Multifunctional torsion-limiting shock absorber with optional damping and rigidity characteristics

Abstract

The utility model discloses a multifunctional torsion-limiting shock absorber with selectable damping and rigidity characteristics, a shock absorber sub-assembly comprises damping structure parts, a first shaft sleeve plate and a steel sheet, the damping structure parts are arranged in an axial space between a second shaft sleeve plate and a cover plate, and the damping structure parts are combined in different ways, so that the rigidity characteristic of the shock absorber can be selected. The torsion-limiting shock absorber can achieve at least three different damping and rigidity characteristics. The torsion-limiting shock absorber assembly has the advantages that through structural design innovation, under the condition that the structure of the torsion-limiting shock absorber assembly is kept unchanged, different shock absorption characteristics are achieved through replaceable damping and rigidity structural parts.

Description

Technical Field

[0001] The utility model relates to the field of a power assembly system of a hybrid vehicle, in particular to a torsion damper with multifunctional damping and optional stiffness characteristics. Background Art

[0002] Torque limiting vibration reduction is mainly used in automobile powertrain systems. It is a component installed between the engine and the gearbox, providing the car with vibration reduction, noise reduction and overload protection functions.

[0003] Currently in hybrid vehicles, due to the use of internal combustion engines, a vibration damper 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 clutch installed between the engine and the gearbox to limit the torque, so a torque-limiting vibration damper is generally installed between the engine and the gearbox.

[0004] Depending on the different configuration requirements of the powertrain, there are different requirements for the damping and stiffness characteristics of the torque limiter. In order to achieve different damping and stiffness characteristics based on the existing space and component structure, it is necessary to design replaceable damping and stiffness structural parts within a specific space to achieve different vibration reduction characteristics.

[0005] CN221647506U discloses a multifunctional torque-limiting damper with selectable damping characteristics. This method utilizes limited space and innovatively designs different combinations of damping structural components. This allows the torque-limiting damper to achieve a variety of damping characteristics while maintaining the same main structure. This application further expands upon this principle by innovatively designing different combinations of damping and stiffness structural components. This allows the torque-limiting damper to achieve at least three different damping and stiffness characteristics while maintaining the same main structure. This provides more vibration damping performance options for different powertrains, which is an area that this application focuses on improving. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a multifunctional torsion damper with optional damping and stiffness characteristics. Through structural design innovation, different vibration reduction characteristics can be achieved through replaceable damping and stiffness structural parts while the structure of the torsion damper assembly remains unchanged.

[0007] In order to solve the above technical problems, the utility model provides a multifunctional torsion limiter with selectable damping and stiffness characteristics. The torsion limiter comprises a torsion limiter subassembly and a shock absorber subassembly.

[0008] The torque limiter subassembly includes a torque limiting friction steel plate, a torque limiting friction plate, a torque limiting cover, a torque limiting cover plate, a torque limiting pressure plate, a torque limiting rivet and a torque limiting disc spring. A friction plate is arranged on each side of the torque limiting friction steel plate, and the two torque limiting friction plates are tightly attached to both sides of the torque limiting friction steel plate. A torque limiting cover plate is arranged on one side of one of the torque limiting friction plates, and a torque limiting pressure plate is arranged on one side of the other torque limiting friction plate; a torque limiting disc spring is arranged on the other side of the torque limiting pressure plate, and a torque limiting cover is arranged on the other side of the torsion limiting disc spring. A plurality of square holes are arranged circumferentially on the torque limiting cover, and a plurality of angled corners are arranged circumferentially on the torque limiting pressure plate, and the angled corners are placed in the square holes; the torque limiting cover and the torque limiting cover plate are riveted together by torque limiting rivets, and by controlling the basin height of the torque limiting cover and the basin height of the torque limiting cover plate, the compressed height of the torsion limiting disc spring generates the designed pressing force, thereby forming the torque limiter subassembly.

[0009] The shock absorber subassembly includes a steel plate, a reverse damping drive plate, an asymmetric damping ring, a bearing ring, a flat pin, a spline sleeve, a large spring, a first shaft sleeve plate, a bearing damping plate, a wave spring, a spring seat, a basic damping plate, a first cross washer, a damping disc spring, a second shaft sleeve plate, a cover plate, a symmetric damping ring, a pre-damping spring, a pre-damping shaft sleeve plate, a forward damping disc spring, a third shaft sleeve plate, a reverse damping cover plate, a controllable reverse damping drive plate, a second cross washer, a reverse damping disc spring and a reverse damping rivet; wherein:

[0010] A first damping friction pair is arranged on the steel sheet;

[0011] The reverse damping drive plate is provided with a reverse damping drive flange, a reverse damping drive angle, a second damping friction pair, and a third damping friction pair;

[0012] The asymmetric damping ring is provided with a first positioning column, a fourth damping friction pair, and a fifth damping friction pair;

[0013] The first shaft sleeve plate is provided with a spring window, a pre-damping window, a second reverse damping driving surface, a first spline tooth, and a seventh damping friction pair;

[0014] The spring seat is provided with positioning ribs, a first reverse damping driving surface, reinforcing ribs, a spring retaining edge, and a boss, and the reinforcing ribs effectively improve the strength of the spring seat parts;

[0015] A sixth damping friction pair is arranged on the basic damping plate;

[0016] The second shaft sleeve plate is provided with a spring window, a pre-damping window, a second reverse damping driving surface, a first spline tooth, and an eighth damping friction pair;

[0017] Rivet holes are arranged on the cover plate;

[0018] The symmetrical damping ring is provided with a second positioning column and a ninth damping friction pair;

[0019] The third shaft sleeve plate is provided with a spring window, a step damping square hole, a second reverse damping driving surface, a second spline tooth, a tenth damping friction pair, and an eleventh damping friction pair;

[0020] The reverse damping cover plate is provided with a twelfth damping friction pair, a thirteenth damping friction pair, a rivet hole, and a flange;

[0021] The controllable reverse damping drive plate is provided with a reverse damping drive flange, a reverse damping drive angle, a fourteenth damping friction pair, a fifteenth damping friction pair, a through hole, and a waist-shaped hole;

[0022] A sixteenth damping friction pair is arranged on the second cross washer.

