Cable winding and unwinding device and operation method therefor, tensioning mechanism, and movable platform

Abstract

A cable winding and unwinding device (100), comprising a reel (10) and a tensioning mechanism (20). The reel (10) is used for winding a cable and is capable of winding or unwinding the cable during rotation. The tensioning mechanism (20) comprises a tensioning wheel (21) and a driving assembly (22); the tensioning wheel (21) is used for guiding the cable during rotation and enabling the cable to be in a tensioned state; the driving assembly (22) is configured to drive the tensioning wheel (21) to rotate; and the driving assembly (22) and the tensioning wheel (21) can rotate synchronously or rotate relative to each other. The tensioning mechanism (20) has a first working state and a second working state in the process of the cable winding and unwinding device (100) unwinding the cable; when the tensioning mechanism (20) is in the first working state, the driving assembly (22) drives the tensioning wheel (21) to rotate synchronously; and when the tensioning mechanism (20) is in the second working state, the tensioning wheel (21) rotates reversely relative to the driving assembly (22). In the cable unwinding process, the cable between the reel and the tensioning wheel can be prevented from being excessively tensioned, affecting the smooth unwinding of the cable, and even causing the cable to break. The present application further relates to an operation method for the cable winding and unwinding device, a tensioning mechanism, and a movable platform.

Description

Cable retracting device and operating method thereof, tensioning mechanism and movable platform Technical Field

[0001] The present application relates to the technical field of logistics equipment, and in particular to a cable retracting and releasing device and an operating method thereof, a tensioning mechanism, and a movable platform. Background Art

[0002] In the related art, after the movable platform transports the items to the destination, the items can be dropped by a cable retracting device (such as a winch).

[0003] However, there are some problems with the method of dropping and releasing through a cable retracting device. When the dropped cargo is too heavy, the cable retracting device's wire wheel may tighten the wire, causing the cable retracting device to be unable to release the wire smoothly, thus affecting the loading and releasing of the cargo.

[0004] Summary of the Invention

[0005] In view of this, the present application proposes a cable retracting and releasing device and an operating method thereof, a tensioning mechanism and a movable platform.

[0006] The cable retracting device proposed in the first aspect of the present application comprises:

[0007] a rotatable reel for winding a cable and capable of reeling in or releasing the cable when rotated; and

[0008] A tensioning mechanism, comprising a drive assembly and a rotatable tensioning wheel,

[0009] The tensioning wheel is used to guide the cable when rotating and keep the cable in a tensioned state;

[0010] The driving assembly is configured to drive the tensioning wheel to rotate, and the driving assembly and the tensioning wheel can rotate synchronously or relatively;

[0011] Wherein, the tensioning mechanism has a first working state and a second working state different from the first working state during the process of the cable retracting and releasing device releasing the cable;

[0012] When the tensioning mechanism is in the first working state, the driving assembly drives the tensioning wheel to rotate synchronously;

[0013] When the tensioning mechanism is in the second working state, the tensioning wheel can rotate in the opposite direction relative to the driving assembly.

[0014] The cable retracting device proposed in the second aspect of the present application includes:

[0015] a rotatable reel for winding a cable and capable of reeling in or releasing the cable when rotated; and

[0016] A tensioning mechanism comprising a drive assembly and a rotatable tensioning wheel

[0017] The tensioning wheel is used to guide the cable when rotating and keep the cable in a tensioned state;

[0018] The driving assembly is configured to drive the tensioning wheel to rotate;

[0019] Wherein, the driving assembly includes a transmission member, which is used to cooperate with the wire wheel transmission, so that when the wire wheel rotates, the driving assembly can be driven to rotate through the transmission member, and then the tensioning wheel can be driven to rotate.

[0020] The operating method of the cable retracting device proposed in the third aspect of the present application includes:

[0021] The reel turns to release the cable;

[0022] The driving assembly drives the tensioning wheel to rotate, so as to guide the cable and put the cable in a tensioned state, wherein the driving assembly rotates synchronously with the tensioning wheel, and the pulling force of the cable on the tensioning wheel toward the line wheel increases;

[0023] In response to the tension increasing to a critical value, the cable drives the tension wheel to rotate in the opposite direction relative to the driving assembly, so that the tension is reduced.

[0024] The tensioning mechanism proposed in the fourth aspect of the present application is applied to a cable retracting device, wherein the cable retracting device is capable of retracting or releasing a cable, and the tensioning mechanism includes:

[0025] a rotatable tensioning pulley;

[0026] A drive assembly, wherein the drive assembly is configured to drive the tensioning wheel to rotate, and the drive assembly and the tensioning wheel can rotate synchronously or relatively;

[0027] Wherein, the tensioning mechanism has a first working state and a second working state different from the first working state during the process of the cable retracting and releasing device releasing the cable;

[0028] When the tensioning mechanism is in the first working state, the driving assembly drives the tensioning wheel to rotate synchronously;

[0029] When the tensioning mechanism is in the second working state, the tensioning wheel rotates in the opposite direction relative to the driving assembly.

[0030] The movable platform proposed in the fifth aspect of this application includes:

[0031] movable subject;

[0032] The cable retracting device mentioned above;

[0033] The cable retracting device is mounted on the movable body.

[0034] It can be seen from the above technical solutions that the cable retracting and releasing device proposed in the first aspect of the present application, firstly, by setting a tensioning mechanism to tension the cable during the process of the spool unwinding, the tension of the tensioning mechanism can effectively avoid the problem that the cable is tightened on the spool, which causes the cable retracting and releasing device to fail to release the cable smoothly. Secondly, by setting the tensioning wheel to be able to rotate relative to the driving assembly, when there is a large difference between the unwinding speed of the spool and the unwinding speed of the tensioning wheel, the cable between the spool and the tensioning wheel is too tight, resulting in the tensioning force of the cable towards the spool being large (exceeding a critical value), the tensioning wheel can rotate in the opposite direction relative to the driving assembly, so that the cable between the spool and the tensioning wheel becomes loose, thereby preventing the cable between the spool and the tensioning wheel from being too tight, which affects the smooth lowering of the cable, or even causes the cable to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] FIG1 is a schematic structural diagram of a cable retracting device according to an embodiment of the present application from a first perspective;

[0037] FIG2 is a schematic structural diagram of a cable retracting device according to an embodiment of the present application from a second perspective;

[0038] FIG3 is a schematic structural diagram of a cable retracting device according to an embodiment of the present application from a third perspective;

[0039] FIG4 is a schematic diagram of the cooperation between the wire wheel and the tensioning mechanism proposed in one embodiment of the present application;

[0040] FIG5 is an exploded schematic diagram of a tensioning mechanism proposed in one embodiment of the present application;

[0041] FIG6 is a partial exploded schematic diagram of a tensioning mechanism proposed in one embodiment of the present application;

[0042] FIG7 is a schematic structural diagram of a supporting member proposed in one embodiment of the present application;

[0043] FIG8 is a schematic structural diagram of a tensioning mechanism proposed in another embodiment of the present application;

[0044] FIG9 is a schematic structural diagram of a tensioning mechanism proposed in another embodiment of the present application;

[0045] FIG10 is a schematic structural diagram of a fuse assembly according to an embodiment of the present application;

[0046] FIG11 is a cross-sectional schematic diagram of a hook mechanism and a restriction member according to an embodiment of the present application;

[0047] FIG12 is a flow chart of an operating method of a cable retracting and releasing device according to an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] As shown in Figures 1 to 4, an embodiment of the present application provides a cable retracting device 100. The cable retracting device 100 includes a rotatable reel 10 and a tensioning mechanism 20. The reel 10 is used to wind a cable 200 and can reel in or release the cable 200 when rotating. The tensioning mechanism 20 includes a tensioning wheel 21 and a drive assembly 22. The tensioning wheel 21 is rotatable and is used to guide the cable 200 and place the cable 200 in a tensioned state when rotating. The drive assembly 22 is configured to drive the tensioning wheel 21 to rotate, and the drive assembly 22 and the tensioning wheel 21 can rotate synchronously or relative to each other.

[0050] Among them, the tensioning mechanism 20 has a first working state and a second working state different from the first working state during the process of the cable taking-up and releasing device 100 releasing the cable 200. When the tensioning mechanism 20 is in the first working state, the driving component 22 drives the tensioning wheel 21 to rotate synchronously. When the tensioning mechanism 20 is in the second working state, the tensioning wheel 21 rotates in the opposite direction relative to the driving component 22.

[0051] It should be noted that the “releasing the cable” mentioned in this article is an abbreviation for “releasing the cable”, and the “reeling in the cable” is an abbreviation for “reeling in the cable”.

[0052] The cable retracting device 100 proposed in the embodiment of the present application firstly tensions the cable 200 during the process of releasing the cable from the spool 10 by setting a tensioning mechanism 20. Under the action of the tension of the tensioning mechanism 20, the problem of the cable 200 being strangled on the spool 10 and causing the cable retracting device 100 to be unable to release the cable smoothly can be effectively avoided. Secondly, by arranging the tensioning wheel 21 to rotate relative to the driving assembly 22, when there is a large difference between the pay-out speed of the spool 10 and the pay-out speed of the tensioning wheel 21, the cable 200 between the spool 10 and the tensioning wheel 21 is too tight, causing the tensioning wheel 21 to be subjected to a large pulling force (exceeding a critical value) from the cable 200 toward the spool 10, the tensioning wheel 21 can rotate in the opposite direction relative to the driving assembly 22, so that the cable 200 between the spool 10 and the tensioning wheel 21 becomes loose, thereby preventing the cable 200 between the spool 10 and the tensioning wheel 21 from being too tight and affecting the smooth lowering of the cable 200, or even causing the cable 200 to break, thereby achieving stable pay-out of the cable 200.

[0053] In one embodiment, when the tensioning mechanism 20 is in the first operating state, the tension of the cable 200 increases to the first tensioning state. Thereafter, the tensioning mechanism 20 enters the second operating state, and the cable 200 is in the second tensioning state. The tension of the cable 200 in the first tensioning state is greater than the tension of the cable 200 in the second tensioning state. It should be noted that during the process of releasing the cable from the cable retractable device 100, the first and second operating states alternate.

[0054] In one embodiment, when the tensioning mechanism 20 is in the first working state, the pay-off speed of the tensioning wheel 21 is greater than the pay-off speed of the spool 10 so that the cable 200 is in a tensioned state, and as the pay-off length of the spool 10 increases, the pulling force of the cable 200 on the tensioning wheel 21 toward the spool 10 gradually increases to a critical value, and the cable 200 drives the tensioning wheel 21 to rotate in the opposite direction relative to the driving assembly 22, and the tensioning mechanism 20 enters the second working state so that the pulling force of the cable 200 is reduced.

