A buffer clutch capstan

Abstract

The purpose of this invention is to provide a winch with a buffer clutch, comprising a rotating power component, a drum, a braking mechanism, a first-stage planetary reduction gear assembly, a second-stage planetary reduction gear assembly, and a clutch mechanism. The rotating power component is sequentially connected to the braking mechanism, the first-stage planetary reduction gear assembly, the clutch mechanism, and the second-stage planetary reduction gear assembly via a transmission coupling to form a speed reduction transmission. The second-stage planetary reduction gear assembly is connected to the drum. The clutch mechanism controls the axial movement of the clutch shaft by rotating the clutch knob assembly to switch between clutch states. A buffer spring is added to the clutch as a buffer component for power transmission, which helps to reduce the impact of the clutch during operation, especially when the winch starts and stops. The spring can absorb and disperse these impact forces, thereby protecting other transmission components from damage.

Description

Technical Field

[0001] This invention relates to the field of winches, and more particularly to a winch with a buffer clutch. Background Technology

[0002] Winches are widely used in recreational off-roading, engineering rescue, metallurgy, exploration, forestry, animal husbandry, fisheries, and oil and mineral mining. Currently, winches, both domestically and internationally, typically consist of several main parts: a motor, drum, brake, reducer, clutch, controller, wire rope, and some corresponding accessories. The reducer connects the motor and drum, allowing the wire rope wound on the drum to generate significant traction, thus achieving the traction function. The principle of power connection or clutch operation between the reduction gear assembly and the drive shaft in existing winches is achieved by changing the meshing relationship between the sun gear and the planetary carrier, or by using locating pins to fix the planetary gear ring gear, as shown in patents with publication numbers CN118083832A and CN116902844A.

[0003] When switching from the disengaged to the engaged state, situations may arise where the sun gear fails to engage with the planetary carrier teeth due to contact with the side of the gears, or the locating pin fails to engage. Typically, in such cases, the drum needs to be manually rotated to a certain angle to achieve engagement or locating. During use, the sun gear and planetary carrier may not fully engage, and the locating pin may not fully engage, resulting in incomplete engagement or even disengagement. Prolonged use in this state will inevitably damage the engaging teeth or locating pin, rendering the winch unusable. Most existing electric winch clutches are rigid gear connections; friction and collisions generated during clutch engagement and disengagement, as well as during winch start-up and shutdown, can damage the clutch components. Therefore, a winch structure capable of buffering the torque during clutch engagement and disengagement is needed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a winch with a buffer clutch.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A winch with a buffer clutch includes a rotating power component and a winch body. The rotating power component is disposed outside the winch body and is drive-connected to the winch body. The winch body includes a drum, a transmission coupling, a braking mechanism, a first-stage planetary reduction gear assembly, a second-stage planetary reduction gear assembly, and a clutch mechanism. The rotation output end of the rotating power component is drive-connected to the transmission coupling. A braking mechanism is disposed on the outer periphery of the transmission coupling. The transmission coupling is also drive-connected to the first-stage planetary reduction gear assembly. The first-stage planetary reduction gear assembly and the second-stage planetary reduction gear assembly are drive-connected through the clutch mechanism. The second-stage planetary reduction gear assembly is also drive-connected to the drum. A clutch buffer device is sleeved on the outer periphery of the clutch mechanism to buffer the impact when the clutch mechanism switches between clutch and engagement states.

[0007] Furthermore, the clutch mechanism includes a clutch shaft with drive teeth; the clutch shaft is connected to the secondary planetary reduction assembly; and the end of the clutch shaft near the primary planetary reduction assembly is provided with drive teeth for connecting to the primary planetary reduction assembly.

