Sealing dustproof device of oil damper

Abstract

The utility model discloses a sealing dustproof device of an oil damper, which comprises a dustproof cylinder, a sealing ring and a dustproof component, the dustproof component comprises an upper dustproof plate and a lower dustproof plate which are sleeved on the output end of the oil damper, lubricating oil is arranged in an oil storage cavity, a placing cavity is formed between the upper dustproof plate and the lower dustproof plate, and dust collection cotton is arranged in the placing cavity. The inner cylinder and the outer cylinder are matched to form a dustproof cavity, large-particle dust particles outside the outer cylinder are blocked, lubricating oil serves as a second layer of protection of the oil damper and absorbs entering small-particle dust, meanwhile, the lubricating oil lubricates an output shaft of the oil damper, friction during movement can be reduced, and the service life of the oil damper is prolonged. And dust collection cotton serves as a third layer of protection of the oil damper, dust entering the oil damper and lubricating oil on an output shaft of the oil damper are adsorbed, the interior of the oil damper is kept clean, and therefore the sealing effect of the oil damper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pressure shock absorbers, in particular to a sealing and dustproof device for an oil pressure shock absorber. Background Art

[0002] The hydraulic shock absorber achieves the purpose of vibration reduction by generating hydraulic damping force through the reciprocating motion of stretching and compressing the piston rod. It has good vibration reduction and damping effect and flexible vibration reduction effect.

[0003] In modern mechanical engineering, hydraulic shock absorbers are widely used in various equipment to reduce vibration and shock. However, during operation, hydraulic shock absorbers are susceptible to the intrusion of dust and impurities. This not only affects their vibration damping performance but can also cause wear and damage to internal components, shortening their service life. Existing sealing and dustproof devices have various practical shortcomings, such as poor sealing performance, complex structures, inconvenient installation, and high costs.

[0004] In view of this, the present invention is proposed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a sealing and dustproof device for an oil pressure shock absorber, so as to solve the technical problem that the sealing and dustproof device for an oil pressure shock absorber has a poor sealing effect.

[0006] The technical solution of the utility model is: a sealing and dustproof device for an oil pressure shock absorber, comprising:

[0007] The dustproof cylinder includes an inner cylinder and an outer cylinder. The inner cylinder is sleeved on the cylinder body of the oil pressure shock absorber, and the outer cylinder is installed on the upper end of the inner cylinder. The output end of the oil pressure shock absorber passes through the top of the outer cylinder.

[0008] The sealing ring is sleeved on the upper part of the output end of the oil pressure shock absorber, and the top of the outer cylinder is sleeved on the outer wall of the sealing ring;

[0009] The dustproof assembly includes an upper dustproof plate and a lower dustproof plate which are sleeved on the output end of the oil pressure shock absorber. An oil storage chamber is formed between the upper dustproof plate and the top wall of the outer cylinder. Lubricating oil is provided in the oil storage chamber. A placement chamber is formed between the upper dustproof plate and the lower dustproof plate. Dust-absorbing cotton is provided in the placement chamber.

[0010] Furthermore, the inner cylinder comprises two interlocking half cylinders;

[0011] At least two groups of connecting ears are provided on the outer wall of the half cylinder along its length direction. When the two half cylinders are buckled together, the two corresponding groups of connecting ears of the two half cylinders fit together and are connected by bolts and nuts.

[0012] Furthermore, the inner tube and the outer tube are connected by fasteners.

[0013] Furthermore, a rubber expansion ring is provided inside the inner cylinder.

[0014] Furthermore, first sealing rings are provided at both ends of the inner tube, and the first sealing rings are sleeved on the output end of the oil pressure shock absorber.

[0015] Furthermore, a second sealing ring is provided on the inner side wall of the sealing ring, and the second sealing ring is sleeved on the output end of the oil pressure shock absorber.

[0016] Furthermore, a third sealing ring is provided on the inner side of the upper dustproof plate and the lower dustproof plate, and the third sealing ring is sleeved on the output end of the oil pressure shock absorber.

[0017] By adopting the above technical solution, the utility model has the following beneficial effects:

[0018] The inner and outer cylinders are arranged to cooperate to form a dustproof cavity. The sealing ring serves as the first layer of protection for the oil pressure shock absorber to block the larger dust particles outside the outer cylinder. The lubricating oil serves as the second layer of protection for the oil pressure shock absorber to absorb the small dust particles that enter. At the same time, the lubricating oil also lubricates the output shaft of the oil pressure shock absorber, which can not only reduce the friction during movement, but also enhance the sealing effect to prevent dust from entering. The dust-absorbing cotton serves as the third layer of protection for the oil pressure shock absorber to absorb the dust that enters and the lubricating oil on the output shaft of the oil pressure shock absorber to keep the interior of the oil pressure shock absorber clean, thereby improving the sealing effect of the oil pressure shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0020] Figure 1 A schematic structural diagram of the sealing and dustproof device for the oil pressure shock absorber provided in this embodiment of the present application;

[0021] Figure 2 A cross-sectional view of the structure of the oil pressure shock absorber sealing and dustproof device provided in an embodiment of the present application;

[0022] Figure 3 Schematic diagram of the installation of the first sealing ring, the second sealing ring, and the third sealing ring of the oil pressure shock absorber sealing and dustproof device provided in an embodiment of the present application.

