Reliable Clutch Brake Winch

Abstract

The present invention relates to a reliable clutch-brake winch, which comprises a winch housing. A motor is installed on one side of the winch housing, a drum is installed in the middle of the winch housing, a speed reduction mechanism and a clutch mechanism are installed on the other side of the winch housing. The motor drives the clutch mechanism to rotate through a brake mechanism located inside the drum. The clutch mechanism drives the drum to rotate through the speed reduction mechanism. The clutch mechanism can connect or disconnect the power transmission between the brake mechanism and the speed reduction mechanism. The present invention uses a clutch pressing spring to press and release an external tooth disc and an internal tooth disc, which is more convenient for realizing the switching of the clutch state. The brake is provided by the common action of the friction of the brake pads and the locking of the locking claws, which provides buffer protection for the brake components and improves the brake reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of winches, and particularly to a reliable clutch brake winch. Background Art

[0002] Winches are widely used. They can help vehicles perform self-rescue and rescue operations in harsh environments such as snow, swamps, deserts, beaches, and muddy mountain roads. In existing winches, the principle of power connection or clutch realized by the deceleration component and the intermediate transmission shaft in the winch is as follows: The clutch is achieved by changing the meshing relationship between the sun gear and the planet carrier or using a positioning pin to fix the planet gear ring. For example, the authorized announcement number is CN208532082U, which discloses a winch clutch. Combining its specification and drawings, the solution is that the fixing pin I slides from the acute angle at the high position of the triangular groove along the hypotenuse of the triangular groove to the acute angle at the low position of the triangular groove, and the fixing pin II slides horizontally in the pin hole II of the clutch wrench, so that the clutch wrench can rotate smoothly. At the same time, the fixing pin II is inserted into the vertical groove of the clutch camshaft to prevent the clutch camshaft from rotating, forcing the clutch camshaft to slide upward in the vertical direction along the fixing pin II, so that the fixed head at the lower end of the clutch camshaft disengages from the output gear ring fixing hole, enabling the output gear ring to rotate freely, so that the winch drum can rotate in the reverse direction and easily pull and release the rope;

[0003] When switching from the disengaged state to the engaged state, there will be a situation where the side surfaces of the sun gear and the planet carrier come into contact and cannot enter the meshing state, or the positioning pin does not enter the pin hole. In this case, it is necessary to manually rotate the drum by a certain angle to enter the meshing or positioning state. During use, the sun gear and the planet carrier may not be meshed properly, and the positioning 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 positioning pins will inevitably be damaged, leading to the winch being unable to be used normally.

[0004] Furthermore, the braking devices of winches usually include mechanical hand brakes, hydraulic brakes, electromagnetic brakes, mechanical automatic brakes, etc. When the existing winch braking device brakes the winch during driving, the brake disc directly abuts against the surface of the winch for braking. During the braking process, there is no certain buffering between the brake disc and the surface of the winch, resulting in a large frictional force between the brake disc and the surface of the winch, which is easy to generate sparks. At the same time, after the brake disc brakes the winch, the winch itself has a certain inertia and will still rotate within a certain range. When rotating due to inertia, the rope on the winch will continue to unwind for a certain length, and it is difficult for the rope to stop unwinding in time, reducing the effect of braking protection for the winch. Summary of the Invention

[0005] The present invention mainly aims at the problems existing in the clutch state switching and the operation of the braking device in the above-mentioned winch, and invents a reliable clutch-braking winch. By improving the clutch, the clutch output shaft is improved to be a hollow shaft, and the clutch rod body passes through the inside of the clutch output shaft. The clutch rod baffle contacts the flat part of the cam. Under the action of the clutch compression spring, the clutch end cover presses against the external tooth disc, thereby pressing the external tooth disc and the internal tooth disc together, making the clutch mechanism in the engaged state. Similarly, by contacting the clutch rod baffle with the convex part of the cam, the clutch rod body moves towards the motor direction, the clutch end cover releases the external tooth disc, and the clutch mechanism is in the disengaged state; positioning grooves are provided at both ends of the positioning chute, and the positioning beads can slide on the positioning chute. By using the positioning beads that can be stuck inside the positioning grooves at different positions, the rotation of the cam is realized; when the clutch mechanism of the winch is in the engaged state and the reduction mechanism continues to be subjected to an external force, the friction of the brake pads against the brake seat body and the friction of the locking claw against the brake ring jointly achieve the braking effect.

[0006] The object of the present invention is achieved by the following technical solutions: a reliable clutch-braking winch, including a winch housing, a motor is installed on one side of the winch housing, a drum is installed in the middle of the winch housing, a reduction mechanism and a clutch mechanism are installed on the other side of the winch housing, the motor drives the clutch mechanism to rotate through a braking mechanism located in the drum, the clutch mechanism drives the drum to rotate through the reduction mechanism, and the clutch mechanism can connect or disconnect the power transmission between the braking mechanism and the reduction mechanism.

