Dustproof device for oil damper of rolling stock
By designing dust-proof devices for components such as movable cylinders, cleaning brushes, mounting rings and barbs in the oil pressure shock absorber, the problem that the oil pressure shock absorber cannot effectively prevent dust in a sand and dust environment is solved, achieving more efficient dust cleaning and dust prevention effects, and extending the service life of the equipment.
Patent Information
- Application Number
- CN202421462814.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-25
AI Technical Summary
Existing oil pressure shock absorbers cannot effectively prevent dust in sand and dust environments, resulting in wear and oil leakage in the internal structure, thereby shortening the service life of the equipment.
A dust-proof device for the oil pressure shock absorber of the rolling stock vehicle is designed, using components such as movable cylinder, cleaning brush, mounting ring and barb. Through the rotation of the cleaning brush and the cleaning function of the barb, the outer wall of the dustproof cylinder and the removal of dust are achieved.
Effectively prevent sand and dust from entering the oil pressure shock absorber, extend the service life of the equipment, and improve dust protection effect.
Smart Images
Figure CN222577216U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil pressure shock absorbers, in particular to a dust prevention device for oil pressure shock absorbers of locomotives and vehicles. Background Art
[0002] As an important component of rolling stock, the role of hydraulic shock absorber is increasingly valued. Its normal function is directly related to the safety and comfort of rolling stock. The hydraulic shock absorber needs to be able to withstand the erosion of various natural and environmental factors, such as rain, snow, salt spray, ultraviolet rays, flying stones and dust. In addition, as a precision hydraulic component, if dust, grease and other debris enter the hydraulic shock absorber, it will damage the sealing lip, block the throttling hole, cause the physical and chemical properties of the hydraulic oil to deteriorate, accelerate the wear of the piston rod surface, and eventually cause the hydraulic shock absorber to fail prematurely.
[0003] Conventional hydraulic shock absorbers usually use a dustproof cylinder structure to achieve dust prevention effect. However, with the diversification of the operating environment of rail transit lines, especially in dusty environments, the simple dustproof cylinder structure can no longer meet the dust prevention needs. Dust will enter the dustproof cylinder through the gap between the dustproof cylinder and the shock absorber and adhere to the piston rod, thereby causing wear of its internal structural components and causing oil leakage. In view of this, we propose a dustproof device for locomotive and vehicle hydraulic shock absorbers. Utility Model Content
[0004] The purpose of the utility model is to provide a dust prevention device for a rolling stock oil pressure shock absorber to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a dustproof device for a rolling stock oil pressure shock absorber, comprising a dustproof cylinder, the inner wall of the dustproof cylinder is fixedly connected with a piston, the piston is sleeved with a cylinder, the outer wall of the cylinder is provided with a dustproof component, and the dustproof component comprises:
[0006] A movable cylinder, the inner wall of the dustproof cylinder is provided with a limiting groove, the dustproof cylinder is sleeved with the movable cylinder, the outer wall of the movable cylinder is fixedly connected with a limiting ring, the limiting ring is movably connected with the limiting groove, the inner wall of the movable cylinder is provided with a hemispherical groove, and the bottom of the movable cylinder is fixedly connected with a cleaning brush;
[0007] A mounting ring, the outer wall of the cylinder is fixedly connected with the mounting ring, and the outer wall of the mounting ring is fixedly connected with a hemispherical spiral ring;
[0008] A conical ring is fixedly connected to the outer wall of the cylinder, and a barb is fixedly connected to the conical ring at one end away from the cleaning brush.
[0009] Preferably, the mounting ring is fixedly connected to the trapezoidal ring at one end close to the cleaning brush.
[0010] Preferably, the hemispherical groove is arranged in a spiral shape, and the hemispherical groove matches the hemispherical spiral ring.
[0011] Preferably, the inclination angle of the hypotenuse of the trapezoidal ring is consistent with the inclination angle of the cleaning brush, and the trapezoidal ring pushes the cleaning brush to reset the cleaning brush.
[0012] Preferably, the axis of the movable cylinder coincides with that of the mounting ring, and when the mounting ring moves linearly, the movable cylinder is driven to rotate through the cooperation of the hemispherical spiral ring and the hemispherical groove.
[0013] Preferably, the barbs are arranged in a plurality of groups, and the barbs are arranged circumferentially at equal intervals on the conical ring.
