Aerial work lifting platform with drag chain tension adjusting structure and method

Abstract

The invention belongs to the field of high-altitude operation lifting platforms, and particularly relates to a high-altitude operation lifting platform with a drag chain tensioning adjusting structure and a method. The bottom end of the device body is fixedly connected with four sets of moving wheels, the device body is fixedly connected with one end of a first fixing frame, the other end of the first fixing frame is connected with one end of a drag chain body through a bolt, and a tension degree adjusting protection mechanism is arranged between the device body and the drag chain body. Through the design of the tension degree adjusting protection mechanism, the function of automatically adjusting and tightening the tension degree of the drag chain is achieved, and the problems that an existing device is not provided with an assembly capable of automatically adjusting the tension degree of the drag chain, and after long-term use, the drag chain will be loosened, and the tension degree of the drag chain cannot be automatically adjusted are solved. And if the tension degree of the drag chain is not adjusted in time, it is guaranteed that when the drag chain is in a tightened state, friction between the drag chain and a device body is extremely prone to being increased in the running process, and the service life of the drag chain is shortened.

Description

Technical Field

[0001] The present invention relates to the field of aerial work lifting platforms, and particularly to an aerial work lifting platform and method with a drag chain tension adjustment structure. Background Art

[0002] An aerial work lifting platform is a mechanical device used for vertically transporting personnel and equipment, and is widely used in fields such as construction, maintenance, and cleaning. It provides a safe and efficient aerial work solution through a stable lifting system (such as hydraulic or electric), and is equipped with safety facilities such as guardrails and anti-falling devices to adapt to different height requirements, significantly improving work efficiency and reducing manual risks. Common types include scissor-type, boom-type, and mast-type, which are suitable for various indoor and outdoor scenarios.

[0003] For a specific existing aerial work lifting platform and method with a drag chain tension adjustment structure, reference can be made to a high-rack vehicle line structure for easy maintenance with an application number of: CN201721377509.3, which includes a boom, a tracked drag chain, rollers, high-rack vehicle pipelines, track flat irons, large wire grooves, and small wire grooves. A track flat iron is fixed on the outside of the boom, and a tracked drag chain and rollers are provided on the track flat iron. The rollers are fixed at the lower end of the track flat iron, and the tracked drag chain is sleeved on the rollers. The upper end of the track flat iron is connected to the bottom of the large wire groove, and the top of the large wire groove is connected to the small wire groove. The high-rack vehicle pipeline passes through the bottom of the boom, passes through the upper part of the boom and then passes through the tracked drag chain, track flat iron, large wire groove, and small wire groove, and is then connected to the aerial work platform. Compared with the prior art, the present utility model transfers the pipelines hidden inside the boom to the outside for convenient maintenance, and at the same time, according to the working principle of the high-rack vehicle, a pipeline system matching the lifting working system is designed and manufactured, which is not only convenient for the daily maintenance of the high-rack vehicle but also reduces the risk of collision;

[0004] The above-mentioned device does not have a component that can be used to automatically adjust the tension of the drag chain. After long-term use, the drag chain will become loose. If the tension of the drag chain is not adjusted in time to ensure that the drag chain is in a taut state, the drag chain is extremely likely to increase the friction with the device main body during operation, reducing the service life of the drag chain. Therefore, in view of the above problems, an aerial work lifting platform and method with a drag chain tension adjustment structure are proposed. Summary of the Invention

[0005] In order to solve the problem that the existing device does not have a component that can be used to automatically adjust the tension of the drag chain. After long-term use, the drag chain will become loose. If the tension of the drag chain is not adjusted in time to ensure that the drag chain is in a taut state, the drag chain is extremely likely to increase the friction with the device main body during operation, reducing the service life of the drag chain, the present invention proposes an aerial work lifting platform and method with a drag chain tension adjustment structure.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: An aerial work lifting platform and method with a drag chain tension adjustment structure according to the present invention includes a device main body; four sets of moving wheels are fixedly connected to the bottom end of the device main body, one end of the device main body is fixedly connected to one end of a first fixing frame, the other end of the first fixing frame is bolted to one end of a drag chain main body, and a tension adjustment protection mechanism is arranged between the device main body and the drag chain main body;