[0007] Preferably, a clutch knob assembly is provided on one side of the winch housing close to the clutch mechanism. When the clutch mechanism is in the engaged state, it can connect the power transmission between the braking mechanism and the reduction mechanism. When the clutch mechanism is in the disengaged state, it can disconnect the power transmission between the braking mechanism and the reduction mechanism. The clutch knob assembly can switch the working state of the clutch mechanism.

[0008] Preferably, the clutch mechanism includes a clutch input shaft, a sliding clutch assembly, a clutch output shaft, a clutch lever body, and a clutch knob assembly. The clutch knob assembly can drive the clutch lever body to move along the axial direction of the clutch output shaft. The sliding clutch assembly consists of a clutch end cover, an external gear disk, an internal gear disk, a clutch compression spring, and a compression bolt. The external gear disk and the internal gear disk are arranged at intervals. The external gear disk and the internal gear disk are sleeved on the input end of the clutch output shaft. The internal gear disk forms a sliding fit with the internal tooth groove at the input end of the clutch output shaft. Friction layers are provided on both end faces of the external gear disk and the internal gear disk. The clutch end cover is installed on the input end of the clutch output shaft through the clutch compression spring and the compression bolt. The output end of the clutch input shaft is sleeved on the external gear disk. The external gear disk forms a sliding fit with the chute. The clutch output shaft is a hollow shaft. The clutch lever body passes through the clutch output shaft and is fixedly connected to the clutch end cover. The clutch input shaft is fixed in the drum through a clutch input shaft positioning bearing, a clutch input shaft small snap ring, and a clutch input shaft snap ring.

[0009] Preferably, the clutch knob assembly includes a clutch knob, a clutch drive rod, a positioning bead, a positioning spring, and a clutch drive rod snap ring. A cam is provided at one end of the clutch drive rod. A lug is provided at the other end of the clutch drive rod. The clutch drive rod is fixedly connected to the clutch knob through the lug. The clutch drive rod is fixed on the right end cover through the clutch knob and the clutch drive rod snap ring. A positioning chute is provided on the clutch drive rod. Positioning grooves are provided at the left and right ends of the positioning chute. The positioning grooves have a limiting effect on the positioning bead. The positioning chute and the positioning grooves are in the same plane. The positioning grooves are distributed at 90 degrees along the axial direction of the clutch drive rod. The positioning bead and the positioning spring are installed inside the right end cover. The positioning bead and the positioning spring are in the same plane as the positioning chute and the positioning grooves. The positioning bead abuts against the positioning chute or the positioning grooves on the clutch drive rod under the thrust of the positioning spring. The cam contacts the clutch lever baffle on the clutch lever body. The change in the position of the cam can drive the clutch lever body to move along the axial direction of the clutch output shaft.

[0010] Preferably, the side wall of the cam has a raised portion and a flat portion. When the raised portion contacts the clutch lever baffle, the clutch lever body moves towards the motor. When the flat portion contacts the clutch lever baffle, the clutch lever body moves away from the motor. The change in the position of the clutch lever body will change the position of the clutch end cover.

[0011] Preferably, the brake mechanism includes a brake seat body, a locking bolt, a brake pad, a brake disc body, a brake clamping spring, a brake shaft, a brake sleeve, and a brake ring. The output shaft surface of the motor is provided with an external spline, and one end of the brake shaft is also provided with external splines that cooperate with each other. The motor and the brake shaft are splined through a coupling. The brake clamping spring, brake disc body, brake pad, brake seat body and brake sleeve are sequentially mounted on the brake shaft. A friction layer is provided on the side of the brake disc body close to the brake pad, friction layers are provided on both sides of the brake pad, and a friction layer is provided on the side of the brake seat body close to the brake pad. The brake seat body is fixed to the drum by a locking bolt installed in the locking hole. The input end of the clutch input shaft is a hexagonal shaft. A hexagonal hole is provided at one end of the brake sleeve close to the clutch input shaft, and the center hole of the brake ring is also the same hexagonal hole. The brake sleeve and the brake ring sleeve are arranged on the clutch input shaft, and a brake disc pin and a brake sleeve pin are provided on the surface of the brake shaft. A brake disc slide groove is provided on the brake disc body, and a brake sleeve slide groove is provided on the brake sleeve. The brake disc pin, brake sleeve pin, brake disc slide groove and brake sleeve slide groove are all symmetrical along the center of the axis. The brake disc pin and the brake disc slide groove are slidingly matched, and the brake sleeve pin and the brake sleeve slide groove are slidingly matched. One end of the brake clamping spring abuts against the limit plate of the brake shaft, and the other end of the brake clamping spring abuts against the brake disc body. The brake clamping spring presses the brake disc body and the brake pad against the surface of the brake seat body.

[0012] Preferably, a brake seat boss is provided on the surface of the brake seat body, and a plurality of locking grooves are evenly distributed on the brake seat boss in a circumferential direction, and a locking pin is provided in each locking groove. Spring lugs are provided on both sides of each locking groove on the end face of the brake seat boss, and a locking claw is provided on the locking pin. The locking claw can rotate in the locking groove, one end of the locking claw is connected to one end of the locking claw spring, and one end of the spring lug is connected to the other end of the locking claw spring. Under the tension of the locking claw spring, the locking claw moves toward the inside of the groove close to the brake ring.