[0014] Compared with the prior art, the utility model provides a dust prevention device for a rolling stock oil pressure shock absorber, which has the following beneficial effects:
[0015] 1. The anti-dust device for the oil pressure shock absorber of the locomotive vehicle is provided with a movable cylinder, a cleaning brush, a mounting ring and a barb. The cleaning brush surrounds the movable cylinder, and the cleaning brush abuts against the cylinder to form a dust barrier. When the piston moves into the cylinder to reduce vibration, the cleaning brush rotates to clean the outer wall of the cylinder to improve the cleaning effect. When the piston moves in the opposite direction, the barb cleans the cleaning brush and scrapes off the dust mixed on the cleaning brush.
[0016] 2. The locomotive vehicle oil pressure shock absorber dustproof device has a trapezoidal block, and after a long period of movement, part of the bristles of the cleaning brush will inevitably bend toward the inside of the dustproof cylinder. The trapezoidal ring pushes the cleaning brush to reset the cleaning brush, thereby improving the dustproof effect of the dustproof component and extending the service life of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;
[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of the middle A area;
[0020] Figure 4 This is an exploded view of the position relationship between the sleeve and the tapered ring of the utility model;
[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the structure of the middle B area;
[0022] Figure 6 This is an exploded cross-sectional view of the dust-proof cylinder and the movable ring of the utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the movable ring and the installation ring of the utility model.
[0024] In the figure: 1. dustproof cylinder; 2. piston; 3. cylinder body; 4. limiting groove; 5. movable cylinder; 6. limiting ring; 7. hemispherical groove; 8. cleaning brush; 9. mounting ring; 10. hemispherical spiral ring; 11. conical ring; 12. barb; 13. trapezoidal ring. DETAILED DESCRIPTION
[0025] like Figure 1-Figure 7 As shown, the utility model provides a technical solution: a dustproof device for a locomotive oil pressure shock absorber, comprising a dustproof cylinder 1, the inner wall of the dustproof cylinder 1 is fixedly connected with a piston 2, the piston 2 is sleeved with a cylinder body 3, the outer wall of the cylinder body 3 is provided with a dustproof component, the dustproof component comprises a limiting groove 4, a movable cylinder 5, a limiting ring 6, a hemispherical groove 7, a cleaning brush 8, a mounting ring 9, a hemispherical spiral ring 10, a conical ring 11, a barb 12, and a trapezoidal ring 13.
[0026] In one embodiment of the utility model, the inner wall of the dustproof cylinder 1 is provided with a limiting groove 4, the dustproof cylinder 1 is sleeved with the movable cylinder 5, the outer wall of the movable cylinder 5 is fixedly connected with a limiting ring 6, the limiting ring 6 is movably connected with the limiting groove 4, the inner wall of the movable cylinder 5 is provided with a hemispherical groove 7, the hemispherical groove 7 is spirally arranged, the bottom of the movable cylinder 5 is fixedly connected with a cleaning brush 8, the outer wall of the cylinder body 3 is fixedly connected with a mounting ring 9, the outer wall of the mounting ring 9 is fixedly connected with a hemispherical spiral ring 10, the hemispherical groove 7 cooperates with the hemispherical spiral ring 10, the axis of the movable cylinder 5 coincides with the axis of the mounting ring 9, and the mounting ring When 9 moves linearly, the movable cylinder 5 is driven to rotate by the cooperation of the hemispherical spiral ring 10 and the hemispherical groove 7. The outer wall of the cylinder body 3 is fixedly connected with a conical ring 11. The conical ring 11 is fixedly connected with a barb 12 at the end away from the cleaning brush 8. The number of the barbs 12 is arranged in several groups, and the several groups of barbs 12 are arranged on the conical ring 11 at equal intervals. The mounting ring 9 is fixedly connected with a trapezoidal ring 13 at the end close to the cleaning brush 8. The inclination angle of the hypotenuse of the trapezoidal ring 13 is consistent with the inclination angle of the cleaning brush 8. The trapezoidal ring 13 pushes the cleaning brush 8 to reset the cleaning brush 8.
