Large-rotation-angle multi-piece type torsion-limiting shock absorber integrated with spring seat

Abstract

The utility model discloses a large-corner multi-piece type torsion-limiting shock absorber integrated with a spring seat, which comprises a shock absorber sub-assembly and a multi-piece type torsion-limiting device sub-assembly, the multi-piece type torsion-limiting device sub-assembly is arranged at the inner diameter position of the shock absorber sub-assembly, and a side spring seat is circumferentially arranged at the edge covering position of a steel piece. A middle spring seat, two side spring seats, a first-stage spring group and a second-stage spring group form a spring group sub-assembly, and a plurality of spring group sub-assemblies are circumferentially distributed in the shock absorber sub-assembly, so that the multi-stage rigidity characteristic and the asymmetric damping characteristic are realized. The torsion limiting damper has the advantages that the rigidity grading characteristic is optimized, and the damping effect of the torsion limiting damper under the working conditions of starting, stopping, idling charging and the like is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of a power assembly system of a hybrid vehicle, in particular to a large-angle multi-piece torsion-limiting vibration damper with an integrated spring seat. Background Art

[0002] Torque limiting dampers are mainly used in automotive powertrain systems. They are usually components installed between the engine and gearbox to provide vibration reduction, noise reduction and overload torque protection for the vehicle.

[0003] Currently, in hybrid vehicles, due to the use of internal combustion engines, shock absorbers must generally be installed at the crankshaft output end of the engine. Due to the particularity of the powertrain structure of some hybrid vehicles, there is no torque-limiting clutch installed between the engine and the gearbox. In such applications, shock absorbers must have a torque-limiting function. In order to obtain better vehicle comfort, the performance of the torque-limiting shock absorber must be improved within a limited space.

[0004] CN214425011U discloses a torque-limiting vibration damper that generates stiffness by compressing a coil spring and limiting torque by pressing a disc spring against a friction plate. This device only offers basic vibration-reducing and torque-limiting capabilities, making it a relatively low-cost solution with limited vibration-reducing and torque-limiting capabilities. This is an area that needs to be improved in this application.

[0005] CN216158197U discloses an asymmetric damping, large-angle torque-limiting shock absorber. This device improves the spring's damping performance by achieving a larger torsion angle. This asymmetric damping further optimizes vehicle matching. However, the spring is positioned relatively close to the center, and the torque limiter occupies a large space. This is an area that needs to be improved in this application.

[0006] CN217784117U discloses a large-angle multi-plate torque-limiting damper. This design places the torque limiter at the center of the damper. This allows for greater damping space within the same space, enabling a greater torsion angle and reducing damping stiffness. To achieve even better damping performance, further reduction in damping stiffness and asymmetric damping are necessary. This is an area that needs to be addressed in this application. Summary of the Invention

[0007] The technical problem to be solved by the utility model is to provide a large-angle multi-plate torque-limiting shock absorber with an integrated spring seat, which optimizes the stiffness grading characteristics and effectively improves the vibration reduction effect of the torque-limiting shock absorber under working conditions such as start-stop and idling charging.

[0008] In order to solve the above technical problems, the utility model provides a large-angle multi-plate torque limiter shock absorber with an integrated spring seat, including a shock absorber subassembly and a multi-plate torque limiter subassembly. The multi-plate torque limiter subassembly is arranged at the inner diameter position of the shock absorber subassembly and in the central basin-shaped space of the two steel plates; after the engine power passes through the shock absorber subassembly, the friction pair and drive groove at the inner diameter position of the steel plate transmit the power to the multi-plate torque limiter subassembly.

[0009] The shock absorber subassembly includes a shaft sleeve plate, a steel sheet, a cover plate, a first-stage large spring, a first-stage small spring, a cover plate retaining ring, a damping ring, a flat pin, a limit pin, an intermediate spring seat, a damping disc spring seat, a damping disc spring, a second-stage large spring, a second-stage small spring, a rubber spring, a side spring seat, a cover plate wave spring, and a reverse damping drive plate; wherein:

[0010] The shaft sleeve plate is provided with a plurality of first reverse damping driving surfaces distributed in the circumferential direction, as well as a first damping friction pair and a second damping friction pair at the inner diameter position of the shaft sleeve plate;

[0011] The steel sheet is provided with a plurality of circumferentially distributed edges and a third damping friction pair at the mid-diameter position of the steel sheet;

[0012] The cover plate is provided with a plurality of circumferentially distributed de-weighting holes, which are used to optimize the inertia distribution of each component;

[0013] The damping ring is provided with a plurality of inner tooth grooves distributed in the circumferential direction, and a fourth damping friction pair and a fifth damping friction pair at the outer diameter position of the damping ring;

[0014] The limit pin is provided with a de-weighting ring, which is used to optimize the inertia distribution of each component;

[0015] The middle spring seat is provided with a waist-shaped hole, a limit pin hole, a first positioning column, a second positioning column, a guide angle, a first limit surface, a second limit surface, and a sliding surface;

[0016] A sixth damping friction pair is arranged on the damping disc spring seat;

[0017] The side spring seat is provided with a third positioning column, a third limiting surface, a groove, a supporting surface, and a second reverse damping driving surface;

[0018] The reverse damping drive plate is provided with a plurality of reverse damping drive angles distributed in the circumferential direction, as well as a seventh damping friction pair and an eighth damping friction pair at the inner diameter position of the reverse damping drive plate.

