provided with interconnecting piece 126, use
It is connect in external traction piece 346, enables anti-fall portion 120 by external upward tractive force, also enable anti-fall portion 120
It keeps being in normal position under the action of external traction piece 346.In the present embodiment, interconnecting piece 126 is a through-hole, at this
In the other embodiment of utility model, interconnecting piece 126 could be provided as other 346 fixed structures of convenient and external traction piece.
For in the present embodiment, normal position is in anti-fall portion 120, anti-fall end 120a downward, second segment 123
With the extending direction substantially vertical direction of third section 124.124 generally horizontal direction of third section, and worn from accommodating hole 117
It crosses.Balance weight end 120b be more than relative to the gravity torque of the pivot center in anti-fall portion 120 hinder anti-fall portion 120 from normal position to
The resultant couple of emergency position rotation, which includes gravity torques and rotation of the anti-fall end 120a relative to pivot center
Moment of friction can make anti-fall portion 120 spontaneously can turn to emergency position by normal position under the effect of gravity in this way；It is anti-fall
When portion 120 is in emergency position, horizontal distance between 120 pivot center of anti-fall end 120a and anti-fall portion be first it is default away from
From；At normal position, the horizontal distance between 120 pivot center of anti-fall end 120a and anti-fall portion is second pre- in anti-fall portion 120
If distance；First pre-determined distance is more than the second pre-determined distance.First pre-determined distance and the second pre-determined distance are respectively third section 124
In the distance of emergency position and farthest apart from pivot center horizontal interval point under normal position.I other words when anti-fall portion 120
When turning to emergency position from normal position, anti-fall end 120a can be in the horizontal direction far from fixed part 110, and to external limit
Position portion 220 (see Figure 10) is stretched out.
Therefore, after the maintenance energy that interconnecting piece 126 loses external offer, anti-fall portion 120 can be in the weight of Balance weight end 120b
It " falls down " under force effect.Anti-fall end 120a stretches out at this time, is abutted against with external limiting section 220, to reach the anti-fall dress of limitation
Set 100 effects further fallen downwards.
Fig. 5 is the first visual angle schematic diagram of lifting device 300 in the utility model embodiment.It please refers to Fig. 5 and combines Fig. 1
To Fig. 4, the present embodiment also provides a kind of anti-fall mechanism and a kind of lifting device 300, and the anti-fall mechanism of the present embodiment includes anti-
Fall device 100 and with the spaced limiting device 200 in the horizontal direction of anti-fall device 100, in the present embodiment, limit
Device 200 includes fixed plate 210 and the multiple limiting sections 220 being set in the one side of fixed plate 210.Fixed plate 210 is perpendicular
The bar shaped plate set is erected, multiple limiting sections 220 are alternatively arranged in fixed plate 210 along the length direction of fixed plate 210, limiting section
220 load for accepting gravity direction.The cooperation principle of limiting device 200 and anti-fall device 100 described in detail below.
Figure 11 is the location diagram in entopic anti-fall portion 120 and limiting section 220 in the present embodiment；Figure 12 is this reality
Apply the location diagram in the anti-fall portion 120 and limiting section 220 of emergency position in example.Figure 11 and Figure 12 are please referred to, if limiting section 220
Horizontal distance with the pivot center in anti-fall portion 120 is third pre-determined distance, is more than the second pre-determined distance but is less than first in advance
If distance.In this way so that anti-fall portion 120 is at normal position, anti-fall end 120a will not be contacted with limiting section 220, therefore anti-fall dress
Set 100 can along the extending direction proper motion of fixed plate 210, anti-fall end 120a and limiting section 220 in the horizontal direction between begin
Gap appropriate is kept eventually；When anti-fall portion 120 is because losing tractive force F, anti-fall device 100 is from falling, and anti-fall portion 120 is from just at this time
Normal position spontaneously turns to emergency position (Figure 12), and Balance weight end 120b is fixed the (ginseng of accommodating hole 117 of 110 lower end of portion at this time
See Fig. 2) upper edge abutting, anti-fall portion 120 cannot be rotated further, and anti-fall end 120a can be connected to one of limiting section
220, achieve the effect that limit, it is therefore prevented that anti-fall device 100 further falls.Figure 13 is emergency position in another embodiment
Anti-fall portion 120 and limiting section 220 location diagram, the lower end of the fixed part 110 of the anti-fall device 100 of this embodiment does not have
Accommodating hole 117 (referring to Fig. 2) is set, therefore Balance weight end 120b is directly connected on the plate body of fixed part 110.
