Rotary clutch mechanism of winch and winch

Abstract

The utility model discloses a rotary clutch mechanism of a winch and the winch, belongs to the field of winches, solves the problem that abrasion is easily caused between a spring and a clutch mandrel, and adopts the technical scheme that the rotary clutch mechanism mainly comprises a handle, a pull rod and a clutch seat, a reset piece is sleeved on the peripheral side of the pull rod, the reset piece is limited between the pull rod and the clutch seat and enables the pull rod to have a moving trend away from the handle, the pull rod is rotatably connected with the handle, the handle can rotate around the axial direction of the pull rod, and a sliding way and a sliding block are arranged on the contact portion of the handle and the clutch seat. The handle rotates relative to the clutch base to drive the sliding block to move along the sliding way so that the pull rod can slide back and forth in the axial direction of the clutch base. The utility model is mainly used for slowing down the relative rotation between the pull rod and the reset piece.

Description

Technical Field

[0001] The utility model discloses a winch rotation clutch mechanism and a winch, belonging to the technical field of winches. Background Art

[0002] Winch is widely used in various industries. Winch usually includes a driver and a drum. The traction rope is hung on the object to be towed. The driver controls the rotation of the drum, thereby driving the traction rope to be wound around the drum, so that the object to be towed moves with the traction rope.

[0003] In order to improve the safety of winch operation, a rotary clutch is usually provided on the winch. When the winch is out of control, the rotary clutch can block the power transmission between the driver and the drum, preventing the drum from continuously retracting and releasing the traction rope in an out-of-control state.

[0004] For example, patent CN202245877U discloses an electric winch clutch, including a clutch rotating handle, a clutch bushing, a clutch core shaft and a clutch gear. The clutch bushing is provided with a center hole, and the clutch core shaft slides with the center hole. A spring is mounted on the outer sleeve of the clutch core shaft, and the lower end of the spring is abutted against the radial convex ring of the clutch core shaft, and the upper end is abutted against the step surface of the center hole. The upper end surface of the clutch bushing is provided with a cam surface, and the cam surface includes a high end, a low end and an inclined surface formed between the high end and the low end. An axial protrusion is provided in the clutch rotating handle. The clutch rotating handle rotates relative to the clutch bushing, and the axial protrusion slides along the cam surface, causing the axial protrusion to move to the high end or the low end. When the axial protrusion is at the low end, the clutch core shaft is combined with the clutch gear and limits the rotation of the clutch gear, and the reducer works normally. When the axial protrusion is at the high end, the clutch core shaft is away from the clutch gear, the spring is compressed, and the power of the driver cannot be transmitted to the drum.

[0005] However, in the above patent, the clutch core shaft is fixedly connected to the clutch rotating handle. When the clutch rotating handle is rotated, the clutch core shaft rotates synchronously with the clutch rotating handle. During the rotation of the clutch core shaft, the radial convex ring of the clutch core shaft will produce friction with the spring. Especially in the process of the axial protrusion sliding to the high end, the spring is continuously compressed, and the force of the spring on the radial convex ring increases. At this time, the spring will produce resistance to the rotation of the clutch core shaft, and will also increase the friction between the spring and the radial convex ring, which will make it easier for the radial convex ring and the spring to wear, and easily affect the service life of the radial convex ring and the spring. Utility Model Content

[0006] The purpose of the utility model is to solve the problem of easy wear between the spring and the clutch core shaft, and to this end provide a rotary clutch mechanism of a winch and a winch, which can effectively slow down the relative rotation between the pull rod and the reset member.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A rotary clutch mechanism for a winch includes a handle, a pull rod and a clutch seat. One end of the pull rod passes through the clutch seat and is connected to the handle. A reset member is mounted on the outer peripheral side of the pull rod. The reset member is restricted between the pull rod and the clutch seat and causes the pull rod to have a movement tendency away from the handle. The pull rod is rotatably connected to the handle, and the handle can rotate around the axial direction of the pull rod. A slideway and a slider are provided at the contact part between the handle and the clutch seat. The rotation of the handle relative to the clutch seat drives the slider to move along the slideway, so that the pull rod slides back and forth along the axial direction of the clutch seat.

