CN219860476U - Limiting protection device and safety lock - Google Patents
Limiting protection device and safety lock Download PDFInfo
- Publication number
- CN219860476U CN219860476U CN202321277357.5U CN202321277357U CN219860476U CN 219860476 U CN219860476 U CN 219860476U CN 202321277357 U CN202321277357 U CN 202321277357U CN 219860476 U CN219860476 U CN 219860476U
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- trigger block
- elastic element
- trigger
- limit
- limit switch
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- 230000001012 protector Effects 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of lifting equipment, and provides a limiting protection device and a safety lock, wherein the limiting protection device comprises a limiting switch, a sleeve, a trigger block and an elastic element, the sleeve is provided with an inner cavity, the trigger block is limited in the inner cavity, the trigger block is suitable for moving in the inner cavity, and the limiting switch is arranged on a moving path of the trigger block; one end of the elastic element is abutted with the sleeve, and the other end is abutted with the trigger block; the trigger block is suitable for switching between a first position and a second position, and in the first position, the trigger piece on the rope props against the trigger block, so that the trigger block extrudes the elastic element to elastically deform, and the trigger block triggers the limit switch to act; in the second position, the elastic restoring force of the elastic element enables the trigger block to be far away from the limit switch. The limit protection device provided by the utility model can ensure the stable and reliable stroke limit function of the lifting equipment and improve the safety of the lifting equipment.
Description
Technical Field
The utility model relates to the technical field of lifting equipment, in particular to a limiting and protecting device and a safety lock.
Background
Currently, lifting devices are widely used in working environments for aloft work. In order to avoid danger of top or bottom rushing in the operation process of the lifting equipment, a limit switch is usually arranged on the lifting equipment at present, trigger pieces for triggering the limit switch are correspondingly arranged at the top position and the bottom position of the operation route of the lifting equipment, and when the lifting equipment is operated to the top position or the bottom position of the operation route of the lifting equipment, the trigger pieces can trigger the limit switch to act so as to stop the operation of the lifting equipment.
However, the working environment of the lifting device is generally severe, and the trigger piece arranged on the surface of the building and the exposed limit switch are easily damaged by external factors, so that the dangerous condition that the limit switch cannot be triggered to cause the lifting device to punch the top or bottom can possibly occur, and potential safety hazards exist.
Disclosure of Invention
The first aspect of the utility model provides a limit protection device, which can trigger a limit switch to stop the operation of lifting equipment when the lifting equipment is operated to an end point, so that the operation safety of the lifting equipment is improved.
A second aspect of the utility model provides a security lock.
In order to achieve the above object, a first aspect of the present utility model provides a limit protector, which is connected to a safety lock body of a lifting device, and a rope sequentially passes through the safety lock body and the limit protector;
the limit protection device comprises a limit switch, a sleeve, a trigger block and an elastic element, wherein:
the sleeve is provided with an inner cavity, the trigger block is limited in the inner cavity and is suitable for moving in the inner cavity, and the limit switch is arranged on the moving path of the trigger block;
one end of the elastic element is abutted with the sleeve, and the other end of the elastic element is abutted with the trigger block;
the trigger block is suitable for switching between a first position and a second position, a trigger piece on the rope props against the trigger block in the first position, so that the trigger block extrudes the elastic element to elastically deform, and the trigger block triggers the limit switch to act; in the second position, the elastic restoring force of the elastic element enables the trigger block to be far away from the limit switch.
Optionally, the sleeve is provided with a step, a flange is arranged on the outer surface of the trigger block, the elastic element is sleeved on the trigger block, one end of the elastic element is abutted to the step, and the other end of the elastic element is abutted to the flange;
the step divides the inner cavity into a first space and a second space, the limit switch is arranged in the first space, and the trigger block is arranged in the second space;
in the first position, the triggering block enters the first space towards one end of the step to trigger the limit switch to act; in the second position, the elastic restoring force of the elastic element pushes the trigger block to leave the first space.
Optionally, an elastic guard is also included;
the rigidity of the elastic protection piece is higher than that of the elastic element, and one end of the elastic protection piece is abutted with one end of the trigger block, which is far away from the limit switch.
Optionally, the device further comprises a trigger block end cover, wherein one end of the elastic protection piece is fixed at one end of the trigger block far away from the limit switch by the trigger block end cover.
Optionally, the sleeve and the trigger block are provided with rope holes for the rope to pass through, and the elastic protection piece is sleeved on the rope.
