CN215596299U

CN215596299U - Electromechanical coupling buffer torque-limiting mechanism of range extender for vehicle

Info

Publication number: CN215596299U
Application number: CN202120950894.6U
Authority: CN
Inventors: 钟成; 雷正雨; 罗建亮; 钟承鲲
Original assignee: LIUZHOU WULING LIUJI POWER CO Ltd
Current assignee: LIUZHOU WULING LIUJI POWER CO Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-01-21
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses an electromechanical coupling buffer torque-limiting mechanism of a range extender for a vehicle, which comprises a torque-limiting shock absorber and a flywheel, wherein the flywheel is fixedly connected with the end part of an engine crankshaft through a bolt, the outer edge of the flywheel is fixedly connected with the outer edge of the torque-limiting shock absorber, the torque-limiting shock absorber is connected with an external spline shaft of a generator through an internal spline disc in the middle of the torque-limiting shock absorber, and the torque-limiting shock absorber comprises two shock absorber mounting discs, a damping disc I, a damping disc II, an integral waveform sheet and a friction sheet which are arranged between the two shock absorber mounting discs. The utility model can reduce torque impact, improve the reliability and quality of products, provide overload protection, and has strong universality and wide application range.

Description

Electromechanical coupling buffer torque-limiting mechanism of range extender for vehicle

Technical Field

The utility model relates to the technical field of engines, in particular to an electromechanical coupling buffer torque-limiting mechanism of a range extender for a vehicle.

Background

The existing vehicle range extender engine is connected with an ISG generator by adopting a non-buffer structure, as shown in figure 1, an internal spline adapter plate 3 is connected with an engine crankshaft 1 through a fastening bolt 2, and an external spline shaft 4 of the generator penetrates into the internal spline adapter plate 3 to realize torque transmission. The generator of the range extender for the vehicle is coupled with the engine without a buffer mechanism, so that the range extender has impact on torque change between the engine and the generator in a starting process and a variable working condition power generation process of the range extender, larger vibration is generated, the NVH performance of the whole vehicle is influenced, and the driving and riding comfort of a user is reduced. Meanwhile, as the coupling mechanism is not provided with a buffer mechanism, the fastening bolts of the crankshaft system, the bearing bush, the generator spline shaft and the internal spline adapter plate of the engine are impacted by load in the starting process and the variable working condition power generation process of the range extender, so that the reliability of the fastening bolts of the crankshaft system, the bearing bush, the generator spline shaft and the internal spline adapter plate is influenced, abnormal abrasion of the crankshaft journal and the bearing bush can be caused in severe cases, and the motor spline shaft and the fastening bolts are broken.

Disclosure of Invention

The utility model aims to provide an electromechanical coupling buffer torque-limiting mechanism of a range extender for a vehicle, aiming at overcoming the defects of large torque change impact, low reliability and low quality in the prior art.

The technical scheme adopted by the utility model for realizing the purpose is as follows: a vehicle range extender electromechanical coupling buffering torque-limiting mechanism comprises a torque-limiting damper and a flywheel, wherein the flywheel is fixedly connected with the end part of an engine crankshaft through a bolt, the outer edge of the flywheel is fixedly connected with the outer edge of the torque-limiting damper, the torque-limiting damper is connected with an external spline shaft of a generator through an internal spline disc in the middle of the torque-limiting damper, the torque-limiting damper comprises two damper installation discs, a damping disc I, a damping disc II, an integral wave-shaped sheet and a friction sheet, the damping installation discs are disc-shaped structures, through holes are formed in the inner sides of the damping installation discs, the concave parts of the two damping installation discs are in butt joint with each other and then are fixedly connected with the flywheel, the internal spline discs are arranged in the middle of the through holes of the two damper installation discs, the overall profiles of the damping disc I and the damping disc II are circular, through holes are formed in the middle parts of the damping disc I and the damping disc II respectively, and the damping disc is sleeved outside the internal spline disc, the damping disc I and the damping disc II are respectively sleeved outside the internally splined disc, the damping disc I and the damping disc II are respectively and oppositely arranged at two sides of the damping disc, the periphery of a through hole in the middle of the damping disc is provided with spring mounting holes in an annular matrix manner, the damping disc I, damping disc II is equipped with the spring spacing groove respectively in the spring mounting hole relative position with the damping disc, buffer spring installs in the spring mounting hole of damping disc and by damping disc I, the spacing groove of damping disc II is spacing, whole wave form piece is opened the ring board that has the through-hole for the middle part, whole wave form piece leans on inboard circumference surface to lean on outside circumference surface to be connected through rivet and damping disc I, whole wave form piece leans on the both sides surface of outside circumference fixedly connected with friction disc respectively, the friction disc that whole wave form piece outside and both sides surface are connected all sets up in the accommodation space that two damping mounting disc depressed part docks and form.

