CN109630567B

CN109630567B - Clutch assembly

Info

Publication number: CN109630567B
Application number: CN201811576897.7A
Authority: CN
Inventors: 王永刚; 郝登运; 王建楹; 曹红亮; 王旺球; 赵栓龙
Original assignee: CISC Haiwei Zhengzhou High Tech Co Ltd
Current assignee: China Shipbuilding Haiwei High tech Co.,Ltd.
Priority date: 2018-12-23
Filing date: 2018-12-23
Publication date: 2020-12-04
Anticipated expiration: 2038-12-23
Also published as: CN109630567A

Abstract

A clutch assembly comprises a cam serving as a driving shaft and a supporting seat which is hollow inside, wherein a transmission shaft and a bidirectional overrunning clutch driven by a driving inner ring of an outer ring are arranged in the hollow part in the supporting seat; the cam is arranged on one side of the supporting seat, the cam is fixedly connected with the outer ring of the one-way clutch, the inner ring of the one-way clutch is fixedly connected with the connecting flange, and the connecting flange is fixedly connected with the outer ring of the two-way overrunning clutch. The invention can realize that the inner ring of the bidirectional overrunning clutch as the driven shaft can freely rotate in two directions when the cam as the driving shaft is not moved, thereby being applied to various occasions with requirements.

Description

Clutch assembly

Technical Field

The invention belongs to the field of transmission systems, particularly relates to a clutch assembly, and particularly relates to a device capable of being used for emergency unlocking of a train transmission system.

Background

With the rapid development of urban rail transit in China, the urban rail vehicles mainly aim at rapidly and safely conveying a large number of passengers, and a train door system is an important component in the rail vehicles and directly influences the normal operation of the vehicles and the safety of the passengers; the emergency unlocking device is one of two key cores in a train door system, when an emergency (such as a fire, a power supply fault, a control system fault, a signal system fault and the like) occurs in the operation of equipment, a train door channel needs to be opened through the emergency unlocking device to evacuate passengers so as to avoid major accidents, and the emergency unlocking device is the last barrier for ensuring the safety of the passengers in the train system, so that the reliability and the safety and the stability of the emergency unlocking device are the key of whether the train door system can embody the safety function of the train door system.

The emergency unlocking device applied to the train door system at present is low in reliability due to the fact that the structure is complex, the occupied space is prone to clamping stagnation when unlocking is achieved, and the manufacturing cost of the existing emergency unlocking device is high due to non-standard design. The electromagnetic clutch assembly structure has certain defects in the aspects of installation space, torque use, working condition applicability of a train system and the like, so that the requirements of an emergency unlocking device cannot be met.

Disclosure of Invention

The invention provides a clutch assembly which is simple in structure, simple to operate and small in occupied space and is used as an emergency unlocking device of a train sliding plug door to solve the problems in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

a clutch assembly comprises a cam serving as a driving shaft and a supporting seat which is hollow inside, wherein a transmission shaft and a bidirectional overrunning clutch driven by a driving inner ring of an outer ring are arranged in the hollow part in the supporting seat;

the cam is arranged on one side of the supporting seat, the cam is fixedly connected with the outer ring of the one-way clutch, the inner ring of the one-way clutch is fixedly connected with the connecting flange, and the connecting flange is fixedly connected with the outer ring of the two-way overrunning clutch;

the cam is driven by the one-way clutch, the connecting flange and the two-way overrunning clutch to drive the transmission shaft to rotate for a set angle when rotating for the set angle under the action of external force, and the cam resets under the action of the reset device after the external force is cancelled.

The supporting seat is provided with a position for limiting the unidirectional rotation of the cam, and after the external force applied to the cam is removed, the cam returns to the position of the limiting pin under the action of the reset device to be limited.

The resetting device comprises a torsion spring, one end of the torsion spring is embedded into the hole in the cam, and the other end of the torsion spring is limited through a torsion spring limiting pin arranged on the supporting seat.

