CN212775041U

CN212775041U - Sealing structure for inner plug core of hydraulic cylinder body

Info

Publication number: CN212775041U
Application number: CN202021579172.6U
Authority: CN
Inventors: 李徐成; 徐新良
Original assignee: Hefei Yongke Electromechanical Co ltd
Current assignee: Hefei Yongke Electromechanical Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-23
Anticipated expiration: 2030-08-03

Abstract

The utility model discloses an internal plug core sealing structure of a hydraulic cylinder body, which comprises a plug core body, wherein the bottom of the plug core body is provided with a lower plug core, the top of the plug core body is provided with an upper plug core, the middle part of the plug core body penetrating through the upper wall and the lower wall is provided with a through hole, and the outer wall of the lower plug core is provided with a plurality of first sealing grooves; the utility model has the advantages that: the utility model relates to an inside stopper core seal structure of hydraulic cylinder body, install the sealing washer through two second seal grooves that the first seal groove of a plurality of and stopper core body inner wall that lower stopper core outer wall was seted up, can effectual improvement structure's leakproofness, and the spring through first installation pipe and second installation pipe outer wall suit can effectually play the shock attenuation effect, the cushioning effect can reduce the probability that the sealing washer drops and improve the life of part, the top of first installation pipe and the equal fixed mounting in bottom of second installation pipe have the sealing ring, the sealing ring can the effectual leakproofness that improves the junction, be difficult for taking place the weeping.

Description

Sealing structure for inner plug core of hydraulic cylinder body

Technical Field

The utility model relates to an inside stopper core of hydraulic cylinder body, in particular to inside stopper core seal structure of hydraulic cylinder body.

Background

The existing piston is generally made of a piston core and a rubber ring, the rubber ring is sleeved at the upper section of the piston core, the front end of the rubber ring is contacted with a hydraulic solution, a hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion, the hydraulic cylinder is simple in structure and reliable in operation, a speed reducer can be omitted when the hydraulic cylinder is used for realizing reciprocating motion, a transmission gap does not exist, and the hydraulic cylinder is stable in motion, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inside stopper core seal structure of hydraulic cylinder body to the problem of weeping takes place easily for the inside stopper core of common hydraulic cylinder body who proposes in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a plug core sealing structure in a hydraulic cylinder body comprises a plug core body, wherein a lower plug core is arranged at the bottom of the plug core body, the top of the plug core body is provided with an upper plug core, the middle part of the plug core body penetrating through the upper wall and the lower wall is provided with a through hole, the outer wall of the lower plug core is provided with a plurality of first seal grooves, the outer wall of the upper plug core is provided with two mounting grooves, the bottom of the inner wall of the lower plug core and the top of the inner wall of the upper plug core are both provided with second sealing grooves, the middle part of the inner wall of the plug core body is provided with a first baffle ring, the first baffle ring and the plug core body are of an integrated structure, the bottom and the top of the inner cavity of the plug core body are respectively provided with a first installation pipe and a second installation pipe in a sliding way, the outer wall of first installation pipe and second installation pipe all is equipped with the spring, the equal fixed mounting in top of first installation pipe and the bottom of second installation pipe has the sealing ring.

As a preferred technical scheme of the utility model, the diameter of stopper core is the twice of stopper core down, the top of stopper core and the bottom fixed connection of last stopper core down, just go up stopper core and stopper core formula structure as an organic whole down.

As a preferred technical scheme of the utility model, first installation pipe and second installation pipe are the symmetry setting, just the bottom of first installation pipe and the top threaded connection of second installation pipe.

As an optimal technical scheme of the utility model, one of them the bottom of spring and the top fixed connection of first fender ring, another the top of spring and the bottom fixed connection of first fender ring.

As an optimal technical scheme of the utility model, the top of first installation pipe and the bottom of second installation pipe all are provided with the second and keep off the ring.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to an inside stopper core seal structure of hydraulic cylinder body, install the sealing washer through two second seal grooves that the first seal groove of a plurality of and stopper core body inner wall that lower stopper core outer wall was seted up, can effectual improvement structure's leakproofness, and the spring through first installation pipe and second installation pipe outer wall suit can effectually play the shock attenuation effect, the cushioning effect can reduce the probability that the sealing washer drops and improve the life of part, the top of first installation pipe and the equal fixed mounting in bottom of second installation pipe have the sealing ring, the sealing ring can the effectual leakproofness that improves the junction, be difficult for taking place the weeping.

Drawings

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

FIG. 2 is a schematic view of the internal installation structure of the present invention;

fig. 3 is a schematic structural view of the first installation pipe and the second installation pipe of the present invention.