[0008] Furthermore, the clutch buffer device is disposed between the first-stage planetary reduction assembly and the second-stage planetary reduction assembly; the clutch buffer device includes a friction disc, a buffer disc, a drive disc, a pressure disc, and a clutch clamping elastic element; wherein the buffer disc is disposed between the friction disc and the drive disc, with the friction disc located on the side closer to the first-stage planetary reduction assembly; the drive disc maintains engagement with the drive teeth on the clutch shaft; the pressure disc is disposed between the clutch clamping elastic element and the drive disc, and the pressure disc is also movably sleeved on the outer circumference of the clutch shaft; the clutch clamping elastic element is located on the side closer to the second-stage planetary reduction assembly, and the clutch clamping elastic element controls the pressure disc to sequentially clamp the drive disc, the buffer disc, and the friction disc; a plurality of buffer springs are embedded on the buffer disc, forming a set angle with the radius of the circular buffer disc, and the axis of the buffer springs is perpendicular to the axis of the clutch shaft; one side of the buffer spring is in contact with the friction disc, and the other side of the buffer spring is embedded in a corresponding spring groove on the drive disc.

[0009] Furthermore, the buffer springs are arranged tangentially along the circular buffer disk; a plurality of buffer springs are distributed at equal angles around the center of the buffer disk.

[0010] Furthermore, the buffer plate includes a first buffer frame, a second buffer frame, and buffer plate pins; wherein the first buffer frame and the second buffer frame are symmetrically arranged, and a plurality of buffer plate 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 of the buffer spring are also provided on the first buffer frame and the second buffer frame respectively.

[0011] Furthermore, wear-resistant layers are provided on both sides of the friction disc.

[0012] Furthermore, the clutch clamping elastic element includes several spring pieces, 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.

[0013] 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 ring; the clutch drive rod passes through a through hole provided on the end cover, wherein the end of the clutch drive rod located inside the end cover has a cam, and the end of the clutch drive rod located outside the end cover has a knob lug; the clutch drive rod is engaged and fixed with the clutch knob through the knob lug; a positioning spring is also provided inside the end cover, one end of the positioning spring facing the clutch drive rod; the positioning spring A positioning bead is provided at one end of the clutch drive lever, and a positioning groove corresponding to the positioning bead is provided on the outer circumference of the clutch drive lever. A deeper positioning groove is provided at a set position in the positioning groove. A recess is also provided on the outer circumference of the clutch drive lever to cooperate with the clutch drive lever retaining spring. The clutch drive lever retaining spring is embedded in the recess and is located on the inner side of the end cover. A large baffle is provided at the end of the clutch shaft away from the drive teeth to cooperate with the cam on the clutch drive lever. The cam abuts against the large baffle and is located on the side of the large baffle closer to the drive teeth.

[0014] Furthermore, the braking 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 inside the winch body; the transmission coupling is provided with a transmission groove, the two ends of which are at different distances from the shaft center of the transmission coupling; one end of the first-stage sun gear of the first-stage planetary reduction assembly is located inside the transmission coupling; the brake shaft is fixed to the first-stage sun gear via a spline connection and is located inside the brake ring; the brake block is rotatably installed on the brake shaft via the brake block pin, realizing 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 opens outward.

[0015] Furthermore, the rotating power component is connected to the transmission coupling via spline engagement; the transmission coupling is also connected to the first-stage planetary reduction assembly; the second-stage planetary reduction assembly is connected to the roller via spline engagement.

[0016] The beneficial effects of this invention are as follows:

[0017] By setting up a clutch buffer device, it is helpful to reduce the impact of the clutch during operation, especially when the winch starts and stops. The clutch buffer device can absorb and disperse these impact forces, thereby protecting other transmission components from damage.

[0018] By setting up a clutch buffer device including a buffer disc and other structures, the rotational torque of the clutch shaft is converted into the elastic force of the buffer spring for storage, and then released in combination with the friction between the buffer spring and the friction disc, which helps the clutch shaft stop quickly and prevents the clutch shaft from continuing to rotate, causing the drive teeth at the end of the clutch shaft to collide extensively with the first-stage planetary reduction assembly and resulting in damage.

[0019] By setting up a clutch knob assembly, the clutch knob can be controlled from outside the winch to switch between the clutch engagement and disengagement states. This makes operation convenient. Combined with the positioning groove and other structures on the clutch drive rod, it is easy to accurately control the rotation angle.

