A mobile lifting platform with a drag chain tensioning adjustment structure and method

Abstract

The application belongs to the field of mobile lifting platform, and particularly relates to a mobile lifting platform with a tow chain tensioning adjusting structure and a method, which comprises a mobile base, a lifting table top end connected with the mobile base bottom end, a mobile base front end fixedly connected with one end of a tow chain body, a lifting table front end fixedly connected with the other end of the tow chain body, and a tensioning automatic adjusting and removing mechanism arranged between the lifting table and the tow chain body. Through the design of the tensioning automatic adjusting and removing mechanism, the function of automatically tensioning and adjusting the tow chain is realized. The existing device does not have a component for tensioning and automatically adjusting the tow chain. When the tow chain is subjected to long-term high-frequency expansion and reciprocating motion, the hinge points between the chain links are gradually worn due to continuous friction, the overall length is gradually lengthened and loosened, abnormal scraping and collision with the main body structure of the equipment occur, the wear and damage of the tow chain are accelerated, and the practicability is improved.

Description

Technical Field

[0001] This invention relates to the field of mobile lifting platforms, specifically a mobile lifting platform and method with a drag chain tension adjustment structure. Background Technology

[0002] Mobile lifting platforms are aerial work platforms equipped with wheels or mobile chassis. They can be flexibly moved to different work points and quickly lift people or goods. They are widely used in construction, warehousing, and stadium maintenance. Cable chains are key components inside the platform used to store and protect hydraulic, cable, or air hoses. They can guide the movement of pipelines in an orderly manner as the lifting arm extends, retracts, and folds, avoiding entanglement, wear, or breakage, thereby ensuring the safe and reliable operation of the equipment during repeated lifting processes.

[0003] A specific example of an existing mobile lifting platform can be found in application number CN202421184839.0. This mobile lifting platform includes a mobile base, with two drive wheels on both the front and rear sides. A scissor-type cross steel pipe is installed on the top of the mobile base, and a lifting platform is fixedly mounted on the top of the scissor-type cross steel pipe. A drive compartment is located at the bottom of the mobile base, and an electric push rod is installed at the center of the top of the inner wall of the drive compartment. A ground-contact plate is fixedly mounted at the output end of the electric push rod. This invention, through the cooperation of the drive wheels, electric push rod, and ground-contact plate, allows the mobile base to be moved directly by a motor driving the drive wheels. When lifting is required, the electric push rod can be activated to bring the ground-contact plate to the ground and slightly lift the drive wheels off the ground, thus maintaining the stability of the lifting platform and significantly improving the efficiency of stable placement and movement of the mobile lifting platform. The aforementioned device does not include a component for automatically adjusting the tension of the cable chain. When the cable chain is in long-term, high-frequency reciprocating motion, the hinge points between its links will gradually wear down due to continuous friction, causing the overall length to increase and the chain to become loose. If the loose cable chain is not tensioned in time, it will no longer stay on the predetermined trajectory during movement, and will cause abnormal scraping and collision with the main structure of the equipment, thereby accelerating its own wear and damage and significantly reducing its service life. Therefore, in order to address the above problems, a mobile lifting platform and method with a cable chain tension adjustment structure is proposed. Summary of the Invention

[0004] To address the problem that existing devices lack components for automatic tension adjustment of the cable chain, causing wear and tear at the hinge points between chain links during long-term, high-frequency reciprocating motion, resulting in increased length and loosening of the chain, and if the loosened chain is not tensioned in time, it will no longer maintain its predetermined trajectory during movement, leading to abnormal scraping and collisions with the main structure of the equipment, thus accelerating its wear and damage and significantly reducing its service life, this invention proposes a mobile lifting platform and method with a cable chain tension adjustment structure.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a mobile lifting platform and method with a drag chain tension adjustment structure, including a mobile base; the top end of the mobile base is connected to the bottom end of the lifting platform, the front end of the mobile base is fixedly connected to one end of the drag chain body, the front end of the lifting platform is fixedly connected to the other end of the drag chain body, and an automatic tension adjustment and removal mechanism is provided between the lifting platform and the drag chain body. The automatic tension adjustment and removal mechanism includes a fixed frame, which is installed inside the cable chain body. Three sets of rotating sleeves are sleeved on the outside of the fixed frame, and the fixed frame is rotatably connected to the rotating sleeves. The outside of the rotating sleeves abuts against the top of the inner wall of the cable chain body. The front end of the fixed frame is fixedly connected to the rear end of the first fixed plate. The front end of the first fixed plate is fixedly connected to the rear end of the fixed rod. A rotating block is sleeved on the outside of the fixed rod, and the fixed rod is rotatably connected to the rotating block.

