CN105526280B

CN105526280B - Two-way non-check freewheel clutch

Info

Publication number: CN105526280B
Application number: CN201610035697.5A
Authority: CN
Inventors: 聂松林; 肖述晗
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2016-01-19
Filing date: 2016-01-19
Publication date: 2017-12-29
Anticipated expiration: 2036-01-19
Also published as: CN105526280A

Abstract

The present invention relates to a kind of two-way non-check freewheel clutch, retainer component includes retainer outer ring, retainer inner ring, spring, nut.During drive end input power, while outer clutch race drives wedge rotation, promote roller to move down and be in contact with inside race, outer clutch race, roller is mutually agreed with inside race three, make clutch transmission torque.When drive end runs out of steam, roller moves toward the centre position of wedge, is disengaged with inside race.No matter inside race rotates clockwise or counterclockwise as driving wheel, and all without driving outer race to rotate together, i.e., clutch is in two-way disengaged condition.The device can be suitably used for the various operating modes of prime mover and power transmission shaft, have a wide range of application, and smooth engagement, reliable operation, noiseless, simple in construction, and the mechanical transfer efficiency and damping noise reduction for improving ship power are significant.

Description

Two-way non-check freewheel clutch

Technical field

The invention belongs to the transmission device of power set, and in particular to a kind of two-way non-check freewheel clutch.For sea The drive shaft system of all kinds of power plant of ships of army.Apply also for the drive shaft system of naval vessels combined power plants.

Background technology

In current China's naval vessels combined power transmission field, mainly realize power set with performing using clutch The combination and disengaging of device.But when two power are in different rotating speeds passing power, how to carry out two-way combination, two-way separation Etc. function, and the function being independent of each other both during the independent passing power of different power set.With clutch existing at present In, it is difficult to.Currently used clutch mainly has three kinds of structure types：Friction disk clutch, Wedge plate type are unidirectional Clutch, roller-type one way clutch.This three classes clutch can only unidirectional delivery moment of torsion, the work(of bi-directional can not be realized Energy.

In addition, though someone develops a kind of double rolling key clutch with fork type, because power is low, axle and clutch Inner ring can be linked with flat key, and small―gap suture between them be present, and two-way disengagement is realized using this small―gap suture.But work as power , it is necessary to use spline when larger, if now there is gap, can cause to exist therebetween enormous impact loses key fracture Effect.Therefore, in other all kinds of military equipments, the double rolling key clutch of high-power machinery formula does not just have at all, is substantially all It is to be replaced with tire clutch.But substantial amounts of heat can be produced during tire clutch friction, so as to result in making for tire Substantially reduced with the life-span, turn into one of most weak link of military equipment.

The content of the invention

In order to overcome, traditional freewheel clutch can only single-direction transmission and bidirectional clutch service life be short, safeguard not The technical barrier such as convenient, the present invention provide a kind of two-way non-check freewheel clutch, and the device being capable of bi-directional moment of torsion, two-way Disengage and retainer gap can be compensated automatically, suitable for various working conditions.The present invention realizes as follows：

A kind of two-way non-check freewheel clutch of the present invention, its structure is by lower cover, ball bearing, outer race, retainer Component, inside race, taper roll bearing, roller, wedge composition.

The wedge is fixed by screws on outer race.There are both sides to be symmetrically segmented off-centre operation on wedge curved Face, larger by paracentral curvature on curved surface, the curvature close to edge is smaller.These curved surfaces directly and roller-contact, i.e., can Ensure that clutch quickly agrees with, and can enough ensures that it does not interfere with retainer.

The retainer component includes retainer outer ring, retainer inner ring, spring, nut.Retainer outer ring and clutch Outer race is coupled by bearing.In retainer inner ring, two screwed small axles are stretched out between each two roller slot, small axle is worn Go out retainer outer ring, spring is cased with small axle, the size of spring force is adjusted by nut, make in retainer outer ring and retainer Circle mutually abuts.Moreover, there is the function of compensating automatically retainer outer ring, when roller rotates in retainer component, will can protect Hold frame inner ring and cause certain abrasion, roller space is become big, roller is rocked in retainer, so as to produce noise.But Due to the effect of spring force, retainer inner ring can be continued to be close to roller, can reduce space of the holding roller in retainer To initial size, the noise of the system of reduction, clutch is set more smoothly to run.

