winch

Abstract

This invention provides a winch, comprising: a base; a winding member rotatably mounted on the base about its axis; a drive member mounted on the base and drivenly connected to the winding member to drive the winding member to rotate; and a passive braking assembly including a centrifugal pendulum and a reset member, wherein a first end of the centrifugal pendulum is hinged to the winding member, the hinge axis of the centrifugal pendulum is parallel to the axis of the winding member, and the reset member is disposed between the winding member and the centrifugal pendulum to apply an inward swinging reset force to a second end of the centrifugal pendulum; wherein the passive braking assembly has a braking state and a relaxed state; when the passive braking assembly is in the braking state, the second end of the centrifugal pendulum swings outward and can engage with the base; when the passive braking assembly is in the relaxed state, the second end of the centrifugal pendulum separates from the base. The technical solution provided by this application can solve the problem in related technologies where winches cannot brake in a timely manner when the active braking mechanism or control component malfunctions.

Description

Technical Field

[0001] This invention relates to the field of power construction equipment technology, and more specifically, to a winch. Background Technology

[0002] A winch is a multi-functional construction tool used for erecting overhead high-voltage transmission lines, laying underground cables, and lifting and traction. It is primarily used to provide tensile or traction force. Winches can handle lifting and traction operations under various complex conditions, ensuring the smooth progress of projects and the safety of workers. The working principle of a winch is that an electric motor, internal combustion engine, or other power source drives one or more winding cylinders. These cylinders wind wire ropes, cables, or other wound materials. Through the stretching and contraction of these wound materials, the winch can tension and release cables or wire ropes, or lift and move heavy objects.

[0003] In related technologies, a winch includes a base and a drive unit and a winding unit mounted on the base. During use, the cable or wire needs to be manually wound several turns onto the winding unit beforehand. The drive unit is connected to the winding unit to drive the winding unit to pull the cable wound on the drum. The winch also includes an active braking mechanism and a control unit. The control unit sends a control signal, and upon receiving the control signal, the active braking mechanism brakes the winding unit.

[0004] However, the active braking mechanism in the related technology relies on control signals for braking. The reaction time of the active braking mechanism depends on the response speed of the control component. When the active braking mechanism or control component fails, the active braking mechanism in the related technology cannot lock the winding mechanism in time, making it impossible for the winch to brake in time. Summary of the Invention

[0005] This invention provides a winch to solve the problem in related technologies where winches cannot brake in a timely manner when the active braking mechanism or control components malfunction.

[0006] This invention provides a winch, comprising: a base; a winding member rotatably mounted on the base about its axis; a drive member mounted on the base and drivenly connected to the winding member to drive the winding member to rotate; and a passive braking assembly including a centrifugal pendulum and a reset member, wherein a first end of the centrifugal pendulum is hinged to the winding member, the hinge axis of the centrifugal pendulum is parallel to the axis of the winding member, and the reset member is disposed between the winding member and the centrifugal pendulum to apply an inward swinging reset force to a second end of the centrifugal pendulum; wherein the passive braking assembly has a braking state and a relaxed state, wherein when the passive braking assembly is in the braking state, the second end of the centrifugal pendulum swings outward and can engage with the base, and when the passive braking assembly is in the relaxed state, the second end of the centrifugal pendulum separates from the base.

[0007] Furthermore, the passive braking assembly also includes: a connecting seat, which is connected to and coaxially rotates with the winding component; the first end of the centrifugal pendulum is hinged to the connecting seat; a reset component is disposed between the connecting seat and the centrifugal pendulum; and a brake clasp, which is disposed on the base and surrounds the outside of the centrifugal pendulum. When the passive braking assembly is in the braking state, the second end of the centrifugal pendulum is engaged with the brake clasp; when the passive braking assembly is in the relaxed state, the second end of the centrifugal pendulum is separated from the brake clasp.

[0008] Furthermore, the inner wall of the brake circlip is provided with a brake groove. When the passive braking assembly is in the braking state, the second end of the centrifugal rod engages with the brake groove. When the passive braking assembly is in the relaxed state, the second end of the centrifugal rod separates from the brake groove.

