Removable thrust washer
With its detachable thrust washer designed in a split configuration, the buffer part directly contacts the gearbox shaft, absorbing and dispersing vibrations. This solves the problem of thrust washers loosening due to vibrations, achieving stable fixation and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XINYONGLI CIRCLIPS CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-03
AI Technical Summary
Existing thrust washers are prone to loosening due to vibration when the gearbox starts, which leads to increased shaft output amplitude and causes vibration problems.
The detachable thrust washer with a split design includes an upper washer, a lower washer, and a buffer section. The buffer section contacts the gearbox shaft through the buffer washer, reducing vibration and transmitting it to the upper and lower washers to reduce the amplitude.
It effectively reduces the vibration of the gearbox shaft, ensures the thrust washer is stably fixed, and avoids the washer displacement or falling off due to high-frequency vibration. It is suitable for dynamic working conditions.
Smart Images
Figure CN224453606U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thrust washers, and particularly to detachable thrust washers. Background Technology
[0002] Thrust washers are annular or semi-annular components used in conjunction with radial sliding bearings, primarily to prevent axial movement in mechanical devices. Thrust washers are a core safety component in the axial force balancing system of a gearbox. However, gearboxes generate vibration during startup, and existing washers are easily loosened by this vibration, increasing the output amplitude of the gearbox shaft and causing vibration. To address these issues, a solution is proposed below. Utility Model Content
[0003] The purpose of this invention is to provide a detachable thrust washer, which has the advantage of enhancing the washer's resistance to vibration through a split design.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0005] A detachable thrust washer includes an upper washer, a buffer portion, and a lower washer. Both the upper and lower washers have mounting grooves. The two mounting grooves located in the upper and lower washers combine to form a complete mounting cavity. The buffer portion is located in the mounting cavity and is detachably connected to the mounting cavity. The inner diameter of the buffer portion is smaller than the inner diameter of the upper and lower washers.
[0006] Preferably, the buffer portion includes two buffer pads and a buffer washer located between the two buffer pads. The buffer pads are annular, and the inner diameter of the buffer pads is the same as the inner diameter of the upper washer.
[0007] Preferably, the lower end face of the upper washer is provided with a plurality of positioning protrusions, and the upper end face of the lower washer is provided with a plurality of positioning grooves, wherein the positioning protrusions and positioning grooves are inserted into each other.
[0008] Preferably, the positioning groove is arc-shaped, the positioning protrusion is inserted into the positioning groove and slidably connected with the positioning groove, the bottom surface of the positioning groove is inclined, the length of the positioning protrusion is greater than the depth of the positioning groove, one end of the positioning groove is provided with a slot, the positioning protrusion rotates to the slot and engages with the slot.
[0009] The beneficial effects of this utility model are as follows: the upper and lower washers do not directly contact the gearbox shaft, while the buffer washer directly contacts the vibration of the gearbox shaft. After the vibration is reduced by the buffer washer, it is transmitted to the upper and lower washers, thereby reducing the amplitude of the upper and lower washers and enabling the thrust washer to be stably fixed on the gearbox shaft. Attached Figure Description
[0010] Figure 1 Schematic structural diagram of an embodiment;
[0011] Figure 2 Cross-sectional view of an embodiment;
[0012] Figure 3 Top view of the washer under the embodiment.
[0013] Reference numerals: 1, upper washer; 2, lower washer; 3, card slot; 4, buffer pad; 5, buffer washer; 6, positioning bump; 7, positioning groove. Detailed implementation manners
[0014] The following description is only the preferred implementation manner of the present utility model, and the protection scope is not limited to this embodiment. All technical solutions falling within the idea of the present utility model shall belong to the protection scope of the present utility model. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom" and "top", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.
[0015] As Figures 1 to 3 shown, a detachable thrust washer includes an upper washer 1, a lower washer 2 and a buffer part located therebetween. An annular mounting groove is provided on the lower end surface of the upper washer 1, and a matching annular mounting groove is provided on the upper end surface of the lower washer 2. When the upper washer 1 and the lower washer 2 are aligned, the two mounting grooves combine to form a closed cylindrical mounting cavity.