[0020] By setting up a braking 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 are pressed together, so that the winch can achieve automatic braking and locking. The greater the load on the winch, the tighter the brake block and the brake ring are pressed together, ensuring stable braking performance. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall engaged state of the winch of the present invention.

[0022] Figure 2 This is a cross-sectional view of the winch of the present invention in its neutral state.

[0023] Figure 3 This is an exploded schematic diagram of the clutch mechanism of the present invention.

[0024] Figure 4 This is a schematic diagram of the explosion of part of the clutch buffer device of the present invention.

[0025] Figure 5 This is a schematic diagram of the clutch mechanism of the present invention.

[0026] Figure 6 This is a schematic cross-sectional view of the clutch mechanism of the present invention.

[0027] Figure 7 This is an exploded schematic diagram of the braking mechanism of the present invention.

[0028] Figure 8 This is a schematic diagram of the transmission coupling structure of the present invention.

[0029] Figure 9 This is a schematic diagram of the braking mechanism of the present invention in the unbraked state.

[0030] Figure 10 This is a schematic diagram of the braking state of the braking mechanism of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1. Rotating power component; 2. Winch housing; 3. Drum; 4. Transmission coupling; 41. Transmission groove; 42. Inner lug; 5. Braking mechanism; 51. Brake block; 511. Brake block drive rod; 512. Brake block wear layer; 52. Brake shaft; 53. Brake spring; 54. Brake block pin; 55. Brake ring; 551. Brake ring wear layer; 6. First-stage planetary reduction assembly; 61. First-stage sun gear; 611. Outer lug; 62. First-stage planetary gear; 63. First-stage ring gear; 64. First-stage planetary carrier; 7. Second-stage planetary reduction assembly; 71. Second-stage sun gear; 72. Second-stage planetary gear; 73. Second-stage ring gear; 74. Second-stage planetary carrier; 8. Clutch mechanism; 81. Clutch buffer device; 811. Friction disc; 812. Buffer disc; 8121. Buffer spring; 8122. First buffer frame; 8123. Second buffer frame; 8124. Buffer disc pin; 813. Drive disc; 8131. Drive disc internal gear; 8132. Spring groove; 814. Pressure disc; 82. Clutch clamping elastic element; 83. Clutch shaft; 831. Drive gear; 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; 8424. Positioning groove; 843. Positioning bead; 844. Positioning spring; 845. Clutch drive rod retaining ring; 85. End cap. Detailed Implementation

[0032] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0034] Example 1:

[0035] A type of winch with a buffer clutch, such as Figure 1 , 2As shown, the winch includes a rotating power component 1, a drum 3, a transmission coupling 4, a braking mechanism 5, a first-stage planetary reduction gear assembly 6, a second-stage planetary reduction gear assembly 7, and a clutch mechanism 8. The rotating power component 1 is fixedly installed on the left side of the winch housing 2. The output end of the rotating power component 1 is splinedly connected to the transmission coupling 4. The transmission coupling 4 connects the braking mechanism 5 and the first-stage planetary reduction gear assembly 6. The first-stage planetary reduction gear assembly 6 and the second-stage planetary reduction gear assembly 7 are connected by the clutch mechanism 8. The second-stage planetary reduction gear assembly 7 is splinedly connected to the drum 3. A clutch buffer device 81 is sleeved on the outer periphery of the clutch mechanism 8 to buffer the impact when the clutch mechanism 8 switches between clutch and engagement states. The winch also includes a winch housing 2. The rotating power component 1 is fixedly connected to the winch housing 2. The transmission coupling 4, the braking mechanism 5, the first-stage planetary reduction gear assembly 6, the second-stage planetary reduction gear assembly 7, and the clutch mechanism 8 are arranged inside the winch housing 2. The drum 3 is located in the exposed area in the middle of the winch housing 2. The drum 3 is also connected to an external wire rope.

