CN211117589U

CN211117589U - Piston rod dust ring

Info

Publication number: CN211117589U
Application number: CN201921663704.1U
Authority: CN
Inventors: 胡雪; 张水祥; 谭文俊; 莫恭武
Original assignee: Jiangsu World High Tech Agricultural Equipment Co Ltd
Current assignee: Jiangsu World High Tech Agricultural Equipment Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-28
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a piston rod dust ring, include: the metal framework is embedded at the front end of the dustproof sleeve, and a sealing plug is fixedly arranged in the metal framework; the sealing plug is flush with one end of the dustproof sleeve, and an isolating plug is arranged on the side edge of the sealing plug; the isolating plug is of a trapezoidal structure, and the inner side of the top end of the isolating plug is attached to the outer surface of the piston rod; the utility model discloses a combined action of return force pole and isolation stopper forms bielastic dust ring, make isolation stopper and piston rod surface contact more tight, no matter all have fine dustproof effect under the operating mode of ultra-low temperature or the operating mode of mud ground, and bielastic effect, when making isolation stopper lose elasticity, the effect of the elastic recovery power of return force pole can have better compaction effect to isolation stopper equally, the life that makes dust ring is longer, the effectual cost-push who changes dust ring and cause that reduces the ordinary.

Description

Piston rod dust ring

Technical Field

The utility model relates to an oil cylinder sealing technical field especially relates to a piston rod dust ring.

Background

The hydro-cylinder needs the operation of motion execution hydro-cylinder through the piston rod at the during operation, the piston rod is difficult to completely isolated with external environment when stretching out in flexible motion, especially when the place that the operating mode is complicated carries out the operation, it still needs to clear up the attachment not only to prevent dust, at present, mainly adopt the mode shown in FIG. 3 to prevent dust the processing to the piston rod, this kind of mode is only dustproof to the piston rod through the material characteristics of dust ring self, after advancing the wearing and tearing, the dust ring loses this dust ring of elasticity and is become invalid promptly, need more renew the dust ring, make whole cost increase like this, it is extravagant serious, therefore, how improve the structure and the mode of dust ring, it is to make the dust ring have longer life-span and better dustproof effect the utility model discloses the problem that needs to solve.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide a piston rod dust ring that overcomes or at least partially solves the above problems to solve the problem of short life and easy failure of the dust ring.

In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:

the utility model provides a piston rod dust ring, piston rod outside cover is equipped with the dirt proof boot, dirt proof boot and piston rod clearance fit, include:

the metal framework is embedded at the front end of the dustproof sleeve, and a sealing plug is fixedly arranged in the metal framework;

the sealing plug is flush with one end of the dustproof sleeve, and an isolating plug is arranged on the side edge of the sealing plug;

the isolation plug is of a trapezoidal structure, and the inner side of the top end of the isolation plug is attached to the outer surface of the piston rod.

As a further aspect of the present invention, the metal framework has a return bar at one end, and the end point of the return bar is bent toward the center line of the metal framework.

As a further aspect of the present invention, the metal frame is inserted inside the sealing plug, and the metal frame has reverse elasticity.

As a further aspect of the utility model, the isolation stopper is acute angle contained angle with the projection of piston rod central line, and the isolation stopper is line contact with the piston rod, and the isolation stopper has the elasticity to the piston rod direction.

The utility model provides a piston rod dust ring, beneficial effect lies in: the utility model discloses a combined action of return force pole and isolation stopper forms bielastic dust ring, make isolation stopper and piston rod surface contact more tight, no matter all have fine dustproof effect under the operating mode of ultra-low temperature or the operating mode of mud ground, and bielastic effect, when making isolation stopper lose elasticity, the effect of the elastic recovery power of return force pole can have better compaction effect to isolation stopper equally, the life that makes dust ring is longer, the effectual cost-push who changes dust ring and cause that reduces the ordinary.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a half-section structure of a side surface of an overall structure provided by an embodiment of the present invention.

Fig. 2 is an enlarged schematic structural diagram of a position a in fig. 1 according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a half-section structure of a conventional dust ring.