[0007] The tension adjustment protection mechanism includes a first fixing plate, which is arranged at the left end of the device main body near the front position, and the bottom end of the first fixing plate is fixedly connected to the top end of the device main body. The rear end of the first fixing plate is bolted to the other end of the drag chain main body. A rotating push wheel is arranged above the inside of the drag chain main body. The same first transmission rods are fixedly connected to the left and right sides of the rotating push wheel. The outside of the first transmission rod is sleeved with a first sleeve block, and the first transmission rod is rotatably connected to the first sleeve block. The bottom end of the first sleeve block is fixedly connected to the top end of a first support rod, and the bottom end of the first support rod is fixedly connected to the top end of a fixed platform.

[0008] Preferably, the bottom end of the fixed platform is fixedly connected to the top end of a second fixing rod, the bottom end of the second fixing rod is fixedly connected to the top end of a moving plate, and the bottom end of a moving rod is fixedly connected to the top end of the moving plate near the front end position.

[0009] Preferably, the top end of the moving rod is fixedly connected to the bottom end of a first limiting block. The top end of the moving rod and the outside of the first limiting block are also inserted into the inside of a first sleeve rod, and the moving rod and the first limiting block are also slidably connected to the first sleeve rod. The top end of the first sleeve rod is fixedly connected to the top end of a first return spring, and the bottom end of the first return spring is fixedly connected to the top end of the first limiting block.

[0010] Preferably, the top end of the first sleeve rod is fixedly connected to the bottom end of a second limiting block. The top end of the first sleeve rod and the outside of the second limiting block are also inserted into the inside of a second sleeve rod, and the first sleeve rod and the second limiting block are also slidably connected to the second sleeve rod. The top end of the second sleeve rod is fixedly connected to the bottom end of a second return spring, and the bottom end of the second return spring is fixedly connected to the top end of the second limiting block. The rear end of the second sleeve rod is fixedly connected to the front end of a first fixing block, and the rear end of the first fixing block is fixedly connected to the front end of the first fixing plate.

[0011] Preferably, the moving plate is sleeved outside a guide rod, and the moving plate is slidably connected to the guide rod. The same second fixing blocks are fixedly connected to the upper and lower ends of the guide rod, and the right side end of the second fixing block is fixedly connected to the left side end of the first fixing plate.

[0012] Preferably, the top of the fixed table is fixedly connected to the bottom end of the second sleeve block near the rear position. At the front and rear ends near the upper position inside the second sleeve block, support wheels are also provided. The left and right sides of the support wheels are also fixedly connected to the second transmission rod. Moreover, the second sleeve block is sleeved outside the second transmission rod, and the second sleeve block is rotationally connected to the second transmission rod.

[0013] Preferably, a tension adjustment and protection mechanism is provided outside the bottom end of the device body. The tension adjustment and protection mechanism includes a fixed seat. The fixed seat is also provided at the front and rear ends on the left and right sides of the device body, and the fixed seat is fixedly connected to the outside of the device body. One end of a support frame is sleeved outside the fixed seat, and the fixed seat is rotationally connected to the support frame. One end of the fixed seat is fixedly connected to a baffle.

[0014] Preferably, the bottom end of the third fixed rod is fixedly connected to the top of the support frame near the middle position. The third fixed rod is inserted into the second fixed plate, and the third fixed rod is slidably connected to the second fixed plate. The bottom end of the second fixed plate is fixedly connected to the top end of the first fixed rod. The bottom end of the first fixed rod is fixedly connected to the top of the device body. A limit ring is sleeved outside the third fixed rod, and the third fixed rod is slidably connected to the limit ring. The top end of the limit ring is fixedly connected to the bottom end of the pulling handle. The top end of the third fixed rod is fixedly connected to the bottom end of the third limit block. A third return spring is sleeved outside the third fixed rod. The bottom end of the third return spring is fixedly connected to the top end of the limit ring, and the top end of the third return spring is fixedly connected to the bottom end of the third limit block. The front and rear ends of the top of the second fixed plate are also fixedly connected to fourth limit blocks. The limit ring is inserted into the fourth limit blocks, and the limit ring is slidably connected to the fourth limit blocks.

