Winch with buffering clutch

Abstract

The capstan with the buffering clutch comprises a rotating power part, a roller, a brake mechanism, a primary planetary speed reduction assembly, a secondary planetary speed reduction assembly and a clutch mechanism, and the rotating power part is sequentially connected with the brake mechanism, the primary planetary speed reduction assembly, the clutch mechanism and the secondary planetary speed reduction assembly through a transmission coupler to form speed reduction transmission. The secondary planetary reduction assembly is connected with the roller; the clutch mechanism controls a clutch shaft to move in the axial direction through rotation of a clutch rotary knob assembly to achieve clutch state switching. According to the clutch, the buffer spring is added to serve as a buffer component for power transmission, impact of the clutch in the operation process can be relieved, particularly when a winch starts and stops working, the spring can absorb and disperse the impact force, and therefore other transmission components are protected against damage.

Description

Technical Field

[0001] The invention relates to the field of winches, in particular to a winch with a buffer clutch. Background Art

[0002] Winch is widely used in leisure off-road, engineering rescue, metallurgy, exploration, forestry, animal husbandry and fishery, petroleum, mineral mining and other scenarios. At present, winches at home and abroad are usually composed of several major parts such as motor, drum, brake, reducer, clutch, controller, wire rope and some corresponding accessories. The reducer connects the power between the motor and the drum, so that the wire rope wrapped around the drum can generate a large traction force to achieve the traction function. The principle of power connection or clutch achieved by the reduction assembly and the drive shaft in the existing winch is: the clutch is achieved by changing the meshing relationship between the sun gear and the planetary carrier or using a locating pin to fix the planetary gear ring, such as the content shown in the patents with application publication number CN118083832A and application publication number CN116902844A.

[0003] When switching from the disengaged state to the engaged state, the sun gear may contact the side surface of the planetary carrier tooth and fail to engage, or the locating pin may not enter the pin hole; usually, when the above situation occurs, the drum needs to be manually rotated and rotated to a certain angle to enter the engaged or positioned state. During use, the sun gear and the planetary carrier may not be properly engaged, and the locating pin may not fully enter the pin hole, resulting in an incomplete clutch state or even clutch disengagement. If this state is used for a long time, the meshing teeth or locating pins will inevitably be damaged, resulting in the winch being unable to be used normally. Most existing electric winch clutches are hard connections for gear meshing. The friction and collision caused by power transmission during the clutch process and the moment the winch starts and stops may cause damage to the clutch components. Therefore, a winch structure is needed that can buffer the torque when the clutch components are separated and combined. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the prior art and provide a winch with a buffer clutch.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: A winch with a buffer clutch comprises a rotating power part and a winch body, wherein the rotating power part is arranged outside the winch body, and is transmission-connected to the winch body; the winch body comprises a drum, a transmission coupling, a brake mechanism, a primary planetary reduction assembly, a secondary planetary reduction assembly and a clutch mechanism; the rotating output end of the rotating power part is transmission-connected to the transmission coupling; a brake mechanism is arranged on the periphery of the transmission coupling; the transmission coupling is also transmission-connected to the primary planetary reduction assembly; the primary planetary reduction assembly is transmission-connected to the secondary planetary reduction assembly through the clutch mechanism; the secondary planetary reduction assembly is also transmission-connected to the drum; a clutch buffer device for buffering the impact of the clutch mechanism when switching between clutch states is sleeved on the periphery of the clutch mechanism.

[0006] Furthermore, the clutch mechanism includes a clutch shaft provided with driving teeth; the clutch shaft is transmission-connected to the secondary planetary reduction assembly; and one end of the clutch shaft close to the primary planetary reduction assembly is provided with driving teeth for connecting to the primary planetary reduction assembly.