[0023] Figure numerals: 1. Inner tube; 2. Outer tube; 3. Oil pressure shock absorber; 4. Rubber expansion ring; 5. Sealing ring; 6. Connecting ear; 7. Bolt; 8. Fastener; 9. Lubricating oil; 10. Dust-absorbing cotton; 11. First sealing ring; 12. Second sealing ring; 13. Upper dustproof plate; 14. Lower dustproof plate; 15. Third sealing ring.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model is further described in detail with reference to the accompanying drawings.

[0026] See also Figures 1 to 3 As shown, an embodiment of the present application provides a sealing and dustproof device for an oil-pressure shock absorber, comprising: a dustproof cylinder, a sealing ring 5 and a dustproof assembly, the dustproof cylinder comprising an inner cylinder 1 and an outer cylinder 2, the inner cylinder 1 being sleeved on the cylinder body of the oil-pressure shock absorber 3, the outer cylinder 2 being installed at the upper end of the inner cylinder 1, and the output end of the oil-pressure shock absorber 3 passing through the top of the outer cylinder 2, the sealing ring 5 being sleeved on the upper part of the output end of the oil-pressure shock absorber 3, the top of the outer cylinder 2 being sleeved on the outer wall of the sealing ring 5, the dustproof assembly comprising an upper dustproof plate 13 and a lower dustproof plate 14 sleeved on the output end of the oil-pressure shock absorber 3, an oil storage chamber being formed between the upper dustproof plate 13 and the top wall of the outer cylinder 2, lubricating oil 9 being arranged in the oil storage chamber, a placement chamber being formed between the upper dustproof plate 13 and the lower dustproof plate 14, a dust-absorbing cotton 10 being arranged in the placement chamber.

[0027] In the above scheme, the inner cylinder 1 and the outer cylinder 2 are arranged to cooperate to form a dustproof cavity, the sealing ring 5 serves as the first layer of protection for the oil pressure shock absorber 3, and blocks the larger dust particles outside the outer cylinder 2. The lubricating oil 9 serves as the second layer of protection for the oil pressure shock absorber 3, and absorbs the small dust particles that enter. At the same time, the lubricating oil 9 also lubricates the output shaft of the oil pressure shock absorber 3, which can not only reduce the friction during movement, but also enhance the sealing effect to prevent dust from entering. The dust-absorbing cotton 10 serves as the third layer of protection for the oil pressure shock absorber 3, and absorbs the dust that enters and the lubricating oil on the output shaft of the oil pressure shock absorber 3, so as to keep the interior of the oil pressure shock absorber 3 clean, thereby improving the sealing effect of the oil pressure shock absorber 3.

[0028] In some possible implementations, see Figure 1 As shown, the inner cylinder 1 includes two interlocking half cylinders, and the outer wall of the half cylinder is provided with at least two groups of connecting ears 6 along its length direction. When the two half cylinders are interlocked, the two corresponding groups of connecting ears 6 of the two half cylinders fit together and are connected with nuts through bolts 7.

[0029] In the above solution, the inner tube 1 can be simply and conveniently mounted on the cylinder body of the oil pressure shock absorber 3 by means of the provided bolts 7 and nuts.

[0030] In some possible implementations, see Figure 1 As shown, the inner tube 1 and the outer tube 2 are detachably connected via a fastener 8, which facilitates the installation of the outer tube 2. The fastener 8 is a bolt.

[0031] In some possible implementations, see Figure 2 As shown, a detachable rubber expansion ring 4 is provided on the inner side of the inner cylinder 1 , and the rubber expansion ring 4 is sleeved on the cylinder body of the oil pressure shock absorber 3 .

[0032] In the above solution, vibration occurs during the operation of the oil shock absorber 3, which causes the inner tube 1 and the oil shock absorber 3 to become loose, making it easy for dust to enter. The rubber expansion ring 4 is provided to reduce vibration between the oil shock absorber 3 and the inner tube 1, thereby improving the sealing between the inner tube 1 and the oil shock absorber 3, thereby reducing the entry of dust.

[0033] In some possible implementations, see Figure 2 and Figure 3 As shown, first sealing rings 11 are provided at both ends of the inner tube 1 , and the first sealing ring 11 is sleeved on the output end of the oil pressure shock absorber 3 , and the first sealing ring 11 is slidably connected to the output end of the oil pressure shock absorber 3 .