The bidirectional overrunning clutch also comprises a shifting fork which rotates along with the outer ring of the bidirectional overrunning clutch, the shifting fork is provided with at least two outward raised heads, and an included angle between every two adjacent raised heads is a set angle rotated by the cam when the cam rotates once;

two ball plungers are arranged on the supporting seat, and the included angle between the two ball plungers is the same as the included angle between two adjacent raised heads of the shifting fork;

when the cam rotates for a set angle under the action of external force, the one-way clutch drives the shifting fork which rotates along with the outer ring of the two-way overrunning clutch to rotate for the set angle, and then two adjacent raised heads of the shifting fork are enveloped between the two ball-head plungers.

When the cam is driven by external force to move the shifting fork, the length of one ball plunger extending into the supporting seat is greater than or less than the length of the other ball plunger extending into the supporting seat along the moving direction of the cam.

The bidirectional overrunning clutch is characterized by further comprising a supporting bearing, the supporting bearing is arranged outside an outer ring of the bidirectional overrunning clutch along the axial direction of the connecting transmission shaft, the inner ring of the supporting bearing is matched with the outer ring of the bidirectional overrunning clutch through a shaft hole to realize assembly connection, and the outer ring of the supporting bearing is axially constrained through an inner hole step on the supporting seat.

And the two sides of the outer side of the inner ring of the support bearing are axially constrained by a boss of the outer ring of the bidirectional overrunning clutch and a boss of the connecting flange respectively.

The cam is connected with the outer ring of the one-way clutch through a key III, the connecting flange is fixedly connected with the inner ring of the one-way clutch through a key II, and the connecting flange is fixedly connected with the outer ring of the two-way overrunning clutch through a bolt assembly.

And a micro-motion detection switch for detecting the rotating angle of the cam is arranged on the supporting seat.

The sliding plug door transmission system comprises a shaft, a door lock device is arranged on the shaft, and the sliding plug door transmission system also comprises a clutch assembly, wherein the end part of the shaft is a transmission shaft of the clutch assembly.

The invention has the beneficial effects that:

(1) the bidirectional overrunning clutch can realize that the inner ring of the bidirectional overrunning clutch as the driven shaft can freely rotate in two directions when the cam as the driving shaft is not moved, and further can be applied to various occasions with requirements;

(2) when the driving direction of the one-way clutch and the matching size of the ball plunger relative to the supporting seat are adjusted, clockwise one-way driving and anticlockwise one-way driving of the basic core component can be achieved, and the universality is improved;

(3) when the driving shaft drives the driven shaft to rotate by an angle alpha in a single direction, the driving shaft automatically resets under the action of the torsion spring and repeats in sequence, and meanwhile, the micro switch assembly can detect whether the rotation angle alpha of the cam is in place or not, so that the driving shaft has the function of intermittently driving the driven shaft to rotate in the single direction in a reciprocating swinging manner and the function of detecting and detecting the in-place swing angle of the driving shaft;

(4) the one-way clutch and the 2 groups of ball head plungers in the basic core component are standardized mature parts, and the two-way overrunning clutch is an existing mature product, so that the bidirectional overrunning clutch has the characteristics of simple structure, high reliability, good universality, low cost and the like;

(5) the emergency unlocking device can be applied to the train door transmission system, the safety and the reliability can be improved, core basic parts of the emergency unlocking device are standard mature parts or existing mature products, and one-way clockwise and one-way anticlockwise driving can be realized, so that the emergency unlocking device has the advantages of being simple in structure, high in reliability, good in universality, low in cost and the like, the requirements of the emergency unlocking device of the train door transmission system can be completely met, and the emergency unlocking device has a very good effect on batch production engineering application.

Drawings

Fig. 1 is a sectional view of the present invention taken along the axial direction of a propeller shaft.

Fig. 2 is a schematic sectional view taken along the fork of fig. 1.

Fig. 3 is a side view a of fig. 1.

Fig. 4 is a schematic diagram of a connection mode of the present invention.

Fig. 5 is a schematic view of another connection mode of the present invention.