The further technical scheme of the utility model is as follows: the shock absorption mounting discs comprise flat butt joint parts and concave parts formed by outwards bending the inner edges of the butt joint parts, the butt joint parts of the two shock absorption mounting discs are fixedly connected with the flywheel through bolts after the concave parts of the two shock absorption mounting discs are mutually butted, and the concave parts of the two shock absorption mounting discs are butted to form an accommodating space.

The further technical scheme of the utility model is as follows: the torsion limiting shock absorber further comprises a pressing gasket and a butterfly-shaped elastic sheet, the pressing gasket and the butterfly-shaped elastic sheet are respectively arranged in the accommodating space, the pressing gasket abuts against the surface of one side, away from the integral corrugated sheet, of one friction sheet, and the butterfly-shaped elastic sheet is arranged between the pressing gasket and the inner side surface of the shock absorption installation disc.

The further technical scheme of the utility model is as follows: the torsion-limiting shock absorber further comprises a disc center damping sheet, a through hole is formed in the middle of the disc center damping sheet, a buckle extending inwards is arranged at the inner edge of the through hole, the disc center damping sheet is sleeved at the end part of one end of the inner spline disc, and a clamping groove matched with the buckle is formed in the periphery of one end of the inner spline disc.

The further technical scheme of the utility model is as follows: be equipped with the keyway that the position corresponds each other on damping disk I, the damping disk II, be connected with between the keyway that the position corresponds each other and be connected the connection key that can link damping disk I, damping disk II as an organic whole.

The further technical scheme of the utility model is as follows: the friction plate is in a circular ring shape and comprises a circular ring-shaped main body and friction blocks which are uniformly distributed and connected to the surface of the circular ring-shaped main body.

The electromechanical coupling buffer torque-limiting mechanism of the range extender for the vehicle has the following beneficial effects:

1. can reduce torque impact

The torque-limiting shock absorber comprises a torque-limiting shock absorber and a flywheel, wherein the torque-limiting shock absorber comprises two shock absorber mounting discs, a damping disc I, a damping disc II, an integral corrugated sheet and a friction sheet which are arranged between the two shock absorber mounting discs, and torque impact in the working process can be effectively reduced through an internal spline disc, the damping disc, a buffer spring, the damping disc I, the damping disc II, the integral corrugated sheet, the friction sheet and the shock absorber mounting discs of the torque-limiting shock absorber between an engine and a generator.

2. Improve the reliability and quality of the product

Because the torque-limiting shock absorber is added through electromechanical coupling between the range extender assembly engine and the generator, the problem of system failure caused by abnormal impact of a range extender engine shafting, bolts and a generator spline shaft under the conditions of starting, variable working condition power generation, system torque overload and the like of the range extender is effectively solved, and the reliability and the quality of products are improved.

3. Providing overload protection

The friction plates are two circular ring plates, the two friction plates are respectively and fixedly arranged at the outer edges of two surfaces of the integral wave-shaped plate, the shock absorber mounting plate is connected with the friction plates, the friction plates form a compaction friction torque in the working process of the system, the friction torque transmission of the system and the limitation of the limit transmission torque can be realized, and when the system is overloaded, the torque-limiting shock absorber realizes idling through the slipping of the friction plates so as to play a function of overload protection.

4. High versatility

The torque-limiting shock absorber can be connected with a casting flywheel or a stamping piece flexible disk, so that the torque-limiting shock absorber is high in universality.

5. Wide application range

The torque-limiting shock-absorbing device can meet the requirements of torque-limiting shock-absorbing function by adjusting the load of the buffer spring of the torque shock absorber and the friction torque of the friction plate, so that the torque-limiting shock-absorbing device is suitable for range extenders with different powers and torques, and has wide application range.

