Dustproof structure for oil damper

Abstract

The utility model discloses a dustproof structure for an oil damper, and relates to the technical field of dustproof structures. The damping device comprises an oil hydraulic cylinder, a damping inner rod is movably arranged in the oil hydraulic cylinder in a telescopic mode, a dustproof sleeve is sleeved on the outer side of the damping inner rod, a mounting seat is arranged at one end, away from the oil hydraulic cylinder, of the damping inner rod, and a mounting groove is formed in one side, close to the damping inner rod, of the mounting seat. Gas generated when the dust-proof sleeve of the exhaust pipe shrinks is exhausted and finally exhausted through the space between the exhaust pipe and the inner wall of the mounting groove, the exhaust pipe is arranged in the mounting groove, the mounting base is used for protection, dust and impurities can be effectively prevented from entering the dust-proof sleeve, meanwhile, the dust-proof net is additionally arranged, and the dust-proof effect is good. And dust and impurities are further prevented from entering the dustproof sleeve to abrade the outer surface of the damping inner rod, the problem that dust and impurities or water easily enters the dustproof sleeve through small holes due to the fact that holes are directly formed in the dustproof sleeve is solved, and the reasonability of the dustproof cover is further improved.

Description

Technical Field

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

[0002] Hydraulic shock absorber is a kind of shock absorber commonly used in the fields of automobiles, industrial machinery, construction engineering, etc. It uses the flow damping characteristics of liquid to slow down and absorb the impact and vibration of machinery or structures. It usually consists of two main parts: a cylinder and a piston. When the machinery or structure is impacted, the oil in the cylinder flows through the piston to generate damping force to slow down the vibration caused by the impact. This kind of hydraulic shock absorber can effectively improve the stability and safety of mechanical equipment or building structures, extend their service life, and also improve the comfort and efficiency of operation, prevent dust, moisture and other impurities from entering the shock absorber, and protect the working parts of the shock absorber from damage. Usually, a dust cover or sealing cover is covered on the outside of the shock absorber.

[0003] Small holes are provided on the traditional dust cover to allow internal air circulation and maintain the balance of the internal environment. However, dust, impurities or water may enter the dust cover through the small holes and cannot be discharged, which may easily cause wear on the piston rod. To address the above problems, the inventor proposes a dustproof structure for a hydraulic shock absorber to solve the above problems. Utility Model Content

[0004] In order to solve the problem that small holes in the dust cover easily lead to the intrusion of dust, impurities or water, the utility model aims to provide a dustproof structure for a hydraulic shock absorber.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a dustproof structure for an oil pressure shock absorber, comprising an oil pressure cylinder, a shock-absorbing inner rod movably and retractably arranged inside the oil pressure cylinder, a dustproof sleeve being sleeved on the outer side of the shock-absorbing inner rod, a mounting seat being arranged at one end of the shock-absorbing inner rod away from the oil pressure cylinder, a mounting groove being arranged on the side of the mounting seat close to the shock-absorbing inner rod, a fixing pipe being fixedly connected inside the mounting groove, one end of the dustproof sleeve being movably sleeved on the outer side of the fixing pipe, an annular groove being arranged on the outer side of the end of the oil pressure cylinder close to the shock-absorbing inner rod, the other end of the dustproof sleeve being movably sleeved on the outer side of the annular groove, an exhaust pipe being fixedly connected on both sides of the fixing pipe, a dustproof net being arranged inside the exhaust pipe, a sealing groove being arranged inside the end of the oil pressure cylinder close to the shock-absorbing inner rod, a rubber sealing pad being fixedly installed inside the sealing groove, and the front end of the rubber sealing pad being arranged as an arc surface.

[0006] Preferably, the exhaust pipe is provided with symmetrically distributed guide grooves on one side away from the fixed pipe, and the outer side of the dustproof net is fixedly connected with a guide block, and the guide block is slidably engaged in the guide groove.

[0007] Preferably, a threaded cover is threadedly connected to one end of the exhaust pipe and is located outside the dustproof net, and an inner wall of the threaded cover is in conflict with the dustproof net.