[0023] The first and second shaft sleeve plates are stacked, with the spring windows and pre-damping windows on the two shaft sleeve plates aligned. Several pre-damping springs are circumferentially arranged in the pre-damping windows of the first and second shaft sleeve plates, and the pre-damping shaft sleeve plate is arranged between the first and second shaft sleeve plates. Several large springs are circumferentially arranged in the spring windows of the first and second shaft sleeve plates, with spring seats arranged on both sides of the large springs. The positioning ribs on the spring seats are clamped on the spring windows of the first and second shaft sleeve plates, and the bosses on the spring seats are arranged in the center holes of the large springs. The large springs are restrained by spring ribs and separated from the shaft sleeve plates by the spring seats to avoid direct metal contact and friction between the large springs and the shaft sleeve plates. The first spline teeth on the first shaft sleeve plate and the second shaft sleeve plate are aligned, and the spline shaft sleeves are arranged therein. Steel sheets and cover plates are arranged on both sides of the first shaft sleeve plate and the second shaft sleeve plate. A bearing ring is arranged between the spline shaft sleeve and the steel sheet. A bearing damping sheet and a wave spring are arranged between the spline shaft sleeve and the cover plate. Damping structural parts are arranged in the axial space between the first shaft sleeve plate and the steel sheet, and between the second shaft sleeve plate and the cover plate. The number of spring windows arranged circumferentially on the steel sheet and the cover plate corresponds to the number of large springs. The steel sheet and the cover plate are riveted together by several flat pins to form a shock absorber subassembly.

[0024] The damping structure parts include a reverse damping drive plate, an asymmetric damping ring, a basic damping plate, a first cross washer, a damping disc spring, a symmetric damping ring, a forward damping disc spring, a reverse damping cover plate, a controllable reverse damping drive plate, a second cross washer, a reverse damping disc spring, and a reverse damping rivet. Through different combinations of these parts, the torsion damper can achieve at least three different damping and stiffness characteristics.

[0025] The damping structure components use a combination of a reverse damping drive plate, an asymmetric damping ring, a basic damping plate, a first cross washer, and a damping disc spring to achieve pre-vibration asymmetric damping characteristics; wherein:

[0026] The reverse damping drive plate is arranged between the steel plate and the first shaft sleeve plate and is close to the steel plate side, the asymmetric damping ring is arranged between the steel plate and the first shaft sleeve plate and is close to the first shaft sleeve plate side, the basic damping plate is arranged between the cover plate and the second shaft sleeve plate and is close to the second shaft sleeve plate side, the damping disc spring is arranged between the cover plate and the second shaft sleeve plate and is close to the cover plate side, and the first cross washer is arranged between the basic damping plate and the damping disc spring;

[0027] During the counterclockwise rotation of the first and second shaft sleeve plates in the compression spring, the damping structural component generates reverse large damping, and the reverse large damping characteristic of the pre-vibration damping asymmetric damping characteristic is a damping torque generated by the relative sliding friction between the first damping friction pair and the third damping friction pair, the second damping friction pair and the fifth damping friction pair, the fourth damping friction pair and the seventh damping friction pair, and the sixth damping friction pair and the eighth damping friction pair;

[0028] During the clockwise rotation of the first shaft sleeve plate and the second shaft sleeve plate when the compression spring is rotated, the damping structural parts generate positive small damping. The positive small damping characteristic of the pre-damping asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the fourth damping friction pair and the seventh damping friction pair, and the sixth damping friction pair and the eighth damping friction pair.

[0029] The damping structure parts use a combination of a symmetrical damping ring, a forward damping disc spring, a reverse damping cover plate, a controllable reverse damping drive plate, a second cross washer, a reverse damping disc spring, and a reverse damping rivet to achieve controllable asymmetric damping characteristics; wherein:

[0030] The symmetrical damping ring is arranged between the steel sheet and the third shaft sleeve plate. The cover plate, the reverse damping cover plate, the controllable reverse damping driving plate, the second cross washer, the reverse damping disc spring, and the reverse damping rivet constitute a controllable reverse damping cover plate assembly. The reverse damping disc spring is arranged between the cover plate and the second cross washer. The controllable reverse damping driving plate is arranged on the other side of the second cross washer. The reverse damping cover plate is arranged on the other side of the controllable reverse damping driving plate. The reverse damping rivet rivets the reverse damping cover plate and the cover plate together.

[0031] The forward damping disc spring is arranged between the controllable reverse damping cover plate assembly and the third shaft sleeve plate. When the third shaft sleeve plate compresses the spring and rotates counterclockwise, the damping structural component generates reverse large damping. The reverse large damping characteristic of the controllable asymmetric damping characteristic is a damping torque generated by the relative sliding friction between the ninth damping friction pair and the tenth damping friction pair, the seventeenth damping friction pair and the twelfth damping friction pair, the thirteenth damping friction pair and the fifteenth damping friction pair, and the fourteenth damping friction pair and the sixteenth damping friction pair.

[0032] During the clockwise rotation of the third shaft sleeve plate compression spring, the damping structural part generates positive small damping, and the positive small damping characteristic of the controllable asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the ninth damping friction pair and the tenth damping friction pair, and the seventeenth damping friction pair and the twelfth damping friction pair.

