CN110054101B

CN110054101B - Electric winch

Info

Publication number: CN110054101B
Application number: CN201910357268.3A
Authority: CN
Inventors: 许周来; 汪文敏
Original assignee: Jiangsu Huafeng Technology Co ltd
Current assignee: Jiangsu Huafeng Technology Co ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2024-02-09
Anticipated expiration: 2039-04-29
Also published as: CN110054101A

Abstract

The invention discloses an electric winch, which belongs to the technical field of winches and aims at providing an electric winch with long service life and high reliability. The clutch has the advantages that the driving gear sleeve and the clutch gear sleeve are arranged in a clamping mode, so that the service life of the clutch can be prolonged, and the working reliability of the clutch can be enhanced.

Description

Electric winch

Technical Field

The invention relates to the technical field of winches, in particular to an electric winch.

Background

The clutch is similar to a switch, and the clutch mechanism has a driving part and a driven part which can be separated temporarily and can be engaged gradually, and relative rotation is possible during transmission.

As shown in fig. 1 and 2, most of the clutches are realized by friction clamping, for example, an electric winch clutch currently comprises a bracket 200, a power shaft 206 is rotatably arranged on the bracket 200, one end of the power shaft 206 is driven by a driving motor 201, the driving motor 201 is fixedly arranged on the bracket 200, a winch 202 is rotatably sleeved on the power shaft 206, two friction plates 203 are sleeved on the power shaft 206, the two friction plates 203 are respectively positioned on two sides of the winch 202, a brake disc 204 is arranged between the friction plate 203 facing one side of the driving motor 201 and the bracket 200, the brake disc 204 is fixedly connected with the power shaft 206, a clutch 300 is arranged between the friction plate 203 far away from one side of the driving motor 201 and the bracket 200, the clutch 300 is in threaded connection with the bracket 200, a clamping block 205 matched with the clutch 300 is arranged on the bracket 200, and a wedge-shaped groove is arranged on the clamping block 205.

The clutch 300 comprises a clutch disc body 100 and a pin 303 which is radially arranged along the clutch disc body 100, the clutch disc body 100 is provided with an annular cavity 102 which is arranged around the center of the clutch disc body, the inner side and the outer side of the annular cavity 102 are respectively provided with an inner ring 103 and an outer ring 104, the center of the clutch disc body 100 is provided with an inner threaded through hole 101, the inner ring 103 is provided with a counter bore 301 which is radially arranged for placing the pin 303, the outer ring 104 is provided with a through hole 302 which corresponds to the counter bore 301, the bottom end of the pin 303 is inserted into the counter bore 301 and can stretch out and draw back at the counter bore 301, the top end of the pin 303 penetrates out of the through hole 302, the pin 303 is sleeved with a reset spring 305, the reset spring 305 is positioned in the annular cavity 102, the pin 303 is provided with a cotter 304 in a penetrating way, and the cotter 304 prevents the pin 303 from being separated from the through hole 302.

When the electric winch starts to anchor, the driving motor 201 drives the power shaft 206 to rotate, the power shaft 206 drives the clutch 300 to rotate, and when the pin 303 on the clutch 300 abuts against the stop, a speed difference is generated between the speed of the clutch 300 and the speed of the power shaft 206, so that the clutch 300 moves on the power shaft 206 along the direction towards the winch 202 until the clutch 300 drives the friction plates 203 to press the winch 202, and thus the friction plates 203 on two sides of the winch 202 jointly press the winch 202, and the brake disc 204 and the clutch 300 jointly drive the clutch 300 to rotate to realize the anchor.

Most of the clutches 300 currently adopt the above mode, the clutch 300 is tightly abutted against the friction plates 203, and the two friction plates 203 are tightly abutted against the winch 202, but in the long-term use process, the surfaces of the friction plates 203 are worn until the surfaces of the friction plates 203 are leveled, so that the friction plates 203 lose functions, the clutch 300 is disabled, and the service life of the friction plates 203 is reduced.

Disclosure of Invention

The invention aims to provide an electric winch which has the advantage of long service life.

