Anti-collision device for lifting work platform and lifting work platform

Abstract

This utility model discloses an anti-collision device for a lifting work platform and the lifting work platform itself. The anti-collision device includes a guide sleeve, an anti-collision rod, a bracket, and a limit switch. The guide sleeve is hollow and forms a movable channel. A mounting seat is provided on the guide sleeve. The anti-collision rod is sleeved inside the guide sleeve and moves along its length within the guide sleeve. The bracket is rotatably mounted on the top of the anti-collision rod, and the limit switch is mounted on the bracket. This utility model is applicable to work platforms of various models; it is easy to install and highly flexible; the height of the anti-collision rod can be adjusted according to the height of the operator, with a long fully extended height and a fully retracted height almost the same as the platform guardrail, without affecting the overall vehicle's retracted height. In spaces with limited height, the anti-collision rod can be used for smooth entry and exit without disassembling it.

Description

Technical Field

[0001] This utility model relates to the technical field of aerial work equipment, and in particular to an anti-collision device for a lifting work platform and a lifting work platform. Background Technology

[0002] A lifting work platform is a specialized piece of equipment that provides functions such as high-altitude work, equipment installation, and dismantling. It typically consists of a metal structure, a working arm, a work platform, and a control system. Lifting work platforms are characterized by their compact structure, ease of operation, and safety and reliability. They can operate at different heights and in various environments and are widely used in construction, power, petroleum, and chemical industries.

[0003] During the ascent of a lifting work platform, accidents may occur due to factors such as excessively rapid ascent or improper operation, which could cause workers on the platform to be hit on the head by obstacles. Existing lifting work platforms generally adopt anti-collision measures by installing anti-collision bars on the platform to achieve the anti-collision effect. However, the structure and function of the anti-collision bars used are relatively simple. They can only achieve the telescopic function or the folding function, and cannot adjust the height according to the height difference of the workers, which can easily lead to head injuries to the operators.

[0004] CN112744761A discloses a foldable anti-collision device suitable for aerial work platforms. The device includes a pressure control component, which is foldably mounted above the work platform. This component detects obstacles and controls the movement of the aerial work platform. However, this pressure control component is foldably mounted on the work platform via a connecting rod, allowing only folding functionality and not height adjustment based on worker height, potentially leading to head injuries.

[0005] CN222665345U discloses an anti-collision device for aerial work platforms. The device includes a telescopic rod and a limit switch. The telescopic rod is disposed within a mounting base, is arranged along a first direction, and moves along that direction. A pressure plate is provided on the telescopic rod, protruding from the outer surface of the telescopic rod and perpendicular to it. The limit switch is located outside the mounting base, below the pressure plate, and has a contact surface that contacts the pressure plate. The limit switch of this device detects the pressure plate on the telescopic rod but cannot detect obstacles above the operator's head on the aerial work platform. Summary of the Invention

[0006] To address the shortcomings of the existing technology, this utility model proposes a foldable anti-collision device and a lifting work platform with adjustable anti-collision bar height based on the height of the operator.

[0007] The technical solution adopted in this utility model is: an anti-collision device for a lifting work platform, comprising:

[0008] The guide sleeve is hollow inside and forms a movable channel. The guide sleeve is provided with a mounting base for fixing it to the lifting work platform.

[0009] A crash bar, wherein the crash bar is sleeved inside the guide sleeve, and the crash bar can move along the length direction of the crash bar within the guide sleeve;

[0010] A bracket, which is rotatably mounted on the top of the anti-collision bar;

[0011] Limit switch, which is mounted on the bracket.

[0012] During operation, this utility model utilizes the anti-collision bar to move within the guide sleeve, achieving a telescopic function as needed. A limit switch is installed on the bracket, which can rotate around the anti-collision bar to achieve a folding function, thereby adjusting the height of the anti-collision bar according to the height of the operator.

[0013] In one embodiment, the bracket is bolted to the crash bar, and the bracket rotates relative to the crash bar about the bolt as a rotation axis.

[0014] In one embodiment, a safety pin is provided between the bracket and the anti-collision bar to prevent the bracket from tipping over. The safety pin, in conjunction with the bolt, limits the bracket and prevents it from tipping over when upright. After the safety pin is removed, the bracket can rotate around the bolt, achieving a folding function.

[0015] Preferably, the safety pin is a safety pin with a steel wire rope, which can prevent the pin from falling and causing safety hazards. The safety pin with the steel wire rope also allows the operator to quickly pull out the pin without worrying about losing it, saving time.

[0016] In one embodiment, the guide sleeve is provided with two locking bolts, which are used to fix the relative position of the anti-collision bar and the guide sleeve. After the anti-collision bar is extended or retracted to a suitable position according to the working requirements, it is fixed in place by the locking bolts to prevent the anti-collision bar from moving.

[0017] In one embodiment, the bottom of the anti-collision bar is provided with an anti-detachment mechanism.

[0018] In one embodiment, the anti-collision bar is provided with a wire passage hole. The anti-collision bar has a hollow structure, and the wiring harness of the limit switch passes through the inside of the anti-collision bar, exits from the wire passage hole on the anti-collision bar, and connects to the controller.