FIG. 6 is an operational schematic view a of the clutch assembly of FIG. 4 in a connected relationship, wherein (1) is a cross-sectional view taken axially along the drive shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 7 is an operational schematic b of the clutch assembly of the connection shown in FIG. 4, wherein (1) is a sectional view taken along the axial direction of the drive shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 8 is an operational schematic view c of the clutch assembly of the connection illustrated in FIG. 4, wherein (1) is a sectional view taken along the axial direction of the drive shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 9 is an operational schematic view d of the clutch assembly of the connection shown in FIG. 4, wherein (1) is a sectional view taken along the axial direction of the drive shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 10 is an operational schematic view e of the clutch assembly of FIG. 4 in the connected relationship, wherein (1) is a cross-sectional view taken axially along the drive shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 11 is an operational schematic f of the clutch assembly of the connection illustrated in FIG. 4, wherein (1) is a cross-sectional view taken axially along the driveshaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 12 is an operational schematic g of the clutch assembly of the connection illustrated in FIG. 4, wherein (1) is a sectional view taken along the axial direction of the driveshaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 13 is an operational schematic view h of the clutch assembly of the connection shown in FIG. 4, wherein (1) is a sectional view taken along the axial direction of the propeller shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

FIG. 14 is an operational schematic view a of the clutch assembly of the connection illustrated in FIG. 4, wherein (1) is a sectional view taken along the axial direction of the drive shaft; (2) is a section schematic view along the shifting fork, and (3) is a side view A of (1).

Detailed Description

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

The invention provides a clutch assembly which comprises a one-way clutch 11, a two-way overrunning clutch 3 with an outer ring driving and an inner ring driven, a connecting flange 8, a transmission shaft 1, a cam 9 serving as a driving shaft and a supporting seat 17 with a hollow interior, wherein one end part of the transmission shaft 1 penetrates through one side of the hollow interior of the supporting seat 17 and then is arranged in the hollow interior of the supporting seat 17, the transmission shaft is supported by the two-way overrunning clutch 3 and a supporting bearing 5 which are arranged in the hollow interior of the supporting seat 17, and the transmission shaft 1 is assembled and connected with an inner ring 31 of the two-way overrunning clutch 3.

Cam 9 and one-way clutch 11 set up the opposite side at supporting seat 17, flange 8's one end is located supporting seat 17's opposite side, the other end is located supporting seat 17's inside cavity department, cam 9 and one-way clutch 11's outer lane fixed connection, flange 8's inner circle and flange 8's one end are through key II 17 and retaining ring I13 realization fixed connection, flange 8's the other end and two-way freewheel clutch 3's outer lane are realized along the axial fixed connection of transmission shaft by shaft hole cooperation and bolt assembly 6.

The invention also comprises a resetting device, when the cam 9 rotates for a set angle under the action of external force, the one-way clutch 11, the connecting flange 8 and the two-way overrunning clutch 3 drive the transmission shaft 1 to rotate for the set angle, and after the external force is cancelled, the cam 9 resets under the action of the resetting device.

The bidirectional overrunning clutch 3 comprises an inner ring 31 and an outer ring 33, the inner ring of the bidirectional overrunning clutch 3 is fixedly connected with the transmission shaft 1, and the outer ring 33 of the bidirectional overrunning clutch 3 is fixedly connected with the connecting flange 8. The bidirectional overrunning clutch selected by the invention has the function that the outer ring is static and the inner ring is free, so that the inner ring of the bidirectional overrunning clutch as a driven shaft can rotate freely.

When the cam 9 rotates for a set angle under the action of external force, the connecting flange 8 can be driven through the one-way clutch 11, and then the outer ring of the bidirectional overrunning clutch 3 is driven through the connecting flange 8 to rotate for a set angle, the inner ring of the bidirectional overrunning clutch 3 drives the inner ring of the bidirectional overrunning clutch to rotate for a set angle, and then the transmission shaft 1 is driven to rotate for a set angle, and after the external force is removed, the cam 9 can reset under the action of the resetting device.

The supporting seat 17 is provided with a limit pin 16 for limiting the unidirectional rotation of the cam 9, and after the external force applied to the cam 9 is removed, the cam 9 returns to the position of the limit pin 16 under the action of the reset device to be limited.

The reset device comprises a torsion spring 10, wherein the torsion spring 10 is embedded in a step hole of the cam 9, one end of the torsion spring is fixed on the cam 9, and the other end of the torsion spring is supported and restrained by a torsion spring limit pin 21 fixed on the support seat 17.

