CN212564360U

CN212564360U - Cylinder front cover

Info

Publication number: CN212564360U
Application number: CN202021358773.4U
Authority: CN
Inventors: 林兴湖
Original assignee: Zhejiang Xingchen Pneumatic Co ltd
Current assignee: Zhejiang Xingchen Pneumatic Co ltd
Priority date: 2020-07-11
Filing date: 2020-07-11
Publication date: 2021-02-19
Anticipated expiration: 2030-07-11

Abstract

The utility model provides a cylinder protecgulum, includes the lid of tubular structure, and lid one end is equipped with connecting portion, is equipped with the step groove on the inner wall of the lid other end, the step inslot is equipped with the scraping ring, be equipped with the elastic support circle between scraping ring and the step groove, step groove end portion is equipped with carries out the spacing dirt proof boot of axial to the scraping ring, still be equipped with first annular and second annular on the lid inner wall, all be equipped with the sealing washer in first annular and the second annular, be equipped with the third annular between first annular and the second annular, be equipped with the oil seepage circle on the third annular. The utility model discloses when the piston rod is flexible, strike off the oily liquid and the colloidal impurity on piston rod surface through the scraping ring, then scribble one deck lubricating oil through the oil impregnate circle, can reduce the sliding friction power between piston rod and the sealing washer, scrape dirt effect and lubricity good, improved the cylinder life-span.

Description

Cylinder front cover

Technical Field

The utility model relates to a cylinder field especially relates to a cylinder protecgulum.

Background

The cylinder protecgulum is used for cooperating the flexible of piston rod, but the leakproofness of current cylinder protecgulum is relatively poor, and traditional cylinder protecgulum is at front end installation plastic ring usually for at the flexible in-process of piston rod, clear up adnexed miscellaneous dirt on the piston rod periphery wall, avoid miscellaneous dirt to get into inside the cylinder, it can effectively clear away dust class granule impurity, nevertheless is not ideal to the cleaning effect of oily liquid and gelatinoid impurity.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide a cylinder protecgulum, the lubricity is good and scrape dirt effectual.

The utility model provides a technical scheme that its technical problem adopted: an air cylinder front cover comprises a cover body with a cylindrical structure, wherein one end of the cover body is provided with a connecting part, the inner wall at the other end of the cover body is provided with a step groove, a scraping ring is arranged in the step groove, an elastic supporting ring is arranged between the scraping ring and the step groove, the end part of the step groove is provided with a dustproof sleeve for axially limiting the scraping ring, the scraping ring comprises an upper arc-shaped scraper and a lower arc-shaped scraper, gaps are arranged between the two ends of the upper arc-shaped scraper and the two ends of the lower arc-shaped scraper, the inner side surfaces of the upper arc-shaped scraper and the lower arc-shaped scraper are provided with at least three convex patterns, the inner wall of the cover body is also provided with a first annular groove and a second annular groove, sealing rings are respectively arranged in the first annular groove and the second annular groove, a third annular groove is arranged between the first annular groove and the second annular groove, an oil seepage ring, the other end of the oil guide pipe is connected with an oil seepage ring.

Through the technical scheme, the dustproof sleeve can reduce air dust entering between the piston rod and the cover body, the scraping ring is arranged in the cover body, the inner side surface of the scraping ring can be attached to the surface of the piston rod under the action of the elastic support ring, and when the piston rod stretches, the oil liquid and colloidal impurities on the surface of the piston rod are scraped by the convex patterns, so that the cleanness of the interior of the cylinder is ensured, and the service life of the cylinder is prolonged; when the piston rod passes through the oil seepage ring, a layer of lubricating oil is coated on the surface of the piston rod, so that the sliding friction force between the piston rod and the sealing ring can be reduced, the piston rod can stretch more smoothly, the sealing ring is not easy to wear, the service life of the sealing ring is prolonged, and the sealing performance is improved.

In order to further improve the structure, the oil penetrating ring consists of an outer hollow ring and an inner penetrating pad, a plurality of oil penetrating holes are formed in the circumferential direction of the inner side of the hollow ring respectively, and lubricating oil in the hollow ring reaches the penetrating pad through the oil penetrating holes and is evenly coated on the surface of the piston rod through the penetrating pad.

The damping mechanism comprises a damping washer and a supporting washer for fixing the damping washer, a plurality of guide pillars are circumferentially and uniformly distributed on one side of the supporting washer, a guide hole is formed in the end face of the connecting portion corresponding to the guide pillars and is in sliding connection with the guide pillars in a matched mode, a damping spring is arranged in the guide hole, a limiting clamping groove is formed in each guide pillar, a limiting screw is arranged on the side portion of the connecting portion, and the inner end of the limiting screw is located in the limiting clamping groove.

