Multifunctional torsion-limiting shock absorber with optional damping and rigidity characteristics
By designing a combination of multiple damping and stiffness structural parts, the versatility of the torsion-limiting vibration damper is achieved, solving the problem that it is difficult to meet the needs of different powertrains in the prior art, and optimizing the vibration damping effect and material utilization.
Patent Information
- Application Number
- CN202411471016.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-01-10
AI Technical Summary
Existing limited torsional shock absorbers are difficult to achieve a variety of damping and stiffness characteristics in hybrid vehicles, and cannot meet the needs of different powertrain configurations.
By designing different combinations of damping and stiffness structural components, including torque limiter subassemblies and vibration damper subassemblies, using friction steel sheets, friction sheets, cover plates, press plates, disc springs, damping drive plates, asymmetric damping rings , bearing ring and other parts, to achieve the optionality of at least three damping characteristics and stiffness characteristics.
In a limited space, the versatility of the torque-limiting vibration damper is achieved, the vibration damping effect of low-power charging conditions and start-stop conditions is optimized, material utilization is improved, and parts processing costs are reduced.
Smart Images
Figure CN119289038A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of powertrain systems of hybrid electric vehicles, and in particular to a torque limiting vibration 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 to provide the car with vibration reduction, noise reduction and overload protection functions.
[0003] Currently in hybrid vehicles, due to the use of internal combustion engines, vibration dampers 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, so a torque-limiting vibration damper is generally installed between the engine and the gearbox.
[0004] According to 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 parts structure, it is necessary to design replaceable damping and stiffness structural parts in a specific space to achieve different vibration reduction characteristics.
[0005] CN221647506U discloses a multifunctional torque-limited vibration damper with optional damping characteristics, and its implementation method is to innovatively design different damping structure parts combinations through limited space, so that the torque-limited vibration damper can achieve multiple damping characteristics without changing the main structure. The present application further extends on this basis, innovatively designs different damping and stiffness structure parts combinations, so that the torque-limited vibration damper can further achieve at least three different damping and stiffness characteristics without changing the main structure, and provides more optional vibration reduction performance solutions for different powertrains, which is the focus of the present application. Summary of the invention
[0006] The technical problem to be solved by the present invention is to provide a multifunctional torque-limited vibration damper with optional damping and stiffness characteristics. Through structural design innovation, different vibration damping characteristics can be achieved through replaceable damping and stiffness structural parts while the structure of the torque-limited vibration damper assembly remains unchanged.
[0007] In order to solve the above technical problems, the present invention provides a multifunctional torsion limiter with selectable damping and stiffness characteristics. The torsion limiter comprises a torsion limiter sub-assembly and a shock absorber sub-assembly.
[0008] The torque limiter sub-assembly comprises a torque limiting friction steel sheet, a torque limiting friction sheet, 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 sheet is arranged on each side of the torque limiting friction steel sheet, and the two torque limiting friction sheets are closely attached to the two sides of the torque limiting friction steel sheet. A torque limiting cover plate is arranged on one side of one of the torque limiting friction sheets, and a torque limiting pressure plate is arranged on one side of the other torque limiting friction sheet; 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 the compression height of the torque limiting disc spring generates the required pressing force by design by controlling the basin height of the torque limiting cover and the basin height of the torque limiting cover plate, thereby forming the torque limiter sub-assembly.
[0009] The shock absorber sub-assembly includes a steel sheet, a reverse damping drive plate, an asymmetric damping ring, a bearing ring, a flat pin, a spline sleeve, a large spring, a first 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 sleeve plate, a cover plate, a symmetric damping ring, a pre-damping spring, a pre-damping sleeve plate, a forward damping disc spring, a third 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: 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 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; 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; The cover plate is provided with rivet holes; 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 driving plate is provided with a reverse damping driving flange, a reverse damping driving angle, a fourteenth damping friction pair, a fifteenth damping friction pair, a through hole, and a waist-shaped hole; The sixteenth damping friction pair is arranged on the second cross washer.
