Adjustable disc rope device
By designing an adjustable rope coiling device, utilizing a drum lifting drive mechanism and a clamping rotation mechanism, the problem of low adaptability of existing devices is solved, enabling the adaptation of multiple drum specifications and convenient drum replacement, thereby improving operating efficiency and equipment maintenance convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO PORT INT CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-08-04
AI Technical Summary
Existing wire rope coiling devices cannot flexibly adjust the height of the drum clamping structure, resulting in low adaptability, difficulty in adapting to various drum specifications, and inconvenience for drum replacement and equipment maintenance.
An adjustable rope coiling device is designed. Through a drum lifting drive mechanism and a drum clamping rotation mechanism, the height and position of the drum clamping center can be flexibly adjusted to adapt to drums of various specifications. The horizontally movable wire roller support plate facilitates drum replacement and equipment maintenance.
It achieves precise adaptation to different specifications of drums, simplifies the drum replacement process, improves operational convenience, extends the service life of the equipment, and reduces maintenance costs.
Smart Images

Figure CN224590609U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rope coiling devices, specifically relating to an adjustable rope coiling device. Background Technology
[0002] As a key hub for water and land transportation, ports play an extremely important role in trade, undertaking multiple core functions such as cargo loading and unloading, transshipment, and warehousing.
[0003] Currently, in port operations, wire ropes, as key load-bearing and traction components, are widely used in various lifting equipment, loading and unloading machinery, and traction devices to handle cargo of varying weights and volumes, such as containers, steel, and ore. Furthermore, the required wire rope diameter and length vary significantly depending on the specific operational scenario and cargo handling needs. For example, when lifting large containers, thick-diameter, high-strength wire ropes are required to ensure safety; while thinner wire ropes are used for lifting lighter cargo or assisting in equipment traction. Therefore, when winding various types of wire ropes in port operations, it is often necessary to select drums of different diameters and lengths.
[0004] However, most wire rope coiling devices used in ports are fixed structures, which cannot flexibly adjust the height of the drum clamping structure. Therefore, on the one hand, they can only be used with a few specific drum specifications. When a few special drum specifications are required for wire rope coiling operations, the height deviation between the drum axis and the center line of the drum clamping structure is too large, making it difficult to guarantee the coiling quality. In some cases, manual coiling operations are even required, which consumes a lot of manpower and time and seriously affects work efficiency. On the other hand, it is inconvenient for operators to replace the coiled drum and to maintain the equipment. Utility Model Content
[0005] The purpose of this utility model is to address the problems of low adaptability, inconvenience in drum replacement and equipment adjustment in existing wire rope coiling devices, and to propose and design an adjustable coiling device that can overcome the above problems, adapt to drums of various specifications, and facilitate operators in loading, unloading and maintenance of the drums and the equipment.
[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: an adjustable rope coiling device, comprising a base frame, a supporting column in the middle of the base frame, and a top frame hinged to the upper end of the supporting column; a drum lifting drive mechanism is provided between the rear end of the top frame and the rear end of the base frame; a drum clamping and rotating mechanism is provided at the front end of the top frame, and a wire roller support plate is provided below the drum clamping and rotating mechanism; the wire roller support plate is horizontally slidably installed at the front end of the base frame, and the horizontal sliding direction of the wire roller support plate is parallel to the axial direction of the workpiece clamped by the drum clamping and rotating mechanism. At this time, since the top frame and the drum clamping and rotating mechanism fixed at the top frame in this utility model can rotate under the action of the drum lifting and driving mechanism, the height of the clamping center of the drum clamping and rotating mechanism can be flexibly adjusted, thereby adapting to drums of various specifications and meeting the requirements of various wire rope coiling. At the same time, by raising the height of the drum clamping and rotating mechanism and the horizontally movable wire roller support plate, it is convenient for the operator to move the wound drum horizontally, so that the operator can remove the drum from the drum lifting and driving mechanism, thereby facilitating the operator to perform drum replacement operations. In addition, by raising the height of the drum clamping and rotating mechanism, it is also convenient for the operator to maintain and repair the equipment.