[0013] Preferably, the reduction mechanism is a two-stage planetary gear structure, including a first-stage planetary reduction mechanism consisting of a first-stage sun gear, a first-stage ring gear, a first-stage planetary gear, and a first-stage planetary carrier, and a second-stage planetary reduction mechanism consisting of a second-stage sun gear, a second-stage ring gear, a second-stage planetary gear, a second-stage planetary carrier, and a reducer output wheel. The first-stage sun gear is located at the end of the clutch output shaft away from the motor, the first-stage planetary carrier and the second-stage sun gear are meshed with internal and external teeth, the second-stage sun gear and the second-stage planetary carrier are sleeved on the clutch output shaft and rotate relative to the clutch output shaft, the first-stage planetary carrier is transmission connected to the second-stage sun gear, the second-stage planetary carrier is fixedly connected to the reducer output wheel, the reducer output wheel is transmission connected to the internal teeth of the drum, and the second-stage ring gear is fixedly connected to the capstan housing.

[0014] Preferably, when the clutch lever body contacts the convex part on the cam, the clutch end cover moves towards the motor direction and releases the external gear disc, and when the clutch lever body contacts the flat part on the cam, the clutch end cover presses the external gear disc and the internal gear disc under the action of the clutch compression spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By improving the clutch, the clutch output shaft is improved to a hollow shaft, and the clutch lever body passes through the inside of the clutch output shaft. When the clutch lever baffle contacts the flat part of the cam, under the action of the clutch compression spring, the clutch end cover presses against the external gear disc, thereby pressing the external gear disc and the internal gear disc, making the clutch mechanism in the engaged state. Similarly, by using the clutch lever baffle to contact the convex part of the cam, the clutch lever body moves towards the motor direction, and the clutch end cover releases the external gear disc, making the clutch mechanism in the disengaged state. This structure makes full use of the slidability of the clutch lever body and the elasticity of the clutch compression spring, realizing the clutch state switching without manually rotating the drum, which is more convenient and easier to achieve; 2. The positioning grooves are arranged at both ends of the positioning chute, and the positioning beads can slide on the positioning chute. By using the positioning beads to be stuck inside the positioning grooves at different positions, the rotation of the cam is realized, which plays a role of limiting and guiding, making the user operation more convenient; 3. When the clutch mechanism of the winch is in the engaged state and the reduction mechanism continues to receive an external force, the friction between the brake pads and the brake seat body and the friction between the locking claw and the brake ring jointly achieve the braking effect, making the clutch input shaft and the drum in the locked state. In this double-brake structure, the compression spring makes there be a certain buffer distance between the brake disc body and the brake pads, and the friction force is a gradually increasing process, not easy to generate sparks. Moreover, the brake pads and the locking claw improve the braking efficiency and the reliability of the winch brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall winch of the present invention;

[0017] Figure 2 It is a sectional view of the overall winch of the present invention;

[0018] Figure 3 It is an exploded schematic diagram of the reduction mechanism of the present invention;

[0019] Figure 4 It is a sectional view of the clutch mechanism of the present invention;

[0020] Figure 5 It is an exploded schematic diagram of the clutch mechanism of the present invention;

[0021] Figure 6 It is a sectional view of the brake mechanism of the present invention;

[0022] Figure 7 It is an exploded schematic diagram of the brake mechanism of the present invention;

[0023] Figure 8 Schematic diagram of the working of the clutch mechanism of the present invention;

[0024] Figure 9 Schematic diagram of the working of the clutch mechanism of the present invention;

[0025] Figure 10 Schematic sectional view of the working of the clutch mechanism of the present invention;

[0026] Figure 11 Schematic sectional view of the working of the clutch mechanism of the present invention;

[0027] Figure 12 Schematic diagram of the working of the brake mechanism of the present invention;

[0028] Figure 13 Schematic diagram of the working of the brake mechanism of the present invention;

[0029] Figure 14 Schematic sectional view of the working of the brake mechanism of the present invention;

[0030] Figure 15 Schematic sectional view of the working of the brake mechanism of the present invention;

[0031] Figure 16 Schematic diagram of the structure of the brake shaft area of the present invention;

[0032] Figure 17 Schematic diagram of the structure of the brake seat body area of the present invention;

[0033] Figure 18 Schematic diagram of the structure of the brake sleeve of the present invention;

[0034] Figure 19 Schematic diagram of the structure of the brake disc of the present invention;

[0035] Figure 20 Partial enlarged view of the present invention;

[0036] Figure 21 Partial enlarged view of the present invention.

