Anti-extrusion device for aerial work platform and aerial work platform

Abstract

An anti-extrusion device for an aerial work platform comprises a fixing piece, a pressing piece, a pressing piece and a pressing piece, the connecting piece is connected to the fixing piece in a sliding mode, the front end of the connecting piece is connected with the triggering piece so as to drive the triggering piece to move in the collision direction within the set stroke, the rear end of the connecting piece is connected with the induction piece, the induction piece is sleeved with a buffering piece, and the buffering piece is arranged between the connecting piece and the fixing piece in a compressible mode in the collision direction; the inductor is fixedly connected to the working platform, is located behind the induction piece, can be triggered by the induction piece when the trigger piece moves to the end point of the set stroke, and is used for sending a shutdown signal to the aerial work platform; the two fixing pieces and the two connecting pieces are symmetrically arranged on the two sides of the triggering piece. The device is simple in structure, convenient to install, durable, low in manufacturing cost and capable of guaranteeing the safety of high-altitude operation personnel in the working process in multiple directions, and personnel injuries are greatly reduced. The utility model further discloses an aerial work platform comprising the anti-extrusion device.

Description

Technical Field

[0001] The utility model relates to the technical field of working equipment, in particular to an anti - extrusion device for an aerial work platform, and also relates to an aerial work platform including the above - mentioned anti - extrusion device for an aerial work platform. Background Art

[0002] The working environment of an aerial work platform is complex. The operator usually stands in the working platform facing the operating console. When the articulated boom or straight - boom aerial work platform is lifted or lowered, the direction in which the boom extends is usually the direction away from the operator. It is not easy to accurately judge the distance between the staff on the working platform and the obstacles, and it is easy to squeeze the staff, resulting in casualties and other situations. Therefore, it is necessary to make a special safety protection device to ensure the personal safety of the operator.

[0003] At present, the existing anti - extrusion devices for aerial work platforms still have the following deficiencies: (1) The transmission structure is complex and cumbersome, which is not convenient for later inspection and maintenance; (2) The signal reception sensitivity is too low, and the reaction actions are different when touched at different angles; (3) The cost is relatively high, and the structure is complex and easy to be damaged. Summary of the Utility Model

[0004] Aiming at the problems and deficiencies existing in the prior art, the first object of the utility model is to provide an anti - extrusion device for an aerial work platform, which is used to trigger the automatic protection mechanism of the machine when a person is squeezed by an obstacle during aerial work, so that the equipment stops all current actions, thereby preventing more serious injuries to the operating personnel. The second object of the utility model is to provide an aerial work platform including the above - mentioned anti - extrusion device for an aerial work platform.

[0005] The technical solution of the utility model is as follows:

[0006] An anti - extrusion device for an aerial work platform, comprising:

[0007] A fixing member, fixed on the working platform and located on the side of the operating console;

[0008] A connecting member, slidably connected to the fixing member, with its front end connected to a triggering member so as to be able to drive the triggering member to move along the collision direction within a set stroke, and the rear end connected to a sensing member. A buffer member is sleeved outside the sensing member, and the buffer member is compressibly arranged between the connecting member and the fixing member along the collision direction;

[0009] An inductor, fixedly connected to the working platform and located behind the sensing member, which can be triggered by the sensing member when the triggering member moves to the end of the set stroke, and is used to send a shutdown signal to the aerial work platform;

[0010] Two fixing members and two connecting members are symmetrically arranged on both sides of the triggering member.

[0011] According to a specific embodiment, the fixing member is a slide rail, the connecting member is a slider, and the slider is slidably connected to the slide rail. Specifically, the slide rail is a U-shaped slide rail with an outward opening, the slider is arranged inside the slide rail, and its upper and lower end faces cooperate with the slide rail. A guiding hole is provided on the bottom surface of the slide rail, and the triggering member passes through the guiding hole and is detachably connected to the slider. Specifically, the guiding hole is a long hole, and its extending direction is the same as the moving direction of the slider, both along the collision direction of the triggering member. The sensing member is a rod-shaped structure, one end of which is fixedly connected to the slider, and the other end extends outside the fixing member in parallel with the slide rail. The buffer member is a compression spring, which is sleeved outside the sensing member, and one end abuts against the rear end of the slider, and the other end abuts against the rear part of the slide rail.

[0012] According to a specific embodiment, the triggering member is a cross bar, and both ends thereof pass through the guiding hole and are connected to the slider. Specifically, a cross bar with a circular or ring-shaped cross section can be used to reduce the harm to the operator caused by sharp corners.

