CN219492769U - Sealing structure and oil cylinder piston - Google Patents

Abstract

The utility model relates to the technical field of sealing covers, in particular to a sealing structure and an oil cylinder piston, which comprises a piston rod sealing cover sleeved on a rod body of a piston rod, wherein a guide sealing piece is arranged at the top of the piston rod sealing cover; the beneficial effects are as follows: according to the sealing structure and the oil cylinder piston, the piston rod sealing cover is sleeved on the piston rod and then fixed on the shell of the oil cylinder, so that the piston rod receives double sealing of the anti-introduction sealing element and the oil cylinder shell, lubricating oil is filled into the oil storage assembly, and the lubricating oil is smeared on the surface of the piston rod through the oiling assembly, so that the scattering amount of lubricating oil drops is reduced.

Description

Sealing structure and oil cylinder piston

Technical Field

The utility model relates to the field of sealing covers, in particular to a sealing structure and an oil cylinder piston.

Background

The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines.

In the prior art, in the telescopic process of a piston rod of an oil cylinder, the piston rod is in long-term reciprocating telescopic, the problem of abrasion aggravation between a rod body and an oil cylinder shell exists, namely the problem of lubricating oil leakage caused by the fact that a movable outlet gap of the piston rod is enlarged exists. And when the piston rod of the oil cylinder is smeared with lubricating oil, the problem of resource waste caused by large lubricating oil scattering amount exists.

Disclosure of Invention

The utility model aims to provide a sealing structure and an oil cylinder piston, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a seal structure, includes that the sealed cover of piston rod overlaps to be established on the body of rod of piston rod, the top of the sealed lid of piston rod is equipped with leading-in sealing member, and the inside of the sealed lid of piston rod is equipped with the oil storage subassembly, and the interior ring face of the sealed lid of piston rod is equipped with the fat liquoring subassembly, oozes the lubrication oil that the oil storage subassembly inside and flows to the interior ring mouth of the sealed lid of piston rod.

Preferably, the sealing cover of the piston rod is of a circular opening structure with an inner ring opening being a convex circular opening, the outer ring surface of the sealing cover of the piston rod is provided with two groups of grooves, the two groups of grooves are symmetrically distributed relative to the sealing cover of the piston rod, and the clamping screw is in threaded connection with the surface of the grooves.

Preferably, the leading-in sealing member includes extension pipe and sealing washer, and the extension pipe is round platform venturi tube dress structure, and the top surface at the sealed lid of piston rod is fixed to the one end of extension pipe, and the bottom notch diameter of extension pipe is greater than the top notch diameter of extension pipe, and the sealing washer is fixed at the top notch inner ring surface of extension pipe.

Preferably, the outer ring surface of the sealing ring is fixed with a reinforcing sheet, the bottom surface of the reinforcing sheet is fixed on the top surface of the piston rod sealing cover, the reinforcing sheet is provided with a plurality of reinforcing sheets, and the plurality of reinforcing sheets are distributed along the outer ring surface of the extension pipe.

Preferably, the oil storage assembly comprises an oil storage cavity, an oil filling port and a rubber sealing block, the oil storage cavity is an annular groove, the oil storage cavity is arranged in the piston rod sealing cover, the oil filling port is formed in the top surface of the oil storage cavity, and the rubber sealing block is fixed in the oil filling port.

Preferably, the oiling component comprises an embedded groove, a sponge ring, a sponge sleeve, a perforation and a sponge connecting block, wherein the embedded groove is an annular groove and is arranged on the inner annular surface of the piston rod sealing cover, and the outer annular surface of the sponge ring is fixed on the outer annular surface of the embedded groove.

Preferably, the sponge sleeve is a convex pipe, the perforation is arranged on the surface of the oil storage cavity, the perforation is communicated with the embedded groove and the oil storage cavity, the sponge connecting block is inserted in the perforation, and the sponge connecting block is fixed between the sponge sleeve and the sponge ring.

An oil cylinder piston comprises the sealing structure.

Compared with the prior art, the utility model has the beneficial effects that:

according to the sealing structure and the oil cylinder piston, the piston rod sealing cover is sleeved on the piston rod and then fixed on the shell of the oil cylinder, so that the piston rod receives double sealing of the anti-introduction sealing element and the oil cylinder shell, lubricating oil is filled into the oil storage assembly, and the lubricating oil is smeared on the surface of the piston rod through the oiling assembly, so that the scattering amount of lubricating oil drops is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the present utility model in semi-section;

FIG. 3 is a schematic view of the connection structure of the sponge ring and the sponge sleeve.