[0007] Furthermore, the clutch buffer device is arranged between the first-stage planetary reduction assembly and the second-stage planetary reduction assembly; the clutch buffer device includes a friction plate, a buffer plate, a driving plate, a pressure plate and a clutch clamping elastic member; wherein the buffer plate is arranged between the friction plate and the driving plate, and the friction plate is located on the side close to the first-stage planetary reduction assembly; the driving plate is kept in mesh with the driving teeth on the clutch shaft; the pressure plate is arranged between the clutch clamping elastic member and the driving plate, and the pressure plate is also movably sleeved on the outer periphery of the clutch shaft; the clutch clamping elastic member is located on the side close to the second-stage planetary reduction assembly, and the pressure plate is controlled by the clutch clamping elastic member to sequentially clamp the driving plate, the buffer plate and the friction plate; a plurality of buffer springs are inlaid on the buffer plate, which are at a set angle to the radius of the circular buffer plate, and the axis of the buffer spring is perpendicular to the axis of the clutch shaft; one side of the buffer spring is in contact with the friction plate, and the other side of the buffer spring is embedded in a correspondingly arranged spring groove on the driving plate.

[0008] Furthermore, the buffer spring is arranged along the tangent direction of the circular buffer disk; and a plurality of buffer springs are distributed at equal angles around the center of the buffer disk.

[0009] Furthermore, the buffer tray includes a first buffer frame, a second buffer frame and a buffer tray pin; wherein the first buffer frame and the second buffer frame are symmetrically arranged, and a plurality of buffer tray pins are arranged between the first buffer frame and the second buffer frame; a buffer spring is arranged between the first buffer frame and the second buffer frame; and spring holes for exposing the side surfaces of the buffer springs are respectively arranged on the first buffer frame and the second buffer frame.

[0010] Furthermore, friction disc wear-resistant layers are respectively provided on both sides of the friction disc.

[0011] Furthermore, the clutch pressing elastic member includes a plurality of spring plates, one end of which is connected to the pressure plate, and the other end of which is connected to the protruding structure on the outer periphery of the clutch shaft.

[0012] Furthermore, the clutch mechanism also includes a clutch knob assembly and an end cover; wherein the clutch knob assembly includes a clutch knob, a clutch drive rod, a positioning bead, a positioning spring and a clutch drive rod retaining spring; the clutch drive rod passes through a through hole provided on the end cover, wherein a cam is provided at one end of the clutch drive rod located inside the end cover, and a knob lug is provided at one end of the clutch drive rod located outside the end cover; the clutch drive rod is fixed to the clutch knob by the knob lug; a positioning spring is also provided inside the end cover, and one end of the positioning spring faces the clutch drive rod; the positioning spring A positioning bead is also provided at one end facing the clutch drive rod, and a positioning groove corresponding to the positioning bead is provided on the circumferential direction of the outer side of the clutch drive rod, and a deeper positioning groove is provided at the set position in the positioning groove; a dent cooperating with the clutch drive rod retaining spring is also provided on the outer periphery of the clutch drive rod, the clutch drive rod retaining spring is embedded in the dent, and the clutch drive rod retaining spring is located on the inner side of the end cover; a large baffle cooperating with the cam on the clutch drive rod is provided at the end of the clutch shaft away from the driving tooth, the cam is abutted against the large baffle, and the cam is located on the side of the large baffle close to the driving tooth.

[0013] Furthermore, the brake mechanism includes a brake block, a brake shaft, a brake spring, a brake block pin and a brake ring; the brake ring is fixedly installed in the winch body; a transmission slide groove is provided on the transmission coupling, and the two ends of the transmission slide groove are at different distances from the axis of the transmission coupling; one end of the first-stage sun gear of the first-stage planetary reduction assembly is located in the transmission coupling; the brake shaft is fixed to the first-stage sun gear through a spline connection, and is located on the inner side of the brake ring; the brake block is rotatably installed on the brake shaft through the brake block pin to achieve the action of opening outward or closing inward; a brake spring is installed between the brake block and the brake shaft; a brake block wear-resistant layer is provided on the outer side of the brake block, and a brake ring wear-resistant layer is provided on the inner side of the brake ring, and the brake block wear-resistant layer and the brake ring wear-resistant layer are in contact when the brake block is opened outward.

[0014] Furthermore, the rotating power member is connected to the transmission coupling via a spline meshing connection; the transmission coupling is also transmission-connected to the primary planetary reduction assembly; and the secondary planetary reduction assembly is connected to the drum via a spline meshing connection.