[0055] Among them, the pay-off speed of the tensioning wheel 21 refers to the tangential speed of the cable 200 when it leaves the tensioning wheel 21. It can be understood that since the outlet position of the cable 200 on the tensioning wheel 21 can be basically considered to be unchanged, according to V=rw, the pay-off speed of the tensioning wheel 21 can be considered to be basically unchanged. The pay-off speed of the reel 10 refers to the tangential speed of the cable 200 when it leaves the reel 10. It can be understood that as the pay-off length of the reel 10 increases, the cable 200 on the reel 10 gradually decreases, and the outlet end of the cable 200 gradually approaches the rotating shaft of the reel 10. According to V=rw, the pay-off speed of the reel 10 is gradually decreasing. Therefore, before the tension of the cable 200 on the tensioning wheel 21 toward the reel 10 gradually increases to a critical value, as the pay-off length of the reel 10 increases, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the reel 10 becomes larger and larger.

[0056] In one embodiment, the drive assembly 22 is connected to the tensioning wheel 21 via a differential mechanism 23, and the critical value includes at least the sum of the driving force applied to the tensioning wheel 21 by the differential mechanism 23 and the gravity of the load mounted on the cable 200. Specifically, the drive assembly 22 can drive the tensioning wheel 21 to rotate through the differential mechanism 23, and when the pulling force of the cable 200 on the tensioning wheel 21 toward the spool 10 gradually increases to a critical value, the differential mechanism 23 can enable the tensioning wheel 21 to rotate relative to the drive assembly 22 under the drive of the cable 200, that is, slippage is achieved between the tensioning wheel 21 and the drive assembly 22, thereby achieving the effect of slowing down the speed of the tensioning wheel 21. It should be noted that in other embodiments, the drive assembly 22 can also be directly connected to the tensioning wheel 21, and the differential mechanism 23 directly acts on the tensioning wheel 21.

[0057] In one embodiment, when the tensioning mechanism 20 is in the first working state, as the pay-off length of the spool 10 increases, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 increases to ΔV1. When the tensioning mechanism 20 enters the second working state, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 is ΔV2, wherein ΔV2 is less than ΔV1. As described above, it can be understood that before the tension of the cable 200 on the tensioning wheel 21 toward the spool 10 gradually increases to a critical value, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 gradually increases to a maximum value at the critical value. Thereafter, due to the reverse rotation of the tensioning wheel 21 relative to the drive assembly 22, the pay-off speed of the tensioning wheel 21 decreases, resulting in a decrease in the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10.

[0058] In one embodiment, ΔV2 is equal to 0. That is, the tensioning wheel 21 and the wire wheel 10 pay out the wire synchronously. It should be noted that in other embodiments, ΔV2 can be any other value smaller than ΔV1.

[0059] In one embodiment, the cable retracting device 100 further includes a differential mechanism 23 , and the driving assembly 22 is connected to the tensioning wheel 21 via the differential mechanism 23 , so that the driving assembly 22 and the tensioning wheel 21 can rotate synchronously or relatively.

[0060] As shown in Figures 5 and 6, in one embodiment, the differential mechanism 23 includes a first mating portion 231 and a second mating portion 232. The first mating portion 231 is connected to the drive assembly 22, and the second mating portion 232 is connected to the tensioning pulley 21. The drive assembly 22 drives the tensioning pulley 21 to rotate through the mating of the first mating portion 231 and the second mating portion 232. When the tensioning mechanism 20 is in the first working state, the first mating portion 231 and the second mating portion 232 cooperate to achieve synchronous rotation of the first mating portion 231 and the second mating portion 232. When the tensioning mechanism 20 is in the second working state, the second mating portion 232 can rotate in the opposite direction relative to the first mating portion 231 under the drive of the cable 200.

[0061] As shown in FIG6 , in one embodiment, the first mating portion 231 is in contact with the second mating portion 232, and an elastic member 233 is provided between the first mating portion 231 and the driving assembly 22. The elastic member 233 is configured to provide an elastic force to push the first mating portion toward the second mating portion 232, so that the first mating portion 231 can generate a driving force to rotate the second mating portion 232. The elastic member 233 may be, but is not limited to, a spring.

[0062] As shown in Figure 6, in one embodiment, the first mating portion 231 includes an insert 2311, and the second mating portion 232 includes a groove 2321. The insert 2311 is configured to at least partially fit into the groove 2321. It should be noted that the groove 2321 can be directly formed on the tensioning pulley 21. Of course, the groove 2321 can also be configured to be formed on a connecting member that is then connected to the tensioning pulley 21. The first working state refers to the state in which the tensioning mechanism 20 is operating normally, and the second working state refers to the state in which the tensioning mechanism 20 is slipping.

[0063] In a specific application, under the action of the elastic force of the elastic member 233, the insert 2311 is embedded in the groove 2321. When the drive assembly 22 rotates, the insert 2311 is driven to rotate. The part of the insert 2311 embedded in the groove 2321 applies a circumferential force to the tensioning wheel 21, thereby driving the tensioning wheel 21 and the drive assembly 22 to rotate synchronously. At this time, the side wall of the groove 2321 has a reaction force on the insert 2311. The axial component of the reaction force makes the insert 2311 have a tendency to compress the elastic member 233 to withdraw from the groove 2321, but the component force is not enough to overcome the elastic force of the elastic member 233. Therefore, the insert 2311 remains embedded in the groove 2321, and the tensioning wheel 21 and the drive assembly 22 keep rotating synchronously. When the pulling force of the cable 200 on the tensioning wheel 21 toward the reel 10 gradually increases to a critical value, the component force is sufficient to overcome the elastic force of the elastic member 233, and the insert 2311 compresses the spring and withdraws from the groove 2321, and the function of the insert 2311 is lost. Under the pulling of the cable 200, the tensioning wheel 21 is reversed relative to the driving assembly 22, and the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the reel 10 is reduced.

[0064] As shown in FIG6 , in one embodiment, the sidewalls of the groove 2321 are arcuate, and the insert 2311 is a spherical member. Of course, the insert 2311 is not limited to being a spherical member. For example, in another embodiment, the portion of the insert 2311 that fits into the groove 2321 may be hemispherical, or the outer surface of the portion of the insert 2311 that fits into the groove 2321 may be an arcuate surface. Of course, the sidewalls of the groove 2321 are not limited to being arcuate. For example, in another embodiment, the sidewalls of the groove 2321 may be inclined.

[0065] As shown in FIG6 , in one embodiment, the number of the first mating portions 231 and the number of the second mating portions 232 are both plural, and the plurality of second mating portions 232 are spaced apart along the circumference of the tensioning pulley 21, with the first mating portions 231 and the second mating portions 232 being arranged correspondingly. Of course, the number of the first mating portions 231 and the second mating portions 232 is not limited to being plural. In another embodiment, the number of the first mating portions 231 and the second mating portions 232 can also be one, and the specific number can be determined based on actual design requirements.

[0066] As shown in FIG6 , in one embodiment, the differential mechanism 23 includes a mounting seat 234 that is connected to and rotates synchronously with the drive assembly 22. The first mating portion 231 is connected to the drive assembly 22 via the mounting seat 234. The mounting seat 234 defines a mounting groove and an opening A communicating with the mounting groove. The insert 2311 and the elastic member 233 are disposed within the mounting groove, with the insert 2311 at least partially exposed from the opening A to engage with the groove 2321.

[0067] As shown in FIG. 6 , in one embodiment, a first through hole 2341 is provided in the middle of the mounting seat 234 , the mounting seat 234 is sleeved on the shaft assembly 222 through the first through hole 2341 , and a plurality of inserts 2311 are spaced around the first through hole 2341 .

[0068] As shown in FIG6 , in one embodiment, the first mating portion 231 further includes a supporting member 2312, which is disposed between the insert 2311 and the elastic member 233. The elastic member 233 pushes the insert 2311 via the supporting member 2312. It should be noted that, in another embodiment, the first mating portion 231 may not include the supporting member 2312, and the elastic member 233 may directly abut the insert 2311.

[0069] As shown in FIG7 , in one embodiment, the supporting member 2312 includes a supporting portion 2313 and a rod portion 2314. The supporting portion 2313 abuts the insert 2311, and the rod portion 2314 is connected to the supporting portion 2313. The rod portion 2314 passes through the elastic member 233. In this embodiment, the rod portion 2314 can stabilize the elastic member 233. Of course, the supporting member 2312 is not limited to the above configuration. For example, in another embodiment, the supporting member 2312 can be configured to include only the supporting portion 2313.

[0070] As shown in FIG6 , in one embodiment, the mounting base 234 includes a base body 2342 and a cover plate 2343. The base body 2342 is provided with an assembly groove. The cover plate 2343 is connected to the base body 2342 and has an opening A. During assembly, the elastic member 233 is first sleeved onto the rod portion 2314 of the supporting member 2312. The elastic member 233 and the supporting member 2312 are then placed together into the assembly groove. The insert 2311 is then inserted into the assembly groove. The cover plate 2343 is then fastened to the base body 2342.

[0071] It should be noted that the first engaging portion 231 and the second engaging portion 232 are not limited to the above-described embodiment. For example, in another embodiment, as shown in FIG8 , the first engaging portion 231 includes a first friction member 2315, and the second engaging portion 232 includes a second friction member 2322, with the second friction member 2322 abutting against the first friction member 2315. That is, in this embodiment, when the drive assembly 22 rotates, the first friction member 2315 is driven to rotate. The first friction member 2315, through the friction between the first and second friction members 2315, 2322, drives the tensioning wheel 21 to rotate. At this time, the tensioning wheel 21, pulled by the cable 200, causes the second friction member 2322 to exert a reaction force on the first friction member 2315. However, this reaction force is less than the maximum friction between the first and second friction members 2315, 2322. Therefore, slippage does not occur between the first and second friction members 2315, and the tensioning wheel 21 rotates synchronously with the drive assembly 22. When the pulling force of the cable 200 on the tensioning wheel 21 toward the spool 10 gradually increases to a critical value, the reaction force of the second friction member 2322 on the first friction member 2315 is greater than the maximum friction force between the first friction member 2315 and the second friction member 2322, and relative slippage occurs between the first friction member 2315 and the second friction member 2322. The tensioning wheel 21 reverses relative to the driving assembly 22, and the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 decreases.

[0072] It should be noted that the second friction member 2322 can be directly formed on the tensioning wheel 21. Of course, the second friction member 2322 can also be provided separately from the tensioning wheel 21, and the second friction member 2322 is connected to the tensioning wheel 21 through a fastener.

