CN111847293A

CN111847293A - Capstan clutch

Info

Publication number: CN111847293A
Application number: CN201910746673.4A
Authority: CN
Inventors: 崔晓君
Original assignee: Ningbo Lianda Winch Co Ltd
Current assignee: Ningbo Lianda Winch Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-10-30
Anticipated expiration: 2039-08-14
Also published as: CN111847293B

Abstract

The invention discloses a winch clutch which is characterized by comprising a gear box and a movable gear ring rotationally connected with the gear box, wherein a clutch sleeve inserted into the gear box is arranged on the peripheral side wall of the gear box, the clutch sleeve is provided with a lifting jack and a clutch pull rod inserted into the lifting jack, one end, far away from the gear box, of the clutch pull rod is rotationally connected with a pushing assembly which drives the clutch pull rod to do reciprocating motion along the axial direction of the clutch sleeve, and when the pushing assembly rotates towards one end, the clutch pull rod moves towards the gear box and fixes the movable gear ring. The invention has the advantages that the effect of driving the clutch pull rod to do reciprocating motion along the axial direction of the clutch sleeve can be achieved by rotating the pushing assembly, and when the pushing assembly rotates towards one end, the clutch pull rod does motion towards the gear box, so that the movable gear ring is fixed, and the invention has the effects of convenient operation, space saving and remarkable clutch effect.

Description

Capstan clutch

Technical Field

The invention relates to the technical field of winches, in particular to a winch clutch.

Background

The winch is a machinery which is provided with a vertically-installed winch barrel and can wind a rope without storing the rope under the driving of power, also refers to a winch with a rotating axis vertical to a deck, is a self-protection and traction device for vehicles and ships, can carry out self-rescue and rescue in severe environments such as snowfields, marshes, deserts, beaches and muddy mountains, and can carry out operations such as obstacle removal, article dragging and installation under other conditions.

Chinese patent with publication number CN101337643B discloses an electric capstan clutch, which comprises a reducer casing, a clutch seat and a clutch rotating handle, wherein a fixed gear ring is arranged in the reducer casing, the reducer casing and the fixed gear ring are both provided with internal teeth, the electric capstan clutch further comprises a plane cam, external teeth are arranged on the plane cam, the external teeth are matched with the internal teeth, a clutch rotating shaft is arranged on one side of the plane cam, a propelling device of the plane cam is arranged on the clutch rotating shaft, and a reset device of the plane cam is arranged on the other side of the plane cam.

But this electronic capstan clutch's separation and reunion structure occupation space is great, leads to the capstan winch whole volume great, influences separation and reunion effect and use convenience, awaits improving.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a winch clutch which has the advantages of convenience in operation, space saving and remarkable clutch effect.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a capstan clutch, include the gear box and with the gear box rotates the movable ring gear of connecting, be provided with on the periphery lateral wall of gear box and insert clutch cover in the gear box, clutch cover is provided with the lift jack and pegs graft and be in clutch pull rod in the lift jack, the clutch pull rod is kept away from the one end of gear box is rotated and is connected with the drive the clutch pull rod is done the edge clutch cover axial reciprocating motion's promotion subassembly works as when promotion subassembly rotates to one end, the orientation is done to the clutch pull rod the motion of gear box just movable ring gear is fixed.

By adopting the technical scheme, the effect of driving the clutch pull rod to do reciprocating motion along the axial direction of the clutch sleeve can be achieved by horizontally rotating the pushing assembly, so that the clutch pull rod and the movable gear ring generate a clutch effect when doing reciprocating motion; at the moment, the pushing assembly only rotates in the circumferential direction to avoid the generation of lifting movement, and simultaneously, the effect of driving the clutch pull rod to reciprocate along the axial direction of the clutch sleeve is achieved; when the pushing assembly rotates towards one end, the clutch pull rod moves towards the gear box, so that the movable gear ring is fixed, and the clutch device has the advantages of being convenient to operate, saving space and being remarkable in clutch effect.

The invention is further configured to: the pushing assembly comprises a shifting handle which is rotatably connected with the top end of the clutch sleeve, a cam for inserting the upper end of the clutch pull rod is inserted into the lower end of the shifting handle, at least one lifting channel which is sequentially connected with the starting top, the lifting inclined arc surface and the locking bottom is arranged at the upper end of the cam, one end of a rolling needle which is inserted into the lifting channel and moves along the starting top, the lifting inclined arc surface and the locking bottom is inserted into the top end of the clutch pull rod, an inner tangent plane is arranged on the peripheral side wall of the clutch pull rod, the top end of the lifting jack is matched with the inner tangent plane, and a contact block is arranged on one side, close to the lifting inclined arc surface, of the starting top.