[0015] The beneficial effects of the present invention are: The clutch buffer device is provided to help reduce the impact of the clutch during operation, especially when the winch is started and stopped. The clutch buffer device can absorb and disperse the impact force, thereby protecting other transmission components from damage; By setting a clutch buffer device including a buffer disk and other structures, the rotational torque of the clutch shaft is converted into the elastic force of the buffer spring for storage, and released in combination with the friction between the buffer spring and the friction disk, so as to help the clutch shaft stop quickly and prevent the clutch shaft from continuing to rotate, causing the driving teeth at the end of the clutch shaft to collide with the first-stage planetary reduction assembly and cause damage; By setting a clutch knob assembly, the clutch knob is controlled outside the capstan to realize the clutch state switching, which is easy to operate and cooperates with the positioning slide groove and other structures set on the clutch drive rod to facilitate accurate control of the rotation angle; By setting up a brake mechanism, when the wire rope drives the drum to rotate in the opposite direction under stress, the wear-resistant layer of the brake block and the wear-resistant layer of the brake ring fit together and press tightly, so that the winch can be automatically braked and locked. The greater the load on the winch, the tighter the brake block and the brake ring fit together, ensuring stable braking performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the overall connection state of the winch of the present invention.

[0017] Figure 2 It is a cross-sectional view of the winch of the present invention in the overall neutral state.

[0018] Figure 3 Schematic diagram of the explosion of the clutch mechanism of the present invention Figure 4 It is a schematic diagram of the explosion of a part of the clutch buffer device of the present invention.

[0019] Figure 5 It is a working schematic diagram of the clutch mechanism of the present invention.

[0020] Figure 6 It is a schematic cross-sectional view of the working of the clutch mechanism of the present invention.

[0021] Figure 7 It is a schematic diagram of the explosion of the brake mechanism of the present invention.

[0022] Figure 8 It is a schematic diagram of the structure of the transmission coupling of the present invention.

[0023] Fig. 9 This is a schematic diagram of the brake mechanism of the present invention in an unbraking state.

[0024] Fig.10 It is a schematic diagram of the braking state of the brake mechanism of the present invention.

[0025] Explanation of the reference numerals: 1. Rotating power part; 2. Winch housing; 3. Drum; 4. Transmission coupling; 41. Transmission slide groove; 42. Inner lug; 5. Braking mechanism; 51. Brake block; 511. Brake block driving rod; 512. Brake block wear-resistant layer; 52. Brake shaft; 53. Brake spring; 54. Brake block pin; 55. Brake ring; 551. Brake ring wear-resistant layer; 6. Primary planetary reduction assembly; 61. Primary sun gear; 611. Outer lug; 62. Primary planetary gear; 63. Primary ring gear; 64. Primary planet carrier; 7. Secondary planetary reduction assembly; 71. Secondary sun gear; 72. Secondary planetary gear; 73. Secondary ring gear; 74. Secondary planet carrier; 8. Clutch mechanism; 81. Clutch buffer device; 811, friction plate; 812, buffer plate; 8121, buffer spring; 8122, first buffer frame; 8123, second buffer frame; 8124, buffer plate pin; 813, drive plate; 8131, drive plate inner tooth; 8132, spring groove; 814, pressure plate; 82, clutch clamping elastic member; 83, clutch shaft; 831, drive tooth; 832, small baffle; 833, external spline; 834, large baffle; 84, clutch knob assembly; 841, clutch knob; 842, clutch drive rod; 8421, cam; 8422, knob lug; 8423, positioning slide groove; 8424, positioning groove; 843, positioning bead; 844, positioning spring; 845, clutch drive rod retaining spring; 85, end cover. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention. The figures only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] Embodiment 1: A winch with a buffer clutch, such as Figure 1 , 2As shown, it includes a rotating power member 1, a drum 3, a transmission coupling 4, a brake mechanism 5, a primary planetary reduction assembly 6, a secondary planetary reduction assembly 7, and a clutch mechanism 8. The rotating power member 1 is fixedly installed on the left side of the winch housing 2. The output end of the rotating power member 1 is connected to the transmission coupling 4 through a spline meshing connection. The transmission coupling 4 connects the brake mechanism 5 and the primary planetary reduction assembly 6. The primary planetary reduction assembly 6 and the secondary planetary reduction assembly 7 are connected through a clutch mechanism 8. The secondary planetary reduction assembly 7 is connected to the drum 3 through a spline. The outer periphery of the clutch mechanism 8 is sleeved with a clutch buffer device 81 for buffering the impact of the clutch mechanism 8 when switching between clutch states. The winch also includes a winch housing 2. The rotating power member 1 is fixedly connected to the winch housing 2. The inner side of the winch housing 2 is provided with a transmission coupling 4, a brake mechanism 5, a primary planetary reduction assembly 6, a secondary planetary reduction assembly 7 and a clutch mechanism 8. The drum 3 is arranged in the exposed area in the middle of the winch housing 2. The drum 3 is also connected to the external wire rope.

