Supporting structure applied to scissor type overhead working truck and overhead working truck

Abstract

The supporting structure comprises a lifting frame body and a supporting assembly, the lifting frame body comprises a first inner fork frame and a second inner fork frame, and the two ends of the top of the first inner fork frame are hinged to the two ends of the bottom of the second inner fork frame respectively; the supporting assembly comprises a first supporting beam, a second supporting beam and a supporting arm, the first supporting beam is arranged in the first inner fork frame, the second supporting beam is arranged in the second inner fork frame, and the supporting arm is arranged between the first supporting beam and the second supporting beam; the supporting arm is hinged to the first supporting beam, a U-shaped limiting piece is arranged at the end, close to the second supporting beam, of the supporting arm, and the second supporting beam is clamped in the U-shaped limiting piece. The device can be operated by a single person, and the operation steps are simple; and stable supporting of the lifting frame body can be achieved through the supporting frame, the lifting reliability is improved, and harm to operators is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work platforms, in particular to a support structure applied to a scissor-type aerial work vehicle and the aerial work vehicle. Background Art

[0002] The scissor lift has a strong load-bearing capacity and a large working area. Its unique electric drive design effectively provides longer working time than any other similar product on the market. It operates smoothly and has a fast platform lifting speed.

[0003] Scissor lifts require frequent maintenance of their forks, which require support arms to be raised to a certain height. In existing scissor lifts, after the forks are raised to a certain height, one worker lifts the arm and holds it upright, while another worker operates the controller to slowly lower the forks. Once the forks rest on the arm, the worker releases the arm to disconnect power and pressure for maintenance.

[0004] The above operation requires the cooperation of two workers and cannot be completed by one person, which is very troublesome. Moreover, if the hydraulic cylinder fails during operation, causing the fork frame to drop rapidly, it may result in the worker's arm being crushed. Therefore, the existing structure has a considerable degree of safety risks. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that the support arm of the aerial work vehicle has complicated operation steps and is prone to potential safety hazards.

[0006] In order to solve the above technical problems, the utility model provides a support structure for a scissor-type aerial work vehicle, comprising:

[0007] A lifting frame body, the lifting frame body comprising a first inner fork frame and a second inner fork frame, wherein two ends of a top of the first inner fork frame are hingedly connected to two ends of a bottom of the second inner fork frame;

[0008] A support assembly, the support assembly includes a first support beam, a second support beam and a support arm, the first support beam is arranged inside the first inner fork frame, the second support beam is arranged inside the second inner fork frame, and the support arm is arranged between the first support beam and the second support beam; the support arm and the first support beam are hinged to each other, and a U-shaped limit piece is provided at one end of the support arm close to the second support beam, and the second support beam is clamped in the U-shaped limit piece.

[0009] In one embodiment of the present invention, an L-shaped clip is provided at one end of the support arm connected to the first support beam, one side of the L-shaped clip is connected to the support arm, and the other side of the L-shaped clip is hinged to the first support beam, and the support arm is rotated so that the clip of the L-shaped clip fits into the first support beam.

[0010] In one embodiment of the present invention, a pair of ear plates are provided on the surface of the first support beam, a support tube is provided on the surface of the L-shaped clamp, both ends of the support tube are clamped between the two ear plates, and the ear plates and the support tube are connected by a pin shaft.

[0011] In one embodiment of the present invention, an adjustment hole is opened on the surface of the ear plate, and the pin shaft is inserted into the adjustment hole and the support tube.

[0012] In one embodiment of the present invention, the U-shaped limiting member includes a first limiting surface and a second limiting surface, and the bending angle of one side of the first limiting surface is greater than the bending angle of one side of the second limiting surface.

[0013] In one embodiment of the present invention, the length of the first limiting surface is smaller than the length of the second limiting surface.

[0014] In one embodiment of the present invention, an anti-wear pad is provided on one side of the second limiting surface, and the anti-wear pad is detachably connected to the second limiting surface.

[0015] In one embodiment of the present invention, a guiding slope is provided on the side where the anti-wear pad abuts against the second support beam.

[0016] In one embodiment of the present invention, a handle is provided on the support arm.