[0007] Furthermore, the drum clamping and rotating mechanism includes an active top shaft and a manual tensioning shaft. The middle part of the active top shaft is rotatably mounted on the left end of the top frame, and a rotary drive is connected to the left end of the active top shaft. A drum mating part one is provided on the right end of the active top shaft. The middle part of the manual tensioning shaft is horizontally slidably mounted on the right end of the top frame, and a drum mating part two is rotatably mounted on the left end of the manual tensioning shaft. The drum mating part two is arranged opposite to the drum mating part one. A manual sliding drive is provided on the right end of the manual tensioning shaft. At this point, when the drum to be wound with the wire rope is placed between the active top shaft and the manual tensioning shaft, the manual sliding drive can be operated manually first, and the manual tensioning shaft can be driven to approach the active top shaft until the drum mating part one on the right end of the active top shaft and the drum mating part two on the left end of the manual tensioning shaft are both clamped to the drum; then the rotation drive is started, and the active top shaft is rotated. At this time, since the drum is clamped by the drum mating part one and the drum mating part two, the drum will rotate together with the active top shaft, and complete the corresponding rope winding and coiling operations during the rotation.
[0008] Furthermore, a fixed sleeve is fixedly installed on the right end of the top frame. The sleeve wall has a limit hole, and a limit pin is threaded into the limit hole. The manual tensioning shaft is horizontally slidably installed inside the fixed sleeve. The outer wall of the manual tensioning shaft is provided with a limit groove. The limit pin passes through the limit hole from the outside to the inside and is inserted into the limit groove. A threaded hole is opened at the right end of the manual tensioning shaft. The manual sliding drive includes a manual crank, which is fixedly connected to a threaded rod. The left end of the threaded rod is threaded into the threaded hole, and the right end of the threaded rod is rotatably connected to the fixed sleeve. At this point, when the position of the manual tensioning shaft needs to be adjusted, the limiting pin can be moved upward first, creating a gap between the bottom of the limiting pin and the bottom of the limiting groove. This gap reduces the friction between the limiting pin and the manual tensioning shaft. Next, the manual crank is rotated, controlling the threaded rod to rotate. Since the threaded rod is rotatably mounted in the fixed sleeve via bearings and other components, and is threadedly connected to the manual tensioning shaft, the manual tensioning shaft is constrained by the limiting pin located in the limiting groove. The manual tensioning shaft will move linearly with the rotation of the threaded rod, thereby causing the drum mating part to move horizontally to tighten or loosen the drum. Conversely, once the position of the manual tensioning shaft is adjusted, the limiting pin can be rotated in the opposite direction, causing it to move downward until its end abuts against the bottom of the limiting groove, thus tightening the manual tensioning shaft.
[0009] Furthermore, an auxiliary frame is fixedly connected to the side wall of the active top shaft. The auxiliary frame has at least two insertion holes along the direction away from the active top shaft. A lever is inserted into one of the insertion holes, and the lever constrains the end plate at the edge of the drum located between the active top shaft and the manual tensioning shaft. Moreover, in practical applications, the position of the lever can be flexibly selected according to the size of the drum used; that is, the lever can be inserted into the insertion hole at different positions depending on the size of the drum used.
[0010] Furthermore, the rotary drive includes a winding motor fixedly mounted on the top frame. The output shaft of the winding motor is connected to the drive top shaft, and the transmission connection structure between the two can be any of the common transmission connection structures such as coupling, gear transmission structure, and belt transmission structure.
[0011] Furthermore, the drum lifting drive mechanism includes a lifting platform, with its fixed end hinged to the rear end of the base frame and its power output end hinged to the rear end of the top frame. Through the relative movement between the power output end and the fixed end of the lifting platform, the top frame is driven to rotate around its hinge point with the base frame, thereby realizing the lifting movement of the drum clamping and rotating mechanism and the drum it clamps. Moreover, in practical applications, the lifting platform can be any of the common ball screw jacks, bevel gear jacks, worm gear jacks, or hand-cranked jacks.
