Clutch winch transmission shaft driving reset mechanism

Abstract

The utility model relates to the technical field of clutch winches, in particular to a clutch winch transmission shaft driving reset mechanism which comprises a winch support, a motor, a gearbox, a transmission shaft and a knob assembly. The left end of the transmission shaft is in circumferential transmission fit with the motor, and the transmission shaft is connected to the motor in an axial moving fit mode. An elastic reset assembly is arranged between the transmission shaft and the motor. The elastic reset assembly has the trend of enabling the transmission shaft to move rightwards in the axial direction. The right end of the transmission shaft is connected with a reset turntable; at least one reset protrusion is arranged on the right end face of the reset rotary disc in the circumferential direction. A pushing fork block used for driving the transmission shaft to move axially is arranged between the reset rotary disc and the gear box. A fork rod in transmission fit with the reset protrusion is arranged on the pushing fork block in the circumferential direction, and the rotary knob assembly is rotationally connected to the gear box. The clutch winch has the advantages that the clutch winch can be automatically reset to a closed state without being manually pulled back, the clutch winch is convenient and fast to use, and the use feeling of a user is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clutch winches, in particular to a clutch winch transmission shaft drive reset mechanism. Background Art

[0002] The existing clutch winches all achieve the clutch between the winch drum and the planetary gear by manually rotating the toggle switch back and forth. During use, the user first turns the knob to the disengaged state, so that the spline on the transmission shaft is separated from the planetary gear, thereby separating the winch drum on the spline from the planetary gear, and then the winch can be put into an idling state. This makes it convenient to pull out the rope and fix it in the specified position. The user also needs to return to the winch and turn the switch back to the engaged state, so that the spline on the transmission shaft is meshed with the planetary gear, thereby cooperating with the winch drum on the spline and the planetary gear transmission, so that the winch can output power.

[0003] During use, after the rope is fixed, it is necessary to return to the winch and then manually turn the switch to make the winch motor rotate and operate normally. This requires the user to manually adjust back and forth, which is troublesome to use and affects the user's experience. Utility Model Content

[0004] The utility model aims to solve the technical problem that the existing clutch winch needs to manually turn the switch back to the engaged state, which is cumbersome and inconvenient to operate. The utility model provides a clutch winch transmission shaft drive reset mechanism which can directly drive the switch back to the engaged state through the rotation of the motor, so that the planetary gear drives the winch drum to output power. The user does not need to go back to the winch to manually turn the switch back. The use is convenient and fast, saves time and effort, and greatly improves the user experience.

[0005] For the purpose of this utility model, the following technical solutions are adopted:

[0006] A clutch winch drive shaft drive reset mechanism, comprising a winch bracket, a motor, a gear box, a drive shaft and a knob assembly; the motor and the gear box are respectively arranged on the left and right sides of the winch bracket, and the drive shaft is rotatably connected between the motor and the gear box; the left end of the drive shaft is matched with the motor for circumferential transmission, and the drive shaft is axially movable and connected to the motor; an elastic reset assembly is arranged between the drive shaft and the motor; the elastic reset assembly has a tendency to make the drive shaft move axially to the right; the right part of the drive shaft is connected to a reset turntable; at least one reset protrusion is circumferentially arranged on the right end surface of the reset turntable; A pushing fork block for driving the transmission shaft to move axially is provided between the reset turntable and the gear box; the pushing fork block abuts against the right end of the transmission shaft through an elastic reset component, and a fork rod that cooperates with the reset protrusion is circumferentially provided on the pushing fork block, and under the transmission cooperation between the reset protrusion and the fork rod and the action of the elastic reset component, the transmission shaft pushes the pushing fork block axially to the right; the knob assembly is rotationally connected to the gear box, and the knob assembly is transmission-connected to the pushing fork block, the knob assembly is used to drive the pushing fork block to rotate, and make the pushing fork block push the transmission shaft axially to the left. The structure can manually push the transmission shaft to the left by rotating the knob assembly, and put the elastic reset assembly in a compressed state. When the winch needs to work, the transmission shaft is driven by rotating the motor, thereby driving the reset turntable to rotate, and then the reset protrusion is pressed against the fork rod on the pushing fork block, causing the fork rod to rotate, and finally the knob assembly is driven back to its original state by pushing the fork block, and the restoring force of the elastic reset assembly is used to push the transmission shaft to the right, so that the winch drum and the planetary gear set are meshed for transmission cooperation, thereby realizing automatic reset of the clutch winch, and there is no need to manually turn back the knob assembly. It is convenient and quick to use, saves time and effort, and greatly improves the user experience.