[0010] The first shaft sleeve plate and the second shaft sleeve plate are stacked, the spring windows and pre-vibration damping windows on the two shaft sleeve plates are aligned at the same time, 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, and 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 boss on the spring seat is arranged in the center hole of the large spring, and the large spring is constrained by the spring retaining edge, and the large spring is separated from the shaft sleeve plate by the spring seat to avoid direct metal contact friction between the large spring and the shaft sleeve plate. 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 circumferentially arranged 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 sub-assembly.
[0011] 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. Through different combinations of these parts, the torsion damper can achieve at least three different damping and stiffness characteristics.
[0012] The damping structural parts 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 sheet and the first shaft sleeve plate and close to the steel sheet side, the asymmetric damping ring is arranged between the steel sheet and the first shaft sleeve plate and 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 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 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 compression spring of the first shaft sleeve plate and the second shaft sleeve plate, the damping structural part generates reverse large damping, and the reverse large damping characteristic of the pre-damping asymmetric damping characteristic is the 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 compression spring, the damping structural parts generate positive small damping, and 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.
[0013] The damping structural 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, and the reverse damping rivet rivets the reverse damping cover plate and the cover plate; 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 counterclockwise to rotate, the damping structural part 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.
[0014] The damping structural parts 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 sheet and the first shaft sleeve plate, the basic damping sheet 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 sheet 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.
[0015] The torque limiter sub-assembly and the shock absorber sub-assembly are riveted together by several flat pins to form a torque limiting shock absorber assembly. Four parts with large diameters are used in the torque limiter sub-assembly, namely, a torque limiting friction steel sheet, a torque limiting cover, a torque limiting cover plate, and a torque limiting pressure plate. Five parts with small diameters are used in the shock absorber sub-assembly, namely, a steel sheet, a cover plate, a first shaft sleeve plate, a second shaft sleeve plate, and a 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.
[0016] The beneficial effects of the structure of the present invention are: 1) The present invention innovatively designs different damping and stiffness structural component combinations in a limited space. Under the condition that the main structure remains unchanged, the torque limiting vibration damper can realize at least three different damping and stiffness characteristics, so as to realize the pre-vibration damping asymmetric damping characteristics for optimizing the vibration damping effect of low-power charging conditions and the controllable asymmetric damping characteristics for optimizing the vibration damping effect of start-stop and idling conditions; 2) The present invention improves the structure of the shock absorber sub-assembly to reasonably utilize the excess raw materials of the torque limiter sub-assembly, thereby improving material utilization and reducing parts processing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is a schematic diagram of a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the AA section of the pre-vibration asymmetric damping function according to a specific embodiment of the present invention; Figure 3 An exploded view of a specific embodiment of the present invention; Figure 4 It is a schematic diagram of the AA section of the controllable asymmetric damping function according to a specific embodiment of the present invention; 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; Figure 6 It is a schematic diagram of a shaft sleeve plate A according to a specific embodiment of the present invention; Figure 7 It is a schematic diagram of a shaft sleeve plate B according to a specific embodiment of the present invention; Figure 8 It is a schematic diagram of a spring seat according to a specific embodiment of the present invention; Fig. 9 It is a schematic diagram of a reverse damping driving plate according to a specific embodiment of the present invention; Fig.10 is a schematic diagram of a symmetrical damping ring according to a specific embodiment of the present invention; Fig.11 It is a schematic diagram of a shaft sleeve plate C according to a specific embodiment of the present invention; Fig.12 is a schematic diagram of an asymmetric damping ring according to a specific embodiment of the present invention; Fig.13 It is a schematic diagram of a controllable reverse damping driving plate according to a specific embodiment of the present invention; Fig.14 It is a schematic diagram of the asymmetric damping characteristics of pre-vibration reduction in a specific embodiment of the present invention; Fig.15 It is a schematic diagram of the controllable asymmetric damping characteristics of a specific embodiment