[0009] Furthermore, the passive braking assembly includes multiple centrifugal swing arms and multiple brake slots. The multiple centrifugal swing arms are arranged circumferentially along the winding component, and the multiple brake slots are configured one-to-one with the multiple centrifugal swing arms. The brake slots include a clearance surface and a locking surface arranged at an angle. When the passive braking assembly is in the braking state, the side wall of the centrifugal swing arm facing away from the axis of the winding component fits against the clearance surface, and the end wall of the second end of the centrifugal swing arm abuts against the locking surface in the rotation direction of the winding component.

[0010] Furthermore, the reset component includes: a fixing block disposed on the winding component; a connecting post movably inserted through the fixing block along the radial direction of the winding component, the connecting post being connected to the second end of the centrifugal pendulum rod; and a first spring sleeved on the connecting post and located on the side of the fixing block opposite to the centrifugal pendulum rod, the two ends of the first spring being connected to the fixing block and the connecting post respectively.

[0011] Furthermore, the connecting column includes: a column body, which is movably inserted into the fixing block along the radial direction of the winding component; a limiting boss, which is disposed at one end of the column body away from the centrifugal swing rod, and the two ends of the first spring respectively abut against the fixing block and the limiting boss; and a sliding column, which is connected to the connecting column and extends along the axial direction of the winding component, and a sliding groove is provided on the centrifugal swing rod, which extends along the swing direction of the second end of the centrifugal swing rod, and the sliding column passes through the sliding groove.

[0012] Furthermore, the winding component includes: a winding post, a driving member drivingly connected to the winding post, and a receiving groove provided on the side wall of the winding post; and an elastic support member, which is embedded in the receiving groove and protrudes from the outer side wall of the winding post.

[0013] Furthermore, the elastic support includes: a support block, embedded in a receiving groove, wherein the surface of the support block facing the winding post is adapted to the groove wall of the receiving groove; and a second spring, disposed between the support block and the receiving groove, to apply a force to the support block away from the winding post.

[0014] Furthermore, the base includes a stabilizing seat and a bearing seat, which are respectively disposed at both ends of the winding post. The drive shaft of the drive unit passes through the stabilizing seat, the winding post, and the bearing seat. The drive shaft is rotatable relative to the stabilizing seat and the bearing seat around its axis. When the passive braking assembly is in the braking state, the second end of the centrifugal pendulum is engaged with the stabilizing seat. When the passive braking assembly is in the relaxed state, the second end of the centrifugal pendulum is separated from the stabilizing seat.

[0015] Furthermore, the base also includes a cable inlet tray, which is located below the winding post. The two ends of the cable inlet tray in the axial direction of the winding post are connected to the stabilizing seat and the bearing seat, respectively. The upper surface of the cable inlet tray is a concave curved surface, and a cable inlet is also provided through the cable inlet tray.

[0016] According to the technical solution of this invention, the winch includes a base, a winding component, a driving component, and a passive braking assembly. The driving component drives the winding component to rotate forward around its axis, allowing the winding component to wind the cable for easy unwinding. Under normal conditions, the resetting force applied by the resetting component pulls the second end of the centrifugal pendulum inward, causing the second end of the centrifugal pendulum to separate from the base. The passive braking assembly is then in a relaxed state, and the winding component rotates in the opposite direction to unwind the cable. During the unwinding process of the drive unit driving the winding unit, if a sudden cable rewinding event occurs, due to the failure of the active braking structure of the winch and the continued unwinding when the cable tension is insufficient, once the winding friction between the winding unit and the cable can no longer maintain the state of continuing to wind the cable, the wound cable will burst with a rapid rewinding force in a short period of time. At this time, the cable rewinding speed is fast, and the winding unit is rotated in the opposite direction by the cable rewinding force, causing the second end of the centrifugal pendulum to be thrown outward under the action of centrifugal force. When the rewinding force of the cable or rope exceeds the preset threshold, the second end of the centrifugal pendulum is engaged with the base, thereby restricting the rotation of the winding unit relative to the base. The passive braking component is used to brake and restrict the rotation of the winding unit relative to the base, so that it overcomes the cable rewinding force and stops being pulled by the cable rewinding. Therefore, the passive braking assembly, through mechanical connection and flexible cooperation, does not rely on external control signals and complex control systems. When the cable begins to generate rapid rewinding force and rewinds, the passive braking assembly quickly and timely switches to the braking state to limit the rewinding parts from being pulled and reversed by the rewinding cable. This provides timely protection for the drive components and the rewinding parts, and at the same time, it can respond quickly and automatically brake in the event of equipment failure or emergency, reducing the risk of accidents, providing reliable safety, avoiding forced interruption of cable laying operations, avoiding impact on construction progress and efficiency, and avoiding equipment loss of control that could cause injury to operators or people in the vicinity. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a winch provided according to an embodiment of the present invention is shown;