In the figure: 1. a plug core body; 2. a lower plug core; 3. an upper plug core; 4. a through hole; 5. a first seal groove; 6. mounting grooves; 7. a second seal groove; 8. a first retainer ring; 9. a first mounting tube; 10. a second mounting tube; 11. a spring; 12. a seal ring; 13. and a second retaining ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a sealing structure for an inner plug core of a hydraulic cylinder, which comprises a plug core body 1, a lower plug core 2 is disposed at the bottom of the plug core body 1, an upper plug core 3 is disposed at the top of the plug core body 1, a through hole 4 is disposed at the middle part of the plug core body 1 penetrating through the upper wall and the lower wall, the through hole 4 is used for installing a piston rod, a plurality of first sealing grooves 5 are disposed on the outer wall of the lower plug core 2, two mounting grooves 6 are disposed on the outer wall of the upper plug core 3, the two mounting grooves 6 are used for installing rubber rings, second sealing grooves 7 are disposed at the bottom of the inner wall of the lower plug core 2 and the top of the inner wall of the upper plug core 3, the first sealing grooves 5 and the second sealing grooves 7 are used for installing sealing rings, a first retaining ring 8 is disposed at the middle part of the inner wall of the plug core body 1, the first retaining ring 8 and the plug, the bottom and the top of 1 inner chamber of stopper core body slidable mounting respectively have first installation pipe 9 and second installation pipe 10, first installation pipe 9 and second installation pipe 10 are used for installing the piston rod, the outer wall of first installation pipe 9 and second installation pipe 10 all overlaps and is equipped with spring 11, two springs 11 all are in compression state, spring 11 can play absorbing effect, the equal fixed mounting in top of first installation pipe 9 and the bottom of second installation pipe 10 has sealing ring 12, sealing ring 12 can the effectual leakproofness that improves the junction.

Preferably, the diameter of lower stopper core 2 is the twice of last stopper core 3, so that install the rubber ring at the outer wall of last stopper core 3, the top of lower stopper core 2 and the bottom fixed connection of last stopper core 3, and go up stopper core 2 and lower stopper core 3 formula structure as an organic whole, the stability of stopper core 2 and lower stopper core 3 can be gone up in effectual improvement to integral type structural design, first installation pipe 9 and second installation pipe 10 set up for the symmetry, and the bottom of first installation pipe 9 and the top threaded connection of second installation pipe 10, the bottom of one of them spring 11 and the top fixed connection of first fender ring 8, the top of another spring 11 and the bottom fixed connection of first fender ring 8, the top of first installation pipe 9 and the bottom of second installation pipe 10 all are provided with second fender ring 13, two second fender rings 13 are used for preventing respectively that two springs 11 from droing.

When in specific use, the utility model relates to a sealing structure of a plug core inside a hydraulic cylinder body, a rubber ring sleeve is arranged through two mounting grooves 6 arranged on the outer wall of an upper plug core 3, the sealing rings are arranged through a plurality of first sealing grooves 5 arranged on the outer wall of the lower plug core 2 and two second sealing grooves 7 arranged on the inner wall of the plug core body 1, can effectual improvement structure's leakproofness, and be provided with first fender ring 8 at the middle part of 1 inner wall of stopper core body, first top and the bottom that keeps off ring 8 slidable mounting respectively have first installation pipe 9 and second installation pipe 10, first installation pipe 9 and second installation pipe 10 are used for installing the piston rod, the spring 11 of first installation pipe 9 and the 10 outer wall suits of second installation pipe can effectually play the shock attenuation effect, the equal fixed mounting in top of first installation pipe 9 and the bottom of second installation pipe 10 has sealing ring 12, sealing ring 12 can the effectual leakproofness that improves the junction.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The inner plug core sealing structure of the hydraulic cylinder body comprises a plug core body (1) and is characterized in that a lower plug core (2) is arranged at the bottom of the plug core body (1), an upper plug core (3) is arranged at the top of the plug core body (1), a through hole (4) is formed in the middle of the plug core body (1) penetrating through an upper wall and a lower wall, a plurality of first sealing grooves (5) are formed in the outer wall of the lower plug core (2), two mounting grooves (6) are formed in the outer wall of the upper plug core (3), second sealing grooves (7) are formed in the bottom of the inner wall of the lower plug core (2) and the top of the inner wall of the upper plug core (3), a first retaining ring (8) is arranged in the middle of the inner wall of the plug core body (1), the first retaining ring (8) and the plug core body (1) are of an integrated structure, a first mounting pipe (9) and a second mounting pipe (10) are respectively slidably mounted at the bottom and the top of the inner cavity of, the outer wall of first installation pipe (9) and second installation pipe (10) all overlaps and is equipped with spring (11), the equal fixed mounting in top of first installation pipe (9) and the bottom of second installation pipe (10) has sealing ring (12).

2. The internal plug seal structure of a hydraulic cylinder according to claim 1, wherein: the diameter of the lower plug core (2) is twice that of the upper plug core (3), the top end of the lower plug core (2) is fixedly connected with the bottom end of the upper plug core (3), and the upper plug core (3) and the lower plug core (2) are of an integrated structure.

3. The internal plug seal structure of a hydraulic cylinder according to claim 1, wherein: first installation pipe (9) and second installation pipe (10) are the symmetry setting, just the bottom of first installation pipe (9) and the top threaded connection of second installation pipe (10).

4. The internal plug seal structure of a hydraulic cylinder according to claim 1, wherein: the bottom end of one of the springs (11) is fixedly connected with the top end of the first retaining ring (8), and the top end of the other spring (11) is fixedly connected with the bottom end of the first retaining ring (8).

5. The internal plug seal structure of a hydraulic cylinder according to claim 1, wherein: the top of first installation pipe (9) and the bottom of second installation pipe (10) all are provided with second and keep off ring (13).