[0017] An aerial work vehicle comprises the support structure applied to a scissor-type aerial work vehicle.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The support structure and aerial work vehicle applied to a scissor-type aerial work vehicle described in the utility model can be operated by one person with simple operation steps; the support frame can achieve stable support for the lifting frame body, improve the reliability of lifting, and avoid harm to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0021] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 for Figure 1 A cross-sectional view of the internal structure;

[0023] Figure 3 for Figure 2 A magnified view of the local structure at point A;

[0024] Figure 4 for Figure 1 Axonometric view of the center support assembly;

[0025] Figure 5 for Figure 1 Main view of the middle support assembly;

[0026] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Lifting frame body; 2. Support assembly; 3. Handle; 11. First inner fork frame; 12. Second inner fork frame; 21. First support beam; 22. Second support beam; 23. Support arm; 24. U-shaped limiter; 25. L-shaped clip; 26. Support tube; 27. Ear plate; 28. Pin; 29. Anti-wear pad; 241. First limit surface; 242. Second limit surface; 271. Adjustment hole. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0028] Example 1

[0029] Reference Figure 1-Figure 5 As shown, the utility model discloses a support structure for a scissor-type aerial work vehicle, comprising:

[0030] A lifting frame body 1, comprising a first inner fork frame 11 and a second inner fork frame 12, wherein two ends of the top of the first inner fork frame 11 are hingedly connected to two ends of the bottom of the second inner fork frame 12;

[0031] The support assembly 2 includes a first support beam 21, a second support beam 22 and a support arm 23. The first support beam 21 is arranged inside the first inner fork frame 11, the second support beam 22 is arranged inside the second inner fork frame 12, and the support arm 23 is arranged between the first support beam 21 and the second support beam 22; the support arm 23 is hinged to the first support beam 21, and a U-shaped limiter 24 is provided at one end of the support arm 23 close to the second support beam 22, and the second support beam 22 is clamped in the U-shaped limiter 24.

[0032] As can be seen, the support structure of the present invention is applied to the lifting assembly of a scissor-type aerial work platform, primarily to support the entire lifting assembly during maintenance and facilitate circuit and pressure testing. Specifically, the lifting frame body 1 includes a first inner fork frame 11 and a second inner fork frame 12, wherein the first inner fork frame 11 is located at the bottom of the entire lifting frame body 1, and the second inner fork frame 12 is located at the top of the first inner fork frame 11. In fact, the lifting frame body 1 includes multiple inner fork frames, with any two adjacent inner fork frames hinged to each other, and the multiple inner fork frames can be extended and retracted to achieve lifting. One end of the support arm 23 is hinged to the first support beam 21 provided on the first inner fork frame 11, and the other end abuts the second support beam 22 provided on the second inner fork frame 12. During actual operation, after the lifting frame is lifted to a certain height, the worker pulls up the support arm 23, and then operates the lifting frame to slowly descend. The support arm 23 will also rotate as the angle of the lifting frame changes, and the second support beam 22 on the second inner fork frame 12 will slowly be stuck into the U-shaped limiter 24 on the top plate of the support arm 23 until the lifting frame is firmly supported.

[0033] The utility model can be operated by one person, and the operation steps are simple; the support frame can achieve stable support of the lifting frame body 1, improve the reliability of lifting, and avoid harm to the operator.

[0034] Furthermore, an L-shaped clip 25 is provided at one end of the support arm 23 connected to the first support beam 21, one side of the L-shaped clip 25 is connected to the support arm 23, and the other side of the L-shaped clip 25 is hinged to the first support beam 21. The support arm 23 is rotated so that the snap-on of the L-shaped clip 25 fits with the first support beam 21.

[0035] Specifically, the first support beam 21 and the second support beam 22 are both rectangular beams. During operation, the support arm is rotated so that the latch of the L-shaped clip 25 is just stuck on the first support beam 21; as a preferred solution of the present invention, a pair of ear plates 27 are provided on the surface of the first support beam 21, and a support tube 26 is provided on the surface of the L-shaped clip 25. The two ends of the support tube 26 are clamped between the two ear plates 27, and the ear plate 27 and the support tube 26 are connected by a pin shaft 28.

[0036] Specifically, the two ends of the support tube 26 are clamped between the two ear plates 27, and then the pin 28 is sequentially passed through the ear plates 27 and the support tube 26 to achieve the rotation of the support tube 26 around the pin 28. As a preferred embodiment of the present invention, the pin 28 is a bolt, and by tightening the bolt, the damping of the rotation of the support arm 23 is adjusted.

[0037] Furthermore, an adjustment hole 271 is opened on the surface of the ear plate 27 , and the pin 28 is passed through the adjustment hole 271 and the support tube 26 .

[0038] Specifically, due to errors in the manufacturing process of various parts, the L-shaped clamp 25 at the bottom of the support arm 23 may not fully align with the first support beam 21, and the entire weight of the lifting frame will be applied entirely to the pin 28. The provision of the aforementioned adjustment hole 271 allows the pin 28 to move slightly up and down within the adjustment hole 271, adjusting the L-shaped clamp 25 to fully align with the first support beam 21, so that the weight of the entire lifting frame is applied to the first support beam 21, and the pin 28 is only affected by the weight of the support arm 23 itself.

[0039] Furthermore, the U-shaped limiting member 24 includes a first limiting surface 241 and a second limiting surface 242 , wherein the bending angle of the first limiting surface 241 is greater than that of the second limiting surface 242 .

