Integrated torque limiter with pre-damping function
By adding pre-vibration springs and flexible disk hub designs to the torque limiter, the problems of cumbersome assembly and engine pulsation vibration are solved, and simpler assembly and better NVH performance are achieved.
Patent Information
- Application Number
- CN202421016144.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The split structure design of the mid-limit torque damper of existing hybrid vehicles and the flywheel leads to cumbersome assembly, and the pulsating torque of the engine leads to poor gear strike NVH effect.
Design an integrated torque limiter with pre-vibration. By adding a pre-vibration spring to the torque limiter, the flywheel and the flexible disc are integrated into one through rivets, fixed directly to the crankshaft, and are in the spline hub and the disc A pre-vibration spring is added between the hubs to absorb the torsional vibration of the engine.
The assembly process is simplified, the tedious process of traditional assembly is reduced, and the NVH performance of the vehicle is improved through pre-vibration springs, the vibration transmission during the engine is idling, and the stability of the vehicle is improved.
Smart Images
Figure CN222229296U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of torque limiters, in particular to an integrated torque limiter with pre-vibration reduction. Background Art
[0002] Torque limiters are mainly used in automobile powertrain systems. They are components installed between the engine and the gearbox to provide vibration reduction, noise reduction and overload protection for the automobile. In existing hybrid vehicles, the torque limiter and the flywheel are usually designed as a split structure. During installation, the flywheel must be bolted to the crankshaft of the generator first, and then the torque limiter must be bolted to the flywheel. The assembly is relatively complicated. At the same time, the hybrid box or range extender is prone to gear knocking or spline knocking sounds when the vehicle is idling. The main reason is that the pressure of the combustion gas in the engine and the periodic inertia force generated by the reciprocating motion of the piston cause the torque to change in a pulsating periodicity, which is transmitted to the hybrid box or range extender through the input shaft, causing the gear or spline clearance to knock, resulting in poor NVH effect at idle. Utility Model Content
[0003] In view of this, the purpose of the utility model is to provide an integrated torque limiter with pre-damping, in which the disc hub is changed from an integrated type to a split type, and a pre-damping spring is added in the middle. Through the damping spring, the torsional vibration fluctuation of the engine can be absorbed when the engine is idling, thereby improving the NVH performance of the whole vehicle.
[0004] The utility model provides an integrated torque limiter with pre-vibration reduction, which adopts the following technical solutions:
[0005] An integrated torque limiter with pre-vibration damper comprises a flywheel and a torque limiter damper body, the torque limiter damper body comprises a flexible disc, a vibration damping device and a pre-vibration damping device, the flexible disc is arranged on one side of the flywheel, the vibration damping device comprises a vibration damping disc, a disc hub and a vibration damping spring, the vibration damping disc and the disc hub are arranged on the flywheel, the vibration damping springs are evenly distributed on the vibration damping disc and the disc hub, the pre-vibration damping device comprises a spline hub and a plurality of pre-vibration damping springs arranged on the spline hub, the spline hub passes through the center of the disc hub and is detachably connected to the disc hub.
[0006] By adopting the above technical solution, when the range extender is running, the vibration of the engine is transmitted to the gasket through the crankshaft, and finally transmitted through the spline hub of the torque limiter assembly and matched with the input shaft of the hybrid box to transmit the torque to the whole vehicle. When the range extender is idling, the spline hub and the disc hub are clearance matched, and the unbalanced reciprocating motion of the engine can be attenuated by the pre-damping spring, so that the filtered smooth vibration is transmitted to the hybrid box or the generator input shaft. At the same time, the flywheel, the flexible disc, and the vibration reduction device are integrated into one by rivets, and the torque limiter can be directly fixed to the crankshaft, reducing the traditional tedious process of first installing the ordinary flywheel and then installing the torque limiter.
[0007] Furthermore, a plurality of protrusions are arranged on the side wall of the spline hub, and a plurality of grooves cooperating with the protrusions are arranged on the disc hub.
[0008] By adopting the above technical solution, when installing the spline hub, the protrusion on the spline hub is aligned and inserted into the groove on the disc hub, which makes installation more convenient and can also prevent the spline hub from rotating on the disc hub, thereby limiting the position of the spline hub.
[0009] Furthermore, a mounting groove for mounting a pre-damping spring is provided between the protrusions.
[0010] By adopting the above technical solution, the pre-damping spring is transversely fixed in the installation groove, and the two ends are fixed on two adjacent protrusions.
[0011] Furthermore, the disc hub is provided with an escape opening for evading the pre-damping spring.
[0012] By adopting the above technical solution, the setting of the avoidance opening can avoid the pre-damping spring when installing the spline hub.