[0019] Figure 2 A side view of a winch provided according to an embodiment of the present invention is shown;

[0020] Figure 3 It shows Figure 2 Sectional view at point AA;

[0021] Figure 4 A schematic diagram of the passive braking assembly of a winch according to an embodiment of the present invention is shown;

[0022] Figure 5 It shows Figure 4 A magnified view of a section at point B.

[0023] The above figures include the following reference numerals:

[0024] 10. Base; 11. Stabilizer; 12. Bearing housing; 13. Cable tray; 131. Concave surface; 132. Cable inlet; 14. Support platform; 15. Motor base;

[0025] 20. Winding component; 21. Winding post; 211. Receiving groove; 22. Elastic support component; 221. Support block; 222. Second spring;

[0026] 30. Driving component; 31. Drive shaft; 32. Drive motor;

[0027] 40. Passive braking assembly; 41. Centrifugal pendulum; 411. Slide groove; 42. Reset component; 421. Fixing block; 422. Connecting column; 4221. Column body; 4222. Limiting boss; 4223. Slide column; 423. First spring; 43. Connecting seat; 44. Brake ring; 441. Brake groove; 4411. Clearance surface; 4412. Engaging surface. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In related technologies, when the active braking structure of the winch fails and the cable tension is insufficient, it continues to unwind the cable. Once the winding friction between the winding device and the cable can no longer maintain the state of winding the cable, the wound cable will burst with rapid rewinding force in a short period of time, pulling the winding device to rotate in the opposite direction. This process may cause injury to the surrounding workers. At the same time, even if the drive mechanism is activated in time to wind up the cable in the rewinding process, it still takes time to sort out the cable.

[0030] like Figures 1 to 5 As shown, this embodiment of the invention provides a winch, which includes a base 10, a winding member 20, a driving member 30, and a passive braking assembly 40. The winding member 20 is rotatably mounted on the base 10 about its axis. The driving member 30 is mounted on the base 10 and is drivenly connected to the winding member 20 to drive the winding member 20 to rotate. The passive braking assembly 40 includes a centrifugal pendulum 41 and a reset member 42. The first end of the centrifugal pendulum 41 is hinged to the winding member 20, and the hinge axis of the centrifugal pendulum 41 is parallel to the axis of the winding member 20. The reset member 42 is disposed between the winding member 20 and the centrifugal pendulum 41 to apply an inward swinging reset force to the second end of the centrifugal pendulum 41. The passive braking assembly 40 has a braking state and a relaxed state. When the passive braking assembly 40 is in the braking state, the second end of the centrifugal pendulum 41 swings outward and can engage with the base 10. When the passive braking assembly 40 is in the relaxed state, the second end of the centrifugal pendulum 41 separates from the base 10.

[0031] The winch provided in this embodiment includes a base 10, a winding member 20, a drive member 30, and a passive braking assembly 40. The drive member 30 drives the winding member 20 to rotate forward around its axis, allowing the winding member 20 to wind the cable for easy unwinding. Under normal conditions, the reset force applied by the reset member 42 pulls the second end of the centrifugal pendulum 41 inward, causing the second end of the centrifugal pendulum 41 to separate from the base 10. The passive braking assembly 40 is in a relaxed state, and the winding member 20 rotates in the opposite direction to unwind the cable. During the process of the drive unit 30 driving the winding unit 20 to unwind the cable, if a sudden cable rewinding event occurs, due to the failure of the active braking structure of the winch and the continued unwinding when the cable tension is insufficient, once the winding friction between the winding unit 20 and the cable cannot maintain the state of continuing to wind the cable, the wound cable will burst with a rapid rewinding force in a short period of time. At this time, the cable rewinding speed is fast, and the winding unit 20 is rotated in the opposite direction by the cable rewinding force, causing the second end of the centrifugal swing rod 41 to be thrown outward under the action of centrifugal force. When the rewinding force of the cable or rope exceeds the preset threshold, the second end of the centrifugal swing rod 41 is engaged with the base 10, thereby restricting the rotation of the winding unit 20 relative to the base 10. The passive braking component 40 is used to brake and restrict the rotation of the winding unit 20 relative to the base 10, so that it overcomes the force of cable rewinding and stops being pulled by cable rewinding. Therefore, the passive braking assembly 40, through mechanical connection and flexible cooperation, does not rely on external control signals and complex control systems. When the cable begins to generate rapid rewinding force and rewinds, the passive braking assembly 40 quickly and timely switches to the braking state to limit the reel 20 from being pulled and reversed by the rewinding cable. This provides timely protection for the drive unit 30 and the reel 20, and at the same time, it can respond quickly and automatically brake in the event of equipment failure or emergency, reducing the risk of accidents, providing reliable safety, avoiding forced interruption of cable laying operations, avoiding impact on construction progress and efficiency, and avoiding equipment loss of control that could cause injury to operators or surrounding personnel.