[0037] Markings in the figure: 1, winch housing; 11, right end cover; 2, motor; 3, drum; 31, internal teeth of the drum; 4, reduction mechanism; 41, first-stage gear ring; 42, first-stage planetary gear; 43, first-stage planetary carrier; 44, second-stage sun gear; 45, second-stage gear ring; 46, second-stage planetary gear; 47, second-stage planetary carrier; 48, output gear of the reducer; 5, clutch mechanism; 51, clutch input shaft; 511, hexagonal shaft; 512, chute; 52, sliding clutch assembly; 521, clutch end cover; 522, external tooth disc; 523, internal tooth disc; 524, clutch compression spring; 525, compression bolt; 53, clutch output shaft; 531, internal tooth groove; 532, first-stage sun gear; 54, clutch lever body; 541, clutch lever baffle; 55, clutch knob assembly; 551, clutch knob; 552, clutch drive rod; 5521, cam; 5522, lug; 5523, positioning chute; 5524, positioning groove; 553, positioning bead; 554, positioning spring; 555, snap ring for the clutch drive rod; 56, positioning bearing for the clutch input shaft; 57, small snap ring for the clutch input shaft; 58, snap ring for the clutch input shaft; 6, brake mechanism; 61, brake seat body; 611, locking bolt; 612, locking hole; 613, brake seat boss; 614, locking groove; 615, locking pin; 616, spring lug; 62, brake pad; 63, brake disc body; 631, brake disc chute; 64, brake compression spring; 65, brake shaft; 651, external spline; 652, limit plate; 653, brake disc pin; 654, brake sleeve pin; 66, brake sleeve; 661, brake sleeve chute; 662, hexagonal hole; 67, locking claw; 68, locking claw spring; 69, brake ring; 7, coupling. Detailed implementation mode

[0038] The present invention will be further described below in conjunction with the embodiments shown in the drawings:

[0039] As Figure 1 and Figure 2 shown, a sliding clutch winch includes a winch housing 1, a motor 2 is installed on one side of the winch housing 1, a drum 3 is installed in the middle of the winch housing 1, a reduction mechanism 4 and a clutch mechanism 5 are installed on the other side of the winch housing 1 opposite to the motor 2, the motor 2 drives the clutch mechanism 5 to rotate through a brake mechanism 6 located inside the drum 3, the clutch mechanism 5 drives the drum 3 to rotate through the reduction mechanism 4, and the power transmission between the brake mechanism 6 and the reduction mechanism 4 can be connected or disconnected by controlling the clutch mechanism 5.

[0040] In this embodiment, as Figure 3As shown, the reduction mechanism 4 is a two-stage planetary gear structure, including a first-stage planetary reduction mechanism consisting of a first-stage sun gear 532, a first-stage ring gear 41, a first-stage planetary gear 42, and a first-stage planetary carrier 43, and a second-stage planetary reduction mechanism consisting of a second-stage sun gear 44, a second-stage ring gear 45, a second-stage planetary gear 46, a second-stage planetary carrier 47, and a reducer output wheel 48; the first-stage sun gear 532 is located at the end of the clutch output shaft 53 away from the motor 2, the first-stage planetary carrier 43 and the second-stage sun gear 44 are meshed and connected by internal and external teeth, the second-stage sun gear 44 and the second-stage planetary carrier 47 are sleeved on the clutch output shaft 53 and can rotate relative to the clutch output shaft 53, the first-stage planetary carrier 43 is transmission-connected to the second-stage sun gear 44, the second-stage planetary carrier 47 is fixedly connected to the reducer output wheel 48, the reducer output wheel 48 is transmission-connected to the inner teeth 31 of the drum, the second-stage ring gear 45 is fixedly connected to the capstan housing 1, wherein the number of the first-stage planetary gears 42 is 3, the number of the second-stage planetary gears 46 is 4, and the deceleration motion between the gears in the reduction mechanism 4 is used to achieve the effect of reducing the rotation speed.

[0041] In this embodiment, if Figure 4 and Figure 5 As shown, the clutch mechanism 5 is installed on the right side of the drum 3, specifically, it includes a clutch input shaft 51, a sliding clutch assembly 52, a clutch output shaft 53, a clutch rod body 54, and a clutch knob assembly 55. The clutch knob assembly 55 can drive the clutch rod body 54 to move along the axial direction of the clutch output shaft 53. The sliding clutch assembly 52 is composed of a clutch end cover 521, an outer tooth plate 522, an inner tooth plate 523, a clutch clamping spring 524, and a clamping bolt 525; the outer tooth plate 522 and the inner tooth plate 523 are arranged at intervals and sleeved on the input end of the clutch output shaft 53, and the inner tooth plate 523 forms a sliding fit with the inner tooth groove 531 at the input end of the clutch output shaft 53; both sides of the outer tooth plate 522 and the inner tooth plate 523 The end faces are all provided with friction layers; the clutch end cover 521 is installed on the input end of the clutch output shaft 53 through the clutch clamping spring 524 and the clamping bolt 525. Under the thrust of the clutch clamping spring 524, the clutch end cover 521 is pushed toward the clutch output shaft 53, thereby clamping the outer toothed disc 522 and the inner toothed disc 523; the output end of the clutch input shaft 51 is sleeved on the outer toothed disc 522, and the slide groove 512 forms a sliding fit with the outer toothed disc 522; the clutch output shaft 53 is a hollow shaft, and the clutch rod body 54 passes through the clutch output shaft 53 and is fixedly connected with the clutch end cover 521; the clutch input shaft 51 is fixed in the drum 3 through the clutch input shaft positioning bearing 56, the clutch input shaft small retaining spring 57 and the clutch input shaft retaining spring 58.