The inside race goes outer race to be linked together by two bearings, so ensure in outer race axiality compared with Height, phenomena such as eccentric wear will not occur, improve system service life.

The invention has the advantages that while smoothly realizing Bidirectional driving, during driven end Bidirectional driving, drive end is not And then it can together rotate, realize the operating mode of two-way non-check.And retainer has the function of compensating automatically, significantly increases The service life of clutch, improve the reliability of system.

By the present invention, the clutch substantially overcomes a variety of weak points of other types of freewheel clutch, is applicable In the various operating modes of prime mover and power transmission shaft, have a wide range of application.And it is smooth engagement, reliable operation, noiseless, simple in construction, The mechanical transfer efficiency and damping noise reduction for improving ship power are significant.

Brief description of the drawings

Fig. 1 is the axial section structure principle chart of the clutch of the present invention.

Fig. 2 is the radial junction composition and part section structure principle chart of the clutch of the present invention.

Fig. 3 is the amplification part section structure principle chart of the clutch of the present invention.

In figure：1st, lower cover, 2, screw a, 3, ball bearing a, 4, ball bearing b, 5, outer race, 6, retainer component, 61, spiral shell Mother, 62, spring, 63, retainer outer ring, 64, retainer inner ring, 7, ball bearing c, 8, inside race, 9, taper roll bearing, 10, Roller, 11, wedge, 12, screw b.

Embodiment

As Figure 1-3, the present invention is done below by embodiment into an explanation.

A kind of two-way non-check freewheel clutch, the lower cover 1 of the clutch are coupled with outer race 5 by screw a2.Wedge Shape block 11 is fixed on outer race 5 by screw b12.And outer race 5 is coupled with retainer outer ring 63 by ball bearing b4.Rolling Post 10 is arranged in the roller slot of retainer component 6, and stretching out two between each two roller slot of retainer inner ring 64 is threaded Small axle, small axle passed by the hole of retainer outer ring 63.Spring 62 is cased with small axle, and spring is adjusted by nut 61 The size of 62 power, so that retainer outer ring 63 and retainer inner ring 64 are close to each other.Inside race 8 by two ball bearing a3, Ball bearing b7 couples with outer race 5, and has taper roll bearing 9 to overcome axially and radially between inside race 8 and lower cover 1 Out-of-balance force.

The inner side of wedge 11 of two-way non-check freewheel clutch has both sides to be symmetrically segmented eccentric arc curved surface, on curved surface Larger by paracentral curvature, the curvature close to edge is smaller.It is i.e. larger with the local curvature that roller 10 directly contacts, not with rolling The local curvature that post 10 contacts is smaller, depending on the size of specific curvature is by angle of dallying.

The retainer component 6 of two-way non-check freewheel clutch has automatic compensation function.The each two of retainer inner ring 64 Two screwed small axles are stretched out between roller slot, small axle is passed by the hole of retainer outer ring 63.Spring is cased with small axle 62, and the size of the power of spring 62 is adjusted by nut 61, so that retainer outer ring 63 is mutually leaned on retainer inner ring 64 Closely.When the rotation in retainer component of roller 10, retainer inner ring 64 can be caused to certain abrasion, become roller slot space Greatly.But due to the effect of spring 62, retainer inner ring 64 can be continued to be close to roller, ensure roller slot space invariance, realized Automatic compensation.

The retainer inner ring 64 of two-way non-check freewheel clutch forms an annular by four pieces 90 degree of circular arc.