The electromechanical coupling buffer torque-limiting mechanism of the range extender for a vehicle is further described with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic illustration of a prior art engine coupled to a generator;

FIG. 2 is a schematic diagram of an electromechanical coupling buffer torque-limiting mechanism for a vehicle range extender connecting an engine and a generator according to the present invention;

FIG. 3 is a sectional view of the connection between the torque-limiting damper and the external spline shaft of the generator and the flywheel of the electromechanical coupling buffer torque-limiting mechanism of the range extender for vehicles according to the present invention;

FIG. 4 is a perspective view of a torque-limiting damper of an electromechanical coupling buffer torque-limiting mechanism of a vehicular range extender of the present invention;

FIG. 5 is a perspective view of a damping disc of an electromechanical coupling buffer torque-limiting mechanism of a vehicular range extender of the present invention;

FIG. 6 is a perspective view of a damping disc I of the electromechanical coupling buffering torque-limiting mechanism of the range extender for the vehicle;

FIG. 7 is a perspective view of a damping disc II of the electromechanical coupling buffer torque-limiting mechanism of the range extender for vehicles according to the present invention;

FIG. 8 is a perspective view of a damper mounting plate of an electromechanical coupling damping torque-limiting mechanism of a vehicular range extender in accordance with the present invention;

FIG. 9 is a perspective view of an integral wave plate of the electromechanical coupling buffer torque-limiting mechanism of the range extender for vehicles according to the present invention;

FIG. 10 is a perspective view of a friction plate of an electromechanical coupling buffer torque-limiting mechanism of a range extender for a vehicle according to the present invention;

FIG. 11 is a perspective view of a compression washer of the electromechanical coupling buffer torque-limiting mechanism of the range extender for a vehicle of the present invention;

FIG. 12 is a perspective view of a butterfly spring of the electromechanical coupling buffer torque-limiting mechanism of the vehicular range extender;

FIG. 13 is a perspective view of a disc center damping plate of the electromechanical coupling buffer torque-limiting mechanism of the vehicular range extender;

the reference numbers illustrate: 1-an engine crankshaft, 2-a fastening bolt, 3-an internal spline adapter plate, 4-a generator external spline shaft, 5-a torque-limiting shock absorber, 51-an internal spline plate, 52-a damping plate, 521-a spring mounting hole, 53-a buffer spring, 54-a damping plate I, 55-a damping plate II, 551-a limiting groove, 552-a key groove, 553-a connecting key, 56-an integral corrugated sheet, 561-a mounting hole II, 562-a mounting hole I, 57-a friction plate, 571-a friction block, 572-a circular ring main body, 58-a shock absorber mounting plate, 581-an abutting part, 582-a sunken part, 583-a containing space, 6-a compression gasket, 7-a butterfly spring plate, 8-a disc center damping plate, 81-a buckle and 9-a flywheel, 10-engine, 11-generator.

Detailed Description

As shown in fig. 2 to 13, the electromechanical coupling buffer torque-limiting mechanism for the vehicle range extender comprises a torque-limiting damper 5 and a flywheel 9, wherein the flywheel 9 is fixedly connected with the end of the engine crankshaft 1 through a bolt, the outer edge of the flywheel 9 is fixedly connected with the outer edge of the torque-limiting damper 5, and as an alternative form of the utility model, the flywheel 9 can also be a flexible disk or other connecting disks. The generator 11 is provided with a front box shell and is arranged on the rear end face of the engine 10 through bolts, and the torque limiting damper 5 is connected with the generator external spline shaft 4 through an internal spline disc 51 in the middle of the torque limiting damper. The torsion limiting shock absorber 5 comprises two shock absorber mounting discs 58, a damping disc 52, a damping disc I54, a damping disc II 55, an integral corrugated sheet 56 and a friction sheet 57, wherein the damping disc 52, the damping disc I54, the damping disc II 55, the integral corrugated sheet 56 and the friction sheet 57 are arranged between the two shock absorber mounting discs 58.