[0013] Furthermore, the side wall of the spline hub is provided with two annular grooves on the plurality of protrusions, and the two grooves are respectively provided with a limit clamp ring and a limit retaining ring for fixing the two ends of the spline hub, and the pre-damping spring is arranged between the limit clamp ring and the limit retaining ring.
[0014] By adopting the above technical solution, the limit clamp ring and the limit retaining ring fix the two ends of the spline hub on the disc hub to limit the radial and axial movement of the spline hub.
[0015] Furthermore, a plurality of avoidance holes for installing the torque limiter and the crankshaft are arranged around the disc hub.
[0016] By adopting the above technical solution, the avoidance hole is used to avoid the torque limiter and the crankshaft installation position to avoid installation interference.
[0017] Furthermore, it also includes a friction plate, which is fixedly mounted on the vibration reduction device.
[0018] Furthermore, a force transmission ring is arranged on the friction plate, the force transmission ring is connected to the flywheel, and the damping plate is connected to the force transmission ring.
[0019] In summary, the present invention has at least one of the following beneficial effects:
[0020] 1. When the range extender is running, the vibration of the engine is transmitted to the gasket through the crankshaft, and finally transmitted through the spline hub of the torque limiter assembly and matched with the input shaft of the hybrid box to transmit the torque to the vehicle. When the range extender is idling, the spline hub and the disc hub are clearance matched, and the unbalanced reciprocating motion of the engine can be attenuated by the pre-reduction spring, so that the filtered stable vibration is transmitted to the hybrid box or the generator input shaft;
[0021] 2. The flywheel, the flexible disk and the vibration reduction device are integrated into one by rivets, and the torque limiter can be directly fixed to the crankshaft, reducing the traditional cumbersome process of first installing the ordinary flywheel and then installing the torque limiter. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0023] Figure 2 It is an explosion diagram of an embodiment of the utility model;
[0024] Figure 3 It is an exploded schematic diagram of the assembly of the pre-vibration damping device and the disc hub according to an embodiment of the utility model.
[0025] Description of reference numerals:
[0026] 1. Flywheel; 2. Flexible disk; 3. Vibration reduction device; 31. Vibration reduction disk; 32. Disk hub; 321. Groove; 322. Avoidance; 323. Avoidance hole; 33. Shock-absorbing spring; 4. Pre-vibration reduction device; 41. Spline hub; 411. Protrusion; 412. Mounting groove; 413. Clamping groove; 414. Limit clamping ring; 415. Limit retaining ring; 42. Pre-vibration reduction spring; 5. Friction plate; 6. Force transfer ring; 7. Gasket. DETAILED DESCRIPTION
[0027] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.
[0028] The following is combined with Figure 1-3 The utility model is described in further detail.
[0029] The utility model discloses an integrated torque limiter with pre-vibration reduction. Figure 1-Figure 3The integrated torque limiter with pre-vibration damper comprises a flywheel 1 and a torque limiter damper body, wherein the torque limiter damper body comprises a flexible disc 2, a vibration damping device 3 and a pre-vibration damping device 4, wherein the flexible disc 2 is arranged on one side of the flywheel 1 by rivets, wherein the vibration damping device 3 comprises a vibration damping disc 31, a disc hub 32 and a vibration damping spring 33, wherein the vibration damping disc 31 and the disc hub 32 are arranged on the flywheel 1, wherein the vibration damping spring 33 is evenly distributed on the vibration damping disc 31 and the disc hub 32, wherein the vibration damping disc 31 has four arc-shaped windows, wherein the disc hub 32 has four square bar holes corresponding to the arc-shaped windows, for installing the vibration damping spring 33, wherein the installation method of the vibration damping spring 33 is the prior art, which will not be described in detail herein, wherein the pre-vibration damping device 4 comprises a spline hub 41 and a plurality of pre-vibration damping springs 42 arranged on the spline hub 41 ... spring Three vibration springs 42 are provided and evenly distributed on the spline hub 41. The spline hub 41 passes through the center of the disc hub 32 and is detachably connected to the disc hub 32. When the range extender is running, the vibration of the engine is transmitted to the gasket 7 through the crankshaft, and after being transmitted all the way, it is finally transmitted through the spline hub 41 of the torque limiter assembly and cooperates with the input shaft of the hybrid box to transmit the torque to the whole vehicle. When the range extender is idling, the spline hub 41 and the disc hub 32 are clearance-matched, and the unbalanced reciprocating motion of the engine can be attenuated by the pre-damping spring 42, so that the filtered smooth vibration is transmitted to the hybrid box or the generator input shaft. At the same time, the flywheel 1, the flexible disc 2, and the vibration reduction device 3 are integrated by rivets, and the torque limiter can be directly fixed to the crankshaft, reducing the traditional cumbersome process of first installing an ordinary flywheel and then installing a torque limiter.