The invention also comprises a shifting fork 32 which rotates along with the inner ring 31 of the bidirectional overrunning clutch 3, the arrangement of the shifting fork 32 belongs to the conventional arrangement of the bidirectional overrunning clutch, the shifting fork 32 rotates along with the outer ring 33 of the bidirectional overrunning clutch 3, when the shifting fork 32 is acted by external force, the outer ring 33 of the bidirectional overrunning clutch 3 is driven to drive the inner ring 31 of the bidirectional overrunning clutch 3 to rotate, the shifting fork 32 is provided with at least two outward raised heads, and the included angle between every two adjacent raised heads is a set angle rotated when the cam 9 rotates once.

A ball plunger I4 and a ball plunger II18 are arranged on the supporting seat 17, and the included angle between the two ball plungers is the same as the included angle between two adjacent raised heads of the shifting fork 32; when the cam 9 rotates for a set angle under the action of external force, the one-way clutch 11 drives the shifting fork 32 which rotates along with the outer ring 33 of the two-way overrunning clutch 3 to rotate for the set angle, and then two adjacent raised heads of the shifting fork 32 are enveloped between the two ball-head plungers.

When the cam 9 is driven by external force to move the shifting fork, the length of one of the ball plungers extending into the supporting seat 17 is larger or smaller than the length of the other ball plunger and extending into the supporting seat 17 by adjusting the assembly size of the ball plunger between the supporting seats 17 along the moving direction of the cam 9, so that the extending lengths of the first ball plunger and the second ball plunger relative to the supporting seat 17 can be respectively adjusted, and the cam 9 is matched with the first ball plunger and the second ball plunger to achieve the purposes of reducing the resistance of the shifting fork 32 and adjusting the driving force of the cam 9. According to the working principle of the clutch, generally along the moving direction of the cam 9, the length of the first ball plunger extending into the supporting seat is smaller than the length of the second ball plunger extending into the supporting seat.

The quantity of the raised heads in the shifting fork 32 is set as required, as shown in fig. 1-13, the raised heads are arranged uniformly along the circumferential direction of the outer ring of the bidirectional overrunning clutch, two groups of ball head plungers are mounted and fixed on the supporting seat and have included angles equal to those of adjacent shifting forks of the bidirectional overrunning clutch, the ball head plungers can realize clockwise one-way driving or can realize counterclockwise one-way driving of basic core components only by adjusting the driving direction of a single clutch, and therefore the universality of the clutch assembly is improved.

Be provided with the fine motion detection switch 7 that detects the angle that cam 9 rotated on the supporting seat 17, fine motion detection switch 7 can detect whether the angle that cam 9 rotated target in place, when cam 9 began to rotate, the handle of fine motion detection switch 7 was pushed down and is rotated, after cam 9 rotated the angle of settlement, fine motion detection switch 7's handle rotated the trigger position of fine motion detection switch 10, fine motion detection switch 10's state changes and is detected by control system, after the external force of withdrawing cam 9, cam 9 resets under resetting means's effect reverse rotation, it is spacing finally by spacer pin 16, fine motion detection switch 7 resets simultaneously.

As shown in the attached drawings of the invention, the section of the cam 9 of the invention is of variable diameter, specifically, the diameter of the section of the contact part of the cam 9 and the micro-motion detection switch 7 under the action of external force is gradually increased, so that when the cam 9 rotates under the action of external force, the pressure on the handle of the micro-motion detection switch 7 is gradually increased, and after the cam 9 moves to the right position, the handle of the micro-motion detection switch 7 basically moves to the right position, and the motion position of the cam 9 is further limited; the maximum diameter of the tail end of the cam 9 with the gradually changed diameter is provided with a step surface contacted with the limit pin 16.

The bidirectional overrunning clutch further comprises a supporting bearing 5, wherein the supporting bearing 5 is arranged on the outer side of the outer ring 33 of the bidirectional overrunning clutch 3 along the axial direction of the connecting transmission shaft 13, the inner ring of the supporting bearing 5 is matched with the outer ring of the bidirectional overrunning clutch 3 through a shaft hole to realize assembly connection, and the outer ring of the supporting bearing 5 is axially constrained through an inner hole step on the supporting seat 17. The two sides of the outer side of the inner ring of the support bearing 5 are axially constrained by a boss of the outer ring of the bidirectional overrunning clutch 3 and a boss of the connecting flange 8 respectively.