[0012] Furthermore, the drum lifting drive mechanism includes a power cylinder. The cylinder body of the power cylinder is hinged to the rear end of the base frame, and the piston rod end of the power cylinder is hinged to the rear end of the top frame. The movement of the piston rod within the power cylinder body drives the top frame to rotate around its hinge point with the base frame, thereby realizing the lifting and lowering movement of the drum clamping rotation mechanism and the drum it clamps. Moreover, in practical applications, the power cylinder can be selected from either a servo pneumatic cylinder or a servo hydraulic cylinder.
[0013] Furthermore, a limit switch is installed in the middle of the support column. The sensing element of the limit switch can abut against the bottom surface of the top frame to limit the rotation angle of the top frame, prevent the equipment from being damaged due to excessive stroke, and thus improve the safety and reliability of the equipment.
[0014] Furthermore, the bottom of the base frame is provided with a forklift boot opening, which ensures that the present invention can be lifted by a forklift for large-scale movement.
[0015] Furthermore, a wire guide is installed at the rear end of the top frame, and the wire guide can be used in conjunction with the drum clamping and rotating mechanism to effectively guide the wire rope into the drum, thereby improving the efficiency and quality of rope winding.
[0016] As can be seen from the above technical solutions, this utility model has the following advantages: First, the top frame and drum clamping and rotating mechanism in this utility model can flexibly adjust their height under the action of the lifting drive mechanism, accurately adapting to drums of different specifications and fully meeting the coiling needs of various wire ropes; Second, by raising the height of the drum clamping and rotating mechanism and cooperating with the horizontally sliding wire roller support plate, this utility model can easily achieve the horizontal displacement of the drum after winding, greatly simplifying the process of disassembling and replacing the drum from the drive mechanism and significantly improving the ease of operation; At the same time, this utility model can facilitate operators to maintain and repair the equipment by adjusting the height of the drum clamping and rotating mechanism, reducing maintenance difficulties caused by space limitations, effectively extending the service life of the equipment, reducing maintenance costs, and providing an efficient, flexible and reliable solution for wire rope coiling operations. Attached Figure Description
[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 1 (Limit pin not shown);
[0019] Figure 2This is a structural diagram illustrating a specific embodiment of the present invention. Figure 2 (Limit pin not shown).
[0020] In the diagram: 1. Forklift shoe opening; 2. Wire roller support plate; 3. Base frame; 4. Support rod; 5. Support leg; 6. Bearing; 7. Support column; 8. Drum mating part one; 9. Active top shaft; 10. Rotary drive component; 11. Auxiliary frame; 12. Insertion hole; 13. Cable guide; 14. Lever; 15. Drum lifting drive mechanism; 16. Crossbeam; 17. Longitudinal beam; 18. Top frame; 19. Limiting hole; 20. Electrical control box; 21. Manual crank handle; 22. Threaded rod; 23. Manual sliding drive component; 24. Fixed sleeve; 25. Limiting long groove; 26. Manual tensioning shaft; 27. Drum mating part two; 28. Limit switch; 29. Winding motor; 30. Control button box. Detailed Implementation
[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0022] like Figure 1 , Figure 2 As shown, this utility model provides an adjustable rope coiling device, which includes a base frame 3. The bottom of the base frame 3 is provided with support legs 5 and a forklift boot 1. When it is necessary to move this device, the forklift boot 1 can be used to lift the utility model for a wide range of movement.
[0023] The top of the base frame 3 is arranged sequentially from front to back as a wire roller support plate 2, a support column 7, and a drum lifting drive mechanism 15. The wire roller support plate 2 is horizontally slidably installed in a sliding hole at the front end of the base frame 3. A support rod 4 is fixedly installed at each of the left and right ends of the upper surface of the wire roller support plate 2. A high-load bearing 6 is fixedly installed at each of the front and rear ends of the support rod 4, with the outer ring of the bearing 6 abutting against the upper surface of the base frame 3. At this time, the drum used for rope winding can be placed on the wire roller support plate 2, and the bearings 6 at the two support rods 4 support the wire roller support plate 2 and the drum. After the drum above the wire roller support plate 2 completes the rope winding operation, it can be easily separated from the drive shaft 9 by pulling the wire roller support plate 2, facilitating drum replacement and equipment adjustment. Furthermore, during the pulling process of the wire rope support plate 2, compared with the traditional method of directly dragging the drum, this invention fully utilizes the relative rolling between the inner and outer rings of the bearing 6, greatly reducing the frictional force that needs to be overcome during the pulling process. This significantly reduces the labor intensity of the operators, while also reducing wear between the drum and the base frame 3, extending the service life of the equipment and the integrity rate of the drum. In addition, the high load capacity of the bearing 6 can stably support the heavy-duty drum, ensuring the stability of the wire rope support plate 2 during the sliding process and avoiding problems such as misalignment of the wire rope or drum tipping due to shaking.