[0006] Preferably, the front end of the drag chain body is provided with a transmission plate, the transmission plate has a guide groove inside, the guide groove is sleeved on the outside of the rotating block, and the rotating block is slidably connected to the guide groove. Limiting plates are also provided at the front and rear ends of the outer side of the fixed rod near the front and rear ends of the transmission plate, and the outer side of the fixed rod is fixedly connected to the inner wall of the limiting plate.

[0007] Preferably, the upper and lower ends of the left side of the transmission plate are also provided with fixed push rods, and the left side of the transmission plate is fixedly connected to the right side of the fixed push rod. A fixed sleeve is sleeved on the outer side of the left side of the fixed push rod, and the fixed push rod is slidably connected to the fixed sleeve. The left side of the fixed sleeve is fixedly connected to the right side of the second fixed plate.

[0008] Preferably, a first return spring is provided inside the fixed sleeve rod. The left end of the first return spring is fixedly connected to the left end of the inside of the fixed sleeve rod, and the right end of the first return spring is fixedly connected to the left end of the fixed push rod. Guide limiting blocks are also provided at the front and rear ends of the outer side of the fixed push rod near the left side position. The outer side of the fixed push rod is fixedly connected to one end of the guide limiting block, and the other end of the guide limiting block is inserted into the inner wall of the fixed sleeve rod. The guide limiting block is slidably connected to the fixed sleeve rod.

[0009] Preferably, the bottom end of the fixing frame is fixedly connected to the top end of the first fixing connecting frame, the rear end of the first fixing connecting frame is fixedly connected to the front end of the first fixing sleeve block, the rear end of the first fixing sleeve block is sleeved on the outside of the guide block, and the first fixing sleeve block is slidably connected to the guide block.

[0010] Preferably, multiple sets of rollers are also sleeved inside the left and right sides of the guide block, and the guide block is rotatably connected to the rollers. The outer side of the rollers abuts against the inner wall of the first fixed sleeve block, and the rollers are slidably connected to the first fixed sleeve block.

[0011] Preferably, the left end of the second fixing plate is fixedly connected to the right end of the second fixing connecting frame, the rear end of the second fixing connecting frame is fixedly connected to the front end of the second fixing sleeve block, the rear end of the second fixing sleeve block is inserted outside the fixing block, and the second fixing sleeve block is slidably connected to the fixing block, the rear end of the fixing block is fixedly connected to the front end of the lifting platform, the left and right sides of the fixing block are also provided with mounting grooves, the inside of the mounting grooves is fixedly connected to the guide rod limit, the outer side of the guide rod limit is provided with a pressing moving plate, and the guide rod limit is slidably connected to the pressing moving plate, the upper and lower ends of the side end of the pressing moving plate are also provided with positioning rods, and the side end of the pressing moving plate is fixedly connected to one end of the positioning rod, the other end of the positioning rod is inserted inside the second fixing sleeve block, and the positioning rod is slidably connected to the second fixing sleeve block, and the side end of the pressing moving plate is fixedly connected to the pressing rod.

[0012] Preferably, a second reset spring is sleeved on the outer side of the guide rod limiter, one end of the second reset spring is fixedly connected to the inner wall of the mounting groove, and the other end of the second reset spring is fixedly connected to the pressing moving plate.

[0013] Preferably, the rear end of the guide block is fixedly connected to the front end of the positioning block, the rear end of the positioning block is inserted into the positioning box, and the positioning box is slidably connected to the positioning block. The rear end of the positioning box is fixedly connected to the front end of the lifting platform.