[0019] A steel plate is arranged on both sides of the axial position of the shaft sleeve plate, and a cover plate is arranged on the outside of the axial position of the steel plate. The damping ring and the reverse damping drive plate are arranged in the axial space between the first damping friction pair on the shaft sleeve plate and the steel plate on one side. The reverse damping drive plate is arranged between the damping ring and the steel plate. The damping disc spring seat and the damping disc spring are arranged in the axial space between the second damping friction pair on the shaft sleeve plate and the steel plate on the other side. In the axial space between the two steel plates and the cover plates on both sides, a cover plate retaining ring is arranged on one side and a cover plate wave spring is arranged on the other side.

[0020] The two ends of the flat pin pass through the flat pin holes distributed circumferentially at the inner diameter position of the steel sheet, and the two steel sheets are riveted into one by the flat pin. The two ends of the limit pin pass through the limit pin holes distributed circumferentially on the cover plate, and the middle section of the limit pin passes through the limit pin hole on the intermediate spring seat. Multiple intermediate spring seats are evenly distributed circumferentially between the two cover plates. The two cover plates and multiple intermediate spring seats are connected into one by riveting the two ends of the limit pin.

[0021] The first-level small spring is arranged at the center of the first-level large spring to form a first-level spring group; the rubber spring is arranged at the center of the second-level small spring, and the second-level small spring is arranged at the center of the second-level large spring to form a second-level spring group; the side spring seats are circumferentially arranged at the edge of the steel sheet, a side spring seat is arranged on each side of a middle spring seat, and a group of first-level spring groups and a group of second-level spring groups are arranged between the middle spring seat and the two side spring seats. One end of the first-level small spring is arranged on the first positioning column side of the middle spring seat, and the other end is arranged on the third positioning column side of the side spring seat. One end of the second-level small spring is arranged on the second positioning column side of the middle spring seat, and the other end is arranged on the third positioning column side of the side spring seat. An middle spring seat, two side spring seats, a group of first-level spring groups, and a group of second-level spring groups form a spring component assembly, and multiple spring component assemblies are circumferentially distributed in the shock absorber sub-assembly.

[0022] During the working process of the shock absorber subassembly to generate stiffness characteristics, the shaft sleeve plate and the steel sheet generate relative rotation angle to compress the spring component assembly. The shaft sleeve plate contacts the supporting surface of the side spring seat, drives the side spring seat to compress the first-level spring group, and the first-level spring group drives the middle spring seat. The middle spring seat further compresses the second-level spring group. The second-level spring group contacts the other side spring seat. The supporting surface of the side spring seat contacts the steel sheet. The edge of the steel sheet is placed in the groove of the side spring seat. When the first-level spring group is compressed to the set position, the first limit surface of the middle spring seat contacts the third limit surface of the side spring seat on one side. The first spring assembly is limited by surface contact, preventing further compression, resulting in the first-stage stiffness characteristic of vibration damping. Further compression of the second spring assembly to the set position causes the second locating post of the center spring seat and the third locating post of the other side spring seat to simultaneously contact the rubber spring, resulting in the second-stage stiffness characteristic of vibration damping. Further compression of the second spring assembly and rubber spring to the set position causes the second limiting surface of the center spring seat to contact and limit the third limiting surface of the other side spring seat, preventing further compression of the second spring assembly and rubber spring, resulting in the third-stage stiffness characteristic of vibration damping. During the compression of the spring assembly, the sliding surface of the center spring seat slides in contact with the shaft sleeve plate, and the guide angles on both sides of the center spring seat ensure smooth sliding.