The technical aim of the invention is realized by the following technical scheme:

an electric capstan comprises a U-shaped frame, a capstan wheel is arranged on the U-shaped frame, the capstan comprises a capstan shaft which is rotationally connected with the U-shaped frame, two baffles are arranged on the capstan shaft, one end of the capstan shaft extends out of the U-shaped frame and is driven by a motor, a worm gear case is arranged between the motor and the capstan shaft, a clutch is further arranged between the worm gear case and the capstan shaft, the clutch comprises a clutch shell which is fixedly arranged on the outer side wall of the U-shaped frame, a transmission gear shaft sleeve and a clutch gear shaft sleeve which is matched with the transmission gear shaft sleeve are rotationally arranged in the clutch shell, the transmission gear shaft sleeve is fixedly connected with the capstan shaft, a key groove which is axially arranged is arranged on the inner wall of the clutch gear shaft sleeve, a connecting key which is inserted into the key groove is arranged on an output shaft of the worm gear case,

the side face of the clutch gear shaft sleeve, which faces the transmission gear shaft sleeve, is provided with at least one first clamping tooth, the side face of the transmission gear shaft sleeve, which faces the clutch gear shaft sleeve, is provided with a second clamping groove matched with the first clamping tooth,

an annular clamping limit groove is arranged at one end of the clutch gear sleeve, which is close to the transmission gear sleeve, an annular separation limit groove is arranged at one end of the clutch gear sleeve, which is far away from the transmission gear sleeve, the clamping limit groove and the separation limit groove are both coaxially arranged with the clutch gear sleeve, a unidirectional spiral groove is also arranged on the clutch gear sleeve, one end of the unidirectional spiral groove is communicated with the clamping limit groove, the other end of the unidirectional spiral groove is communicated with the separation limit groove,

the clutch also comprises a clutch driving assembly with a fixed position, wherein the clutch driving assembly is arranged in a shaft shape, and one end of the clutch driving assembly is inserted into the unidirectional spiral groove through the clutch shell.

Through adopting above-mentioned technical scheme, during the use, the motor passes through worm gear case drive separation and reunion tooth axle sleeve rotation, thereby separation and reunion drive assembly inserts in the unidirectional spiral inslot and thereby drives separation and reunion tooth axle sleeve and follow separation and reunion tooth axle sleeve axis and advance and thereby make separation and reunion tooth axle sleeve and transfer tooth axle sleeve block be in the same place, alright drive transfer tooth axle sleeve rotation like this, and the transfer tooth axle sleeve drives capstan shaft rotation. Because the clutch gear shaft sleeve and the transmission gear shaft sleeve adopt a clamping mode, the plane contact transmission is realized, and the abrasion is very small. The service life of the clutch is greatly prolonged, and the electric winch is more reliable in working.

Further, at least three second clamping teeth are arranged on the side face, facing the clutch gear sleeve, of the transmission gear sleeve, each second clamping tooth is arranged around the axis of the transmission gear sleeve, and a second clamping groove is formed between every two adjacent second clamping teeth;

the clutch gear shaft sleeve is provided with at least three first clamping teeth towards the side face of the transmission gear shaft groove, each first clamping tooth is arranged around the axis of the clutch gear shaft sleeve, and a first clamping groove is formed between every two adjacent first clamping teeth.

Through adopting above-mentioned technical scheme, adopt a plurality of latches and draw-in groove cooperation for separation and reunion tooth axle sleeve and driving tooth axle sleeve connection are more stable, and job stabilization nature is also higher.

Further, the opposite side surfaces of the first latch and the second latch are set to be inclined surfaces, the inclined surfaces of the first latch are set from high to low along the rotation direction of the clutch gear sleeve when the clutch gear sleeve is clamped with the transmission gear sleeve, and the inclined surfaces of the second latch are set along the opposite direction of the inclined surfaces of the first latch.