[0007] Preferably, the inner wall of the gear box is provided with a plurality of radial drive inclined surfaces along the circumferential direction; the right end of each fork rod abuts against the corresponding radial drive inclined surface; the knob assembly is used to drive the push fork block to rotate, and make the push fork block axially push the transmission shaft along the trajectory of the radial drive inclined surface. The fork rod rotates along the radial drive inclined surface, so that the axial back and forth movement can be achieved under the action of the radial drive inclined surface.

[0008] Preferably, the two ends of the radial drive bevel are respectively provided with a first positioning portion and a second positioning portion for sliding positioning of the fork rod; the radial drive bevel includes a horizontal separation section, an inclined transition section and a horizontal meshing section from shallow to deep; the first positioning portion is an axially protruding positioning boss; the first positioning portion is arranged on the separation section away from the transition section; in the disengaged state, the fork rod is located on the separation section, and the limit position is abutted against the first positioning portion; the second positioning portion is an axially protruding positioning boss; the second positioning portion is arranged on the meshing section away from the transition section; in the engaged state, the fork rod is located on the meshing section, and the limit position is abutted against the second positioning portion. The three-stage radial drive bevel enables the winch to be more stably limited and fixed at the specified position in both the disengaged and engaged states, thereby preventing the winch from being turned into place during use.

[0009] Preferably, the right end of the transmission shaft is fixedly sleeved with a one-way bearing; the reset turntable is fixedly sleeved on the one-way bearing, and the reset turntable is driven in one direction by the one-way bearing. The one-way bearing can realize one-way idling between the reset turntable and the transmission shaft, so that the transmission shaft can drive the reset turntable to rotate counterclockwise, and form one-way idling between the reset turntable and the reset turntable clockwise, so that when the transmission shaft is pushed in, the reset turntable will not be driven to rotate after the transmission shaft is driven by the motor to rotate clockwise, and the reset protrusion will not collide with the fork rod during the rotation process, and finally prevent the reset protrusion on the reset turntable from colliding with the fork rod by mistake when the winch is in the closed state, thereby further improving the integrity, safety and service life of the entire structure.

[0010] Preferably, the knob assembly includes a positioning sleeve and a rotating dial; the positioning sleeve is arranged at the right end of the transmission shaft, and the positioning sleeve is fixedly connected to the inner wall of the gear box; the positioning sleeve wraps the reset turntable inside, and a plurality of axially penetrating arc-shaped sliding holes are arranged on the positioning sleeve along the circumferential direction; each of the reset protrusions is located in the area corresponding to each arc-shaped sliding hole; the pushing fork block is arranged coaxially with the transmission shaft, and the left side wall of the pushing fork block abuts against the right end of the transmission shaft; each of the fork rods slides in each of the arc-shaped sliding holes, and the end of the fork rod is in transmission cooperation with the reset protrusion; the rotating dial is connected to the gear box, and the rotating dial is connected to the pushing fork block and drives the pushing fork block to rotate. The sliding trajectory can be determined by the arc-shaped sliding hole on the positioning sleeve, so that the fork rod can be stabilized in the arc-shaped sliding hole to slide back and forth, and the pushing fork block can be driven to rotate by rotating the dial wheel to achieve manual separation.

[0011] Preferably, a fork piece installation cavity for pushing the fork block to move axially is provided in the middle of the rotating dial wheel; a fork rod groove distributed along the axial direction is provided on the outer peripheral wall of the rotating dial wheel, and the fork rod is engaged in the fork rod groove, so that the rotating dial wheel and the pushing fork block can realize synchronous rotation, and the fork rod moves along the radial driving inclined surface to make the pushing fork block move axially in the fork piece installation cavity. The fork rod groove can ensure that the pushing fork block is driven to rotate, and the fork piece installation cavity can also ensure that the pushing fork block can realize axial movement, so as to facilitate the automatic clutch of the capstan.

[0012] Preferably, the knob assembly further comprises a rotary switch; a positioning slot is provided on the right end face of the rotary dial; a positioning block is provided on the rotary switch; the positioning block is connected to the positioning slot, and the rotary switch is fixedly connected to the rotary dial by screws, and the rotary switch is rotatably connected to the right side wall of the gear box. The rotary switch can be convenient for users to switch, which is more labor-saving and convenient to use.

[0013] Preferably, the elastic reset assembly includes a coupling sleeve, a spring and a spring positioning snap ring; the left end of the coupling sleeve is connected to the output shaft of the motor, and the right end of the coupling sleeve is provided with a hexagonal socket; the transmission shaft is axially movable and connected in the hexagonal socket; the spring positioning snap ring is fixedly clamped on the transmission shaft; the spring sleeve is provided on the transmission shaft, and the left end of the spring abuts against the right end surface of the coupling sleeve, and the right end of the spring abuts against the spring positioning snap ring. The spring positioning snap ring and the coupling sleeve facilitate the positioning of the two ends of the spring, and at the same time, it can ensure that the axial movement of the transmission shaft is achieved under the action of the spring.