[0023] In the working process of the shock absorber sub-assembly generating the damping characteristic, when the shaft sleeve plate compresses the spring component assembly clockwise, a reverse large damping characteristic is generated. During the forward stroke, the first reverse damping drive surface on the shaft sleeve plate contacts the reverse damping drive angle on the reverse damping drive plate, and the shaft sleeve plate drives the reverse damping drive plate to rotate relative to the steel plate and the damping ring. The damping ring cooperates with the flat pin through multiple circumferentially distributed internal tooth grooves, and the damping ring and the steel plate cannot rotate relative to each other; during the return stroke, the second reverse damping drive surface on the side spring seat contacts the reverse damping drive angle on the reverse damping drive plate, and the side spring seat drives the reverse damping drive plate to rotate relative to the steel plate and the damping ring. The shaft sleeve plate and the damping disc spring seat, the shaft sleeve plate and the damping ring, the damping ring and the reverse damping drive plate, and the reverse damping drive plate and the steel plate always generate sliding friction during the forward stroke and return stroke. The reverse large damping characteristic is the damping torque generated by the relative sliding friction between the second damping friction pair and the sixth damping friction pair, the first damping friction pair and the fifth damping friction pair, the fourth damping friction pair and the eighth damping friction pair, and the third damping friction pair and the seventh damping friction pair. When the shaft sleeve plate compresses the spring component assembly counterclockwise, a positive small damping characteristic is generated, and sliding friction is always generated between the shaft sleeve plate, the damping ring, and the damping disc spring seat during the forward and return strokes. The positive small damping characteristic is the damping torque generated by the relative sliding friction between the second damping friction pair and the sixth damping friction pair, and the first damping friction pair and the fifth damping friction pair.

[0024] The multi-plate torque limiter subassembly includes a torque limiting disc spring, a torque limiting disc spring seat, a spline rivet, a spline sleeve, a first flexible plate, a torque limiting friction plate, a torque limiting drive plate, a hollow rivet, a force transmission plate, a bearing ring, a bearing damping plate, a wave spring, and a second flexible plate; a torque limiting friction plate is arranged on each side of the axial position of the first flexible plate and the second flexible plate, and the hollow rivets pass through the rivet holes on the torque limiting friction plate and the rivet holes on the flexible plate respectively, and the two torque limiting friction plates are riveted to the first flexible plate and the second flexible plate respectively, and the heads of the hollow rivets are arranged in the rivet hole countersunk holes on the torque limiting friction plate to form the first torque limiting friction plate assembly and the second torque limiting friction plate assembly.

[0025] The first torque-limiting friction plate assembly and the second torque-limiting friction plate assembly are arranged on both sides of the axial position of the spline sleeve, a bearing ring is arranged between the spline sleeve and the first torque-limiting friction plate assembly, a bearing damping plate and a wave spring are arranged between the spline sleeve and the second torque-limiting friction plate assembly, the torque-limiting drive plate is arranged between the first torque-limiting friction plate assembly and the second torque-limiting friction plate assembly, and a force transmission plate is arranged in the radial space between the spline sleeve and the torque-limiting drive plate. The inner teeth of the force transmission plate contact with the outer teeth of the spline sleeve to transmit torque, and the outer ring of the force transmission plate and the inner hole clearance of the torque-limiting drive plate are matched for positioning, and the spline rivet passes through the rivet holes on the first flexible plate, the second flexible plate and the force transmission plate respectively to rivet the three together, the torque-limiting disc spring seat is arranged on the other side of the first torque-limiting friction plate assembly, and the torque-limiting disc spring is arranged on the other side of the torque-limiting disc spring seat, thereby forming a multi-plate torque limiter subassembly.

[0026] The beneficial effects of the present invention are:

[0027] 1) This utility model integrates a spring seat on the basis of a large-angle multi-plate torque limiter structure, further increasing the shock absorber torsion angle, achieving more levels of stiffness, and optimizing the stiffness grading characteristics;

[0028] 2) This invention integrates a spline floating function on the basis of a large-angle multi-plate torque limiter structure, effectively addressing the reduction in the service life of the torque limiter caused by eccentricity between the engine crankshaft and the transmission shaft, and effectively improving the allowable eccentricity and service life of the torque limiter;

[0029] 3) The present invention integrates an asymmetric damping function on the basis of a large-angle multi-plate torque limiter structure, thereby realizing different positive and negative damping functions of the shock absorber, and effectively improving the vibration reduction effect of the torque limiter shock absorber in working conditions such as start-stop and idling charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1This is a schematic diagram of the assembly structure of a specific embodiment of the utility model;

[0032] Figure 2 for Figure 1 The upper part of the AA section;

[0033] Figure 3 for Figure 1 The lower half of the AA section;

[0034] Figure 4 It is the upper half of the exploded view of a specific embodiment of the utility model;

[0035] Figure 5 It is the lower half of the exploded view of a specific embodiment of the utility model;

[0036] Figure 6 It is a schematic isometric diagram of a specific embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of an intermediate spring seat according to a specific embodiment of the present utility model;

[0038] Figure 8 This is a schematic diagram of a side spring seat according to a specific embodiment of the present utility model;

[0039] Figure 9 A schematic diagram of the vibration reduction characteristics of a specific embodiment of the utility model;