Through above-mentioned technical scheme, when the piston rod stretches out, damper on the lid cushions the piston of piston rod through damping washer and damping spring, and the shock attenuation effect is stronger, has reduced the impulsive force of piston to the cylinder protecgulum, has improved the life-span of cylinder.

Further perfection, be equipped with the oil storage box fixed slot on the lid.

Further perfect, be threaded connection between dirt proof boot and the step groove, dirt proof boot one end is equipped with the flange, makes things convenient for the installation and the dismantlement of dirt proof boot, and the flange also can protect the lid tip.

Further perfection, the inner end face of the dustproof sleeve is close to the side face of the scraping ring, and the scraping ring is fixed.

Further perfect, be equipped with the cotton circle of dust removal on the dirt proof boot, can improve the dustproof effect of dirt proof boot, the cotton circle diameter of dust removal is less than the dirt proof boot inner bore diameter, and the cotton circle of dust removal can be when the piston rod retracts and tentatively clear up the spot on piston rod surface.

The utility model discloses profitable effect is: 1. the utility model is provided with the dustproof sleeve and the scraping ring, the dustproof sleeve can reduce air dust from entering between the piston rod and the cover body, the inner side surface of the scraping ring can be attached to the surface of the piston rod under the action of the elastic supporting ring, and when the piston rod stretches, the burr on the inner side surface of the scraping ring scrapes off oily liquid and colloidal impurities on the surface of the piston rod, so that the cleanness inside the cylinder is ensured, and the service life of the cylinder is prolonged; 2. the utility model discloses a two sealing washer intervals set up, the leakproofness when cylinder protecgulum and piston rod cooperate has been improved, and be equipped with the oil seepage circle between two sealing washers, the piston rod is when the oil seepage circle after frizing and removing dust, one deck lubricating oil can be scribbled on the surface, can reduce the sliding friction power between piston rod and the sealing washer, it is more smooth and easy to make the piston rod flexible, the sealing washer is difficult to wear and tear, the life-span of sealing washer has been prolonged, sealing performance has also been improved, 3, be equipped with damper on the lid, cushion the piston of piston rod through damping washer and damping spring, the shock attenuation effect is stronger, the impulsive force of piston to the cylinder protecgulum has been reduced, the life-span of cylinder has been improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view taken along the line A-A;

FIG. 3 is an enlarged view of the scraper ring of FIG. 1;

description of reference numerals: 1. the cover body, 11, connecting portion, 12, the step groove, 13, first annular groove, 14, the second annular groove, 15, the third annular groove, 16, lead the oilhole, 17, the guide hole, 18, stop screw, 19, the oil storage box fixed slot, 2, the scraping ring, 21, the burr, 3, the elastic support circle, 4, the dirt proof boot, 41, the flange, 42, the dust removal cotton circle, 5, the sealing washer, 6, the oil seepage circle, 61, the hollow circle, 62, the infiltration pad, 63, the oil penetration hole, 7, lead oil pipe, 8, the oil storage box, 9, damper, 91, damping washer, 92, supporting washer, 93, the guide pillar, 931, the spacing draw-in groove, 94, damping spring.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

with reference to the accompanying drawings: the cylinder front cover in this embodiment includes the lid 1 of tubular structure, and lid 1 one end is equipped with connecting portion 11, is equipped with step groove 12 on the inner wall of the lid 1 other end, characterized by: be equipped with scraping ring 2 in the step groove 12, be equipped with elastic support circle 3 between scraping ring 2 and the step groove 12, step groove 12 tip is equipped with and carries out axial spacing dirt proof boot 4 to scraping ring 2, be equipped with three at least burr 21 on the medial surface of scraping ring 2, still be equipped with first annular 13 and second annular 14 on the 1 inner wall of lid, all be equipped with sealing washer 5 in first annular 13 and the second annular 14, be equipped with third annular 15 between first annular 13 and the second annular 14, be equipped with oil seepage circle 6 on the third annular 15, 15 upsides in third annular are equipped with leads oil hole 16, are equipped with in leading oil hole 16 and lead oil pipe, lead oil pipe one end and be connected with the oil storage box, lead the oil pipe other end and connect oil seepage circle 6. The oil seepage ring 6 is composed of an outer layer hollow ring 61 and an inner layer seepage pad 62, a plurality of oil penetration holes 63 are respectively formed in the circumferential direction of the inner side of the hollow ring 61, lubricating oil in the hollow ring 61 reaches the seepage pad 62 through the oil penetration holes 63, and then the lubricating oil is uniformly smeared on the surface of the piston rod through the seepage pad 62.