[0019] In one embodiment, a controller is also included, and the limit switch is connected to the controller. The limit switch is used to detect obstacles above the lifting platform. After detecting an obstacle, it sends a signal to the controller to control the lifting platform to stop rising.

[0020] Based on the same inventive concept, this utility model also provides a lifting work platform, which includes a platform guardrail and an anti-collision device installed on the platform guardrail. The platform guardrail is arranged around the lifting work platform, and the guide sleeve is fixed to the platform guardrail by the mounting base.

[0021] In one embodiment, the mounting base includes a first side plate, a second side plate, a top plate, and connecting bolts. The first side plate and the second side plate are arranged in parallel, and the connecting bolts pass through the first side plate and the second side plate. The first side plate is fixed to the guide sleeve, and the top plate is fixed to the top of the first side plate and the second side plate. The platform guardrail is snapped into the space formed by the first side plate, the second side plate, and the top plate and fixed by the connecting bolts.

[0022] In one embodiment, the length of the crash bar is the same as the installation height of the platform guardrail. The fully retracted height of the crash bar is almost the same as the height of the guardrail, which does not affect the retracted height of the vehicle. In spaces with limited height, the crash bar can be used to enter and exit smoothly without disassembling it.

[0023] This utility model has a wide range of applications and is suitable for the work platforms of various models; it is easy to install and highly flexible; the height of the anti-collision bar can be adjusted according to the height of the operator, and the fully extended height is relatively long, while the fully retracted height is almost the same as the guardrail, without affecting the overall vehicle height. In spaces with limited height, it can be easily entered and exited without disassembling the anti-collision bar. In addition, this utility model can achieve the folding function simply by inserting and removing the safety pin, and the structure is simple. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the fully extended anti-collision device according to an embodiment of the present utility model;

[0025] Figure 2 This is a fully scaled-down schematic diagram of the anti-collision device according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the folding anti-collision device according to an embodiment of the present invention;

[0027] Figure 4 This is a front view of the anti-collision device according to an embodiment of the present utility model;

[0028] Figure 5 This is a side view of the anti-collision device according to an embodiment of the present utility model;

[0029] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0030] Figure 7 This is a schematic diagram of the anti-collision device of this utility model extending from the lifting work platform;

[0031] Figure 8 This is a schematic diagram of the anti-collision device of this utility model retracting and folding on the lifting work platform;

[0032] Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point B.

[0033] In the diagram, 1. guide sleeve, 2. mounting base, 3. anti-collision bar, 4. bracket, 5. limit switch, 6. bolt, 7. safety pin, 8. butterfly locking bolt, 9. limit rod, 10. cable hole, 11. lifting work platform, 12. platform guardrail, 201. first side plate, 202. second side plate, 203. top plate, 204. connecting bolt. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figures 1 to 5 As shown, this embodiment discloses an anti-collision device for a lifting work platform, including a guide sleeve 1, a mounting base 2, an anti-collision rod 3, a bracket 4, and a limit switch 5. The guide sleeve 1 is hollow inside and forms a movable channel. The anti-collision rod 3 is sleeved inside the guide sleeve 1 and moves along the length direction of the anti-collision rod 3 inside the guide sleeve 1. The limit switch 5 is installed on the bracket 4.

[0037] In this embodiment, the bracket 4 is connected to the anti-collision bar 3 by bolts 6. The bracket 4 rotates relative to the anti-collision bar 3 with the bolts 6 as the rotation axis. The bracket 4 rotates around the anti-collision bar 3 to realize the folding function, which can effectively reduce the total height of the anti-collision device.

[0038] like Figure 2 , Figure 3 As shown in this embodiment, a safety pin 7 with a steel wire rope is provided between the bracket 4 and the anti-collision rod 3. The safety pin 7, in conjunction with the bolt 6, can limit the bracket 4, preventing it from tipping over after being erected. After the safety pin 7 is pulled out, the bracket 4 can rotate around the bolt 6, achieving a folding function. In particular, the safety pin 7 with a steel wire rope can prevent the pin from falling off and causing safety hazards. The safety pin 7 with a steel wire rope also allows the operator to quickly pull out the pin without worrying about losing it, saving time.

[0039] Specifically, when the safety pin 7 is disassembled, the bracket 4 rotates relative to the anti-collision bar 3 to form a folded state. When the bracket 4 and the anti-collision bar 3 are collinear, the safety pin 7 is inserted into the bracket 4, so that the bracket 4 and the anti-collision bar 3 remain in an extended state. The bracket 4 is provided with a through hole for the safety pin 7 to be inserted.

[0040] In this embodiment, the guide sleeve 1 is provided with a butterfly locking bolt 8, which is used to fix the relative position of the anti-collision rod 3 and the guide sleeve 1. After the anti-collision rod 3 is extended or retracted to a suitable position according to the working requirements, it is fixed by the butterfly locking bolt 8 to prevent the anti-collision rod 3 from moving.

