Hydraulic system for scissor lift aerial work platforms

Abstract

This utility model relates to the field of aerial work platform technology, specifically the walking hydraulic system of a scissor lift aerial work platform. It includes a base, a drive platform body mounted on top of the base, and a scissor lift frame for driving the platform body. A first servo motor is installed on the inner wall of the base, and worm gears are fixedly connected to both output shafts of the first servo motor. A rotating rod and a first support plate are rotatably connected to the inner wall of the base. This utility model allows for real-time adjustment of the height and direction of movement of the scissor lift aerial work platform according to the user's needs, enabling the platform to travel in a straight line and perform turning operations, while avoiding slippage during turns and preventing air suction in the pipeline. Furthermore, the traveling wheels can be retracted during use, allowing the scissor lift aerial work platform to directly contact the ground, thereby improving stability during use. The operation is also simple and quick.

Description

Technical Field

[0001] This utility model relates to the field of aerial work platform technology, specifically the walking hydraulic system of a scissor lift aerial work platform. Background Technology

[0002] A self-propelled scissor lift is a machine used to lift personnel, tools, and materials to high-altitude work sites and to achieve self-propelled movement through a hydraulic system. A scissor lift typically includes two travel motors, namely a left motor and a right motor. The movement of both travel motors is controlled by a hydraulic system to enable the platform to move forward, backward, and turn.

[0003] When two travel motors of a self-propelled scissor lift are connected in series, the wheel speeds are also the same because the flow rates of the two motors are the same. This ensures that the self-propelled scissor lift can travel in a straight line. However, when the self-propelled scissor lift needs to turn, the linear speeds of the two steering wheels on both sides must be different. Therefore, the inner steering wheel will slip during a turn, and the pipeline will suck in air. To address these issues, we have provided a travel hydraulic system for scissor lifts. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a walking hydraulic system for scissor lifts. This solution can adjust the height and direction of movement of the scissor lift in real time according to the needs of the user, so that the scissor lift can travel in a straight line and make turning operations, and avoid slippage and air suction in the pipeline when turning. At the same time, the scissor lift can directly contact the ground of the working area when in use, thereby improving the stability during use, and the operation process is simple and quick.

[0005] To solve the above problems, this utility model provides the following technical solution: a walking hydraulic system for a scissor lift aerial work platform, including a base, a drive platform body and a scissor lift frame for driving the platform body are arranged on the top of the base, a first servo motor is installed on the inner wall of the base, and worm gears are fixedly connected to the two output shaft ends of the first servo motor, a rotating rod and a first support plate are rotatably connected to the inner wall of the base, a protrusion and a worm wheel are fixedly connected to the outer surface of the rotating rod, and the worm gear and the worm wheel mesh with each other, a connecting block is hinged to the upper surface of the protrusion through a pin, and the connecting block is hinged to the first support plate, a first electric hydraulic cylinder is installed on the bottom surface of the first support plate, a support frame is fixedly connected to the telescopic end of the first electric hydraulic cylinder, a second servo motor is installed on the inner wall of the support frame, a walking wheel is fixedly connected to the output shaft end of the second servo motor, a first control panel is installed on the inner wall of the platform body, and a battery is fixedly connected to the inner wall of the base.

[0006] Furthermore, the inner wall of the scissor lift is hinged with a moving rod and a support rod. The outer surface of the moving rod is fixedly connected with a slider, and the slider is slidably connected to the base and the platform body at the corresponding positions. The support rod is fixed to the base and the platform body at the corresponding positions. The outer surface of the support rod is hinged with a second electric hydraulic cylinder, and the telescopic end of the second electric hydraulic cylinder is hinged to the moving rod.

[0007] The beneficial effect of adopting the above-mentioned further solution is that, through the coordinated arrangement of the above structures, the height of the scissor lift aerial work platform can be adjusted.

[0008] Furthermore, two push rods are fixedly connected to the front of the base, and a second support plate is provided on the outside of the base to be fixed to the push rods at the corresponding positions. A second control panel is fixedly connected to the upper surface of the second support plate.

[0009] The beneficial effect of adopting the above-mentioned further solution is that by setting a push rod, the scissor lift platform can be easily moved, and the second control panel can be fixedly supported by the second support plate. Furthermore, the electrical components inside the scissor lift platform can be uniformly controlled using the second control panel.