[0013] The inductor is a travel switch. An induction head cooperating with the detection arm of the travel switch is provided at the end of the sensing member, and the width of the induction head is greater than the thickness of the detection arm. To improve safety, in case the inductor fails, a backup inductor is provided, that is, two sensing members and two inductors are provided respectively, and they are symmetrically arranged on both sides of the triggering member.

[0014] An aerial work platform includes a working platform and an operating platform arranged on its front side, and also includes the anti-pinch device for the aerial work platform as described above. The fixing member of the anti-pinch device for the aerial work platform is fixed on the working platform and is located on the left and right sides of the operating platform. After the inductor of the anti-pinch device for the aerial work platform sends a shutdown signal to the aerial work platform, it can drive the aerial work platform to shut down.

[0015] The beneficial effects of the present utility model are as follows:

[0016] (1) By means of contact triggering, the operation of the whole machine is stopped, which can comprehensively ensure the safety of aerial work operators during work, improve the perfection of functions in the aerial work industry, and greatly reduce personnel injuries.

[0017] (2) The structure principle of the present invention is simple, convenient for installation and durable, with low use cost, and the automatic reset mechanism is convenient and simple. The present invention adopts a double-receiving inductor structure on both sides, and the triggering reaction at different angles is more sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic three-dimensional structure diagram of a specific embodiment;

[0019] Figure 2 It is a schematic installation position diagram of the anti-pinch device for the aerial work platform;

[0020] 10. Working platform; 20. Operating platform; 1. Fixing member; 2. Connecting member; 3. Sensing member; 31. Sensing head; 4. Buffer member; 5. Inductor; 6. Trigger member. Detailed implementation manner

[0021] The following will further elaborate on the technical means adopted to achieve the predetermined invention purpose of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0022] See Figure 1 and Figure 2 as shown, where Figure 1 is a three-dimensional structural schematic diagram of the anti-pinch device in a specific embodiment; Figure 2 is a schematic diagram of the installation position of the anti-pinch device for an aerial work platform.

[0023] An anti-pinch device for an aerial work platform includes:

[0024] Fixing member 1, fixed on the working platform 10 and located on the side of the operating platform 20;

[0025] Connecting member 2, slidably connected to the fixing member 1, with its front end connected to the trigger member 6 so as to be able to drive the trigger member 6 to move along the collision direction within a set stroke, and the rear end connected to the sensing member 3. A buffer member 4 is sleeved outside the sensing member 3, and the buffer member 4 is compressibly arranged between the connecting member 2 and the fixing member 1 along the collision direction;

[0026] Inductor 5, fixedly connected to the working platform 10 and located behind the sensing member 3, capable of being triggered by the sensing member 3 when the trigger member 6 moves to the end of the set stroke, and used to send a shutdown signal to the aerial work platform;

[0027] Two fixing members 1 and two connecting members 2 are symmetrically arranged on both sides of the trigger member 6.

[0028] See Figure 1 as shown. The fixing member 1 is a slide rail, and the connecting member 2 is a slider. The slider is slidably connected to the slide rail. Specifically, the slide rail is a U-shaped slide rail with an opening to the outside. The slider is arranged inside the slide rail, and its upper and lower end faces cooperate with the slide rail. The slide rail is detachably connected to the working platform 10 through a pressing plate and bolts or screws, and the bottom surface faces the operating platform 20, and the opening side faces away from the operating platform 20. For the convenience of the trigger member 6, a guiding hole is provided on the bottom surface of the slide rail, and the trigger member 6 passes through the guiding hole and is detachably connected to the slider. Specifically, the guiding hole is a long hole, and the extending direction is the same as the moving direction of the slider, both along the collision direction of the trigger member 6. The sensing member 3 is a rod-shaped structure, one end of which is fixedly connected to the slider, and the other end extends parallel to the slide rail outside the fixing member 1. The buffer member 4 is a compression spring, sleeved outside the sensing member 3, and one end abuts against the rear end of the slider, and the other end abuts against the rear part of the slide rail.

[0029] According to a specific embodiment, the trigger 6 is a cross bar, and both ends thereof pass through the guiding holes and are connected to the sliders respectively. A cross bar with a circular or ring-shaped cross section can be specifically adopted to reduce the harm to the operator caused by sharp corners.

[0030] The inductor 5 is a travel switch. An induction head 31 that cooperates with the detection arm of the travel switch is provided at the end of the induction member 3, and the width of the induction head 31 is greater than the thickness of the detection arm. To improve safety, in case the inductor 5 fails, a backup inductor 5 is provided, that is, two induction members 3 and two inductors 5 are provided and symmetrically arranged on both sides of the trigger 6.