[0029] like Figure 4 As shown, the clutch buffer device 81 includes a friction disc 811, a buffer disc 812, a drive disc 813, a pressure disc 814 and a clutch clamping elastic member 82; wherein the buffer disc 812 is arranged between the friction disc 811 and the drive disc 813, and the friction disc 811 is located on the side close to the primary planetary reduction assembly 6; the drive disc 813 is kept in mesh with the drive teeth on the clutch shaft, and in this example, the inner side of the drive disc is provided with a drive disc inner tooth 8131 for meshing with the drive teeth; the pressure disc 814 is arranged between the clutch clamping elastic member and the drive disc 813, and the pressure disc 814 is also movably sleeved on the outer periphery of the clutch shaft; the clutch clamping elastic member is located on the side close to the secondary planetary reduction assembly, and the clutch clamping elastic member controls the pressure disc 814 to sequentially clamp the drive disc 813, the buffer disc 812 and the friction disc 811; The buffer disk 812 is inlaid with a plurality of buffer springs 8121 which are at a set angle with the radius of the circular buffer disk 812. The axis of the buffer spring 8121 is perpendicular to the axis of the clutch shaft 83, and the buffer spring 8121 is arranged along the tangent direction of the circular buffer disk 812. In this example, the axis of the buffer spring 8121 is at a 90° angle with the radius of the buffer disk 812, that is, the buffer spring 8121 is arranged along the tangent direction of the circular buffer disk 812. One side of the buffer spring 8121 is in contact with the friction disk 811, and the other side of the buffer spring 8121 is embedded in a corresponding spring groove 8132 arranged on the driving disk 813. In this example, the number of the spring groove 8132 and the buffer spring 8121 is 4, and the four buffer springs 8121 are distributed at equal angles around the center of the buffer disk 812. The friction disk 811 is provided with a wear-resistant layer of the friction disk 811 on both sides.

[0030] The buffer tray 812 includes a first buffer frame 8122, a second buffer frame 8123 and a buffer tray pin 8124; wherein the first buffer frame 8122 and the second buffer frame 8123 are symmetrically arranged, and a plurality of buffer tray pins 8124 are arranged between the first buffer frame 8122 and the second buffer frame 8123; the buffer spring 8121 is arranged between the first buffer frame 8122 and the second buffer frame 8123; spring holes for exposing the sides of the buffer spring 8121 are also respectively arranged on the first buffer frame 8122 and the second buffer frame 8123.