[0032] In this embodiment, the winch also includes a control unit and an active braking unit. Under normal operating conditions, the active braking unit can provide more precise braking and a wider range of braking force adjustment under the control signal of the control unit, which is suitable for operations that require fine control. This embodiment uses an active braking unit and a passive braking assembly 40 in combination. The active braking unit is responsible for braking control during normal operation, while the passive braking assembly 40 serves as a backup system for emergency braking, providing dual safety protection and ensuring the safe and efficient operation of the winch under various complex conditions.

[0033] It should be noted that, in this embodiment, "inner" in the inner and outer directions refers to the direction along the radial direction of the winding member 20 pointing towards the axis of the winding member 20, and "outer" in the inner and outer directions refers to the direction along the radial direction of the winding member 20 away from the axis of the winding member 20.

[0034] like Figure 4 As shown, the passive braking assembly 40 also includes a connecting seat 43 and a brake ring 44. The connecting seat 43 is connected to the winding member 20 and rotates coaxially. The first end of the centrifugal pendulum 41 is hinged to the connecting seat 43. The reset member 42 is disposed between the connecting seat 43 and the centrifugal pendulum 41. The brake ring 44 is disposed on the base 10 and surrounds the outside of the centrifugal pendulum 41. When the passive braking assembly 40 is in the braking state, the second end of the centrifugal pendulum 41 is engaged with the brake ring 44. When the passive braking assembly 40 is in the relaxed state, the second end of the centrifugal pendulum 41 is separated from the brake ring 44. During the unwinding process of the drive unit 30 driving the winding unit 20, if a sudden cable rewinding event occurs, the winding unit 20 will rotate in the opposite direction due to the cable rewinding force, which will also cause the connecting seat 43 to rotate in the opposite direction. This will cause the second end of the centrifugal swing rod 41 to be thrown outward under the action of centrifugal force. When the rewinding force of the cable or rope exceeds a preset threshold, the second end of the centrifugal swing rod 41 will overcome the reset force of the reset unit 42 and engage with the brake ring 44, restricting the rotation of the connecting seat 43 relative to the brake ring 44, thereby restricting the rotation of the winding unit 20 relative to the base 10. Under normal conditions or when the cable rewinding force disappears, the reset force applied by the reset unit 42 will pull the second end of the centrifugal swing rod 41 inward, causing the second end of the centrifugal swing rod 41 to separate from the brake ring 44. The passive braking assembly 40 will be in a relaxed state, at which time the winding unit 20 will rotate in the opposite direction to perform the unwinding operation.

[0035] like Figure 4 As shown, the inner wall of the brake circlip 44 is provided with a brake groove 441. When the passive braking assembly 40 is in the braking state, the second end of the centrifugal rod 41 engages with the brake groove 441. When the passive braking assembly 40 is in the relaxed state, the second end of the centrifugal rod 41 disengages from the brake groove 441. By switching the engagement state between the second end of the centrifugal rod 41 and the brake groove 441, the passive braking assembly 40 can be switched between the braking state and the relaxed state.