[0024] The upper end of the supporting column 7 is hinged to a top frame 18, which has a forward-opening U-shaped structure. The front ends of the longitudinal beams 17 at both ends of the top frame 18 are jointly equipped with a drum clamping and rotating mechanism. Specifically, in this embodiment, the front ends of the longitudinal beams 17 at both ends of the top frame 18 are each equipped with a fixing sleeve 24. The wall of the fixing sleeve 24 located at the right end of the top frame 18 passes through a limit hole 19, and the limit hole 19 is internally threaded with a limit pin. The drum clamping and rotating mechanism includes an active top shaft 9 and a manual tensioning shaft 26. The active top shaft 9 is rotatably mounted at the fixed sleeve 24 of the longitudinal beam 17 on the left end of the top frame 18 via a bearing 6. The left end of the active top shaft 9 is connected to a rotary drive component 10, which includes a winding motor 29 fixedly mounted on the top frame 18. The output shaft of the winding motor 29 is connected to the active top shaft 9, and the transmission connection structure between them can be any of the common transmission connection structures such as a coupling, gear transmission, or belt transmission. The right end of the active top shaft 9 is provided with a tapered drum mating part 8, which rotates together with the active top shaft 9.
[0025] The manual tensioning shaft 26 is horizontally slidably mounted in the fixed sleeve 24 of the longitudinal beam 17 at the right end of the top frame 18. The outer wall of the manual tensioning shaft 26 is provided with a limiting groove 25, the length direction of which is parallel to the length direction of the manual tensioning shaft 26. The limiting pin passes through the limiting hole 19 from the outside to the inside and is inserted into the limiting groove 25, abutting against the bottom of the groove. A tapered drum fitting part 27 is rotatably mounted on the left end of the manual tensioning shaft 26 via a bearing 6, and this second drum fitting part 27 is opposite to the first drum fitting part 8. A threaded hole is provided on the right end of the manual tensioning shaft 26, and a manual sliding drive component 23 is provided at the threaded hole. The manual sliding drive component 23 includes a manual crank 21, which is fixedly connected to a threaded rod 22. The left end of the threaded rod 22 is threadedly connected to a threaded hole, and the right end of the threaded rod 22 is rotatably connected to a fixed sleeve 24 via a bearing 6.
[0026] A control button box 30 is installed at the upper middle part of the longitudinal beam 17 at the left or right end of the top frame 18. The control button box 30 is electrically connected to the electrical control box 20 of the entire device. The lower middle part of the longitudinal beam 17 at both ends of the top frame 18 is hinged to the upper end of the corresponding support column 7. A cable guide 13 is installed on the upper part of the crossbeam 16 at the rear end of the top frame 18. The cable guide 13 guides the wire rope to be coiled, thereby improving the efficiency and quality of rope coiling. Moreover, the cable guide 13 can directly adopt conventional models and specifications available on the market, such as the GP30A type bare rod cable guide produced by Shanxi Jiangchuan Machinery Co., Ltd. The rear end of the crossbeam 16 at the rear end of the top frame 18 is connected to the drum lifting drive mechanism 15 at the base frame 3, so that the top frame 18 can rotate around its hinge axis with the supporting column 7 under the action of the drum lifting drive mechanism 15. This allows for height adjustment of the drum clamping and rotating mechanism at the top frame 18, thus adapting to various drum specifications and meeting the requirements for coiling various wire ropes. Moreover, in this embodiment, the drum lifting drive mechanism 15 can be any of the commonly available lifting mechanisms or power cylinders, such as ball screw jacks, bevel gear jacks, worm gear jacks, hand-cranked jacks, servo cylinders, servo hydraulic cylinders, etc. Furthermore, when employing a lifting mechanism, the fixed end of the lifting mechanism can be hinged to the rear end of the base frame 3, and the power output end of the lifting mechanism can be hinged to the rear end of the top frame 18. Then, through the relative movement between the power output end and the fixed end of the lifting mechanism, the top frame 18 is driven to rotate around its hinge point with the base frame 3, thereby realizing the lifting and lowering movement of the drum clamping and rotating mechanism and the drum it clamps. When employing a power cylinder mechanism, the cylinder body of the power cylinder can be hinged to the rear end of the base frame 3, and the piston rod end of the power cylinder can be hinged to the rear end of the top frame 18. Through the movement of the piston rod within the cylinder body of the power cylinder, the top frame 18 is driven to rotate around its hinge point with the base frame 3, thereby realizing the lifting and lowering movement of the drum clamping and rotating mechanism and the drum it clamps.