[0008] Preferably, two half hoops are provided on the outer side of the connecting end of the dust cover, one end of the two half hoops are rotatably connected, and the other end of the two half hoops is provided with a bolt, the bottom end of the bolt movably passes through the same side of the two half hoops and is threadedly connected with a nut.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The gas generated when the dust cover of the exhaust pipe shrinks is discharged by setting a gas outlet, and finally discharged through the exhaust pipe and the inner wall of the mounting groove. The exhaust pipe is set inside the mounting groove and protected by the mounting seat, which can effectively prevent dust and impurities from entering the inside of the dust cover. At the same time, a dustproof net is added to further prevent dust and impurities from entering the inside of the dust cover and causing wear on the outer surface of the shock-absorbing inner rod, avoiding the problem that dust impurities or water can easily enter the inside of the dust cover through the small holes caused by directly opening holes in the dust cover, and further improving the rationality of the dust cover;

[0011] 2. By setting a threaded cover, the threaded cover is threadedly connected to the outside of one end of the exhaust pipe and contacts the dust screen, so as to fix the position of the dust screen. At the same time, by opening the threaded cover, the dust screen can be easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the overall split structure of the utility model.

[0016] Figure 4 For this utility model Figure 3Enlarged view of point A in the middle.

[0017] Figure 5 It is a schematic diagram of the local structure of the utility model.

[0018] Figure 6 It is a structural schematic diagram of the half hoop, bolt and nut in the utility model.

[0019] In the figure: 1. hydraulic cylinder; 2. shock-absorbing inner rod; 3. dust cover; 4. annular groove; 5. mounting seat; 6. fixing pipe; 7. exhaust pipe; 8. guide groove; 9. dust net; 10. guide block; 11. threaded cover; 12. half clamp; 13. bolt; 14. nut; 15. rubber sealing gasket; 16. sealing groove; 17. mounting groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example: Figure 1-6 As shown, the utility model provides a dustproof structure for a hydraulic shock absorber, including a hydraulic cylinder 1, a shock-absorbing inner rod 2 is movably and retractably arranged inside the hydraulic cylinder 1, a dustproof sleeve 3 is sleeved on the outer side of the shock-absorbing inner rod 2, a mounting seat 5 is arranged at one end of the shock-absorbing inner rod 2 away from the hydraulic cylinder 1, a mounting groove 17 is provided on the side of the mounting seat 5 close to the shock-absorbing inner rod 2, a fixed pipe 6 is fixedly connected inside the mounting groove 17, one end of the dustproof sleeve 3 is movably sleeved on the outer side of the fixed pipe 6, an annular groove 4 is provided on the outer side of one end of the hydraulic cylinder 1 close to the shock-absorbing inner rod 2, the other end of the dustproof sleeve 3 is movably sleeved on the outer side of the annular groove 4, exhaust pipes 7 are fixedly connected on both sides of the fixed pipe 6, and a dustproof net 9 is arranged inside the exhaust pipe 7.

[0022] A side of the exhaust pipe 7 away from the fixed pipe 6 is provided with symmetrically distributed guide grooves 8 , and the outer side of the dustproof net 9 is fixedly connected with a guide block 10 , which is slidably engaged in the guide groove 8 .

[0023] By adopting the above technical solution, through the cooperation between the guide groove 8 and the guide block 10, it is convenient to guide the dustproof net 9 during installation, and at the same time limit the rotation of the dustproof net 9.

[0024] A threaded cover 11 is threadedly connected to one end of the exhaust pipe 7 and is located outside the dustproof net 9 , and the inner wall of the threaded cover 11 is in conflict with the dustproof net 9 .

[0025] By adopting the above technical solution, a threaded cover 11 is set, and the threaded cover 11 is threadedly connected to the outer side of one end of the exhaust pipe 7 and contacts the dustproof net 9, so that the position of the dustproof net 9 is fixed. At the same time, by opening the threaded cover 11, the dustproof net 9 can be easily replaced.

[0026] Two half hoops 12 are provided on the outer side of the connecting end of the dust cover 3. One end of the two half hoops 12 is rotatably connected, and the other end of the two half hoops 12 is provided with a bolt 13. The bottom end of the bolt 13 movably passes through the same side of the two half hoops 12 and is threadedly connected with a nut 14.

[0027] By adopting the above technical solution, the two half clamps 12 are sleeved onto the outer side of the connecting end of the dust cover 3, and the bolts 13 and nuts 14 cooperate with each other, and the bolts 13 are tightened to fix the dust cover 3 to the outer side of the hydraulic shock absorber.