[0009] The beneficial effects of adopting the utility model are:

[0010] The handle described in the utility model is rotatably connected to the pull rod. When the handle is rotated relative to the clutch seat, the handle can also rotate around the axial direction of the pull rod, reducing the amplitude of the pull rod rotating with the rotation of the handle, and thus the pull rod can be kept fixed relative to the clutch seat as much as possible, that is, reducing the relative rotation angle of the pull rod and the reset member, reducing the sliding friction between the reset member and the pull rod, and reducing the possibility of wear of the reset member and the pull rod due to sliding friction, which helps to extend the service life of the reset member and the pull rod; in addition, the handle will not drive the pull rod to rotate during the rotation process, so the handle will not be affected by the elastic force of the reset member during the rotation process, thereby reducing the resistance encountered by the handle during the rotation process, making the rotation of the handle easier and more labor-saving, so that the handle can be quickly rotated into place.

[0011] Preferably, the handle is provided with a mounting groove, the pull rod includes a connecting portion extending into the mounting groove, an annular groove is provided on the outer periphery of the connecting portion, and the handle is provided with a stopper extending into the annular groove to prevent the connecting portion from being disengaged from the mounting groove. Using the aforementioned technical solution, the handle forms a rotational engagement with the annular groove of the connecting portion via the stopper, allowing the handle to rotate relative to the pull rod. The mating structure of the handle and the pull rod is relatively simple, making the connection between the handle and the pull rod more convenient and quick. Furthermore, the stopper extends into the annular groove to prevent the pull rod from being disengaged from the mounting groove, making the connection between the handle and the pull rod more stable and reliable.

[0012] Preferably, the width of the annular groove in the axial direction of the pull rod is greater than the width of the stop member in the axial direction of the pull rod. The aforementioned technical solution allows the pull rod to slide in the axial direction. When the reset member is in a compressed state, the handle rotates relative to the clutch seat. The elastic force of the reset member acts on the pull rod, and the pull rod can push the handle under the action of its own weight and elastic force, so that the handle can be smoothly reset, reducing the possibility of the handle getting stuck.

[0013] Preferably, there is a gap between the top wall of the mounting groove away from the clutch seat and the end of the connecting portion.

[0014] Preferably, the handle has a threaded hole on its outer surface that communicates with the mounting slot, and the stopper is threadedly connected to the threaded hole. This technical solution allows for a detachable connection between the stopper and the handle, thereby simplifying installation and removal of the pull rod and handle. This reduces the difficulty of repairing the pull rod when it needs to be replaced, improving maintenance efficiency.

[0015] Preferably, the outer surface of the handle is provided with a radially extending grip, and the length of the threaded hole is perpendicular to the length of the grip. The above technical solution can reduce the length of the threaded hole, thereby shortening the length of the limiter, which helps to improve the installation and removal efficiency of the limiter.

[0016] Preferably, the end of the handle close to the clutch seat is provided with a receiving groove for the clutch seat to extend into, the slider is arranged on the inner wall of the receiving groove, and the slideway is arranged on the outer surface of the clutch seat.

[0017] Preferably, the slideway has a first end and a second end, the first end being farther from the handle than the second end, and a transition slope being provided between the first and second ends, with the lowest point of the second end being lower than the highest point of the transition slope. Using the aforementioned technical solution, when the slider slides to the highest point of the slideway, the second end can serve to position the slider, effectively preventing the slider from arbitrarily disengaging from the second end, thereby improving the positioning stability of the handle and the clutch seat.

[0018] Preferably, the clutch seat is provided with a through hole for the pull rod to pass through, the through hole is provided with an abutment surface near the inner wall of the handle, the outer peripheral side of the pull rod is provided with a radially protruding step surface, and the reset member is confined between the abutment surface and the step surface.

[0019] The utility model also shows a winch, including a driver, a drum, a planetary reduction mechanism and a rotary clutch mechanism. The planetary reduction mechanism includes a planetary gear set and a clutch ring gear. The driver is connected to the planetary gear set in transmission. The clutch ring gear is mounted on the outer peripheral side of the planetary gear set and is connected to the planetary gear set in transmission. The rotary clutch mechanism has an engaged state and a disengaged state. When the rotary clutch mechanism is in the engaged state, the rotary clutch mechanism limits the rotation of the clutch ring gear so that the driver drives the drum to rotate. When the rotary clutch mechanism is in the disengaged state, the rotary clutch mechanism is separated from the clutch ring gear, and the clutch ring gear rotates with the planetary gear set to disconnect the power transmission between the driver and the drum. The rotary clutch mechanism adopts the rotary clutch mechanism of the winch described in any one of the above items.