Please continue to refer to Fig. 5, the lifting device 300 of the utility model includes pedestal 310, holder, be configured as can be opposite
In the up and down lifting unit 330 of holder, the haulage gear for providing upward pulling force to lifting unit 330 and above-mentioned anti-fall
Mechanism.The lifting device 300 of the present embodiment can be applied to worker and ascend a height operation.Lifting unit 330 is designed as convenient for people's standing
Flat form.Wherein, anti-fall device 100 is set on lifting unit 330, and limiting device 200 is fixedly installed on branch in a vertical manner
On frame, limiting section 220 is towards anti-fall device 100；The fixed part 110 of anti-fall device 100 is set to lifting unit 330, interconnecting piece
126 connect with haulage gear.
In the present embodiment, pedestal 310 is ensured using proximate matter and plank welding is thickeied under the whole center of gravity of lifting device 300
Lower position is dropped to, and the direction that pedestal 310 is leant out to lifting unit 330 lengthens, and ensures whole stabilization, is not prone to tip over.
Fig. 6 is the enlarged drawing of part VI in Fig. 5.Incorporated by reference to Fig. 5 and Fig. 6, in the present embodiment, holder includes four vertical
It is built in the column 320 of pedestal 310, lifting unit 330 is slidably connected with column 320.The inside of specific column 320 is provided with perpendicular
Histogram is provided with guide wheel 322 on lifting unit 330 to the sliding slot 321 of extension, guide wheel 322 be embedded into sliding slot 321 and with sliding slot 321
Cooperation, specifically, 322 circumferential surface of guide wheel coordinates with 321 side clearance of sliding slot.Preferably pacify the outer end of the stretching sliding slot 321 of guide wheel 322
Equipped with wheel cap 323, wheel cap 323 can avoid 322 end of guide wheel by the slot of sliding slot 321 along 322 axial position of limitation guide wheel
With slot bottom friction.The lid of normal mounting state guide wheel 322 is not with slot along contacting, if occurring to sink partially, the lid of guide wheel 322 avoids guide wheel 322
Greater impact is generated to 321 wall of sliding slot.Each sliding slot 321 is correspondingly arranged 4 guide wheels 322, in other embodiment, can also correspond to
2 or multiple guide wheels 322 are set.The fit system of sliding slot 321 and guide wheel 322 makes the operation of lifting unit 330 more stablize.
Two columns 320 positioned at 330 the same side of lifting unit carry out structural strengthening by more connecting rods 325.At this
In embodiment, one of column 320 is fixedly installed cat ladder, is made with ascending a height when staff being facilitated to safeguard lifting unit 330
With.
Fig. 9 is the second visual angle schematic diagram of lifting device 300 in the utility model embodiment；Figure 10 is part X in Fig. 9
Enlarged drawing；Fig. 9 and Figure 10 are please referred to, in the present embodiment, the anti-fall portion 120 of anti-fall mechanism is set on lifting unit 330.Specifically
, fixed part 110 is fixedly installed on the bottom margin of lifting unit 330, and the limiting device 200 of anti-fall mechanism is fixedly installed in
In multiple connecting rods 325 of holder, vertically it is arranged and is spaced in the horizontal direction with anti-fall device 100, limiting section
Side level protrusion where 220 towards anti-fall device 100.Fixed part 110 is provided with the one of shaft 112 facing towards limiting device
200。
Fig. 7 is the enlarged drawing of part VII in Fig. 5；Fig. 8 is the enlarged drawing of part VIII in Fig. 5.Please refer to Fig. 7 and Fig. 8 simultaneously
In conjunction with Fig. 5, in the present embodiment, haulage gear includes the follower 344 for being rotationally connected with cantilever tip, is rotationally connected with holder
The initiative part 342 of bottom end, the traction piece 346 being sequentially connected between initiative part 342 and follower 344 and driving initiative part
The driving device 340 of 342 rotations.Driving device 340 is worm-gear speed reducer, and traction piece can be given after being connect with external power supply
346 provide power, and due to the reverse self-locking characteristic of worm and gear, after power-off, lifting unit 330 is not easy with traction piece 346
It slides.In the present embodiment, the motor of driving device 340 selects fire-proof motor, it is ensured that the safety of the operations such as spray painting.
In the present embodiment, initiative part 342 is sprocket wheel, and the driving device 340 being arranged on pedestal 310 drives.From
Dynamic portion 344 is sprocket wheel, and traction piece 346 is chain, and chain is fixedly connected with the interconnecting piece 126 in anti-fall portion 120, for lifting unit
330 provide upward tractive force, which is also for maintaining anti-fall portion 120 to be in entopic maintenance energy simultaneously.