of the present invention; Fig.16 It is a schematic diagram of the symmetrical damping characteristics of pre-vibration reduction in a specific embodiment of the present invention; Description of the symbols in the figure 1-torsion limiting rivet; 2-torsion limiting cover plate; 3-torsion limiting friction plate; 4-torsion limiting friction steel plate; 5- steel sheet; 501- damping friction pair A; 6-reverse damping drive plate; 601-reverse damping drive flange; 602-reverse damping drive angle; 603- Damping friction pair B; 604- Damping friction pair C; 7-Asymmetric damping ring; 701- positioning column A; 702- damping friction pair D; 703- Damping friction pair E; 8-bearing ring; 9-flat pin; 10-spline bushing; 11-large spring; 12-shaft sleeve plate A; 1201- spring window; 1202- pre-damping window; 1203-reverse damping driving surface B; 1204-spline tooth A; 1205- Damping friction pair G; 13-bearing damping plate; 14-wave spring; 15-spring seat; 1501-positioning rib; 1502-reverse damping driving surface A; 1503-reinforcement rib; 1504-spring retaining edge; 1505- boss; 16-Basic damping plate; 1601-Damping friction pair F 17-cross washer A; 18-damping disc spring; 19-shaft sleeve plate B; 1901-spring window; 1902-pre-damping window; 1903-reverse damping driving surface B; 1904-spline tooth A; 1905- Damping friction pair H; 20-cover plate; 2001-rivet hole; 21-torsion limiting pressure plate; 22-torsion limiting disc spring; 23-twist-limit cover; 24- symmetrical damping ring; 2401- positioning column B; 2402- damping friction pair I; 25-pre-vibration damping spring; 26-pre-vibration damping shaft sleeve plate; 27-Forward damping disc spring; 2701-Damping friction pair Q; 28-shaft sleeve plate C; 2801-spring window; 2802-step damping square hole; 2803-reverse damping driving surface B; 2804-spline tooth B; 2805- Damping friction pair J; 2806- Damping friction pair K; 29-reverse damping cover; 2901- Damping friction pair L; 2902- Damping friction pair M; 2903-Rivet hole; 2904-Flanged edge; 30-controllable reverse damping drive plate; 3001-reverse damping drive flange; 3002-reverse damping drive angle; 3003- Damping friction pair N; 3004- Damping friction pair O; 3005-through hole; 3006-waist hole; 31-cross washer B; 3101-damping friction pair P; 32-reverse damping disc spring; 33-reverse damping rivet. DETAILED DESCRIPTION
[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0019] Figure 1 A schematic diagram showing a specific embodiment of the present invention 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; 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 a controllable asymmetric damping function AA according to a specific embodiment of the present invention is shown; Figure 5 A schematic diagram showing the AA section of the pre-vibration symmetric damping function of a specific embodiment of the present invention; 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; Fig. 9 A schematic diagram of a reverse damping drive plate according to a specific embodiment of the present invention is shown; Fig.10 A schematic diagram of a symmetrical damping ring according to a specific embodiment of the present invention is shown; Fig.11 A schematic diagram of a shaft sleeve plate C according to a specific embodiment of the present invention is shown; Fig.12 A schematic diagram of an asymmetric damping ring according to a specific embodiment of the present invention is shown; Fig.13 A schematic diagram of a controllable reverse damping driving plate according to a specific embodiment of the present invention is shown; Fig.14 A schematic diagram showing the asymmetric damping characteristics of pre-vibration reduction according to a specific embodiment of the present invention is shown; Fig.15 A schematic diagram showing controllable asymmetric damping characteristics of a specific embodiment of the present invention is shown; Fig.16 A schematic diagram showing the symmetrical damping characteristics of pre-vibration reduction according to a specific embodiment of the present invention is shown.
[0020] like Figure 1-Figure 3 As shown, the present invention provides a torque limiter with multifunctional damping and selectable stiffness characteristics, including a torque limiter sub-assembly and a shock absorber sub-assembly.
[0021] The torque limiter sub-assembly includes parts such as a torque limiting friction steel sheet 4, a torque limiting friction sheet 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 sheet 3 is arranged on each side of the torque limiting friction steel sheet 4. The two torque limiting friction sheets 3 are closely attached to the two sides of the torque limiting friction steel sheet 4. The torque limiting cover plate 2 is arranged on one side of one of the torque limiting friction sheets 3, and the torque limiting pressure plate 21 is arranged on one side of the other of the torque limiting friction sheets 3. The torque limiting disc spring 22 is arranged on the other side of the torque limiting pressure plate 21, and the torque limiting cover 23 is arranged on the other side of the torque limiting disc spring 22. A plurality of square holes are arranged circumferentially on the torque limiting cover 23, and a plurality of angled corners are arranged circumferentially on the torque limiting pressure plate 21, and the angled corners are placed in the square holes. The torque limiting cover 23 and the torque limiting cover plate 2 are riveted together by the torque limiting rivets 1. By controlling the basin height of the torque limiting cover 23 and the basin height of the torque limiting cover plate 2, the compression height of the torque limiting disc spring 22 produces the clamping force required by the design, thereby forming a torque limiter subassembly.