[0014] Preferably, at least two sets of planetary gear sets are arranged in the gearbox; the middle section of the transmission shaft is rotatably sleeved with a spline sleeve; the spline sleeve is in transmission cooperation with the planetary gear set on the far left, and in the disengaged state, the spline sleeve is separated from the spline groove at the center of the planetary gear set on the far left; in the engaged state, the spline sleeve is meshed with the spline groove at the center of the planetary gear set on the far left; the right end of the transmission shaft is connected and passes through the planetary gear set on the far right to connect with the one-way bearing; spline positioning grooves are arranged on the left and right sides of the spline sleeve on the transmission shaft; a spline positioning snap ring is fixedly sleeved on the spline positioning groove; the left and right end faces of the spline sleeve are respectively against the end faces of the two spline positioning snap rings. The spline sleeve facilitates the clutching with the planetary gear set, and the spline positioning snap ring facilitates the better positioning of the spline sleeve, which can ensure that the axial displacement does not occur when the spline sleeve rotates.

[0015] Preferably, it also includes a winch drum; the winch drum is rotatably connected to the capstan bracket and is sleeved outside the transmission shaft, and a spline matching through hole is provided at the right end of the winch drum; the spline sleeve is axially movable and connected in the spline matching through hole, and the spline sleeve drives the winch drum to rotate synchronously.

[0016] To sum up, the advantage of the utility model is that the structure can manually push the transmission shaft to the left by rotating the knob assembly, and put the elastic reset assembly in a compressed state. When the winch needs to work, the transmission shaft is driven by rotating the motor, thereby driving the reset turntable to rotate through the one-way bearing, and then the reset protrusion is pressed against the fork rod on the pushing fork block, so that the fork rod rotates along the radial driving inclined surface, and finally the knob assembly is driven back to its original state by pushing the fork block, and the restoring force of the elastic reset assembly is used to push the transmission shaft to the right, so that the winch drum and the planetary gear are meshed for transmission cooperation, and finally the clutch winch is automatically reset and engaged, and there is no need to manually turn back the knob assembly. It is convenient and quick to use, saves time and effort, and greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of the clutch winch transmission shaft driving reset mechanism.

[0018] Figure 2 It is a structural schematic diagram of the transmission shaft in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the elastic connection component and the spline sleeve in the utility model.

[0020] Figure 4 It is a cross-sectional view of the knob assembly in the utility model.

[0021] Figure 5 It is a structural schematic diagram of the knob assembly in the utility model.

[0022] Figure 6 It is a schematic diagram of the structure inside the knob assembly of the utility model.

[0023] Figure 7 It is a schematic diagram of the structure inside the end cover of the utility model.

[0024] Figure 8 It is an exploded view of the knob assembly of the present invention from the left side perspective.

[0025] Fig. 9 It is an exploded view of the knob assembly of the utility model from the right side perspective.