Through adopting above-mentioned technical scheme, the lift jack matches and reaches the purpose that showing the clutch pull rod and do circumferential direction in the clutch cover through the tangent plane on its top and the clutch pull rod periphery lateral wall, and then can make the kingpin of pegging graft on the hand top along starting the top through rotating the hand of dialling, lift sloping cambered surface and locking bottom move, and when dialling the hand rotation and kingpin and move to the start-up top, the conflict piece plays and avoids the kingpin to break away from and move to the effect of locking bottom from starting the top, show to promote the kingpin and move and fixed stability on the hoistway, the operation is convenient, the effect that space-saving and separation and reunion effect are showing.

The invention is further configured to: the two lifting ways are arranged symmetrically, two ends of the needle roller penetrate out of the top end of the clutch pull rod and then are inserted into the corresponding lifting ways, and the radian of each lifting way is 90 degrees.

By adopting the technical scheme, the two mutually symmetrical lifting ways are matched with the two ends of the corresponding roller pins, so that the purposes of further improving the moving stability of the roller pins on the lifting ways and the stability of the roller pins fixed on the lifting ways are achieved; correspondingly, the whole radian of the lifting way is set to be 90 degrees, so that the rotation of the shifting hand and the clutch control of the clutch are facilitated, and the effect of convenient operation is achieved.

The invention is further configured to: the clutch pull rod is characterized in that a lifting support column with the diameter larger than that of the clutch pull rod is arranged at the lower end of the clutch pull rod, the diameter of the lifting jack is matched with that of the lifting support column, and a clutch spring with two ends respectively abutted against the upper side wall of the lifting jack and the upper side wall of the lifting support column is sleeved on the clutch pull rod.

By adopting the technical scheme, the clutch spring generates elastic restoring force between the upper side wall of the lifting jack and the upper side wall of the lifting support column due to compression deformation, and further when the clutch sleeve is fixed with the gear box, the clutch spring applies a downward movement trend to the lifting support column, so that the roller pins inserted in the top end of the clutch pull rod are stably fixed in the corresponding starting top or locking bottom, and when the clutch pull rod is driven to move towards the movable gear ring, the roller pins move to the lifting inclined arc surface from the starting top, and further the roller pins move to the locking bottom along the lifting inclined arc surface under the driving of the elastic restoring force applied to the lifting support column by the clutch spring, so that the operation convenience of the clutch is improved.

The invention is further configured to: the bottom of cam is provided with inserts the switching chassis of clutch cover top internal rotation, the top of clutch cover is provided with top annular groove and cam spring leaf, be provided with the rubber packing ring in the top annular groove, the downside on switching chassis is provided with the fixed inside groove of two symmetric distributions, the cam spring leaf is provided with two and inserts correspondingly respectively the folding-up inserted part in the fixed inside groove works as folding-up inserted part inserts during fixed inside groove, the kingpin with it is fixed to start the top matching.

By adopting the technical scheme, when the clutch sleeve is fixed with the gear box and the cam is fixed with the shifting handle, the switching chassis inserted into the top of the clutch sleeve is arranged at the bottom of the cam, so that the movement stability of the cam and the clutch sleeve is obviously improved; when the roller pins move to the starting top, the upward folding insertion parts are matched with the fixed inner grooves in position, and then the upward folding insertion parts are inserted into the fixed inner grooves under the action of the elastic restoring force of the clutch spring, so that the purpose of further improving the fixing stability of the roller pins, the cam and the clutch pull rod is achieved when the roller pins are positioned on the starting top.

The invention is further configured to: the top of clutch cover is provided with cyclic annular spacing groove and two symmetric distribution's top and rotates the groove, the cam spring leaf is provided with two and inserts respectively correspondingly the top rotates the grafting stiff end of inslot, the switching chassis be provided with two symmetric distribution and with the spacing groove with the switching piece that the groove matches is rotated on the top, the thickness of switching piece with go up the height of book portion of inserting and with the high matching of spacing groove.

Through adopting above-mentioned technical scheme, the switching piece on the switching chassis will play the effect that promotes the mobility stability of cam and clutch cover after inserting the spacing inslot rotation through a top rotating groove to when rotating the hand setting aside and driving the cam and rotate, injecing the switching piece in the spacing inslot and remove, reduce the operation degree of difficulty of this clutch and effectively prolong the life of this clutch.