[0041] In this embodiment, the bottom of the anti-collision rod 3 is provided with a limiting rod 9 that passes through it. The limiting end of the limiting rod 9 extends out of the anti-collision rod 3, and the length of the limiting rod 9 extending out of the anti-collision rod 3 is greater than the gap between the anti-collision rod 3 and the guide sleeve 1. The limiting rod 9 can control the maximum extension length of the anti-collision rod 3 and can play a blocking role to prevent the anti-collision rod 3 from detaching from the guide sleeve 1.

[0042] In this embodiment, the anti-collision bar 3 is provided with a wire hole 10. The anti-collision bar 3 is a hollow structure. The wire harness of the limit switch 5 passes through the inside of the anti-collision bar 3, exits from the wire hole 10 on the anti-collision bar 3, and is connected to the controller (not shown in the figure). The limit switch 5 is used to detect obstacles above the lifting work platform 11. After detecting an obstacle, it sends a signal to the controller to control the lifting work platform 11 to stop rising.

[0043] like Figures 6-9 As shown, a lifting work platform 11 includes a platform guardrail 12, which is arranged around the lifting work platform 11. The guide sleeve 1 is fixed to the platform guardrail 12 by the mounting base 2.

[0044] In this embodiment, the mounting base 2 includes a first side plate 201, a second side plate 202, a top plate 203, and a connecting bolt 204. The first side plate 201 and the second side plate 202 are arranged in parallel. The connecting bolt 204 passes through the first side plate 201 and the second side plate 202. The first side plate 201 is fixed on the guide sleeve 1. The top plate 203 is fixed to the top of the first side plate 201 and the second side plate 202. The platform guardrail 12 is snapped into the space formed by the first side plate 201, the second side plate 202, and the top plate 203 and fixed by the connecting bolt 204. The platform guardrail ring 12 is arranged around the lifting work platform 11. The height of the anti-collision bar 3 is almost the same as the setting height of the platform guardrail 12, so it does not affect the retraction height of the whole vehicle.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A collision avoidance device for a lifting work platform, characterized in that, include: Guide sleeve (1), the guide sleeve (1) is hollow inside and forms a movable channel, and the guide sleeve (1) is provided with a mounting seat (2) for fixing on the lifting work platform (11). The anti-collision rod (3) is sleeved inside the guide sleeve (1) and can move along the length direction of the anti-collision rod (3) inside the guide sleeve (1). A bracket (4) is rotatably mounted on the top of the anti-collision bar (3); Limit switch (5), which is mounted on bracket (4).

2. The anti-collision device for a lifting work platform according to claim 1, characterized in that: The bracket (4) is connected to the anti-collision bar (3) by bolts (6), and the bracket (4) rotates relative to the anti-collision bar (3) with the bolts (6) as the rotation axis.

3. The anti-collision device for a lifting work platform according to claim 1 or 2, characterized in that: A safety pin (7) is provided between the bracket (4) and the anti-collision bar (3) to prevent the bracket from overturning. When the safety pin (7) is removed, the bracket (4) rotates relative to the anti-collision bar (3) to form a folded state. When the bracket (4) and the anti-collision bar (3) are collinear, the safety pin (7) is inserted into the bracket (4) so ​​that the bracket (4) and the anti-collision bar (3) remain in an extended state.

4. The anti-collision device for a lifting work platform according to claim 1, characterized in that: The guide sleeve (1) is provided with two locking bolts (8), which fix the relative position of the anti-collision rod (3) and the guide sleeve (1).

5. The anti-collision device for a lifting work platform according to claim 1, characterized in that: The bottom of the anti-collision bar (3) is provided with an anti-detachment mechanism.

6. The anti-collision device for a lifting work platform according to claim 1, characterized in that: The anti-collision bar (3) is a hollow bar, and the anti-collision bar (3) is provided with a wire hole (10).

7. The anti-collision device for a lifting work platform according to claim 1, characterized in that: It also includes a controller, to which the limit switch (5) is connected.

8. A lifting work platform, characterized in that: The platform includes a platform guardrail (12) and an anti-collision device for lifting a work platform as described in any one of claims 1-7 mounted on the platform guardrail (12), wherein the platform guardrail (12) is arranged around the lifting work platform (11), and the guide sleeve (1) is fixed to the platform guardrail (12) by the mounting base (2).

9. The lifting work platform according to claim 8, characterized in that: The mounting base (2) includes a first side plate (201), a second side plate (202), a top plate (203), and a connecting bolt (204). The first side plate (201) and the second side plate (202) are arranged in parallel. The connecting bolt (204) passes through the first side plate (201) and the second side plate (202). The first side plate (201) is fixed on the guide sleeve (1). The top plate (203) is fixed at the top of the first side plate (201) and the second side plate (202). The platform guardrail (12) is snapped into the space formed by the first side plate (201), the second side plate (202), and the top plate (203) and fixed by the connecting bolt (204).

10. The lifting work platform according to claim 8, characterized in that: The length of the anti-collision bar (3) is the same as the height of the platform guardrail (12).

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