[0016] The buffer part is detachably fitted in the mounting cavity, and its inner circle diameter d1 is smaller than the inner circle diameter d2 of the upper washer 1 and the lower washer 2, that is, d1 < d2, so that the inner side wall of the buffer part directly contacts the transmission shaft, and there is a gap between the inner walls of the upper washer 1 and the lower washer 2 and the transmission shaft.
[0017] The buffer part consists of two layers of annular buffer pads 4 and a buffer pad ring sandwiched therebetween. The inner circle diameter of the buffer pad 4 is the same as the inner circle diameter d2 of the upper washer 1, and the inner circle diameter of the buffer pad ring is equal to d1, that is, d1 < d2. The buffer pad 4 is preferably made of rubber, the buffer pad ring is made of wear-resistant engineering plastic such as POM, or the buffer pad ring is directly made of stainless steel. The buffer pad ring and the two layers of buffer pads 4 are fixed into an integral module by bonding or buckling.
[0018] Four evenly distributed arc-shaped positioning bumps 6 are provided on the lower end surface of the upper washer 1, and corresponding arc-shaped positioning grooves 7 are provided on the upper end surface of the lower washer 2.
[0019] In this design, the bottom surface of the positioning groove 7 is an inclined surface with an inclination angle of 5°~15°, and the length L1 of the positioning protrusion 6 is greater than the depth L2 of the deepest part of the positioning groove 7, that is, L1>L2.
[0020] During assembly, the positioning protrusion 6 is inserted into the positioning groove 7 along the inclined surface and slides until it rotates into the slot 3 at the end of the positioning groove 7. At this time, the positioning protrusion 6 and the slot 3 form an insertion lock, realizing the circumferential fixation of the upper washer 1 and the lower washer 2.
[0021] During installation, the buffer pads 4 rings of the buffer section directly cover the surface of the gearbox shaft. When the shaft transmits vibration, the vibration energy is first absorbed by the buffer pads 4 rings and dispersed to the buffer pads 4 on both sides; the buffer pads 4 further attenuate the vibration through elastic deformation; the remaining slight vibration is transmitted to the upper washer 1 and the lower washer 2 through the mounting cavity, and its amplitude is significantly reduced.
[0022] This design ensures that the thrust washer is stably fixed on the shaft, preventing displacement or detachment of the washer due to high-frequency vibration, and is especially suitable for dynamic operating conditions such as gearboxes.
[0023] Disassembly and maintenance:
[0024] Rotating the upper washer 1 in the opposite direction causes the positioning protrusion 6 to disengage from the slot 3, thus separating the upper washer 1 from the lower washer 2. The buffer part can then be removed for replacement or cleaning, significantly extending the service life of the component.
[0025] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A detachable thrust washer, comprising an upper washer (1), a buffer portion, and a lower washer (2), characterized in that, The upper washer (1) and the lower washer (2) are both provided with mounting grooves. The two mounting grooves located in the upper washer (1) and the lower washer (2) are combined to form a complete mounting cavity. The buffer part is located in the mounting cavity and is detachably connected to the mounting cavity. The inner diameter of the buffer part is smaller than the inner diameter of the upper washer (1) and the lower washer (2).
2. The removable thrust washer of claim 1, wherein, The buffer section includes two buffer pads (4) and a buffer pad (4) ring located between the two buffer pads (4). The buffer pads (4) are annular, and the inner diameter of the buffer pads (4) is the same as the inner diameter of the upper washer (1).
3. The removable thrust washer of claim 1, wherein, The lower end face of the upper washer (1) is provided with a plurality of positioning protrusions (6), and the upper end face of the lower washer (2) is provided with a plurality of positioning grooves (7). The positioning protrusions (6) and the positioning grooves (7) are inserted into each other.
4. The removable thrust washer of claim 3, wherein, Several of the positioning grooves (7) are arc-shaped. The positioning protrusion (6) is inserted into the positioning groove (7) and is slidably connected with the positioning groove (7). The bottom surface of the positioning groove (7) is inclined. The length of the positioning protrusion (6) is greater than the depth of the positioning groove (7). One end of the positioning groove (7) is provided with a slot (3). The positioning protrusion (6) rotates to the slot (3) and is inserted into the slot (3).