The invention is further configured to: be provided with clutch seal groove and packing ring annular on the periphery lateral wall of clutch cover, be provided with in the clutch seal groove with the clutch sealing washer of shifting hand butt, be provided with in the packing ring annular with the O type circle of gear box butt.

By adopting the technical scheme, the clutch sealing ring plays a role in obviously improving the connection sealing performance of the clutch sleeve and the shifting handle between the clutch sleeve and the shifting handle; correspondingly, the O-shaped ring plays a role in remarkably improving the connection sealing performance of the clutch sleeve and the gear box between the clutch sleeve and the gear box, and the problem that the service life of the clutch is influenced because external fluid enters the inside of the clutch is effectively avoided.

The invention is further configured to: the clutch device is characterized in that a plurality of clutch jacks distributed in an equal radian are arranged on the peripheral side wall of the movable gear ring, and the diameters of the clutch jacks are matched with the diameter of the bottom of the clutch pull rod.

Through adopting above-mentioned technical scheme, reach the purpose of locking activity ring gear after inserting the separation and reunion jack in one section of clutch pull rod to showing the separation and reunion effect that promotes this clutch when promoting the fixed stability of being connected of clutch pull rod and activity ring gear, having the simple operation, saving space and the effect that the separation and reunion effect is showing.

In conclusion, the invention has the following beneficial effects:

1. the cam is fixed through the shifting handle, and the clutch pull rod makes reciprocating motion in the clutch sleeve along the axial direction of the clutch sleeve when the shifting handle is rotated and drives the cam to rotate, so that the control difficulty and the space use of the clutch are obviously reduced;

2. the clutch sealing ring and the O-shaped ring are sleeved on the peripheral side wall of the clutch sleeve, so that the sealing performance of the clutch is obviously improved, and the service life of the clutch is prolonged;

3. through set up a plurality of separation and reunion jacks on the periphery lateral wall at the activity ring gear, promote the fixed stability of clutch pull rod and activity ring gear, and then reach the purpose that promotes the separation and reunion effect of this clutch.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic cross-sectional view of the present embodiment;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is an exploded view schematically illustrating the present embodiment;

FIG. 5 is a schematic structural view of the cam of the present embodiment;

fig. 6 is a schematic structural view of the clutch cover of the present embodiment.

Description of reference numerals: 1. a gear case; 11. rotating the tooth socket; 12. a limiting ring groove; 13. fixing the plug end; 2. dialing a hand; 3. a movable gear ring; 31. a clutch jack; 4. a large collar; 5. a clutch lever; 51. lifting support columns; 52. cutting into internal sections; 6. a clutch sleeve; 61. lifting jacks; 62. a clutch seal groove; 621. a clutch seal ring; 63. a gasket ring groove; 631. an O-shaped ring; 64. a top ring groove; 641. a rubber gasket; 65. a top rotating groove; 66. a limiting groove; 7. a clutch spring; 8. a cam; 81. a transfer chassis; 82. fixing the inner groove; 83. a transfer block; 84. lifting the inclined arc surface; 85. a locking bottom; 86. starting the top; 87. a contact block; 9. rolling needles; 10. a cam spring plate; 101. inserting a fixed end; 102. and an upper folding insertion part.

Detailed Description

In order to make the technical solution and advantages of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1, a capstan clutch includes a gear case 1. A movable gear ring 3 for transmission is rotatably connected in the gear box 1. The peripheral side wall of the gear box 1 is provided with a shifting handle 2, and the purpose of controlling the clutch to lock and start the movable gear ring 3 is achieved through the shifting handle 2.