[0022] The shock absorber sub-assembly includes a steel sheet 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 symmetric 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.
[0023] like Figure 2 As shown, a damping friction pair A501 is arranged on the steel sheet 5 .
[0024] like Fig. 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 .
[0025] like Fig.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.
[0026] like Figure 6 As shown, the shaft sleeve plate A12 is provided with a spring window 1201, a pre-damping window 1202, a reverse damping driving surface B1203, a spline tooth A1204, and a damping friction pair G1205.
[0027] like Figure 8As shown, the spring seat 15 is provided with positioning ribs 1501, a reverse damping driving surface A1502, reinforcing ribs 1503, a spring retaining edge 1504, and a boss 1505. The reinforcing ribs 1503 effectively improve the strength of the spring seat 15.
[0028] like Figure 2 As shown, a damping friction pair F1601 is arranged on the basic damping plate 16; like Figure 7 As shown, the shaft sleeve plate B19 is provided with a spring window 1901, a pre-damping window 1902, a reverse damping driving surface B1903, spline teeth 1904, and a damping friction pair H1905.
[0029] like Figure 3 As shown, rivet holes 2001 are arranged on the cover plate 20 .
[0030] like Fig.10 As shown, the symmetrical damping ring 24 is provided with a positioning column B2401 and a damping friction pair I2402.
[0031] like Fig.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.
[0032] 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 .
[0033] like Fig.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 .
[0034] like Figure 4 As shown, a damping friction pair P3101 is arranged on the cross washer B31.
[0035] The shaft sleeve plate A12 and the shaft sleeve plate B19 are stacked, the spring windows 1201 and the spring windows 1901, the pre-vibration damping windows 1202 and the pre-vibration damping windows 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, and spring seats 15 are arranged on both sides of the large springs 11. The positioning ribs 1501 on the spring seats 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 plate A12 and the sleeve plate B19 are aligned, and the spline sleeve 10 is arranged inside. The steel sheet 5 and the cover plate 20 are arranged on both sides of the sleeve plate A12 and the sleeve plate 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 sub-assembly.
[0036] 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.
[0037] 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 Fig.14The pre-vibration 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 circle 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, and 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 rotate counterclockwise to compress the spring, the damping structural parts generate reverse damping. 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, the shaft sleeve plate B19 and the basic damping plate 16 always generate sliding friction during the forward and return strokes, and 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.
[0038] 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 parts can be realized. Fig.15The controllable asymmetric damping characteristics shown in the figure can achieve the optimized start-stop and idling vibration reduction effect; the parts of the shaft sleeve plate A12, shaft sleeve plate B19, pre-vibration damping spring 25, and pre-vibration damping shaft sleeve plate 26 that realize the pre-vibration damping stiffness characteristics are replaced by 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 drive plate 30, a cross washer B31, a reverse damping disc spring 32, and a reverse damping rivet 33. The reverse damping cover plate assembly is a controllable reverse damping cover plate assembly, the reverse damping disc spring 32 is arranged between the cover plate 20 and the cross washer B31, the controllable reverse damping driving plate 30 is arranged on the other side of the cross washer B31, the reverse damping cover plate 29 is arranged on the other side of the controllable reverse damping driving plate 30, the flange 2904 passes through the through hole 3005, and the reverse damping rivet 33 passes through the rivet hole 2903 and the rivet hole 2001 to rivet the reverse damping cover plate 29 and the cover plate 20; the forward damping disc spring 27 is arranged between the controllable reverse damping cover plate assembly and the shaft sleeve plate C28, when the shaft sleeve plate C28 During the counterclockwise rotation of the compression spring, the damping structural parts generate reverse damping. During the forward stroke, the reverse damping driving surface B2803 contacts the reverse damping driving flange 3001, the sleeve plate C28 drives the controllable reverse damping driving plate 30 to rotate, and 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, the spring seat 15 drives the controllable reverse damping driving plate 30 to rotate, and the flange 2904 moves in the space of the waist-shaped hole 3006. 8 and the symmetrical damping ring 24 always generate sliding friction during the forward stroke and the return stroke, the forward damping disc spring 27 and the reverse damping cover plate 29 always generate sliding friction during the forward stroke and the return stroke, and 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.