[0020] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is an exploded view of a rotary clutch mechanism of a winch according to the present invention;

[0023] Figure 2 This is a cross-sectional view of a rotary clutch mechanism of a winch in the utility model. Figure 1 ;

[0024] Figure 3 This is a cross-sectional view of a rotary clutch mechanism of a winch in the utility model. Figure 2 ;

[0025] Figure 4 This is a structural diagram of a handle in a rotary clutch mechanism of a winch according to the present invention;

[0026] Figure 5 This is a structural schematic diagram of a clutch seat in a rotary clutch mechanism of a winch according to the present invention;

[0027] Figure 6 This is a cross-sectional view of a rotary clutch mechanism of a winch according to the present invention.

[0028] Figure markings: 1. handle; 11. grip; 12. mounting groove; 13. threaded hole; 14. limit member; 15. accommodating groove; 151. slider; 2. clutch seat; 21. slideway; 211. first end; 212. second end; 213. transition slope; 22. through hole; 221. abutment surface; 3. pull rod; 31. connecting end; 32. annular groove; 33. step surface; 4. reset member; 51. planetary gear set; 52. clutch ring gear; 53. output shaft. DETAILED DESCRIPTION

[0029] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless expressly limited otherwise.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Example 1:

[0034] like Figures 1 to 5 As shown, this embodiment shows a rotary clutch mechanism of a winch, including a handle 1, a pull rod 3 and a clutch seat 2. One end of the pull rod 3 passes through the clutch seat 2 and is connected to the handle 1. A reset member 4 is mounted on the outer peripheral side of the pull rod 3. The reset member 4 is restricted between the pull rod 3 and the clutch seat 2 and makes the pull rod 3 have a movement tendency away from the handle 1. The pull rod 3 is rotatably connected to the handle 1, and the handle 1 can rotate around the axial direction of the pull rod 3. The contact part between the handle 1 and the clutch seat 2 is provided with a slide 21 and a slider 151. The rotation of the handle 1 relative to the clutch seat 2 drives the slider 151 to move along the slide 21, so that the pull rod 3 slides back and forth along the axial direction of the clutch seat 2.

[0035] The handle 1 in this embodiment is rotatably connected to the pull rod 3. When the handle 1 rotates relative to the clutch seat 2, the handle 1 can also rotate around the axial direction of the pull rod 3, reducing the rotation amplitude of the pull rod 3 as the handle 1 rotates, thereby making the pull rod 3 remain fixed relative to the clutch seat 2 as much as possible, that is, reducing the relative rotation angle of the pull rod 3 and the reset member 4, reducing the sliding friction between the reset member 4 and the pull rod 3, and reducing the possibility of wear of the reset member 4 and the pull rod 3 due to sliding friction, which helps to extend the service life of the reset member 4 and the pull rod 3; in addition, the handle 1 will not drive the pull rod 3 to rotate during the rotation process, so the handle 1 will not be affected by the elastic force of the reset member 4 during the rotation process, thereby reducing the resistance encountered by the handle 1 during the rotation process, making the rotation of the handle 1 easier and more labor-saving, so that the handle 1 can be quickly rotated into place.

[0036] like Figure 2 and Figure 3As shown, in this embodiment, the handle 1 is provided with a mounting groove 12, the pull rod 3 includes a connecting portion, the connecting portion of the pull rod 3 extends into the mounting groove 12, and the outer peripheral side of the connecting portion is provided with an annular groove 32 distributed along the circumference of the pull rod 3. A limiting member 14 is provided in the handle 1, and the end of the limiting member 14 extends into the annular groove 32, thereby limiting the connection portion from being separated from the mounting groove 12. When the handle 1 is connected to the pull rod 3, the connecting portion of the pull rod 3 extends into the mounting groove 12, and the end of the limiting member 14 extends into the annular groove 32. At this time, the handle 1 and the pull rod are connected. When the handle 1 and the pull rod 3 rotate relative to each other, the limiting member 14 can slide along the annular groove 32, thereby realizing the relative rotation of the handle 1 and the pull rod 3. The handle 1 forms a rotational fit with the annular groove 32 of the connecting portion through the limiting member 14, so that the handle 1 can rotate relative to the pull rod 3. The matching structure of the handle 1 and the pull rod 3 is relatively simple, making the connection between the handle 1 and the pull rod 3 more convenient and quick. In addition, the limiting member 14 extends into the annular groove 32, which can limit the pull rod 3 from being separated from the mounting groove 12, making the connection between the handle 1 and the pull rod 3 more stable and reliable.