As shown in fig. 2 and 3, a rotating tooth groove 11 matching the movable ring gear 3 is provided in the gear case 1, and a stopper ring groove 12 is provided outside the rotating tooth groove 11. Be provided with the big snap ring 4 that is the U-shaped in the spacing annular 12, big snap ring 4 plays and prescribes a limit to the effect in rotating tooth's socket 11 with activity ring gear 3, and then will show the fixed degree of difficulty of installation that reduces activity ring gear 3 through big snap ring 4's setting. A fixed spigot 13 is provided on the peripheral side wall of the gear case 1. A clutch sleeve 6 is fixedly inserted into the fixed insertion end 13. The clutch sleeve 6 is provided with a lifting jack 61 and a clutch pull rod 5 inserted in the lifting jack 61. One end of the clutch pull rod 5, which is far away from the gear box 1, is rotatably connected with a pushing component for driving the clutch pull rod 5 to do reciprocating motion along the axial direction of the clutch sleeve 6, so that the clutch pull rod 5 and the movable gear ring 3 generate a clutch effect when doing reciprocating motion; at the moment, the pushing assembly only rotates in the circumferential direction to avoid the generation of lifting movement, and simultaneously, the effect of driving the clutch pull rod 5 to reciprocate along the axial direction of the clutch sleeve 6 is achieved; and when the pushing assembly is rotated towards one end, the clutch pull rod 5 makes a movement towards the gear box 1 and fixes the gear box 1. When the pushing assembly is rotated, the effect of driving the clutch pull rod 5 to do axial reciprocating motion along the clutch sleeve 6 can be achieved, and when the pushing assembly rotates towards one end, the clutch pull rod 5 does motion towards the gear box 1, so that the gear box 1 is fixed, and the effects of convenience in operation, space saving and remarkable clutch effect are achieved.

As shown in fig. 3, 4 and 5, the pushing assembly includes a finger 2 disposed on a peripheral side wall of the gear housing 1 and a cam 8 inserted and fixed to a lower end of the finger 2. The hand lever 2 is rotatably connected with the top end of the clutch sleeve 6, and the upper end of the clutch pull rod 5 is inserted into the cam 8. At least one lifting way is arranged at the upper end of the cam 8 and is sequentially connected with a starting top 86, a lifting inclined arc surface 84 and a locking bottom 85, a roller pin 9 with one end inserted into the lifting way is inserted at the top end of the clutch pull rod 5, and the roller pin 9 moves along the starting top 86, the lifting inclined arc surface 84 and the locking bottom 85 after the shifting handle 2 is rotated and the cam 8 in the shifting handle 2 is driven to rotate. Meanwhile, an inner tangent plane 52 is provided on the outer circumferential sidewall of the clutch lever 5, and the tip of the elevation insertion hole 61 is matched with the inner tangent plane 52 (see fig. 6). Therefore, the lifting jack 61 achieves the purpose of obviously circumferential rotation of the clutch pull rod 5 in the clutch sleeve 6 by matching the top end thereof with the inner tangent surface 52 on the peripheral side wall of the clutch pull rod 5, and the needle roller 9 inserted at the top end of the hand lever 2 can move along the starting top 86, the lifting inclined arc surface 84 and the locking bottom 85 by rotating the hand lever 2. In order to avoid the roller pin 9 from being disengaged from the start top 86, a contact block 87 is arranged on one side of the start top 86 close to the ascending and descending inclined arc surface 84, and when the shifting handle 2 rotates and the roller pin 9 moves to the start top 86, the contact block 87 plays a role in avoiding the roller pin 9 from being disengaged from the start top 86 and moving to the locking bottom 85, so that the stability of the movement and fixation of the roller pin 9 on the ascending and descending way is obviously improved, and the clutch device has the effects of convenience in operation, space saving and obvious clutch effect. In order to improve the connection and fixation stability of the clutch pull rod 5 and the movable gear ring 3, a plurality of clutch insertion holes 31 distributed in an equal radian are further arranged on the peripheral side wall of the movable gear ring 3. The diameter of clutch jack 31 matches with the bottom diameter of clutch pull rod 5, and then can reach the purpose of locking movable ring gear 3 after one section at clutch pull rod 5 inserts in clutch jack 31 to show the separation and reunion effect that promotes this clutch when promoting clutch pull rod 5 and movable ring gear 3's connection fixed stability, have the simple operation, save space and the effect that the separation and reunion effect is showing.

It should be mentioned that the two elevator shafts are symmetrically arranged, and the two ends of the needle roller 9 are inserted into the corresponding elevator shafts after penetrating out of the top end of the clutch pull rod 5. Meanwhile, the overall radian of the two lifting ways is 90 degrees. The two mutually symmetrical lifting ways are matched with the two ends of the corresponding roller pins 9, so that the purposes of further improving the moving stability of the roller pins 9 on the lifting ways and the stability fixed on the lifting ways are achieved; correspondingly, the whole radian of the lifting way is set to be 90 degrees, so that the rotation of the hand plectrum 2 and the clutch control of the clutch are facilitated, and the effect of convenient operation is achieved.