[0040] As a preferred solution of the present invention, the bending angle of the first limiting surface 241 is 135°, and the bending angle of the second limiting surface 242 is 90°. Specifically, when the second support beam 22 falls into the U-shaped limiting piece 24, the opening of the first limiting surface 241 is larger, which can ensure that the support arm 23 does not interfere with the second support beam 22 when it rotates as the lifting frame body 1 descends. The long side can ensure that the second support beam 22 does not detach from the U-shaped limiting piece 24 at the top of the support arm 23.

[0041] Furthermore, an anti-wear pad 29 is provided on one side of the second limiting surface 242, and the anti-wear pad 29 is detachably connected to the second limiting surface 242. A guide slope is provided on the side of the anti-wear pad 29 that contacts the second support beam 22.

[0042] Specifically, the anti-wear pad 29 can cushion the pressure when the lifting frame body 1 is retracted. Secondly, the anti-wear pad 29 can also prevent wear caused by direct contact between the U-shaped limiter 24 and the second support beam 22. As a preferred embodiment of the present invention, the anti-wear pad 29 is detachably connected to the second limiter surface 242, allowing for replacement of severely worn anti-wear pads 29.

[0043] Furthermore, a handle 3 is provided on the support arm 23 . Specifically, the handle 3 is provided on the side wall of the entire support arm 23 , so that the operator can easily pull up the support arm 23 .

[0044] Example 2

[0045] An aerial work vehicle comprises the support structure applied to a scissor-type aerial work vehicle described in the first embodiment.

[0046] A support structure and aerial work platform for a scissor-type aerial work platform. The specific operating steps are as follows: First, the lifting frame is raised to a certain height. A worker pulls up the support arm 23 between the first inner fork frame 11 and the second inner fork frame 12. The worker then slowly lowers the lifting frame. The support arm 23 rotates as the lifting frame angle changes. The second support beam 22 on the second inner fork frame 12 slowly engages the U-shaped limiter 24 on the top plate of the support arm 23 until the lifting frame is firmly supported. The utility model can be operated by one person and has simple operating steps. The support frame can achieve stable support for the lifting frame body 1, improve the reliability of the lifting, and avoid harm to the operator.

[0047] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A support structure for a scissor-type aerial work vehicle, characterized in that: include: A lifting frame body, the lifting frame body comprising a first inner fork frame and a second inner fork frame, wherein two ends of a top of the first inner fork frame are hingedly connected to two ends of a bottom of the second inner fork frame; A support assembly, the support assembly includes a first support beam, a second support beam and a support arm, the first support beam is arranged inside the first inner fork frame, the second support beam is arranged inside the second inner fork frame, and the support arm is arranged between the first support beam and the second support beam; the support arm and the first support beam are hinged to each other, and a U-shaped limit piece is provided at one end of the support arm close to the second support beam, and the second support beam is clamped in the U-shaped limit piece.

2. The support structure for a scissor-type aerial work vehicle according to claim 1, characterized in that: An L-shaped clip is provided at one end of the support arm connected to the first support beam, one side of the L-shaped clip is connected to the support arm, and the other side of the L-shaped clip is hinged to the first support beam. The support arm is rotated so that the clip of the L-shaped clip fits into the first support beam.

3. The support structure for a scissor-type aerial work vehicle according to claim 2, characterized in that: A pair of ear plates are provided on the surface of the first support beam, and a support tube is provided on the surface of the L-shaped clamp. Both ends of the support tube are clamped between the two ear plates, and the ear plates and the support tube are connected by a pin shaft.

4. The support structure for a scissor-type aerial work vehicle according to claim 3, characterized in that: An adjustment hole is opened on the surface of the ear plate, and the pin shaft is passed through the adjustment hole and the support tube.

5. The support structure for a scissor-type aerial work vehicle according to claim 1, characterized in that: The U-shaped limiting component includes a first limiting surface and a second limiting surface, and the bending angle of one side of the first limiting surface is greater than the bending angle of the second limiting surface.

6. The support structure for a scissor-type aerial work vehicle according to claim 5, characterized in that: The length of the first limiting surface is smaller than the length of the second limiting surface.

7. The support structure for a scissor-type aerial work vehicle according to claim 5, characterized in that: An anti-wear pad is provided on one side of the second limiting surface, and the anti-wear pad is detachably connected to the second limiting surface.

8. The support structure for a scissor-type aerial work vehicle according to claim 7, characterized in that: A guide slope is provided on one side of the anti-wear pad abutting against the second support beam.

9. The support structure for a scissor-type aerial work vehicle according to claim 1, characterized in that: A handle is provided on the support arm.

10. An aerial work vehicle, characterized in that: The invention comprises a support structure applied to a scissor-type aerial work vehicle as described in any one of claims 1 to 9.

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