Optionally, the limit protection device further comprises an installation seat, the installation seat is connected with the safety lock, and the sleeve is connected with the installation seat.
In a second aspect, the present utility model provides a safety lock comprising a safety lock body and a limit protector as defined in any one of the preceding claims.
The above-described one or more embodiments of the present utility model have at least the following advantageous effects:
the limit protection device is integrated in the safety lock of the lifting equipment, the limit protection device can provide protection for the limit switch to prevent the limit switch from being damaged and invalid, and the trigger piece arranged on the rope is not easy to damage compared with the trigger piece arranged on the outer wall of a building, so that the stable and reliable stroke limit function of the lifting equipment can be ensured, and the safety of the lifting equipment is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a security lock provided by the present utility model;
FIG. 2 is a schematic cross-sectional view of the limit protection device according to the present utility model;
FIG. 3 is a schematic diagram of a cross-sectional structure of a limit protection device according to the present utility model;
fig. 4 is a schematic cross-sectional view of a connection between a safety lock body and a mounting base according to the present utility model.
Reference numerals:
10. a limit protection device; 20. a safety lock body; 30. a rope; 40. a trigger; 50. a hook;
1. a limit switch; 2. a sleeve; 21. an inner cavity; 22. a step; 23. a second space; 24. a first space; 3. a trigger block; 31. a flange; 4. an elastic element; 5. an elastic protection member; 6. a mounting base; 7. a sleeve end cap; 8. triggering the end cover of the block.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Embodiments of the present utility model are described below with reference to fig. 1 to 4. It should be understood that the following description is only illustrative of embodiments of the utility model and is not intended to limit the utility model in any way.
In order to improve the operation safety of lifting equipment, the utility model provides a protective fixing assembly of a button switch and a climbing-free device. The following first describes a protective fixing assembly of a push button switch provided by the present utility model.
As shown in fig. 1, the limit protector 10 provided by the utility model is connected with the safety lock body 20 of the lifting device, and the rope 30 sequentially passes through the safety lock body 20 and the limit protector 10. As shown in fig. 2 and 3, the limit protection device 10 includes a limit switch 1, a sleeve 2, a trigger block 3, and an elastic element 4, wherein: the sleeve 2 is provided with an inner cavity 21, the trigger block 3 is limited in the inner cavity 21, the trigger block 3 is suitable for moving in the inner cavity 21, and the limit switch 1 is arranged on the moving path of the trigger block 3; one end of the elastic element 4 is abutted with the sleeve 2, and the other end is abutted with the trigger block 3; the trigger block 3 is suitable for switching between a first position and a second position, and in the first position, the trigger piece 40 on the rope 30 props against the trigger block 3, so that the trigger block 3 extrudes the elastic element 4 to elastically deform, and the trigger block 3 triggers the limit switch 1 to act; in the second position, the elastic restoring force of the elastic element 4 moves the trigger block 3 away from the limit switch 1.
Fig. 2 is a schematic cross-sectional view of the limit protection device 10 when the trigger block 3 is in the first position, and fig. 3 is a schematic cross-sectional view of the limit protection device 10 when the trigger block 3 is in the second position. As shown in fig. 2 and 3, the sleeve 2 may have a cylindrical structure, and the trigger block 3 may have a cylindrical structure that moves in the inner cavity 21 without being separated from the sleeve 2. The limit switch 1 is disposed in the inner cavity 21 and is located on the moving path of the trigger block 3. The elastic element 4 is disposed in the inner cavity 21, and two ends of the elastic element 4 are respectively abutted against the inner wall of the sleeve 2 and the outer surface of the trigger block 3. One end of the trigger block 3 is abutted with the elastic element 4, one end far away from the elastic element 4 can extend out of the inner cavity 21, and when the lifting device is operated to a designated position (such as the highest position or the lowest position where the lifting device can be operated), one end of the trigger block 3 extending out of the inner cavity 21 can be abutted by the trigger piece 40 to move, so that the limit switch 1 is triggered to stop the lifting device.
When the lifting device moves to the position of the trigger piece 40 along the rope 30, the trigger piece 40 can prop against the trigger block 3, in this case, the trigger block 3 can move towards the direction of the limit switch 1, and in the moving process, the trigger block 3 can squeeze the elastic element 4 to enable the elastic element 4 to elastically deform. When the trigger block 3 moves to a position (i.e., a first position) where the limit switch 1 is triggered, the limit switch 1 electrically connected to the control circuit of the lifting device is triggered to act, and the control circuit of the lifting device is cut off, so that the lifting device stops running. When the lifting device is restarted, the trigger piece 40 does not abut against the trigger block 3 any more, and in this case, the elastic restoring force of the elastic element 4 can push the trigger block 3 to move to the second position in a direction away from the limit switch 1, so as to release the trigger limit switch 1.