[0036] like Figure 4As shown, the passive braking assembly 40 includes multiple centrifugal swing arms 41 and multiple brake slots 441. The multiple centrifugal swing arms 41 are arranged circumferentially along the winding member 20, and the multiple brake slots 441 are correspondingly arranged one-to-one with the multiple centrifugal swing arms 41. The brake slots 441 include a clearance surface 4411 and a engagement surface 4412 arranged at an angle. When the passive braking assembly 40 is in the braking state, the side wall of the centrifugal swing arm 41 facing away from the axis of the winding member 20 fits against the clearance surface 4411, and the end wall of the second end of the centrifugal swing arm 41 abuts against the engagement surface 4412 in the rotation direction of the winding member 20. By using the above-mentioned multiple centrifugal swing arms 41 and multiple brake slots 441, when the passive braking assembly 40 is in the braking state, the one-to-one cooperation of the multiple centrifugal swing arms 41 and multiple brake slots 441 can improve the braking reliability provided by the passive braking assembly 40. When the second end of the centrifugal pendulum 41 swings outward under the action of centrifugal force, the clearance surface 4411 avoids the centrifugal pendulum 41. When the side wall of the centrifugal pendulum 41 away from the axis of the winding member 20 is in contact with the clearance surface 4411, if the winding member 20 continues to reverse, the end wall of the second end of the centrifugal pendulum 41 can rotate together with the winding member 20 until the end wall of the second end of the centrifugal pendulum 41 and the locking surface 4412 abut against each other in the rotation direction of the winding member 20, so as to restrict the rotation of the winding member 20 relative to the base 10.

[0037] Specifically, in this embodiment, when the passive braking assembly 40 is in a braking state, the end wall of the second end of the centrifugal swing arm 41 abuts against the snap-fit ​​surface 4412 in the reverse rotation direction of the winding member 20 to restrict the reverse rotation of the winding member 20 relative to the base 10.

[0038] like Figure 5 As shown, the reset component 42 includes a fixing block 421, a connecting post 422, and a first spring 423. The fixing block 421 is disposed on the winding component 20. The connecting post 422 is movably inserted through the fixing block 421 along the radial direction of the winding component 20. The connecting post 422 is connected to the second end of the centrifugal pendulum rod 41. The first spring 423 is sleeved on the connecting post 422 and located on the side of the fixing block 421 opposite to the centrifugal pendulum rod 41. The two ends of the first spring 423 are respectively connected to the fixing block 421 and the connecting post 422. The reset component 42 with the above structure facilitates the assembly of the reset component 42. When the second end of the centrifugal pendulum rod 41 swings, the connecting post 422 moves relative to the fixing block 421 along the radial direction of the winding component 20.

[0039] like Figures 1 to 5As shown, the connecting column 422 includes a column body 4221, a limiting boss 4222, and a sliding column 4223. The column body 4221 is movably inserted into the fixing block 421 along the radial direction of the winding member 20. The limiting boss 4222 is located at one end of the column body 4221 away from the centrifugal swing rod 41. The two ends of the first spring 423 abut against the fixing block 421 and the limiting boss 4222, respectively. The sliding column 4223 is connected to the connecting column 422 and extends along the axial direction of the winding member 20. A sliding groove 411 is provided on the centrifugal swing rod 41. The sliding groove 411 extends along the swing direction of the second end of the centrifugal swing rod 41. The sliding column 4223 passes through the sliding groove 411. The connecting column 422 with the above structure facilitates the installation of the first spring 423, and when the second end of the centrifugal pendulum 41 swings, the sliding column 4223 moves in the sliding groove 411 along the extension direction of the sliding groove 411, thereby improving the connection life of the connecting column 422 and the centrifugal pendulum 41.

[0040] like Figures 1 to 5 As shown, the cable reel 20 includes a reel post 21 and an elastic support member 22. The drive member 30 is drivenly connected to the reel post 21. A receiving groove 211 is provided on the side wall of the reel post 211. The elastic support member 22 is embedded in the receiving groove 211 and protrudes from the outer side wall of the reel post 21. When multiple turns of cable are wound on the reel post 21, the elastic support member 22 applies an outward expansion and support force to the wound cable, increasing the friction between the wound cable and the cable reel 20, and improving the stability of the cable wound on the cable reel 20. Even when the cable is rewound, due to the expansion and support of the elastic support member 22, the cable reel 20 quickly stabilizes the wound cable, which can be used in conjunction with the passive braking mechanism to brake the cable rewinding.