[0026] Among them: 1. Winch bracket; 2. Motor; 3. Planetary gear housing; 4. Planetary gear set; 41. Spline groove; 5. Transmission shaft; 50. Elastic reset assembly; 501. Coupling sleeve; 502. Spring; 503. Spring positioning snap ring; 504. Hexagonal socket; 51. Spline sleeve; 511. Spline positioning slot; 512. Spline positioning snap ring; 52. One-way bearing; 53. Reset turntable; 531. Connecting screw; 54. Reset protrusion; 6. End cover; 61. Radial drive ramp; 611. Separation section; 612, transition section; 613, engagement section; 614, first positioning portion; 615, second positioning portion; 7, knob assembly; 71, positioning sleeve; 711, arc-shaped sliding hole; 72, pushing fork block; 721, fork rod; 7211, radial portion; 7212, axial portion; 73, rotating dial; 730, fork piece installation cavity; 731, fork rod groove; 732, positioning card slot; 74, rotary switch; 741, positioning card block; 75, screw; 8, winch drum; 81, spline matching through hole. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 9As shown, a clutch winch drive shaft drive reset mechanism includes a winch bracket 1, a motor 2, a gear box, a planetary gear set 4, a transmission shaft 5, a knob assembly 7 and a winch drum 8. The gear box can be integrally formed or divided into a planetary gear housing 3 and an end cover 6. In this embodiment, a detachably connected planetary gear housing 3 and an end cover 6 are used to facilitate installation and maintenance. The winch bracket 1 is formed by connecting the support plates on the left and right sides and a plurality of horizontal connecting rods in the middle. The motor 2 and the planetary gear housing 3 are respectively arranged on the left and right sides of the winch bracket 1, and the transmission shaft 5 is rotatably connected between the motor 2 and the planetary gear housing 3; the end cover 6 is fixedly connected to the right part of the planetary gear housing 3 by the end cover connecting screws, and the opening of the planetary gear housing 3 is sealed and closed. The knob assembly 7 is rotatably connected to the right side of the end cover 6; the left end of the transmission shaft 5 cooperates with the motor 2 for circumferential transmission, and the transmission shaft 5 is axially movable and connected to the motor 2; an elastic reset assembly 50 is arranged between the transmission shaft 5 and the motor 2; the elastic reset assembly 50 has a tendency to move the transmission shaft 5 axially to the right, and when the elastic reset assembly 50 is compressed, it is in a separated state, and when the elastic reset assembly 50 is in a normal state, it is in a meshed state. The right end of the transmission shaft 5 passes through the planetary gear set 4 in the planetary gear housing 3 and is connected to a one-way bearing 52, and a reset turntable 53 is fixedly sleeved on the one-way bearing 52. Through the internal rotating structure of the one-way bearing 52 itself, the reset drive member 53 can achieve idling when it rotates clockwise, and the reset drive member 53 can rotate synchronously with the planetary right side plate 40 when it rotates counterclockwise. A plurality of reset protrusions 54 are arranged on the upper circumference of the right end surface of the reset turntable 53; the one-way bearing 52 can realize the one-way idle rotation between the reset turntable 53 and the transmission shaft 5, so that the transmission shaft 5 can drive the reset turntable to rotate when it is counterclockwise, and can form a one-way idle rotation with the reset turntable 53 when it is clockwise, so that when the transmission shaft 5 is pressed and pushed in, the reset turntable 53 will not be driven to rotate after the transmission shaft 5 is driven by the motor 2 to rotate clockwise, and the reset protrusion 54 will not collide with the push fork block 72 during the rotation process, and finally prevent the reset protrusion 54 on the reset turntable 53 from colliding with the push fork block 72 when the motor 2 is rotated clockwise when the winch is in the closed state, causing wear or damage, and further improving the integrity, safety and service life of the entire structure. The reset turntable 53 is provided with an axially penetrating screw connection hole; the screw connection hole is connected with a connection screw 531 to form the reset protrusion 54. The connection screw 531 facilitates disassembly and maintenance.A pushing fork block 72 for driving the transmission shaft 5 to move axially is provided between the reset turntable 53 and the end cover 6; the pushing fork block 72 abuts against the right end of the transmission shaft 5 through the elastic reset assembly 50, and a plurality of fork rods 721 for transmission cooperation with the reset protrusion 54 are circumferentially provided on the pushing fork block 72, and a plurality of radial driving inclined surfaces 61 are circumferentially provided on the left inner wall of the end cover 6; the right end face of each fork rod 721 abuts against the corresponding radial driving inclined surface 61; the two ends of the radial driving inclined surface 61 are respectively provided with a first positioning portion 614 and a second positioning portion 615 for preventing the fork rod 721 from sliding and making the fork rod 721 slide and position; The transmission shaft 5 drives the reset turntable 53 to rotate, so that the reset protrusion 54 drives the fork rod 721 to rotate along the radial driving inclined surface 61, and under the action of the elastic reset component 50, the transmission shaft 5 and the pushing fork block 72 are synchronously moved axially to the right; thereby, the spline sleeve 51 on the transmission shaft 5 is meshed with the planetary gear set 4, and then the winch drum 8 mounted on the spline sleeve 51 is transmitted and matched with the planetary gear set 4, and finally power output is realized; the knob assembly 7 is transmission-connected with the pushing fork block 72, and the knob assembly 7 is used to drive the pushing fork block 72 to rotate, and make the pushing fork block 72 axially push the transmission shaft 5 along the trajectory of the radial driving inclined surface 61. This structure can manually push the transmission shaft 5 to the left by rotating the knob assembly 7, and put the elastic reset assembly 50 in a compressed state. When the winch needs to work, the transmission shaft 5 is driven by rotating the motor 2, thereby driving the reset turntable 53 to rotate through the one-way bearing 52, and then the reset protrusion 54 is pressed against the fork rod 721 on the pushing fork block 72, so that the fork rod 721 rotates along the radial driving inclined surface 61, and finally the knob assembly 7 is driven back to its original state by pushing the fork block 72, and the restoring force of the elastic reset assembly 50 is used to push the transmission shaft 5 to the right, so that the winch drum 8 is meshed with the leftmost planetary gear set 4, thereby realizing automatic reset of the clutch winch, and there is no need to manually turn back the knob assembly 7. It is convenient and quick to use, saves time and effort, and greatly improves the user experience.