The elastic element 4 may be an elastic element such as a spring or a rubber column, and is not specifically limited herein; the limit switch 1 may be a proximity switch or a contact switch, and is not particularly limited herein.
Unlike the existing limit protection assembly, the limit protection device 10 provided by the embodiment of the utility model is integrated in the safety lock of the lifting device, the limit protection device 10 can provide protection for the limit switch 1 to prevent the limit switch from damage and failure, and the trigger piece 40 arranged on the rope 30 is not easy to damage compared with the trigger piece arranged on the outer wall of the building, so that the stroke limit function of the lifting device can be ensured to be stable and reliable, and the safety of the lifting device is improved.
As shown in fig. 2, 3, in some examples of embodiments of the utility model, the sleeve 2 may be provided with a step 22 and the outer surface of the trigger block 3 may be provided with a flange 31. The step 22 divides the inner cavity 21 into a first space 24 and a second space 23, the limit switch 1 is arranged in the first space 24, and the trigger block 3 is arranged in the second space 23. The elastic element 4 is sleeved on the trigger block 3, one end of the elastic element 4 is abutted against the step 22, and the other end is abutted against the flange 31. In the first position, the trigger block 3 is directed towards one end of the step 22, i.e. towards one end of the limit switch 1, and can pass through the step 22 to enter the first space, and the limit switch 1 is triggered to act to stop the lifting device, in which case the flange 31 and the step 22 abut against the elastic element 4 from both ends to elastically deform the same. In the second position, the elastic restoring force of the elastic element 4 can push the trigger block 3 away from the first space, thereby contacting the trigger limit switch 1.
As shown in fig. 2 and 3, in some examples of embodiments of the present utility model, the limit guard 10 may further include an elastic guard 5. One end of the elastic protection piece 5 is abutted with one end of the trigger block 3 away from the limit switch 1, and the rigidity of the elastic protection piece 5 is higher than that of the elastic element 4. Thus, when the trigger block 3 is in the first position, the elastic protection piece 5 contacts the trigger piece 40, and since the rigidity of the elastic protection piece 5 is higher than that of the elastic element 4, the elastic protection piece 5 can push the trigger piece 3 without large elastic deformation so as to enable the elastic element 4 to be elastically deformed, thereby triggering the limit switch 1. The elastic protection piece 5 can prevent sundries from entering the limit protection device 10 to damage the limit protection device, and can play a buffering role when the limit switch 1 is triggered, so that the limit switch 1 is prevented from being damaged by inertial movement when the lifting equipment stops running.
The elastic guard 5 may be a rubber tube, a spring, or the like, and may satisfy the condition that the stiffness is stronger than the stiffness of the elastic element 4.
As shown in fig. 2 and 3, in some examples of embodiments of the present utility model, the limit guard 10 may further include a trigger block end cap 8. The trigger block end cover 8 is provided with a through hole, the elastic protection piece 5 can pass through the through hole to prop against one end of the trigger block 3 far away from the limit switch 1, and the trigger block end cover 8 can fix the elastic protection piece 5 on the trigger block 3. The trigger block end cover 8 can be detachably connected with the trigger block 3 in a bolt connection mode.
As shown in fig. 2 and 3, in some examples of embodiments of the present utility model, the limit guard 10 may further include a sleeve end cap 7. The sleeve end cap 7 is mounted at the end of the sleeve 2 remote from the limit switch 1 and the sleeve end cap 7 is provided with a through hole having a diameter which enables the end of the trigger block 3 remote from the limit switch 1 to pass, but which does not allow the flange 31 on the trigger block 3 to pass, thereby limiting the trigger block 3 in the second space. The sleeve end cover 7 can be detachably connected with the sleeve 2, for example, can be in a bolt connection mode, and the sleeve end cover 7 can be detached when the trigger block 3 and the elastic element 4 need to be overhauled.
As shown in fig. 2 and 3, in some examples of the embodiment of the present utility model, the sleeve 2 and the trigger block 3 are provided with rope holes through which the rope 30 passes, and the elastic protection member 5 is sleeved on the rope 30. In this way, the rope 30 can act as a guide when the trigger block 3 moves and when the elastic guard 5 is elastically deformed.