[0036] 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 element 82; wherein the buffer disc 812 is disposed between the friction disc 811 and the drive disc 813, and the friction disc 811 is located on the side closer to the first-stage planetary reduction assembly 6; the drive disc 813 is engaged with the drive teeth on the clutch shaft, and in this example, the inner side of the drive disc is provided with drive disc inner teeth 8131 for engaging with the drive teeth; the pressure disc 814 is disposed between the clutch clamping elastic element 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 element is located on the side closer to the second-stage planetary reduction assembly, and the clutch clamping elastic element controls the pressure disc 814 to sequentially clamp the drive disc 813, the buffer disc 812, and the friction disc 811; A plurality of buffer springs 8121 are embedded in the buffer disk 812, forming a predetermined angle with the radius of the circular buffer disk 812. The axis of the buffer springs 8121 is perpendicular to the axis of the clutch shaft 83, and the buffer springs 8121 are arranged tangentially to the circular buffer disk 812. In this example, the axis of the buffer springs 8121 forms a 90° angle with the radius of the buffer disk 812, that is, the buffer springs 8121 are arranged tangentially to the circular buffer disk 812. One side of the buffer springs 8121 contacts the friction disk 811, and the other side of the buffer springs 8121 is embedded in the corresponding spring grooves 8132 on the drive disk 813. In this example, there are four spring grooves 8132 and four buffer springs 8121, which are distributed at equal angles around the center of the buffer disk 812. Wear-resistant layers are provided on both sides of the friction disk 811.

[0037] The buffer plate 812 includes a first buffer frame 8122, a second buffer frame 8123, and buffer plate pins 8124; wherein the first buffer frame 8122 and the second buffer frame 8123 are symmetrically arranged, and a plurality of buffer plate 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 of the buffer spring 8121 are respectively provided on the first buffer frame 8122 and the second buffer frame 8123.

[0038] like Figures 3 to 6 As shown, the clutch buffer device 81 has a first-stage planetary carrier 64 on the left and a clutch clamping elastic element 82 and a second-stage sun gear 71 on the right. The clutch clamping elastic element 82 includes several spring pieces, one end of which is connected to the pressure plate 814, and the other end is fixed to a protruding structure on the outer periphery of the clutch shaft 83. In this example, it is the second-stage sun gear 71 in the second-stage planetary reduction assembly 7. The friction disc 811 is subjected to pressure from the clutch clamping elastic element 82. 14 is pressed tightly against the side of the first-stage planetary carrier 64; the clutch shaft 83 passes through the second-stage sun gear 71 and the second-stage planetary carrier 74. The left end of the clutch shaft 83 is provided with a drive 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 drive tooth 831 meshes with the internal tooth 8131 of the drive disc 813; the small baffle 832 is located on the left side of the pressure plate 814; the clutch shaft 83 is connected to the second-stage sun gear 71 through the external spline 833. In this example, the number of spring pieces in the clutch clamping elastic element 82 is 5.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, the clutch mechanism 8 is installed inside the roller 3. The clutch mechanism 8 includes a clutch shaft 83, a clutch knob assembly 84, and an end cover 85. 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 ring 845. The clutch drive rod 842 passes through a through hole provided on the end cover 85. 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 engaged and fixed with the clutch knob 841 through the knob lug 8422. The end cover 85 is also provided with a positioning spring 844, one end of which faces the clutch drive rod 842. The clutch drive lever 842 is also provided with a positioning bead 843. A positioning groove 8424 corresponding to the positioning bead 843 is provided on the outer circumference of the clutch drive lever 842. A deeper positioning groove 843 is provided at a set position in the positioning groove 8424. The outer circumference of the clutch drive lever 842 is also provided with a recess that cooperates with the clutch drive lever retaining spring 845. The clutch drive lever retaining spring 845 is embedded in the recess and is located on the inner side of the end cover. A large baffle 834 is provided on the clutch shaft 83 away from the drive teeth. It cooperates with the cam 8421 on the clutch drive lever 842. The cam 8421 abuts against the large baffle 834 and is located on the side of the large baffle 834 closer to the drive teeth 831.

[0040] like Figure 1 and Figure 7 As shown, the braking 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 inside the winch housing 2. One end of the transmission coupling 4 is connected to the output end of the rotating power component 1 via spline engagement. The transmission coupling 4 is provided with a transmission groove 41, and the two ends of the transmission groove 41 are at different distances from the axis of the transmission coupling 4. One end of the first-stage sun gear 61 is located inside the transmission coupling 4. The brake shaft 52 is fixed to the first-stage sun gear 61 via spline connection and is located inside the brake ring 55.