[0042] In this embodiment, the clutch knob assembly 55 includes a clutch knob 551, a clutch drive rod 552, a positioning bead 553, a positioning spring 554, and a clutch drive rod circlip 555; one end of the clutch drive rod 552 is provided with a cam 5521, and the other end is provided with a lug 5522. The clutch drive rod 552 is fixedly connected to the clutch knob 551 through the lug 5522; a right end cover 11 is provided on the right side of the winch housing 1, and the clutch drive rod 552 is fixed to the right end cover 11 through the clutch knob 551 and the clutch drive rod circlip 555; a positioning chute 5523 is provided on the clutch drive rod 552, and positioning grooves 5524 are provided at the left and right ends of the positioning chute 5523. The positioning grooves 5524 have a certain limiting effect on the positioning bead 553. The positioning chute 5523 and the positioning grooves 5524 are located in the same plane, and the positioning grooves 5524 are distributed at 90 degrees along the axial direction of the clutch drive rod 552. The positioning bead 553 and the positioning spring 554 are installed inside the right end cover 11, and the positioning bead 553 and the positioning spring 554 are located in the same plane as the positioning chute 5523 and the positioning grooves 5524. The positioning bead 553 abuts against the positioning chute 5523 or the positioning grooves 5524 on the clutch drive rod 552 under the thrust of the positioning spring 554. Among them, the cam 5521 contacts the clutch rod baffle 541 on the clutch rod body 54. The side wall of the cam 5521 has a convex part and a flat part. When the convex part contacts the clutch rod baffle 541, the clutch rod body 54 moves towards the motor 2, and when the flat part contacts the clutch rod baffle 541, the clutch rod body 54 moves away from the motor 2. The position change of the clutch rod body 54 will change the position change of the clutch end cover 521.

[0043] In this embodiment, as Figure 6 , Figure 7 , Figure 17 , Figure 18 and Figure 19As shown in the figure, the braking mechanism 6 is composed of a brake seat body 61, a locking bolt 611, a brake pad 62, a brake disc body 63, a brake compression spring 64, a brake shaft 65, a brake sleeve 66, a locking claw 67, a locking claw spring 68, and a brake ring 69; the output shaft of the motor 2 is provided with an external spline, one end of the brake shaft 65 is provided with the same external spline 651, the central hole of the coupling 7 is provided with a corresponding internal spline, and the motor 2 and the brake shaft 65 are connected by splines through the coupling 7; the brake compression spring 64, the brake disc body 63, the brake pad 62, the brake seat body 61, and the brake sleeve 66 are sequentially sleeved on the brake shaft 65; it should be noted that friction layers are provided on one side of the brake disc body 63 close to the brake pad 62, both sides of the brake pad 62, and one side of the brake seat body 61 close to the brake pad 62, and the brake seat body 61 is fixed to the drum 3 by the locking bolt 611 installed in the locking hole 612; a brake seat boss 613 is provided on the surface of the brake seat body 61, and a number of locking grooves 614 are evenly distributed along the circumferential direction on the brake seat boss 613. A locking pin 615 is provided in the locking groove 614, and spring lugs 616 are provided on both sides of each locking groove 614 at the end face of the brake seat boss 613; the locking claw 67 is installed on the locking pin 615 and can rotate in the locking groove 614; one end of the locking claw spring 68 is connected to the locking claw 67, and the other end is connected to the spring lug 616. The locking claw 67 moves towards the center of the circle under the pulling force of the locking claw spring 68; the input end of the clutch input shaft 51 is a hexagonal shaft 511, one end of the brake sleeve 66 close to the clutch input shaft 51 is provided with a hexagonal hole 662, and the central hole of the brake ring 69 is also the same hexagonal hole. The brake sleeve 66 and the brake ring 69 are sleeved on the clutch input shaft 51; brake disc pins 653 and brake sleeve pins 654 are provided on the surface of the brake shaft 65, a brake disc chute 631 is provided on the brake disc body 63, and a brake sleeve chute 661 is provided on the brake sleeve 66. It should be noted that the brake disc pins 653, the brake sleeve pins 654, the brake disc chute 631, and the brake sleeve chute 661 are all symmetrically centered on the axis. The brake disc pins 653 and the brake disc chute 631 are in sliding fit, and the brake sleeve pins 654 and the brake sleeve chute 661 are in sliding fit; one end of the brake compression spring 64 abuts against the limiting plate 652 of the brake shaft 65, and the other end abuts against the brake disc body 63. The brake compression spring 64 can press the brake disc body 63 and the brake pad 62 towards the brake seat body 61.