[0014] Preferably, in step S1: when the drag chain body becomes loose, the first return spring inside the fixed sleeve will automatically pop out, pushing the fixed push rod to move outward. When the fixed push rod moves outward, it will push the transmission plate to move parallel to the right. When the transmission plate moves, the guide groove opened on the transmission plate will move along the outside of the rotating block. Since the guide groove is designed to gradually rise upward, the rotating block will drive the fixed rod and the first fixed plate to move upward simultaneously under the influence of the guide groove. When the first fixed plate moves upward, it will drive the fixed frame and the rotating sleeve to move upward simultaneously. The rotating sleeve will push against the inner wall of the drag chain body and move upward, thereby maintaining a taut state. S2: When the fixed frame moves, it will drive the first fixed connecting frame and the first fixed sleeve block to move upward at the same time. When the first fixed sleeve block moves, it will move along the outside of the guide block and the first fixed sleeve block will move against the outside of the roller, thereby driving the roller to rotate along the inside of the guide block to reduce friction. S3: When removing, press the pressing rods on both sides of the fixing block inward, which will drive the pressing moving plate and the positioning rod to move inward at the same time. The second reset spring will be compressed and moved along the outer side of the guide rod limit until the positioning rod is removed from the inside of the second fixing block. This will cancel the limiting effect on the second fixing block, thereby pulling the second fixing connecting frame outward and driving the second fixing block to move outward along the outer side of the fixing block until it is removed. S4: The second fixed connecting bracket moves outward, which in turn drives the guide block to move outward. When the guide block moves outward, it will drive the positioning block to move outward along the inside of the positioning box until it is completely removed from the inside of the cable chain body.

[0015] The advantages of this invention are: 1. This invention, through the structural design of the automatic tension adjustment and dismantling mechanism, realizes the function of automatically adjusting the tension of the cable chain. This solves the problem that existing devices do not have components for automatically adjusting the tension of the cable chain. When the cable chain is in long-term, high-frequency reciprocating motion, the hinge points between its links will gradually wear due to continuous friction, causing the overall length to increase and become loose. If the loose cable chain is not tensioned in time, it will no longer stay on the predetermined trajectory during movement, and will cause abnormal scraping and collision with the main structure of the equipment, thereby accelerating its own wear and damage, significantly reducing its service life, and improving practicality. 2. This invention achieves a significant reduction in friction through the structural design of the automatic tension adjustment and removal mechanism. It solves the problem that if no friction-reducing component is provided, the cable chain will rub against the tension adjustment during movement. Long-term friction will cause the inner side of the cable chain to thin, thus accelerating the loosening of the cable chain. This invention effectively reduces the friction between the cable chain and the tension adjustment component, reduces the wear rate of the cable chain, extends the service life of the cable chain, and improves the protection of the cable chain. 3. This invention, through the structural design of the automatic tension adjustment and removal mechanism, achieves the function of easy removal. It solves the problem that if no easy-to-maintain component is provided, the automatic tension adjustment component, with one end inserted inside the cable chain, will obstruct the automatic tension adjustment component during maintenance, increasing the difficulty of maintenance. The automatic tension adjustment component can be quickly removed without special tools, avoiding the obstruction of maintenance work by the cable chain, reducing the difficulty of maintenance, and improving the convenience of maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional first structural schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram of the second structure of the present invention; Figure 3 This is a schematic diagram of the first structure of the automatic tension adjustment and dismantling mechanism of the present invention; Figure 4 This is a schematic diagram of the second structure of the automatic tension adjustment and dismantling mechanism of the present invention; Figure 5 This is a schematic diagram of the third structure of the automatic tension adjustment and dismantling mechanism of the present invention; Figure 6 This is a schematic diagram of the fourth structure of the automatic tension adjustment and dismantling mechanism of the present invention; Figure 7 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 8 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 9 For the present invention Figure 3 Enlarged structural diagram at point C; Figure 10 For the present invention Figure 4 Enlarged structural diagram at point D; Figure 11 For the present invention Figure 5 Enlarged structural diagram at point E; Figure 12 For the present invention Figure 5 Enlarged structural diagram at point F; Figure 13 For the present invention Figure 6 Enlarged structural diagram at point G in the middle.