[0039] like Figure 5 As shown, when the damping structure parts use a symmetrical damping ring 24, a basic damping plate 16, a cross washer A17, and a damping disc spring 18, the damping Fig.16The pre-damping symmetrical damping characteristics shown in the figure, the symmetrical damping ring 24 is arranged between the steel sheet 5 and the shaft sleeve plate A12, the positioning column B2401 is arranged in the inner circle hole of the steel sheet 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, and 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 structural parts produce reverse and forward damping, and the reverse and forward damping are equal. The sleeve plate A12 and the symmetrical damping ring 24, and the sleeve plate B19 and the basic damping plate 16 always produce sliding friction during the forward and return strokes. The forward and reverse damping characteristics of the pre-damping symmetrical damping characteristics are the damping torques 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.
[0040] The torque limiter sub-assembly and the shock absorber sub-assembly are riveted together by several flat pins 9 to form a torque limiter shock absorber assembly. Four parts with large diameters are used in the torque limiter sub-assembly, namely, the torque limiter friction steel sheet 4, the torque limiter cover 23, the torque limiter cover plate 2, and the torque limiter pressure plate 21. Five parts with small diameters are used in the shock absorber sub-assembly, 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 limiter 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 limiter 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 limiter cover 23 and the inner circle contours of the torque limiter cover 2, and the material thickness is the same.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope 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 sub-assembly 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 driving 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 driving 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, a plurality of 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, a plurality of 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, 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, and the torsion damper can achieve at least three different damping and stiffness characteristics through different combinations of the damping structural parts.
2. The multifunctional torque limiting 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 retaining edge 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 circumferentially arranged 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 torque limiting vibration damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The damping structural parts 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 sheet and the first shaft sleeve plate and close to the steel sheet side, the asymmetric damping ring is arranged between the steel sheet and the first shaft sleeve plate and 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 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 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 compression spring of the first shaft sleeve plate and the second shaft sleeve plate, the damping structural part generates reverse large damping, and the reverse large damping characteristic of the pre-damping asymmetric damping characteristic is the 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 compression spring, the damping structural parts generate positive small damping, and 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 damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The damping structural 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, and the reverse damping rivet rivets the reverse damping cover plate and the cover plate; 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 counterclockwise to rotate, the damping structural part 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 absorber with selectable damping and stiffness characteristics according to claim 1, characterized in that: The damping structural parts 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 sheet and the first shaft sleeve plate, the basic damping sheet 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 sheet 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 damper with selectable damping and stiffness characteristics according to claim 1, characterized in that: The torque limiter sub-assembly comprises a torque limiting friction steel sheet, a torque limiting friction sheet, 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 sheet is arranged on each side of the torque limiting friction steel sheet, and the two torque limiting friction sheets are closely attached to the two sides of the torque limiting friction steel sheet, a torque limiting cover plate is arranged on one side of one of the torque limiting friction sheets, and a torque limiting pressure plate is arranged on one side of the other torque limiting friction sheet; 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 sub-assembly.
7. The multifunctional limited torsion 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 compression height of the torsion limiting disc spring generates the pressing force required by the design.
8. The multifunctional limited torsion 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 torsion damper with selectable damping and stiffness characteristics according to any one of claims 1 to 8, characterized in that: 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.
10. The multifunctional limited torsion damper 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 positioning ribs, a first reverse damping driving surface, reinforcing ribs, 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; The cover plate is provided with rivet holes; 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 driving plate is provided with a reverse damping driving flange, a reverse damping driving angle, a fourteenth damping friction pair, a fifteenth damping friction pair, a through hole, and a waist-shaped hole; The sixteenth damping friction pair is arranged on the second cross washer.