[0015] Preferably, a threaded rod is sleeved inside the support frame, and the support frame is threadedly connected to the threaded rod. The top end of the threaded rod is fixedly connected to the bottom end of the rotating handle. The bottom end of the threaded rod is fixedly connected to the top end of the fixed chassis. The bottom end of the fixed chassis is fixedly connected to the top end of the anti-slip pad.

[0016] Preferably, a method for adjusting an aerial work lifting platform with a drag chain tension adjustment structure includes the following steps:

[0017] S1: When the device body starts and drives the workbench to lift and lower, one end of the drag chain body moves along with the first fixed frame;

[0018] S2: The movement of the drag chain body triggers the contraction of the first return spring and the second return spring in the tension adjustment and protection mechanism, driving the moving rod and the first sleeve rod to slide along the guide rod;

[0019] S3: The fixed table uses the first support rod to push the rotating push wheel against the inside of the drag chain body, continuously applying a pulling force to ensure that the drag chain is always in a taut state;

[0020] S4: The supporting wheel moves with the second set of blocks, wraps around the outside of the drag chain body, and reduces friction and prevents the drag chain from collapsing through the second transmission rod;

[0021] S5: If the drag chain body becomes loose due to long-term use, the elastic tension of the first return spring and the second return spring automatically pulls the rotating push wheel upward to compensate for the slack of the drag chain;

[0022] S8: Rotate the rotating handle to drive the threaded rod to drive the fixed chassis and the anti-slip pad to move downward until they contact the ground, and improve the overall stability of the device through the frictional resistance;

[0023] S7: Pull the handle upward to lift the limit ring so that it disengages from the fourth limit block, and then rotate the support frame outward to the position of the baffle and fix it;

[0024] S8: Rotate the rotating handle to drive the threaded rod to drive the fixed chassis and the anti-slip pad to move downward until they contact the ground, and improve the overall stability of the device through the frictional resistance;

[0025] S9: After completing the operation, operate in reverse to retract the support frame, and the third return spring resets the limit ring to ensure that the device is easy to store.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. Through the structural design of the tension adjustment protection mechanism of the present invention, the function of automatically adjusting and tightening the tension of the drag chain is realized, and the problem that the existing device does not have a component for automatically adjusting the tension of the drag chain is solved. After long-term use, the drag chain will become loose. If the tension of the drag chain is not adjusted in time to ensure that the drag chain is in a taut state, the drag chain is very likely to increase the friction with the device body during operation, reducing the service life of the drag chain, and improving the service life of the drag chain;

[0028] 2. Through the structural design of the tension adjustment protection mechanism of the present invention, the function of preventing the drag chain from collapsing is realized, and the problem that since the drag chain is prone to aging after long-term use, the supportability of the drag chain will be insufficient at this time. If there is no component for protection and support, it is very likely that the drag chain will collapse during movement is solved, and the protection of the drag chain is improved;

[0029] 3. Through the structural design of the stability mechanism of the present invention, the function of increasing the stability of the device during use and facilitating later storage is realized, and the problem that the existing device does not have a component for reinforcement and stability is solved. When the device is operating, external forces are very likely to cause the device to displace, thus posing a safety risk, and the stability is improved. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 Schematic diagram of the first three-dimensional structure of the present invention;

[0032] Figure 2 Schematic diagram of the second three-dimensional structure of the present invention;

[0033] Figure 3 Schematic diagram of the stable component structure of the present invention;

[0034] Figure 4 Schematic diagram of the first tension adjustment and protection component structure of the present invention;

[0035] Figure 5 Schematic diagram of the second tension adjustment and protection component structure of the present invention;

[0036] Figure 6 For the present invention Figure 2 Enlarged structure diagram at position A in;

[0037] Figure 7 For the present invention Figure 2 Enlarged structure diagram at position B in;

[0038] Figure 8 For the present invention Figure 2 Enlarged structure diagram at position E in;

[0039] Figure 9 For the present invention Figure 3 Enlarged structure diagram at position C in;

[0040] Figure 10 For the present invention Figure 4 Enlarged structure diagram at position D in.