[0034] In the above solution, the first sealing ring 11 is provided to seal between the inner tube 1 and the cylinder body of the oil pressure shock absorber 3, thereby improving the sealing performance of the inner tube 1 to the oil pressure shock absorber 3 and reducing the entry of dust.

[0035] In some possible implementations, see Figure 2 and Figure 3 As shown, a second sealing ring 12 is provided on the inner wall of the sealing ring 5 , and the second sealing ring 12 is sleeved on the output end of the oil pressure shock absorber 3 , and the second sealing ring 12 and the output end of the oil pressure shock absorber 3 are in sliding connection.

[0036] In the above solution, the second sealing ring 12 is provided to seal between the sealing ring 5 and the output end of the oil shock absorber 3, thereby improving the sealing performance of the sealing ring 5 to the output end of the oil shock absorber 3 and further reducing the entry of dust.

[0037] In some possible implementations, see Figure 2 and Figure 3 As shown, a third sealing ring 15 is provided inside the upper dustproof plate 13 and the lower dustproof plate 14. The third sealing ring 15 is sleeved on the output end of the oil pressure shock absorber 3. The third sealing ring 15 is slidably connected to the output end of the oil pressure shock absorber 3.

[0038] In the above solution, the third sealing ring 15 is provided to ensure the sealing between the upper dustproof plate 13, the lower dustproof plate 14 and the output end of the oil pressure shock absorber 3, thereby preventing dust from entering.

[0039] In actual use, the rubber expansion ring 4 is first put on the cylinder body of the oil pressure shock absorber 3, and then the two half cylinders are buckled on the cylinder body of the oil pressure shock absorber 3 and fixed by bolts 7 and nuts. Then the outer cylinder 2 is put on the output end of the oil pressure shock absorber 3 and fixed between the half cylinders by bolts, thereby realizing protection of the oil pressure shock absorber 3.

[0040] This specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of protection of the utility model, they are protected by patent law.

Claims

1. A sealing and dustproof device for an oil pressure shock absorber, characterized in that: include: A dustproof cylinder, the dustproof cylinder comprising an inner cylinder (1) and an outer cylinder (2), the inner cylinder (1) being sleeved on a cylinder body of an oil-pressure shock absorber (3), the outer cylinder (2) being mounted on an upper end of the inner cylinder (1), and the output end of the oil-pressure shock absorber (3) passing through the top of the outer cylinder (2); A sealing ring (5), wherein the sealing ring (5) is sleeved on the upper portion of the output end of the oil pressure shock absorber (3), and the top of the outer cylinder (2) is sleeved on the outer wall of the sealing ring (5); A dustproof assembly, comprising an upper dustproof plate (13) and a lower dustproof plate (14) sleeved on the output end of the oil pressure shock absorber (3); an oil storage chamber is formed between the upper dustproof plate (13) and the top wall of the outer cylinder (2); lubricating oil (9) is provided in the oil storage chamber; a placement chamber is formed between the upper dustproof plate (13) and the lower dustproof plate (14); dust-absorbing cotton (10) is provided in the placement chamber.

2. The sealing and dustproof device for the oil pressure shock absorber according to claim 1, characterized in that: The inner cylinder (1) comprises two interlocking half cylinders; At least two groups of connecting ears (6) are provided on the outer wall of the half cylinder along its length direction. When the two half cylinders are buckled together, the two corresponding groups of connecting ears (6) of the two half cylinders fit together and are connected with nuts through bolts (7).

3. The sealing and dustproof device for the oil pressure shock absorber according to claim 2, characterized in that: The inner cylinder (1) and the outer cylinder (2) are connected via a fastener (8).

4. The sealing and dustproof device for an oil pressure shock absorber according to claim 3, characterized in that: A rubber expansion ring (4) is provided inside the inner cylinder (1).

5. The sealing and dustproof device for an oil pressure shock absorber according to claim 4, characterized in that: Both ends of the inner cylinder (1) are provided with a first sealing ring (11), and the first sealing ring (11) is sleeved on the output end of the oil pressure shock absorber (3).

6. The sealing and dustproof device for an oil pressure shock absorber according to claim 5, characterized in that: A second sealing ring (12) is provided on the inner side wall of the sealing ring (5), and the second sealing ring (12) is sleeved on the output end of the oil pressure shock absorber (3).

7. The oil pressure shock absorber sealing and dustproof device according to claim 6, characterized in that: Place A third sealing ring (15) is provided on the inner side of the upper dustproof plate (13) and the lower dustproof plate (14). The third sealing ring (15) is sleeved on the output end of the oil pressure shock absorber (3).

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