[0018] In the diagram: 1. Movable base; 2. Lifting platform; 3. Cable chain body; 10. Fixed frame; 11. Rotating sleeve; 12. First fixed plate; 13. Fixed rod; 14. Rotating block; 15. Limiting plate; 16. Transmission plate; 17. Guide groove; 19. Fixed push rod; 20. Fixed sleeve rod; 21. First return spring; 22. Guide limiting block; 23. Second fixed plate; 24. First fixed connecting frame; 25. First fixed sleeve block; 26. Guide block; 27. Roller; 28. Second fixed connecting frame; 29. ​​Second fixed sleeve block; 30. Fixed block; 31. Mounting groove; 32. Guide rod limit; 33. Pressing moving plate; 34. Second return spring; 35. Positioning rod; 36. Pressing rod; 37. Positioning block; 38. Positioning box. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, a mobile lifting platform and method with a drag chain tension adjustment structure includes a mobile base 1; the top of the mobile base 1 is connected to the bottom of the lifting platform 2, the front end of the mobile base 1 is fixedly connected to one end of the drag chain body 3, the front end of the lifting platform 2 is fixedly connected to the other end of the drag chain body 3, and an automatic tension adjustment and removal mechanism is provided between the lifting platform 2 and the drag chain body 3. The tension automatic adjustment and dismantling mechanism includes a fixed frame 10, which is located inside the cable chain body 3. Three sets of rotating sleeves 11 are fitted around the outside of the fixed frame 10, and the fixed frame 10 is rotatably connected to the rotating sleeves 11. The outer side of the rotating sleeves 11 abuts against the top of the inner wall of the cable chain body 3. The rotating sleeves 11 are circular tubes. The front end of the fixed frame 10 is fixedly connected to the rear end of the first fixed plate 12, and the front end of the first fixed plate 12 is fixedly connected to the rear end of the fixed rod 13. A rotating block 14 is fitted around the outside of the fixed rod 13, and the fixed rod 13 is rotatably connected to the rotating block 14. The rotating block 14 is circular. The front end of the cable chain body 3 is provided with... The transmission plate 16 has a guide groove 17 inside, which is sleeved on the outside of the rotating block 14 and slidably connected to the rotating block 14. Limit plates 15 are also provided at the front and rear ends of the outer side of the fixed rod 13 near the front and rear ends of the transmission plate 16, and the outer side of the fixed rod 13 is fixedly connected to the inner wall of the limit plate 15. Fixed push rods 19 are also provided at the upper and lower ends of the left side of the transmission plate 16, and the left side of the transmission plate 16 is fixedly connected to the right side of the fixed push rod 19. A fixed sleeve rod 20 is sleeved on the outer side of the left side of the fixed push rod 19. The fixed push rod 19 is a circular rod design, and the fixed push rod... A fixed sleeve rod 20 is slidably connected to rod 19. The left end of the fixed sleeve rod 20 is fixedly connected to the right end of the second fixed plate 23. A first return spring 21 is provided inside the fixed sleeve rod 20. The left end of the first return spring 21 is fixedly connected to the left end of the inside of the fixed sleeve rod 20, and the right end of the first return spring 21 is fixedly connected to the left end of the fixed push rod 19. Guide limiting blocks 22 are also provided at both ends of the fixed push rod 19 near the left side. The outer side of the fixed push rod 19 is fixedly connected to one end of the guide limiting block 22, and the other end of the guide limiting block 22 is inserted into the inner wall of the fixed sleeve rod 20. The fixed sleeve rod 20 is dynamically connected; the bottom end of the