By adopting the technical scheme, as the surfaces of the first latch and the second latch are set to be the slope surfaces, when the driving gear shaft sleeve and the clutch gear shaft sleeve rotate to be separated, the driving gear shaft sleeve and the clutch gear shaft sleeve rotate to be separated along the slope surfaces, and the separation is more reliable and rapid.

Further, a lead ring is fixedly arranged in the clutch shell, the clutch gear sleeve is positioned in the lead ring, the outer wall of the clutch gear sleeve is attached to the inner wall of the lead ring, a driving hole pointing to the axis of the clutch gear sleeve is arranged in the lead ring, and the clutch driving assembly penetrates through the driving hole and is clamped into the unidirectional spiral groove.

Through adopting above-mentioned technical scheme, the lead ring has direction and supporting action to the front and back displacement of separation and reunion tooth axle sleeve on one side, and on the other side also has supporting action to separation and reunion drive assembly for separation and reunion drive assembly during operation is more stable.

Further, be equipped with first bearing frame in the clutch housing, be equipped with first positioning bearing in the first bearing frame, the driving gear axle sleeve passes through bearing and first bearing frame fixed connection, be equipped with the skeleton oil blanket in the first bearing frame, the skeleton oil blanket is located first bearing frame and is kept away from clutch gear axle sleeve one end.

Through adopting above-mentioned technical scheme, in the skeleton oil blanket avoided the dust to get into casing and location bearing, the life of extension bearing, reinforcing clutch job stabilization nature.

Further, the clutch driving assembly comprises a guide pin, a compression spring and a compression screw, wherein the guide pin is inserted into the unidirectional spiral groove, the compression spring is positioned between the compression screw and the guide pin, one end of the compression screw is abutted against the compression spring, and a gap is reserved between the other end of the compression screw and the inner wall of the clutch shell.

By adopting the technical scheme, because the depth of the clamping limit groove is shallower than the depth of the unidirectional spiral groove, the guide pin is easier to be shifted into the unidirectional spiral groove from the clamping limit groove when the driving gear sleeve and the clutch gear sleeve are separated, and the compression spring applies pressure to the guide pin, so that the guide pin can move up and down conveniently.

Further, a waist-shaped groove is formed in the surface of the outer ring of the lead ring, the groove is formed in the axial direction of the lead ring, a through hole communicated with the groove is formed in the clutch shell, and a lead screw is arranged between the groove and the through hole in a penetrating mode.

By adopting the technical scheme, the setting of recess is convenient for separation and reunion drive assembly when shifting into one-way helicla flute by the block spacing groove, and the required motion distance of helical pitch ring.

Further, the winch shaft is equipped with one-way damper in the clutch one end dorsad, one-way damper includes the damping casing with U-shaped frame lateral wall fixed connection, be equipped with in the damping casing with winch shaft fixed connection's damping dish, the ring is equipped with four damping grooves of evenly arranging on the damping dish edge, the damping groove includes first bottom surface and first slip face, the contained angle of first bottom surface and first slip face is between 90 ~ 100 degrees, be equipped with wedge damping piece in the damping groove, the damping piece includes the second bottom surface relative with first bottom surface, the second slip face relative with first slip face, the arc damping face relative with damping casing inner wall, the radius of curvature of damping face is the same with the radius of curvature of damping dish, leave the space between first bottom surface and the second bottom surface, and be equipped with the pressure spring between first bottom surface and the second bottom surface, the direction of winch shaft pivoted is progressively by big grow along electric winch during operation.

Through adopting above-mentioned technical scheme, when needs electric capstan puts the rope, the motor passes through worm gear case drive separation and reunion tooth axle sleeve rotation, and separation and reunion tooth axle sleeve breaks away from with the transfer tooth axle sleeve under separation and reunion drive assembly's drive, and the capstan shaft rotates with higher speed under the action of the gravity of anchor, and the damping face of damping piece is contradicted with damping shell inner wall, reduces the rotation rate of capstan shaft, prevents that the anchor speed of whereabouts is too fast, leads to the capstan wheel to appear reversing, and the hawser produces the winding.