[0044] Working principle and usage method of the present invention:

[0045] When the winch clutch mechanism is in the combined state, as shown in Figure 8 , Figure 10 and Figure 20As shown, in the clutch knob assembly 55, the positioning bead 553 is located in the left positioning groove 5524, and the flat part of the cam 5521 contacts the clutch lever baffle 541. Under the restriction of the cam 5521, the entire clutch lever body 54 and the clutch end cover 521 are located on the right side, so that the clutch end cover 521 presses the outer tooth disc 522 and the inner tooth disc 523 under the action of the clutch compression spring 524. At this time, the friction layers on both sides of the outer tooth disc 522 and the inner tooth disc 523 prevent them from rotating relative to each other, and thus the clutch is in the engaged state.

[0046] When the winch starts to work, as Figure 13 and Figure 15 shown, the motor 2 drives the brake shaft 65 to rotate through the coupling 7. During the rotation of the brake shaft 65, the brake disc pin 653 and the brake sleeve pin 654 can slide in the brake disc chute 631 and the brake sleeve chute 661 respectively. Since the force applied by the locking claw spring 68 to the brake sleeve 66 in the axial direction through the locking claw 67 is smaller than the force applied by the brake compression spring 64 to the brake disc body 63, the brake sleeve pin 654 slides in the brake sleeve chute 661, driving the brake sleeve 66 to move away from the brake seat body 61. The brake sleeve 66 pushes the locking claw 67 to move outwards, and the locking claw 67 leaves the groove of the brake ring 69. Until the brake sleeve pin 654 slides to the end in the brake sleeve chute 661, the brake disc pin 653 slides in the brake disc chute 631, driving the brake disc body 63 to move away from the brake seat body 61 and no longer pressing the brake pad 62. At this time, the entire brake mechanism 6 is in the released state; the brake shaft 65 drives the brake disc body 63 and the brake sleeve 66 to rotate. The hexagonal hole 662 of the brake sleeve 66 drives the clutch input shaft 51 through the hexagonal shaft 511. The clutch input shaft 51 drives the outer tooth disc 522 to rotate through the chute 512. At this time, the outer tooth disc 522 drives the inner tooth disc 523 to rotate through friction. The inner tooth disc 523 drives the clutch output shaft 53 to rotate through meshing with the inner tooth groove 531. The first-stage sun gear 532 on the clutch output shaft 53 transmits power to the first-stage planet gear 42, so that the entire reduction mechanism 4 starts to work, and the second-stage tooth ring 45 in the reduction mechanism is fixedly connected to the winch housing 1 to drive the drum 3 to rotate.

[0047] When it is necessary to stop the winch from working or the winch stops rotating due to an abnormal situation, as Figure 12 and Figure 14As shown in the figure, first stop the motor 2. Then, the power input to the brake shaft 65 disappears. Under the pressure of the brake compression spring 64, the brake disc body 63 moves towards the brake seat body 61, thereby pressing the brake pads 62, causing the entire brake shaft 65 to rotate in the reverse direction. Under the frictional force between the brake pads 62 and the brake seat body 61, a buffering effect is achieved. Subsequently, when the winch rope is under load, it drives the drum 3 to rotate in the reverse direction. The power is transmitted in reverse, causing the clutch mechanism 5 to reverse. At this time, the clutch input shaft 51 drives the brake sleeve 66 and the brake ring 69 to rotate in the reverse direction. The brake sleeve 66 moves towards the brake seat body 61. During the movement of the brake sleeve 66, the pushing force on the locking claw 67 becomes smaller and smaller. Under the action of the locking claw spring 68, the locking claw 67 enters the groove of the brake ring 69. At this time, one end of the locking claw 67 is connected to the brake seat body 61, and the other end is stuck inside the brake ring 69. Therefore, the brake ring 69 cannot rotate, and the clutch input shaft 51 cannot rotate either. Since the clutch mechanism of the winch is in the engaged state at this time, when the reduction mechanism 4 continues to receive an external force, the braking effect is achieved under the combined action of the friction between the brake pads 62 and the brake seat body 61 and the friction between the locking claw 67 and the brake ring 69, causing the clutch input shaft 51 and the drum 3 to be in a locked state. In this double-brake structure, the compression spring 64 allows a certain buffer distance between the brake disc body 63 and the brake pads 62. The frictional force is a gradually increasing process and is not likely to generate sparks. Moreover, the brake pads 62 and the locking claw 67 improve the braking efficiency and the reliability of the winch brake.

[0048] When manual release of the winch rope is required, as Figure 9 、 Figure 11 and Figure 21 shown in the figure, rotate the clutch knob 551, driving the clutch drive rod 552 to rotate, causing the positioning bead 553 to reach the positioning groove 5524 on the right side through the positioning chute 5523. At this time, the protruding part of the cam 5521 contacts the clutch rod baffle 541, driving the clutch rod body 54 to move towards the motor 2. The clutch rod body 54 drives the clutch end cover 521 to release the external gear disc 522, causing the frictional force due to pressure between the external gear disc 522 and the internal gear disc 523 to disappear. The external gear disc 522 and the internal gear disc 523 can rotate relative to each other. At this time, the clutch is in the disengaged state, which means that the power connection between the reduction mechanism 4 and the brake mechanism 6 is disconnected, and the reduction mechanism 4 can rotate freely. Therefore, the drum 3 can be rotated manually to release the winch rope.

