Multistage torsional vibration damper

Abstract

The utility model relates to the technical field of crankshaft shock absorbers, in particular to a multistage torsional shock absorber which comprises an inner sleeve, an outer sleeve is sleeved outside the inner sleeve, second vulcanized rubber is adhered between the inner sleeve and the outer sleeve, a lining is arranged in the inner sleeve, and first vulcanized rubber is adhered to the inner side wall of the lining. The first vulcanized rubber and the second vulcanized rubber can elastically deform along with rotation of the outer sleeve and the check ring, so that vibration and force are absorbed and damped, multi-stage buffering and damping are carried out, a certain gap is kept between the inner sleeve and the check ring, and when axial vibration occurs, the damping effect is good. The first vulcanized rubber on the check ring can play a better buffering role, abrasion of mechanical equipment is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft vibration dampers, in particular to a multi-stage torsional vibration damper. Background Art

[0002] Torsional vibration damper is a shock absorbing device commonly used in mechanical equipment. When the mechanical equipment is running, the torque and vibration generated by the crankshaft may cause damage or wear to other mechanical parts, thereby shortening the service life of the mechanical equipment, or causing the mechanical equipment to malfunction or even damage. The main function of the torsional vibration damper is to reduce the impact and vibration force caused by torque and vibration;

[0003] A Chinese public patent (publication number: CN207661061 U) discloses a spinning automobile crankshaft damping wheel, which includes a damping wheel, a shock absorber, a sleeve, a gear ring and an end cover, wherein the sleeve and the gear ring are both produced by a spinning process; the beneficial effects of the utility model are as follows: the gear ring and the sleeve part of the spinning automobile crankshaft damping wheel are both produced by a spinning process, and the production of the sleeve adopts the most advanced international spinning thickening technology, which reduces the requirements for material thickness, greatly improves the utilization rate of materials and production efficiency, thereby reducing costs and improving competitiveness; compared with traditional machined products, the spinning damping wheel has high strength and light weight, which greatly reduces the energy consumption of automobile engine starting-braking, but in actual use, the frequency and amplitude of axial vibration are usually relatively large, which can easily cause damage and wear of mechanical equipment and reduce the service life of the machinery. For this reason, a multi-stage torsional vibration damper is proposed. Utility Model Content

[0004] In view of this, the utility model provides a multi-stage torsional vibration damper to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is implemented as follows: a multi-stage torsional vibration damper, including an inner sleeve, an outer sleeve of the inner sleeve, a second vulcanized rubber bonded between the inner sleeve and the outer sleeve, a bushing is provided inside the inner sleeve, and a first vulcanized rubber is bonded to the inner side wall of the bushing.

[0006] Further preferably, the inner side wall of the inner sleeve is fixedly connected with a shaft sleeve.

[0007] Further preferably, the outer side wall of the inner sleeve is fixedly connected with a dust cover.

[0008] Further preferably, the outer side wall of the inner sleeve is fixedly connected with a sensor gear ring.

[0009] Further preferably, a retaining ring is provided inside the inner sleeve, and one end of the retaining ring is bonded to the first vulcanized rubber.

[0010] Further preferably, a central axis hole is opened at the center of one end of the inner sleeve.

[0011] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0012] The first vulcanized rubber and the second vulcanized rubber of the utility model will undergo elastic deformation as the outer sleeve and the retaining ring rotate, thereby absorbing and reducing vibration and force, and performing multi-level buffering and shock reduction. A certain gap is maintained between the inner sleeve and the retaining ring, so that when axial vibration occurs, the first vulcanized rubber on the retaining ring can play a better buffering role, reduce the wear of mechanical equipment, and increase the service life.

[0013] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural diagram of the multi-stage torsional vibration damper of the utility model;

[0016] Figure 2 For this utility model Figure 1 The right side view of the structure diagram;

[0017] Figure 3 For this utility model Figure 1 Left side view of the structure diagram.