[0040] Description of the numbers in the figure

[0041] 1- shaft sleeve plate;

[0042] 101-reverse damping driving surface A; 102-damping friction pair A;

[0043] 103-damping friction pair B;

[0044] 2-Steel sheet;

[0045] 201-Edge; 202-Damping friction pair C;

[0046] 3-cover plate;

[0047] 301-Remove duplicate holes;

[0048] 4-first level large spring 5-first level small spring;

[0049] 6-cover plate retaining ring;

[0050] 7-damping ring;

[0051] 701-internal tooth groove; 702-damping friction pair D;

[0052] 703-damping friction pair E;

[0053] 8-torsion limiting disc spring; 9-torsion limiting disc spring seat;

[0054] 10-Spline rivets;

[0055] 11-spline sleeve; 12-flexible plate A;

[0056] 13-torque limiting friction plate; 14-flat pin;

[0057] 15-limit pin;

[0058] 1501-remove heavy ring;

[0059] 16-middle spring seat;

[0060] 1601-waist-shaped hole; 1602-limit pin hole:

[0061] 1603-Positioning column A; 1604-Positioning column B;

[0062] 1605-guide angle; 1606-limiting surface A;

[0063] 1607-limiting surface B; 1608-sliding surface;

[0064] 17- damping disc spring seat;

[0065] 1701-damping friction pair F;

[0066] 18- damping disc spring; 19- torque limiting drive plate;

[0067] 20-Hollow rivet; 21-Secondary large spring;

[0068] 22-secondary small spring; 23-rubber spring;

[0069] 24-side spring seat;

[0070] 2401- positioning column C; 2402- limiting surface C;

[0071] 2403-groove; 2404-support surface;

[0072] 2405-reverse damping driving surface B;

[0073] 25-Cover plate wave spring;

[0074] 26-reverse damping drive plate;

[0075] 2601-reverse damping drive angle; 2602-damping friction pair G;

[0076] 2603-damping friction pair H;

[0077] 27-force transmission plate; 28-bearing ring;

[0078] 29-bearing damping plate; 30-wave spring;

[0079] 31-Flexible board B. DETAILED DESCRIPTION

[0080] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0081] Figure 1 The figure shows the assembly structure diagram of a specific embodiment of the utility model. Figure 2 Shown Figure 1 The upper part of the AA section, Figure 3 Shown Figure 1 The lower half of the AA section, Figure 4 The upper half of the exploded view of a specific embodiment of the present invention is shown. Figure 5 The lower half of the exploded view of a specific embodiment of the present invention is shown. Figure 6 It shows an axonometric diagram of a specific embodiment of the present utility model, Figure 7 A schematic diagram of the intermediate spring seat in a specific embodiment of the present utility model is shown. Figure 8 A schematic diagram of a side spring seat according to a specific embodiment of the present invention is shown. Figure 9 A schematic diagram of the vibration reduction characteristics of a specific embodiment of the present utility model is shown.

[0082] like Figure 1-Figure 3 As shown, the utility model provides a large-angle multi-plate torque limiter shock absorber with an integrated spring seat, which includes a shock absorber subassembly and a multi-plate torque limiter subassembly.

[0083] like Figure 4-Figure 5 As shown, the shock absorber subassembly includes a shaft sleeve plate 1, a steel sheet 2, a cover plate, a first-stage large spring 4, a first-stage small spring 5, a cover plate retaining ring 6, a damping ring 7, a flat pin 14, a limit pin 15, an intermediate spring seat 16, a damping disc spring seat 17, a damping disc spring 18, a second-stage large spring 21, a second-stage small spring 22, a rubber spring 23, a side spring seat 24, a cover plate wave spring 25, and a reverse damping drive plate 26; wherein:

[0084] The shaft sleeve plate 1 is provided with a plurality of circumferentially distributed reverse damping driving surfaces A101 , as well as a damping friction pair A102 and a damping friction pair B103 at the inner diameter position of the shaft sleeve plate.

[0085] The steel sheet 2 is provided with a plurality of circumferentially distributed edges 201 and a damping friction pair C202 at the mid-diameter position of the steel sheet.

[0086] The cover plate 3 is provided with a plurality of circumferentially distributed de-weighting holes 301 , which are used to optimize the inertia distribution of each component.

[0087] The damping ring 7 is provided with a plurality of inner tooth grooves 701 distributed in the circumferential direction, and a damping friction pair D702 and a damping friction pair E703 at the outer diameter position of the damping ring.

[0088] A de-weighting ring 1501 is arranged on the limiting pin 15, and the de-weighting ring 1501 is used to optimize the inertia distribution of each component.