[0031] like Figures 3 to 6 As shown, the left side of the clutch buffer device 81 is the primary planet carrier 64, and the right side is the clutch compression elastic member 82 and the secondary sun gear 71; the clutch compression elastic member 82 includes a plurality of springs, one end of which is connected to the pressure plate 814, and the other end is fixed to the protruding structure on the outer periphery of the clutch shaft 83, which is the secondary sun gear 71 in the secondary planetary reduction assembly 7 in this example; the friction plate 811 is pressed by the pressure plate 814 under the action of the clutch compression elastic member 82. 14 is squeezed and pressed against the side of the primary planet carrier 64; the clutch shaft 83 passes through the secondary sun gear 71 and the secondary planet carrier 74, the left end of the clutch shaft 83 is provided with a driving tooth 831, a small baffle 832 and an external spline 833, and the right end of the clutch shaft 83 is provided with a large baffle 834; the driving tooth 831 is meshed with the internal tooth 8131 of the driving disk 813; the small baffle 832 is located on the left side of the pressure plate 814; the clutch shaft 83 is meshed and connected with the secondary sun gear 71 through the external spline 833. In this example, the number of spring pieces in the clutch pressing elastic member 82 is 5.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, the clutch mechanism 8 is installed in the drum 3; the clutch mechanism 8 includes a clutch shaft 83, a clutch knob assembly 84, and an end cover 85, and the clutch knob assembly 84 can drive the clutch shaft 83 to move axially. The clutch knob assembly 84 includes a clutch knob 841, a clutch drive rod 842, a positioning bead 843, a positioning spring 844, and a clutch drive rod retaining spring 845; the clutch drive rod 842 passes through a through hole provided on the end cover 85, wherein the end of the clutch drive rod 842 located inside the end cover is provided with a cam 8421, and the end of the clutch drive rod 842 located outside the end cover 85 is provided with a knob lug 8422; the clutch drive rod 842 is fixed to the clutch knob 841 by the knob lug 8422; a positioning spring 844 is also provided inside the end cover 85, and one end of the positioning spring 844 faces the clutch drive rod 842; the end of the positioning spring 844 facing the clutch drive rod 842 A positioning bead 843 is also provided, and a positioning groove 8424 corresponding to the positioning bead 843 is circumferentially provided on the outer side of the clutch drive rod 842, and a deeper positioning groove 843 is provided at the set position in the positioning groove 8424; a dent cooperating with the clutch drive rod retaining spring 845 is also provided on the outer periphery of the clutch drive rod 842, and the clutch drive rod retaining spring 845 is embedded in the dent, and the clutch drive rod retaining spring 845 is located on the inner side of the end cover; a large baffle 834 cooperating with the cam 8421 on the clutch drive rod 842 is provided on the end of the clutch shaft 83 away from the driving tooth, and the cam 8421 is abutted against the large baffle 834, and the cam 8421 is located on the side of the large baffle 834 close to the driving tooth 831.

[0033] like Figure 1 and Figure 7 As shown, the brake mechanism 5 includes a brake block 51, a brake shaft 52, a brake spring 53, a brake block pin 54, and a brake ring 55. The brake ring 55 is fixedly installed in the winch housing 2. One end of the transmission coupling 4 is connected to the output end of the rotating power part 1 through a spline engagement; the transmission coupling 4 is provided with a transmission slide groove 41, and the two ends of the transmission slide groove 41 are at different distances from the axis of the transmission coupling 4; one end of the primary sun gear 61 is located in the transmission coupling 4; the brake shaft 52 is fixed to the primary sun gear 61 through a spline connection, and is located on the inner side of the brake ring 55.

[0034] The brake block 51 is mounted on the brake shaft 52 via a brake block pin 54. The brake block 51 can rotate around the brake block pin 54 to achieve an outward opening or inward closing action. A brake spring 53 is installed between the brake block 51 and the brake shaft 52. A brake block wear-resistant layer 512 is provided on the outer side of the brake block 51, and a brake ring wear-resistant layer 551 is provided on the inner side of the brake ring 55. When the brake block 51 is opened outward, the brake block wear-resistant layer 512 and the brake ring wear-resistant layer 551 fit together. In this example, the number of brake blocks is 5, and the number of brake springs is 5.

[0035] The brake block 51 is provided with a brake driving rod 511 , and the brake driving rod 511 passes through the transmission sliding groove 41 to form a sliding fit.