[0041] 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, achieving the action of opening outward or closing inward. 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 opens outward, the brake block wear-resistant layer 512 and the brake ring wear-resistant layer 551 are in contact. In this example, the number of brake blocks is 5, and the number of brake springs is 5.

[0042] The brake block 51 is provided with a brake drive rod 511, which passes through the transmission groove 41 to form a sliding fit.

[0043] like Figure 7 , Figure 8 As shown, the transmission coupling 4 has an inner lug 42 at the end away from the rotating power component 1, and an outer lug 611 at the end of the first-stage sun gear 61 located inside the transmission coupling 4. An angle exists between the inner lug 42 and the outer lug 611, enabling a delayed transmission between the transmission coupling 4 and the first-stage sun gear 61. In this example, there are four inner lugs 42 and four outer lugs 611. Through this technical solution, the angle setting enables a delayed transmission between the transmission coupling and the first-stage sun gear. When the rotating power component 1 rotates, it first drives the brake block to close inward to release the brake via the transmission coupling, and then drives the first-stage sun gear to rotate via the lugs, thus enabling the winch to operate normally.

[0044] The specific workflow of this invention is as follows: When the winch clutch mechanism 8 is in the engaged state, such as... Figure 5 a, Figure 6 As shown in Figure a, the positioning bead 843 in the clutch knob assembly 84 is located in a positioning groove 8424. The non-protruding part of the cam 8421 contacts the large baffle 834. Under the action of the clutch clamping elastic element 82, the pressure plate 814 presses the friction plate 811 and the first-stage planetary carrier 64. At this time, the friction layers on both sides of the friction plate 811 prevent the first-stage planetary carrier 64 and the clutch shaft 83 from rotating relative to each other.

[0045] like Figure 10 As shown, when the winch is not in operation, the brake block 51 opens outward under the pressure of the brake spring 53, and the wear-resistant layer 512 of the brake block adheres and presses tightly against the wear-resistant layer 551 of the brake ring, thus the winch is in a brake-locked state; Figure 9 As shown, when the winch starts, the rotating power component 1 drives the transmission coupling 4 to rotate. Due to the time delay transmission between the transmission coupling 4 and the first-stage sun gear 61, in the first stage of the time delay transmission, when the transmission coupling 4 rotates, the brake block drive rod 511 slides in the transmission groove 41, causing the brake block 51 to close inward. The wear-resistant layer 512 of the brake block disengages from the wear-resistant layer 551 of the brake ring, and the winch brake is in a released state. In the second stage of the time delay transmission, the inner lug 42 of the transmission coupling 4 contacts the outer lug 611 of the first-stage sun gear 61, causing the first-stage sun gear 61 and the brake shaft 55 to rotate synchronously, thereby driving the first-stage planetary reduction assembly 6 to rotate. The first-stage planetary carrier 64 drives the friction disc 811 and the buffer disc 812 to rotate. The buffer disc 812 compresses the buffer spring 8121, which drives the drive disc 813 to rotate through the buffer spring 8121, and then drives the clutch shaft 83 to rotate, thereby driving the second-stage sun gear 71 to rotate. The second-stage planetary reduction assembly 7 drives the drum 3 to rotate, realizing the normal operation of the winch.

[0046] like Figure 10 As shown, when the winch needs to stop working and the power component 1 needs to be stopped, or when the winch stops rotating due to an abnormality, the wire rope drives the drum 3 to rotate in the opposite direction under the force. The power is transmitted in the reverse direction, causing the first-stage sun gear 61 to rotate in the opposite direction, which in turn drives the brake shaft 52 to rotate in the opposite direction. The brake block drive rod 511 slides in the transmission groove 41 and is subjected to a radial outward force, which drives the brake block 51 to open outward. Under the combined action of the radial force and the pressure of the brake spring 53, the wear-resistant layer 512 of the brake block and the wear-resistant layer 551 of the brake ring are pressed together, and the winch achieves automatic braking and locking. The greater the load on the winch, the tighter the brake block 51 and the brake ring 55 are pressed together.