[0027] The cleaning brush 8 surrounds the movable cylinder 5, and at the same time, the cleaning brush 8 abuts against the cylinder body 3 to form a dust barrier. When the piston 2 moves into the cylinder body 3 to reduce vibration, the cleaning brush 8 moves relative to the cylinder body 3 to sweep away the dust on the outer surface of the cylinder body 3. At the same time, the movable cylinder 5 moves relative to the mounting ring 9. Due to the cooperation between the hemispherical groove 7 and the hemispherical spiral ring 10, the movable cylinder 5 rotates, thereby driving the cleaning brush 8 to rotate and clean the outer wall of the cylinder body 3 to improve the cleaning effect. The piston 2 moves linearly into the cylinder body 3 so that the conical ring 11 is inserted into the dust cylinder 1 through the end of the cleaning brush 8 away from the dust cylinder 1. The piston 2 moves in the opposite direction, and the barb 12 cleans the cleaning brush 8 to scrape off the dust mixed on the cleaning brush 8.
[0028] In addition, the mounting ring 9 is fixedly connected to the trapezoidal ring 13 at one end close to the cleaning brush 8. The inclination angle of the hypotenuse of the trapezoidal ring 13 is consistent with the inclination angle of the cleaning brush 8. After a long period of movement, it is inevitable that some bristles of the cleaning brush 8 will be folded toward the inside of the dustproof cylinder 1. At this time, the barrier effect and cleaning effect of the cleaning brush 8 will be greatly reduced. Through the reverse movement of the piston 2, the cylinder body 3 and the dustproof cylinder 1 move in opposite directions, so that the trapezoidal ring 13 pushes the cleaning brush 8, and then the cleaning brush 8 is reset, thereby improving the dustproof effect of the dustproof assembly and extending the service life of the shock absorber.
[0029] In the utility model, when in use, the piston 2 moves into the cylinder 3 to reduce vibration, the cleaning brush 8 rotates to clean the outer wall of the cylinder 3, the piston 2 moves in the opposite direction, the barb 12 cleans the dust mixed on the cleaning brush 8, and further, the trapezoidal ring 13 pushes the cleaning brush 8 to reset the cleaning brush 8.
[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A dust prevention device for a rolling stock oil pressure shock absorber, comprising a dust prevention cylinder (1), the inner wall of the dust prevention cylinder (1) being fixedly connected to a piston (2), the piston (2) being sleeved with a cylinder body (3), characterized in that: The outer wall of the cylinder (3) is provided with a dustproof component, and the dustproof component comprises: A movable cylinder (5), wherein the inner wall of the dustproof cylinder (1) is provided with a limiting groove (4), the dustproof cylinder (1) and the movable cylinder (5) are sleeved together, the outer wall of the movable cylinder (5) is fixedly connected to a limiting ring (6), the limiting ring (6) is movably connected to the limiting groove (4), the inner wall of the movable cylinder (5) is provided with a hemispherical groove (7), and the bottom of the movable cylinder (5) is fixedly connected to a cleaning brush (8); A mounting ring (9), the outer wall of the cylinder (3) being fixedly connected to the mounting ring (9), and the outer wall of the mounting ring (9) being fixedly connected to a hemispherical spiral ring (10); A conical ring (11), the outer wall of the cylinder (3) being fixedly connected with the conical ring (11), and the conical ring (11) being fixedly connected with a barb (12) at one end away from the cleaning brush (8).
2. The anti-dust device for a rolling stock oil pressure shock absorber according to claim 1, characterized in that: The mounting ring (9) is fixedly connected to the trapezoidal ring (13) at one end close to the cleaning brush (8).
3. The anti-dust device for a rolling stock oil pressure shock absorber according to claim 1, characterized in that: The hemispherical groove (7) is arranged in a spiral shape, and the hemispherical groove (7) matches the hemispherical spiral ring (10).
4. The anti-dust device for a rolling stock oil pressure shock absorber according to claim 2, characterized in that: The inclination angle of the hypotenuse of the trapezoidal ring (13) is consistent with the inclination angle of the cleaning brush (8).
5. The anti-dust device for a rolling stock oil pressure shock absorber according to claim 1, characterized in that: The axis of the movable cylinder (5) coincides with the axis of the mounting ring (9).
6. The anti-dust device for a rolling stock oil pressure shock absorber according to claim 1, characterized in that: The barbs (12) are arranged in a number of groups, and the barbs (12) are arranged circumferentially at equal intervals on the conical ring (11).