As shown in fig. 1, the clutch assembly of the present invention further includes key I2, bolt assembly 6, key II12, retainer I13, retainer II14, and key III 15. The cam 9 is fixedly connected with the outer ring of the one-way clutch 11 through a key III15 and a retainer ring II14, unidirectional rotation limiting is generated through a limiting pin 16 fixed on a supporting seat 17, the inner ring of the one-way clutch 11 is fixedly connected with one end of a connecting flange 8 through a key II12 and a retainer ring I13, and the other end of the connecting flange 8 is fixedly connected with the outer ring 33 of the two-way overrunning clutch in the axial direction through shaft hole matching and a bolt assembly 6; the outer ring of the supporting bearing 5 is matched with the inner hole of the supporting seat 17 through a shaft hole to realize assembly connection, and meanwhile, the inner hole step of the supporting seat 17 generates axial restraint on the inner side of the outer ring of the supporting bearing 5 to enable the supporting bearing 5 to realize fixed installation. The inner ring 31 of the bidirectional overrunning clutch is connected with the transmission shaft 1 in an assembling mode through a key I2. The torsion spring limiting pin 19 is fixed on the supporting seat 17 and limits and restricts the initial angle of the cam 9.

As shown in figure 2, when the cam 9 as the driving shaft is static or has no moment under the action of the torsion spring 10 and the limit pin 16, because the included angle alpha of the ball plunger I4 and the ball plunger II18 which are installed on the supporting seat 17 around the circumference is equal to the included angle alpha of the adjacent raised head of the shifting fork 32 of the bidirectional overrunning clutch 3 and the adjacent raised head is enveloped between the ball plunger I4 and the ball plunger II18 during assembly, the moment transmitted to the outer ring 33 of the bidirectional overrunning clutch by the one-way clutch 11 is zero, the shifting fork 32 of the bidirectional overrunning clutch rotates along with the outer ring 33, and because the bidirectional overrunning clutch 3 has the function that the outer ring 33 is static and the inner ring 31 is free, the driving shaft 1 connected with the inner ring 31 of the bidirectional overrunning clutch through the fixed key I2 can rotate freely, and the device has a supporting function on the driving shaft 1.

When the cam 9 as the driving shaft overcomes the rotation angle alpha (can be designed randomly) of the torsion spring 10 in one direction, the cam 9 is fixedly connected with the outer ring of the one-way clutch 11 through a key and a retainer ring, the inner ring of the one-way clutch 11 is fixedly connected with the outer ring 33 of the two-way overrunning clutch 3 through a bolt component 6 by a connecting flange 8, because the one-way clutch 11 is driven in one direction, namely the outer ring of the one-way clutch 11 can drive the inner ring in one direction, and the two-way overrunning clutch 3 is driven by the driving inner ring of the outer ring, namely the outer ring of the two-way overrunning clutch 3 can drive the shifting fork 32 to rotate when rotating, when the shifting fork 32 only generates certain acting force with one of the ball plungers, the outer ring of the shifting fork drives the inner ring to rotate the angle alpha together, the outer ring 33 of the two-way overrunning, meanwhile, the cam 9 can trigger the micro-switch assembly 7 after the rotation angle alpha is in place, so that the in-place detection function of the swing angle alpha of the driving shaft cam 9 is realized. After the cam 9 as the driving shaft unloads the driving torque, because the one-way clutch 11 is in one-way driving and freely rotates reversely, the cam 9 reversely rotates by an angle alpha under the action of the reset torque of the torsion spring 10 and is restrained by the cam limit pin 16, the driving shaft cam 9 realizes automatic reset, and the inner ring of the two-way overrunning clutch and the transmission shaft connected with the inner ring through keys are kept static. And then the driving shaft cam and the driven shaft inner ring of the bidirectional overrunning clutch are driven by the one-way rotation angle n alpha for n times of repeated intermittent one-way driving, so that the driving shaft has the function of driving the driven shaft to rotate in one direction in a reciprocating swinging one-way intermittent mode.