The dustproof sleeve 4 can reduce air dust entering between the piston rod and the cover body 1, the scraping ring 2 is arranged in the cover body 1, the inner side face of the scraping ring 2 can be attached to the surface of the piston rod under the action of the elastic support ring 3, and when the piston rod stretches, the convex patterns 21 scrape oily liquid and colloidal impurities on the surface of the piston rod, so that the cleanness of the interior of the cylinder is ensured, and the service life of the cylinder is prolonged; when the piston rod passes through the oil seepage ring 6, a layer of lubricating oil is coated on the surface of the piston rod, so that the sliding friction force between the piston rod and the sealing ring can be reduced, the piston rod can stretch more smoothly, the sealing ring is not easy to wear, the service life of the sealing ring is prolonged, and the sealing performance is improved.

Be equipped with damper 9 on the terminal surface of connecting portion 11, damper 9 includes damping washer 91 and the supporting washer 92 of fixed damping washer 91, and supporting washer 92 one side is equipped with the guide pillar 93 of a plurality of circumference equipartitions, the terminal surface of connecting portion 11 corresponds guide pillar 93 and is equipped with guide hole 17, guide hole 17 and guide pillar 93 cooperation sliding connection, be equipped with damping spring 94 in the guide hole 17, be equipped with spacing draw-in groove 931 on the guide pillar 93, connecting portion 11 lateral part is equipped with stop screw 18, and stop screw 18 the inner is located spacing draw-in groove 931, and when the piston rod stretches out, damper 9 on the lid 1 cushions the piston of piston rod through damping washer 91 and damping spring 94, and the shock attenuation effect is stronger, has reduced the impulsive force of piston to the cylinder protecgulum, has improved the life-.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a cylinder protecgulum, includes lid (1) of tubular structure, and lid (1) one end is equipped with connecting portion (11), is equipped with step groove (12), characterized by on the inner wall of the lid (1) other end: a scraping ring (2) is arranged in the step groove (12), an elastic support ring (3) is arranged between the scraping ring (2) and the step groove (12), the end part of the step groove (12) is provided with a dustproof sleeve (4) which axially limits the scraping ring (2), at least three convex patterns (21) are arranged on the inner side surface of the scraping ring (2), a first annular groove (13) and a second annular groove (14) are also arranged on the inner wall of the cover body (1), sealing rings (5) are arranged in the first annular groove (13) and the second annular groove (14), a third ring groove (15) is arranged between the first ring groove (13) and the second ring groove (14), an oil seepage ring (6) is arranged on the third ring groove (15), an oil guide hole (16) is formed in the upper side of the third annular groove (15), an oil guide pipe (7) is arranged in the oil guide hole (16), one end of the oil guide pipe (7) is connected with an oil storage box (8), and the other end of the oil guide pipe (7) is connected with an oil seepage ring (6).

2. A cylinder head according to claim 1, wherein: the oil seepage ring (6) is composed of an outer layer hollow ring (61) and an inner layer seepage pad (62), and a plurality of oil penetration holes (63) are formed in the circumferential direction of the inner side of the hollow ring (61).

3. A cylinder head according to claim 1, wherein: be equipped with damper (9) on the terminal surface of connecting portion (11), damper (9) are equipped with guide pillar (93) of a plurality of circumference equipartitions including damping washer (91) and supporting washer (92) of fixed damping washer (91), supporting washer (92) one side, the terminal surface of connecting portion (11) corresponds guide pillar (93) and is equipped with guide hole (17), guide hole (17) and guide pillar (93) cooperation sliding connection, be equipped with damping spring (94) in guide hole (17), be equipped with spacing draw-in groove (931) on guide pillar (93), connecting portion (11) lateral part is equipped with stop screw (18), and stop screw (18) inner is located spacing draw-in groove (931).

4. A cylinder head according to claim 1, wherein: an oil storage box fixing groove (19) is formed in the cover body (1).

5. A cylinder head according to claim 1, wherein: the dustproof sleeve (4) is in threaded connection with the step groove (12), and a flange (41) is arranged at one end of the dustproof sleeve (4).

6. A cylinder head according to claim 1, wherein: the inner end face of the dustproof sleeve (4) is close to the side face of the scraping ring (2).

7. A cylinder head according to claim 1, wherein: the dust-removing cotton ring (42) is arranged on the dust-proof sleeve (4), and the diameter of the dust-removing cotton ring (42) is smaller than that of the inner hole of the dust-proof sleeve (4).