[0033] The damping structure components use a combination of a symmetrical damping ring, a basic damping plate, a first cross washer, and a damping disc spring to achieve pre-vibration symmetrical damping characteristics; wherein:

[0034] The symmetrical damping ring is arranged between the steel plate and the first shaft sleeve plate, the basic damping plate is arranged between the cover plate and the second shaft sleeve plate and close to the second shaft sleeve plate, the damping disc spring is arranged between the cover plate and the second shaft sleeve plate and close to the cover plate, and the first cross washer is arranged between the basic damping plate and the damping disc spring;

[0035] During the counterclockwise and clockwise rotation of the compression spring of the first shaft sleeve plate and the second shaft sleeve plate, the damping structural parts generate reverse damping and forward damping, and the reverse damping and forward damping are equal. The forward damping characteristic and reverse damping characteristic of the pre-vibration damping symmetrical damping characteristic are the damping torques generated by the relative sliding friction between the ninth damping friction pair and the seventh damping friction pair, and the sixth damping friction pair and the eighth damping friction pair.

[0036] The torque limiter subassembly and the shock absorber subassembly are riveted together by several flat pins to form a torque limiting shock absorber assembly. Four large diameter parts are used in the torque limiter subassembly, namely, the torque limiting friction steel sheet, the torque limiting cover, the torque limiting cover plate, and the torque limiting pressure plate. Five small diameter parts are used in the shock absorber subassembly, namely, the steel sheet, the cover plate, the first shaft sleeve plate, the second shaft sleeve plate, and the third shaft sleeve plate. The outer circular contour of the steel sheet is the same as the inner circular contour of the torque limiting pressure plate, and the material thickness is the same. The outer circular contour of the cover plate is the same as the inner circular contour of the torque limiting friction steel sheet, and the material thickness is the same. The outer circular contours of the first shaft sleeve plate, the second shaft sleeve plate, and the third shaft sleeve plate are smaller than the inner circular contours of the torque limiting cover and the inner circular contours of the torque limiting cover plate, and the material thickness is the same.

[0037] The beneficial effects of the structure of the utility model are:

[0038] 1) This utility model utilizes limited space and innovatively designs different combinations of damping and stiffness structural components. Without changing the main structure, the torsion damper can achieve at least three different damping and stiffness characteristics. These include a pre-damping asymmetric damping characteristic that optimizes the vibration reduction effect under low-power charging conditions, and a controllable asymmetric damping characteristic that optimizes the vibration reduction effect under start-stop and idling conditions.

[0039] 2) The utility model improves the structure of the shock absorber subassembly to rationally utilize the excess raw materials of the torque limiter subassembly, thereby improving material utilization and reducing parts processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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:

[0041] Figure 1 A schematic diagram of a specific embodiment of the present utility model;

[0042] Figure 2 Schematic diagram of the AA section of the pre-vibration asymmetric damping function according to a specific embodiment of the present invention;

[0043] Figure 3 It is an exploded view of a specific embodiment of the utility model;

[0044] Figure 4 Schematic diagram of the AA section of the controllable asymmetric damping function according to a specific embodiment of the present invention;

[0045] Figure 5 It is a schematic diagram of the AA section of the pre-vibration reduction symmetrical damping function according to a specific embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of a shaft sleeve plate A according to a specific embodiment of the present utility model;

[0047] Figure 7 This is a schematic diagram of a shaft sleeve plate B according to a specific embodiment of the present utility model;

[0048] Figure 8 This is a schematic diagram of a spring seat according to a specific embodiment of the present utility model;

[0049] Figure 9 This is a schematic diagram of a reverse damping drive plate according to a specific embodiment of the present utility model;

[0050] Figure 10 This is a schematic diagram of a symmetrical damping ring according to a specific embodiment of the present utility model;

[0051] Figure 11 This is a schematic diagram of a shaft sleeve plate C according to a specific embodiment of the present utility model;

[0052] Figure 12 This is a schematic diagram of an asymmetric damping ring according to a specific embodiment of the present invention;

[0053] Figure 13 This is a schematic diagram of a controllable reverse damping drive plate according to a specific embodiment of the present utility model;

[0054] Figure 14 Schematic diagram of the asymmetric damping characteristics of pre-vibration reduction in a specific embodiment of the present utility model;

[0055] Figure 15 Schematic diagram of the controllable asymmetric damping characteristics of a specific embodiment of the utility model;

[0056] Figure 16 Schematic diagram of the symmetrical damping characteristics of pre-vibration reduction in a specific embodiment of the present utility model;

[0057] Description of the numbers in the figure

[0058] 1-torsion limiting rivet; 2-torsion limiting cover;

[0059] 3-torque limiting friction plate; 4-torque limiting friction steel plate;

[0060] 5- steel sheet; 501- damping friction pair A;

[0061] 6-reverse damping drive plate;

[0062] 601-reverse damping drive flange; 602-reverse damping drive angle;

[0063] 603- Damping friction pair B; 604- Damping friction pair C;

[0064] 7-Asymmetric damping ring;

[0065] 701- positioning column A; 702- damping friction pair D;

[0066] 703-damping friction pair E;

[0067] 8-bearing ring; 9-flat pin;

[0068] 10-spline bushing; 11-large spring;

[0069] 12-shaft sleeve plate A;

[0070] 1201-spring window; 1202-pre-damping window;

[0071] 1203-reverse damping drive surface B; 1204-spline tooth A;

[0072] 1205-damping friction pair G;

[0073] 13-bearing damping plate; 14-wave spring;

[0074] 15-spring seat;

[0075] 1501- positioning rib; 1502- reverse damping driving surface A;

[0076] 1503-reinforcement rib; 1504-spring rib;

[0077] 1505- boss;

[0078] 16-Basic damping plate; 1601-Damping friction pair F

[0079] 17-cross washer A; 18-damping disc spring;

[0080] 19-shaft sleeve plate B;

[0081] 1901-spring window; 1902-pre-damping window;

[0082] 1903-reverse damping driving surface B; 1904-spline tooth A;