As shown in fig. 3, 5, and 6, a lift column 51 having a diameter larger than that of the clutch lever 5 is provided at the lower end of the clutch lever 5. The diameter of the lifting jack 61 is matched with that of the lifting prop 51, and a clutch spring 7 with two ends respectively abutted against the upper side wall of the lifting jack 61 and the upper side wall of the lifting prop 51 is sleeved on the clutch pull rod 5. The clutch spring 7 generates elastic restoring force between the upper side wall of the lifting jack 61 and the upper side wall of the lifting abutment 51 due to compression deformation, and when the clutch sleeve 6 is fixed with the gear box 1, the clutch spring 7 applies a tendency of moving towards the movable gear ring 3 to the lifting abutment 51, so that the roller pin 9 inserted in the top end of the clutch pull rod 5 is stably fixed in the corresponding starting top portion 86 or locking bottom portion 85, and when the clutch pull rod 5 is driven to move towards the movable gear ring 3, the roller pin 9 moves from the starting top portion 86 to the lifting inclined arc surface 84, and further the roller pin 9 moves along the lifting inclined arc surface 84 and rapidly towards the locking bottom portion 85 under the driving of the elastic restoring force applied on the lifting abutment 51 by the clutch spring 7, so that the operation convenience of the winch clutch is improved. An adapter chassis 81 is provided at the bottom of the cam 8 to be inserted into the top of the clutch sleeve 6 and rotated. The top end of the clutch sleeve 6 is provided with a top ring groove 64 and a cam 8 spring piece. The top ring groove 64 is provided with a rubber gasket 641, the lower side of the adapter chassis 81 is provided with two fixed inner grooves 82 which are symmetrically distributed, the spring plate of the cam 8 is provided with two upward folding insertion parts 102 which are respectively inserted into the corresponding fixed inner grooves 82, and when the upward folding insertion parts 102 are inserted into the fixed inner grooves 82, the needle roller 9 is matched and fixed with the start top 86. Because the clutch sleeve 6 and the gear box 1 are fixed through bolts and the cam 8 and the hand lever 2 are simultaneously fixed through bolts, the switching chassis 81 inserted into the top of the clutch sleeve 6 is arranged at the bottom of the cam 8, so that the movement stability of the cam 8 and the clutch sleeve 6 is obviously improved; when the needle roller 9 moves to the start top 86, the position of the upward folding and inserting portion 102 matches with the position of the fixed inner groove 82, and further the upward folding and inserting portion 102 is inserted into the fixed inner groove 82 under the action of the elastic restoring force of the clutch spring 7, so that the purpose of further improving the fixing stability of the needle roller 9, the cam 8 and the clutch lever 5 when the needle roller 9 is located on the start top 86 is achieved. In order to further improve the movement stability of the cam 8 and the clutch sleeve 6, an annular limiting groove 66 and two symmetrically distributed top rotating grooves 65 are further arranged at the top end of the clutch sleeve 6. The cam 8 spring plate is provided with two insertion fixing ends 101 which are respectively inserted into the corresponding top rotating grooves 65. And two adapter blocks 83 which are symmetrically distributed and matched with the limiting groove 66 and the top rotating groove 65 are arranged on the adapter chassis 81. The sum of the thickness of the transfer block 83 and the height of the upper folded insertion part 102 matches the height of the limiting groove 66. Therefore, the transfer block 83 on the transfer chassis 81 is inserted into the limit groove 66 through the top rotating groove 65 to rotate, and then plays a role in improving the movement stability of the cam 8 and the clutch sleeve 6, and when the rotating dial 2 drives the cam 8 to rotate, the transfer block 83 is limited in the limit groove 66 to move, so that the operation difficulty of the clutch is reduced, and the service life of the clutch is effectively prolonged. In order to further extend the service life of the clutch, a clutch seal groove 62 and a washer ring groove 63 are provided on the outer peripheral side wall of the clutch sleeve 6. A clutch sealing ring 621 abutting against the shifting handle 2 is arranged in the clutch sealing groove 62, and an O-shaped ring 631 abutting against the gear box 1 is arranged in the gasket ring groove 63, so that the clutch sealing ring 621 arranged between the clutch sleeve 6 and the shifting handle 2 plays a role in remarkably improving the connection sealing performance of the clutch sleeve 6 and the shifting handle 2; correspondingly, the O-ring 631 arranged between the clutch sleeve 6 and the gear box 1 plays a role in remarkably improving the connection sealing performance of the clutch sleeve 6 and the gear box 1, and the service life of the winch clutch is effectively prolonged by preventing external fluid from entering the winch clutch to affect the service life of the winch clutch.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the present invention may occur to those skilled in the art without departing from the principle of the present invention, and such modifications and embellishments should also be considered as within the scope of the present invention.