[0041] In the figure: 1, device main body; 2, moving wheels; 3, drag chain main body; 10, first fixing plate; 11, first fixing frame; 12, rotating pushing wheel; 13, first transmission rod; 14, first sleeve block; 15, first support rod; 16, fixing table; 17, second fixing rod; 18, moving plate; 19, moving rod; 20, first limiting block; 21, first sleeve rod; 22, first return spring; 23, second limiting block; 24, second sleeve rod; 25, second return spring; 26, first fixing block; 27, guiding rod; 28, second fixing block; 29, second sleeve block; 30, supporting wheel; 31, second transmission rod; 32, fixing seat; 33, support frame; 34, baffle; 35, threaded rod; 36, rotating handle; 37, fixing chassis; 38, anti-slip pad; 39, first fixing rod; 40, second fixing plate; 41, third fixing rod; 42, limiting ring; 43, third return spring; 44, third limiting block; 45, pulling handle; 46, fourth limiting block. Detailed implementation manner

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Embodiment 1

[0044] Please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 9 As shown in the figure, an aerial work lifting platform and method with a drag chain tension adjustment structure includes a device main body 1; four groups of moving wheels 2 are fixedly connected to the bottom end of the device main body 1, one end of the device main body 1 is fixedly connected to one end of the first fixing frame 11, and the other end of the first fixing frame 11 is bolted to one end of the drag chain main body 3. A tension adjustment protection mechanism is arranged between the device main body 1 and the drag chain main body 3;

[0045] The tension adjustment and protection mechanism includes a first fixing plate 10, which is arranged at the left end of the device main body 1 near the front position, and the bottom end of the first fixing plate 10 is fixedly connected to the top end of the device main body 1. The rear end of the first fixing plate 10 is bolted to the other end of the drag chain main body 3. Above the inside of the drag chain main body 3, there is a rotating push wheel 12. On the left and right sides of the rotating push wheel 12, there are also fixedly connected first transmission rods 13. The outside of the first transmission rod 13 is sleeved with a first sleeve block 14, and the first transmission rod 13 is rotatably connected to the first sleeve block 14. The inner wall of the first sleeve block 14 is circularly designed. The bottom end of the first sleeve block 14 is fixedly connected to the top end of the first support rod 15, and the bottom end of the first support rod 15 is fixedly connected to the top end of the fixed platform 16;

[0046] Further, the bottom end of the fixed platform 16 is fixedly connected to the top end of the second fixed rod 17, the bottom end of the second fixed rod 17 is fixedly connected to the top end of the moving plate 18, and the bottom end of the moving rod 19 is fixedly connected to the top end of the moving plate 18 near the front position. The moving rod 19 is designed as a circular rod;

[0047] Further, the top end of the moving rod 19 is fixedly connected to the bottom end of the first limit block 20. The top end of the moving rod 19 and the outside of the first limit block 20 are also inserted into the inside of the first sleeve rod 21, and the moving rod 19 and the first limit block 20 are also slidably connected to the first sleeve rod 21. The first limit block 20 is circularly designed. The top end of the inside of the first sleeve rod 21 is fixedly connected to the top end of the first return spring 22, and the bottom end of the first return spring 22 is fixedly connected to the top end of the first limit block 20;

[0048] Further, the top end of the first sleeve rod 21 is fixedly connected to the bottom end of the second limit block 23. The top end of the first sleeve rod 21 and the outside of the second limit block 23 are also inserted into the inside of the second sleeve rod 24, and the first sleeve rod 21 and the second limit block 23 are also slidably connected to the second sleeve rod 24. The second limit block 23 is circularly designed. The top end of the inside of the second sleeve rod 24 is fixedly connected to the bottom end of the second return spring 25, and the bottom end of the second return spring 25 is fixedly connected to the top end of the second limit block 23. The rear end of the second sleeve rod 24 is fixedly connected to the front end of the first fixed block 26, and the rear end of the first fixed block 26 is fixedly connected to the front end of the first fixing plate 10;

[0049] Further, the moving plate 18 is sleeved outside the guide rod 27, and the moving plate 18 is slidably connected to the guide rod 27. The upper and lower ends of the guide rod 27 are also fixedly connected with second fixed blocks 28. The guide rod 27 is designed as a circular rod, and the right side end of the second fixed block 28 is fixedly connected to the left side end of the first fixing plate 10;

[0050] Further, the top of the fixed table 16 is fixedly connected to the bottom end of the second sleeve block 29 near the rear position. At the front and rear ends of the upper position inside the second sleeve block 29, support wheels 30 are also provided. On the left and right sides of the support wheels 30, second transmission rods 31 are fixedly connected. The second sleeve block 29 is sleeved outside the second transmission rods 31, and the second sleeve block 29 is rotatably connected to the second transmission rods 31. The second transmission rods 31 are designed as circular rods.