[0083] 1905-damping friction pair H;

[0084] 20-cover plate; 2001-rivet hole;

[0085] 21-torsion limiting pressure plate; 22-torsion limiting disc spring;

[0086] 23-twist-limiting cover;

[0087] 24- symmetrical damping ring;

[0088] 2401- Positioning column B; 2402- Damping friction pair I;

[0089] 25-pre-vibration damping spring; 26-pre-vibration damping shaft sleeve plate;

[0090] 27-Forward damping disc spring; 2701-Damping friction pair Q;

[0091] 28-shaft sleeve plate C;

[0092] 2801-spring window; 2802-step damping square hole;

[0093] 2803-reverse damping driving surface B; 2804-spline tooth B;

[0094] 2805- Damping friction pair J; 2806- Damping friction pair K;

[0095] 29-reverse damping cover;

[0096] 2901- Damping friction pair L; 2902- Damping friction pair M;

[0097] 2903-Rivet hole; 2904-Flanged edge;

[0098] 30-controllable reverse damping drive plate;

[0099] 3001-Reverse damping drive flange; 3002-Reverse damping drive angle;

[0100] 3003- Damping friction pair N; 3004- Damping friction pair O;

[0101] 3005-through hole; 3006-waist hole;

[0102] 31-cross washer B; 3101-damping friction pair P;

[0103] 32-Reverse damping disc spring; 33-Reverse damping rivet. DETAILED DESCRIPTION

[0104] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0105] Figure 1 A schematic diagram showing a specific embodiment of the present utility model is shown; Figure 2 A schematic diagram showing the AA section of the pre-vibration asymmetric damping function of a specific embodiment of the present invention is shown; Figure 3 An exploded view of a specific embodiment of the present invention is shown; Figure 4 A schematic diagram showing a cross section of the controllable asymmetric damping function AA of a specific embodiment of the present invention is shown; Figure 5 A schematic diagram showing the AA section of the pre-vibration reduction symmetrical damping function of a specific embodiment of the present utility model is shown; Figure 6 A schematic diagram of a shaft sleeve plate A according to a specific embodiment of the present invention is shown; Figure 7 A schematic diagram of a shaft sleeve plate B according to a specific embodiment of the present invention is shown; Figure 8 A schematic diagram of a spring seat according to a specific embodiment of the present invention is shown; Figure 9 A schematic diagram of a reverse damping drive plate according to a specific embodiment of the present utility model is shown; Figure 10 A schematic diagram of a symmetrical damping ring according to a specific embodiment of the present invention is shown; Figure 11 A schematic diagram of a shaft sleeve plate C according to a specific embodiment of the present utility model is shown; Figure 12 A schematic diagram of an asymmetric damping ring according to a specific embodiment of the present invention is shown; Figure 13 A schematic diagram of a controllable reverse damping drive plate according to a specific embodiment of the present utility model is shown; Figure 14 A schematic diagram showing the asymmetric damping characteristics of pre-vibration reduction according to a specific embodiment of the present invention is shown; Figure 15 A schematic diagram showing the controllable asymmetric damping characteristics of a specific embodiment of the present utility model is shown; Figure 16 A schematic diagram showing the symmetrical damping characteristics of pre-vibration reduction in a specific embodiment of the present utility model is shown.

[0106] like Figure 1-Figure 3 As shown, the utility model provides a multifunctional torque limiter with selectable damping and stiffness characteristics, including a torque limiter sub-assembly and a shock absorber sub-assembly.

[0107] The torque limiter subassembly includes a torque-limiting friction steel plate 4, a torque-limiting friction plate 3, a torque-limiting cover 23, a torque-limiting cover plate 2, a torque-limiting pressure plate 21, a torque-limiting rivet 1, and a torque-limiting disc spring 22. A torque-limiting friction plate 3 is disposed on each side of the torque-limiting friction steel plate 4. The two torque-limiting friction plates 3 are closely attached to the two sides of the torque-limiting friction steel plate 4. The torque-limiting cover 2 is disposed on one side of one of the torque-limiting friction plates 3, and the torque-limiting pressure plate 21 is disposed on one side of the other of the torque-limiting friction plate 3. The torque-limiting disc spring 22 is disposed on the other side of the torque-limiting pressure plate 21, and the torque-limiting cover 23 is disposed on the other side of the torque-limiting disc spring 22. Multiple square holes are circumferentially arranged on the torque-limiting cover 23, and multiple angled corners are disposed circumferentially on the torque-limiting pressure plate 21, each of which is placed in the square holes. The torque limiter cover 23 and the torque limiter cover plate 2 are riveted together by the torque limiter rivet 1. By controlling the basin height of the torque limiter cover 23 and the basin height of the torque limiter cover plate 2, the compression height of the torque limiter disc spring 22 generates the required compression force, thereby forming the torque limiter subassembly.

[0108] The shock absorber sub-assembly includes a steel plate 5, a reverse damping drive plate 6, an asymmetric damping ring 7, a bearing ring 8, a flat pin 9, a spline sleeve 10, a large spring 11, a sleeve plate A12, a bearing damping plate 13, a wave spring 14, a spring seat 15, a basic damping plate 16, a cross washer A17, a damping disc spring 18, a sleeve plate B19, a cover plate 20, a symmetrical damping ring 24, a pre-damping spring 25, a pre-damping sleeve plate 26, a forward damping disc spring 27, a sleeve plate C28, a reverse damping cover plate 29, a controllable reverse damping drive plate 30, a cross washer B31, a reverse damping disc spring 32, and a reverse damping rivet 33.

[0109] like Figure 2 As shown, a damping friction pair A501 is arranged on the steel sheet 5 .

[0110] like Figure 9 As shown, the reverse damping drive plate 6 is provided with a reverse damping drive flange 601 , a reverse damping drive angle 602 , a damping friction pair B 603 , and a damping friction pair C 604 .