[0030] In this embodiment, a plurality of protrusions 411 are provided on the side wall of the spline hub 41, and a plurality of grooves 321 cooperating with the protrusions are provided on the disc hub 32. When installing the spline hub 41, the protrusions 411 on the spline hub 41 are aligned with the grooves 321 on the disc hub 32 and inserted. This makes installation more convenient and can also prevent the spline hub 41 from rotating on the disc hub 32, thereby limiting the position of the spline hub 41.
[0031] In this embodiment, a mounting groove 412 for mounting the pre-damping spring 42 is provided between the protrusions 411 , and the pre-damping spring 42 is transversely fixed in the mounting groove 412 , with both ends fixed on two adjacent protrusions 411 .
[0032] In this embodiment, the disc hub 32 is provided with an escape opening 322 for evading the pre-damping spring 42 . The setting of the escape opening 322 can avoid the pre-damping spring 42 when the spline hub 41 is installed.
[0033] In this embodiment, the side wall of the spline hub 32 is provided with two annular grooves 413 on the multiple protrusions 411, and the two grooves 413 are respectively provided with a limit collar 414 and a limit retaining ring 415 for fixing the two ends of the spline hub 41. The pre-damping spring 42 is arranged between the limit collar 414 and the limit retaining ring 415. The limit collar 414 and the limit retaining ring 415 fix the two ends of the spline hub 41 on the disk hub 32 to limit the radial and axial movement of the spline hub 41.
[0034] In this embodiment, a plurality of avoidance holes 323 for installing the torque limiter and the crankshaft are arranged around the disc hub 32 , and the avoidance holes 323 are used for avoiding the installation position of the torque limiter and the crankshaft to avoid installation interference.
[0035] In this embodiment, a friction plate 5 is further included, and the friction plate 5 is fixedly mounted on the vibration reduction device 3 by rivets.
[0036] In this embodiment, a force transmission ring 6 is provided on the friction plate 5, and the force transmission ring 6 is located between the friction plate 5 and the flexible plate 2. The force transmission ring 6 is fixed to the flywheel 1 through the flexible plate 2, and the damping plate 31 is connected to the force transmission ring 6 through double-headed rivets.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. An integrated torque limiter with pre-vibration damping, characterized in that: The invention comprises a flywheel (1) and a torque limiting shock absorber body, wherein the torque limiting shock absorber body comprises a flexible disc (2), a vibration reduction device (3) and a pre-vibration reduction device (4), wherein the flexible disc (2) is arranged on one side of the flywheel (1), the vibration reduction device (3) comprises a vibration reduction disc (31), a disc hub (32) and a vibration reduction spring (33), wherein the vibration reduction disc (31) and the disc hub (32) are arranged on the flywheel (1), the vibration reduction spring (33) is evenly distributed on the vibration reduction disc (31) and the disc hub (32), and the pre-vibration reduction device (4) comprises a spline hub (41) and a plurality of pre-vibration reduction springs (42) arranged on the spline hub (41), wherein the spline hub (41) passes through the center of the disc hub (32) and is detachably connected to the disc hub (32).
2. The integrated torque limiter with pre-damping according to claim 1, characterized in that: A plurality of protrusions (411) are arranged on the side wall of the spline hub (41), and a plurality of grooves (321) cooperating with the protrusions are arranged on the disc hub (32).
3. The integrated torque limiter with pre-damping according to claim 2, characterized in that: A mounting groove (412) for mounting a pre-damping spring (42) is provided between the protrusions (411).
4. The integrated torque limiter with pre-damping according to claim 3, characterized in that: The disc hub (32) is provided with an escape opening (322) for escaping the pre-damping spring (42).
5. The integrated torque limiter with pre-damping according to claim 3, characterized in that: The side wall of the spline hub (41) is provided with two annular clamping grooves (413) on the plurality of protrusions (411), and the two clamping grooves (413) are respectively provided with a limit clamping ring (414) and a limit retaining ring (415) for fixing the two ends of the spline hub (41), and the pre-damping spring (42) is arranged between the limit clamping ring (414) and the limit retaining ring (415).
6. The integrated torque limiter with pre-damping according to claim 1, characterized in that: A plurality of avoidance holes (323) for installing a torque limiter and a crankshaft are arranged on the hub (32) and around the hub (32).
7. The integrated torque limiter with pre-damping according to claim 1, characterized in that: It also comprises a friction plate (5), wherein the friction plate (5) is fixedly mounted on the vibration reduction device (3).
8. The integrated torque limiter with pre-damping according to claim 7, characterized in that: A force transmission ring (6) is arranged on the friction plate (5), the force transmission ring (6) is connected to the flywheel (1), and the vibration damping plate (31) is connected to the force transmission ring (6).