[0051] During operation, when the device main body 1 starts to drive the workbench to move upward, it also drives the first fixed frame 11 to move. When the first fixed frame 11 moves, it drives one end of the drag chain main body 3 to move upward. When one end of the drag chain main body 3 moves upward, since the second return spring 25 and the first return spring 22 are in a stretched state at this time, when the drag chain main body 3 moves upward, it drives the first return spring 22 to automatically contract. At the same time, it drives the moving rod 19 and the first limit block 20 to move upward along the inside of the first sleeve rod 21. At the same time, the second return spring 25 also automatically contracts and drives the first sleeve rod 21 and the second limit block 23 to move upward along the inside of the second sleeve rod 24. The first fixed block 26 is used to fix the positions of the second sleeve rod 24 and the first fixed plate 10. At the same time, when the moving rod 19 moves upward, it also drives the moving plate 18 to move upward. When the moving plate 18 moves upward, it will move upward along the outside of the guide rod 27. The second fixed block 28 is used to fixedly support the position of the guide rod 27. At the same time, when the moving plate 18 moves upward, it drives the second fixed rod 17 and the fixed table 16 to move synchronously. The fixed table 16 drives the first support rod 15 and the first sleeve block 14 to move upward. When the first sleeve block 14 moves upward, it drives the rotating push wheel 12 to move upward and presses against the inside of the drag chain main body 3. Through the pulling force of the second return spring 25 and the first return spring 22, the rotating push wheel 12 is driven to always apply a pulling force to the drag chain main body 3, so as to ensure that the tension of the drag chain main body 3 always remains in a taut state. If the drag chain main body 3 becomes loose, the pulling forces of the second return spring 25 and the first return spring 22 will automatically pull the rotating push wheel 12 to push the drag chain main body 3 to be taut. At the same time, when the rotating push wheel 12 moves, it drives the first transmission rod 13 to rotate along the inside of the first sleeve block 14, thereby reducing the friction with the drag chain main body 3. At the same time, when the fixed table 16 moves, it also drives the second sleeve block 29 to move. When the second sleeve block 29 moves, it drives the support wheels 30 to move along the outside of the drag chain main body 3. When the support wheels 30 move, they drive the second transmission rods 31 to rotate along the inside of the second sleeve block 29, thereby reducing friction. At the same time, by wrapping the two groups of support wheels 30 around the outside of the drag chain main body 3, the drag chain main body 3 is supported to prevent the drag chain main body 3 from collapsing.

[0052] Embodiment 2

[0053] Please refer toFigure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 10 As shown in Figure 8 and Figure 10 , as another implementation manner of the present invention, a tension adjustment protection mechanism is provided on the outer side of the bottom end of the device main body 1. The tension adjustment protection mechanism includes a fixed seat 32. The fixed seat 32 is also provided at the front and rear ends on the left and right sides of the device main body 1, and the fixed seat 32 is fixedly connected to the outer side of the device main body 1. One end of a support frame 33 is sleeved outside the fixed seat 32, and the fixed seat 32 is rotatably connected to the support frame 33. The inner wall of the support frame 33 sleeved outside the fixed seat 32 is designed to be circular. One end of the fixed seat 32 is fixedly connected to a baffle 34, and the baffle 34 is square in design.