[0036] like Figure 7 , Figure 8 As shown, the transmission coupling 4 is provided with an inner lug 42 at one end away from the rotating power member 1, and the first-stage sun gear 61 is provided with an outer lug 611 at one end located in the transmission coupling 4. There is an angle between the inner lug 42 and the outer lug 611, so that the transmission coupling 4 and the first-stage sun gear 61 form a delayed transmission. In this example, the number of the inner lug 42 and the number of the outer lug 611 are both 4. Through the above technical solution, the setting of the angle enables the transmission coupling and the first-stage sun gear to form a delayed transmission. When the rotating power member 1 rotates, the transmission coupling first drives the brake block to close inward to release the brake, and then drives the first-stage sun gear to rotate through the lug, so that the winch can work normally.

[0037] The specific working process of the present invention is as follows: when the winch clutch mechanism 8 is in the engaged state, Figure 5 a. Figure 6 As shown in a, the positioning bead 843 in the clutch knob assembly 84 is located in a positioning groove 8424, the non-raised portion of the cam 8421 is in contact with the large baffle 834, and the pressure plate 814 presses the friction plate 811 and the first-stage planetary carrier 64 under the action of the clutch clamping elastic member 82. At this time, the friction layer on both sides of the friction plate 811 makes it impossible for the first-stage planetary carrier 64 and the clutch shaft 83 to rotate relative to each other.

[0038] like Fig.10 As shown, when the winch is not working, the brake block 51 opens outward under the pressure of the brake spring 53, the brake block wear layer 512 and the brake ring wear layer 551 are pressed tightly together, and the winch is in a brake locked state; Fig. 9 As shown, when the winch is started, the rotating power member 1 drives the transmission coupling 4 to rotate. Since there is a delayed transmission between the transmission coupling 4 and the primary sun gear 61, in the front stage of the delayed transmission, when the transmission coupling 4 rotates, the brake block driving rod 511 slides in the transmission slide groove 41, driving the brake block 51 to close inward, and the brake block wear-resistant layer 512 is out of contact with the brake ring wear-resistant layer 551, and the winch brake is in a released state; in the rear stage of the delayed transmission, the inner lug 42 of the transmission coupling 4 contacts the outer lug 611 of the primary sun gear 61, driving the primary sun gear 61 and the brake shaft 55 to rotate synchronously, thereby driving the primary planetary reduction assembly 6 to rotate, the primary planetary carrier 64 drives the friction disk 811 and the buffer disk 812 to rotate, the buffer disk 812 squeezes the buffer spring 8121, and drives the drive disk 813 to rotate through the buffer spring 8121, and then drives the clutch shaft 83 to rotate, thereby driving the secondary sun gear 71 to rotate, and the secondary planetary reduction assembly 7 drives the drum 3 to operate, so that the winch works normally.

[0039] like Fig.10 As shown, when the winch needs to stop working and stop rotating the power part 1 or the winch stops rotating due to an abnormal situation, the wire rope drives the drum 3 to rotate in the opposite direction under the force state, and the power is transmitted in the reverse direction, so that the first-stage sun gear 61 is reversed, driving the brake shaft 52 to reverse, and the brake block driving rod 511 slides in the transmission slide groove 41, and is subjected to a radial outward force, driving the brake block 51 to open outward. Under the combined action of the radial force and the pressure of the brake spring 53, the brake block wear-resistant layer 512 and the brake ring wear-resistant layer 551 are pressed tightly together, and the winch realizes automatic brake locking, and the greater the load on the winch, the tighter the brake block 51 and the brake ring 55 fit.

[0040] When you need to release the hinge rope manually, Figure 5 b. Figure 6 As shown in b, the clutch knob 841 is turned to drive the clutch drive rod 842 to rotate, so that the positioning bead 843 passes through the positioning slide groove 8423 to reach another positioning groove 8424. At this time, the raised part of the cam 8421 contacts the large baffle 834, driving the clutch shaft 83 to move to the right. The small baffle 832 at the left end of the clutch shaft 83 drives the pressure plate 814 to move to the right, so that the friction plate 811 is disengaged from the primary planetary carrier 64, thereby disconnecting the power connection between the primary planetary reduction assembly 6 and the secondary planetary reduction assembly 7. The capstan is in a neutral state, and the drum 3 can be manually rotated to release the hook rope.