[0073] It should be noted that the first matching portion 231 and the second matching portion 232 are not limited to the above-mentioned embodiment. For example, in another embodiment, as shown in FIG9 , one of the first matching portion 231 and the second matching portion 232 includes a first magnetic member 2316, and the other of the first matching portion 231 and the second matching portion 232 includes a second magnetic member 2323 or a magnetic attraction member. The first matching portion 231 and the second matching portion 232 are magnetically connected so that the first matching portion 231 can generate a driving force on the second matching portion 232. The magnetic material refers to an object made of the material having magnetism, such as a magnet. The magnetic attraction material refers to an object made of the material that can be adsorbed by the magnetic material, such as iron, cobalt, and nickel.

[0074] Taking the example of the first matching part 231 including the first magnetic part 2316 and the second matching part 232 including the second magnetic part 2323, in this embodiment, when the driving component 22 rotates, it drives the first magnetic part 2316 to rotate, and the first magnetic part 2316 drives the tensioning wheel 21 to rotate through the magnetic attraction force between the first magnetic part 2316 and the second magnetic part 2323. At this time, the tensioning wheel 21 is pulled by the cable 200 so that the second magnetic part 2323 has a reaction force on the first magnetic part 2316, but the reaction force is smaller than the magnetic attraction force between the first magnetic part 2316 and the second magnetic part 2323. Therefore, no slippage will occur between the first magnetic part 2316 and the second magnetic part 2323, and the tensioning wheel 21 and the driving component 22 rotate synchronously. When the pulling force of the cable 200 on the tensioning wheel 21 toward the reel 10 gradually increases to a critical value, the reaction force of the second magnetic part 2323 on the first magnetic part 2316 is greater than the magnetic attraction between the first magnetic part 2316 and the second magnetic part 2323, and relative slippage occurs between the first magnetic part 2316 and the second magnetic part 2323. The tensioning wheel 21 reverses relative to the driving component 22, and the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the reel 10 decreases.

[0075] It should be noted that the tensioning wheel 21 can be at least partially made directly of magnetic material or magnetic attraction material, that is, the second magnetic part 2323 is directly formed on the tensioning wheel 21. Of course, the second magnetic part 2323 can also be set separately from the tensioning wheel 21, and then connected to the tensioning wheel 21 through fasteners. The specific details can be determined according to actual design requirements.

[0076] As shown in Figures 5 and 6, in one embodiment, the tensioning pulley 21 includes a first spoke 211 and a second spoke 212, the second spoke 212 being connected to the first spoke 211. A plurality of radially extending first ribs 2111 are provided on the side of the first spoke 211 facing the second spoke 212, and the plurality of first ribs 2111 are spaced apart along the circumference of the first spoke 211. A plurality of radially extending second ribs 2121 are provided on the side of the second spoke 212 facing the first spoke 211, and the plurality of second ribs 2121 are spaced apart along the circumference of the second spoke 212. The first ribs 2111 and the second ribs 2121 are staggered. In this embodiment, the first ribs 2111 and the second ribs 2121 can increase the gripping force on the cable 200.

[0077] It should be noted that the first spoke 211 and the second spoke 212 can be provided separately and then connected together by fasteners. In this embodiment, the manufacturing difficulty of the tensioning wheel 21 can be reduced. Of course, the first spoke 211 and the second spoke 212 can also be integrally formed, which can be determined according to actual design requirements.

[0078] As shown in Figures 4 and 5, in one embodiment, the drive assembly 22 includes a transmission member 221 and a rotating shaft assembly 222. The transmission member 221 and the tensioning wheel 21 are both located on the rotating shaft assembly 222. The transmission member 221 is used to cooperate with the spool 10 in transmission, so that when the spool 10 rotates, the transmission member 221 can drive the rotating shaft assembly 222 to rotate, thereby driving the tensioning wheel 21 to rotate. In this embodiment, by providing the transmission member 221 to cooperate with the spool 10 in transmission, the transmission member 221 and the spool 10 can share a motor, which not only reduces the complexity of the device but also reduces the cost by reducing the number of motors. The tensioning mechanism 20 achieves speed adjustment of the tensioning wheel 21 by reusing the motor of the spool 10 and combining it with the setting of its own differential mechanism 23. Of course, it is also possible to drive the transmission member 221 and the spool 10 separately with two motors, and the specific design can be determined according to actual design needs.

[0079] As shown in FIG. 5 , in one embodiment, the tensioning wheel 21 is disposed between the transmission member 221 and the differential mechanism 23 , and the mounting seat 234 is disposed on a side of the differential mechanism 23 facing away from the tensioning wheel 21 .

[0080] As shown in Figure 5, in one embodiment, the shaft assembly 222 includes a first shaft 2221 and a second shaft 2222. The transmission member 221 is connected to the first shaft 2221, and the mounting base 234 is connected to the second shaft 2222. The first shaft 2221 and the second shaft 2222 are connected and coaxially arranged. This embodiment facilitates assembly of the tensioning mechanism 20. Of course, the shaft assembly 222 can also be configured as a single shaft, and the specific design can be determined based on actual design requirements.

[0081] As shown in FIG4 , in one embodiment, the transmission member 221 includes a first gear 2211 and at least one second gear 2212, the second gear 2212 meshing with the first gear 2211, and the spool 10 is provided with a third gear 11 for meshing with the second gear 2212. Preferably, there is one second gear 2212.

[0082] As shown in Figure 4, in one embodiment, the reel 10 includes a reel shaft 12 and two discs 13, one located at each end of the reel shaft 12. The cable 200 is wound around the reel shaft 12. One of the discs 13 has teeth on its edge, forming a third gear 11. This embodiment fully utilizes the structure of the reel 10, further simplifying the structure of the tensioning mechanism 20. Alternatively, the third gear 11 may be a separate component connected to the reel 10 via fasteners.

[0083] It should be noted that the transmission member 221 is not limited to being configured to include the first gear 2211. For example, in another embodiment, the transmission member 221 can be configured to include a first pulley, the spool 10 is provided with a second pulley, and the first pulley and the second pulley are driven by a belt drive. For example, in another embodiment, the transmission member 221 can be configured to include a first sprocket, the spool 10 is provided with a second sprocket, and the first sprocket and the second sprocket are driven by a chain drive.

[0084] As shown in FIG. 5 , in one embodiment, a second through hole 2213 is defined in the middle of the first gear 2211 , and the first gear 2211 is sleeved on the shaft assembly 222 through the second through hole 2213 .

[0085] In one embodiment, the tensioning wheel 21 is rotatably mounted on the rotating shaft assembly 222. The differential mechanism 23 is disposed on the rotating shaft assembly 222 and rotates synchronously with the rotating shaft assembly 222. The differential mechanism 23 is connected to the tensioning wheel 21. When the tensioning mechanism 20 is in a first operating state, the rotating shaft assembly 222 drives the differential mechanism 23 to rotate, and the differential mechanism 23 drives the tensioning wheel 21 to rotate synchronously. When the tensioning mechanism 20 is in a second operating state, the cable 200 drives the tensioning wheel 21 to rotate relative to the drive assembly 22. The rotation of the differential mechanism 23 enables the tensioning wheel 21 to rotate relative to the drive assembly 22.

[0086] As shown in Figure 5, in one embodiment, the driving assembly 22 also includes a one-way bearing 223, and the transmission member 221 is connected to the rotating shaft assembly 222 through the one-way bearing 223. The one-way bearing 223 is used to drive the rotating shaft assembly 222 to rotate only when the reel 10 is paying out the line.

[0087] In one embodiment, the rotating shaft assembly 222 is interference fit with the inner ring of the one-way bearing 223 , and the transmission member 221 is interference fit with the outer ring of the one-way bearing 223 .

[0088] It should be noted that, to achieve that the reel 10 can drive the rotating shaft assembly 222 to rotate only when paying out the line, it is not limited to the solution of using the above-mentioned one-way bearing 223. For example, in another embodiment, the driving assembly 22 also includes a ratchet assembly, and the transmission member 221 is connected to the rotating shaft assembly 222 through the ratchet assembly. The ratchet assembly is used to enable the reel 10 to drive the rotating shaft assembly 222 to rotate only when paying out the line.

[0089] As shown in Figures 5 and 6, in one embodiment, the drive assembly 22 further includes a retaining ring 224. The retaining ring 224 is disposed on the rotating shaft assembly 222 and is located between the transmission member 221 and the tensioning pulley 21. In this embodiment, the retaining ring 224 can reduce friction between the transmission member 221 and the tensioning pulley 21, thereby extending the service life of the tensioning mechanism 20. The retaining ring 224 can be, but is not limited to, a copper ring.

[0090] As shown in Figures 5 and 6, in one embodiment, the drive assembly 22 further includes a bearing 225. The rotating shaft assembly 222 forms an interference fit with the inner ring of the bearing 225, and the tensioning pulley 21 forms an interference fit with the outer ring of the first bearing 225. In this embodiment, the tensioning pulley 21 is rotatably connected to the rotating shaft assembly 222 via the bearing 225, which can reduce friction between the tensioning pulley 21 and the rotating shaft assembly 222 and increase the service life of the rotating shaft assembly 222. Of course, the tensioning pulley 21 can also be directly rotatably mounted on the rotating shaft assembly 222, and the specific design can be determined based on actual design requirements.

[0091] As shown in Figures 1 and 10, in one embodiment, the cable retracting device 100 further includes a fuse assembly 30. The fuse assembly 30 is provided in the outlet path of the reel 10, and the cable 200 passes through the fuse assembly 30. The fuse assembly 30 is used to fuse the cable 200. It should be noted that in some embodiments, the proposed cable retracting device 100 is applied to an aircraft, a hoisting vehicle or a tower crane that can carry a load. When the cable 200 of the cable retracting device 100 is entangled, it may cause the aircraft to be unable to fly away, the hoisting vehicle to be unable to leave, and the tower crane to be unable to proceed to the next operation. In this embodiment, by providing the fuse assembly 30, when the cable 200 or the load is entangled, the fuse assembly 30 can fuse the cable 200, thereby avoiding the situation in which the aircraft cannot fly away, the hoisting vehicle cannot leave, and the tower crane cannot proceed to the next operation due to the entanglement of the cable 200.

[0092] As shown in Figures 1 and 10, in one embodiment, the cable retracting device 100 also includes a support seat 40, the wire wheel 10 and the tensioning mechanism 20 are installed on the support seat 40, the fuse assembly 30 includes a shell 31, a heat conductor 32 and a heating element 33, the shell 31 is connected to the support seat 40, the heat conductor 32 is arranged inside the shell 31, the cable 200 passes through the heat conductor 32, and the heating element 33 is in thermal contact with the heat conductor 32. The heating element 33 transfers heat to the heat conductor 32 to fuse the cable 200.