[0054] Further, the top end of the support frame 33 near the middle position is fixedly connected to the bottom end of a third fixing rod 41. The third fixing rod 41 is inserted into the second fixing plate 40, and the third fixing rod 41 is slidably connected to the second fixing plate 40. The bottom end of the second fixing plate 40 is fixedly connected to the top end of a first fixing rod 39. The bottom end of the first fixing rod 39 is fixedly connected to the top end of the device main body 1. A limiting ring 42 is sleeved outside the third fixing rod 41, and the third fixing rod 41 is slidably connected to the limiting ring 42. The third fixing rod 41 is designed as a circular rod. The top end of the limiting ring 42 is fixedly connected to the bottom end of a pulling handle 45. The top end of the third fixing rod 41 is fixedly connected to the bottom end of a third limiting block 44. A third return spring 43 is sleeved outside the third fixing rod 41. The bottom end of the third return spring 43 is fixedly connected to the top end of the limiting ring 42, and the top end of the third return spring 43 is fixedly connected to the bottom end of the third limiting block 44. The front and rear ends of the top end of the second fixing plate 40 are also fixedly connected to fourth limiting blocks 46. The limiting ring 42 is inserted into the fourth limiting blocks 46, and the limiting ring 42 is slidably connected to the fourth limiting blocks 46;

[0055] Further, a threaded rod 35 is sleeved inside the support frame 33, and the support frame 33 is threadedly connected to the threaded rod 35. The top end of the threaded rod 35 is fixedly connected to the bottom end of a rotating handle 36. The bottom end of the threaded rod 35 is fixedly connected to the top end of a fixed chassis 37. The bottom end of the fixed chassis 37 is fixedly connected to the top end of an anti-slip pad 38. The anti-slip pad 38 is made of rubber;

[0056] Further, an adjustment method for an aerial work lifting platform with a drag chain tension adjustment structure includes the following steps:

[0057] S1: When the device main body 1 starts and drives the workbench to lift and lower, one end of the drag chain main body 3 moves along with the first fixing frame 11;

[0058] S2: The movement of the drag chain body 3 triggers the contraction of the first return spring 22 and the second return spring 25 in the tension adjustment protection mechanism, driving the moving rod 19 and the first sleeve rod 21 to slide along the guide rod 27;

[0059] S3: The fixed table 16 pushes the rotating push wheel 12 against the inside of the drag chain body 3 through the first support rod 15, continuously applying a pulling force to ensure that the drag chain is always in a taut state;

[0060] S4: The support wheel 30 moves with the second sleeve block 29, wraps around the outside of the drag chain body 3, and reduces friction and prevents the drag chain from collapsing through the second transmission rod 31;

[0061] S5: If the drag chain body 3 becomes loose due to long-term use, the elastic pulling force of the first return spring 22 and the second return spring 25 automatically pulls the rotating push wheel 12 upward to compensate for the slack of the drag chain;

[0062] S6: The rotating push wheel 12 rotates within the first sleeve block 14 through the first transmission rod 13 to reduce friction with the drag chain and ensure a smooth adjustment process;

[0063] S7: Pull the handle 45 upward to lift the limit ring 42 so that it disengages from the fourth limit block 46, and then rotate the support frame 33 outward to the position of the baffle 34 for fixation;

[0064] S8: Rotate the rotating handle 36 to drive the threaded rod 35 to drive the fixed chassis 37 and the anti-slip pad 38 to move downward until they contact the ground, improving the overall stability of the device through frictional resistance;

[0065] S9: After completing the operation, operate in reverse to retract the support frame 33, and the third return spring 43 returns the limit ring 42 to ensure that the device is easy to store;