The rotation direction of the cam 9 can be set to clockwise rotation or anticlockwise rotation, and under the two rotation modes, the device only needs to change the positions of the cam 9, the torsion spring 9 and the micro-motion detection switch 10 during installation. Namely, when the driving direction of the single clutch 11 and the matching size of the ball plunger relative to the supporting seat 17 are adjusted, the switching of the clockwise one-way or anticlockwise single-drive operation mode of the basic core component can be realized, and the universality is improved.

In the mounted relationship shown in fig. 3, the cam is capable of rotating clockwise under the influence of an external force and counterclockwise under the influence of the torsion spring 9. At the moment, the fit size of the ball plunger II18 relative to the support seat 17 is increased to enable the ball plunger II18 to have a resistance effect on the rotating shifting fork 32, meanwhile, the fit size of the ball plunger I4 relative to the support seat 17 is reduced to enable the ball plunger I4 to have a very small resistance effect on the rotating shifting fork 32, and the one-way clutch 11 is driven and installed clockwise, so that clockwise single driving of basic core components can be achieved, and clockwise one-way driving of a clutch assembly can be achieved. The cam can realize anticlockwise rotation under the action of external force according to the installation relation shown in fig. 4, clockwise rotation is realized under the action of the torsion spring 9, at the moment, the fit size of the ball plunger II18 relative to the supporting seat 17 is reduced, so that the ball plunger II18 has a very small resistance effect on the rotating shifting fork 32, meanwhile, the fit size of the ball plunger I4 relative to the supporting seat 17 is increased, so that the ball plunger II has a resistance effect on the rotating shifting fork 32, and the one-way clutch 11 is installed in an anticlockwise driving mode, so that the anticlockwise single driving of a basic core component can be realized.

Referring to fig. 6 to 14, a schematic diagram of the operation process of the clutch assembly in the connection relationship shown in fig. 3 is shown.

As shown in fig. 6, the cam 9 as the driving shaft maintains an initial state after assembly and is pressed against the stopper pin 16 and kept stationary by an initial torque of the torsion spring 10, wherein the

bosses

1 and 2 of the shift fork 32 are located between the ball plunger II18 and the ball plunger I4, and the boss 1 of the shift fork 32 is located near the lower side of the ball plunger II18 and the boss 2 of the shift fork 32 is located near the upper side of the ball plunger I4.

As shown in figure 7, a cam 9 overcomes the acting force of a torsion spring 10 to rotate clockwise by an angle alpha under the action of clockwise driving torque, meanwhile, a key III15 drives an outer ring of a one-way clutch 11 to rotate, an outer ring of the one-way clutch 11 drives an inner ring to rotate, a key II12, a connecting flange 8 and a bolt assembly 6 transmit driving torque to an outer ring 33 of a two-way overrunning clutch so as to drive a shifting fork 32 to rotate clockwise, a ball plunger II18 generates acting force on a raised head 1 of the shifting fork 32 so that the outer ring 31 of the two-way overrunning clutch can drive the inner ring 31 of the two-way overrunning clutch to rotate clockwise by an angle alpha, finally, the clockwise driving torque is transmitted to a transmission shaft 1 connected with the inner ring 31 of the two-way overrunning clutch through the key I2 and drives the transmission shaft 1 to rotate clockwise by an angle alpha to complete 1-time clockwise single-phase driving, and simultaneously, a raised head, the cam 9 is rotated clockwise to the right position to trigger the micro switch assembly 7 so as to complete the right position detection.

As shown in fig. 8, after the clockwise driving torque is unloaded, the cam 9 rotates counterclockwise for an angle α to reset under the action of the reset torque of the torsion spring 10, the raised

heads

2 and 3 of the shifting fork 32 are respectively constrained by the ball plunger II18 and the ball plunger I4, and meanwhile, the outer ring of the one-way clutch 11 has no driving torque, so that the inner ring 31 of the two-way overrunning clutch and the transmission shaft 1 are both kept in a static state, and the automatic reset of the cam 9 is completed.