[0093] In one embodiment, the housing 31 is made of a heat-insulating material. In this embodiment, the heat generated by the heating element 33 during operation can be prevented from rapidly dissipating to the surrounding environment, that is, the heat can be concentrated, thereby achieving a faster melting effect on the cable 200.

[0094] As shown in FIG10 , in one embodiment, the fuse assembly 30 includes a thermal insulator 34 disposed between the heat conductor 32 and the housing 31. In this embodiment, the provision of the thermal insulator 34 can reduce heat transfer from the heat conductor 32 to the housing 31, and then from the housing 31 to the support base 40, thereby reducing the risk of heat affecting the operation of components mounted on the support base 40.

[0095] As shown in FIG3 and FIG11 , in one embodiment, the cable retracting device 100 further includes a hook mechanism 50 , which is connected to the cable 200 . The hook mechanism 50 is used to lift the load, and when the reel 10 rotates, the cable 200 drives the hook mechanism 50 to rise and fall.

[0096] In one embodiment, the hook mechanism 50 includes a first connecting arm 51 and a second connecting arm 52 that are rotatably connected. The free end of the first connecting arm 51 and the free end of the second connecting arm 52 are separated or contacted to open or close the hook mechanism 50.

[0097] As shown in Figures 3 and 11, in one embodiment, the cable retractor 100 further includes a restricting member 60 configured to engage or disengage with the hook mechanism 50. When the hook mechanism 50 engages the restricting member, the restricting member prevents the hook mechanism 50 from freely opening, allowing the hook mechanism 50 to close and be used to hang a load. In response to the movable member driving the hook mechanism 50 downward to disengage the restricting member, the hook mechanism 50 is configured to freely open and release the load.

[0098] Taking the above-mentioned cable retracting device 100 as an example of being used on a logistics aircraft, in an application scenario of loading a load in the air, the logistics aircraft flies over the shipping site, the reel 10 pays out the line, and the hook mechanism 50 descends. After the operator hoists the load onto the hook mechanism 50, the reel 10 reels in the line and the hook mechanism 50 rises until the hook mechanism 50 abuts against the restricting part 60. At this time, the hook mechanism 50 remains closed. Then the logistics aircraft flies to the destination, the reel 10 pays out the line, and the hook mechanism 50 descends and leaves the restricting part 60, and can open freely to release the load. In an application scenario where a load is loaded on a load-bearing surface (such as the ground or a work surface), the logistics aircraft is mounted on the load-bearing surface, and the reel 10 is in a reeled state. The reel 10 does not need to pay out the line, and the user directly mounts the load on the hook mechanism 50 under the logistics aircraft. After the hook hangs the load, the logistics aircraft takes off and starts to perform the mission. Then the logistics aircraft flies to the destination, the reel 10 pays out the line, and the hook mechanism 50 drops down and leaves the restriction 60, and can be freely opened to release the load; or, on the load-bearing surface, the user can pull out the hook mechanism 50, and after the load is mounted, the logistics aircraft takes off and reels the cable 200 of the reel 10 to a preset height, starts to perform the mission, flies to the destination, pays out the line, and the hook mechanism 50 drops down and leaves the restriction 60, and can be freely opened to release the load.

[0099] In this embodiment, the restriction member 60 is provided to limit the free opening of the hook mechanism 50. This prevents the hook mechanism 50 from suddenly opening due to an emergency during the delivery process, causing the load to fall from the air, thereby improving safety. In addition, after the hook mechanism 50 is disengaged from the restriction member 60, the hook mechanism 50 can open freely (such as automatically opening immediately or under certain triggering conditions) to release the load. This allows for automated delivery of the load, reduces human intervention, and saves manpower and material resources. It should be noted that the restriction member 60 can prevent the hook mechanism 50 from opening freely. This means that the hook mechanism 50 cannot open freely under the action of the restriction member 60, but can open to facilitate the insertion of the load when an external force intervenes.

[0100] As shown in FIG11 , in one embodiment, the restricting member 60 is provided with a receiving cavity 61 for accommodating at least a portion of the hook mechanism 50 and a wire hole 62 communicating with the receiving cavity 61. The cable 200 can pass through the wire hole 62 for upward and downward movement. In response to the cable 200 driving the hook mechanism 50 upward until it contacts the restricting member 60, the hook mechanism 50 contacts the inner wall 63 of the receiving cavity 61. In response to the cable 200 driving the hook mechanism 50 downward until it disengages from the restricting member 60, the hook mechanism 50 disengages from the inner wall 63 of the receiving cavity 61. That is, in this embodiment, when the hook mechanism 50 contacts the inner wall 63 of the receiving cavity 61, the surface of the first connecting arm 51 facing away from the second connecting arm 52 at least partially contacts the inner wall 63 of the receiving cavity 61, and the surface of the second connecting arm 52 facing away from the first connecting arm 51 at least partially contacts the inner wall 63 of the receiving cavity 61. Constrained by the inner wall 63 of the receiving cavity 61, the first connecting arm 51 and the second connecting arm 52 cannot open in opposite directions, thereby maintaining the hook mechanism 50 closed. In this embodiment, the structure for restricting the first connecting arm 51 and the second connecting arm 52 from opening is very simple and does not affect the lifting and lowering of the hook mechanism 50 , so the lifting and lowering of the hook mechanism 50 is very convenient.

[0101] In one embodiment, the cable 200 may be, but is not limited to, a high molecular weight polyethylene cable 200 . High molecular weight polyethylene has the properties of wear resistance, impact resistance, corrosion resistance, self-lubrication, and crack resistance, and has a long service life.

[0102] As shown in FIG. 1 and FIG. 2 , in one embodiment, the cable retracting device 100 further includes a motor 70 . The motor 70 is mounted on the support seat 40 and connected to the reel 10 . The motor 70 is used to drive the reel 10 to rotate.

[0103] As shown in FIG. 1 and FIG. 2 , in one embodiment, the cable retracting device 100 further includes a control box 80 . The control box 80 is electrically connected to at least the motor 70 and the fuse assembly 30 to control the operation of the motor 70 and the fuse assembly 30 .

[0104] As shown in Figures 1 and 2, in one embodiment, the motor 70 and the control box 80 are disposed on opposite sides of the reel 10. In this embodiment, space can be reasonably utilized, and the cable retracting device 100 has a compact structure.

[0105] As shown in Figures 1 to 6, an embodiment of the present application further provides a cable retracting device 100. The cable retracting device 100 includes a reel 10 and a tensioning mechanism 20. The reel 10 is rotatable and is used to wind a cable 200 and can reel in or release the cable 200 when rotating. The tensioning mechanism 20 includes a tensioning wheel 21 and a drive assembly 22. The tensioning wheel 21 is rotatable and is used to guide the cable 200 and put the cable 200 into a tensioned state when rotating. The drive assembly 22 is configured to drive the tensioning wheel 21 to rotate. The drive assembly 22 includes a transmission member 221, which is used to cooperate with the reel 10 in transmission, so that when the reel 10 rotates, it can drive the drive assembly 22 to rotate through the transmission member 221, thereby driving the tensioning wheel 21 to rotate.

[0106] The cable retractable device 100 proposed in this embodiment firstly utilizes a tensioning mechanism 20 to tension the cable 200 during the reel 10's unwinding process. This tension from the tensioning mechanism 20 effectively prevents the cable 200 from being strangled by the reel 10, which could result in the device 100 not being able to unwind smoothly. Secondly, by providing a transmission member 221 that cooperates with the reel 10, the transmission member 221 and the reel 10 can share a single motor 70. This not only reduces the device's structural complexity but also reduces costs by eliminating the number of motors 70.

[0107] In one embodiment, the drive assembly 22 and the tensioning wheel 21 can rotate synchronously or relatively. The tensioning mechanism 20 has a first working state and a second working state different from the first working state during the process of the cable taking-up and releasing device 100 releasing the cable 200. When the tensioning mechanism 20 is in the first working state, the drive assembly 22 drives the tensioning wheel 21 to rotate synchronously. When the tensioning mechanism 20 is in the second working state, the tensioning wheel 21 can rotate in the opposite direction relative to the drive assembly 22.

[0108] In one embodiment, when the tensioning mechanism 20 is in the first operating state, the tension of the cable 200 increases to the first tensioning state. Thereafter, the tensioning mechanism 20 enters the second operating state, and the cable 200 is in the second tensioning state. The tension of the cable 200 in the first tensioning state is greater than the tension of the cable 200 in the second tensioning state.

[0109] In one embodiment, when the tensioning mechanism 20 is in the first working state, the pay-off speed of the tensioning wheel 21 is greater than the pay-off speed of the spool 10 so that the cable 200 is in a tensioned state, and as the pay-off length of the spool 10 increases, the pulling force of the cable 200 on the tensioning wheel 21 toward the spool 10 gradually increases to a critical value, and the cable 200 drives the tensioning wheel 21 to rotate in the opposite direction relative to the driving assembly 22, and the tensioning mechanism 20 enters the second working state so that the pulling force of the cable 200 is reduced.

[0110] In one embodiment, the drive assembly 22 is connected to the tensioning wheel 21 through a differential mechanism 23 , and the critical value at least includes the sum of the maximum driving force applied by the differential mechanism 23 to the tensioning wheel 21 and the gravity of the load mounted on the cable 200 .

[0111] In one embodiment, when the tensioning mechanism 20 is in the first working state, as the pay-off length of the spool 10 increases, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 increases to ΔV1. When the tensioning mechanism 20 enters the second working state, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 is ΔV2, wherein ΔV2 is less than ΔV1.

[0112] In one embodiment, ΔV2 is equal to zero.

[0113] In one embodiment, when the tensioning wheel 21 rotates in the opposite direction relative to the driving assembly 22 , the rotation directions of the tensioning wheel 21 and the driving assembly 22 are the same, and the rotation speed of the tensioning wheel 21 is lower than the rotation speed of the driving assembly 22 .

[0114] In one embodiment, during the process of the cable retracting device 100 releasing the cable, the first working state and the second working state exist alternately.

[0115] As shown in FIG5 and FIG6 , in one embodiment, the cable retracting device 100 further includes a differential mechanism 23 , and the driving assembly 22 is connected to the tensioning wheel 21 via the differential mechanism 23 , so that the driving assembly 22 and the tensioning wheel 21 can rotate synchronously or relatively.

[0116] In one embodiment, the differential mechanism 23 includes a first mating portion 231 and a second mating portion 232. The first mating portion 231 is connected to the drive assembly 22, and the second mating portion 232 is connected to the tensioning pulley 21. The drive assembly 22 drives the tensioning pulley 21 to rotate through the mating of the first mating portion 231 and the second mating portion 232. When the tensioning mechanism 20 is in the first operating state, the first mating portion 231 and the second mating portion 232 cooperate to achieve synchronous rotation of the first mating portion 231 and the second mating portion 232. When the tensioning mechanism 20 is in the second operating state, the second mating portion 232 can rotate in the opposite direction relative to the first mating portion 231, driven by the cable 200.