[0111] like Figure 12 As shown, the asymmetric damping ring 7 is provided with a positioning column A701, a damping friction pair D702, and a damping friction pair E703.

[0112] like Figure 6 As shown, the shaft sleeve plate A12 is provided with a spring window 1201 , a pre-vibration damping window 1202 , a reverse damping driving surface B1203 , a spline tooth A1204 , and a damping friction pair G1205 .

[0113] like Figure 8As shown, the spring seat 15 is provided with a positioning rib 1501 , a reverse damping driving surface A 1502 , a reinforcing rib 1503 , a spring retaining edge 1504 , and a boss 1505 . The reinforcing rib 1503 effectively improves the strength of the spring seat 15 .

[0114] like Figure 2 As shown, a damping friction pair F1601 is arranged on the basic damping plate 16;

[0115] like Figure 7 As shown, the shaft sleeve plate B19 is provided with a spring window 1901 , a pre-vibration damping window 1902 , a reverse damping driving surface B1903 , spline teeth 1904 , and a damping friction pair H1905 .

[0116] like Figure 3 As shown, rivet holes 2001 are arranged on the cover plate 20 .

[0117] like Figure 10 As shown, the symmetrical damping ring 24 is provided with a positioning column B2401 and a damping friction pair I2402.

[0118] like Figure 11 As shown, the shaft sleeve plate C28 is provided with a spring window 2801 , a step damping square hole 2802 , a reverse damping driving surface B2803 , a spline tooth B2804 , a damping friction pair J2805 , and a damping friction pair K2806 .

[0119] like Figure 3 and Figure 4 As shown, the reverse damping cover plate 29 is provided with a damping friction pair L2901 , a damping friction pair M2902 , a rivet hole 2903 , and a flange 2904 .

[0120] like Figure 13 As shown, the controllable reverse damping driving plate 30 is provided with a reverse damping driving flange 3001 , a reverse damping driving angle 3002 , a damping friction pair N 3003 , a damping friction pair O 3004 , a through hole 3005 , and a waist-shaped hole 3006 .

[0121] like Figure 4 As shown, a damping friction pair P3101 is arranged on the cross washer B31.

[0122] The shaft sleeve plate A12 and the shaft sleeve plate B19 are stacked, and the spring windows 1201 and the spring window 1901, and the pre-vibration damping window 1202 and the pre-vibration damping window 1902 on the two shaft sleeve plates are aligned at the same time. Several pre-vibration damping springs 25 are circumferentially arranged in the pre-vibration damping windows of the shaft sleeve plate A12 and the shaft sleeve plate B19, and the pre-vibration damping shaft sleeve plate 26 is arranged between the shaft sleeve plate A12 and the shaft sleeve plate B19. Several large springs 11 are arranged circumferentially in the spring windows of the shaft sleeve plate A12 and the shaft sleeve plate B19. Spring seats 15 are arranged on both sides of the large spring 11. The positioning ribs 1501 on the spring seat 15 are clamped on the spring windows of the shaft sleeve plate A12 and the shaft sleeve plate B19. The boss 1505 on the spring seat 15 is arranged in the center hole of the large spring 11. At the same time, the large spring 11 is constrained by the spring retaining edge 1504, and the large spring 11 is separated from the shaft sleeve plate by the spring seat 15 to avoid direct metal contact friction between the large spring 11 and the shaft sleeve plate. The spline teeth A1204 and the spline teeth 1904 on the sleeve plates A12 and B19 are aligned, and the spline sleeves 10 are arranged inside. The steel sheets 5 and the cover plates 20 are arranged on both sides of the sleeve plates A12 and B19. The bearing ring 8 is arranged between the spline sleeve 10 and the steel sheet 5. The bearing damping plate 13 and the wave spring 14 are arranged between the spline sleeve 10 and the cover plate 20. The damping structural parts are arranged in the axial space between the sleeve plate A12 and the steel sheet 5, and between the sleeve plate B19 and the cover plate 20. The number of spring windows arranged circumferentially on the steel sheet 5 and the cover plate 20 corresponds to the number of large springs 11. The steel sheet 5 and the cover plate 20 are riveted together by several flat pins 9 to form a shock absorber subassembly.

[0123] The damping structural parts include a reverse damping drive plate 6, an asymmetric damping ring 7, a basic damping plate 16, a cross washer A17, a damping disc spring 18, a symmetric damping ring 24, a forward damping disc spring 27, a reverse damping cover plate 29, a controllable reverse damping drive plate 30, a cross washer B31, a reverse damping disc spring 32, and a reverse damping rivet 33. Through different combinations of these damping structural parts, the torsion damper can achieve at least three different damping characteristics and stiffness characteristics.