As shown in the attached drawings 9-11, the cam 9 rotates clockwise by an angle alpha against the action force of the torsion spring 10 under the action of clockwise driving torque, simultaneously, the driving torque is transmitted to the outer ring 33 of the bidirectional overrunning clutch by the key III15, the outer ring of the one-way clutch 11, the inner ring of the one-way clutch 11, the key II12, the connecting flange 8 and the bolt assembly 6 in sequence, so as to drive the shifting fork 32 to rotate clockwise, meanwhile, the ball plunger II18 sequentially generates action force on the raised head 2, the raised head 3 and the raised head 4 of the shifting fork 32, so that the outer ring 33 of the bidirectional overrunning clutch can respectively and sequentially drive the inner ring 31 of the bidirectional overrunning clutch to rotate clockwise by an angle alpha, finally, the clockwise driving torque is respectively and sequentially transmitted to the transmission shaft 1 connected with the inner ring 31 of the bidirectional overrunning clutch through the key I2, and drive the transmission shaft 1 to respectively and sequentially rotate clockwise by an angle alpha, the cam, the clutch assembly completes 3 times of clockwise single-phase driving.

As shown in fig. 12-14, after clockwise driving moments are respectively unloaded sequentially, the cam 9 rotates counterclockwise by an angle α to reset sequentially under the action of the reset torque of the torsion spring 10, the raised head 3 and the raised head 4 of the shifting fork 32, the raised head 4 and the raised head 1, and the raised head 1 and the raised head 2 are respectively and sequentially constrained by the ball plunger II18 and the ball plunger I4, and meanwhile, the inner ring of the one-way clutch 11 has no driving moment, so that the inner ring 31 of the two-way overrunning clutch and the transmission shaft 1 are both kept in a static state, automatic reset of the cam 9 is sequentially completed, the clutch assembly returns to the initial state shown in fig. 4-a, and finally the clutch assembly drives the transmission shaft 1 to drive 1 for 1 clockwise driving turn. In the same way, the clutch assembly can drive the transmission shaft 1 to rotate anticlockwise for 1 circle. In conclusion, the driving shaft of the clutch assembly has the function of driving the driven shaft to rotate in one direction intermittently in one direction in a reciprocating swing manner and the function of detecting and detecting the swing angle of the driving shaft in place.

The invention also provides a sliding plug door transmission system which is a common shaft transmission system in the existing sliding plug door, namely the sliding plug door transmission system comprises a shaft arranged at the top of the sliding plug door, a door lock device connected with the sliding plug door is arranged on the shaft, the door lock device is connected with the sliding plug door, and when the shaft drives the door lock device to rotate, the door is driven to open and close by the door lock device. The shaft can be a screw rod, a gear, a belt wheel or other transmission, the end part of the shaft is connected with a driven shaft as a transmission shaft of the clutch assembly, so that the clutch assembly is used as a supporting seat and an emergency unlocking device, and the end part of the shaft is connected with the driven shaft as the transmission shaft of the clutch assembly.

In summary, the present invention can achieve the following functions, wherein the inner ring of the bidirectional overrunning clutch is a driven shaft, the cam 18 is a driving shaft:

(1) when the driving shaft is not in motion, the driven shaft can freely rotate in two directions;

(3) when the driving shaft drives the driven shaft to rotate by an angle alpha (which can be designed randomly) in a single direction, the driving shaft automatically resets under the action of the torsion spring and repeats in sequence, and meanwhile, the micro switch assembly can detect whether the rotation angle alpha of the cam is in place or not, so that the driving shaft has the function of driving the driven shaft to rotate in the single direction intermittently in a reciprocating swing manner and the function of detecting and detecting the swing angle of the driving shaft in place.

The one-way clutch and the 2 groups of ball head plungers in the basic core component of the device are standardized mature components, and the two-way overrunning clutch is an existing mature product, so that the device has the characteristics of simple structure, high reliability, good universality, low cost and the like.

The emergency unlocking device can be applied to the train door transmission system, the safety and the reliability can be improved, core basic parts of the emergency unlocking device are standard mature parts or existing mature products, and one-way clockwise and one-way anticlockwise driving can be realized, so that the emergency unlocking device has the advantages of being simple in structure, high in reliability, good in universality, low in cost and the like, the requirements of the emergency unlocking device of the train door transmission system can be completely met, and the emergency unlocking device has a very good effect on batch production engineering application.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the present invention should be covered by the present invention.