[0029] The connecting screw 531 can also be axially movable and arranged on the axial through hole. Both ends of the connecting screw 531 axially protrude from the reset dial 53. An elastic connecting plate is also connected between the left side of the reset dial 53 and the left part of the connecting screw 531, so that the connecting screw 531 can axially move on the axial through hole. The elastic connecting plate can ensure the connectivity and firmness of the connecting screw 531. At the same time, when the fork rod 721 and the connecting screw 531 are against each other, the connecting screw 531 has a certain axial movement space to the left, which reduces the occurrence of the connecting screw 531 and the fork rod 721 aligning and hard collision to break the connecting screw 531 or the fork rod 721 during transmission, thereby improving the transmission effect, transmission safety and service life.

[0030] like Figure 7 and Figure 8As shown, the radial driving inclined surface 61 includes a horizontal separation section 611 from shallow to deep, an inclined transition section 612 and a horizontal meshing section 613; the first positioning portion 614 is an axially protruding positioning boss; the first positioning portion 614 is arranged on the separation section 611 away from the transition section 612; in the separated state, the fork rod 721 is located on the separation section 611, and the limit is against the first positioning portion 614; the second positioning portion 615 is an axially protruding positioning boss; the second positioning portion 615 is arranged on the meshing section 613 away from the transition section 612; in the engaged state, the fork rod 721 is located on the meshing section 613, and the limit is against the second positioning portion 615. The three-stage radial driving inclined surface 61 can make the fork rod 721 more stably fixed at the specified position in the two states of the winch, so as to prevent the situation of not being turned into place during use.

[0031] like Figures 4 to 9 As shown, the knob assembly 7 includes a positioning sleeve 71 and a rotating dial 73; the positioning sleeve 71 is sleeved on the right end of the transmission shaft 5, and the positioning sleeve 71 is fixedly connected to the inner wall of the end cover 6, and relative fixation is achieved by matching three equally spaced axially distributed snap-ons on the positioning sleeve 71 with three equally spaced circumferentially distributed blocks on the inner wall of the end cover 6. The positioning sleeve 71 wraps the reset turntable 53, and a plurality of arc-shaped sliding holes 711 are circumferentially arranged on the positioning sleeve 71, each reset protrusion 54 is located in the area corresponding to each arc-shaped sliding hole 711; the pushing fork block 72 is coaxially arranged with the transmission shaft 5, and the center of the left wall of the pushing fork block 72 abuts against the right end face of the transmission shaft 5; each fork rod 721 is slidably fitted in each arc-shaped sliding hole 711, and the end of the fork rod 721 is transmission-matched with the reset protrusion 54; the rotating dial 73 is connected to the end cover 6, and the rotating dial 73 is connected to the pushing fork block 72, and drives the pushing fork block 72 to rotate. The sliding trajectory can be determined by the arc-shaped sliding hole 711 on the positioning sleeve 71, so that the fork rod 721 can be stably slid back and forth in the arc-shaped sliding hole 711, and the pushing fork block 72 can be driven to rotate by rotating the dial 73 to achieve manual separation. A fork piece installation cavity 730 for pushing the fork block 72 to move axially is provided in the middle of the rotating dial wheel 73; a fork rod groove 731 distributed along the axial direction is provided on the outer peripheral wall of the rotating dial wheel 73, and the fork rod 721 is engaged in the fork rod groove 731, so that the rotating dial wheel 73 and the pushing fork block 72 can realize synchronous rotation, and the fork rod 721 moves along the radial driving inclined surface 61 to make the pushing fork block 72 move axially in the fork piece installation cavity 730. The fork rod groove 731 can ensure that the pushing fork block 72 is driven to rotate, and the fork piece installation cavity 730 can also ensure that the pushing fork block 72 can realize axial movement, so as to facilitate the automatic clutch of the capstan.

[0032] like Figures 4 to 9As shown, three arc-shaped sliding holes 711 are arranged at equal intervals along the circumference on the positioning sleeve 71; three reset protrusions 54 are arranged at equal intervals along the circumference on the right end surface of the reset rotary disk 53; three L-shaped fork rods 721 are arranged at equal intervals along the circumference on the pushing fork block 72; three radial driving inclined surfaces 61 matching with the fork rod 721 are arranged at equal intervals along the circumference on the end cover 6; three fork rod grooves 731 are arranged at equal intervals along the circumference on the rotating dial 73; the radial portion 7211 of the fork rod 721 is plugged and matched with the fork rod groove 731, and the axial portion 7212 of the fork rod 721 is axially inserted into the arc-shaped sliding hole 711, the first positioning portion 614 is located between two adjacent radial driving inclined surfaces 61, and the second positioning portion 615 is located between two adjacent radial driving inclined surfaces 61. By arranging three in the circumference, the stability and coaxiality of rotation can be guaranteed, and the rotation matching degree and transmission accuracy can be ensured.

