CN211550399U

CN211550399U - Torsion damper with torsion limiting function

Info

Publication number: CN211550399U
Application number: CN202020107094.3U
Authority: CN
Inventors: 王祺; 魏军; 许青; 唐师法
Original assignee: Wuxi Mingheng Hybrid Power Technology Co ltd
Current assignee: Wuxi Mingheng Hybrid Power Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-09-22
Anticipated expiration: 2030-01-17

Abstract

The utility model provides a twist reverse vibration damping ware with limit is turned round function, it is by fixed mounting on engine flywheel, and it includes moment of torsion restriction module and moment of torsion damping module, moment of torsion restriction module with moment of torsion damping module fixed connection together to make the engine moment of torsion warp moment of torsion restriction module transmits for moment of torsion damping module. The utility model provides a torsional damper with limit torsion function has improved the driven reliability between engine and the motor among the hybrid power system, and this kind of shock absorber has increased the moment of torsion restriction module on traditional torsional damper's basis, and when the moment of torsion transships, the moment of torsion restriction module takes place to skid and consequently breaks off the moment of torsion transmission, and after the overload was eliminated, the moment of torsion restriction module automatic re-setting resumes the moment of torsion transmission; the special hybrid power torsional damper with the torque limiting function can filter large torque impact, and is light in weight, small in rotational inertia, small in installation space, reliable in structure and low in cost.

Description

Torsion damper with torsion limiting function

Technical Field

The utility model relates to an automobile thoughtlessly moves driving system, especially relates to a torsional damper with limit turns round function.

Background

The existing automobile hybrid power system is provided with at least two power sources, and in the process of switching, coupling and decoupling different power sources, large torque impact is easily generated in the hybrid power system, if a traditional torsional damper is used in the hybrid power system, the phenomenon that the torsional damper limiting device is directly impacted due to overload of transmitted torque often occurs, and then the torsional damper fails. The existing hybrid system uses the dual-mass flywheel to replace a torsional damper, and utilizes the larger torsional angle of the dual-mass flywheel to absorb instantaneous impact, but the scheme can bear limited torque impact, and has large installation requirement space and higher use cost. There is also a scheme of adding a set of clutch between the engine and the motor, and the instantaneous torque impact is filtered out by controlling the sliding friction of the clutch, but the scheme is not easy to arrange, and the complexity of hardware structure and software control is greatly increased.

Disclosure of Invention

In view of the above, in order to improve the reliability of transmission between an engine and a motor in a hybrid power system, the present invention provides a torsional vibration damper with torque limiting function, which is fixedly mounted on a flywheel of the engine, and comprises a torque limiting module and a torque damping module, wherein the torque limiting module and the torque damping module are fixedly connected together, so that the torque of the engine is transmitted to the torque damping module through the torque limiting module; the torque limiting module comprises an external connecting flange plate, balls, a ball retainer, a disc spring, a locking nut plate and an internal connecting flange plate, wherein the external connecting flange plate, the balls, the ball retainer and the disc spring are arranged on the periphery of the internal connecting flange plate, the end face of the external connecting flange plate is provided with a preset number of ball grooves matched with the balls, the balls are embedded into the ball grooves of the external connecting flange plate, the other side of the balls is sequentially provided with the ball retainer, the disc spring and the locking nut plate, and the locking nut plate is fixedly connected with the internal connecting flange plate through a threaded connection mode.

Furthermore, the end face of the external connecting flange plate is provided with a preset number of ball grooves matched with the balls, and after the balls are embedded into the ball grooves of the external connecting flange plate, the balls are matched with the ball grooves to generate tangential component force when the balls are subjected to axial force generated by the disc spring, so that torque transmission among the external connecting flange plate, the balls and the ball retainer is realized.

Further, when the tangential force generated by the disc spring on the ball is larger than the tangential force generated by the input torque overload on the ball, the ball is separated from the ball groove on the end surface of the external connecting flange, so that the external connecting flange and the ball retainer slip to interrupt torque transmission.

Further, after the torque overload is eliminated, the ball rotates by an angle in the rotation process of the ball retainer and enters the next ball groove to automatically reset, at the moment, the tangential force generated by the disc spring on the ball is larger than that generated by the input torque on the ball, and the torque limiting module returns to the function of transmitting the torque.