As shown in fig. 2 to 8, the damper mounting plate 58 is a disk-shaped structure with a through hole formed inside, the damper mounting plate 58 includes a flat abutting portion 581 and a concave portion 582 formed by bending an inner edge of the abutting portion 581 outward, the abutting portion 581 is fixedly connected to the flywheel 9 by a bolt after the concave portions 582 of the two damper mounting plates 58 are abutted against each other, and the concave portions 582 of the two damper mounting plates 58 are abutted against each other to form an accommodating space 583. The inner spline disc 51 is arranged in the middle of the through holes of the two shock absorption mounting discs 58, the damping disc 52, the shock absorption disc I54 and the shock absorption disc II 55 are all circular in overall outline, and the middle parts of the damping disc 52, the shock absorption disc I54 and the shock absorption disc II 55 are respectively provided with a through hole. Damping disc 52 cover is in the middle part position by the outer surface of internal spline dish 51, and damping disc I54, damping disc II 55 also overlap respectively outside internal spline dish 51, and damping disc I54, damping disc II 55 set up respectively in damping disc 52 both sides relatively. The periphery of the through hole in the middle of the damping disc 52 is provided with spring mounting holes 521 in an annular matrix mode, spring limiting grooves 551 are respectively arranged at the positions, opposite to the spring mounting holes 521 of the damping disc 52, of the damping disc I54 and the damping disc II 55, key grooves 552 corresponding to each other in position are arranged on the damping disc I54 and the damping disc II 55, and connecting keys 553 which can connect the damping disc I54 and the damping disc II 55 into a whole are connected between the key grooves 552 corresponding to each other in position. The buffer spring 53 is installed in the spring installation hole 521 of the damping disc 52 and limited by the limiting grooves 551 of the damping discs I54 and II 55.

As shown in fig. 9, 10 and 3, the integral wave-shaped piece 56 is a circular plate with a through hole in the middle, the inner circumference of the integral wave-shaped piece 56 is provided with mounting holes i 562 in a circular matrix, and the outer circumference of the integral wave-shaped piece 56 is provided with mounting holes ii 561 in a circular matrix. The inner circumferential surface of the integral corrugated plate 56 is connected with the outer circumferential surface of the damping disc I54 through rivets, and friction plates 57 are fixedly connected to the two side surfaces of the outer circumference of the integral corrugated plate 56 respectively. The friction plates 57 connected to the outer side and the two side surfaces of the integral corrugated plate 56 are all arranged in the accommodating space 583 formed by the butting of the concave parts 582 of the two shock absorption mounting discs 58, and the friction plates 57 are annular and comprise an annular main body 572 and friction blocks 571 uniformly connected to the surface of the annular main body. The friction plate 57 forms a pressing friction torque in the working process of the system, the friction torque transmission of the system and the limit of the limit transmission torque can be realized, and when the system is overloaded, the torque-limiting shock absorber 5 slips through the friction plate 57 to realize idling, so that the overload protection function is realized.

As shown in fig. 11 to 12, the torque-limiting damper 5 further includes a pressing pad 6 and a butterfly spring 7, the pressing pad 6 and the butterfly spring 7 are respectively disposed in the accommodating space 583, the pressing pad 6 abuts against a surface of one of the friction plates 57 on a side away from the integral wave plate 56, and the butterfly spring 7 is disposed between the pressing pad 6 and an inner side surface of the damper mounting plate 58.

As shown in fig. 13, the torque-limiting shock absorber 5 further includes a disc center damping fin 8, a through hole is formed in the middle of the disc center damping fin 8, a buckle 81 extending inwards is arranged on the inner edge of the through hole, the disc center damping fin 8 is sleeved on the end portion of one end of the inner spline disc 51, and a clamping groove matched with the buckle 81 is formed in the periphery of one end of the inner spline disc 51.

When the generator 11 drags the engine 10 to start, the generator external spline shaft 4 drives the internal spline disc 51 of the torque-limiting damper 5 to rotate, the internal spline disc 51 drives the damping disc 52 to rotate and transmit the damping disc to the damping disc II 55 through the buffer spring 53, the damping disc II 55 is riveted with the integral corrugated sheet 56 through rivets, friction sheets 57 are respectively arranged on two sides of the integral corrugated sheet 56, the static friction force of the friction sheets 57 drives the damper mounting disc 58 to rotate, and the damper mounting disc 58 is connected to the engine flywheel 9 through the damper fastening bolt to drive the engine flywheel to rotate and start the engine 10.

When the range extender engine 10 drives the generator 11 to generate electricity and generate electricity under variable working conditions, the engine crankshaft 1 drives the flywheel 9 to rotate, torque is transmitted to the friction plates 57 through the shock absorber mounting plate 58 and is transmitted to the shock absorption plate II 55 through the two friction plates 57 and the integral wave-shaped plate 56 between the two friction plates, the shock absorption plate II 55 is transmitted to the damping plate 52 through the buffer spring 53, the damping plate 52 drives the inner spline plate 51 to rotate and drives the generator to generate electricity through being coupled with the outer spline shaft of the generator, and the two processes can play a role in damping the electromechanical coupling of the range extender.