Further, the first bottom surface and the second bottom surface are respectively provided with a shaft hole, the two shaft holes are coaxially arranged, and two ends of the pressure spring are respectively inserted into the corresponding shaft holes.

Through adopting above-mentioned technical scheme, pressure spring both ends restriction in two shaft holes, pressure spring position deviation when preventing the damping dish to rotate.

Further, a second bearing is arranged on the damping shell, a second positioning bearing is arranged in the second bearing, and an inner ring of the second positioning bearing is fixedly connected with the capstan shaft.

By adopting the technical scheme, the second bearing supports the winch shaft, so that the stability of the winch shaft during rotation is maintained.

In summary, the invention has the following beneficial effects:

1. the transmission gear sleeve and the clutch gear sleeve are arranged in a clamping manner, so that the effects of prolonging the service life of the clutch and enhancing the working reliability of the clutch can be achieved;

2. the clutch adopts an assembled structure, is convenient to assemble, and can greatly improve the assembly efficiency;

3. high torque force transmission and reliable engagement;

4. the unidirectional damper prevents the falling anchor from being too fast, which results in the winch wheel reversing and the cable winding.

Drawings

FIG. 1 is a schematic view of a structure of an electric capstan in the background art;

FIG. 2 is a schematic diagram of a clutch configuration in the background art;

FIG. 3 is a schematic diagram showing the position of a clutch on an electric capstan in an embodiment;

FIG. 4 is a schematic diagram showing the position of a one-way damper on an electric capstan in an embodiment;

FIG. 5 is a schematic diagram of an embodiment for implementing a clutch;

FIG. 6 is a schematic diagram of a skeleton oil seal used in an embodiment of a clutch;

FIG. 7 is an enlarged view of portion A of FIG. 4 in an embodiment;

fig. 8 is a cross-sectional view of a one-way damper in an embodiment.

In the figure, a U-shaped frame is shown as a 1; 2. a capstan wheel; 21. a baffle; 22. a capstan shaft; 31. a motor; 32. a worm gear case; 4. a unidirectional damper; 41. a damping housing; 42. a damping disk; 43. a damping groove; 431. a first bottom surface; 432. a first slip plane; 44. a damping block; 441. a second bottom surface; 442. a second slip plane; 443. damping surface; 45. a shaft hole; 46. a second bearing seat; 47. a second positioning bearing; 48. a second hole retainer ring; 49. a protective shell; 410. a pressure spring; 5. a clutch; 6. a clutch housing; 61. a flange plate; 62. a first bearing seat; 63. a first positioning bearing; 64. a first hole retainer ring; 65. a framework oil seal; 7. a driving gear sleeve; 71. a second latch; 72. a second clamping groove; 8. clutch gear sleeve; 81. a first latch; 82. a first clamping groove; 83. a clamping limit groove; 84. separating the limit groove; 85. a unidirectional helical groove; 9. a clutch drive assembly; 91. a guide pin; 92. a compression spring; 93. a compression screw; 94. a lead screw; 10. a key slot; 110. a lead ring; 111. a drive hole; 112. a groove; 100. a clutch disc; 101. an internally threaded through hole; 102. an annular cavity; 103. an inner ring; 104. an outer ring; 200. a bracket; 201. a motor; 202. a winch; 203. a friction plate; 204. a brake disc; 205. a clamping block; 206. a power shaft; 300. a clutch; 301. countersink; 302. a through hole; 303. a pin; 304. a cotter pin; 305. and a reset spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples: an electric winch, as shown in fig. 3 and 4, comprises a U-shaped frame 1, wherein a winch wheel 2 is arranged on the U-shaped frame 1, a motor 31 for driving the winch wheel 2 to rotate is arranged at one end of the winch wheel 2, a worm gear case 32 is arranged between the motor 31 and the winch wheel 2, a clutch 5 is further arranged between the worm gear case 32 and the U-shaped frame 1, and a unidirectional damper 4 is arranged at one end of the winch wheel 2, which is opposite to the motor 31.

The capstan wheel 2 includes a capstan shaft 22 rotatably provided to the U-shaped frame 1 and shutters 21 provided at both ends of the capstan shaft 22.