As shown in fig. 2-4, in some examples of embodiments of the present utility model, the limit guard 10 may further include a mounting base 6. The mounting seat 6 can be detachably connected with one end of the sleeve 2 far away from the trigger block 3, and the sleeve 4 is connected with the safety lock body 20 through the mounting seat 6. The mounting seat 6 is provided with a rope hole through which the rope 30 passes, and the rope 30 passes through the mounting seat 60, the trigger block 3 and the elastic protection member 5 in order after passing through the safety lock body 20.
On the other hand, the utility model also provides a safety lock. As shown in fig. 1, the safety lock includes a safety lock body 20 and a limit guard 10 according to any of the preceding embodiments. One end of the rope 30 may be provided with a hook 50 and a trigger 40, the hook 50 may be used to hang cargo or to mount an anchor point on a building for fixation. The trigger 40 may be a trigger plate for triggering the limit guard 10. The other end of the rope 30 passes through the limit guard 10 and the safety lock body 20, and the safety lock body 20 is mounted on the lifting apparatus.
In the process of running the lifting device, the rope 30 moves relative to the safety lock body 20, the safety lock body 20 can detect the moving speed of the rope 30 relative to the safety lock body 20, overspeed running of the lifting device is indicated when the moving speed of the rope 30 relative to the safety lock body 20 is too high, and at the moment, the safety lock body 20 can be locked on the rope 30 to stop running of the lifting device, and danger caused by overspeed running of the lifting device is prevented. The rope 30 may be a safety wire rope or a working wire rope, and is not particularly limited herein.
It should be noted that, the technical solutions in the embodiments of the present utility model may be combined with each other, but the basis of the combination is based on the fact that those skilled in the art can realize the combination; when the combination of the technical solutions contradicts or cannot be realized, it should be considered that the combination of the technical solutions does not exist, i.e. does not fall within the scope of protection of the present utility model.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. The limiting protection device is characterized in that the limiting protection device is connected with a safety lock body of lifting equipment, and a rope sequentially penetrates through the safety lock body and the limiting protection device;
the limit protection device comprises a limit switch, a sleeve, a trigger block and an elastic element, wherein:
the sleeve is provided with an inner cavity, the trigger block is limited in the inner cavity and is suitable for moving in the inner cavity, and the limit switch is arranged on the moving path of the trigger block;
one end of the elastic element is abutted with the sleeve, and the other end of the elastic element is abutted with the trigger block;
the trigger block is suitable for switching between a first position and a second position, a trigger piece on the rope props against the trigger block in the first position, so that the trigger block extrudes the elastic element to elastically deform, and the trigger block triggers the limit switch to act; in the second position, the elastic restoring force of the elastic element enables the trigger block to be far away from the limit switch.
2. The limit protection device according to claim 1, wherein the sleeve is provided with a step, the outer surface of the trigger block is provided with a flange, the elastic element is sleeved on the trigger block, one end of the elastic element is abutted against the step, and the other end of the elastic element is abutted against the flange;
the step divides the inner cavity into a first space and a second space, the limit switch is arranged in the first space, and the trigger block is arranged in the second space;
in the first position, the triggering block enters the first space towards one end of the step to trigger the limit switch to act; in the second position, the elastic restoring force of the elastic element pushes the trigger block to leave the first space.
3. The limit guard of claim 1, further comprising an elastomeric guard;
the rigidity of the elastic protection piece is higher than that of the elastic element, and one end of the elastic protection piece is abutted with one end of the trigger block, which is far away from the limit switch.
4. A limit protector according to claim 3 further comprising a trigger block end cap securing an end of the resilient guard to an end of the trigger block remote from the limit switch.
5. A limit protector according to claim 3 wherein the sleeve and the trigger block are provided with a rope hole through which the rope passes, the resilient guard being fitted over the rope.
6. The limit protector of claim 1, further comprising a mount, the mount being coupled to the safety lock, the sleeve being coupled to the mount.
7. A safety lock comprising a safety lock body and a limit protector according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321277357.5U CN219860476U (en) | 2023-05-24 | 2023-05-24 | Limiting protection device and safety lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321277357.5U CN219860476U (en) | 2023-05-24 | 2023-05-24 | Limiting protection device and safety lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219860476U true CN219860476U (en) | 2023-10-20 |
Family
ID=88322183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321277357.5U Active CN219860476U (en) | 2023-05-24 | 2023-05-24 | Limiting protection device and safety lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219860476U (en) |
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2023
- 2023-05-24 CN CN202321277357.5U patent/CN219860476U/en active Active
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