Oil cylinder dustproof ring with waterproof function

Abstract

The utility model relates to the technical field of dustproof rings, and discloses an oil cylinder dustproof ring with a waterproof function, which comprises a connecting cylinder, a notch is arranged in the connecting cylinder, a dustproof ring body is arranged in the notch, a piston rod is slidably connected in the connecting cylinder, a gap is arranged in the dustproof ring body, and the piston rod is arranged in the gap. The dustproof ring comprises a dustproof ring body, a groove is formed in the dustproof ring body, an O-shaped ring is fixedly connected into the groove, the O-shaped ring has oil absorbency, and a double-lip assembly used for achieving dustproof sealing is installed on the outer side of the dustproof ring body. According to the dustproof ring, the O-shaped ring in the dustproof ring body can compensate the elasticity of the lip to a certain degree, so that the lip is tightly attached to a piston rod, meanwhile, oil can be attached to the O-shaped ring, the lubricating condition of the dustproof ring and the piston rod is improved, residual oil films are scraped through the dust scraping lip on the outer side of the dustproof ring body, and the optimal sealing performance is guaranteed through the sealing lip. And 2, the dustproof and waterproof capabilities are improved through cooperation.

Description

TECHNICAL FIELD

[0001] The utility model relates to dustproof ring technical field especially, it relates to a kind of oil cylinder dustproof ring with waterproof function. BACKGROUND

[0002] Oil cylinder dustproof ring is installed the sealing device of hydraulic cylinder piston rod extension end, around piston rod work, by closely adhering piston rod, when piston rod telescoping, scrape the dirt, impurity etc. Pollutant adhered, prevent its entry oil cylinder interior, if no dustproof ring or its failure, dirt, impurity can exacerbate oil cylinder interior piston, cylinder barrel etc. Part wear, moisture can also make hydraulic oil emulsification metamorphosis, lead to oil cylinder leakage, work efficiency reduces even early scrap.

[0003] But the existing dustproof ring in the process of using lip long-term is in compression and extension state, because it needs to deform constantly with the reciprocating motion of piston rod, to ensure sealing effect, when lip appears elastic fatigue, its ability to restore original state drops, cannot closely adhere piston rod, this will lead to external dust and water easily enter oil cylinder interior, lead to the problem of affecting use effect. UTILITY MODEL CONTENTS

[0004] In order to make up for the above insufficient, the utility model provides a kind of oil cylinder dustproof ring with waterproof function, aims at improving the dustproof ring in prior art when using, lip because piston rod reciprocating motion deforms constantly, long-term use elastic fatigue appears easily, once appears, and lip restores original state ability drops, lead to external dust and water easily enter oil cylinder, further lead to the problem of affecting use effect.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of oil cylinder dustproof ring with waterproof function, including connecting cylinder, the connecting cylinder is internally provided with slot, the slot is internally provided with dustproof ring body, the connecting cylinder is slidably connected with piston rod, the dustproof ring body is internally provided with gap, the dustproof ring body is internally provided with recess, the recess is fixedly connected with O ring inside, the O ring has oil absorption, dustproof ring body outer side is installed with the double-lip component for dustproof sealing.

[0006] Further, the double-lip component includes sealing lip, the sealing lip is arranged on the outer side of dustproof ring body, the outer side of dustproof ring body is provided with dust scraping lip, the dust scraping lip and the lower surface of sealing lip are all closely adhered with the one side of piston rod outer wall.

[0007] Further, the inside of the dust scraping lip is slidably connected with a scraper one, and the inside of the dust scraping lip is slidably connected with a scraper two.

[0008] Further, the scraper one and the scraper two are inclined at an angle consistent with the dust scraping lip.

[0009] Further, one end of the scraper one is attached to one side of the outer wall of the piston rod, and one end of the scraper two is attached to one side of the outer wall of the piston rod.

[0010] Further, the inside of the scraper one is provided with a clamping groove, and the outer wall of the scraper two is fixedly connected with a fixing frame.

[0011] Further, the outer wall of the fixing frame is fixedly connected with an inclined plate, and the inside of the fixing frame is provided with a mounting groove.

[0012] Further, the inside of the mounting groove is provided with a spring, one end of the spring is fixedly connected with a clamping block, and the clamping block is slidably connected in the inside of the mounting groove.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the O-shaped ring in the dustproof ring body is used as an elastic element to compensate the elasticity of the lip, provide additional elastic force, make the lip always closely attached to the piston rod, and the O-shaped ring can adhere to oil to improve the lubrication condition of the dustproof ring and the piston rod. The dust scraping lip on the outer side of the dustproof ring body provides the best contact pressure to scrape the residual oil film, and the sealing lip ensures the best sealing performance. The combination of the two improves the dustproof and waterproof performance. Therefore, the problem of elastic fatigue of the lip after long-term use in the prior art is solved, the recovery performance is improved, and the use effect is improved. The practicality of the device is improved.