[0041] like Figures 1 to 5 As shown, the elastic support 22 includes a support block 221 and a second spring 222. The support block 221 is embedded in the receiving groove 211, and the surface of the support block 221 facing the winding post 21 is adapted to the groove wall of the receiving groove 211. The second spring 222 is disposed between the support block 221 and the receiving groove 211 to apply a force to the support block 221 away from the winding post 211. With the above-described split structure, if the elastic support 22 wears due to long-term friction with the cable, it can be repaired by replacing the support block 221, and the second spring 222 can be used to apply a force to the support block 221 away from the winding post 21.

[0042] Specifically, in this embodiment, the middle part of the groove wall of the receiving groove 211 is recessed towards the axis of the winding post, and the second spring 222 is disposed in the middle part of the groove wall of the receiving groove 211.

[0043] like Figure 3As shown, the base 10 includes a stabilizing seat 11 and a bearing seat 12, which are respectively disposed at both ends of the winding post 21. The drive shaft 31 of the drive member 30 passes through the stabilizing seat 11, the winding post 21, and the bearing seat 12. The drive shaft 31 is rotatable relative to the stabilizing seat 11 and the bearing seat 12 about its axis. When the passive braking assembly 40 is in the braking state, the second end of the centrifugal pendulum 41 is engaged with the stabilizing seat 11. When the passive braking assembly 40 is in the relaxed state, the second end of the centrifugal pendulum 41 is separated from the stabilizing seat 11. With the above-described structure, the drive shaft 31 passes through the stabilizing seat 11, the winding post 21, and the bearing seat 12, and is rotatable relative to the stabilizing seat 11 and the bearing seat 12 about its axis, thereby improving the rotational stability of the winding post 21.

[0044] In this embodiment, the brake circlip 44 is embedded in and connected to the stabilizer 11, the connecting seat 43 is rotatably embedded in the stabilizer 11, the bearing seat 12 includes a seat body and a bearing disposed on the seat body, the outer ring of the bearing is connected to the seat body, and the inner ring of the bearing is sleeved on the drive shaft 31 and connected to the drive shaft 31.

[0045] like Figures 1 to 3 As shown, the base 10 also includes a cable inlet tray 13, which is located below the winding post 21. The two ends of the cable inlet tray 13 along the axial direction of the winding post 21 are connected to the stabilizing seat 11 and the bearing seat 12, respectively. The upper surface of the cable inlet tray 13 is a concave curved surface 131, and a cable inlet 132 is also provided through the cable inlet tray 13. With the above-described structure, the concave curved surface 131 surrounds the outside of the winding post 21, allowing the cable to pass through the cable inlet 132, facilitating cable stabilization during cable winding or unwinding.

[0046] like Figures 1 to 3 As shown, the base 10 also includes a support platform 14, which is disposed at the bottom of the wire inlet tray 13. The two ends of the support platform 14 in the axial direction of the winding component 20 are respectively connected to the stabilizing seat 11 and the bearing seat 12.

[0047] like Figures 1 to 3 As shown, the drive unit 30 includes a drive motor 32, and the base 10 also includes a motor seat 15 disposed at the bottom of the drive motor 32. The motor shaft of the drive motor 32 is drivenly connected to the drive shaft 31.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0050] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A winch, characterized in that, The winch includes: Base (10); A winding component (20) is rotatably mounted on the base (10) about its axis; A drive unit (30) is disposed on the base (10), and the drive unit (30) is driven to be connected to the winding unit (20) to drive the winding unit (20) to rotate; The passive braking assembly (40) includes a centrifugal pendulum (41) and a reset member (42). The first end of the centrifugal pendulum (41) is hinged to the winding member (20), and the hinge axis of the centrifugal pendulum (41) is parallel to the axis of the winding member (20). The reset member (42) is disposed between the winding member (20) and the centrifugal pendulum (41) to apply an inward swinging reset force to the second end of the centrifugal pendulum (41). The passive braking assembly (40) has a braking state and a relaxed state. When the passive braking assembly (40) is in the braking state, the second end of the centrifugal pendulum (41) swings outward and can engage with the base (10). When the passive braking assembly (40) is in the relaxed state, the second end of the centrifugal pendulum (41) separates from the base (10). The reset component (42) includes: A fixing block (421) is provided on the winding member (20); A connecting post (422) is movably inserted into the fixing block (421) along the radial direction of the winding member (20), and the connecting post (422) is connected to the second end of the centrifugal pendulum (41); The first spring (423) is sleeved on the connecting post (422) and located on the side of the fixed block (421) away from the centrifugal pendulum (41). The two ends of the first spring (423) are respectively connected to the fixed block (421) and the connecting post (422). The connecting post (422) includes: The column (4221) is movably inserted into the fixing block (421) along the radial direction of the winding member (20). A limiting boss (4222) is provided at one end of the column (4221) away from the centrifugal pendulum (41), and the two ends of the first spring (423) abut against the fixing block (421) and the limiting boss (4222) respectively. A sliding column (4223) is connected to the connecting column (422) and extends along the axial direction of the winding member (20). A sliding groove (411) is provided on the centrifugal pendulum (41). The sliding groove (411) extends along the swing direction of the second end of the centrifugal pendulum (41). The sliding column (4223) passes through the sliding groove (411).