Claims

1. The utility model provides a capstan clutch, including gear box (1) and with gear box (1) rotates movable ring gear (3) of being connected, its characterized in that: be provided with on the periphery lateral wall of gear box (1) and insert clutch cover (6) in gear box (1), clutch cover (6) are provided with lift jack (61) and peg graft and are in clutch pull rod (5) in lift jack (61), clutch pull rod (5) are kept away from the one end of gear box (1) is rotated and is connected with the drive clutch pull rod (5) are followed clutch cover (6) axial reciprocating motion's promotion subassembly, work as when promotion subassembly rotates to one end, clutch pull rod (5) are the orientation the motion of gear box (1) just movable ring gear (3) are fixed.

2. A capstan clutch according to claim 1, wherein: the pushing component comprises a shifting handle (2) which is rotationally connected with the top end of the clutch sleeve (6), the lower end of the shifting handle (2) is inserted with a cam (8) for inserting the upper end of the clutch pull rod (5), the upper end of the cam (8) is provided with at least one lifting way which is formed by sequentially connecting a starting top (86), a lifting inclined arc surface (84) and a locking bottom (85), the top end of the clutch pull rod (5) is inserted with a roller pin (9) with one end inserted into the lifting way and moving along the starting top (86), the lifting inclined arc surface (84) and the locking bottom (85), the peripheral side wall of the clutch pull rod (5) is provided with an inner tangent plane (52), the top end of the lifting jack (61) is matched with the inner tangent plane (52), and one side, close to the lifting inclined arc surface (84), of the starting top (86) is provided with a contact block (87).

3. A capstan clutch according to claim 2, wherein: the two lifting ways are arranged symmetrically, two ends of the needle rollers (9) penetrate out of the top end of the clutch pull rod (5) and then are inserted into the corresponding lifting ways, and the radian of each lifting way is 90 degrees.

4. A capstan clutch according to claim 2, wherein: the clutch is characterized in that a lifting support column (51) with the diameter larger than that of the clutch pull rod (5) is arranged at the lower end of the clutch pull rod (5), the diameter of the lifting jack (61) is matched with that of the lifting support column (51), and a clutch spring (7) with two ends respectively abutted against the upper side wall of the lifting jack (61) and the upper side wall of the lifting support column (51) is sleeved on the clutch pull rod (5).

5. A capstan clutch according to claim 4, wherein: the bottom of cam (8) is provided with inserts switching chassis (81) of clutch cover (6) top internal rotation, the top of clutch cover (6) is provided with top annular groove (64) and cam spring leaf (10), be provided with rubber packing ring (641) in top annular groove (64), the downside of switching chassis (81) is provided with two symmetric distribution's fixed inside groove (82), cam spring leaf (10) are provided with two and insert the correspondence respectively folded-up portion of inserting (102) in fixed inside groove (82), work as folded-up portion of inserting (102) inserts during fixed inside groove (82), kingpin (9) with it is fixed to start top (86) matching.

6. A capstan clutch according to claim 5, wherein: the top of clutch cover (6) is provided with cyclic annular spacing groove (66) and two symmetric distribution's top rotation groove (65), cam spring leaf (10) are provided with two and insert respectively correspondingly top rotation inslot (65) interior grafting stiff end (101), switching chassis (81) be provided with two symmetric distribution and with spacing groove (66) with top rotation groove (65) assorted switching piece (83), the thickness of switching piece (83) with go up the height of rolling over the portion of inserting (102) and with the high matching of spacing groove (66).

7. The capstan clutch of claim 6, wherein: be provided with clutch seal groove (62) and packing ring annular (63) on the periphery lateral wall of clutch cover (6), be provided with in clutch seal groove (62) with clutch sealing washer (621) of shifting hand (2) butt, be provided with in packing ring annular (63) with O type circle (631) of gear box (1) butt.

8. A capstan clutch according to claim 1, wherein: the clutch device is characterized in that a plurality of clutch jacks (31) distributed in an equal radian are formed in the peripheral side wall of the movable gear ring (3), and the diameters of the clutch jacks (31) are matched with the diameter of the bottom of the clutch pull rod (5).