[0033] like Figures 4 to 9 As shown, the knob assembly 7 also includes a rotary switch 74; a positioning slot 732 is provided on the right end surface of the rotary dial 73; a positioning block 741 is provided on the rotary switch 74; the positioning block 741 is clamped to the positioning slot 732, and the rotary switch 74 is fixedly connected to the rotary dial 73 by a screw 75, and the rotary switch 74 is rotatably connected to the right side wall of the end cover 6. The rotary switch 74 can be convenient for the user to switch, which is more labor-saving and convenient to use.

[0034] like Figure 2 and Figure 3 As shown, the elastic reset assembly 50 includes a coupling sleeve 501, a spring 502 and a spring positioning snap ring 503; the left end of the coupling sleeve 501 is connected to the output shaft of the motor 2, and the right end of the coupling sleeve 501 is provided with a hexagonal socket 504; the transmission shaft 5 is axially movable and connected in the hexagonal socket 504; the spring positioning snap ring 503 is fixedly clamped on the transmission shaft 5; the spring 502 is sleeved on the transmission shaft 5, and the left end of the spring 502 abuts on the right end surface of the coupling sleeve 501, and the right end of the spring 502 abuts on the spring positioning snap ring 503. The spring positioning snap ring 503 and the coupling sleeve 501 are convenient for limiting the two ends of the spring 502, and at the same time, it can ensure that the axial movement of the transmission shaft 5 is achieved under the action of the spring 502.

[0035] Three sets of planetary gear sets 4 are arranged in the planetary gear housing 3; a spline sleeve 51 is rotatably sleeved on the middle section of the transmission shaft 5; the spline sleeve 51 is in transmission cooperation with the leftmost planetary gear set 4, and in the disengaged state, the spline sleeve 51 is separated from the spline groove 41 in the center of the leftmost planetary gear set 4; in the engaged state, the spline sleeve 51 is meshed with the spline groove 41 in the center of the leftmost planetary gear set 4; the right end of the transmission shaft 5 is connected to and passes through the rightmost planetary gear set 4 and is connected to the one-way bearing 52; spline positioning grooves 511 are arranged on the left and right sides of the spline sleeve 51 on the transmission shaft 5; a spline positioning snap ring 512 is fixedly sleeved on the spline positioning groove 511; the left and right end faces of the spline sleeve 51 are respectively against the end faces of the two spline positioning snap rings 512. The spline sleeve 51 facilitates the clutch with the planetary gear set 4 , and the spline positioning snap ring 512 facilitates the better positioning of the spline sleeve 51 , thereby ensuring that the spline sleeve 51 rotates without axial displacement.

[0036] like Figures 1 to 3 As shown, it also includes a winch drum 8; the winch drum 8 is rotatably connected to the capstan bracket 1 and is sleeved on the outside of the transmission shaft 5, and a spline matching through hole 81 is provided at the right end of the winch drum 8; the spline sleeve 51 is axially movable and connected in the spline matching through hole 81, and the spline sleeve 51 drives the winch drum 8 to rotate synchronously, and the spline sleeve 51 always drives the winch drum 8 to rotate. In the engaged state, the left side of the spline sleeve 51 is located in the spline matching through hole 81, and the right side of the spline sleeve 51 is engaged with the spline groove 41 at the center of the planetary gear set 4. In the disengaged state, the right side of the entire spline sleeve 51 is away from the spline groove 41 and moves toward the spline matching through hole 81, so that the entire spline sleeve 51 is located in the spline matching through hole 81.

[0037] When in use, first turn the rotary switch 74 on the knob assembly 7 clockwise, so that the rotary switch 74 drives the rotary dial wheel 73 to rotate, and the rotary dial wheel 73 drives the fork rod 721 on the pushing fork block 72 to slide from the meshing section 613 to the separation section 611 along the radial driving inclined surface 61 under the limit of the arc-shaped sliding hole 711. During the sliding process, due to the height difference, the pushing fork block 72 is pushed leftward, so that the pushing fork block 72 is transmitted to the transmission shaft 5, thereby pushing the transmission shaft 5 to the left, so that the spline sleeve 51 on the transmission shaft 5 is separated from the spline groove 41 in the center of the planetary gear set 4, and then the winch drum 8 sleeved on the spline sleeve 51 is separated from the center of the leftmost planetary gear set 4, and the planetary gear set 4 cannot transmit to the winch drum 8, and finally the winch drum 8 is realized to idle, so that the user can pull out the rope on the winch and hang it on the tree or pole at the original location;

[0038] After the rope is fixed, the motor 2 is directly driven by remote control to rotate counterclockwise, and the driving motor 2 drives the transmission shaft 5 to rotate counterclockwise, so that the transmission shaft 5 drives the reset turntable 53 on the one-way bearing 52 to rotate counterclockwise, so that the reset protrusion 54 on the reset turntable 53 presses against the fork rod 721 on the pushing fork block 72, thereby driving the fork rod 721 to rotate counterclockwise, and under the limitation of the arc-shaped sliding hole 711, it slides from the separation section 611 to the meshing section 613 along the radial driving inclined surface 61. During the sliding process, due to the height difference and the action of the spring 502 in the elastic reset component 50, the pushing fork block 72 and the transmission shaft 5 move right synchronously, so that the spline sleeve 51 on the transmission shaft 5 meshes with the spline groove 41 in the center of the planetary gear set 4, so that the planetary gear set 4 on the far left drives the winch drum 8 on the spline sleeve 51 to rotate, and finally realizes the power output of the winch drum 8 to enable the normal operation of the winch.