[0010] Furthermore, a nameplate for recording production information and technical data under rated working conditions of the scissor lift is fixedly connected to one side of the base.

[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting a nameplate, the production information and technical data of the scissor lift aerial work platform under rated working conditions can be recorded, and the instruction manual on the nameplate is set by engraving, which effectively avoids wear and tear on the instruction manual on the nameplate due to long-term use.

[0012] Furthermore, a climbing ladder for assisting climbing on the scissor lift aerial work platform is fixedly connected to the inner wall of the base.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by setting up climbing ladders, it is convenient for workers to climb to the main body of the platform to carry out high-altitude operations, thereby improving the convenience of use.

[0014] Furthermore, a protective door is hinged to the outer surface of the platform body via a hinge. Two sliding rods are slidably connected to the inner wall of the protective door, and the sliding rods are slidably connected to the platform body. A fixing plate is provided on the outside of the platform body to be fixed to the sliding rods at corresponding positions. A return spring is sleeved on the outer surface of each sliding rod, and the two ends of the return spring are fixed to the protective door and the fixing plate, respectively.

[0015] The beneficial effect of adopting the above-mentioned further solutions is that, through the coordinated arrangement of the above structures, the main body of the platform can be enclosed, thereby preventing workers from accidentally falling from the gaps in the main body of the platform and thus improving the protective performance of the scissor lift aerial work platform.

[0016] Furthermore, the inner wall of the platform body is fixedly connected with a placement frame for placing high-altitude work tools.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by setting up a placement frame, it is convenient to place high-altitude work tools, thereby improving the convenience of subsequent retrieval.

[0018] Furthermore, a connecting plate for traction of the scissor lift aerial work platform is fixedly connected to the front of the base.

[0019] The advantage of adopting the above-mentioned further solution is that by setting up a connecting plate, the scissor lift can be easily towed and moved, thereby improving the convenience of use.

[0020] Furthermore, the bottom surface of the first support plate is hinged with a support frame via a pin, and the support frame is hinged to the support frame.

[0021] The beneficial effect of adopting the above-mentioned further solution is that by setting up a support frame, the vertical movement of the support frame can be assisted, thereby improving the stability during movement.

[0022] Compared with existing technologies, the travel hydraulic system of this scissor lift aerial work platform has the following advantages:

[0023] 1. This utility model can adjust the height and direction of movement of the scissor lift platform in real time according to the needs of the user, so that the scissor lift platform can travel in a straight line and make turning operations, and avoid slippage when turning and avoid air suction in the pipeline. At the same time, the traveling wheels can be retracted when the scissor lift platform is in use, so that the scissor lift platform can directly contact the ground of the working area, thereby improving the stability during use, and the operation process is simple and quick.

[0024] 2. This utility model, by setting up a push rod, a first support plate, and a second control panel, can easily move the scissor lift platform and uniformly control the electrical components inside the scissor lift platform. A nameplate records production information and technical data under rated working conditions. A climbing ladder facilitates workers' access to the platform for high-altitude work. The coordinated arrangement of the safety door, sliding rod, fixing plate, and return spring encloses the platform body, preventing workers from accidentally falling through openings. A placement frame facilitates the placement of high-altitude work tools. A connecting plate facilitates the traction and movement of the scissor lift platform. A support frame provides auxiliary support for the vertical movement of the support frame, improving stability during movement. Attached Figure Description

[0025] Figure 1 This is a three-dimensional front view of the overall device of this utility model;

[0026] Figure 2 This is a rear view of the three-dimensional structure of the overall device of this utility model;

[0027] Figure 3 This is a bottom view of the overall structure of the device of this utility model;

[0028] Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of a partial structure of the present invention. Figure 3 ;

[0031] Figure 7 This is a schematic diagram of a partial structure of the present invention. Figure 4 .

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Base; 2. First servo motor; 3. Worm gear; 4. Scissor lift; 5. Platform body; 6. First control panel; 7. Moving rod; 8. Support rod; 9. Slider; 10. Second electric hydraulic cylinder; 11. Rotating rod; 12. Protrusion; 13. Worm gear; 14. Connecting block; 15. First support plate; 16. Nameplate; 17. Climbing ladder; 18. Safety door; 19. Sliding rod; 20. Fixing plate; 21. Return spring; 22. Placement frame; 23. Connecting plate; 24. First electric hydraulic cylinder; 25. Support frame; 26. Second servo motor; 27. Traveling wheel; 28. Support frame; 29. ​​Push rod; 30. Second support plate; 31. Second control panel; 32. Battery. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed structures. Those skilled in the art can understand the specific meaning of these terms in this patent based on the specific circumstances.