Furthermore, the inner ring of the ball retainer is provided with a preset number of convex splines, the outer ring of the inner connecting flange plate is provided with spline grooves matched with the splines of the ball retainer, and after the splines of the ball retainer are embedded into the spline grooves of the inner connecting flange plate, torque transmission can be achieved.

Furthermore, the spline of the ball retainer is a rectangular spline, and the spline groove of the inner connecting flange plate is a rectangular spline groove.

Furthermore, the external connecting flange plate is provided with a preset number of screw holes and pin holes, screws are inserted into the screw holes of the external connecting flange plate and screwed into the engine flywheel, and pins are inserted into the pin holes of the external connecting flange plate and are inserted into the engine flywheel, so that the torsion damper with the torsion limiting function is fixedly installed on the engine flywheel.

Further, the locking nut plate is in threaded connection with the inner connecting flange plate, and the locking nut plate is used for adjusting the gap between the ball retainer and the locking nut plate.

Further, the disc spring is installed between the locking nut plate and the ball retainer, and the pre-tightening force between the disc springs can be adjusted by adjusting the gap between the ball retainer and the locking nut plate, so that the limit value of the overload torque is set.

Further, the torsion vibration damping module comprises a connecting disc, a lower clamping disc, an upper clamping disc, a main vibration damping spring, a damping disc, a spline hub, a pre-vibration damping spring and a positioning pin, wherein the connecting disc is fixedly connected with an inner connecting flange disc of the torsion limiting module through a rivet, the lower clamping disc is arranged on the right side of the connecting disc and clamped with the connecting disc under the pretightening force, the main vibration damping spring is positioned at the inner lower parts of the lower clamping disc and the upper clamping disc, and the main vibration damping spring is clamped by the lower clamping disc and the upper clamping disc; the damping disc is located the interior below of main damping spring to with main damping spring contact, when the moment of torsion that comes from the moment of torsion restriction module is transferred to when the moment of torsion damping module, under the effect of torque force, main damping spring compresses, filters torsional vibration wherein with the cooperation of the damping disc of telling.

The utility model provides a torsional damper with function is turned round to limit has improved driven reliability between engine and the motor among the hybrid power system, and this kind of shock absorber has increased the moment of torsion restriction module on traditional torsional damper's basis, and when the moment of torsion transships, thereby the moment of torsion restriction module takes place to skid and breaks off the moment of torsion transmission, and after overload elimination, moment of torsion restriction module automatic re-setting resumes the moment of torsion transmission. The special hybrid power torsional damper with the torque limiting function can filter large torque impact, and is light in weight, small in rotational inertia, small in installation space, reliable in structure and low in cost.

Drawings

Fig. 1 is an assembly view of a torsional vibration damper with torque limiting function on an engine flywheel according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a torsional vibration damper with torque limiting function according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a torque limiter module of the torsional vibration damper of FIG. 2 having a torque limiting function;

FIG. 4 is a perspective view of the ball cage of the torque limiting module of FIG. 3;

fig. 5 is a perspective view of an inner connecting flange of the torque limiting module shown in fig. 3.

Detailed Description

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It is to be understood that the described embodiments are merely some embodiments and not all embodiments of the present application, and that the following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application and its applications.

In the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or all manner of connections; "coupled" may be direct or indirect through an intermediary. The terms "upper", "lower", and the like indicate orientations or positional relationships based on the manner or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific orientation, be constructed and operated in a specific orientation. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-5, the present invention provides a torsional vibration damper 000 with torque limiting function, which is fixedly installed on the engine flywheel 5, so as to drive the torsional vibration damper 000 to move synchronously.

The torsional vibration damper 000 with a torque limiting function includes a torque limiting module 1 and a torque damping module 2, and the torque limiting module 1 and the torque damping module 2 are fixedly connected together, so that engine torque is transmitted to the torque damping module 2 through the torque limiting module 1.

The torque limiting module 1 comprises an external connecting flange plate 1-1, balls 1-2, a ball retainer 1-3, disc springs 1-4, a locking nut plate 1-5 and an internal connecting flange plate 1-6, wherein the external connecting flange plate 1-1, the balls 1-2, the ball retainer 1-3 and the disc springs 1-4 are arranged on the periphery of the internal connecting flange plate 1-6 according to the upper, lower, left and right directions in the attached drawing 2, a preset number of ball grooves matched with the balls 1-2 are arranged on the end surface of the external connecting flange plate 1-1, and after the balls 1-2 are embedded into the ball grooves of the external connecting flange plate 1-1, the other surface of the balls 1-2 is sequentially provided with the ball retainers 1-3 and the ball retainers 1-4, The disc springs 1-4 and the locking nut discs 1-5, wherein the locking nut discs 1-5 and the inner connecting flange discs 1-6 are fixedly connected together in a threaded connection mode.