[0066] During operation, when it is necessary to increase the stability of the device, first pull the pulling handle 45 upward, driving the limiting ring 42 to move upward along the outside of the third fixing rod 41 until the limiting ring 42 completely disengages from the inside of the fourth limiting block 46 at the top of the second fixing plate 40. And when the limiting ring 42 moves upward, it will squeeze the third return spring 43 to contract, and the third limiting block 44 is used to fix the position of the third return spring 43 and has a limiting effect at the same time. Then rotate the support frame 33 outward. When the support frame 33 rotates outward, it will drive the first sleeve block 14 to move outward at the same time, and the third fixing rod 41 moves outward along the inside of the second fixing plate 40 until it completely disengages from the inside of the second fixing plate 40. And the first fixing rod 39 at the bottom of the second fixing plate 40 is used to fixedly support the position of the second fixing plate 40. When the support frame 33 rotates outward, the support frame 33 will rotate outward along the inside of the fixed seat 32 until it abuts against the baffle 34. Then rotate the rotating handle 36. When the rotating handle 36 rotates, it drives the threaded rod 35 to rotate along the inside of the support frame 33 and move downward at the same time. When the threaded rod 35 moves downward, it drives the fixed chassis 37 to move downward at the same time until the anti-slip pad 38 at the bottom of the fixed chassis 37 contacts the ground, thus increasing the stability.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An aerial work lift platform with a drag chain tension adjustment structure, comprising a device main body (1); characterized in that: The bottom end of the device main body (1) is fixedly connected with four sets of moving wheels (2). The device main body (1) is fixedly connected with one end of a first fixing frame (11), and the other end of the first fixing frame (11) is bolted to one end of a drag chain main body (3). A tension adjustment and protection mechanism is arranged between the device main body (1) and the drag chain main body (3). The tension adjustment and protection mechanism includes a first fixing plate (10). The first fixing plate (10) is arranged at the left end of the device main body (1) near the front position, and the bottom end of the first fixing plate (10) is fixedly connected with the top end of the device main body (1). The rear end of the first fixing plate (10) is bolted to the other end of the drag chain main body (3). A rotating push wheel (12) is arranged above the inside of the drag chain main body (3). The left and right sides of the rotating push wheel (12) are also fixedly connected with first transmission rods (13). A first sleeve block (14) is sleeved on the outside of the first transmission rods (13), and the first transmission rods (13) are rotatably connected with the first sleeve block (14). The bottom end of the first sleeve block (14) is fixedly connected with the top end of a first support rod (15), and the bottom end of the first support rod (15) is fixedly connected with the top end of a fixed platform (16).

2. The aerial work lift platform with a drag chain tension adjustment structure according to claim 1, characterized in that: The bottom end of the fixed platform (16) is fixedly connected with the top end of a second fixing rod (17), and the bottom end of the second fixing rod (17) is fixedly connected with the top end of a moving plate (18). The bottom end of a moving rod (19) is fixedly connected with the top end of the moving plate (18) near the front end position.

3. The aerial work lifting platform with a drag chain tension adjustment structure according to claim 2, characterized in that: The top end of the moving rod (19) is fixedly connected with the bottom end of a first limit block (20). The top end of the moving rod (19) and the outside of the first limit block (20) are also inserted into the inside of a first sleeve rod (21), and the moving rod (19) and the first limit block (20) are also slidably connected with the first sleeve rod (21). The top end of the inside of the first sleeve rod (21) is fixedly connected with the top end of a first return spring (22), and the bottom end of the first return spring (22) is fixedly connected with the top end of the first limit block (20).

4. The aerial work lifting platform and method with a drag chain tension adjustment structure according to claim 3, characterized in that: The top end of the first sleeve rod (21) is fixedly connected with the bottom end of a second limit block (23). The top end of the first sleeve rod (21) and the outside of the second limit block (23) are also inserted into the inside of a second sleeve rod (24), and the first sleeve rod (21) and the second limit block (23) are also slidably connected with the second sleeve rod (24). The top end of the inside of the second sleeve rod (24) is fixedly connected with the bottom end of a second return spring (25), and the bottom end of the second return spring (25) is fixedly connected with the top end of the second limit block (23). The rear end of the second sleeve rod (24) is fixedly connected with the front end of a first fixing block (26), and the rear end of the first fixing block (26) is fixedly connected with the front end of the first fixing plate (10).

5. The aerial work lifting platform with a drag chain tension adjustment structure according to claim 4, characterized in that: The moving plate (18) is sleeved on the outside of a guide rod (27), and the moving plate (18) is slidably connected with the guide rod (27). The upper and lower ends of the guide rod (27) are also fixedly connected with second fixing blocks (28), and the right side end of the second fixing blocks (28) is fixedly connected with the left side end of the first fixing plate (10).

6. The aerial work lifting platform with a drag chain tension adjustment structure according to claim 5, characterized in that: The top of the fixed table (16) is fixedly connected to the bottom end of the second sleeve block (29) near the rear position. At the front and rear ends near the upper position inside the second sleeve block (29), support wheels (30) are also provided. On the left and right sides of the support wheels (30), second transmission rods (31) are also fixedly connected. The second sleeve block (29) is sleeved outside the second transmission rods (31), and the second sleeve block (29) is rotatably connected to the second transmission rods (31).