[0037] like Figures 1 to 3 As shown, the handle 1 in this embodiment has a grip 11 that is convenient for the user to hold. The grip 11 is arranged on the outer surface of the handle 1 and extends along the radial direction of the handle 1. The grip 11 can facilitate the user to apply external force to the handle 1, making the rotation of the handle 1 simpler and more labor-saving; in addition, the outer surface of the handle 1 is provided with a threaded hole 13 connected to the installation groove 12, and the length direction of the threaded hole 13 is perpendicular to the length direction of the grip 11, thereby reducing the length of the threaded hole 13, thereby shortening the length of the limiter 14, and helping to improve the installation and disassembly efficiency of the limiter 14; secondly, the limiter 14 is a flat head screw, and the limiter 14 is threadedly connected to the threaded hole 13, thereby realizing a detachable connection between the limiter 14 and the handle 1, thereby simplifying the installation and disassembly of the pull rod 3 and the handle 1. When the pull rod 3 needs to be replaced, the maintenance difficulty of the pull rod 3 can be reduced, and the maintenance efficiency of the pull rod 3 can be improved.

[0038] like Figure 3 As shown, in this embodiment, the width of the annular groove 32 in the axial direction of the pull rod 3 is greater than the width of the limit member 14 in the axial direction of the pull rod 3. There is a gap between the top wall of the mounting groove 12 away from the clutch seat 2 and the end of the connecting portion, so that the pull rod 3 can slide along the axial direction. When the reset member 4 is in the compressed state, after the handle 1 rotates relative to the clutch seat 2, the elastic force of the reset member 4 acts on the pull rod 3, and the pull rod 3 can push the handle 1 under the action of its own gravity and elastic force, so that the handle 1 can be smoothly reset, reducing the possibility of the handle 1 getting stuck.

[0039] like Figure 4 and Figure 5As shown, in this embodiment, the handle 1 is provided with a receiving groove 15 at the end facing the clutch seat 2, and the receiving groove 15 can be used for the end of the clutch seat 2 to extend into. The inner wall of the receiving groove 15 is provided with a slider 151, and the outer peripheral side of the end of the clutch seat 2 extending into the receiving groove 15 is provided with a slide 21, and the slide 21 has a first end 211 and a second end 212. The first end 211 is away from the handle 1 relative to the second end 212, and a transition inclined surface 213 is provided between the first end 211 and the second end 212. The handle 1 is rotated relative to the clutch seat 2 to make the slider 151 slide back and forth between the first end 211 and the second end 212, and the lowest point of the second end 212 is lower than the highest point of the transition inclined surface 213. When the slider 151 slides to the highest point of the slide 21, the second end 212 can position the slider 151, which can effectively avoid the possibility of the slider 151 arbitrarily detaching from the second end 212, thereby helping to improve the positioning stability of the handle 1 and the clutch seat 2.

[0040] like Figure 2 and Figure 4 As shown, the clutch seat 2 in this embodiment is provided with a through hole 22 for the pull rod 3 to pass through, the through hole 22 is provided with an abutment surface 221 near the inner wall of the handle 1, and the outer peripheral side of the pull rod 3 is provided with a radially protruding step surface 33, and the reset member 4 is restricted between the abutment surface 221 and the step surface 33.