[0036] As described in the background art, when two travel motors of a self-propelled scissor lift are connected in series, the wheel speeds are also the same because the flow rates of the two motors are the same. This ensures that the self-propelled scissor lift can travel in a straight line. However, when the self-propelled scissor lift needs to turn, the linear velocities of the two steering wheels are different. Therefore, the inner steering wheel will slip during turning, and the pipeline will suck in air. To address this, this embodiment provides a travel hydraulic system for the scissor lift. This device can adjust the height and direction of movement of the scissor lift in real time according to the user's needs, thereby enabling the scissor lift to travel in a straight line and perform turning operations, while avoiding slippage and air sucking in the pipeline during turning. At the same time, it allows the scissor lift to directly contact the ground of the operating area during use, thereby improving stability during use, and the operation process is simple and quick.

[0037] See Figure 1 - Figure 7 This embodiment proposes a walking hydraulic system for a scissor lift aerial work platform, including a base 1, a drive platform body 5 disposed on the base 1, and a scissor lift 4 for driving the platform body 5. The user can stand on the platform body 5 to perform aerial work and can adjust the height of the platform body 5 by driving it through the scissor lift 4.

[0038] The inner wall of the scissor lift 4 is hinged with a moving rod 7 and a support rod 8. The outer surface of the moving rod 7 is fixedly connected with a slider 9, and the slider 9 is slidably connected to the base 1 and the platform body 5 at the corresponding positions. The support rod 8 is fixed to the base 1 and the platform body 5 at the corresponding positions. The outer surface of the support rod 8 is hinged with a second electric hydraulic cylinder 10, and the telescopic end of the second electric hydraulic cylinder 10 is hinged to the moving rod 7.

[0039] When the second electric hydraulic cylinder 10 is powered on and started, its telescopic end extends and retracts. It can drive the slider 9 on it to slide along the reserved groove opened on the base 1 and the platform body 5 at the corresponding position through the moving rod 7. Under the limiting action of the support rod 8 being fixed to the base 1 and the platform body 5 at the corresponding position, it can drive the scissor lift 4 to unfold and retract, thereby driving the platform body 5 to adjust its height.

[0040] The front of the base 1 is fixedly connected to a connecting plate 23 for towing the scissor lift platform. By setting the connecting plate 23, the scissor lift platform can be easily towed and moved, thereby improving the convenience of use.

[0041] Two push rods 29 are fixedly connected to the front of the base 1. A second support plate 30 is provided on the outside of the base 1 and fixed to the push rods 29 at the corresponding positions. A second control panel 31 is fixedly connected to the upper surface of the second support plate 30. By setting the push rods 29, the scissor lift platform can be easily moved. The second control panel 31 is fixedly supported by the second support plate 30. The electrical components inside the scissor lift platform can be uniformly controlled by the second control panel 31.

[0042] A nameplate 16 is fixedly connected to one side of the base 1 for recording the production information and technical data of the scissor lift under rated working conditions. By setting the nameplate 16, the production information and technical data of the scissor lift under rated working conditions can be recorded. The instruction manual on the nameplate 16 is set by engraving, which effectively avoids wear and tear on the instruction manual on the nameplate 16 due to long-term use.

[0043] The inner wall of the base 1 is equipped with a first servo motor 2. Both output shafts of the first servo motor 2 are fixedly connected to worm gears 3. The inner wall of the base 1 is rotatably connected to a rotating rod 11 and a first support plate 15. The outer surface of the rotating rod 11 is fixedly connected to a protrusion 12 and a worm wheel 13, and the worm gear 3 and the worm wheel 13 mesh with each other.

[0044] When the first servo motor 2 is powered on and started, it can drive the two worm gears 3 to rotate synchronously. Through the meshing between the worm gear 3 and the worm wheel 13, the worm wheel 13 can be driven to rotate, which in turn drives the protrusion 12 to rotate through the rotating rod 11.