[0089] like Figure 7 As shown, the middle spring seat 16 is provided with a waist-shaped hole 1601 , a limiting pin hole 1602 , a positioning column A 1603 , a positioning column B 1604 , a guide angle 1605 , a limiting surface A 1606 , a limiting surface B 1607 , and a sliding surface 1608 .

[0090] A damping friction pair F1701 is arranged on the damping disc spring seat 17 .

[0091] like Figure 8 As shown, the side spring seat 24 is provided with a positioning column C2401 , a limiting surface C2402 , a groove 2403 , a supporting surface 2404 , and a reverse damping driving surface B2405 .

[0092] The reverse damping drive plate 26 is provided with a plurality of reverse damping drive angles 2601 distributed in the circumferential direction, as well as a damping friction pair G 2602 and a damping friction pair H 2603 at the inner diameter position of the reverse damping drive plate.

[0093] A steel sheet 2 is arranged on both sides of the axial position of the shaft sleeve plate 1, and a cover plate 3 is arranged on both sides of the axial position of the steel sheet 2. The damping ring 7 and the reverse damping drive plate 26 are arranged in the axial space between the damping friction pair A102 on the shaft sleeve plate 1 and the steel sheet 2 on one side. The reverse damping drive plate 26 is arranged between the damping ring 7 and the steel sheet 2. The damping disc spring seat 17 and the damping disc spring 18 are arranged in the axial space between the damping friction pair B103 on the shaft sleeve plate 1 and the steel sheet 2 on the other side. In the axial space between the two steel sheets 2 and the cover plates 3 on both sides, a cover plate retaining ring 6 is arranged on one side and a cover plate wave spring 25 is arranged on the other side.

[0094] The two ends of the flat pin 14 pass through the flat pin holes circumferentially distributed at the inner diameter position of the steel sheet 2, and the two steel sheets 2 are riveted into one through the flat pin 14. The two ends of the limit pin 15 pass through the limit pin holes circumferentially distributed on the cover plate 3, and the middle section of the limit pin 15 passes through the limit pin hole 1602 on the intermediate spring seat 16. Multiple intermediate spring seats 16 are evenly distributed circumferentially between the two cover plates 3. The two cover plates 3 and the multiple intermediate spring seats 16 are connected into one by riveting the two ends of the limit pin 15.

[0095] The first-level small spring 5 is arranged at the center of the first-level large spring 4 to form a first-level spring group; the rubber spring 23 is arranged at the center of the second-level small spring 22, and the second-level small spring 22 is arranged at the center of the second-level large spring 21 to form a second-level spring group. The side spring seats 24 are circumferentially arranged at the edge 201 position of the steel sheet 2, a side spring seat 24 is arranged on each side of an intermediate spring seat 16, a first-level spring group and a second-level spring group are arranged between the intermediate spring seat 16 and the two side spring seats 24, one end of the first-level small spring 5 is arranged on the side of the positioning column A1603 of the intermediate spring seat 16, and the other end is arranged on the side of the positioning column C2401 of the side spring seat 24, one end of the second-level small spring 22 is arranged on the side of the positioning column B1604 of the intermediate spring seat 16, and the other end is arranged on the side of the positioning column C2401 of the side spring seat 24. An intermediate spring seat 16, two side spring seats 24, a first-level spring group, and a second-level spring group constitute a spring component assembly, and multiple spring component assemblies are circumferentially distributed in the shock absorber sub-assembly.

[0096] like Figure 6 As shown, during the working process of the shock absorber subassembly generating stiffness characteristics, the shaft sleeve plate 1 and the steel sheet 2 generate a relative rotation angle to compress the spring component assembly. The shaft sleeve plate 1 contacts the support surface 2404 of the side spring seat 24, driving the side spring seat 24 to compress the primary spring group. The primary spring group drives the middle spring seat 16, and the middle spring seat 16 further compresses the secondary spring group. The secondary spring group contacts the other side spring seat 24, and the support surface 2404 of the side spring seat 24 contacts the steel sheet 2. The edge 201 of the steel sheet 2 is placed in the groove 2403 of the side spring seat 24. When the primary spring group is compressed to the set position, the limit surface A1606 of the middle spring seat 16 contacts the side spring on one side. The stop surface C2402 of the seat 24 contacts and limits the primary spring assembly, preventing further compression, resulting in the first-stage stiffness characteristic of the vibration-damping characteristic. The secondary spring assembly is further compressed to the set position. The positioning post B1604 of the middle spring seat 16 and the positioning post C2401 of the side spring seat 24 simultaneously contact the rubber spring 23, forming the second-stage stiffness characteristic of the vibration-damping characteristic. The secondary spring assembly and rubber spring 23 are further compressed to the set position. The stop surface B1607 of the middle spring seat 16 contacts and limits the stop surface C2402 of the side spring seat 24, preventing further compression of the secondary spring assembly and rubber spring 23, forming the third-stage stiffness characteristic of the vibration-damping characteristic. During the compression process of the spring assembly, the sliding surface 1608 of the middle spring seat 16 contacts and slides with the shaft sleeve plate 1. The guide angles 1605 on both sides of the middle spring seat 16 ensure smooth sliding.