fixed frame 10 is fixedly connected to the top end of the first fixed connecting frame 24, the rear end of the first fixed connecting frame 24 is fixedly connected to the front end of the first fixed sleeve block 25, the rear end of the first fixed sleeve block 25 is sleeved on the outside of the guide block 26, and the first fixed sleeve block 25 is slidably connected to the guide block 26, the guide block 26 is T-shaped; multiple sets of rollers 27 are also sleeved inside the left and right sides of the guide block 26, and the guide block 26 is rotatably connected to the rollers 27, the outer side of the rollers 27 abuts against the inner wall of the first fixed sleeve block 25, and the rollers 27 are slidably connected to the first fixed sleeve block 25, the rollers 27 are circular; During operation, if the cable chain body 3 becomes loose after prolonged use, the first return spring 21 inside the fixing sleeve 20 will automatically rebound. Since the first return spring 21 is in a contracted state at this time, when the cable chain body 3 becomes loose, the first return spring 21 automatically pops outward, pushing the fixing push rod 19 outward along the inside of the fixing sleeve 20. As the fixing push rod 19 moves outward, it will cause the guide limit block 22 to move along the inner wall of the fixing sleeve 20. The guide limit block 22 effectively prevents the fixing push rod 19 from detaching from the fixing sleeve 20 during outward movement, thus preventing disintegration of the device. Simultaneously, when the fixing push rod 19 moves... When the transmission plate 16 moves to the right, it will drive the transmission plate 16 to move horizontally to the right. When the transmission plate 16 moves horizontally to the right, it will push the fixed rod 13 and the rotating block 14 to move synchronously. During the movement, the rotating block 14 will rotate along the guide groove 17 opened in the transmission plate 16, thereby reducing friction and preventing serious wear. At the same time, the limiting plate 15 on the outside of the fixed rod 13 wraps around the transmission plate 16 and the rotating block 14, thereby simultaneously activating the limiting effect on the transmission plate 16 and the rotating block 14, preventing the rotating block 14 and the transmission plate 16 from moving back and forth. At the same time, when the rotating block 14 moves along the guide groove 17... When in motion, the guide chute 17 is designed to gradually rise, causing the rotating block 14 and the fixed rod 13 to move upwards. As the fixed rod 13 moves upwards, it simultaneously moves the first fixed plate 12 and the fixed frame 10 upwards. When the fixed frame 10 moves upwards, it synchronously moves the rotating sleeve 11 upwards, thus lifting the drag chain body 3 upwards and tightening it to prevent loosening. Furthermore, as the drag chain body 3 moves, the rotating sleeve 11 rotates against the inner wall of the drag chain body 3. Simultaneously, as the rotating sleeve 11 rotates, it moves along... The outer side of the fixed frame 10 rotates, thereby reducing friction and improving the protection of the drag chain body 3. When the fixed frame 10 moves, it will simultaneously drive the first fixed connecting frame 24 and the first fixed sleeve block 25 to move upward. When the first fixed sleeve block 25 moves upward, it will move along the outer side of the guide block 26. During the movement, the first fixed sleeve block 25 will be in contact with the roller 27 but not with the outer side of the guide block 26. Thus, the movement of the first fixed sleeve block 25 drives the roller 27 to rotate along the inner wall of the guide block 26 to reduce friction and wear. The second fixed plate 23 is used to fix and support the position of the fixed sleeve rod 20.