[0047] When manual release of the hinge rope is required, such as Figure 5 b、 Figure 6 As shown in b, rotating the clutch knob 841 drives the clutch drive rod 842 to rotate, causing the positioning ball 843 to pass through the positioning groove 8423 and reach another positioning groove 8424. At this time, the protruding part of the cam 8421 contacts the large baffle 834, causing 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, causing the friction plate 811 to disengage from the first-stage planetary carrier 64, thereby disconnecting the power connection between the first-stage planetary reduction assembly 6 and the second-stage planetary reduction assembly 7. The winch is in neutral, and the drum 3 can be manually rotated to release the winch rope.

[0048] When it is necessary to rewind the hinge rope or pull the load, turn the clutch knob 841 in the opposite direction to drive the clutch drive rod 842 to rotate, so that the positioning ball 843 returns to the original positioning groove 8424 through the positioning slide 8423. The large baffle 834 contacts the non-protruding part of the cam 8421. Under the action of the clutch clamping elastic element 82, the pressure plate 814 presses the friction plate 811 and the first-stage planetary carrier 64 again, so that the clutch mechanism 5 is in the engaged state.

[0049] In summary, compared with traditional winches, this invention eliminates the need for manual adjustment of the engagement position, making it easier to switch between clutch states. The addition of a spring as a buffer component for power transmission helps reduce the impact of the clutch during operation. When the winch starts or stops, the spring can absorb and disperse the impact force, thereby protecting other transmission components from damage.

[0050] The above description is merely a specific example of the present invention and does not constitute any limitation on the present invention. Obviously, those skilled in the art, after understanding the content and principles of the present invention, may make various modifications and changes in form and detail without departing from the principles and structure of the present invention; however, these modifications and changes based on the spirit 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 component (1) and a winch body, wherein the rotating power component (1) is disposed outside the winch body and is throttle-connected to the winch body; characterized in that, The winch body includes 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 component (1) is connected to the transmission coupling (4); a brake mechanism (5) is provided on the outer periphery of the transmission coupling (4); the transmission coupling (4) is also connected to the first-stage planetary reduction assembly (6); the first-stage planetary reduction assembly (6) and the second-stage planetary reduction assembly are connected to each other through the clutch mechanism (8); the second-stage planetary reduction assembly is also connected to the drum (3); a clutch buffer device (81) is sleeved on the outer periphery of the clutch mechanism (8) to buffer the impact when the clutch mechanism (8) switches between clutch and engagement states. The clutch buffer device (81) is disposed between the first-stage planetary reduction assembly (6) and the second-stage planetary reduction assembly; 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 element (82); wherein the buffer disc (812) is disposed between the friction disc (811) and the pressure disc (814), and the friction disc (811) is located on the side closer to the first-stage planetary reduction assembly (6); the drive disc (813) is engaged with the drive teeth (831) on the clutch shaft (83); the pressure disc (814) is disposed between the clutch clamping elastic element (82) and the buffer disc (812), and the pressure disc (814) is also movably sleeved on the outer periphery of the clutch shaft (83); a small baffle (832) for locking the pressure disc (814) is provided on the clutch shaft (83), and the small baffle (832) is located on the pressure disc (814) near the drive gear. One side of the disc (813); the pressure disc (814) is shaped like a basin, and the edge of the pressure disc (814) corresponds to the friction disc (811); the buffer disc (812) and the drive disc (813) are located between the pressure disc (814) and the friction disc (811); the clutch clamping elastic element (82) is located on the side close to the second-stage planetary reduction assembly, and the clutch clamping elastic element (82) presses the pressure disc (814) against the friction disc (811); the buffer disc (812) is inlaid with a number of buffer springs (8121) that form a set angle with the radius of the circular buffer disc (812), and the axis of the buffer springs (8121) is perpendicular to the axis of the clutch shaft (83); one side of the buffer springs (8121) corresponds to the first spring groove (8111) provided on the friction disc (811), and the buffer springs (8121) are also embedded in the corresponding second spring groove (8132) provided on the drive disc (813); The buffer springs (8121) are arranged tangentially along the circular buffer disk (812); a plurality of buffer springs (8121) are distributed at equal angles around the center of the buffer disk (812); The buffer plate (812) includes a first buffer frame (8122), a second buffer frame (8123), and buffer plate pins (8124); wherein the first buffer frame (8122) and the second buffer frame (8123) are symmetrically arranged, and a plurality of buffer plate 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); spring holes for exposing the side of the buffer spring (8121) are also provided on the first buffer frame (8122) and the second buffer frame (8123); and a drive plate (813) is located between the first buffer frame (8122) and the second buffer frame (8123).