[0031] When the operator is squeezed by an obstacle, the body will come into contact with the trigger 6. The trigger 6 advances forward in the slide rail through the sliders connected to both ends. After the advancement, the induction head 31 at the end of the slider touches the contact of the inductor 5. After the action, a shutdown signal is sent to stop the current operation of the whole machine. The current operation includes all operations of the whole machine (traveling, lifting, etc.). After being triggered, the operator needs to confirm safety and then manually press the button to release the switch of the machine before the machine can be operated again. When the person leaves the trigger 6, the mechanism compresses the spring inside the slide rail to automatically restore the trigger 6 to the initial position.

[0032] An aerial work platform includes a working platform 10 and an operating platform 20 provided on the front side thereof, and further includes the anti-squeezing device for the aerial work platform as described above. The fixing member 1 of the anti-squeezing device for the aerial work platform is fixed on the working platform 10 and is located on the left and right sides of the operating platform 20. The inductor 5 of the anti-squeezing device for the aerial work platform can drive the aerial work platform to stop after sending a shutdown signal to the aerial work platform.

[0033] The above is the preferred embodiment of the present invention. However, the present invention is not limited to the above embodiments and examples. Various changes, equivalent replacements, improvements, etc. made within the knowledge scope of those skilled in the art without departing from the inventive concept of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-extrusion device for an aerial work platform, characterized in that: include: A fixing member (1), fixed on the working platform and located on the side of the operating table; A connecting member (2) is slidably connected to the fixing member (1), a front end of which is connected to a trigger member (6) so as to drive the trigger member (6) to move along a collision direction within a set stroke, and a rear end of which is connected to a sensing member (3), a buffer member (4) is sleeved on the outside of the sensing member, and the buffer member is compressibly arranged between the connecting member (2) and the fixing member (1) along the collision direction; A sensor (5) is fixedly connected to the working platform and is located behind the sensing member (3). When the trigger member (6) moves to a set travel end point, it can be triggered by the sensing member (3) and is used to send a stop signal to the aerial work platform; Two of the fixing members (1) and two of the connecting members (2) are symmetrically arranged on both sides of the trigger member (6).

2. The anti-extrusion device for aerial work platforms according to claim 1, characterized in that: The fixing member (1) is a slide rail, the connecting member (2) is a slider, and the slider is slidably connected to the slide rail.

3. The anti-extrusion device for aerial work platforms according to claim 2, characterized in that: The slide rail is a U-shaped slide rail opened outward, the slider is arranged inside the slide rail, and the upper and lower end surfaces thereof are matched with the slide rail.

4. The anti-extrusion device for aerial work platforms according to claim 3, characterized in that: A guide hole is provided on the bottom surface of the slide rail, and the trigger member (6) passes through the guide hole and is detachably connected to the slide block.

5. The anti-extrusion device for aerial work platforms according to claim 4, characterized in that: The sensing element (3) is a rod-shaped structure, one end of which is fixedly connected to the sliding block, and the other end of which extends parallel to the sliding rail to the outside of the fixing element (1).

6. The anti-extrusion device for aerial work platforms according to claim 5, characterized in that: The buffer component (4) is a compression spring, which is sleeved outside the sensing component (3), and has one end abutting against the rear end of the slider, and the other end abutting against the rear part of the slide rail.

7. The anti-extrusion device for aerial work platforms according to any one of claims 1 to 6, characterized in that: The trigger member (6) is a cross bar, both ends of which pass through guide holes and are connected to the slide block.

8. The anti-extrusion device for aerial work platforms according to claim 7, characterized in that: The sensor (5) is a travel switch, and the end of the sensor (3) is provided with a sensor head (31) that cooperates with the detection arm of the travel switch, and the width of the sensor head is greater than the thickness of the detection arm.

9. The anti-extrusion device for aerial work platforms according to claim 8, characterized in that: The induction element and the sensor are each provided with two pieces, which are symmetrically arranged on both sides of the trigger element.

10. An aerial work platform, comprising a working platform and an operating table arranged at the front side thereof, characterized in that: It also includes an aerial work platform anti-extrusion device as described in any one of claims 1 to 9, wherein the fixing part (1) of the aerial work platform anti-extrusion device is fixed on the work platform and is located on the left and right sides of the operating table, and the sensor (5) of the aerial work platform anti-extrusion device can drive the aerial work platform to stop after sending a stop signal to the aerial work platform.

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