[0027] Furthermore, as a preferred embodiment, this invention may also include a limit switch 28 in the middle of the supporting column 7. The limit switch 28 is electrically connected to the electrical control box 20 of the entire device, and the sensing element of the limit switch 28 can abut against the bottom surface of the top frame 18. In this way, this invention can use the limit switch 28 to sense the position of the top frame 18 and, upon receiving a signal, feed it back to the electrical control box 20 to limit the rotation angle of the top frame 18, preventing damage to the equipment due to excessive travel, thereby improving the safety and reliability of the equipment.
[0028] An auxiliary frame 11 is fixedly connected to the side wall of the active top shaft 9. At least two insertion holes 12 are provided on the auxiliary frame 11 in a direction away from the active top shaft 9. A lever 14 is inserted into one of the insertion holes 12, and the lever 14 constrains the end plate of the drum edge located between the active top shaft 9 and the manual tensioning shaft 26. Furthermore, in practical applications, the position of the lever 14 can be flexibly selected according to the size of the drum used; that is, the lever 14 can be inserted into the insertion hole 12 at different positions depending on the size of the drum used.
[0029] Based on this, when using this utility model for rope coiling, the position of the manual tensioning shaft 26 can be adjusted first. At this time, the limiting pin can be moved upward to create a certain gap between the bottom of the limiting pin and the bottom of the limiting groove 25, thereby reducing the friction between the limiting pin and the manual tensioning shaft 26. Then, the manual crank 21 is rotated, and the threaded rod 22 is controlled to rotate under the drive of the manual crank 21. Since the threaded rod 22 is rotatably installed in the fixed sleeve 24 through the bearing 6 and other components, and the threaded rod 22 is threadedly connected to the manual tensioning shaft 26, the manual tensioning shaft 26 is constrained in the circumferential direction by the limiting pin located in the limiting groove 25. The manual tensioning shaft 26 will move linearly with the rotation of the threaded rod 22, thereby driving the second drum mating part 27 to move horizontally, so as to widen the horizontal distance between the second drum mating part 27 and the first drum mating part 8, until the gap in the middle can accommodate a drum of the corresponding size. Then, the drum is placed between the second drum mating part 27 and the first drum mating part 8. Next, the drum lifting drive mechanism 15 is controlled to adjust the height of the drum mating part 1 8 and the drum mating part 2 27 until they are aligned with the axis of the placed drum. Subsequently, the manual crank handle 21 is rotated in the opposite direction to control the threaded rod 22 to rotate in the opposite direction. At this time, the manual tensioning shaft 26 will move linearly with the rotation of the threaded rod 22, and drive the drum mating part 27 to move horizontally towards the drum mating part 8, so as to reduce the horizontal distance between the drum mating part 27 and the drum mating part 8, until both the drum mating part 27 and the drum mating part 8 are inserted into the through holes at both ends of the drum to achieve the effect of clamping the drum. Then, the limiting pin is rotated in the opposite direction to move the limiting pin downward until its end abuts against the bottom of the limiting groove 25, thereby tightening the manual tensioning shaft 26. Finally, the rotary drive 10 and the wire guide 13 are started, and the drum is driven to rotate with the active top shaft 9 to perform the rope winding action. At the same time, the wire guide 13 can effectively guide the wire rope into the drum, thereby improving the rope winding efficiency and quality.