[0097] like Figure 6As shown, in the working process of the shock absorber subassembly generating the damping characteristic, when the shaft sleeve plate 1 compresses the spring component assembly clockwise, a reverse large damping characteristic is generated. During the forward stroke, the reverse damping drive surface A101 on the shaft sleeve plate 1 contacts the reverse damping drive angle 2601 on the reverse damping drive plate 26, and the shaft sleeve plate 1 drives the reverse damping drive plate 26 to rotate relative to the steel sheet 2 and the damping ring 7. The damping ring 7 cooperates with the flat pin 14 through multiple circumferentially distributed internal tooth grooves 701, and the damping ring 7 and the steel sheet 2 cannot rotate relative to each other. During the return stroke, the reverse damping drive surface B2405 on the side spring seat 24 contacts the reverse damping drive angle 2601 on the reverse damping drive plate 26. The dynamic angle 2601 is in contact, and the side spring seat 24 drives the reverse damping drive plate 26 to rotate relative to the steel sheet 2 and the damping ring 7. The shaft sleeve plate 1 and the damping disc spring seat 17, the shaft sleeve plate 1 and the damping ring 7, the damping ring 7 and the reverse damping drive plate 26, and the reverse damping drive plate 26 and the steel sheet 2 always generate sliding friction during the forward and return strokes. The reverse large damping characteristic is the damping torque generated by the relative sliding friction between the damping friction pair B103 and the damping friction pair F1701, the damping friction pair A102 and the damping friction pair E703, the damping friction pair D702 and the damping friction pair H2603, and the damping friction pair C202 and the damping friction pair G2602. When the shaft sleeve plate 1 compresses the spring component assembly counterclockwise, a positive small damping characteristic is generated, and sliding friction is always generated between the shaft sleeve plate 1 and the damping ring 7 and the damping disc spring seat 17 during the forward and return strokes. The positive small damping characteristic is the damping torque generated by the relative sliding friction between the damping friction pair B103 and the damping friction pair F1701, and the damping friction pair A102 and the damping friction pair E703.

[0098] like Figure 9 As shown, the vibration damping characteristics of the large-angle multi-plate torque limiter with integrated spring seat of the present invention are compared with those of the traditional large-angle multi-plate torque limiter. The traditional large-angle multi-plate torque limiter only achieves the two-level stiffness and symmetrical damping characteristics shown in vibration damping characteristic A, while the large-angle multi-plate torque limiter with integrated spring seat of the present invention achieves the characteristics shown in vibration damping characteristic B, with three levels of stiffness, asymmetric damping and a larger rotation angle, achieving better vibration damping performance in vehicle matching.

[0099] The multi-plate torque limiter subassembly includes a torque limiting disc spring 8, a torque limiting disc spring seat 9, a spline rivet 10, a spline shaft sleeve 11, a flexible plate A12, a torque limiting friction plate 13, a torque limiting drive plate 19, a hollow rivet 20, a force transmission plate 27, a bearing ring 28, a bearing damping plate 29, a wave spring 30, and a flexible plate B31.

[0100] After the engine power passes through the shock absorber sub-assembly, the friction pair and drive groove at the inner diameter position of the steel plate 2 transmit the power to the multi-plate torque limiter sub-assembly.

[0101] A torque-limiting friction plate 13 is arranged on each side of the axial position of the flexible plate A12 and the flexible plate B31, and hollow rivets 20 pass through the rivet holes on the torque-limiting friction plate 13 and the rivet holes of the flexible plate A12 and the flexible plate B31 respectively, riveting the two torque-limiting friction plates to the flexible plate A12 and the flexible plate B31 respectively. At the same time, the heads of the hollow rivets 20 are arranged in the countersunk holes of the rivet holes on the torque-limiting friction plate 13 to form the torque-limiting friction plate assembly A and the torque-limiting friction plate assembly B.

[0102] A torque limiting friction plate assembly A and a torque limiting friction plate assembly B are arranged on both sides of the axial position of the spline sleeve 11, a bearing ring 28 is arranged between the spline sleeve 11 and the torque limiting friction plate assembly A, a bearing damping plate 29 and a wave spring 30 are arranged between the spline sleeve 11 and the torque limiting friction plate assembly B, the torque limiting drive plate 19 is arranged between the torque limiting friction plate assembly A and the torque limiting friction plate assembly B, and a force transmission plate 27 is arranged in the radial space between the spline sleeve 11 and the torque limiting drive plate 19. The inner teeth of the force transmission plate 27 contact with the outer teeth of the spline sleeve 11 to transmit torque, and the outer ring of the force transmission plate 27 and the inner hole clearance of the torque limiting drive plate 19 are matched and positioned. The spline rivet 10 passes through the rivet holes on the flexible plate A12, the flexible plate B31 and the force transmission plate 27 to rivet the three together. The torque limiting disc spring seat 9 is arranged on the other side of the torque limiting friction plate assembly A, and the torque limiting disc spring 8 is arranged on the other side of the torque limiting disc spring seat 9, thereby forming a multi-plate torque limiter subassembly.