In the figure: 1. a piston rod; 2. a dust-proof sleeve; 3. a dust ring; 31. a metal skeleton; 311. a return bar; 32. a sealing plug; 33. and (4) isolating the plug.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Fig. 1 and fig. 2 show a piston rod dust ring that the embodiment of the utility model provides, it is shown with fig. 2 to refer to, the embodiment of the utility model provides a piston rod dust ring, 1 outside cover of piston rod are equipped with dirt proof boot 2,

dirt proof boot

2 and 1 clearance fit of piston rod, include: metal framework 31, sealing plug 32 and isolation stopper 33, metal framework 31 inlays the front end at dirt proof boot 2, the inside still fixed sealing plug 32 that is equipped with of metal framework 31,

sealing plug

32 and 2 one end parallel and level of dirt proof boot, be equipped with isolation stopper 33 on the sealing plug 32 side, isolation stopper 33 is the trapezium structure, the inboard and the laminating of piston rod 1 surface in isolation stopper 33 top, isolation stopper 33 is the acute angle contained angle with the projection of 1 central line of piston rod, isolation stopper 33 is the line contact with piston rod 1, isolation stopper 33 has the elasticity to 1 direction of piston rod, elastic isolation stopper 33 has a power that compresses tightly to piston rod 1 all the time, it is dustproof through isolation stopper 33 between messenger's piston rod 1 and the dirt proof boot 2.

The one end of metal framework 31 is equipped with return force pole 311, the central line bending of return force pole 311 extreme point to metal framework 31, metal framework 31 inserts inside sealing plug 32, metal framework 31 has reverse elasticity, metal framework 31's elasticity extrusion sealing plug 32, sealing plug 32 continues the laminating with the piston rod 1 surface with the isolation stopper 33 that the elastic force of wearing and tearing descends, dirt proof boot 2 makes sealing plug 32 fix corresponding position all the time with the cooperation of return force pole 311, do not return and make the dust ring drop because of the concertina movement of piston rod 1.

The dust ring is made of polyurethane materials, the hardness is improved to be 90 Shore hardness, the dust ring 3 is assembled by adopting a press-fitting process, ice and snow are covered on the surface of the piston rod 1 when the piston rod 1 is exposed in the air under the working condition of northeast ultralow temperature, the framework dust ring 3 can play a good dustproof effect when the piston rod 1 operates repeatedly, and the service life of the dust ring 3 is prolonged; under the working condition that the oil cylinder is used in paddy field mud fields in the south of the Yangtze river, mud covers the surface of the piston rod 1 when the piston rod is exposed in the air, the framework dust ring 3 also has a good dustproof effect when the piston rod 1 operates repeatedly, and the service life is prolonged.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a piston rod dirt ring, piston rod (1) outside cover is equipped with dirt proof boot (2), dirt proof boot (2) and piston rod (1) clearance fit, its characterized in that includes:

the metal framework (31), the metal framework (31) is embedded at the front end of the dustproof sleeve (2), and a sealing plug (32) is fixedly arranged in the metal framework (31);

the sealing plug (32), the said sealing plug (32) is flush with one end of the dust-proof cover (2), there are isolating plugs (33) on the side of the sealing plug (32);

keep apart stopper (33), keep apart stopper (33) and be the trapezium structure, keep apart stopper (33) top inboard and piston rod (1) surface laminating.

2. The piston rod dust ring according to claim 1, characterized in that one end of the metal framework (31) is provided with a return rod (311), and the end point of the return rod (311) is bent towards the center line of the metal framework (31).

3. Piston rod wiper according to claim 2, characterized in that the metal skeleton (31) is inserted inside the sealing plug (32), the metal skeleton (31) having an inverted elasticity.

4. The piston rod dust ring according to claim 1, characterized in that the projection of the isolating plug (33) and the center line of the piston rod (1) forms an acute included angle, the isolating plug (33) and the piston rod (1) are in line contact, and the isolating plug (33) has elasticity towards the piston rod (1).