The inner ring of the ball retainer 1-3 is provided with a preset number of convex splines 1-3-2, the outer ring of the inner connecting flange plate 1-6 is provided with spline grooves 1-6-1 matched with the splines 1-3-2 of the ball retainer 1-3, and after the splines 1-3-2 of the ball retainer 1-3 are embedded into the spline grooves 1-6-1 of the inner connecting flange plate 1-6, torque transmission can be realized. Preferably, the spline 1-3-2 of the ball retainer 1-3 is a rectangular spline, and the spline groove 1-6-1 of the inner connecting flange plate 1-6 is a rectangular spline groove.

The external connection flange plate 1-1 is provided with a preset number of screw holes 1-1-1 and pin holes 1-1-2, a screw 6 is inserted into the screw hole 1-1-1 of the external connection flange plate 1-1 and is screwed into the engine flywheel 5, and a pin 4 is inserted into the pin hole 1-1-2 of the external connection flange plate 1-1 and is inserted into the engine flywheel 5, so that the torsion damper 000 with the torque limiting function is fixedly mounted on the engine flywheel 5.

The locking nut discs 1-5 are in threaded connection with the inner connecting flange discs 1-6, and the locking nut discs 1-5 are used for adjusting gaps between the ball retainer 1-3 and the locking nut discs 1-5.

The disc springs 1-4 are arranged between the locking nut discs 1-5 and the ball retainers 1-3, and the pretightening force between the disc springs 1-4 can be adjusted by adjusting the gaps between the ball retainers 1-3 and the locking nut discs 1-5. The ball 1-2 is subjected to axial force generated by the disc spring 1-4, and is matched with a ball groove on the end surface of the external connecting flange plate 1-1 to generate tangential component force, so that torque transmission among the external connecting flange plate 1-1, the ball 1-2 and the ball retainer 1-3 is realized. The maximum torque which can be transmitted by the torque limiting module 1 can be set by setting the pretightening force of the disc springs 1-4.

When the torque of the input end is overloaded and exceeds a set value, the tangential force generated by the input torque on the ball 1-2 is larger than the tangential force generated by the disc spring 1-4 on the ball 1-2, and the ball 1-2 is separated from the ball groove on the end surface of the external connecting flange plate 1-1, so that the external connecting flange plate 1-1 and the ball retainer 1-3 slip to interrupt the torque transmission.

When the torque overload is eliminated, the ball 1-2 rotates by an angle in the rotation process of the ball retainer 1-3 and enters the next ball groove to automatically reset, at the moment, the tangential force generated by the disc spring 1-4 on the ball 1-2 is larger than the tangential force generated by the input torque on the ball 1-2, and the torque limiting module 1 recovers the function of transmitting the torque.

The torsion vibration damping module 2 comprises a connecting disc 2-1, a lower clamping disc 2-2, an upper clamping disc 2-3, a main vibration damping spring 2-4, a damping disc 2-5, a spline hub 2-6, a pre-vibration damping spring 2-7 and a positioning pin 2-8, the connecting plate 2-1 is fixedly connected with the inner connecting flange 1-6 of the torque limiting module 1 through a rivet 3, according to the orientation from left to right and from inside to outside in the attached figure 2, the lower clamping disk 2-2 is arranged at the right side of the connecting disk 2-1 and clamped together with the connecting disk 2-2 with pretightening force, the main vibration reduction spring 2-4 is positioned at the inner lower part of the lower clamping disk 2-2 and the upper clamping disk 2-3, and the main damping spring 2-4 is clamped by the lower clamping disk 2-2 and the upper clamping disk 2-3; the damping disk 2-5 is located inwardly and downwardly of the main damping spring 2-4 and is in contact with the main damping spring 2-4, and when the torque from the torque limiting module 1 is transmitted to the torque damping module 2, the main damping spring 2-4 moves inwardly and downwardly under the action of the torque force, and the damping disk 2-5 and the pre-damping spring 2-7 are used to cancel out the torque force.