7. An aerial work lifting platform with a drag chain tension adjustment structure according to claim 6, characterized in that: A tension adjustment and protection mechanism is provided on the outer side of the bottom end of the device main body (1). The tension adjustment and protection mechanism includes a fixed seat (32). The fixed seat (32) is also provided at the front and rear ends on the left and right sides of the device main body (1), and the fixed seat (32) is fixedly connected to the outer side of the device main body (1). One end of a support frame (33) is sleeved outside the fixed seat (32), and the fixed seat (32) is rotatably connected to the support frame (33). One end of the fixed seat (32) is fixedly connected to a baffle (34).

8. A high-altitude work lifting platform with a drag chain tension adjustment structure according to claim 7, characterized in that: The top of the support frame (33) near the middle position is fixedly connected to the bottom end of a third fixing rod (41). The third fixing rod (41) is inserted into the second fixing plate (40), and the third fixing rod (41) is slidably connected to the second fixing plate (40). The bottom end of the second fixing plate (40) is fixedly connected to the top end of a first fixing rod (39). The bottom end of the first fixing rod (39) is fixedly connected to the top end of the device main body (1). A limiting ring (42) is sleeved outside the third fixing rod (41), and the third fixing rod (41) is slidably connected to the limiting ring (42). The top end of the limiting ring (42) is fixedly connected to the bottom end of a pulling handle (45). The top end of the third fixing rod (41) is fixedly connected to the bottom end of a third limiting block (44). A third return spring (43) is sleeved outside the third fixing rod (41). The bottom end of the third return spring (43) is fixedly connected to the top end of the limiting ring (42), and the top end of the third return spring (43) is fixedly connected to the bottom end of the third limiting block (44). At the front and rear ends of the top end of the second fixing plate (40), fourth limiting blocks (46) are also fixedly connected. The limiting ring (42) is inserted into the fourth limiting blocks (46), and the limiting ring (42) is slidably connected to the fourth limiting blocks (46).

9. An aerial work lifting platform with a drag chain tension adjustment structure according to claim 8, characterized in that: A threaded rod (35) is sleeved inside the support frame (33), and the support frame (33) is threadedly connected to the threaded rod (35). The top end of the threaded rod (35) is fixedly connected to the bottom end of a rotating handle (36). The bottom end of the threaded rod (35) is fixedly connected to the top end of a fixed chassis (37). The bottom end of the fixed chassis (37) is fixedly connected to the top end of an anti-slip pad (38).

10. A method for adjusting an aerial work lifting platform with a drag chain tensioning adjustment structure, applicable to an aerial work lifting platform with a drag chain tensioning adjustment structure described in any one of claims 1-9, characterized in that: This method includes the following steps: S1: When the device main body (1) starts and drives the workbench to move up and down, one end of the drag chain main body (3) moves along with the first fixed frame (11). S2: The movement of the drag chain main body (3) triggers the contraction of the first return spring (22) and the second return spring (25) in the tension adjustment and protection mechanism, driving the moving rod (19) and the first sleeve rod (21) to slide along the guide rod (27). S3: The fixed platform (16) pushes the rotating push wheel (12) against the inside of the drag chain body (3) through the first support rod (15), continuously applying a pulling force to ensure that the drag chain is always in a taut state. S4: The support wheel (30) moves with the second set block (29), wraps around the outside of the drag chain body (3), and reduces friction and prevents the drag chain from collapsing through the second transmission rod (31). S5: If the drag chain body (3) becomes loose due to long-term use, the elastic pulling forces of the first return spring (22) and the second return spring (25) automatically pull the rotating push wheel (12) upward to compensate for the slack of the drag chain. S6: The rotating push wheel (12) rotates within the first set block (14) through the first transmission rod (13), reducing friction with the drag chain to ensure a smooth adjustment process. S7: Pull the handle (45) upward to lift the limit ring (42) out of the fourth limit block (46), and then rotate the support frame (33) outward to the position of the baffle (34) and fix it. S8: Rotate the rotating handle (36) to drive the threaded rod (35) to drive the fixed chassis (37) and the anti-slip pad (38) downward until they contact the ground, enhancing the overall stability of the device through frictional resistance. S9: After completing the operation, operate in reverse to retract the support frame (33), and the third return spring (43) returns the limit ring (42) to ensure that the device is convenient for storage.

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