As shown in fig. 5 and 6, the clutch 5 comprises a clutch housing 6 in a cylindrical arrangement, a gear sleeve 7, a clutch gear sleeve 8 matched with the gear sleeve 7 and a clutch driving assembly 9 are arranged in the clutch housing 6, the gear sleeve 7 and the clutch gear sleeve 8 are coaxially arranged, and the gear sleeve 7 and the clutch gear sleeve 8 are both rotatably arranged in the clutch housing 6. The clutch gear sleeve 8 is rotated by a worm gear case 32 (see fig. 3), the driving gear sleeve 7 is connected with a winch shaft 22 (see fig. 3), and the clutch gear sleeve 8 is clamped to drive the driving gear sleeve 7 to rotate.

The clutch gear sleeve 8 and the driving gear sleeve 7 are respectively provided with a key groove 10, and the key grooves 10 enable the clutch gear sleeve 8 to be in key connection with an output shaft of a worm gear case 32 (see fig. 3) and the driving gear sleeve 7 to be in key connection with a winch shaft 22 (see fig. 3).

The clutch housing 6 is provided with a flange 61 at the end facing away from the clutch gear sleeve 8, the flange 61 being used for mounting.

Four second clamping teeth 71 are arranged on the side face, facing the clutch gear shaft sleeve 8, of the driving gear shaft sleeve 7, the four second clamping teeth 71 are evenly distributed around the axis of the driving gear shaft sleeve 7, and second clamping grooves 72 are formed between two adjacent second clamping teeth 71.

The clutch gear sleeve 8 is provided with four first latches 81 towards the side of the transmission gear sleeve 7, the four first latches 81 are evenly distributed around the axis of the clutch gear sleeve 8, and a first clamping groove 82 is formed between every two adjacent first latches 81.

In use, the first latch 81 is engaged into the second latch 72, and the second latch 71 is engaged into the first latch 82, thereby engaging the clutch sleeve 8 with the driving sleeve 7.

The opposite side surfaces of the first latch 81 and the second latch 71 are set to be inclined surfaces, the inclined surface of the first latch 81 is set from high to low along the rotation direction of the clutch gear sleeve 8 when the clutch gear sleeve 8 is clamped with the transmission gear sleeve 7, and the inclined surface of the second latch 71 is set along the opposite direction of the inclined surface of the first latch 81. The driving gear sleeve 7 and the clutch gear sleeve 8 are separated along the slope surface in a rotating way, so that the clutch gear is more convenient.

An annular clamping limit groove 83 is formed in one end, close to the driving gear shaft sleeve 7, of the clutch gear shaft sleeve 8, an annular separation limit groove 84 is formed in one end, far away from the driving gear shaft sleeve 7, of the clutch gear shaft sleeve 8, and the clamping limit groove 83 and the separation limit groove 84 are coaxial with the clutch gear shaft sleeve 8. The clutch gear sleeve 8 is also provided with a one-way spiral groove 85, one end of the one-way spiral groove 85 is communicated with the clamping limit groove 83, and the other end is communicated with the separation limit groove 84.

The clutch driving assembly 9 is in an axial arrangement, and when the clutch gear sleeve 8 rotates, the clutch driving assembly 9 is clamped into the unidirectional spiral groove 85, so that the clutch gear sleeve 8 moves towards the direction of the transmission gear sleeve 7 along the axial direction of the clutch gear sleeve 8, and the clutch gear sleeve and the transmission gear sleeve are clamped together.

A lead ring 110 is fixedly arranged in the clutch housing 6, the clutch gear sleeve 8 is positioned in the lead ring 110, and the lead ring 110 and the clutch gear sleeve 8 are coaxially arranged. The lead ring 110 is provided with a driving hole 111 pointing to the axis of the clutch gear sleeve 8, and the clutch driving assembly 9 is sequentially inserted into the unidirectional spiral groove 85 through the clutch housing 6 and the driving hole 111. The lead ring 110 has guiding and supporting functions for the forward and backward displacement of the clutch hub 8.