[0039] To sum up, the advantage of the utility model is that the structure can manually push the transmission shaft 5 to the left by rotating the knob assembly 7, and put the elastic reset assembly 50 in a compressed state. When the winch needs to work, the transmission shaft 5 is driven by rotating the motor 2, thereby driving the reset turntable 53 to rotate through the one-way bearing 52, and then the reset protrusion 54 is pressed against the fork rod 721 on the pushing fork block 72, so that the fork rod 721 rotates along the radial driving inclined surface 61, and finally the knob assembly 7 is driven back to the original state by pushing the fork block 72, and the restoring force of the elastic reset assembly 50 is used to push the transmission shaft 5 to the right, so that the planetary gear set 4 drives the winch drum 8 to perform transmission cooperation, thereby realizing automatic reset of the clutch winch, and there is no need to manually dial back the knob assembly 7. At the same time, the knob assembly 7 can also be manually dialed back, which will not affect the use of the entire winch. The overall use is convenient and fast, saving time and effort, and greatly improving the user experience.

[0040] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A clutch winch transmission shaft drive reset mechanism, characterized in that: The invention comprises a winch bracket (1), a motor (2), a gear box, a transmission shaft (5) and a knob assembly (7); the motor (2) and the gear box are respectively arranged on the left and right sides of the winch bracket (1); the transmission shaft (5) is rotatably connected between the motor (2) and the gear box; the left end of the transmission shaft (5) is circumferentially transmission-matched with the motor (2), and the transmission shaft (5) is axially movable and matched to the motor (2); an elastic reset assembly (50) is arranged between the transmission shaft (5) and the motor (2); the elastic reset assembly (50) has a tendency to cause the transmission shaft (5) to move axially to the right; a reset rotary disc (53) is connected to the right part of the transmission shaft (5); at least one reset protrusion (54) is circumferentially arranged on the right end surface of the reset rotary disc (53); the reset rotary disc (53) and the gear box are connected to each other. A pushing fork block (72) for driving the transmission shaft (5) to move axially is arranged between the two gears; the pushing fork block (72) abuts against the right end of the transmission shaft (5) through an elastic reset assembly (50); a fork rod (721) is circumferentially arranged on the pushing fork block (72) for transmission cooperation with the reset protrusion (54); and under the transmission cooperation between the reset protrusion (54) and the fork rod (721) and the action of the elastic reset assembly (50), the transmission shaft (5) pushes the pushing fork block (72) axially to the right and resets; the knob assembly (7) is rotationally connected to the gear box, and the knob assembly (7) is transmission-connected to the pushing fork block (72); the knob assembly (7) is used to drive the pushing fork block (72) to rotate, and causes the pushing fork block (72) to push the transmission shaft (5) axially to the left.

2. The clutch winch transmission shaft drive reset mechanism according to claim 1, characterized in that: The inner wall of the gear box is provided with a plurality of radial drive inclined surfaces (61) along the circumferential direction; the right end of each fork rod (721) abuts against the corresponding radial drive inclined surface (61); the knob assembly (7) is used to drive the push fork block (72) to rotate, and to enable the push fork block (72) to axially push the transmission shaft (5) along the trajectory of the radial drive inclined surface (61).

3. The clutch winch transmission shaft drive reset mechanism according to claim 2, characterized in that: The two ends of the radial drive inclined surface (61) are respectively provided with a first positioning portion (614) and a second positioning portion (615) for sliding positioning of the fork rod (721); the radial drive inclined surface (61) comprises a horizontal separation section (611) from shallow to deep, an inclined transition section (612) and a horizontal meshing section (613); the first positioning portion (614) is an axially protruding positioning boss; the first positioning portion (614) is arranged on the separation section (611) away from the fork rod (721). on one side of the transition section (612); in a detached state, the fork rod (721) is located on the separation section (611) and is limited at the first positioning portion (614); the second positioning portion (615) is an axially protruding positioning boss; the second positioning portion (615) is arranged on the meshing section (613) away from the transition section (612); in a engaged state, the fork rod (721) is located on the meshing section (613) and is limited at the second positioning portion (615).

4. The clutch winch transmission shaft drive reset mechanism according to claim 1, characterized in that: The right end of the transmission shaft (5) is fixedly sleeved with a one-way bearing (52); the reset rotary disc (53) is fixedly sleeved on the one-way bearing (52), and the reset rotary disc (53) realizes one-way transmission through the one-way bearing (52).