2. The winch with buffer clutch according to claim 1, characterized in that, The clutch mechanism (8) includes a clutch shaft (83) with drive teeth (831); the clutch shaft (83) is connected to the secondary planetary reduction assembly; the clutch shaft (83) is provided with drive teeth (831) for connecting the primary planetary reduction assembly (6) at one end near the primary planetary reduction assembly (6).

3. A winch with a buffer clutch according to claim 1, characterized in that, The friction disc (811) has wear-resistant layers on both sides.

4. A winch with a buffer clutch according to claim 1, characterized in that, The clutch clamping elastic element (82) includes several spring pieces, one end of which is connected to the pressure plate (814), and the other end of which is connected to the secondary planetary deceleration assembly (7).

5. A winch with a buffer clutch according to claim 2, characterized in that, The clutch mechanism (8) further includes a clutch knob assembly (84) and an end cap (85); wherein 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 ring (845); the clutch drive rod (842) passes through a through hole provided on the end cap (85), wherein the end of the clutch drive rod (842) located inside the end cap (85) is provided with a cam (8421), and the end of the clutch drive rod (842) located outside the end cap (85) is provided with a knob lug (8422); the clutch drive rod (842) is engaged and fixed with the clutch knob (841) through the knob lug (8422); a positioning spring (844) is also provided inside the end cap (85), one end of the positioning spring (844) facing the clutch drive rod (842); the positioning spring (844) A positioning bead (843) is provided at one end of the clutch drive lever (842). A positioning groove (8423) corresponding to the positioning bead (843) is provided on the outer circumference of the clutch drive lever (842). A deeper positioning groove (8424) is provided at a set position in the positioning groove (8423). A recess is also provided on the outer circumference of the clutch drive lever (842) to cooperate with the clutch drive lever retaining ring (845). The clutch drive lever retaining ring (845) is embedded in the recess and is located inside the end cover (85). A large baffle (834) is provided on one end of the clutch shaft (83) away from the drive tooth (831) to cooperate with the cam (8421) on the clutch drive lever (842). The cam (8421) abuts against the large baffle (834) and is located on the side of the large baffle (834) closer to the drive tooth (831).

6. A winch with a buffer clutch according to claim 1, characterized in that, The braking 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 inside the winch body; the transmission coupling (4) is provided with a transmission groove (41), and the two ends of the transmission groove (41) are at different distances from the axis of the transmission coupling (4); one end of the first-stage sun gear of the first-stage planetary reduction assembly (6) is located inside the transmission coupling (4); the brake shaft (52) is fixed to the first-stage sun gear by a spline connection. And located inside the brake ring (55); the brake block (51) is rotatably mounted on the brake shaft (52) through the brake block pin (54) to realize the action of opening outward or closing inward; a brake spring (53) is installed between the brake block (51) and the brake shaft (52); a brake block wear layer (512) is provided on the outside of the brake block (51), and a brake ring wear layer (551) is provided on the inside of the brake ring (55). When the brake block (51) opens outward, the brake block wear layer (512) and the brake ring wear layer (551) are in contact.

7. A winch with a buffer clutch according to any one of claims 1 to 6, characterized in that, The rotating power component (1) is connected to the transmission coupling (4) by spline engagement; the transmission coupling (4) is also connected to the first-stage planetary reduction assembly (6); the second-stage planetary reduction assembly is connected to the roller (3) by spline engagement.

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