In the present embodiment, driving device 340 drives two initiative parts 342 to rotate, correspondingly, two followers 344 are arranged in haulage gear
With two traction pieces 346, two anti-fall devices 100 are set on lifting unit 330, two limiting devices 200 are set on holder.In this way
It ensure that the uniform force of 330 both sides of lifting unit.It should be appreciated that in the other embodiment of the utility model, traction piece 346 can
Think steel wire rope, follower 344 is pulley in this case, and initiative part 342 can be a cylinder for being used for Wound steel rope.
The operation principle of the lifting device 300 of the present embodiment is：
When being normally carried out lifting work, traction piece 346 provides tractive force in 126 position of interconnecting piece, can be lifting unit 330
Rise or decline, simultaneously because the effect of tractive force, anti-fall portion 120 is in normal position, and anti-fall end 120a will not be limited
The obstruction of position device 200.When traction piece 346 is broken, tractive force is lost at interconnecting piece 126.Balance weight end 120b drops first, band
Dynamic anti-fall portion 120 rotates, and when turning to emergency position, anti-fall end 120a can be connected to limiting section 220, to stop continuing
Tenesmus.Since anti-fall device 100 is fixedly connected on lifting unit 330, so lifting unit 330 is also able to stop tenesmus.
In conclusion the anti-fall device of the utility model includes fixed part and is rotationally connected with the anti-fall portion of fixed part,
Anti-fall portion has Balance weight end and anti-fall end, and interconnecting piece is provided in anti-fall portion；It anti-fall portion can be in normal position and emergency position
Between rotate；Interconnecting piece is used to receive the maintenance energy of external traction piece offer so that anti-fall portion maintains normal position；Anti-
After pendant portion loses maintenance energy, anti-fall portion spontaneously can turn to emergency position by normal position under the effect of gravity.Anti-fall portion exists
When emergency position, horizontal distance between anti-fall end and anti-fall portion's pivot center is more than at normal position, anti-fall end with it is anti-fall
Horizontal distance between portion's pivot center.Therefore when external traction piece fracture, Balance weight end can drive anti-fall portion to rotate, and make to prevent
It falling end to stretch out, in order to be abutted with external limiting section, has the function that limit, prevents from continuing tenesmus, the stable structure is reliable,
It can effectively prevent the harm brought to people or article of falling that happens suddenly.
Anti-fall mechanism provided by the utility model includes limiting device, and limiting device and anti-fall device are in the horizontal direction
Interval setting.There is the limiting section protruded to anti-fall device, limiting section for being connected to emergency position upwards on limiting device
The anti-fall end in anti-fall portion.When external traction piece is normally drawn, anti-fall portion is in normal position, and anti-fall end is not to limit at this time
Device stretch out, therefore anti-fall device can relative limit device vertical direction move, without being abutted with limiting device.Work as traction
When part is broken, anti-fall end is stretched into limiting device, can be connected to limiting section, therefore anti-fall device is moved downward by limitation, is prevented
Stopped it is subsequent fall, ensured the personal safety of worker or equipment, article avoided to be damaged because falling.
Lifting device provided by the utility model includes above-mentioned anti-fall mechanism, and limiting device is set to the branch of lifting gear
Frame, and anti-fall device is set on lifting unit, lifting unit can manned or loading, and by haulage gear draw and in height side
To removable.The interconnecting piece of anti-fall device connect with haulage gear and anti-fall portion is made to be maintained at normal position.With above-mentioned principle phase
Together, when haulage gear loses the tractive force to lifting gear, the anti-fall portion of anti-fall device goes to emergency position, with limiting device
Cooperation generates anti-fall effect.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of anti-fall device, which is characterized in that including：
Fixed part；And
Anti-fall portion, the anti-fall portion have Balance weight end and anti-fall end, interconnecting piece are provided in the anti-fall portion；
Wherein, the position in the fixed part and the anti-fall portion between the Balance weight end and the anti-fall end with rotationally connect
It connects, so that the anti-fall portion rotates between normal position and emergency position；The interconnecting piece is used to receive external traction piece
The maintenance energy of offer is so that the anti-fall portion maintains the normal position；It, can after the anti-fall portion loses the maintenance energy
Emergency position is spontaneously turned to by normal position under the effect of gravity；The anti-fall portion is in emergency position, the anti-fall end
Horizontal distance between anti-fall portion's pivot center is the first pre-determined distance；The anti-fall portion is described at normal position
Horizontal distance between anti-fall end and anti-fall portion's pivot center is the second pre-determined distance；First pre-determined distance is more than institute
State the second pre-determined distance.