Claims

1. A clutch assembly, characterized by:

the bidirectional overrunning clutch comprises a cam (9) serving as a driving shaft and a supporting seat (17) with a hollow interior, wherein a transmission shaft (1) and an outer ring driving inner ring driven bidirectional overrunning clutch (3) are arranged at the hollow interior of the supporting seat (17), the transmission shaft (1) penetrates through the bidirectional overrunning clutch (3), and the transmission shaft (1) is fixedly connected with an inner ring (31) of the bidirectional overrunning clutch (3);

the cam (9) is arranged on one side of the supporting seat (17), the cam (9) is fixedly connected with the outer ring of the one-way clutch (11), the inner ring of the one-way clutch (11) is fixedly connected with the connecting flange (8), and the connecting flange (8) is fixedly connected with the outer ring of the two-way overrunning clutch (3);

the mechanical transmission device is characterized by further comprising a reset device, when the cam (9) rotates for a set angle under the action of external force, the transmission shaft (1) is driven to rotate for the set angle through the one-way clutch (11), the connecting flange (8) and the two-way overrunning clutch (3), and after the external force is removed, the cam (9) resets under the action of the reset device.

2. A clutch assembly as set forth in claim 1, wherein:

the supporting seat (17) is provided with a limiting pin (16) for limiting the unidirectional rotation of the cam (9), and after the external force applied to the cam (9) is removed, the cam (9) returns to the limiting pin (16) under the action of the reset device to be limited.

3. A clutch assembly as set forth in claim 1, wherein:

the reset device comprises a torsion spring (10), one end of the torsion spring (10) is embedded into the hole in the cam (9), and the other end of the torsion spring is limited through a torsion spring limiting pin arranged on the supporting seat (17).

4. A clutch assembly as set forth in claim 1, wherein:

the bidirectional overrunning clutch also comprises a shifting fork (32) which rotates along with an outer ring (33) of the bidirectional overrunning clutch (3), wherein at least two outward raised heads are arranged on the shifting fork (32), and an included angle between every two adjacent raised heads is a set angle rotated when the cam (9) rotates once;

two ball plungers (4, 18) are arranged on the supporting seat (17), and the included angle between the two ball plungers (4, 18) is the same as the included angle between two adjacent raised heads of the shifting fork (32);

when the cam (9) rotates for a set angle under the action of external force, the one-way clutch (11) drives the shifting fork (32) which rotates along with the outer ring (33) of the two-way overrunning clutch (3) to rotate for the set angle, and then two adjacent raised heads of the shifting fork (32) are enveloped between the two ball head plungers.

5. A clutch assembly as set forth in claim 4, wherein:

when the cam (9) is driven by external force to drive the shifting fork (32) to move, the length of one ball plunger extending into the supporting seat (17) is greater than or less than the length of the other ball plunger extending into the supporting seat (17) along the moving direction of the cam (9).

6. A clutch assembly as set forth in claim 1, wherein:

still including support bearing (5), support bearing (5) set up in outer lane (33) the outside of two-way freewheel clutch (3) along the axial of connecting transmission shaft (13), and support bearing (5) inner circle and two-way freewheel clutch (3) outer lane realize the assembly connection through the shaft hole cooperation, the outer lane of support bearing (5) carries out axial restraint through the hole step on supporting seat (17).

7. A clutch assembly as set forth in claim 1, wherein:

and the two sides of the outer side of the inner ring of the support bearing (5) are axially constrained by a boss of the outer ring of the bidirectional overrunning clutch (3) and a boss of the connecting flange (3) respectively.

8. A clutch assembly as set forth in claim 1, wherein:

the cam (9) is connected with the outer ring of the one-way clutch (11) through a key III (15), the connecting flange (8) is fixedly connected with the inner ring of the one-way clutch (11) through a key II (12), and the connecting flange (8) is fixedly connected with the outer ring (33) of the two-way overrunning clutch (3) through a bolt component.

9. A clutch assembly as set forth in claim 1, wherein:

and a micro-motion detection switch (7) for detecting the rotating angle of the cam (9) is arranged on the supporting seat (17).

10. Sliding plug door transmission system including the axle, epaxial setting door lock device, its characterized in that: a clutch assembly according to any one of claims 1 to 9 further including a shaft which terminates in the drive shaft of the clutch assembly.