[0028] A sealing groove 16 is provided inside the oil pressure cylinder 1 near one end of the shock absorbing inner rod 2 , and a rubber sealing pad 15 is fixedly installed inside the sealing groove 16 .

[0029] By adopting the above technical solution and setting the rubber sealing pad 15, it is convenient to seal the contact surface between the hydraulic cylinder 1 and the shock-absorbing inner rod 2, thereby preventing dust from entering the interior of the hydraulic cylinder 1 through the gap between the contact surfaces of the hydraulic cylinder 1 and the shock-absorbing inner rod 2.

[0030] The front end of the rubber sealing pad 15 is configured to be an arc-shaped surface.

[0031] By adopting the above technical solution and setting the front end of the rubber sealing pad 15 to an arc-shaped surface, the shock-absorbing inner rod 2 can be prevented from being hung and dropped by the adsorbed dust, thereby ensuring the smoothness of the shock-absorbing inner rod 2 when it is extended and retracted.

[0032] Working principle: When using the dust cover of the oil shock absorber, the two ends of the dust cover 3 are respectively sleeved on the outside of the annular groove 4 and the fixing tube 6, and a half clamp 12 is sleeved on the outside of the connecting end of the dust cover 3, and the bolt 13 is tightened to fix the dust cover 3 to the outside of the shock absorber inner rod 2;

[0033] When in use, the dust cover 3 shrinks as the shock-absorbing inner rod 2 shrinks, and the gas generated when the dust cover 3 shrinks is discharged through the exhaust pipe 7, and finally discharged through the exhaust pipe 7 and the inner wall of the mounting groove 17. The exhaust pipe 7 is arranged inside the mounting groove 17 and protected by the mounting seat 5, which can effectively prevent dust and impurities from entering the interior of the dust cover 3. At the same time, by arranging the dustproof net 9, dust and impurities can be further prevented from entering the interior of the dust cover 3 and causing wear on the outer surface of the shock-absorbing inner rod 2.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dustproof structure for a hydraulic shock absorber, comprising a hydraulic cylinder (1), characterized in that: The hydraulic cylinder (1) has a shock-absorbing inner rod (2) that is movable and retractable inside, and a dust cover (3) is sleeved on the outer side of the shock-absorbing inner rod (2). A mounting seat (5) is provided at one end of the shock-absorbing inner rod (2) away from the hydraulic cylinder (1). A mounting groove (17) is provided on the side of the mounting seat (5) close to the shock-absorbing inner rod (2). A fixed pipe (6) is fixedly connected inside the mounting groove (17). One end of the dust cover (3) is movably sleeved on the outer side of the fixed pipe (6). An annular groove (4) is provided on the outer side of one end of the hydraulic cylinder (1) close to the shock-absorbing inner rod (2). The other end of the dust cover (3) is movably sleeved on the outer side of the annular groove (4). Exhaust pipes (7) are fixedly connected to both sides of the fixed pipe (6), and a dust screen (9) is provided inside the exhaust pipe (7).

2. A dustproof structure for an oil pressure shock absorber according to claim 1, characterized in that: The exhaust pipe (7) is provided with symmetrically distributed guide grooves (8) on one side away from the fixed pipe (6), and the outer side of the dustproof net (9) is fixedly connected with a guide block (10), and the guide block (10) is slidably engaged in the inside of the guide groove (8).

3. A dustproof structure for an oil pressure shock absorber according to claim 1, characterized in that: One end of the exhaust pipe (7) is threadedly connected to a threaded cover (11) located outside the dustproof net (9), and the inner wall of the threaded cover (11) is in conflict with the dustproof net (9).

4. A dustproof structure for an oil pressure shock absorber according to claim 1, characterized in that: Two half hoops (12) are arranged on the outer side of the connecting end of the dust cover (3), one end of the two half hoops (12) is rotatably connected, and the other end of the two half hoops (12) is arranged with a bolt (13), and the bottom end of the bolt (13) movably passes through the same side of the two half hoops (12) and is threadedly connected with a nut (14).

5. The dustproof structure for a hydraulic shock absorber according to claim 1, characterized in that: A sealing groove (16) is provided inside the oil pressure cylinder (1) near one end of the shock absorbing inner rod (2), and a rubber sealing pad (15) is fixedly installed inside the sealing groove (16).

6. A dustproof structure for an oil pressure shock absorber as claimed in claim 5, characterized in that: The front end of the rubber sealing pad (15) is configured as an arc-shaped surface.

Images