[0045] The upper surface of the protrusion 12 is hinged to a connecting block 14 by a pin, and the connecting block 14 is hinged to the first support plate 15. The bottom surface of the first support plate 15 is equipped with a first electric hydraulic cylinder 24. The telescopic end of the first electric hydraulic cylinder 24 is fixedly connected to a support frame 25. The inner wall of the support frame 25 is equipped with a second servo motor 26. The output shaft end of the second servo motor 26 is fixedly connected to a traveling wheel 27.

[0046] After the protrusion 12 rotates, the connecting block 14, which is hinged to the protrusion 12 and the first support plate 15 respectively, drives the first support plate 15 to rotate. The first electric hydraulic cylinder 24, the support frame 25 and the second servo motor 26 cooperate to drive the traveling wheel 27 to turn. The first electric hydraulic cylinder 24 is powered on and started, and its extension and retraction can drive the support frame 25 to move up and down. At the same time, the second servo motor 26 is powered on and started, and can drive the traveling wheel 27 to rotate, thereby driving the scissor lift aerial work platform to move.

[0047] The bottom surface of the first support plate 15 is hinged with a support frame 28 by a pin, and the support frame 28 is hinged to the support frame 25. By setting the support frame 28, the up and down movement of the support frame 25 can be assisted, thereby improving the stability during movement.

[0048] The inner wall of the platform body 5 is equipped with a first control panel 6. By setting the first control panel 6, the electrical components inside the scissor lift can be controlled in a unified manner. The inner wall of the base 1 is fixedly connected with a storage battery 32. By setting the storage battery 32, the electrical components inside the scissor lift can be provided with power support, so that the corresponding operation can be realized without having to be connected to an external power source by wires at all times.

[0049] The inner wall of the base 1 is fixedly connected with a climbing ladder 17 for assisting climbing of the scissor lift aerial work platform. By setting up the climbing ladder 17, it is convenient for workers to climb to the main body of the platform 5 to carry out high-altitude work, thereby improving the convenience of use.

[0050] The inner wall of the platform body 5 is fixedly connected with a placement frame 22 for placing high-altitude work tools. By setting the placement frame 22, high-altitude work tools can be conveniently placed, thereby improving the convenience of subsequent retrieval.

[0051] A protective door 18 is hinged to the outer surface of the platform body 5. Two slide rods 19 are slidably connected to the inner wall of the protective door 18, and the slide rods 19 are slidably connected to the platform body 5. A fixing plate 20 is provided on the outside of the platform body 5 to be fixed to the slide rods 19 at the corresponding positions. A return spring 21 is sleeved on the outer surface of each slide rod 19, and the two ends of the return spring 21 are fixed to the protective door 18 and the fixing plate 20 respectively.

[0052] Pulling the fixed plate 20 upwards causes the slide bar 19 to slide along the inner wall of the platform body 5 and the protective door 18, stretching the return spring 21 and causing it to deform elastically. Once the slide bar 19 has completely slid out of the inner wall of the platform body 5, the restriction on the protective door 18 can be released, allowing it to rotate around the hinge. This allows workers to enter the platform body 5 without obstruction, and after entering, the protective door 18 can be restricted again to close the platform body 5, thus preventing workers from accidentally falling through the gap in the platform body 5 and improving the protective performance of the scissor lift aerial work platform.

[0053] The components in the accompanying drawings of this utility model are for styling reference only and are not specific dimensional standards. The specific dimensions are determined according to the actual production requirements, and the materials of each component can be replaced accordingly based on actual needs.

[0054] All electrical components in this invention are commercially available, conventional equipment known to those skilled in the art. Models can be selected or customized according to actual needs. The setting method, installation method, and electrical connection method can be easily understood by those skilled in the art by following the instructions for use, and will not be described in detail here.