[0021] Example 2 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 10 Figure 11 and Figure 12 As shown, in contrast to Embodiment 1 as another implementation of the present invention, the left end of the second fixing plate 23 is fixedly connected to the right end of the second fixing connecting frame 28, the rear end of the second fixing connecting frame 28 is fixedly connected to the front end of the second fixing sleeve block 29, the rear end of the second fixing sleeve block 29 is inserted outside the fixing block 30, and the second fixing sleeve block 29 is slidably connected to the fixing block 30. The inner wall of the second fixing sleeve block 29 is square. The rear end of the fixing block 30 is fixedly connected to the front end of the lifting platform 2. The left and right sides of the fixing block 30 are also provided with mounting grooves 31, and the inside of the mounting grooves 31 is fixedly connected to the guide rod limit 32. A pressing and moving plate 33 is sleeved on the outer side, and the pressing and moving plate 33 is slidably connected to the guide rod limit 32. The guide rod limit 32 is a circular rod design. Positioning inserts 35 are also provided at the upper and lower ends of the side of the pressing and moving plate 33. The side of the pressing and moving plate 33 is fixedly connected to one end of the positioning insert 35, and the other end of the positioning insert 35 is inserted into the second fixed sleeve 29. The positioning insert 35 is slidably connected to the second fixed sleeve 29, and the other end of the positioning insert 35 is a bevel design. The side of the pressing and moving plate 33 is fixedly connected to the pressing rod 36. A second return spring 34 is sleeved on the outer side of the guide rod limit 32. One end of the return spring 34 is fixedly connected to the inner wall of the mounting groove 31, and the other end of the second return spring 34 is fixedly connected to the pressing moving plate 33; the rear end of the guide block 26 is fixedly connected to the front end of the positioning insert 37, the rear end of the positioning insert 37 is inserted into the positioning box 38, and the positioning insert 37 is slidably connected to the positioning box 38, the rear end of the positioning box 38 is fixedly connected to the front end of the lifting platform 2, and the inner wall of the positioning box 38 is square; S1: When the drag chain body 3 becomes loose, the first return spring 21 inside the fixed sleeve rod 20 will automatically pop out, pushing the fixed push rod 19 to move outward. When the transmission plate 16 moves, the guide groove 17 on the transmission plate 16 will move along the outside of the rotating block 14. Since the guide groove 17 is designed to gradually rise, the rotating block 14 will drive the fixing rod 13 and the first fixing plate 12 to move upward simultaneously under the influence of the guide groove 17. When the first fixing plate 12 moves upward, it will drive the fixing frame 10 and the rotating sleeve 11 to move upward simultaneously. The rotating sleeve 11 will push against the inner wall of the drag chain body 3 and move upward, thereby maintaining a taut state. S2: When the fixed frame 10 moves, it will drive the first fixed connecting frame 24 and the first fixed sleeve block 25 to move upward at the same time. When the first fixed sleeve block 25 moves, it will move along the outside of the guide block 26 and the first fixed sleeve block 25 will move against the outside of the roller 27, thereby driving the roller 27 to rotate along the inside of the guide block 26 to reduce friction. S3: When removing, press the pressing rods 36 on both sides of the fixing block 30 inward, which will drive the pressing moving plate 33 and the positioning rod 35 to move inward at the same time, and squeeze the second reset spring 34 to retract and move along the outside of the guide rod limit 32 until the positioning rod 35 is removed from the inside of the second fixing sleeve 29. This will cancel the limiting effect on the second fixing sleeve 29, thereby pulling the second fixing connecting frame 28 outward, and driving the second fixing sleeve 29 to move outward along the outside of the fixing block 30 until it is removed. S4: The second fixed connecting bracket 28 moves outward, which in turn drives the guide block 26 to move outward. When the guide block 26 moves outward, it will drive the positioning insert 37 to move outward along the inside of the positioning box 38 until it is completely removed from the inside of the drag chain body 3. During operation, the pressing rods 36 on both sides of the fixing block 30 are pressed inward simultaneously. When the pressing rods 36 are pressed, the pressing moving plate 33 will move along the outside of the guide rod limit 32 into the mounting groove 31. During the movement of the pressing moving plate 33, the second return spring 34 will be compressed and retracted. Similarly, when the pressing moving plate 33 moves inward, the positioning insert 35 will move inward along the inside of the second fixing sleeve 29 until it is completely disengaged from the inside of the second fixing sleeve 29. Then, the second fixing connecting bracket 28 is pulled outward, which will move the second fixing sleeve 29 outward along the outside of the fixing block 30 until it is completely disengaged. At the same time, the second fixing connecting bracket 28 will move the positioning insert 37 at the rear end of the guide block 26 outward along the inside of the positioning box 38 until it is completely disengaged and removed, thus facilitating subsequent inspection and maintenance. During installation, the second fixing sleeve 29 only needs to be aligned with the fixing block 30 and inserted. During the insertion of the fixing block 29 along the outside of the fixing block 30, it will contact the positioning rod 35 and continue to apply a pushing force. Since the other end of the positioning rod 35 is designed with a bevel, the bevel of the positioning rod 35 contacts the second fixing block 29. As the second fixing block 29 continues to move, it will squeeze the positioning rod 35 inward to retract, and drive the pressing moving plate 33 to squeeze the second return spring 34 outside the guide rod limit 32 to retract until the second fixing block 29 is fully inserted into the outside of the fixing block 30. Then the second fixing block 29 will release the pushing force applied to the positioning rod 35, and the second return spring 34 will automatically rebound, driving the pressing moving plate 33 and the positioning rod 35 to return to their original positions along the outside of the guide rod limit 32. This will drive the positioning rod 35 to be inserted into the inside of the second fixing block 29 for fixation. At the same time, when the second fixing block 29 is aligned with the fixing block 30 for insertion, the positioning block 37 will be aligned with the inside of the positioning box 38 for insertion until the installation is completed.