[0049] When it is necessary to rewind the hinge rope or tow the load, rotate the clutch knob 551 in the reverse direction, driving the clutch drive rod 552 to rotate, so that the positioning bead 553 returns to the original positioning groove 5524 through the positioning chute 5523. Under the action of the clutch compression spring 524, the clutch end cover 521 and the clutch rod body 54 move away from the motor 2. The clutch rod baffle 541 contacts the flat part of the cam 5521, and the clutch end cover 521 presses against the external sprocket 522, thereby pressing the external sprocket 522 and the internal sprocket 523 tightly, so that the clutch mechanism 5 is in the engaged state again. Compared with the traditional winch, only by rotating the relative position of the cam 5521 to change the left and right positions of the clutch rod body 54 can the engagement or disengagement of the clutch be achieved, and the operation of the clutch can be more easily realized.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A reliable clutch brake winch, comprising a winch housing (1), characterized in that: A motor (2) is installed on one side of the winch housing (1), a drum (3) is installed in the middle of the winch housing (1), and a speed reduction mechanism (4) and a clutch mechanism (5) are installed on the other side of the winch housing (1); the motor (2) drives the clutch mechanism (5) to rotate via a brake mechanism (6) located in the drum (3); the clutch mechanism (5) drives the drum (3) to rotate via the speed reduction mechanism (4); and the clutch mechanism (5) can connect or disconnect the brake mechanism (6) and the speed reduction mechanism (4). Power transmission, the clutch mechanism (5) comprises a clutch input shaft (51), a sliding clutch assembly (52), a clutch output shaft (53), a clutch rod body (54), and a clutch knob assembly (55), wherein the clutch knob assembly (55) can drive the clutch rod body (54) to move along the axial direction of the clutch output shaft (53), and the sliding clutch assembly (52) comprises a clutch end cover (521), an outer tooth plate (522), an inner tooth plate (523), a clutch clamping spring (524), and a clamping bolt (525). The outer tooth plate (522) and the inner tooth plate (523) are arranged at intervals, the outer tooth plate (522) and the inner tooth plate (523) are sleeved on the input end of the clutch output shaft (53), the inner tooth plate (523) and the inner tooth groove (531) at the input end of the clutch output shaft (53) form a sliding fit, the end surfaces of both sides of the outer tooth plate (522) and the inner tooth plate (523) are provided with a friction layer, and the clutch end cover (521) is installed on the clutch output shaft (53) through a clutch compression spring (524) and a compression bolt (525). The clutch input shaft (51) is provided with an input end thereof, the output end of the clutch input shaft (51) is sleeved on an outer toothed disc (522), the outer toothed disc (522) and the slide groove (512) form a sliding fit, the clutch output shaft (53) is a hollow shaft, the clutch rod body (54) passes through the clutch output shaft (53) and is fixedly connected to the clutch end cover (521), and the clutch input shaft (51) is fixed in the drum (3) by means of a clutch input shaft positioning bearing (56), a clutch input shaft small retaining spring (57) and a clutch input shaft retaining spring (58).

2. The reliable clutch brake winch according to claim 1, characterized in that: A clutch knob assembly (55) is provided on one side of the winch housing (1) close to the clutch mechanism (5); when the clutch mechanism (5) is in an engaged state, the power transmission between the brake mechanism (6) and the reduction mechanism (4) can be connected; when the clutch mechanism (5) is in a disengaged state, the power transmission between the brake mechanism (6) and the reduction mechanism (4) can be disconnected; and the clutch knob assembly (55) can switch the working state of the clutch mechanism (5).

3. The reliable clutch brake winch according to claim 2, characterized in that: The clutch knob assembly (55) comprises a clutch knob (551), a clutch drive rod (552), a positioning bead (553), a positioning spring (554) and a clutch drive rod retaining spring (555); a cam (5521) is provided at one end of the clutch drive rod (552); a lug (5522) is provided at the other end of the clutch drive rod (552); the clutch drive rod (552) is fixedly connected to the clutch knob (551) via the lug (5522); the clutch drive rod (552) is fixed to the right end cover (11) via the clutch knob (551) and the clutch drive rod retaining spring (555); a positioning slide groove (5523) is provided on the clutch drive rod (552); positioning grooves (5524) are provided at the left and right ends of the positioning slide groove (5523); the positioning grooves (5524) have a limiting effect on the positioning bead (553). The positioning groove (5523) and the positioning groove (5524) are located in the same plane, and the positioning groove (5524) is distributed at ninety degrees along the axial direction of the clutch drive rod (552). The positioning bead (553) and the positioning spring (554) are installed inside the right end cover (11). The positioning bead (553) and the positioning spring (554) are located in the same plane as the positioning groove (5523) and the positioning groove (5524). Under the thrust of the positioning spring (554), the positioning bead (553) presses against the positioning groove (5523) or the positioning groove (5524) on the clutch drive rod (552). The cam (5521) contacts the clutch rod baffle (541) on the clutch rod body (54). The change of the position of the cam (5521) can drive the clutch rod body (54) to move along the axial direction of the clutch output shaft (53).