[0124] like Figure 2 As shown, when the damping structure parts use the reverse damping drive plate 6, the asymmetric damping ring 7, the basic damping plate 16, the cross washer A17, and the damping disc spring 18, the damping Figure 14The pre-damping asymmetric damping characteristics shown in the figure can optimize the vibration reduction effect of low-power charging conditions; the reverse damping drive plate 6 is arranged between the steel plate 5 and the shaft sleeve plate A12 and close to the side of the steel plate 5, the asymmetric damping ring 7 is arranged between the steel plate 5 and the shaft sleeve plate A12 and close to the side of the shaft sleeve plate A12, the positioning column A701 is arranged in the inner ring hole of the steel plate 5, the basic damping plate 16 is arranged between the cover plate 20 and the shaft sleeve plate B19 and close to the side of the shaft sleeve plate B19, the damping disc spring 18 is arranged between the cover plate 20 and the shaft sleeve plate B19 and close to the side of the cover plate 20, the cross washer A17 is arranged between the basic damping plate 16 and the damping disc spring 18, when the shaft sleeve plate A12 and the shaft sleeve plate B19 compress the spring in the counterclockwise direction, the damping structure parts generate reverse damping, and during the process, the reverse damping drive surface B1203 and the reverse The forward damping drive surface B1903 contacts the reverse damping drive flange 601 at the same time, and the shaft sleeve plate A12 and the shaft sleeve plate B19 drive the reverse damping drive plate 6 to rotate; during the return stroke, the reverse damping drive surface A1502 contacts the reverse damping drive angle 602, and the spring seat 15 drives the reverse damping drive plate 6 to rotate; the shaft sleeve plate A12 and the asymmetric damping ring 7, and the shaft sleeve plate B19 and the basic damping plate 16 always generate sliding friction during the forward and return strokes. The reverse large damping characteristic of the pre-damping asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the damping friction pair A501 and the damping friction pair C604, the damping friction pair B603 and the damping friction pair E703, the damping friction pair D702 and the damping friction pair G1205, and the damping friction pair F1601 and the damping friction pair H1905. When the shaft sleeve plate A12 and the shaft sleeve plate B19 rotate clockwise with the compression spring, sliding friction is always generated between the shaft sleeve plate A12 and the asymmetric damping ring 7, and between the shaft sleeve plate B19 and the basic damping plate 16 during the forward and return strokes. The positive small damping characteristic of the pre-damping asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the damping friction pair D702 and the damping friction pair G1205, and the damping friction pair F1601 and the damping friction pair H1905.

[0125] like Figure 4 As shown, when the damping structure parts use a symmetrical damping ring 24, a forward damping disc spring 27, a reverse damping cover plate 29, a controllable reverse damping drive plate 30, a cross washer B31, a reverse damping disc spring 32, and a reverse damping rivet 33, the damping structure is realized. Figure 15The controllable asymmetric damping characteristics shown in the figure can achieve the optimized start-stop and idling vibration reduction effect; the parts that realize the pre-vibration reduction stiffness characteristics, such as the shaft sleeve plate A12, the shaft sleeve plate B19, the pre-vibration reduction spring 25, and the pre-vibration reduction shaft sleeve plate 26 are replaced with the shaft sleeve plate C28, the symmetrical damping ring 24 is arranged between the steel sheet 5 and the shaft sleeve plate C28, and the positioning column B2401 is arranged in the inner ring hole of the steel sheet 5; the cover plate 20, the reverse damping cover plate 29, the controllable reverse damping drive plate 30, the cross washer B31, the reverse damping disc spring 32, and the reverse damping rivet 33 form a controllable reverse damping plate. Controlled reverse damping cover plate assembly, reverse damping disc spring 32 is arranged between cover plate 20 and cross washer B31, controllable reverse damping drive plate 30 is arranged on the other side of cross washer B31, reverse damping cover plate 29 is arranged on the other side of controllable reverse damping drive plate 30, flange 2904 passes through through hole 3005, reverse damping rivet 33 passes through rivet hole 2903 and rivet hole 2001 to rivet reverse damping cover plate 29 and cover plate 20; forward damping disc spring 27 is arranged between controllable reverse damping cover plate assembly and shaft sleeve plate C28, when shaft sleeve plate C28 During the counterclockwise rotation of the compression spring, the damping structure parts generate reverse damping. During the forward stroke, the reverse damping driving surface B2803 contacts the reverse damping driving flange 3001, and the shaft sleeve plate C28 drives the controllable reverse damping driving plate 30 to rotate. The flange 2904 moves in the space of the waist-shaped hole 3006. During the return stroke, the reverse damping driving surface A1502 contacts the reverse damping driving angle 3002, and the spring seat 15 drives the controllable reverse damping driving plate 30 to rotate. The flange 2904 moves in the space of the waist-shaped hole 3006. The shaft sleeve plate C2 8 and the symmetrical damping ring 24 always generate sliding friction during the forward and return strokes, and the forward damping disc spring 27 and the reverse damping cover plate 29 always generate sliding friction during the forward and return strokes. The reverse large damping characteristic of the controllable asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the damping friction pair I2402 and the damping friction pair J2805, the damping friction pair Q2701 and the damping friction pair L2901, the damping friction pair M2902 and the damping friction pair O3004, and the damping friction pair N3003 and the damping friction pair P3101. When the shaft sleeve plate C28 compresses the spring and rotates clockwise, sliding friction is always generated between the shaft sleeve plate C28 and the symmetrical damping ring 24, the forward damping disc spring 27 and the reverse damping cover plate 29 during the forward and return strokes. The positive small damping characteristic of the controllable asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the damping friction pair I2402 and the damping friction pair J2805, and the damping friction pair Q2701 and the damping friction pair L2901.

[0126] like Figure 5 As shown, when the damping structure parts use symmetrical damping ring 24, basic damping plate 16, cross washer A17, damping disc spring 18, the damping structure parts are Figure 16The pre-damping symmetrical damping characteristics shown in the figure are as follows: the symmetrical damping ring 24 is arranged between the steel plate 5 and the shaft sleeve plate A12; the positioning column B2401 is arranged in the inner ring hole of the steel plate 5; the basic damping plate 16 is arranged between the cover plate 20 and the shaft sleeve plate B19 and close to the side of the shaft sleeve plate B19; the damping disc spring 18 is arranged between the cover plate 20 and the shaft sleeve plate B19 and close to the side of the cover plate 20; the cross washer A17 is arranged between the basic damping plate 16 and the damping disc spring 18; when the shaft sleeve plate A12 and the shaft sleeve plate B19 are rotated counterclockwise During the rotation of the compression spring in the clockwise direction, the damping structure parts generate reverse and forward damping, and the reverse and forward damping are equal. The shaft sleeve plate A12 and the symmetrical damping ring 24, and the shaft sleeve plate B19 and the basic damping plate 16 always generate sliding friction during the forward and return strokes. The forward and reverse damping characteristics of the pre-vibration damping symmetrical damping characteristics are the damping torque generated by the relative sliding friction between the damping friction pair I2402 and the damping friction pair G1205, and the damping friction pair F1601 and the damping friction pair H1905.