[0015] 2. In the utility model, the scraper one and the scraper two in the dust scraping lip are used to scrape dust and impurities more effectively when the piston rod moves, enhance the dust scraping effect, and reduce the probability of impurities entering the oil cylinder. The clamping block and the spring are combined to achieve clamping effect, which makes the installation and replacement of the scraper more convenient, and the practicality of the device is improved. DRAWINGS

[0016] Figure 1 A three-dimensional structure diagram of the oil cylinder dustproof ring with waterproof function is provided.

[0017] Figure 2 A connection cylinder part structure section view diagram of the oil cylinder dustproof ring with waterproof function is provided.

[0018] Figure 3 is Figure 2 an enlarged view of the middle A;

[0019] Figure 4 is a part structure schematic view of the scraper with the waterproof function oil cylinder dustproof ring of the utility model;

[0020] Figure 5 is Figure 4 an enlarged view of the middle B.

[0021] Legend:

[0022] 1, connecting cylinder; 2, piston rod; 3, dustproof ring body; 4, O-ring; 5, notched; 6, groove; 7, gap; 8, scraper one; 9, scraper two; 10, clamping groove; 11, clamping block; 12, inclined plate; 13, fixed frame; 14, installation groove; 15, spring; 16, sealing lip; 17, dust scraping lip. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Referring to Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a dustproof ring of oil cylinder with waterproof function, including the slot 5 of inside opening of connecting cylinder 1, provides the installation position for dustproof ring body 3, ensure that dustproof ring body 3 is placed stably in oil cylinder system, the slot 5 is set up in connecting cylinder 1 inside, the dustproof ring body 3 is set up in the slot 5 inside, the piston rod 2 is slidably connected in connecting cylinder 1 inside, it reciprocating sliding in connecting cylinder 1 inside, in its movement process, will be closely contacted with the dust scraping lip 17 and the sealing lip 16 outside dustproof ring body 3, and the dust scraping lip 17 and the sealing lip 16 are just through the adhesion with piston rod 2, realize the block of dust, impurity and moisture, prevent its from entering the inside of oil cylinder, the clearance 7 is set up in dustproof ring body 3 inside, can buffer the impact force brought by piston rod 2 movement to a certain extent, the recess 6 is set up in dustproof ring body 3 inside, and the recess 6 is used for fixing O ring 4 specially, O ring 4 is fixedly connected in the recess 6, on the one hand, it acts as elastic element, when the lip of dustproof ring body 3 outside appears elastic fatigue because of long -term movement with piston rod 2, and the recovery ability drops, O ring 4 can provide additional elastic force, help the lip to continue closely adhere piston rod 2, maintain good sealing effect, on the other hand, the oil attached to O ring 4 can effectively improve the lubrication condition between dustproof ring and piston rod 2, reduce the friction between both, reduce the degree of wear, the O ring 4 has oil absorption, and the double -lip assembly for playing dustproof sealing is installed in the dustproof ring body 3 outside, and the double -lip assembly includes sealing lip 16, and the sealing lip 16 is arranged in the dustproof ring body 3 outside, and the dust scraping lip 17 is arranged in the dustproof ring body 3 outside, and the dust scraping lip 17 and the sealing lip 16 lower surface are all attached with the piston rod 2 outer wall one side.

[0025] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5The inside of the dust scraping lip 17 is slidably connected with a scraper one 8, the inside of the dust scraping lip 17 is slidably connected with a scraper two 9, the inclination angle of the scraper one 8 and the scraper two 9 is consistent with the dust scraping lip 17, in the movement process of the piston rod 2, the movement direction is inconsistent with the installation inclination direction, so that a certain pressure is generated above, and then the installation is more stable, one end of the scraper one 8 is attached to one side of the outer wall of the piston rod 2, in the movement process of the piston rod 2, the scraper can timely and accurately scrape off the pollutants, plays a supplementary role of the dust scraping lip 17, further guarantees the cleaning effect on the surface of the piston rod 2, one end of the scraper two 9 is attached to one side of the outer wall of the piston rod 2, the inside of the scraper one 8 is provided with a clamping groove 10, one side of the outer wall of the scraper two 9 is fixedly connected with a fixing frame 13, the clamping groove 10 and the fixing frame 13 are matched with each other, and constitute the connection basis of the scraper one 8 and the scraper two 9, one side of the outer wall of the fixing frame 13 is fixedly connected with an inclined plate 12, when the scraper is installed, the inclined surface of the inclined plate 12 can guide the movement of the clamping block 11, the inside of the fixing frame 13 is provided with an installation slot 14, the inside of the installation slot 14 is provided with a spring 15, one end of the spring 15 is fixedly connected with the clamping block 11, the clamping block 11 is slidably connected in the inside of the installation slot 14, the clamping block 11 is matched with the clamping groove 10, through the pressure applied by the spring 15, the always clamped state is realized.