[0103] The multi-plate torque limiter sub-assembly is arranged at the inner diameter position of the shock absorber sub-assembly and at the same time in the central basin-shaped space of the two steel plates 2, thereby forming a large-angle multi-plate torque limiter shock absorber assembly with an integrated spring seat.

[0104] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A large-angle multi-plate torque limiter with an integrated spring seat, comprising a shock absorber subassembly and a multi-plate torque limiter subassembly, characterized in that: The multi-plate torque limiter subassembly is arranged at the inner diameter position of the shock absorber subassembly and in the central basin-shaped space of the two steel plates; the side spring seats are circumferentially arranged at the edge position of the steel plates, a side spring seat is arranged on each side of a middle spring seat, and a group of primary spring groups and a group of secondary spring groups are arranged between the middle spring seat and the two side spring seats. A middle spring seat, two side spring seats, a group of primary spring groups, and a group of secondary spring groups constitute a spring component assembly. Multiple spring component assemblies are circumferentially distributed in the shock absorber subassembly to achieve multi-stage stiffness characteristics and asymmetric damping characteristics.

2. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 1, characterized in that: The shock absorber subassembly includes a shaft sleeve plate, a steel sheet, a cover plate, a first-level large spring, a first-level small spring, a cover plate retaining ring, a damping ring, a flat pin, a limit pin, an intermediate spring seat, a damping disc spring seat, a damping disc spring, a second-level large spring, a second-level small spring, a rubber spring, a side spring seat, a cover plate wave spring, and a reverse damping drive plate; the first-level small spring is arranged at the center of the first-level large spring to form a first-level spring group; the rubber spring is arranged at the center of the second-level small spring, and the second-level small spring is arranged at the center of the second-level large spring to form a second-level spring group.

3. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 2, characterized in that: One end of the first-stage small spring is arranged on the first positioning column side of the middle spring seat, and the other end is arranged on the third positioning column side of the side spring seat. One end of the second-stage small spring is arranged on the second positioning column side of the middle spring seat, and the other end is arranged on the third positioning column side of the side spring seat.

4. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 2, characterized in that: A steel plate is arranged on both sides of the axial position of the shaft sleeve plate, and a cover plate is arranged on the outside of the axial position of the steel plate. The damping ring and the reverse damping drive plate are arranged in the axial space between the first damping friction pair on the shaft sleeve plate and the steel plate on one side. The reverse damping drive plate is arranged between the damping ring and the steel plate. The damping disc spring seat and the damping disc spring are arranged in the axial space between the second damping friction pair on the shaft sleeve plate and the steel plate on the other side. In the axial space between the two steel plates and the cover plates on both sides, a cover plate retaining ring is arranged on one side and a cover plate wave spring is arranged on the other side.

5. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 1, characterized in that: In the process of the shock absorber subassembly generating multi-stage stiffness characteristics, the shaft sleeve plate and the steel sheet generate relative rotation angle compression spring component assembly, the shaft sleeve plate contacts the supporting surface of the side spring seat, drives the side spring seat to compress the first-stage spring group, the first-stage spring group drives the middle spring seat, the middle spring seat further compresses the second-stage spring group, the second-stage spring group contacts the other side spring seat, the supporting surface of the side spring seat contacts the steel sheet, the edge of the steel sheet is placed in the groove of the side spring seat, when the first-stage spring group is compressed to the set position, the first limit surface of the middle spring seat contacts the third limit surface of the side spring seat on one side The contact surface is limited, at this time the first-level spring group cannot be further compressed, forming the first-level stiffness characteristic of the vibration reduction characteristic; further compressing the second-level spring group to the set position, the second positioning column of the middle spring seat and the third positioning column of the side spring seat on the other side contact the rubber spring at the same time, forming the second-level stiffness characteristic of the vibration reduction characteristic; further compressing the second-level spring group and the rubber spring to the set position, the second limiting surface of the middle spring seat contacts the third limiting surface of the side spring seat on the other side for limitation, at this time the second-level spring group and the rubber spring cannot be further compressed, forming the third-level stiffness characteristic of the vibration reduction characteristic.

6. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 1, characterized in that: In the process of the shock absorber sub-assembly generating asymmetric damping characteristics, a reverse large damping characteristic is generated in the process of the shaft sleeve plate compressing the spring component assembly clockwise. The reverse large damping characteristic is the damping torque generated by the relative sliding friction between the second damping friction pair and the sixth damping friction pair, the first damping friction pair and the fifth damping friction pair, the fourth damping friction pair and the eighth damping friction pair, and the third damping friction pair and the seventh damping friction pair; when the shaft sleeve plate compresses the spring component assembly counterclockwise, a positive small damping characteristic is generated. The positive small damping characteristic is the damping torque generated by the relative sliding friction between the second damping friction pair and the sixth damping friction pair, and the first damping friction pair and the fifth damping friction pair.

7. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 2, characterized in that: The two ends of the flat pin respectively pass through the flat pin holes distributed circumferentially at the inner diameter position of the steel sheet, and the two steel sheets are riveted into one; the two ends of the limit pin respectively pass through the limit pin holes distributed circumferentially on the cover plate, and the middle section of the limit pin passes through the limit pin hole on the intermediate spring seat. Multiple intermediate spring seats are evenly distributed circumferentially between the two cover plates, and the two cover plates and multiple intermediate spring seats are connected into one by riveting the two ends of the limit pin.

8. The large-angle multi-plate torque limiting vibration damper with integrated spring seat according to any one of claims 1 to 7, characterized in that: The shaft sleeve plate is provided with a plurality of first reverse damping driving surfaces distributed in the circumferential direction, as well as a first damping friction pair and a second damping friction pair at the inner diameter position of the shaft sleeve plate; The steel sheet is provided with a plurality of circumferentially distributed edges and a third damping friction pair at the mid-diameter position of the steel sheet; The cover plate is provided with a plurality of circumferentially distributed de-weighting holes, which are used to optimize the inertia distribution of each component; The damping ring is provided with a plurality of inner tooth grooves distributed in the circumferential direction, and a fourth damping friction pair and a fifth damping friction pair at the outer diameter position of the damping ring; The limit pin is provided with a de-weighting ring, which is used to optimize the inertia distribution of each component; The middle spring seat is provided with a waist-shaped hole, a limit pin hole, a first positioning column, a second positioning column, a guide angle, a first limit surface, a second limit surface, and a sliding surface; A sixth damping friction pair is arranged on the damping disc spring seat; The side spring seat is provided with a third positioning column, a third limiting surface, a groove, a supporting surface, and a second reverse damping driving surface; The reverse damping drive plate is provided with a plurality of reverse damping drive angles distributed in the circumferential direction, as well as a seventh damping friction pair and an eighth damping friction pair at the inner diameter position of the reverse damping drive plate.

9. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 1, characterized in that: The multi-plate torque limiter subassembly includes a torque limiting disc spring, a torque limiting disc spring seat, a spline rivet, a spline sleeve, a first flexible plate, a torque limiting friction plate, a torque limiting drive plate, a hollow rivet, a force transmission plate, a bearing ring, a bearing damping plate, a wave spring, and a second flexible plate; a torque limiting friction plate is arranged on each side of the axial position of the first flexible plate and the second flexible plate, and the hollow rivets pass through the rivet holes on the torque limiting friction plate and the rivet holes on the flexible plate respectively, and the two torque limiting friction plates are riveted to the first flexible plate and the second flexible plate respectively, and the heads of the hollow rivets are arranged in the rivet hole countersunk holes on the torque limiting friction plate to form the first torque limiting friction plate assembly and the second torque limiting friction plate assembly.

10. The large-angle multi-plate torque-limiting vibration damper with integrated spring seat according to claim 9, characterized in that: The first torque-limiting friction plate assembly and the second torque-limiting friction plate assembly are arranged on both sides of the axial position of the spline sleeve, a bearing ring is arranged between the spline sleeve and the first torque-limiting friction plate assembly, a bearing damping plate and a wave spring are arranged between the spline sleeve and the second torque-limiting friction plate assembly, the torque-limiting drive plate is arranged between the first torque-limiting friction plate assembly and the second torque-limiting friction plate assembly, and a force transmission plate is arranged in the radial space between the spline sleeve and the torque-limiting drive plate. The inner teeth of the force transmission plate contact with the outer teeth of the spline sleeve to transmit torque, and the outer ring of the force transmission plate and the inner hole clearance of the torque-limiting drive plate are matched for positioning, and the spline rivet passes through the rivet holes on the first flexible plate, the second flexible plate and the force transmission plate respectively to rivet the three together, the torque-limiting disc spring seat is arranged on the other side of the first torque-limiting friction plate assembly, and the torque-limiting disc spring is arranged on the other side of the torque-limiting disc spring seat, thereby forming a multi-plate torque limiter subassembly.

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