[0041] Example 2:

[0042] This embodiment shows a winch, including a driver, a drum, a planetary reduction mechanism and a rotary clutch mechanism. The planetary reduction mechanism includes a planetary gear set 51 and a clutch ring gear 52. The driver is connected to the planetary gear set 51 in transmission. The clutch ring gear 52 is mounted on the outer peripheral side of the planetary gear set 51 and is connected to the planetary gear set 51 in transmission. The rotary clutch mechanism has an engaged state and a disengaged state. When the rotary clutch mechanism is in the engaged state, the rotary clutch mechanism limits the rotation of the clutch ring gear 52 so that the output shaft 53 of the driver drives the planetary gear set 51 to rotate. The planetary gear set 51 is connected to the drum through the clutch ring gear 52, thereby driving the drum to rotate. When the rotary clutch mechanism is in the disengaged state, the rotary clutch mechanism is separated from the clutch ring gear 52, the output shaft 53 of the driver drives the planetary gear set 51 to rotate, and the clutch ring gear 52 rotates with the planetary gear set 51 to disconnect the power transmission between the driver and the drum. The rotary clutch mechanism adopts the rotary clutch mechanism of the winch described in Example 1.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A rotary clutch mechanism for a winch, comprising a handle, a pull rod, and a clutch seat, wherein one end of the pull rod passes through the clutch seat and is connected to the handle, and a reset member is sleeved on the outer circumference of the pull rod, which is confined between the pull rod and the clutch seat and causes the pull rod to have a movement tendency away from the handle, characterized in that: The pull rod is rotatably connected to the handle, and the handle can rotate around the axial direction of the pull rod. The contact part between the handle and the clutch seat is provided with a slideway and a slider. The rotation of the handle relative to the clutch seat drives the slider to move along the slideway, so that the pull rod slides back and forth along the axial direction of the clutch seat.

2. The rotary clutch mechanism of a winch according to claim 1, characterized in that: The handle is provided with a mounting groove, the pull rod includes a connecting portion extending into the mounting groove, an annular groove is provided on the outer peripheral side of the connecting portion, and the handle is provided with a limiting piece extending into the annular groove to limit the connecting portion from being separated from the mounting groove.

3. The winch rotation clutch mechanism according to claim 2, characterized in that: The width of the annular groove in the axial direction of the pull rod is greater than the width of the limiting member in the axial direction of the pull rod.

4. The winch rotation clutch mechanism according to claim 3, characterized in that: A gap is formed between the top wall of the mounting groove away from the clutch seat and the end portion of the connecting portion.

5. The winch rotation clutch mechanism according to claim 2, characterized in that: A threaded hole communicating with the mounting groove is provided on the outer surface of the handle, and the limiting member is threadedly connected to the threaded hole.

6. The winch rotation clutch mechanism according to claim 5, characterized in that: The outer surface of the handle is provided with a radially extending grip, and the length direction of the threaded hole is perpendicular to the length direction of the grip.

7. The rotary clutch mechanism of a winch according to claim 1, characterized in that: The end of the handle close to the clutch seat is provided with an accommodating groove for the clutch seat to extend into, the sliding block is arranged on the inner wall of the accommodating groove, and the slideway is arranged on the outer surface of the clutch seat.

8. The winch rotation clutch mechanism according to claim 7, characterized in that: The slide has a first end and a second end, the first end is farther away from the handle relative to the second end, a transition slope is provided between the first end and the second end, and the lowest point of the second end is lower than the highest point of the transition slope.

9. The winch rotation clutch mechanism according to claim 1, characterized in that: The clutch seat is provided with a through hole for the pull rod to pass through, the through hole is provided with an abutment surface near the inner wall of the handle, the outer peripheral side of the pull rod is provided with a radially protruding step surface, and the reset member is limited between the abutment surface and the step surface.

10. A winch, comprising a driver, a drum, a planetary reduction mechanism and a rotary clutch mechanism, wherein the planetary reduction mechanism comprises a planetary gear set and a clutch ring gear, wherein the driver is in transmission connection with the planetary gear set, the clutch ring gear is sleeved on the outer circumference of the planetary gear set and is in transmission connection with the planetary gear set, and the rotary clutch mechanism has an engaged state and a disengaged state, wherein when the rotary clutch mechanism is in the engaged state, the rotary clutch mechanism restricts the rotation of the clutch ring gear so that the driver drives the drum to rotate, and when the rotary clutch mechanism is in the disengaged state, the rotary clutch mechanism is separated from the clutch ring gear, and the clutch ring gear rotates with the planetary gear set to disconnect the power transmission between the driver and the drum, characterized in that: The rotary clutch mechanism adopts the rotary clutch mechanism of the winch according to any one of claims 1 to 9.

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