The clutch driving assembly 9 comprises a guide pin 91 inserted into the unidirectional spiral groove 85, a compression spring 92 and a compression screw 93, wherein the compression spring 92 is positioned between the compression screw 93 and the guide pin 91, one end of the compression screw 93 is abutted against the compression spring 92, and the other end of the compression screw 93 is in clearance with the inner wall of the clutch shell 6.

Because the depth of the clamping limiting groove 83 is shallower than that of the unidirectional spiral groove 85, the guide pin 91 is easier to be turned into the unidirectional spiral groove 85 from the clamping limiting groove 83 when the driving gear sleeve 7 and the clutch gear sleeve 8 are separated, and the compression spring 92 applies pressure to the guide pin 91, so that the guide pin 91 can move up and down conveniently.

The outer ring surface of the lead ring 110 is provided with a waist-shaped groove 112, the groove 112 is arranged along the axial direction of the lead ring 110, the clutch housing 6 is provided with a through hole communicated with the groove 112, and a lead screw 94 is arranged between the groove 112 and the through hole in a penetrating way. The provision of the groove 112 facilitates the required distance of movement of the lead ring 110 when the clutch driving assembly 9 is rotated from the snap fit limit groove 83 to the one-way helical groove 85.

The clutch housing 6 is internally provided with a first bearing seat 62, the first bearing seat 62 is internally provided with a first positioning bearing 63, two sides of the first positioning bearing 63 are respectively provided with a first hole check ring 64 for fixing the first positioning bearing 63 in the first bearing seat 62, and the inner ring of the driving gear shaft sleeve 7 is fixedly connected with the first bearing seat 62. The first bearing seat 62 is internally provided with a framework oil seal 65, and the framework oil seal 65 is positioned at one end of the first bearing seat 62, which is opposite to the clutch gear shaft sleeve 8.

As shown in fig. 7 and 8, the unidirectional damper 4 includes a damping housing 41 fixedly connected to the outer side wall of the U-shaped frame 1, a damping disc 42 fixedly connected to the capstan shaft 22 (see fig. 3) is provided in the damping housing 41, and the damping disc 42 is connected to the capstan shaft 22 (see fig. 3) by a key fit.

Four uniformly arranged damping grooves 43 are annularly arranged on the edge of the damping disc 42, the damping grooves 43 comprise a first bottom surface 431 and a first sliding surface 432, and an included angle between the first sliding surface 432 and the first bottom surface 431 is between 90 and 100 degrees. The damping groove 43 is internally provided with a wedge-shaped damping block 44, the damping block 44 comprises a second bottom surface 441 opposite to the first bottom surface 431, a second sliding surface 442 opposite to the first sliding surface 432 and an arc-shaped damping surface 443 opposite to the inner wall of the damping shell 41, the curvature radius of the damping surface 443 is the same as that of the damping disc 42, and the damping block 44 gradually becomes smaller from large to small along the rotating direction of the winch shaft 22 (see fig. 3) when the electric winch works.

A gap is reserved between the first bottom surface 431 and the second bottom surface 441, a pressure spring 410 is arranged between the first bottom surface 431 and the second bottom surface 441, shaft holes 45 are respectively arranged in the first bottom surface 431 and the second bottom surface 441, two shaft holes 45 on the first bottom surface 431 and the second bottom surface 441 are coaxially arranged, and two ends of the pressure spring 410 are respectively inserted into the corresponding shaft holes 45.

The damping shell 41 is provided with a second bearing 46, a second positioning bearing 47 is arranged in the second bearing 46, an inner ring of the second positioning bearing 47 is fixedly connected with the winch shaft 22 (see fig. 3), and a second hole retainer ring 48 is also arranged in the second bearing 46.

A protective shell 49 is provided on the damping housing 41 to prevent dust from entering the second positioning bearing 47.