[0127] The torque limiter subassembly and the shock absorber subassembly are riveted together by several flat pins 9 to form a torque limiting shock absorber assembly. Four parts with large diameters are used in the torque limiter subassembly, namely, the torque limiting friction steel sheet 4, the torque limiting cover 23, the torque limiting cover plate 2, and the torque limiting pressure plate 21. Five parts with small diameters are used in the shock absorber subassembly, namely, the steel sheet 5, the cover plate 20, the shaft sleeve plate A12, the shaft sleeve plate B19, and the shaft sleeve plate C28. The outer circle contour of the steel sheet 5 is the same as the inner circle contour of the torque limiting pressure plate 21, and the material thickness is the same. The outer circle contour of the cover plate 20 is the same as the inner circle contour of the torque limiting friction steel sheet 4, and the material thickness is the same. The outer circle contours of the shaft sleeve plate A12, the shaft sleeve plate B19, and the shaft sleeve plate C28 are smaller than the inner circle contours of the torque limiting cover 23 and the inner circle contours of the torque limiting cover plate 2, and the material thickness is the same.

[0128] 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 multifunctional torque limiter with selectable damping and stiffness characteristics, comprising a torque limiter subassembly and a shock absorber subassembly, characterized in that: The shock absorber subassembly includes damping structural parts, steel sheets, bearing rings, spline sleeves, large springs, first sleeve plates, bearing damping sheets, wave springs, spring seats, second sleeve plates, cover plates, pre-damping springs, pre-damping sleeve plates, and third sleeve plates; wherein: The damping structural parts include a reverse damping drive plate, an asymmetric damping ring, a basic damping plate, a first cross washer, a damping disc spring, a symmetric damping ring, a forward damping disc spring, a reverse damping cover plate, a controllable reverse damping drive plate, a second cross washer, a reverse damping disc spring, and a reverse damping rivet; The first shaft sleeve plate and the second shaft sleeve plate are stacked, and several pre-vibration damping springs are circumferentially arranged in the pre-vibration damping windows of the first shaft sleeve plate and the second shaft sleeve plate. The pre-vibration damping shaft sleeve plate is arranged between the first shaft sleeve plate and the second shaft sleeve plate. Several large springs are circumferentially arranged in the spring windows of the first shaft sleeve plate and the second shaft sleeve plate. Spring seats are arranged on both sides of the large springs. The positioning ribs on the spring seats are clamped on the spring windows of the first shaft sleeve plate and the second shaft sleeve plate. The spline teeth on the first shaft sleeve plate and the second shaft sleeve plate are aligned, and spline sleeves are arranged therein. Steel sheets and cover plates are arranged on both sides of the first shaft sleeve plate and the second shaft sleeve plate. A bearing ring is arranged between the spline sleeve and the steel sheet. A bearing damping sheet and a wave spring are arranged between the spline sleeve and the cover plate. The damping structural parts are arranged in the axial space between the first shaft sleeve plate and the steel sheet, and between the second shaft sleeve plate and the cover plate. Through different combinations of the damping structural parts, the torsion damper can achieve at least three different damping and stiffness characteristics.

2. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The spring windows and pre-damping windows on the first shaft sleeve plate and the second shaft sleeve plate are aligned at the same time, the boss on the spring seat is arranged in the center hole of the large spring, the spring rib of the spring seat constrains the large spring, and the spring seat separates the large spring from the shaft sleeve plate. The number of spring windows arranged circumferentially on the steel sheet and the cover plate corresponds to the number of large springs, and the steel sheet and the cover plate are riveted by several flat pins.

3. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The damping structure components use a combination of a reverse damping drive plate, an asymmetric damping ring, a basic damping plate, a first cross washer, and a damping disc spring to achieve pre-vibration asymmetric damping characteristics; wherein: The reverse damping drive plate is arranged between the steel plate and the first shaft sleeve plate and is close to the steel plate side, the asymmetric damping ring is arranged between the steel plate and the first shaft sleeve plate and is close to the first shaft sleeve plate side, the basic damping plate is arranged between the cover plate and the second shaft sleeve plate and is close to the second shaft sleeve plate side, the damping disc spring is arranged between the cover plate and the second shaft sleeve plate and is close to the cover plate side, and the first cross washer is arranged between the basic damping plate and the damping disc spring; During the counterclockwise rotation of the first and second shaft sleeve plates in the compression spring, the damping structural component generates reverse large damping, and the reverse large damping characteristic of the pre-vibration damping asymmetric damping characteristic is a damping torque generated by the relative sliding friction between the first damping friction pair and the third damping friction pair, the second damping friction pair and the fifth damping friction pair, the fourth damping friction pair and the seventh damping friction pair, and the sixth damping friction pair and the eighth damping friction pair; During the clockwise rotation of the first shaft sleeve plate and the second shaft sleeve plate when the compression spring is rotated, the damping structural parts generate positive small damping. The positive small damping characteristic of the pre-damping asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the fourth damping friction pair and the seventh damping friction pair, and the sixth damping friction pair and the eighth damping friction pair.

4. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The damping structure parts use a combination of a symmetrical damping ring, a forward damping disc spring, a reverse damping cover plate, a controllable reverse damping drive plate, a second cross washer, a reverse damping disc spring, and a reverse damping rivet to achieve controllable asymmetric damping characteristics; wherein: The symmetrical damping ring is arranged between the steel sheet and the third shaft sleeve plate. The cover plate, the reverse damping cover plate, the controllable reverse damping driving plate, the second cross washer, the reverse damping disc spring, and the reverse damping rivet constitute a controllable reverse damping cover plate assembly. The reverse damping disc spring is arranged between the cover plate and the second cross washer. The controllable reverse damping driving plate is arranged on the other side of the second cross washer. The reverse damping cover plate is arranged on the other side of the controllable reverse damping driving plate. The reverse damping rivet rivets the reverse damping cover plate and the cover plate together. The forward damping disc spring is arranged between the controllable reverse damping cover plate assembly and the third shaft sleeve plate. When the third shaft sleeve plate compresses the spring and rotates counterclockwise, the damping structural component generates reverse large damping. The reverse large damping characteristic of the controllable asymmetric damping characteristic is a damping torque generated by the relative sliding friction between the ninth damping friction pair and the tenth damping friction pair, the seventeenth damping friction pair and the twelfth damping friction pair, the thirteenth damping friction pair and the fifteenth damping friction pair, and the fourteenth damping friction pair and the sixteenth damping friction pair. During the clockwise rotation of the third shaft sleeve plate compression spring, the damping structural part generates positive small damping, and the positive small damping characteristic of the controllable asymmetric damping characteristic is the damping torque generated by the relative sliding friction between the ninth damping friction pair and the tenth damping friction pair, and the seventeenth damping friction pair and the twelfth damping friction pair.

5. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The damping structure components use a combination of a symmetrical damping ring, a basic damping plate, a first cross washer, and a damping disc spring to achieve pre-vibration symmetrical damping characteristics; wherein: The symmetrical damping ring is arranged between the steel plate and the first shaft sleeve plate, the basic damping plate is arranged between the cover plate and the second shaft sleeve plate and close to the second shaft sleeve plate, the damping disc spring is arranged between the cover plate and the second shaft sleeve plate and close to the cover plate, and the first cross washer is arranged between the basic damping plate and the damping disc spring; During the counterclockwise and clockwise rotation of the compression spring of the first shaft sleeve plate and the second shaft sleeve plate, the damping structural parts generate reverse damping and forward damping, and the reverse damping and forward damping are equal. The forward damping characteristic and reverse damping characteristic of the pre-vibration damping symmetrical damping characteristic are the damping torques generated by the relative sliding friction between the ninth damping friction pair and the seventh damping friction pair, and the sixth damping friction pair and the eighth damping friction pair.

6. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The torque limiter subassembly includes a torque limiting friction steel plate, a torque limiting friction plate, a torque limiting cover, a torque limiting cover plate, a torque limiting pressure plate, a torque limiting rivet and a torque limiting disc spring; a friction plate is arranged on each side of the torque limiting friction steel plate, and the two torque limiting friction plates are tightly attached to the two sides of the torque limiting friction steel plate, a torque limiting cover plate is arranged on one side of one of the torque limiting friction plates, and a torque limiting pressure plate is arranged on one side of the other torque limiting friction plate; a torque limiting disc spring is arranged on the other side of the torque limiting pressure plate, and a torque limiting cover is arranged on the other side of the torsion limiting disc spring, a plurality of square holes are arranged circumferentially on the torque limiting cover, a plurality of angled corners are arranged circumferentially on the torque limiting pressure plate, and the angled corners are placed in the square holes; the torque limiting cover and the torque limiting cover plate are riveted together by torque limiting rivets to form the torque limiter subassembly.

7. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 6, characterized in that: The basin height of the torsion limiting cover and the basin height of the torsion limiting cover plate are controlled so that the compressed height of the torsion limiting disc spring generates the pressing force required by the design.

8. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The torque limiter sub-assembly and the shock absorber sub-assembly are riveted together by a plurality of flat pins to form a torque limiter shock absorber assembly.

9. The multifunctional limited torque vibration damper with selectable damping and stiffness characteristics according to any one of claims 1 to 8, characterized in that: The outer circle contour of the steel sheet is the same as the inner circle contour of the torque limiting pressure plate, and the material thickness is the same; the outer circle contour of the cover plate is the same as the inner circle contour of the torque limiting friction steel sheet, and the material thickness is the same; the outer circle contours of the first shaft sleeve plate, the second shaft sleeve plate, and the third shaft sleeve plate are smaller than the inner circle contours of the torque limiting cover and the torque limiting cover plate, and the material thickness is the same.

10. The multifunctional limited torque vibration absorber with selectable damping and stiffness characteristics according to any one of claims 1 to 8, characterized in that: A first damping friction pair is arranged on the steel sheet; The reverse damping drive plate is provided with a reverse damping drive flange, a reverse damping drive angle, a second damping friction pair, and a third damping friction pair; The asymmetric damping ring is provided with a first positioning column, a fourth damping friction pair, and a fifth damping friction pair; The first shaft sleeve plate is provided with a spring window, a pre-damping window, a second reverse damping driving surface, a first spline tooth, and a seventh damping friction pair; The spring seat is provided with a positioning rib, a first reverse damping driving surface, a reinforcing rib, a spring retaining edge, and a boss; A sixth damping friction pair is arranged on the basic damping plate; The second shaft sleeve plate is provided with a spring window, a pre-damping window, a second reverse damping driving surface, a first spline tooth, and an eighth damping friction pair; Rivet holes are arranged on the cover plate; The symmetrical damping ring is provided with a second positioning column and a ninth damping friction pair; The third shaft sleeve plate is provided with a spring window, a step damping square hole, a second reverse damping driving surface, a second spline tooth, a tenth damping friction pair, and an eleventh damping friction pair; The reverse damping cover plate is provided with a twelfth damping friction pair, a thirteenth damping friction pair, a rivet hole, and a flange; The controllable reverse damping drive plate is provided with a reverse damping drive flange, a reverse damping drive angle, a fourteenth damping friction pair, a fifteenth damping friction pair, a through hole, and a waist-shaped hole; A sixteenth damping friction pair is arranged on the second cross washer.

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