[0055] Working Principle: When using the hydraulic system of the scissor lift aerial work platform, the first servo motor 2 can be powered on and started, driving the two worm gears 3 to rotate synchronously. Through the meshing between the worm gears 3 and the worm wheel 13, the worm wheel 13 can be driven to rotate, which in turn drives the cam 12 to rotate through the rotating rod 11. After the cam 12 rotates, it can drive the first support plate 15 to rotate through the connecting block 14, which is hinged to the cam 12 and the first support plate 15 respectively. Through the cooperation between the first electric hydraulic cylinder 24, the support frame 25 and the second servo motor 26, the traveling wheel 27 is driven to steer. When the first electric hydraulic cylinder 24 is powered on and started, its extension and retraction can drive the support frame 25 to move up and down, thereby realizing the rotation of the scissor lift aerial work platform. The traveling wheels 27 are retracted into the base 1, allowing the scissor lift to directly contact the ground in the operating area, thereby improving stability during use. At the same time, the second servo motor 26 is powered on and started, driving the traveling wheels 27 to rotate, thus enabling linear movement and turning of the scissor lift. The second electric hydraulic cylinder 10 is powered on and started, and its telescopic end extends and retracts. It can drive the slider 9 on the moving rod 7 to slide along the reserved grooves opened on the base 1 and the platform body 5 at the corresponding positions. Under the limiting action of the support rod 8, which is fixed to the base 1 and the platform body 5 at the corresponding positions, the scissor frame 4 can be extended and retracted, thereby enabling the platform body 5 to adjust its height.

[0056] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise expressly specified and limited, the terms "installed," "connected," or "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0058] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. The traveling hydraulic system of a scissor lift aerial work platform, characterized in that: Includes a base (1), a drive platform body (5) is provided above the base (1), and a scissor lift (4) for driving the platform body (5). A first servo motor (2) is installed on the inner wall of the base (1). A worm gear (3) is fixedly connected to both output shaft ends of the first servo motor (2). A rotating rod (11) and a first support plate (15) are rotatably connected to the inner wall of the base (1). A protrusion (12) and a worm wheel (13) are fixedly connected to the outer surface of the rotating rod (11), and the worm gear (3) and the worm wheel (13) mesh with each other. The upper surface of the protrusion (12) is hinged to a connecting block (14) by a pin, and the connecting block (14) is hinged to the first support plate (15). The bottom surface of the first support plate (15) is equipped with a first electric hydraulic cylinder (24). The telescopic end of the first electric hydraulic cylinder (24) is fixedly connected to a support frame (25). The inner wall of the support frame (25) is equipped with a second servo motor (26). The output shaft end of the second servo motor (26) is fixedly connected to a walking wheel (27). The inner wall of the platform body (5) is equipped with a first control panel (6). The inner wall of the base (1) is fixedly connected to a battery (32).

2. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: The inner wall of the scissor lift (4) is hinged with a moving rod (7) and a support rod (8). The outer surface of the moving rod (7) is fixedly connected with a slider (9), and the slider (9) is slidably connected to the base (1) and the platform body (5) at the corresponding positions. The support rod (8) is fixed to the base (1) and the platform body (5) at the corresponding positions. The outer surface of the support rod (8) is hinged with a second electric hydraulic cylinder (10), and the telescopic end of the second electric hydraulic cylinder (10) is hinged to the moving rod (7).

3. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: Two push rods (29) are fixedly connected to the front of the base (1). A second support plate (30) is provided on the outside of the base (1) and fixed to the push rods (29) at the corresponding positions. A second control panel (31) is fixedly connected to the upper surface of the second support plate (30).

4. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: A nameplate (16) for recording production information and technical data under rated working conditions of the scissor lift aerial work platform is fixedly connected to one side of the base (1).

5. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: The inner wall of the base (1) is fixedly connected to a climbing ladder (17) for assisting climbing of the scissor lift aerial work platform.

6. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: The outer surface of the platform body (5) is hinged with a protective door (18). The inner wall of the protective door (18) is slidably connected with two slide rods (19), and the slide rods (19) are slidably connected to the platform body (5). The platform body (5) is provided with a fixing plate (20) that is fixed to the slide rods (19) at the corresponding positions. Each slide rod (19) is fitted with a return spring (21) on its outer surface, and the two ends of the return spring (21) are fixed to the protective door (18) and the fixing plate (20) respectively.

7. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: The inner wall of the platform body (5) is fixedly connected to a placement frame (22) for placing high-altitude work tools.

8. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: The front of the base (1) is fixedly connected to a connecting plate (23) for traction of the scissor lift aerial work platform.

9. The traveling hydraulic system of the scissor lift aerial work platform according to claim 1, characterized in that: The bottom surface of the first support plate (15) is hinged with a support frame (28) by a pin, and the support frame (28) is hinged to the support frame (25).

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