[0026] Working principle: when the piston rod 2 reciprocating motion, the dust scraping lip 17 first of all play a role, because the dust scraping lip 17 and the piston rod 2 outer wall closely, can preliminary scraping the dust, impurities and other pollutants attached to the surface of the piston rod 2, at the same time, the dust scraping lip 17 inside the scraper 8 and the scraper 9 will assist in scraping dust, they tilt angle and the dust scraping lip 17 consistent and one end with the piston rod 2, in the piston rod 2 movement process, because the direction of motion and installation direction is not consistent, so will produce a certain pressure in the upper, in turn, the installation is more stable and the corresponding with the piston rod 2 contact more tightly make the dust scraping effect better, greatly reduce the risk of dust, impurities into the cylinder inside; the fixed frame 13 of the scraper 9 through the spring 15 and the clamping block 11 and the scraper 8 clamping groove 10 cooperation, realize the effect of convenient installation and removal of the scraper 8 and the scraper 9, but also can make the scraper in the process of use, always keep good with the piston rod 2 close state, ensure the stability of the dust scraping effect, specific, the inclined plate 12 on the fixed frame 13 of the scraper 9 can guide the installation action, when installation, the clamping block 11 due to the effect of inclined surface, the clamping block 11 compression spring 15, the clamping block 11 and the scraper 8 alignment, push into the fixed frame 13, until the spring 15 reset and push the clamping block 11 clamping groove 10, complete the connection of the scraper 8 and the scraper 9; the sealing lip 16 plays a key role in the waterproof and sealing link of the dustproof ring, which is closely attached to the outer wall of the piston rod 2, can effectively prevent the outside moisture into the cylinder inside, ensure that the oil cylinder internal environment is not affected by moisture, prevent moisture caused by hydraulic oil emulsification metamorphism problem; the O ring 4 in the groove 6 inside the dustproof ring body 3 has oil absorption, on the one hand, it can be used as an elastic element, provide additional spring force compensation for the lip, when the lip appears elastic fatigue due to long-term movement with the piston rod 2, the resilience of the O ring 4 can help the lip continue to closely adhere to the piston rod 2, maintain the sealing effect, on the other hand, the oil attached to the O ring 4 can improve the lubrication conditions between the dustproof ring and the piston rod 2, reduce the friction between the lip of the dustproof ring and the piston rod 2, reduce the degree of wear, prolong the service life of the dustproof ring.

[0027] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A waterproof dustproof ring for a hydraulic cylinder, comprising a connecting cylinder (1), characterized in that: The connecting cylinder (1) has a slot (5) inside, and a dustproof ring body (3) is provided inside the slot (5). A piston rod (2) is slidably connected inside the connecting cylinder (1). A gap (7) is provided inside the dustproof ring body (3). A groove (6) is provided inside the dustproof ring body (3). An O-ring (4) is fixedly connected inside the groove (6). The O-ring (4) has oil absorption properties. A double-lip assembly for dustproof sealing is installed on the outside of the dustproof ring body (3).

2. The waterproof dustproof ring for a hydraulic cylinder according to claim 1, characterized in that: The double-lip assembly includes a sealing lip (16), which is located on the outside of the dustproof ring body (3). A dust scraping lip (17) is located on the outside of the dustproof ring body (3). The lower surfaces of the dust scraping lip (17) and the sealing lip (16) are both in contact with one side of the outer wall of the piston rod (2).

3. The oil cylinder dustproof ring with waterproof function according to claim 2, characterized in that: The dust scraper lip (17) is slidably connected to a scraper 1 (8), and the dust scraper 2 (9) is slidably connected to the dust scraper lip (17).

4. The waterproof dustproof ring for a hydraulic cylinder according to claim 3, characterized in that: The tilt angles of scraper one (8) and scraper two (9) are consistent with those of the dust scraper lip (17).

5. A waterproof dustproof ring for a hydraulic cylinder according to claim 4, characterized in that: One end of scraper one (8) is attached to one side of the outer wall of piston rod (2), and one end of scraper two (9) is attached to one side of the outer wall of piston rod (2).

6. A waterproof dustproof ring for a hydraulic cylinder according to claim 5, characterized in that: The scraper one (8) has a slot (10) inside, and a fixing bracket (13) is fixedly connected to one side of the outer wall of the scraper two (9).

7. A waterproof dustproof ring for a hydraulic cylinder according to claim 6, characterized in that: An inclined plate (12) is fixedly connected to one side of the outer wall of the fixed frame (13), and an installation groove (14) is provided inside the fixed frame (13).

8. A waterproof dustproof ring for a hydraulic cylinder according to claim 7, characterized in that: A spring (15) is provided inside the mounting groove (14), and a locking block (11) is fixedly connected to one end of the spring (15). The locking block (11) is slidably connected inside the mounting groove (14).

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