[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An adjustable rope coiling device, comprising a base frame (3), wherein a supporting column (7) is provided in the middle of the base frame (3); characterized in that, A top frame (18) is hinged to the upper end of the support column (7); a drum lifting drive mechanism (15) is provided between the rear end of the top frame (18) and the rear end of the base frame (3); a drum clamping and rotating mechanism is provided at the front end of the top frame (18), and a wire roller support plate (2) is provided below the drum clamping and rotating mechanism; the wire roller support plate (2) is horizontally slidably installed at the front end of the base frame (3), and the horizontal sliding direction of the wire roller support plate (2) is parallel to the axial direction of the workpiece clamped at the drum clamping and rotating mechanism.
2. The adjustable rope coiling device according to claim 1, characterized in that, The drum clamping and rotating mechanism includes an active top shaft (9) and a manual tensioning shaft (26). The middle part of the active top shaft (9) is rotatably mounted on the left end of the top frame (18). The left end of the active top shaft (9) is connected to a rotary drive (10). The right end of the active top shaft (9) is provided with a drum mating part one (8). The middle part of the manual tensioning shaft (26) is horizontally slidably mounted on the right end of the top frame (18). The left end of the manual tensioning shaft (26) is rotatably mounted with a drum mating part two (27). The drum mating part two (27) is arranged opposite to the drum mating part one (8). The right end of the manual tensioning shaft (26) is provided with a manual sliding drive (23).
3. The adjustable rope coiling device according to claim 2, characterized in that, A fixed sleeve (24) is fixedly installed on the right end of the top frame (18). The sleeve wall of the fixed sleeve (24) passes through a limit hole (19). A limit pin is threadedly connected to the limit hole (19). The manual tensioning shaft (26) is horizontally slidably installed in the fixed sleeve (24). A limit groove (25) is provided on the outer wall of the manual tensioning shaft (26). The limit pin passes through the limit hole (19) from the outside to the inside and is inserted into the limit groove (25). A threaded hole is opened on the right end of the manual tensioning shaft (26). The manual sliding drive component (23) includes a manual crank (21). A threaded rod (22) is fixedly connected to the manual crank (21). The left end of the threaded rod (22) is threadedly connected to the threaded hole. The right end of the threaded rod (22) is rotatably connected to the fixed sleeve (24).
4. The adjustable disc rope device of claim 2, wherein, An auxiliary frame (11) is fixedly connected to the side wall of the active top shaft (9). The auxiliary frame (11) has at least two insertion holes (12) in a direction away from the active top shaft (9). A lever (14) is inserted into one of the insertion holes (12).
5. The adjustable disc rope device of claim 2, wherein, The rotary drive (10) includes a winding motor (29) fixedly mounted on the top frame (18), and the output shaft of the winding motor (29) is connected to the drive top shaft (9) for transmission.
6. The adjustable disc rope device of claim 1, wherein, The drum lifting drive mechanism (15) includes a lifting machine, the fixed end of which is hinged to the rear end of the base frame (3), and the power output end of which is hinged to the rear end of the top frame (18).
7. The adjustable disc rope device of claim 1, wherein, The drum lifting drive mechanism (15) includes a power cylinder, the cylinder body of which is hinged to the rear end of the base frame (3), and the piston rod end of the power cylinder is hinged to the rear end of the top frame (18).
8. The adjustable disc rope device of claim 1, wherein, A limit switch (28) is provided in the middle of the support column (7), and the sensing element of the limit switch (28) can abut against the bottom surface of the top frame (18).
9. The adjustable disc rope device of claim 1, wherein, The bottom of the base frame (3) is provided with a forklift shoe opening (1).
10. The adjustable disc rope device of claim 1, wherein, The rear end of the top frame (18) is equipped with a cable tray (13).