5. The clutch winch transmission shaft drive reset mechanism according to claim 1, characterized in that: The knob assembly (7) comprises a positioning sleeve (71) and a rotating dial (73); the positioning sleeve (71) is sleeved on the right end of the transmission shaft (5), and the positioning sleeve (71) is fixedly connected to the inner wall of the gear box; the positioning sleeve (71) wraps the reset turntable (53) inside, and the positioning sleeve (71) is provided with a plurality of axially penetrating circular arc sliding holes (711) along the circumferential direction; each of the reset protrusions (54) is located in a region corresponding to each circular arc sliding hole (711); the push knob (73) is provided with a plurality of axially penetrating circular arc sliding holes (711); each of the reset protrusions (54) is located in a region corresponding to each circular arc sliding hole (711); The movable fork block (72) is coaxially arranged with the transmission shaft (5), and the left side wall of the pushing fork block (72) abuts against the right end of the transmission shaft (5); each of the fork rods (721) is slidably fitted in each of the arc-shaped sliding holes (711), and the end of the fork rod (721) is transmission-matched with the reset protrusion (54); the rotating dial (73) is rotationally connected to the outer side wall of the gear box, and the rotating dial (73) is connected to the pushing fork block (72) and drives the pushing fork block (72) to rotate.

6. The clutch winch transmission shaft drive reset mechanism according to claim 5, characterized in that: A fork piece installation cavity (730) for pushing the fork block (72) to move axially is provided in the middle of the rotating dial wheel (73); a fork rod groove (731) distributed along the axial direction is provided on the outer peripheral wall of the rotating dial wheel (73); the fork rod (721) is snap-fitted into the fork rod groove (731), so that the rotating dial wheel (73) and the pushing fork block (72) can rotate synchronously, and the fork rod (721) can move along the radial driving inclined surface (61) to push the fork block (72) to move axially in the fork piece installation cavity (730).

7. The clutch winch transmission shaft drive reset mechanism according to claim 5, characterized in that: The knob assembly (7) further comprises a rotary switch (74); a positioning slot (732) is provided on the right end surface of the rotary dial (73); a positioning block (741) is provided on the rotary switch (74); the positioning block (741) is snapped into the positioning slot (732), and the rotary switch (74) is fixedly connected to the rotary dial (73) by means of a screw (75), and the rotary switch (74) is rotatably connected to the right side wall of the gear box.

8. The clutch winch transmission shaft drive reset mechanism according to claim 1, characterized in that: The elastic reset assembly (50) comprises a coupling sleeve (501), a spring (502) and a spring positioning snap ring (503); the left end of the coupling sleeve (501) is connected to the output shaft of the motor (2), and the right end of the coupling sleeve (501) is provided with a hexagonal socket (504); the transmission shaft (5) is axially movably connected in the hexagonal socket (504); the spring positioning snap ring (503) is fixedly clamped on the transmission shaft (5); the spring (502) is sleeved on the transmission shaft (5), and the left end of the spring (502) abuts against the right end surface of the coupling sleeve (501), and the right end of the spring (502) abuts against the spring positioning snap ring (503).

9. The clutch winch transmission shaft drive reset mechanism according to claim 4, characterized in that: At least two sets of planetary gear sets (4) are arranged in the gearbox; a spline sleeve (51) is rotatably sleeved on the middle section of the transmission shaft (5); the spline sleeve (51) is in transmission cooperation with the planetary gear set (4) on the leftmost side; in a disengaged state, the spline sleeve (51) is separated from the spline groove (41) at the center of the planetary gear set (4) on the leftmost side; in a engaged state, the spline sleeve (51) is meshed with the spline groove (41) at the center of the planetary gear set (4) on the leftmost side; the right end of the transmission shaft (5) is connected to and passes through the planetary gear set (4) on the rightmost side to be connected to the one-way bearing (52); spline positioning grooves (511) are arranged on the left and right sides of the spline sleeve (51) on the transmission shaft (5); a spline positioning snap ring (512) is fixedly sleeved on the spline positioning groove (511); and the left and right end surfaces of the spline sleeve (51) are respectively abutted against the end surfaces of the two spline positioning snap rings (512).

10. The clutch winch transmission shaft drive reset mechanism according to claim 9, characterized in that: It also includes a hoisting drum (8); the hoisting drum (8) is rotatably connected to the capstan bracket (1) and sleeved outside the transmission shaft (5), and a spline matching through hole (81) is provided at the right end of the hoisting drum (8); the spline sleeve (51) is axially movable and connected in the spline matching through hole (81), so that the spline sleeve (51) drives the hoisting drum (8) to rotate synchronously.

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