[0041] When it is necessary to rewind the hinge rope or tow the load, the clutch knob 841 is rotated in the opposite direction to drive the clutch drive rod 842 to rotate, so that the positioning bead 843 passes through the positioning slide groove 8423 and returns to the original positioning groove 8424. The large baffle 834 contacts the non-raised part of the cam 8421, and the pressure plate 814 re-presses the friction plate 811 and the first-stage planetary carrier 64 under the action of the clutch clamping elastic member 82, so that the clutch mechanism 5 is in an engaged state.

[0042] To sum up, compared with traditional winches, the present invention does not require manual adjustment of the engagement position and can more conveniently and easily achieve clutch state switching; the addition of a spring as a buffer component for power transmission helps to reduce the impact of the clutch during operation. When the winch starts or stops working, the spring can absorb and disperse the impact force, thereby protecting other transmission components from damage.

[0043] The above description is only a specific example of the present invention and does not constitute any limitation to the present invention. It is obvious that for professionals in this field, after understanding the content and principle of the present invention, various modifications and changes in form and details may be made without departing from the principle and structure of the present invention, but these modifications and changes based on the idea of ​​the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A winch with a buffer clutch, comprising a rotating power member (1) and a winch body, wherein the rotating power member (1) is arranged outside the winch body, and the rotating power member (1) is connected to the winch body in a transmission manner; characterized in that: The winch body comprises a drum (3), a transmission coupling (4), a brake mechanism (5), a first-stage planetary reduction assembly (6), a second-stage planetary reduction assembly and a clutch mechanism (8); the rotation output end of the rotating power member (1) is transmission-connected to the transmission coupling (4); a brake mechanism (5) is arranged on the periphery of the transmission coupling (4); the transmission coupling (4) is also transmission-connected to the first-stage planetary reduction assembly (6); the first-stage planetary reduction assembly (6) is transmission-connected to the second-stage planetary reduction assembly via the clutch mechanism (8); the second-stage planetary reduction assembly is also transmission-connected to the drum (3); and a clutch buffer device (81) for buffering the impact of the clutch mechanism (8) when switching between clutch states is sleeved on the periphery of the clutch mechanism (8).

2. A winch with buffer clutch according to claim 1, characterized in that: The clutch mechanism (8) comprises a clutch shaft (83) provided with a driving tooth (831); the clutch shaft (83) is drivingly connected to the secondary planetary reduction assembly; and the end of the clutch shaft (83) close to the primary planetary reduction assembly (6) is provided with a driving tooth (831) for connecting to the primary planetary reduction assembly (6).

3. A winch with buffer clutch according to claim 2, characterized in that: The clutch buffer device (81) is arranged between the first-stage planetary reduction assembly (6) and the second-stage planetary reduction assembly; the clutch buffer device (81) comprises a friction disc (811), a buffer disc (812), a drive disc (813), a pressure disc (814) and a clutch compression elastic member; wherein the buffer disc (812) is arranged between the friction disc (811) and the drive disc (813), and the friction disc (811) is located on a side close to the first-stage planetary reduction assembly (6); the drive disc (813) is meshed with the drive teeth (831) on the clutch shaft (83); the pressure disc (814) is arranged between the clutch compression elastic member and the drive disc (813), and the pressure disc (814) is also movable. The clutch is connected to the outer periphery of the clutch shaft (83); the clutch compression elastic member is located on a side close to the secondary planetary reduction assembly, and the clutch compression elastic member controls the pressure plate (814) to sequentially compress the driving plate (813), the buffer plate (812) and the friction plate (811); the buffer plate (812) is inlaid with a plurality of buffer springs (8121) which form a set angle with the radius of the circular buffer plate (812), and the axis of the buffer spring (8121) is perpendicular to the axis of the clutch shaft (83); one side of the buffer spring (8121) is in contact with the friction plate (811), and the other side of the buffer spring (8121) is embedded in a spring groove (8132) correspondingly arranged on the driving plate (813).

4. A winch with buffer clutch according to claim 3, characterized in that: The buffer spring (8121) is arranged along the tangent direction of the circular buffer disk (812); a plurality of buffer springs (8121) are distributed at equal angles around the center of the buffer disk (812).