[0117] As shown in Figure 6, in one embodiment, the first matching portion 231 is in contact with the second matching portion 232, and an elastic member 233 is provided between the first matching portion 231 and the driving assembly 22. The elastic member 233 is used to provide an elastic force to push the first matching portion 231 toward the second matching portion 232 so that the first matching portion 231 can generate a driving force to drive the second matching portion 232 to rotate.

[0118] As shown in FIG. 6 , in one embodiment, the first mating portion 231 includes an insert 2311 , the second mating portion 232 includes a groove 2321 , and the insert 2311 is configured to be at least partially embeddable in the groove 2321 .

[0119] As shown in Figure 6, in one embodiment, the differential mechanism 23 includes a mounting seat 234 connected to the drive assembly 22 and rotating synchronously, the mounting seat 234 is provided with an assembly groove and an opening A connected to the assembly groove, the insert 2311 and the elastic member 233 are arranged in the assembly groove, and the insert 2311 is at least partially exposed from the opening A to cooperate with the groove 2321.

[0120] As shown in FIG. 6 , in one embodiment, the first matching portion 231 further includes a supporting member 2312 . The supporting member 2312 is disposed between the insert 2311 and the elastic member 233 . The elastic member 233 pushes the insert 2311 through the supporting member 2312 .

[0121] As shown in FIG. 6 , in one embodiment, the supporting member 2312 includes a supporting portion 2313 and a rod portion 2314 . The supporting portion 2313 abuts against the insert 2311 . The rod portion 2314 is connected to the supporting portion 2313 . The rod portion 2314 passes through the elastic member 233 .

[0122] As shown in FIG. 6 , in one embodiment, the mounting base 234 includes a base body 2342 and a cover plate 2343 . The base body 2342 is provided with an assembly groove. The cover plate 2343 is connected to the base body 2342 . The cover plate 2343 is provided with an opening A.

[0123] As shown in FIG. 8 , in one embodiment, the first matching portion 231 includes a first friction member 2315 , and the second matching portion 232 includes a second friction member 2322 . The second friction member 2322 abuts against the first friction member 2315 .

[0124] As shown in Figure 9, in one embodiment, one of the first matching portion 231 and the second matching portion 232 includes a first magnetic member 2316, and the other of the first matching portion 231 and the second matching portion 232 includes a second magnetic member 2323 or a magnetic attraction member. The first matching portion 231 and the second matching portion 232 are magnetically connected so that the first matching portion 231 can generate a driving force on the second matching portion 232.

[0125] In one embodiment, a plurality of second matching portions 232 are arranged at intervals along the circumference of the tensioning wheel 21 , and the first matching portion 231 and the second matching portion 232 are arranged correspondingly.

[0126] As shown in Figures 5 and 6, in one embodiment, the tensioning wheel 21 includes a first spoke 211 and a second spoke 212, and the second spoke 212 is connected to the first spoke 211, wherein the first spoke 211 is provided with a plurality of radially extending first ribs 2111 on the side facing the second spoke 212, and the plurality of first ribs 2111 are arranged at intervals along the circumference of the first spoke 211, and the second spoke 212 is provided with a plurality of radially extending second ribs 2121 on the side facing the first spoke 211, and the plurality of second ribs 2121 are arranged at intervals along the circumference of the second spoke 212, and the first ribs 2111 and the second ribs 2121 are arranged alternately.

[0127] As shown in Figures 4 and 5, in one embodiment, the driving assembly 22 includes a transmission member 221 and a rotating shaft assembly 222. The transmission member 221 and the tensioning wheel 21 are both arranged on the rotating shaft assembly 222. The transmission member 221 is used to cooperate with the spool 10 in transmission, so that when the spool 10 rotates, it can drive the rotating shaft assembly 222 to rotate through the transmission member 221, and then drive the tensioning wheel 21 to rotate.

[0128] As shown in FIG. 4 , in one embodiment, the transmission member 221 includes a first gear 2211 and at least one second gear 2212 , the second gear 2212 meshes with the first gear 2211 , and the reel 10 is provided with a third gear 11 for meshing with the second gear 2212 .

[0129] In one embodiment, the tensioning pulley 21 is rotatably mounted on the rotating shaft assembly 222. The differential mechanism 23 is disposed on the rotating shaft assembly 222 and rotates synchronously with the rotating shaft assembly 222. The differential mechanism 23 is connected to the tensioning pulley 21. When the tensioning mechanism 20 is in a first operating state, the rotating shaft assembly 222 drives the differential mechanism 23 to rotate, which in turn drives the tensioning pulley 21 to rotate synchronously. When the tensioning mechanism 20 is in a second operating state, the cable 200 drives the tensioning pulley 21 to rotate relative to the drive assembly 22. The rotation of the differential mechanism 23 enables the tensioning pulley 21 to rotate relative to the drive assembly 22.

[0130] As shown in Figure 5, in one embodiment, the driving assembly 22 also includes a one-way bearing 223, and the transmission member 221 is connected to the rotating shaft assembly 222 through the one-way bearing 223. The one-way bearing 223 is used to drive the rotating shaft assembly 222 to rotate only when the reel 10 is paying out the line.

[0131] In one embodiment, the rotating shaft assembly 222 is interference fit with the inner ring of the one-way bearing 223 , and the transmission member 221 is interference fit with the outer ring of the one-way bearing 223 .

[0132] As shown in FIG. 5 and FIG. 6 , in one embodiment, the driving assembly 22 further includes a retaining ring 224 . The retaining ring 224 is sleeved on the rotating shaft assembly 222 and is located between the transmission member 221 and the tensioning wheel 21 .

[0133] As shown in FIG. 1 and FIG. 10 , in one embodiment, the cable retracting device 100 further includes a fuse assembly 30 , which is disposed in the wire outlet path of the reel 10 . The cable 200 passes through the fuse assembly 30 , and the fuse assembly 30 is used to fuse the cable 200 .

[0134] As shown in Figures 1 and 10, in one embodiment, the cable retracting device 100 also includes a support seat 40, the wire wheel 10 and the tensioning mechanism 20 are installed on the support seat 40, the fuse assembly 30 includes a shell 31, a heat conductor 32 and a heating element 33, the shell 31 is connected to the support seat 40, the heat conductor 32 is arranged inside the shell 31, the cable 200 passes through the heat conductor 32, and the heating element 33 is in thermal contact with the heat conductor 32. The heating element 33 transfers heat to the heat conductor 32 to fuse the cable 200.

[0135] In one embodiment, the housing 31 is made of a heat-insulating material.

[0136] As shown in FIG. 10 , in one embodiment, the fuse assembly 30 includes a heat insulating member 34 , which is disposed between the heat conducting member 32 and the housing 31 .

[0137] The structures and connection relationships, extended implementation methods, and beneficial effects of other components of the cable retracting device 100 proposed in this embodiment can refer to the above embodiments and will not be described in detail here.

[0138] As shown in FIG12 , an embodiment of the present application further provides an operating method S100 of the cable retracting device 100 . The proposed operating method S100 includes:

[0139] S10, the reel 10 rotates to release the cable 200;

[0140] S20, the drive assembly 22 drives the tensioning wheel 21 to rotate, thereby guiding the cable 200 and placing the cable 200 in a tensioned state. The drive assembly 22 rotates synchronously with the tensioning wheel 21, and the pulling force of the cable 200 on the tensioning wheel 21 toward the reel 10 increases.

[0141] S30 , in response to the tension increasing to a critical value, the cable 200 drives the tensioning wheel 21 to rotate in the opposite direction relative to the driving assembly 22 , so that the tension is reduced.

[0142] In one embodiment, in the step of the drive assembly 22 driving the tensioning wheel 21 to rotate, the pay-off speed of the tensioning wheel 21 is greater than the pay-off speed of the spool 10 so that the cable 200 is in a tensioned state, and as the pay-off length of the spool 10 increases, the pulling force of the cable 200 on the tensioning wheel 21 toward the spool 10 gradually increases to a critical value.

[0143] In one embodiment, the drive assembly 22 is connected to the tensioning wheel 21 through a differential mechanism 23, and the differential mechanism 23 enables the tensioning wheel 21 and the drive assembly 22 to generate relative motion; the critical value at least includes the sum of the driving force applied to the tensioning wheel 21 by the differential mechanism 23 and the gravity of the mounted load.

[0144] In one embodiment, in the step of the driving assembly 22 driving the tensioning wheel 21 to rotate, as the pay-off length of the spool 10 increases, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 increases to ΔV1; in the step of the cable 200 driving the tensioning wheel 21 to rotate in the opposite direction relative to the driving assembly 22, the difference between the pay-off speed of the tensioning wheel 21 and the pay-off speed of the spool 10 is ΔV2; wherein, ΔV2 is less than ΔV1.

[0145] In one embodiment, ΔV2 is equal to zero.

[0146] The operating method of the cable retracting device 100 proposed in this embodiment, other implementation steps, extended implementation methods and beneficial effects can refer to the above embodiments and will not be described in detail here.

[0147] As shown in Figures 5 and 6, an embodiment of the present application further proposes a tensioning mechanism 20, which is applied to a cable retracting device 100. The cable retracting device 100 is capable of reeling in or releasing the cable 200. The proposed tensioning mechanism 20 includes a tensioning wheel 21 and a drive assembly 22. The tensioning wheel 21 is rotatable, and the drive assembly 22 is configured to drive the tensioning wheel 21 to rotate, and the drive assembly 22 and the tensioning wheel 21 can rotate synchronously or relative to each other. The tensioning mechanism 20 has a first working state and a second working state different from the first working state during the process of releasing the cable 200 from the cable retracting device 100. When the tensioning mechanism 20 is in the first working state, the drive assembly 22 drives the tensioning wheel 21 to rotate synchronously. When the tensioning mechanism 20 is in the second working state, the tensioning wheel 21 rotates in the opposite direction relative to the drive assembly 22.

[0148] The tensioning mechanism 20 proposed in this embodiment is configured to rotate relative to the driving assembly 22 by setting a tensioning wheel 21. When the tensioning wheel 21 cooperates with the reel 10 of the cable retracting device 100 to pay out the line, when there is a large difference between the pay-out speed of the reel 10 and the pay-out speed of the tensioning wheel 21, the cable 200 between the reel 10 and the tensioning wheel 21 is too tight, resulting in the tensioning wheel 21 being subjected to a large force (exceeding a critical value) from the cable 200 toward the reel 10. The tensioning wheel 21 can rotate in the opposite direction relative to the driving assembly 22, so that the cable 200 between the reel 10 and the tensioning wheel 21 becomes loose, thereby preventing the cable 200 between the reel 10 and the tensioning wheel 21 from being too tight and affecting the smooth lowering of the cable 200, or even causing the cable 200 to break, thereby achieving stable pay-out of the cable 200.