[0022] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A mobile lifting platform and method with a drag chain tension adjustment structure, comprising a mobile base (1); characterized in that: The top of the movable base (1) is connected to the bottom of the lifting platform (2), the front end of the movable base (1) is fixedly connected to one end of the drag chain body (3), the front end of the lifting platform (2) is fixedly connected to the other end of the drag chain body (3), and an automatic tension adjustment and removal mechanism is provided between the lifting platform (2) and the drag chain body (3). The tension automatic adjustment and removal mechanism includes a fixed frame (10), which is located inside the cable chain body (3). Three sets of rotating sleeves (11) are sleeved on the outside of the fixed frame (10), and the fixed frame (10) is rotatably connected to the rotating sleeves (11). The outside of the rotating sleeves (11) abuts against the top of the inner wall of the cable chain body (3). The front end of the fixed frame (10) is fixedly connected to the rear end of the first fixed plate (12). The front end of the first fixed plate (12) is fixedly connected to the rear end of the fixed rod (13). A rotating block (14) is sleeved on the outside of the fixed rod (13), and the fixed rod (13) is rotatably connected to the rotating block (14).

2. The mobile lifting platform and method with a drag chain tension adjustment structure according to claim 1, characterized in that: The front end of the drag chain body (3) is provided with a transmission plate (16), and a guide groove (17) is provided inside the transmission plate (16). The guide groove (17) is sleeved on the outside of the rotating block (14), and the rotating block (14) is slidably connected to the guide groove (17). Limiting plates (15) are also provided at the front and rear ends of the outer side of the fixed rod (13) near the front and rear ends of the transmission plate (16), and the outer side of the fixed rod (13) is fixedly connected to the inner wall of the limiting plate (15).

3. The mobile lifting platform and method with a drag chain tension adjustment structure according to claim 2, characterized in that: The upper and lower ends of the left side of the transmission plate (16) are also provided with fixed push rods (19), and the left side of the transmission plate (16) is fixedly connected to the right side of the fixed push rod (19). A fixed sleeve rod (20) is sleeved on the outer side of the left side of the fixed push rod (19), and the fixed push rod (19) is slidably connected to the fixed sleeve rod (20). The left side of the fixed sleeve rod (20) is fixedly connected to the right side of the second fixed plate (23).

4. The mobile lifting platform and method with a drag chain tension adjustment structure according to claim 3, characterized in that: The fixed sleeve (20) is provided with a first reset spring (21). The left end of the first reset spring (21) is fixedly connected to the left end of the fixed sleeve (20), and the right end of the first reset spring (21) is fixedly connected to the left end of the fixed push rod (19). The front and rear ends of the fixed push rod (19) near the left side are also provided with guide limit blocks (22). The outer side of the fixed push rod (19) is fixedly connected to one end of the guide limit block (22). The other end of the guide limit block (22) is inserted into the inner wall of the fixed sleeve (20), and the guide limit block (22) is slidably connected to the fixed sleeve (20).

5. A mobile lifting platform and method with a drag chain tension adjustment structure according to claim 4, characterized in that: The bottom end of the fixed frame (10) is fixedly connected to the top end of the first fixed connecting frame (24), the rear end of the first fixed connecting frame (24) is fixedly connected to the front end of the first fixed sleeve block (25), the rear end of the first fixed sleeve block (25) is sleeved on the outside of the guide block (26), and the first fixed sleeve block (25) is slidably connected to the guide block (26).

6. A mobile lifting platform and method with a drag chain tension adjustment structure according to claim 5, characterized in that: Multiple sets of rollers (27) are also fitted inside the left and right sides of the guide block (26), and the guide block (26) is rotatably connected to the rollers (27). The outer side of the rollers (27) abuts against the inner wall of the first fixed sleeve block (25), and the rollers (27) are slidably connected to the first fixed sleeve block (25).