The specific implementation process comprises the following steps: the clutch gear sleeve 8 is in transition fit connection with the output shaft of the worm gear case 32, the motor 31 drives the clutch gear sleeve 8 to rotate through the worm gear case 32, the clutch gear sleeve 8 rotates along with the motor, the guide pin 912 moves in the unidirectional spiral groove 85 to drive the clutch gear sleeve 8 to move leftwards, the clutch gear sleeve 8 is clamped with the transmission gear sleeve 7 to drive the transmission gear sleeve 7 to rotate, the winch shaft 22 connected with the transmission gear sleeve 7 is driven to rotate together, at the moment, the damping block 44 moves towards the first bottom surface 431 by overcoming the elastic force of the pressure spring 410, the damping surface 443 of the damping block 44 and the damping shell 41 generate smaller resistance, and the normal operation of the winch is hardly influenced;

when the output shaft of the worm gear case 32 rotates anticlockwise, the gear engaging sleeve is separated from the driving gear sleeve 7, at this time, the lead ring 110 moves rightwards to ensure that the guide pin 912 enters the unidirectional spiral groove 85 to move, so that the clutch gear sleeve 8 is further separated until being separated from the driving gear sleeve 7, the clutch gear sleeve 8 is further separated until being separated, at this time, the unidirectional damper 4 works, the wedge-shaped damping block 44 is matched with the damping surface 443 of the clutch housing 6 to rub under the action of the pressure spring 410, a damping effect is generated, the falling anchor speed is prevented from being too fast, the winch wheel 2 is reversely rotated, and the mooring rope is wound.

The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

Claims

1. The utility model provides an electric capstan, includes U-shaped frame (1), be equipped with capstan wheel (2) on U-shaped frame (1), the capstan winch includes capstan winch axle (22) of being connected with U-shaped frame (1) rotation, is equipped with two baffles (21) on capstan winch axle (22), capstan winch axle (22) one end stretches out U-shaped frame (1) and is driven by motor (31), be equipped with worm gear case (32) between motor (31) and capstan winch axle (22), still be equipped with clutch (5) between worm gear case (32) and capstan winch axle (22), its characterized in that: the clutch (5) comprises a clutch shell (6) fixedly arranged on the outer side wall of the U-shaped frame (1), a transmission gear shaft sleeve (7) and a clutch gear shaft sleeve (8) matched with the transmission gear shaft sleeve (7) are arranged in the clutch shell (6), the transmission gear shaft sleeve (7) is fixedly connected with a winch shaft (22), a key groove (10) axially arranged on the inner wall of the clutch gear shaft sleeve (8), a connecting key inserted into the key groove (10) is arranged on an output shaft of the worm gear case (32), at least one first clamping tooth (81) is arranged on the side surface of the clutch gear shaft sleeve (8) facing the transmission gear shaft sleeve (7), a second clamping groove (72) matched with the first clamping tooth (81) is arranged on the side surface of the transmission gear shaft sleeve (7) facing the clutch gear shaft sleeve (8), an annular clamping limit groove (83) is arranged on one end of the clutch gear shaft sleeve (8) close to the transmission gear shaft sleeve (7), an annular limit groove (84) is arranged on one end of the clutch gear shaft sleeve (8) far away from the transmission gear shaft sleeve (7), at least one first clamping groove (81) is arranged on the side of the clutch gear shaft sleeve (8), one end (83) is communicated with the one end of the clutch gear shaft sleeve (85) and the one-way clutch gear shaft sleeve (85) respectively, the other end is communicated with a separation limit groove (84), the clutch (5) further comprises a clutch driving assembly (9) with a fixed position, the clutch driving assembly (9) is arranged in a shaft shape, one end of the clutch driving assembly (9) penetrates through the clutch shell (6) and is inserted into the unidirectional spiral groove (85), at least three second clamping teeth (71) are arranged on the side face, facing the clutch tooth shaft sleeve (8), of the transmission tooth shaft sleeve (7), each second clamping tooth (71) is arranged around the axis of the transmission tooth shaft sleeve (7), and a second clamping groove (72) is formed between every two adjacent second clamping teeth (71); the clutch gear shaft sleeve (8) is equipped with at least three first latch (81) towards the side of transmission gear shaft groove, and each first latch (81) encircles clutch gear shaft sleeve (8) axis setting, is equipped with first draw-in groove (82) between two adjacent first latch (81) clutch housing (6) internal fixation has lead ring (110), clutch gear shaft sleeve (8) are located lead ring (110), clutch gear shaft sleeve (8) outer wall and laminating of lead ring (110) inner wall, be equipped with in lead ring (110) drive hole (111) of directional clutch gear shaft sleeve (8) axis, clutch drive assembly (9) pass drive hole (111) card and go into unidirectional spiral groove (85).