[0149] As shown in Figures 5 and 6, in one embodiment, the tensioning mechanism 20 also includes a differential mechanism 23, and the drive assembly 22 is connected to the tensioning wheel 21 through the differential mechanism 23. The drive assembly 22 drives the tensioning wheel 21 through the differential mechanism 23 so that the tensioning wheel 21 and the drive assembly 22 rotate synchronously or in opposite directions.

[0150] In one embodiment, the differential mechanism 23 includes a first mating portion 231 and a second mating portion 232. The first mating portion 231 is connected to the drive assembly 22, and the second mating portion 232 is connected to the tensioning pulley 21. The drive assembly 22 drives the tensioning pulley 21 to rotate through the mating of the first mating portion 231 and the second mating portion 232. When the tensioning mechanism 20 is in the first operating state, the first mating portion 231 and the second mating portion 232 cooperate to achieve synchronous rotation of the first mating portion 231 and the second mating portion 232. When the tensioning mechanism 20 is in the second operating state, the second mating portion 232 can rotate in the opposite direction relative to the first mating portion 231, driven by the cable 200.

[0151] As shown in Figure 6, in one embodiment, the first matching portion 231 is in contact with the second matching portion 232, and an elastic member 233 is provided between the first matching portion 231 and the driving assembly 22. The elastic member 233 is used to provide an elastic force to push the first matching portion 231 toward the second matching portion 232 so that the first matching portion 231 can generate a driving force to drive the second matching portion 232.

[0152] As shown in FIG. 6 , in one embodiment, the first mating portion 231 includes an insert 2311 , the second mating portion 232 includes a groove 2321 , and the insert 2311 is configured to be at least partially embeddable in the groove 2321 .

[0153] As shown in Figure 6, in one embodiment, the differential mechanism 23 includes a mounting seat 234 connected to the drive assembly 22 and rotating synchronously, the mounting seat 234 is provided with an assembly groove and an opening A connected to the assembly groove, the insert 2311 and the elastic member 233 are arranged in the assembly groove, and the insert 2311 is at least partially exposed from the opening A to cooperate with the groove 2321.

[0154] As shown in FIG. 6 , in one embodiment, the first matching portion 231 further includes a supporting member 2312 . The supporting member 2312 is disposed between the insert 2311 and the elastic member 233 . The elastic member 233 pushes the insert 2311 through the supporting member 2312 .

[0155] As shown in FIG. 6 , in one embodiment, the supporting member 2312 includes a supporting portion 2313 and a rod portion 2314 . The supporting portion 2313 abuts against the insert 2311 . The rod portion 2314 is connected to the supporting portion 2313 . The rod portion 2314 passes through the elastic member 233 .

[0156] As shown in FIG. 6 , in one embodiment, the mounting base 234 includes a base body 2342 and a cover plate 2343 . The base body 2342 is provided with an assembly groove. The cover plate 2343 is connected to the base body 2342 . The cover plate 2343 is provided with an opening A.

[0157] As shown in FIG. 8 , in one embodiment, the first matching portion 231 includes a first friction member 2315 , and the second matching portion 232 includes a second friction member 2322 . The second friction member 2322 abuts against the first friction member 2315 .

[0158] As shown in Figure 9, in one embodiment, one of the first matching portion 231 and the second matching portion 232 includes a first magnetic member 2316, and the other of the first matching portion 231 and the second matching portion 232 includes a second magnetic member 2323 or a magnetic attraction member. The first matching portion 231 and the second matching portion 232 are magnetically connected so that the first matching portion 231 can generate a driving force on the second matching portion 232.

[0159] As shown in Figures 5 and 6, in one embodiment, the tensioning wheel 21 includes a first spoke 211 and a second spoke 212, and the second spoke 212 is connected to the first spoke 211, wherein the first spoke 211 is provided with a plurality of radially extending first ribs 2111 on the side facing the second spoke 212, and the plurality of first ribs 2111 are arranged at intervals along the circumference of the first spoke 211, and the second spoke 212 is provided with a plurality of radially extending second ribs 2121 on the side facing the first spoke 211, and the plurality of second ribs 2121 are arranged at intervals along the circumference of the second spoke 212, and the first ribs 2111 and the second ribs 2121 are arranged alternately.

[0160] In one embodiment, the tensioning mechanism 20 is used to guide the cable 200 on the reel 10 of the cable retracting device 100 and to put the cable 200 in a tensioned state. The driving assembly 22 includes a transmission member 221 and a rotating shaft assembly 222. The transmission member 221 and the tensioning wheel 21 are both arranged on the rotating shaft assembly 222. The transmission member 221 is used to cooperate with the reel 10 in transmission, so that when the reel 10 rotates, it can drive the rotating shaft assembly 222 to rotate through the transmission member 221, thereby driving the tensioning wheel 21 to rotate.

[0161] As shown in FIG. 4 , in one embodiment, the transmission member 221 includes a first gear 2211 and at least one second gear 2212 , the second gear 2212 meshes with the first gear 2211 , and the reel 10 is provided with a third gear 11 for meshing with the second gear 2212 .

[0162] In one embodiment, the driving assembly 22 further includes a one-way bearing 223, and the transmission member 221 is connected to the rotating shaft assembly 222 via the one-way bearing 223. The one-way bearing 223 is used to enable the reel 10 to drive the rotating shaft assembly 222 to rotate only when the line is being released.

[0163] As shown in FIG. 5 , in one embodiment, the rotating shaft assembly 222 is interference fit with the inner ring of the one-way bearing 223 , and the transmission member 221 is interference fit with the outer ring of the one-way bearing 223 .

[0164] As shown in FIG. 5 and FIG. 6 , in one embodiment, the driving assembly 22 further includes a retaining ring 224 . The retaining ring 224 is sleeved on the rotating shaft assembly 222 and is located between the transmission member 221 and the tensioning wheel 21 .

[0165] The structures and connection relationships, extended implementation methods and beneficial effects of other components of the tensioning mechanism 20 proposed in this embodiment can be referred to the above embodiments and will not be described in detail here.

[0166] An embodiment of the present application further provides a movable platform, which includes a movable body and the aforementioned cable retracting device 100 , wherein the cable retracting device 100 is mounted on the movable body.

[0167] In one embodiment, the movable platform includes at least one of the following: a lifting vehicle, a tower crane, and an aircraft capable of carrying a load.

[0168] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A cable retracting device, characterized in that: include: a rotatable reel for winding the cable and capable of reeling in or releasing the cable when rotating; as well as A tensioning mechanism, the tensioning mechanism comprising a driving assembly and a rotatable tensioning wheel, the tensioning wheel being used to guide the cable when rotating and to put the cable in a tensioned state; the driving assembly is configured to drive the tensioning wheel to rotate, and the driving assembly and the tensioning wheel can rotate synchronously or relatively; Wherein, the tensioning mechanism has a first working state and a second working state different from the first working state during the process of the cable taking-up and releasing device releasing the cable; When the tensioning mechanism is in the first working state, the driving assembly drives the tensioning wheel to rotate synchronously; When the tensioning mechanism is in the second working state, the tensioning wheel rotates in the opposite direction relative to the driving assembly.

2. The cable retracting device according to claim 1, characterized in that: When the tensioning mechanism is in the first working state, the tensioning degree of the cable increases to the first tensioning state, and then the tensioning mechanism enters the second working state, and the cable is in the second tensioning state; Wherein, the tension degree of the cable in the first tension state is greater than the tension degree of the cable in the second tension state.

3. The cable retracting device according to claim 1, characterized in that: When the tensioning mechanism is in the first working state, the pay-off speed of the tensioning wheel is greater than the pay-off speed of the wire wheel so that the cable is in a tensioned state, and as the pay-off length of the wire wheel increases, the pulling force of the cable on the tensioning wheel toward the wire wheel gradually increases to a critical value, the cable drives the tensioning wheel to rotate in the opposite direction relative to the driving assembly, and the tensioning mechanism enters the second working state to reduce the pulling force of the cable.

4. The cable retracting device according to claim 3, characterized in that: The driving assembly is connected to the tensioning wheel via a differential mechanism; the critical value at least includes the sum of the maximum driving force applied by the differential mechanism to the tensioning wheel and the gravity of the load mounted on the cable.

5. The cable retracting device according to claim 1, characterized in that: When the tensioning mechanism is in the first working state, as the pay-off length of the wire wheel increases, the difference between the pay-off speed of the tensioning wheel and the pay-off speed of the wire wheel increases to ΔV1; When the tensioning mechanism enters the second working state, the difference between the pay-off speed of the tensioning wheel and the pay-off speed of the wire wheel is ΔV2; wherein ΔV2 is smaller than ΔV1.

6. The cable retracting device according to claim 5, characterized in that: ΔV2 is equal to 0.

7. The cable retracting device according to claim 1, characterized in that: During the process of the tension wheel rotating in the opposite direction relative to the driving assembly, the rotation direction of the tension wheel is the same as that of the driving assembly, and the rotation speed of the tension wheel is lower than the rotation speed of the driving assembly.

8. The cable retracting device according to claim 1, characterized in that: During the process of the cable taking-up and releasing device releasing the cable, the first working state and the second working state exist alternately.

9. The cable retracting device according to any one of claims 1 to 3 and 5 to 8, characterized in that: A differential mechanism is also included, and the drive assembly is connected to the tensioning wheel via the differential mechanism, so that the drive assembly and the tensioning wheel can rotate synchronously or relatively.

10. The cable retracting device according to claim 9, characterized in that: The differential mechanism comprises a first matching portion and a second matching portion, wherein the first matching portion is connected to the driving assembly, and the second matching portion is connected to the tensioning wheel, and the driving assembly drives the tensioning wheel to rotate through the matching of the first matching portion and the second matching portion; Wherein, when the tensioning mechanism is in the first working state, the first matching portion and the second matching portion cooperate to achieve that the first matching portion drives the second matching portion to rotate synchronously; When the tensioning mechanism is in the second working state, the second matching portion can rotate in the opposite direction relative to the first matching portion driven by the cable.

11. The cable retracting device according to claim 10, characterized in that: The first mating portion is in contact with and mated with the second mating portion, and an elastic member is provided between the first mating portion and the driving assembly, the elastic member being used to provide an elastic force to push the first mating portion toward the second mating portion so that the first mating portion can generate a driving force to drive the second mating portion to rotate.

12. The cable retracting device according to claim 11, characterized in that: The first mating portion includes an insert, and the second mating portion includes a groove, wherein the insert is configured to be at least partially insertable into the groove.