7. A mobile lifting platform and method with a drag chain tension adjustment structure according to claim 6, characterized in that: The left end of the second fixing plate (23) is fixedly connected to the right end of the second fixing connecting frame (28). The rear end of the second fixing connecting frame (28) is fixedly connected to the front end of the second fixing sleeve (29). The rear end of the second fixing sleeve (29) is inserted on the outside of the fixing block (30), and the second fixing sleeve (29) is slidably connected to the fixing block (30). The rear end of the fixing block (30) is fixedly connected to the front end of the lifting platform (2). The left and right sides of the fixing block (30) are also provided with mounting grooves (31). The inside of the mounting groove (31) is fixedly connected to the guide rod limiter (32). Next, a pressing moving plate (33) is sleeved on the outside of the guide rod limit (32), and the guide rod limit (32) is slidably connected to the pressing moving plate (33). The upper and lower ends of the side of the pressing moving plate (33) are also provided with positioning inserts (35), and the side of the pressing moving plate (33) is fixedly connected to one end of the positioning insert (35). The other end of the positioning insert (35) is inserted into the second fixed sleeve (29), and the positioning insert (35) is slidably connected to the second fixed sleeve (29). The side of the pressing moving plate (33) is fixedly connected to the pressing rod (36).

8. A mobile lifting platform and method with a drag chain tension adjustment structure according to claim 7, characterized in that: A second reset spring (34) is sleeved on the outside of the guide rod limiter (32). One end of the second reset spring (34) is fixedly connected to the inner wall of the mounting groove (31), and the other end of the second reset spring (34) is fixedly connected to the pressing moving plate (33).

9. A mobile lifting platform and method with a drag chain tension adjustment structure according to claim 8, characterized in that: The rear end of the guide block (26) is fixedly connected to the front end of the positioning block (37). The rear end of the positioning block (37) is inserted into the positioning box (38), and the positioning block (37) is slidably connected to the positioning box (38). The rear end of the positioning box (38) is fixedly connected to the front end of the lifting platform (2).

10. A mobile lifting platform and method with a cable chain tension adjustment structure according to claim 9, comprising the mobile lifting platform with a cable chain tension adjustment structure according to any one of claims 1-9, characterized in that: The method includes the following steps: S1: When the main body of the cable chain (3) becomes loose, the first return spring (21) inside the fixed sleeve (20) will automatically pop out and push the fixed push rod (19) to move outward. When the fixed push rod (19) moves outward, it will push the transmission plate (16) to move parallel to the right. When the transmission plate (16) moves, the guide groove (17) opened on the transmission plate (16) will move along the outside of the rotating block (14). Since the guide groove (17) is designed to gradually rise, the rotating block (14) will be affected by the guide groove (17) and drive the fixed rod (13) and the first fixed plate (12) to move upward at the same time. When the first fixed plate (12) moves upward, it will drive the fixed frame (10) and the rotating sleeve (11) to move upward at the same time. The rotating sleeve (11) will push against the inner wall of the main body of the cable chain (3) and move upward, thus maintaining a taut state. S2: When the fixed frame (10) moves, it will drive the first fixed connecting frame (24) and the first fixed sleeve (25) to move upward at the same time. When the first fixed sleeve (25) moves, it will move along the outside of the guide block (26), and the first fixed sleeve (25) will move against the outside of the roller (27), thereby driving the roller (27) to rotate along the inside of the guide block (26) to reduce friction. S3: When removing, press the pressing rods (36) on both sides of the fixing block (30) inward, which will drive the pressing moving plate (33) and the positioning rod (35) to move inward at the same time, and squeeze the second reset spring (34) along the outside of the guide rod limit (32) to retract and move until the positioning rod (35) is removed from the inside of the second fixing sleeve (29). Then the limiting effect on the second fixing sleeve (29) will be canceled, thereby pulling the second fixing connecting frame (28) outward, and driving the second fixing sleeve (29) to move outward along the outside of the fixing block (30) until it is removed; S4: The second fixed connecting frame (28) moves outward, and at the same time drives the guide block (26) to move outward. When the guide block (26) moves outward, it will drive the positioning insert (37) to move outward along the inside of the positioning box (38) until it is completely removed from the inside of the drag chain body (3).

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