2. The winch according to claim 1, characterized in that, The passive braking assembly (40) also includes: The connecting seat (43) is connected to the winding component (20) and rotates coaxially. The first end of the centrifugal pendulum (41) is hinged to the connecting seat (43). The reset component (42) is disposed between the connecting seat (43) and the centrifugal pendulum (41). A brake clasp (44) is disposed on the base (10) and surrounds the outside of the centrifugal pendulum (41). When the passive braking assembly (40) is in the braking state, the second end of the centrifugal pendulum (41) is engaged with the brake clasp (44). When the passive braking assembly (40) is in the relaxed state, the second end of the centrifugal pendulum (41) is separated from the brake clasp (44).

3. The winch according to claim 2, characterized in that, The inner wall of the brake clasp (44) is provided with a brake groove (441). When the passive braking assembly (40) is in the braking state, the second end of the centrifugal pendulum (41) is engaged with the brake groove (441). When the passive braking assembly (40) is in the relaxed state, the second end of the centrifugal pendulum (41) is separated from the brake groove (441).

4. The winch according to claim 3, characterized in that, The passive braking assembly (40) includes a plurality of centrifugal swing rods (41) and a plurality of brake slots (441). The plurality of centrifugal swing rods (41) are arranged circumferentially along the winding member (20). The plurality of brake slots (441) are provided one-to-one with the plurality of centrifugal swing rods (41). The brake slot (441) includes a clearance surface (4411) and a snap-fit ​​surface (4412) arranged at an angle. When the passive braking assembly (40) is in the braking state, the side wall of the centrifugal swing rod (41) away from the axis of the winding member (20) fits against the clearance surface (4411). The end wall of the second end of the centrifugal swing rod (41) abuts against the snap-fit ​​surface (4412) in the rotation direction of the winding member (20).

5. The winch according to claim 1, characterized in that, The winding component (20) includes: The winding post (21) is driven by the driving member (30) and the winding post (21). The side wall of the winding post (21) is provided with a receiving groove (211). The elastic support (22) is embedded in the receiving groove (211) and protrudes from the outer wall of the winding post (21).

6. The winch according to claim 5, characterized in that, The elastic support member (22) includes: A support block (221) is embedded in the receiving groove (211), and the surface of the support block (221) facing the winding post (21) is adapted to the groove wall of the receiving groove (211); A second spring (222) is disposed between the support block (221) and the receiving groove (211) to apply a force to the support block (221) away from the winding post (21).

7. The winch according to claim 5, characterized in that, The base (10) includes a stabilizing seat (11) and a bearing seat (12), which are respectively disposed at both ends of the winding post (21). The drive shaft (31) of the drive member (30) passes through the stabilizing seat (11), the winding post (21) and the bearing seat (12). The drive shaft (31) is rotatable relative to the stabilizing seat (11) and the bearing seat (12) around its axis. When the passive braking assembly (40) is in the braking state, the second end of the centrifugal pendulum (41) is engaged with the stabilizing seat (11). When the passive braking assembly (40) is in the relaxed state, the second end of the centrifugal pendulum (41) is separated from the stabilizing seat (11).

8. The winch according to claim 7, characterized in that, The base (10) also includes a cable tray (13), which is located below the winding post (21). The cable tray (13) is connected to the stabilizing seat (11) and the bearing seat (12) at both ends of the winding post (21) in the axial direction. The upper surface of the cable tray (13) is a concave curved surface (131), and a cable inlet (132) is also provided through the cable tray (13).

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