Agree with state：

Power is transferred to outer race 5 by input shaft by the spline of lower cover 1 through lower cover 1.When outer clutch race 5 is made When being rotated clockwise for driving wheel, due to the effect of inertia force, wedge 11 rotates clockwise with outer race 5, while promotes rolling Post 10 is moved down and is in contact with inside race 8.So that outer clutch race 5, roller 10 mutually agree with the three of inside race 8, Now clutch transmits moment of torsion clockwise；Similarly, when outer clutch race 5 rotates counterclockwise as driving wheel, driving torque Mode with clockwise it is identical.

Disengaged condition：

If in when agreeing with state, the rotating speed of outer race 5 reduces clutch, under the collective effect of inertia force and spring 62, Roller 10 moves toward the centre position of wedge 11, is disengaged with inside race 8.If clutch is in non-when agreeing with state, roller 10 The centre of wedge 11 is under the action of the spring 62, is disengaged with inside race 8.So, no matter suitable inside race 8 is as driving wheel Hour hands still rotate counterclockwise, and all without driving outer race 5 to rotate together, i.e., clutch is in two-way disengaged condition.

Claims

1. two-way non-check freewheel clutch, it is characterised in that：The lower cover (1) of the clutch passes through screw a with outer race (5) (2) couple；Wedge (11) is fixed on outer race (5) by screw b (12)；And outer race (5) and retainer outer ring (63) coupled by ball bearing b (4)；Roller (10) is arranged in the roller slot of retainer component (6), and retainer inner ring (64) is every Two screwed small axles are stretched out between two roller slots, small axle is passed by the hole of retainer outer ring (63)；Covered on small axle There is spring (62), and the size of spring (62) power is adjusted by nut (61), so that retainer outer ring (63) are with keeping Frame inner ring (64) is close to each other；Inside race (8) is coupled by two ball bearing a (3), ball bearing b (7) with outer race (5), and There is taper roll bearing (9) to overcome axially and radially out-of-balance force between inside race (8) and lower cover (1)；

Its inner side of the wedge (11) of two-way non-check freewheel clutch has both sides to be symmetrically segmented eccentric arc curved surface, on curved surface Larger by paracentral curvature, the curvature close to edge is smaller；The local curvature directly contacted with roller (10) is larger, not with The local curvature of roller (10) contact is smaller；Depending on the size of specific curvature is by angle of dallying.

2. two-way non-check freewheel clutch as claimed in claim 1, it is characterised in that：Two-way non-check freewheel clutch Retainer component (6) has automatic compensation function, can be by retainer inner ring when roller (10) rotation in retainer component (64) cause to wear, roller slot space is become big；But due to the effect of spring (62), retainer inner ring (64) can be continued tight Roller is pasted, ensures roller slot space invariance, realizes automatic compensation.

3. two-way non-check freewheel clutch as claimed in claim 1, it is characterised in that：Retainer inner ring (64) is by four piece 90 The circular arc of degree forms an annular.

4. two-way non-check freewheel clutch as claimed in claim 1, it is characterised in that：Input shaft passes through lower cover (1) Power is transferred to outer race (5) by spline through lower cover (1)；When outer clutch race (5) rotates clockwise as driving wheel, Due to the effect of inertia force, wedge (11) rotates clockwise with outer race (5), at the same promote roller (10) move down and with Inside race (8) is in contact；So that outer clutch race (5), roller (10) mutually agree with inside race (8) three, now clutch Device transmits moment of torsion clockwise；Similarly, when outer clutch race (5) rotates counterclockwise as driving wheel, the mode of driving torque With clockwise it is identical.

5. two-way non-check freewheel clutch as claimed in claim 1, it is characterised in that：If clutch, which is in, agrees with state When, outer race (5) rotating speed reduces, and under the collective effect of inertia force and spring (62), roller (10) is toward in wedge (11) Between position move, with inside race (8) disengage；If clutch is in non-when agreeing with state, effect of the roller (10) in spring (62) The centre of wedge (11) is in down, is disengaged with inside race (8)；Inside race (8) as driving wheel no matter clockwise or the inverse time Pin rotates, and all without driving outer race (5) to rotate together, i.e., clutch is in two-way disengaged condition.