4. The reliable clutch brake winch according to claim 3, characterized in that: The side wall of the cam (5521) has a raised portion and a flat portion. When the raised portion contacts the clutch lever baffle (541), the clutch lever body (54) moves in a direction approaching the motor (2). When the flat portion contacts the clutch lever baffle (541), the clutch lever body (54) moves in a direction away from the motor (2). Changes in the position of the clutch lever body (54) change the position of the clutch end cover (521).

5. The reliable clutch brake winch according to claim 4, characterized in that: The brake mechanism (6) comprises a brake seat body (61), a locking bolt (611), a brake pad (62), a brake disc body (63), a brake clamping spring (64), a brake shaft (65), a brake sleeve (66), and a brake ring (69). The output shaft surface of the motor (2) is provided with an external spline, and one end of the brake shaft (65) is also provided with an external spline (651) that cooperates with each other. The motor (2) and the brake shaft (65) are spline-connected via a coupling (7). The brake clamping spring (64), the brake disc body (63), the brake pad (62), and the brake ring (69) are connected to each other. (62), a brake seat body (61) and a brake sleeve (66) are sequentially sleeved on the brake shaft (65), a friction layer is provided on the side of the brake disc body (63) close to the brake pad (62), friction layers are provided on both sides of the brake pad (62), a friction layer is provided on the side of the brake seat body (61) close to the brake pad (62), the brake seat body (61) is fixed to the roller (3) by a locking bolt (611) installed in the locking hole (612), the input end of the clutch input shaft (51) is a hexagonal shaft (511), and the brake sleeve (66) A hexagonal hole (662) is provided at one end close to the clutch input shaft (51), and the center hole of the brake ring (69) is also a hexagonal hole. The brake sleeve (66) and the brake ring (69) are sleeved on the clutch input shaft (51). The surface of the brake shaft (65) is provided with a brake disc pin (653) and a brake sleeve pin (654). The brake disc body (63) is provided with a brake disc slide groove (631). The brake sleeve (66) is provided with a brake sleeve slide groove (661). The brake disc pin (653), the brake sleeve pin (654), and the brake disc slide groove (631) are provided on the brake disc body (63). 1) and the brake sleeve groove (661) are symmetrical along the axis center, the brake disc pin (653) and the brake disc groove (631) are slidingly matched, the brake sleeve pin (654) and the brake sleeve groove (661) are slidingly matched, one end of the brake clamping spring (64) is against the limit plate (652) of the brake shaft (65), and the other end of the brake clamping spring (64) is against the brake disc body (63), and the brake clamping spring (64) presses the brake disc body (63) and the brake pad (62) against the surface of the brake seat body (61).

6. The reliable clutch brake winch according to claim 5, characterized in that: A brake seat boss (613) is provided on the surface of the brake seat body (61), and a plurality of locking grooves (614) are evenly distributed on the brake seat boss (613) along the circumferential direction, and a locking pin (615) is provided in each of the locking grooves (614). Spring lugs (616) are provided on both sides of each locking groove (614) on the end surface of the brake seat boss (613), and a locking claw (67) is provided on the locking pin (615). The locking claw (67) can rotate in the locking groove (614), one end of the locking claw (67) is connected to one end of the locking claw spring (68), and one end of the spring lug (616) is connected to the other end of the locking claw spring (68). Under the pulling force of the locking claw spring (68), the locking claw (67) moves toward the inside of the groove on the brake ring (69).

7. The reliable clutch brake winch according to claim 6, characterized in that: The reduction mechanism (4) is a two-stage planetary gear structure, comprising a first-stage planetary reduction mechanism consisting of a first-stage sun gear (532), a first-stage ring gear (41), a first-stage planetary gear (42), and a first-stage planetary carrier (43), and a second-stage planetary reduction mechanism consisting of a second-stage sun gear (44), a second-stage ring gear (45), a second-stage planetary gear (46), a second-stage planetary carrier (47), and a reducer output gear (48), wherein the first-stage sun gear (532) is located at an end of the clutch output shaft (53) away from the motor (2), and the first-stage planetary carrier The first gear (43) and the second gear (44) are meshed with each other through internal and external teeth. The second gear (44) and the second gear carrier (47) are sleeved on the clutch output shaft (53) and rotate relative to the clutch output shaft (53). The first gear carrier (43) is transmission-connected to the second gear (44). The second gear carrier (47) is fixedly connected to the output wheel (48) of the reducer. The output wheel (48) of the reducer is transmission-connected to the internal teeth (31) of the drum. The second gear ring (45) is fixedly connected to the capstan housing (1).

8. The reliable clutch brake winch according to claim 7, characterized in that: When the clutch rod body (54) contacts the raised portion on the cam (5521), the clutch end cover (521) moves toward the motor (2) and releases the outer toothed disc (522); when the clutch rod body (54) contacts the flat portion on the cam (5521), the clutch end cover (521) presses the outer toothed disc (522) and the inner toothed disc (523) under the action of the clutch pressing spring (524).

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