[0018] Figure numerals: 1, inner sleeve; 2, outer sleeve; 3, retaining ring; 4, bushing; 5, shaft sleeve; 6, sensing gear ring; 7, dust cover; 8, first vulcanized rubber; 9, second vulcanized rubber; 10, center shaft hole. DETAILED DESCRIPTION

[0019] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0020] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-3 As shown, an embodiment of the utility model provides a multi-stage torsional vibration damper, including an inner sleeve 1, an outer sleeve 2 is provided on the outside of the inner sleeve 1, a second vulcanized rubber 9 is bonded between the inner sleeve 1 and the outer sleeve 2, a bushing 4 is provided inside the inner sleeve 1, and a first vulcanized rubber 8 is bonded to the inner wall of the bushing 4.

[0022] In one embodiment, the inner wall of the inner sleeve 1 is fixedly connected to a shaft sleeve 5; through the setting of the shaft sleeve 5, the inner cavity surface contacts the shaft surface, and the outer surface contacts the bearing, which plays a role in protecting the shaft and the bearing, while supporting and transmitting the force between the shaft and the bearing, so that the bearing can better withstand force and friction.

[0023] In one embodiment, a dust cover 7 is fixedly connected to the outer wall of the inner sleeve 1 to prevent dust from entering the outer connection of the inner sleeve 1 .

[0024] In one embodiment, the outer wall of the inner sleeve 1 is fixedly connected with a sensing gear ring 6; through the setting of the sensing gear ring 6, when the sensing gear ring 6 rotates, relative movement is generated between the sensor and the sensor, ensuring that the sensor can accurately detect and transmit the signal of the rotation of the inner sleeve 1.

[0025] In one embodiment, a retaining ring 3 is provided inside the inner sleeve 1, and one end of the retaining ring 3 is bonded to the first vulcanized rubber 8; through the setting of the retaining ring 3, the axial movement of the rotating parts connected to the inner sleeve 1 is controlled to ensure that they do not move or swing excessively during operation.

[0026] In one embodiment, a central axis hole 10 is provided at the center of one end of the inner sleeve 1; the central axis hole 10 facilitates the connection between the inner sleeve 1 and the shaft.

[0027] When the utility model is working: the torque and vibration generated by the crankshaft will be transmitted to the torsional vibration damper, the first vulcanized rubber 8 and the second vulcanized rubber 9 will be elastically deformed with the rotation of the outer sleeve 2 and the retaining ring 3, so as to absorb and reduce the vibration and impact, and when the sensing gear ring 6 rotates, it will produce relative movement with the sensor, ensuring that the sensor can accurately detect and transmit the signal of the rotation of the inner sleeve 1, and a certain gap is maintained between the inner sleeve 1 and the retaining ring 3, so that when axial vibration occurs, the first vulcanized rubber 8 on the retaining ring 3 can play a better buffering role.

[0028] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-stage torsional vibration damper, characterized in that: The invention comprises an inner sleeve (1), the outer sleeve of the inner sleeve (1) is provided with an outer sleeve (2), a second vulcanized rubber (9) is bonded between the inner sleeve (1) and the outer sleeve (2), a bushing (4) is provided inside the inner sleeve (1), and a first vulcanized rubber (8) is bonded to the inner wall of the bushing (4).

2. A multi-stage torsional vibration damper according to claim 1, characterized in that: The inner side wall of the inner sleeve (1) is fixedly connected with a shaft sleeve (5).

3. The multi-stage torsional vibration damper according to claim 1, characterized in that: The outer side wall of the inner sleeve (1) is fixedly connected with a dust cover (7).

4. The multi-stage torsional vibration damper according to claim 1, characterized in that: The outer side wall of the inner sleeve (1) is fixedly connected with a sensing gear ring (6).

5. The multi-stage torsional vibration damper according to claim 1, characterized in that: A retaining ring (3) is provided inside the inner sleeve (1), and one end of the retaining ring (3) is bonded to the first vulcanized rubber (8).

6. The multi-stage torsional vibration damper according to claim 1, characterized in that: A central axis hole (10) is provided at the center of one end of the inner sleeve (1).

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