13. The cable retracting device according to claim 12, characterized in that: The differential mechanism includes a mounting seat connected to the drive assembly and rotating synchronously, the mounting seat is provided with an assembly groove and an opening connected to the assembly groove, the insert and the elastic member are arranged in the assembly groove, and the insert is at least partially exposed from the opening to cooperate with the groove.

14. The cable retracting device according to claim 13, characterized in that: The first matching portion further includes a supporting member, wherein the supporting member is disposed between the embedding member and the elastic member, and the elastic member pushes the embedding member through the supporting member.

15. The cable retracting device according to claim 14, characterized in that: The supporting member comprises: A supporting portion abutting against the embedding member; The rod portion is connected to the supporting portion, and the rod portion is penetrated through the elastic member.

16. The cable retracting device according to claim 13, characterized in that: The mounting base comprises: The seat body is provided with the assembly groove; The cover plate is connected to the base body, and the cover plate is provided with the opening.

17. The cable retracting device according to claim 11, characterized in that: The first matching portion includes a first friction member, and the second matching portion includes a second friction member, and the second friction member abuts against the first friction member.

18. The cable retracting device according to claim 10, characterized in that: One of the first mating part and the second mating part includes a first magnetic part, and the other of the first mating part and the second mating part includes a second magnetic part or a magnetic attraction part. The first mating part and the second mating part are magnetically connected so that the first mating part can generate a driving force on the second mating part.

19. The cable retracting device according to claim 10, characterized in that: A plurality of the second matching portions are arranged at intervals along the circumference of the tensioning wheel, and the first matching portion and the second matching portion are arranged correspondingly.

20. The cable retracting device according to claim 1, characterized in that: The tensioning wheel comprises: First spoke; a second spoke connected to the first spoke; Among them, a plurality of radially extending first ribs are provided on the side of the first spoke facing the second spoke, and the plurality of first ribs are arranged at intervals along the circumference of the first spoke; a plurality of radially extending second ribs are provided on the side of the second spoke facing the first spoke, and the plurality of second ribs are arranged at intervals along the circumference of the second spoke, and the first ribs and the second ribs are arranged alternately.

21. The cable retracting device according to claim 9, characterized in that: The driving assembly includes a transmission member and a rotating shaft assembly. The transmission member and the tensioning wheel are both arranged on the rotating shaft assembly. The transmission member is used to cooperate with the wire wheel transmission so that when the wire wheel rotates, the rotating shaft assembly can be driven to rotate through the transmission member, thereby driving the tensioning wheel to rotate.

22. The cable retracting device according to claim 21, characterized in that: The transmission member includes a first gear and at least one second gear, the second gear is meshed with the first gear, and the wire wheel is provided with a third gear for meshing with the second gear.

23. The cable retracting device according to claim 21, characterized in that: The tension wheel is rotatably sleeved on the rotating shaft assembly, the differential mechanism is arranged on the rotating shaft assembly and rotates synchronously with the rotating shaft assembly, and the differential mechanism is connected to the tension wheel; When the tensioning mechanism is in the first working state, the rotating shaft assembly drives the differential mechanism to rotate, and the differential mechanism drives the tensioning wheel to rotate synchronously; When the tensioning mechanism is in the second working state, the cable drives the tensioning wheel to rotate relative to the driving assembly, and the differential mechanism rotates so that the tensioning wheel can rotate relative to the driving assembly.

24. The cable retracting device according to claim 21, characterized in that: The driving assembly also includes a one-way bearing, and the transmission member is connected to the rotating shaft assembly via the one-way bearing. The one-way bearing is used so that the line wheel can drive the rotating shaft assembly to rotate only when the line is released.

25. The cable retracting device according to claim 24, characterized in that: The rotating shaft assembly is interference fit with the inner ring of the one-way bearing, and the transmission member is interference fit with the outer ring of the one-way bearing.

26. The cable retracting device according to claim 21, characterized in that: The drive assembly also includes: A retaining ring is sleeved on the rotating shaft assembly and is located between the transmission member and the tensioning wheel.

27. The cable retracting device according to claim 1, characterized in that: Also includes: A fuse assembly is arranged on the wire outlet path of the wire wheel, the cable passes through the fuse assembly, and the fuse assembly is used to fuse the cable.

28. The cable retracting device according to claim 27, characterized in that: The cable retracting device further comprises a support seat, the wire wheel and the tensioning mechanism are mounted on the support seat, and the fuse assembly comprises: A shell connected to the support seat; A heat conducting member, disposed inside the housing, through which the cable passes; A heating element is in thermal contact with the heat conductive element, and the heating element melts the cable by transferring heat to the heat conductive element.

29. The cable retracting device according to claim 28, characterized in that: The shell is made of heat-insulating material.

30. The cable retracting device according to claim 28, characterized in that: The fuse assembly comprises: The heat insulating member is arranged between the heat conducting member and the shell.

31. A cable retracting device, characterized in that: include: a rotatable reel for winding the cable and capable of reeling in or releasing the cable when rotating; as well as A tensioning mechanism, the tensioning mechanism comprising a driving assembly and a rotatable tensioning wheel, the tensioning wheel being used to guide the cable when rotating and to put the cable in a tensioned state; the driving assembly being configured to drive the tensioning wheel to rotate; Wherein, the driving assembly includes a transmission member, and the transmission member is used to cooperate with the wire wheel transmission, so that when the wire wheel rotates, the driving assembly can be driven to rotate through the transmission member, thereby driving the tensioning wheel to rotate.

32. The cable retracting device according to claim 31, characterized in that: The driving assembly and the tensioning wheel can rotate synchronously or relatively; The tensioning mechanism has a first working state and a second working state different from the first working state during the process of the cable taking-up and unwinding device releasing the cable; When the tensioning mechanism is in the first working state, the driving assembly drives the tensioning wheel to rotate synchronously; When the tensioning mechanism is in the second working state, the tensioning wheel rotates in the opposite direction relative to the driving assembly.

33. The cable retracting device according to claim 32, characterized in that: When the tensioning mechanism is in the first working state, the tensioning degree of the cable increases to the first tensioning state, and then the tensioning mechanism enters the second working state, and the cable is in the second tensioning state; Wherein, the tension degree of the cable in the first tension state is greater than the tension degree of the cable in the second tension state.

34. The cable retracting device according to claim 32, characterized in that: When the tensioning mechanism is in the first working state, the pay-off speed of the tensioning wheel is greater than the pay-off speed of the wire wheel so that the cable is in a tensioned state, and as the pay-off length of the wire wheel increases, the pulling force of the cable on the tensioning wheel toward the wire wheel gradually increases to a critical value, the cable drives the tensioning wheel to rotate in the opposite direction relative to the driving assembly, and the tensioning mechanism enters the second working state to reduce the pulling force of the cable.

35. The cable retracting device according to claim 34, characterized in that: The driving assembly is connected to the tensioning wheel via a differential mechanism; the critical value at least includes the sum of the maximum driving force applied by the differential mechanism to the tensioning wheel and the gravity of the load mounted on the cable.

36. The cable retracting device according to claim 32, characterized in that: When the tensioning mechanism is in the first working state, as the pay-off length of the wire wheel increases, the difference between the pay-off speed of the tensioning wheel and the pay-off speed of the wire wheel increases to ΔV1; When the tensioning mechanism enters the second working state, the difference between the pay-off speed of the tensioning wheel and the pay-off speed of the wire wheel is ΔV2; wherein ΔV2 is smaller than ΔV1.

37. The cable retracting device according to claim 36, characterized in that: ΔV2 is equal to 0.

38. The cable retracting device according to claim 32, characterized in that: During the process of the tension wheel rotating in the opposite direction relative to the driving assembly, the rotation direction of the tension wheel is the same as that of the driving assembly, and the rotation speed of the tension wheel is lower than the rotation speed of the driving assembly.

39. The cable retracting device according to claim 32, characterized in that: During the process of the cable taking-up and releasing device releasing the cable, the first working state and the second working state exist alternately.

40. The cable retracting device according to any one of claims 32 to 34 and 36 to 39, characterized in that: A differential mechanism is also included, and the drive assembly is connected to the tensioning wheel via the differential mechanism, so that the drive assembly and the tensioning wheel can rotate synchronously or relatively.

41. The cable retracting device according to claim 40, characterized in that: The differential mechanism comprises a first matching portion and a second matching portion, wherein the first matching portion is connected to the driving assembly, and the second matching portion is connected to the tensioning wheel, and the driving assembly drives the tensioning wheel to rotate through the matching of the first matching portion and the second matching portion; Wherein, when the tensioning mechanism is in the first working state, the first matching portion and the second matching portion cooperate to achieve that the first matching portion drives the second matching portion to rotate synchronously; When the tensioning mechanism is in the second working state, the second matching portion can rotate in the opposite direction relative to the first matching portion driven by the cable.

42. The cable retracting device according to claim 41, characterized in that: The first mating portion is in contact with and mated with the second mating portion, and an elastic member is provided between the first mating portion and the driving assembly, the elastic member being used to provide an elastic force to push the first mating portion toward the second mating portion so that the first mating portion can generate a driving force to drive the second mating portion to rotate.

43. The cable retracting device according to claim 42, characterized in that: The first mating portion includes an insert, and the second mating portion includes a groove, wherein the insert is configured to be at least partially insertable into the groove.

44. The cable retracting device according to claim 43, characterized in that: The differential mechanism includes a mounting seat connected to the drive assembly and rotating synchronously, the mounting seat is provided with an assembly groove and an opening connected to the assembly groove, the insert and the elastic member are arranged in the assembly groove, and the insert is at least partially exposed from the opening to cooperate with the groove.

45. The cable retracting device according to claim 44, characterized in that: The first matching portion further includes a supporting member, wherein the supporting member is disposed between the embedding member and the elastic member, and the elastic member pushes the embedding member through the supporting member.

46. ​​The cable retracting device according to claim 45, characterized in that: The supporting member comprises: A supporting portion abutting against the embedding member; The rod portion is connected to the supporting portion, and the rod portion is penetrated through the elastic member.

47. The cable retracting device according to claim 46, characterized in that: The mounting base comprises: The seat body is provided with the assembly groove; The cover plate is connected to the base body, and the cover plate is provided with the opening.

48. The cable retracting device according to claim 42, characterized in that: The first matching portion includes a first friction member, and the second matching portion includes a second friction member, and the second friction member abuts against the first friction member.

49. The cable retracting device according to claim 41, characterized in that: One of the first mating part and the second mating part includes a first magnetic part, and the other of the first mating part and the second mating part includes a second magnetic part or a magnetic attraction part. The first mating part and the second mating part are magnetically connected so that the first mating part can generate a driving force on the second mating part.