2. An electric winch according to claim 1, characterized in that: the opposite side surfaces of the first latch (81) and the second latch (71) are set to be inclined surfaces, the inclined surfaces of the first latch (81) are arranged from high to low along the rotation direction of the clutch gear shaft sleeve (8) when the clutch gear shaft sleeve (8) is clamped with the transmission gear shaft sleeve (7), and the inclined surfaces of the second latch (71) are arranged along the opposite direction of the inclined surfaces of the first latch (81).

3. An electric winch according to claim 1, characterized in that: be equipped with first bearing frame (62) in clutch housing (6), be equipped with first positioning bearing (63) in first bearing frame (62), driving gear axle sleeve (7) pass through bearing and first bearing frame (62) fixed connection, be equipped with skeleton oil blanket (65) in first bearing frame (62), skeleton oil blanket (65) are located first bearing frame (62) and are kept away from clutch gear axle sleeve (8) one end.

4. An electric winch according to claim 3, characterized in that: the clutch driving assembly (9) comprises a guide pin (91) inserted into the unidirectional spiral groove (85), a compression spring (92) and a compression screw (93), wherein the compression spring (92) is positioned between the compression screw (93) and the guide pin (91), one end of the compression screw (93) is abutted against the compression spring (92), and a gap is reserved between the other end of the compression screw and the inner wall of the clutch shell (6).

5. An electric winch according to claim 4, wherein: the novel clutch is characterized in that a waist-shaped groove (112) is formed in the outer ring surface of the lead ring (110), the groove (112) is formed in the axial direction of the lead ring (110), a through hole communicated with the groove (112) is formed in the clutch shell (6), and a lead screw (94) is arranged between the groove (112) and the through hole in a penetrating mode.

6. An electric winch according to claim 1, characterized in that: the winch shaft (22) is provided with a unidirectional damper (4) at one end facing away from the clutch (5), the unidirectional damper (4) comprises a damping shell (41) fixedly connected with the outer side wall of the U-shaped frame (1), a damping disc (42) fixedly connected with the winch shaft (22) is arranged in the damping shell (41), four uniformly distributed damping grooves (43) are annularly arranged on the edge of the damping disc (42), the damping groove (43) comprises a first bottom surface (431) and a first sliding surface (432), the included angle between the first bottom surface (431) and the first sliding surface (432) is between 90 and 100 degrees, a wedge-shaped damping block (44) is arranged in the damping groove (43), the damping block (44) comprises a second bottom surface (441) opposite to the first bottom surface (431), a second sliding surface (442) opposite to the first sliding surface (432), an arc-shaped damping surface (443) opposite to the inner wall of the damping shell (41), the radius of curvature of the damping surface (443) is identical to that of the damping disc (42), a compression spring (410) is reserved between the first bottom surface (431) and the second bottom surface (431), the damping block (44) gradually becomes smaller from larger to smaller along the rotating direction of the winch shaft (22) when the electric winch works.

7. An electric winch according to claim 6, wherein: shaft holes (45) are formed in the first bottom surface (431) and the second bottom surface (441), the two shaft holes (45) are coaxially arranged, and two ends of the pressure spring (410) are respectively inserted into the corresponding shaft holes (45).

8. An electric winch according to claim 6, wherein: the damping shell (41) is provided with a second bearing (46), a second positioning bearing (47) is arranged in the second bearing (46), and the inner ring of the second positioning bearing (47) is fixedly connected with the winch shaft (22).