The above embodiments are only preferred embodiments of the present invention, and the structure of the present invention is not limited to the forms of the above embodiments, and any modifications, equivalents and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The electromechanical coupling buffering and torque limiting mechanism of the vehicle range extender comprises a torque limiting shock absorber (5) and a flywheel (9), wherein the flywheel (9) is fixedly connected with the end part of an engine crankshaft (1) through a bolt, the outer edge of the flywheel (9) is fixedly connected with the outer edge of the torque limiting shock absorber (5), the torque limiting shock absorber (5) is connected with an external spline shaft (4) of a generator through an internal spline disc (51) in the middle of the torque limiting shock absorber, the electromechanical coupling buffering and torque limiting mechanism is characterized in that the torque limiting shock absorber (5) comprises two shock absorbing mounting discs (58), a damping disc (52) arranged between the two shock absorbing mounting discs (58), a shock absorbing disc I (54), a shock absorbing disc II (55), an integral corrugated sheet (56) and a friction sheet (57), the shock absorbing mounting discs (58) are of a disc-shaped structure, through holes are formed in the inner sides of the shock absorbing mounting discs (58), and concave parts (582) of the two shock absorbing mounting discs (58) are fixedly connected with the flywheel (9) after being mutually butted, the damping disc I (54) and the damping disc II (55) are respectively and oppositely arranged on two sides of the damping disc (52), spring mounting holes (521) are formed in the periphery of the through hole in the middle of the damping disc I (52) and the damping disc II (55) in an annular matrix mode, spring limiting grooves (551) are respectively arranged on the damping disc I (54) and the damping disc II (55) in positions opposite to the spring mounting holes (521) of the damping disc (52), and buffer springs (53) are arranged in the spring mounting holes (521) of the damping disc (52) and are supported by the damping disc I (54) and the damping disc II (55) respectively, Spacing groove (551) of damper disc II (55) are spacing, whole wave form piece (56) are the middle part and open the ring board that has the through-hole, whole wave form piece (56) are leaned on inboard circumference surface to lean on outside circumference surface to be connected through rivet and damper disc I (54), whole wave form piece (56) are leaned on both sides surface of outside circumference fixedly connected with friction disc (57) respectively, friction disc (57) that whole wave form piece (56) outside and both sides surface are connected all set up in accommodation space (583) that two shock attenuation mounting disc (58) depressed part (582) butt joint formed.

2. The electromechanical coupling buffer torque-limiting mechanism of the range extender for the vehicle as claimed in claim 1, wherein the damping mounting disc (58) comprises a flat butt joint portion (581) and a concave portion (582) formed by bending the inner edge of the butt joint portion (581) outwards, the butt joint portion (581) is fixedly connected with the flywheel (9) through a bolt after the concave portions (582) of the two damping mounting discs (58) are butted with each other, and the concave portions (582) of the two damping mounting discs (58) are butted to form an accommodating space (583).

3. The electromechanical coupling buffering torque-limiting mechanism of the range extender for the vehicle as claimed in claim 2, wherein the torque-limiting shock absorber (5) further comprises a pressing gasket (6) and a butterfly-shaped elastic sheet (7), the pressing gasket (6) and the butterfly-shaped elastic sheet (7) are respectively arranged in the accommodating space (583), the pressing gasket (6) abuts against the surface of one friction plate (57) far away from the integral wave-shaped plate (56), and the butterfly-shaped elastic sheet (7) is arranged between the pressing gasket (6) and the inner side surface of the shock-absorbing mounting plate (58).

4. The electromechanical coupling buffer torque-limiting mechanism of the range extender for the vehicle as claimed in claim 1, wherein the torque-limiting shock absorber (5) further comprises a disc center damping plate (8), a through hole is formed in the middle of the disc center damping plate (8), a buckle (81) extending inwards is arranged at the inner edge of the through hole, the disc center damping plate (8) is sleeved at one end of the internally splined disc (51), and a clamping groove matched with the buckle (81) is arranged at the periphery of one end of the internally splined disc (51).

5. The electromechanical coupling buffer torque-limiting mechanism for the vehicle range extender is characterized in that key slots (552) corresponding to each other in position are arranged on the damping disc I (54) and the damping disc II (55), and a connecting key (553) capable of connecting the damping disc I (54) and the damping disc II (55) into a whole is connected between the key slots (552) corresponding to each other in position.

6. The electromechanical coupling buffer torque-limiting mechanism of the range extender for the vehicle as claimed in claim 1, wherein the friction plate (57) is annular, and the friction plate (57) comprises an annular main body (572) and friction blocks (571) uniformly connected to the surface of the annular main body (572).