50. The cable retracting device according to claim 41, characterized in that: A plurality of the second matching portions are arranged at intervals along the circumference of the tensioning wheel, and the first matching portion and the second matching portion are arranged correspondingly.

51. The cable retracting device according to claim 31, characterized in that: The tensioning wheel comprises: First spoke; a second spoke connected to the first spoke; Among them, a plurality of radially extending first ribs are provided on the side of the first spoke facing the second spoke, and the plurality of first ribs are arranged at intervals along the circumference of the first spoke; a plurality of radially extending second ribs are provided on the side of the second spoke facing the first spoke, and the plurality of second ribs are arranged at intervals along the circumference of the second spoke, and the first ribs and the second ribs are arranged alternately.

52. The cable retracting device according to claim 40, characterized in that: The driving assembly includes a transmission member and a rotating shaft assembly. The transmission member and the tensioning wheel are both arranged on the rotating shaft assembly. The transmission member is used to cooperate with the wire wheel transmission so that when the wire wheel rotates, the rotating shaft assembly can be driven to rotate through the transmission member, thereby driving the tensioning wheel to rotate.

53. The cable retracting device according to claim 52, characterized in that: The transmission member includes a first gear and at least one second gear, the second gear is meshed with the first gear, and the wire wheel is provided with a third gear for meshing with the second gear.

54. The cable retracting device according to claim 52, characterized in that: The tension wheel is rotatably sleeved on the rotating shaft assembly, the differential mechanism is arranged on the rotating shaft assembly and rotates synchronously with the rotating shaft assembly, and the differential mechanism is connected to the tension wheel; When the tensioning mechanism is in the first working state, the rotating shaft assembly drives the differential mechanism to rotate, and the differential mechanism drives the tensioning wheel to rotate synchronously; When the tensioning mechanism is in the second working state, the cable drives the tensioning wheel to rotate relative to the driving assembly, and the differential mechanism rotates so that the tensioning wheel can rotate relative to the driving assembly.

55. The cable retracting device according to claim 52, characterized in that: The driving assembly also includes a one-way bearing, and the transmission member is connected to the rotating shaft assembly via the one-way bearing. The one-way bearing is used so that the line wheel can drive the rotating shaft assembly to rotate only when the line is released.

56. The cable retracting device according to claim 55, characterized in that: The rotating shaft assembly is interference fit with the inner ring of the one-way bearing, and the transmission member is interference fit with the outer ring of the one-way bearing.

57. The cable retracting device according to claim 52, characterized in that: The drive assembly also includes: A retaining ring is sleeved on the rotating shaft assembly and is located between the transmission member and the tensioning wheel.

58. The cable retracting device according to claim 31, characterized in that: Also includes: A fuse assembly is arranged on the wire outlet path of the wire wheel, the cable passes through the fuse assembly, and the fuse assembly is used to fuse the cable.

59. The cable retracting device according to claim 58, characterized in that: The cable retracting device further comprises a support seat, the wire wheel and the tensioning mechanism are mounted on the support seat, and the fuse assembly comprises: A shell connected to the support seat; A heat conducting member, disposed inside the housing, through which the cable passes; A heating element is in thermal contact with the heat conductive element, and the heating element melts the cable by transferring heat to the heat conductive element.

60. The cable retracting device according to claim 59, characterized in that: The shell is made of heat-insulating material.

61. The cable retracting device according to claim 60, characterized in that: The fuse assembly comprises: The heat insulating member is arranged between the heat conducting member and the shell.

62. A method for operating a cable retracting device, characterized in that: include: The reel turns to release the cable; The driving assembly drives the tensioning wheel to rotate, so as to guide the cable and put the cable in a tensioned state, wherein the driving assembly rotates synchronously with the tensioning wheel, and the pulling force of the cable on the tensioning wheel toward the wire wheel increases; In response to the tension increasing to a critical value, the cable drives the tension wheel to rotate in the opposite direction relative to the driving assembly, so that the tension is reduced.

63. The operating method according to claim 62, characterized in that: In the step of the driving assembly driving the tensioning wheel to rotate, the pay-off speed of the tensioning wheel is greater than the pay-off speed of the wire wheel so that the cable is in a tensioned state, and as the pay-off length of the wire wheel increases, the pulling force of the cable on the tensioning wheel toward the wire wheel gradually increases to a critical value.

64. The operating method according to claim 62, characterized in that: The driving assembly is connected to the tensioning wheel via a differential mechanism, and the differential mechanism enables the tensioning wheel and the driving assembly to generate relative movement; the critical value at least includes the sum of the driving force applied to the tensioning wheel by the differential mechanism and the gravity of the mounted load.

65. The operating method according to claim 62, characterized in that: In the step of driving the tensioning wheel to rotate by the driving assembly, as the pay-off length of the wire wheel increases, the difference between the pay-off speed of the tensioning wheel and the pay-off speed of the wire wheel increases to ΔV1; In the step where the cable drives the tensioning wheel to rotate in the opposite direction relative to the driving assembly, the difference between the pay-off speed of the tensioning wheel and the pay-off speed of the wire wheel is ΔV2; wherein ΔV2 is smaller than ΔV1.

66. The operating method according to claim 65, characterized in that: ΔV2 is equal to 0.

67. A tensioning mechanism, applied to a cable retracting device, the cable retracting device being capable of retracting or releasing a cable, characterized in that: include: A rotatable tensioning wheel; A driving assembly, wherein the driving assembly is configured to drive the tensioning wheel to rotate, and the driving assembly and the tensioning wheel can rotate synchronously or relatively; Wherein, the tensioning mechanism has a first working state and a second working state different from the first working state during the process of the cable taking-up and releasing device releasing the cable; When the tensioning mechanism is in the first working state, the driving assembly drives the tensioning wheel to rotate synchronously; When the tensioning mechanism is in the second working state, the tensioning wheel rotates in the opposite direction relative to the driving assembly.

68. The tensioning mechanism of claim 67, wherein: It also includes a differential mechanism, and the driving assembly is connected to the tensioning wheel through the differential mechanism; the driving assembly drives the tensioning wheel through the differential mechanism so that the tensioning wheel and the driving assembly rotate synchronously or in opposite directions.

69. The tensioning mechanism of claim 68, wherein: The differential mechanism comprises a first matching portion and a second matching portion, wherein the first matching portion is connected to the driving assembly, and the second matching portion is connected to the tensioning wheel, and the driving assembly drives the tensioning wheel to rotate through the matching of the first matching portion and the second matching portion; Wherein, when the tensioning mechanism is in the first working state, the first matching portion and the second matching portion cooperate to achieve that the first matching portion drives the second matching portion to rotate synchronously; When the tensioning mechanism is in the second working state, the second matching portion can rotate in the opposite direction relative to the first matching portion driven by the cable.

70. The tensioning mechanism of claim 69, wherein: The first mating portion is in contact with and mated with the second mating portion, and an elastic member is provided between the first mating portion and the driving assembly, the elastic member being used to provide an elastic force to push the first mating portion toward the second mating portion so that the first mating portion can generate a driving force to drive the second mating portion.

71. The tensioning mechanism of claim 70, wherein: The first mating portion includes an insert, and the second mating portion includes a groove, wherein the insert is configured to be at least partially insertable into the groove.

72. The tensioning mechanism of claim 71, wherein: The differential mechanism includes a mounting seat connected to the drive assembly and rotating synchronously, the mounting seat is provided with an assembly groove and an opening connected to the assembly groove, the insert and the elastic member are arranged in the assembly groove, and the insert is at least partially exposed from the opening to cooperate with the groove.

73. The tensioning mechanism of claim 72, wherein: The first matching portion further includes a supporting member, wherein the supporting member is disposed between the embedding member and the elastic member, and the elastic member pushes the embedding member through the supporting member.

74. The tensioning mechanism of claim 73, wherein: The supporting member comprises: A supporting portion abutting against the embedding member; The rod portion is connected to the supporting portion, and the rod portion is penetrated through the elastic member.

75. The tensioning mechanism of claim 72, wherein: The mounting base comprises: The seat body is provided with the assembly groove; The cover plate is connected to the base body, and the cover plate is provided with the opening.

76. The tensioning mechanism of claim 70, wherein: The first matching portion includes a first friction member, and the second matching portion includes a second friction member, and the second friction member abuts against the first friction member.

77. The tensioning mechanism of claim 69, wherein: One of the first mating part and the second mating part includes a first magnetic part, and the other of the first mating part and the second mating part includes a second magnetic part or a magnetic attraction part. The first mating part and the second mating part are magnetically connected so that the first mating part can generate a driving force on the second mating part.

78. The tensioning mechanism of claim 67, wherein: The tensioning wheel comprises: First spoke; a second spoke connected to the first spoke; Among them, a plurality of radially extending first ribs are provided on the side of the first spoke facing the second spoke, and the plurality of first ribs are arranged at intervals along the circumference of the first spoke; a plurality of radially extending second ribs are provided on the side of the second spoke facing the first spoke, and the plurality of second ribs are arranged at intervals along the circumference of the second spoke, and the first ribs and the second ribs are arranged alternately.

79. The tensioning mechanism of claim 67, wherein: The tensioning mechanism is used to guide the cable on the wire wheel of the cable retracting device and put the cable in a tensioned state. The driving assembly includes a transmission member and a rotating shaft assembly. The transmission member and the tensioning wheel are both arranged on the rotating shaft assembly. The transmission member is used to cooperate with the wire wheel transmission so that when the wire wheel rotates, the rotating shaft assembly can be driven to rotate through the transmission member, thereby driving the tensioning wheel to rotate.

80. The tensioning mechanism of claim 79, wherein: The transmission member includes a first gear and at least one second gear, the second gear is meshed with the first gear, and the wire wheel is provided with a third gear for meshing with the second gear.

81. The tensioning mechanism of claim 79, wherein: The drive assembly also includes: A one-way bearing, wherein the transmission member is connected to the rotating shaft assembly via the one-way bearing, and the one-way bearing is used so that the line wheel can drive the rotating shaft assembly to rotate only when the line is released.

82. The tensioning mechanism of claim 81, wherein: The rotating shaft assembly is interference fit with the inner ring of the one-way bearing, and the transmission member is interference fit with the outer ring of the one-way bearing.

83. The tensioning mechanism of claim 79, wherein: The drive assembly also includes: A retaining ring is sleeved on the rotating shaft assembly and is located between the transmission member and the tensioning wheel.

84. A movable platform, characterized in that: include: Movable subject; as well as The cable retracting device according to any one of claims 1 to 61; The cable retracting device is mounted on the movable body.

85. The movable platform of claim 84, wherein: The movable platform includes at least one of the following: Lifting vehicles, tower cranes and aircraft that can carry loads.

Images