When the engine torque is transmitted to the torque damping module 2 through the torque limiting module 1, the torsional vibration is reduced and weakened through the pre-damping springs 2-7 and the main damping springs 2-4, and finally the engine torque is output to the rear-end hybrid power gearbox through the spline hubs 2-6.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A torsion damper with a torsion limiting function is fixedly arranged on an engine flywheel and comprises a torque limiting module and a torque damping module, wherein the torque limiting module and the torque damping module are fixedly connected together, so that engine torque is transmitted to the torque damping module through the torque limiting module; the torque limiting module comprises an external connecting flange plate, balls, a ball retainer, a disc spring, a locking nut plate and an internal connecting flange plate, wherein the external connecting flange plate, the balls, the ball retainer and the disc spring are arranged on the periphery of the internal connecting flange plate, the end face of the external connecting flange plate is provided with a preset number of ball grooves matched with the balls, the balls are embedded into the ball grooves of the external connecting flange plate, the other side of the balls is sequentially provided with the ball retainer, the disc spring and the locking nut plate, and the locking nut plate is fixedly connected with the internal connecting flange plate through a threaded connection mode.

2. The torsional vibration damper with the torque limiting function as claimed in claim 1, wherein a predetermined number of ball grooves are formed in the end surface of the external connection flange, the ball grooves are adapted to the balls, and when the balls are inserted into the ball grooves of the external connection flange, the balls and the ball grooves cooperate to generate a tangential component force when subjected to an axial force generated by the disc spring, thereby achieving torque transmission among the external connection flange, the balls and the ball cage.

3. The torsional damper with a torque limiting function according to claim 1, wherein when an input torque overload generates a tangential force on the balls that is greater than a tangential force generated on the balls by the disc springs, the balls are disengaged from the ball grooves on the end surface of the outer connecting flange, so that the outer connecting flange and the ball cage slip to interrupt torque transmission.

4. The torsional damper with torque limiting function according to claim 1, wherein when the torque overload is removed, the ball is automatically reset when the ball rotates an angle during the rotation of the ball cage and enters the next ball groove, and when the tangential force generated by the disc spring on the ball is larger than that generated by the input torque, the torque limiting module returns to the function of transmitting the torque.

5. The torsional damper with the torque limiting function according to claim 1, wherein the inner ring of the ball cage is provided with a predetermined number of protruding splines, and the outer ring of the inner connecting flange is provided with spline grooves adapted to the splines of the ball cage, so that the torque transmission between the ball cage and the inner connecting flange is realized when the splines of the ball cage are fitted into the spline grooves of the inner connecting flange.

6. The torsional damper with a torque limiting function according to claim 5, wherein the spline of the ball cage is a rectangular spline, and the spline groove of the inner connecting flange is a rectangular spline groove.

7. The torsion damper with the torque limiting function according to claim 5, wherein the external connection flange has a predetermined number of screw holes and pin holes, screws are inserted into the screw holes of the external connection flange and screwed into the engine flywheel, and pins are inserted into the pin holes of the external connection flange and are inserted into the engine flywheel, so that the torsion damper with the torque limiting function is fixedly mounted on the engine flywheel.

8. The torsional damper with a torque limitation function according to claim 1, wherein the locking nut plate is screwed to the inner connecting flange plate, and the locking nut plate is used to adjust a gap between the ball cage and the locking nut plate.

9. The torsional damper with the torque limiting function according to claim 1, wherein the disc spring is installed between the locking nut plate and the ball cage, and a limit value of the overload torque is set by adjusting a gap between the ball cage and the locking nut plate to adjust a pretightening force between the disc springs.

10. The torsion damper with a torque limiting function according to any one of claims 1 to 9, wherein the torsion damping module comprises a connection plate, a lower clamping plate, an upper clamping plate, a main damping spring, a damping plate, a spline hub, a pre-damping spring and a positioning pin, the connection plate is fixedly connected with an inner connection flange plate of the torque limiting module by a rivet, the lower clamping plate is arranged at the right side of the connection plate and clamped with the connection plate with pretightening force, the main damping spring is arranged at the inner lower part of the lower clamping plate and the upper clamping plate, and the main damping spring is clamped by the lower clamping plate and the upper clamping plate; the damping disk is located at the inner lower part of the main damping spring and is in contact with the main damping spring, and when the torque from the torque limiting module is transmitted to the torque damping module, the main damping spring is compressed under the action of the torque force and is matched with the damping disk to filter out the torsional vibration in the main damping spring.