2. anti-fall device according to claim 1, which is characterized in that be provided with counterweight, the counterweight in the Balance weight end
For being supplied to the anti-fall portion to turn to from the normal position torque of the emergency position.
3. anti-fall device according to claim 1, which is characterized in that the connecting portion is in the anti-fall end and described turn
Between shaft line.
4. anti-fall device according to claim 2, which is characterized in that the anti-fall portion includes：
First segment, the Balance weight end are located at one end of the first segment；
Second segment, the second segment are connected to the other end of the first segment, and L is collectively formed in the first segment and the second segment
Shape strip structure；And
Third section, the third section are connect with the second segment at the pivot center position in the anti-fall portion, the anti-fall end
Positioned at the described one end of third section far from the second segment.
5. anti-fall device according to claim 4, which is characterized in that the fixed part is plate, and the anti-fall portion turns
Shaft line is located at the side of the fixed part, and accommodating hole is provided on the fixed part, and the accommodating hole runs through the fixed part
Both sides, the Balance weight end can extend into the other side of the fixed part from the accommodating hole.
6. anti-fall device according to claim 1, which is characterized in that be arranged at intervals with two installations on the fixed part
Portion is provided with shaft between two mounting portions, and the anti-fall portion is rotationally connected with the shaft.
7. anti-fall device according to claim 1, which is characterized in that weight of the Balance weight end relative to the pivot center
Force square is more than the resultant couple for hindering the anti-fall portion to be rotated to the emergency position.
8. a kind of anti-fall mechanism, which is characterized in that the anti-fall mechanism includes any in limiting device and such as claim 1-7
Anti-fall device described in, the limiting device are spaced setting in the horizontal direction with the anti-fall device；
Wherein, the limiting device includes multiple limiting sections for accepting gravity direction load, and the limiting section is prevented with described
Horizontal distance between the pivot center in pendant portion is third pre-determined distance, the third pre-determined distance be less than described first it is default away from
From and be more than second pre-determined distance, enable the anti-of the anti-fall portion that the limiting section is connected under the emergency position
Fall end.
9. a kind of lifting device, which is characterized in that the lifting device includes：
Anti-fall mechanism as claimed in claim 8；
Holder；
It is configured as lifting unit that can be up and down relative to the holder；And
Haulage gear for providing upward pulling force to the lifting unit；
Wherein, the limiting device is set to the holder, and multiple limiting sections are spaced setting in the vertical direction；It is described anti-
The fixed part of fall device is set to the lifting unit, and the interconnecting piece is connect with the haulage gear.
10. lifting device according to claim 9, which is characterized in that the haulage gear further includes：
It is rotationally connected with the follower of the cantilever tip；
It is rotationally connected with the initiative part of the holder bottom end；
The traction piece being sequentially connected between the initiative part and the follower, the traction piece connect with the interconnecting piece
It connects；
Driving device for driving the initiative part rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890569.5U CN207645748U (en) | 2017-12-28 | 2017-12-28 | A kind of anti-fall device, anti-fall mechanism and lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890569.5U CN207645748U (en) | 2017-12-28 | 2017-12-28 | A kind of anti-fall device, anti-fall mechanism and lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207645748U true CN207645748U (en) | 2018-07-24 |
Family
ID=62875856
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721890569.5U Active CN207645748U (en) | 2017-12-28 | 2017-12-28 | A kind of anti-fall device, anti-fall mechanism and lifting device |
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| Country | Link |
|---|---|
| CN (1) | CN207645748U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986202A (en) * | 2017-12-28 | 2018-05-04 | 山东豪迈机械制造有限公司 | A kind of anti-fall device, anti-fall mechanism and lifting device |
| CN115215252A (en) * | 2022-08-30 | 2022-10-21 | 湖南三一中型起重机械有限公司 | Lifts and Cranes |
-
2017
- 2017-12-28 CN CN201721890569.5U patent/CN207645748U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986202A (en) * | 2017-12-28 | 2018-05-04 | 山东豪迈机械制造有限公司 | A kind of anti-fall device, anti-fall mechanism and lifting device |
| CN107986202B (en) * | 2017-12-28 | 2024-08-02 | 山东豪迈机械制造有限公司 | Anti-falling device, anti-falling mechanism and lifting equipment |
| CN115215252A (en) * | 2022-08-30 | 2022-10-21 | 湖南三一中型起重机械有限公司 | Lifts and Cranes |
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