5. A winch with buffer clutch according to claim 3, characterized in that: The buffer disk (812) comprises a first buffer frame (8122), a second buffer frame (8123) and a buffer disk pin (8124); wherein the first buffer frame (8122) and the second buffer frame (8123) are symmetrically arranged, and a plurality of buffer disk pins (8124) are arranged between the first buffer frame (8122) and the second buffer frame (8123); a buffer spring (8121) is arranged between the first buffer frame (8122) and the second buffer frame (8123); and spring holes for exposing the side surfaces of the buffer spring (8121) are also respectively arranged on the first buffer frame (8122) and the second buffer frame (8123).

6. A winch with buffer clutch according to claim 3, characterized in that: Friction disc (811) wear-resistant layers are respectively provided on both sides of the friction disc (811).

7. A winch with buffer clutch according to claim 3, characterized in that: The clutch pressing elastic member comprises a plurality of spring sheets, one end of which is connected to the pressure plate (814), and the other end of which is connected to a protruding structure on the periphery of the clutch shaft (83).

8. A winch with buffer clutch according to claim 2, characterized in that: The clutch mechanism (8) further comprises a clutch knob assembly (84) and an end cover (85); wherein the clutch knob assembly (84) comprises a clutch knob (841), a clutch drive rod (842), a positioning bead (843), a positioning spring (844) and a clutch drive rod retaining spring (845); the clutch drive rod (842) passes through a through hole provided on the end cover (85); wherein a cam (8421) is provided at one end of the clutch drive rod (842) located inside the end cover (85); and a knob lug (8422) is provided at one end of the clutch drive rod (842) located outside the end cover (85); the clutch drive rod (842) is fixedly engaged with the clutch knob (841) via the knob lug (8422); a positioning spring (844) is further provided inside the end cover (85); one end of the positioning spring (844) faces the clutch drive rod (842); A positioning bead (843) is also provided at one end facing the clutch drive rod (842), a positioning groove (8423) corresponding to the positioning bead (843) is provided on the outer circumference of the clutch drive rod (842), and a deeper positioning groove (8424) is provided at a set position in the positioning groove (8423); a dent cooperating with a clutch drive rod retaining spring (845) is also provided on the outer circumference of the clutch drive rod (842), the clutch drive rod retaining spring (845) is embedded in the dent, and the clutch drive rod retaining spring (845) is located on the inner side of the end cover (85); a large baffle (834) cooperating with a cam (8421) on the clutch drive rod (842) is provided at one end of the clutch shaft (83) away from the driving tooth (831), the cam (8421) and the large baffle (834) are abutted against each other, and the cam (8421) is located on a side of the large baffle (834) close to the driving tooth (831).

9. A winch with buffer clutch according to claim 1, characterized in that: The brake mechanism (5) comprises a brake block (51), a brake shaft (52), a brake spring (53), a brake block pin (54) and a brake ring (55); the brake ring (55) is fixedly installed in the winch body; a transmission slide groove (41) is provided on the transmission coupling (4), and the two ends of the transmission slide groove (41) are at different distances from the axis of the transmission coupling (4); one end of the primary sun gear of the primary planetary reduction assembly (6) is located in the transmission coupling (4); the brake shaft (52) is fixed to the primary sun gear through a spline connection, The brake block (51) is rotatably mounted on the brake shaft (52) through a brake block pin (54) to achieve an outward opening or inward closing action. A brake spring (53) is installed between the brake block (51) and the brake shaft (52). A brake block wear-resistant layer (512) is provided on the outer side of the brake block (51), and a brake ring wear-resistant layer (551) is provided on the inner side of the brake ring (55). When the brake block (51) is opened outward, the brake block wear-resistant layer (512) and the brake ring wear-resistant layer (551) are in contact with each other.

10. A buffer clutch winch according to any one of claims 1 to 9, characterized in that: The rotating power member (1) is connected to the transmission coupling (4) via spline meshing; the transmission coupling (4) is also connected to the primary planetary reduction assembly (6); and the secondary planetary reduction assembly is connected to the roller (3) via spline meshing.

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