In the figure: the sealing device comprises a piston rod sealing cover 1, an extension pipe 2, a sealing ring 3, an embedded groove 4, a sponge ring 5, an oil storage cavity 6, an oil filling port 7, a rubber sealing block 8, a sponge sleeve 9, a perforation 10, a sponge connecting block 11, a reinforcing sheet 12, a notch 13 and a clamping screw 14.

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

Example 1

Referring to fig. 1-2, the present utility model provides a technical solution: the sealing structure comprises a piston rod sealing cover 1 which is sleeved on a rod body of a piston rod, wherein a guide-in sealing piece is arranged at the top of the piston rod sealing cover 1, an oil storage component is arranged in the piston rod sealing cover 1, an oiling component is arranged on the inner annular surface of the piston rod sealing cover 1, and lubricating oil stored in the oil storage component is permeated to an inner annular opening of the piston rod sealing cover 1; the piston rod sealing cover 1 is fixed on the shell of the oil cylinder after being sleeved with the piston rod, so that the piston rod receives double sealing of the anti-introduction sealing piece and the oil cylinder shell, lubricating oil is filled into the oil storage assembly, and is smeared on the surface of the piston rod through the oil coating assembly, and the scattering amount of lubricating oil drops is reduced.

Example two

On the basis of the first embodiment, in order to reinforce the installation of the piston rod sealing cover 1 on the cylinder shell, the piston rod sealing cover 1 is of a circular opening structure with an inner ring opening being a convex circular opening, the outer ring surface of the piston rod sealing cover 1 is provided with two groups of grooves 13, the grooves 13 are symmetrically distributed about the piston rod sealing cover 1, and clamping screws 14 are screwed on the surfaces of the grooves 13.

After the inner ring opening of the piston rod sealing cover 1 is sleeved on the piston rod, the piston rod sealing cover 1 is pushed to the shell of the oil cylinder along the piston rod, the screw rod sealing cover 1 is screwed to be connected to the oil cylinder shell in a screw mode, and the screw clamping screw rod 14 is screwed to clamp the oil cylinder shell, so that the piston rod sealing cover 1 is prevented from loosening from the oil cylinder shell.

Example III

On the basis of the second embodiment, in order to realize the sealing after the piston rod sealing cover 1 is inserted into the extension pipe 2, the guiding sealing piece comprises an extension pipe 2 and a sealing ring 3, the extension pipe 2 is of a circular truncated cone-shaped tubular structure, one end of the extension pipe 2 is fixed on the top surface of the piston rod sealing cover 1, the bottom notch diameter of the extension pipe 2 is larger than the top notch diameter of the extension pipe 2, the sealing ring 3 is fixed on the inner annular surface of the top notch of the extension pipe 2, the outer annular surface of the sealing ring 3 is fixed with a reinforcing sheet 12, the bottom surface of the reinforcing sheet 12 is fixed on the top surface of the piston rod sealing cover 1, the reinforcing sheet 12 is provided with a plurality of reinforcing sheets 12, and the reinforcing sheets 12 are distributed along the outer annular surface of the extension pipe 2.

After the piston rod sealing cover 1 is arranged on the cylinder shell, the sealing ring 3 is clamped between the extension pipe 2 and the piston rod, double sealing of the piston rod and the cylinder shell is achieved, the reinforcing sheet 12 not only reinforces the fixation of the extension pipe 2, but also serves as a force application point when the piston rod sealing cover 1 is screwed.

Example IV

Referring to fig. 3, on the basis of the third embodiment, in order to lubricate the piston rod inserted into the inner ring opening of the piston rod sealing cover 1, the oil storage component comprises an oil storage cavity 6, an oil filling opening 7 and a rubber sealing block 8, the oil storage cavity 6 is an annular groove, the oil storage cavity 6 is arranged in the piston rod sealing cover 1, the oil filling opening 7 is arranged on the top surface of the oil storage cavity 6, the rubber sealing block 8 is fixed in the oil filling opening 7, the oil coating component comprises an embedded groove 4, a sponge ring 5, a sponge sleeve 9, a perforation 10 and a sponge connecting block 11, the embedded groove 4 is an annular groove, the embedded groove 4 is arranged on the inner ring surface of the piston rod sealing cover 1, the outer ring surface of the sponge ring 5 is fixed on the outer ring surface of the embedded groove 4, the sponge sleeve 9 is a convex-shaped pipe, the perforation 10 is arranged on the surface of the oil storage cavity 6, the perforation 10 is communicated with the embedded groove 4 and the oil storage cavity 6, the sponge connecting block 11 is inserted into the perforation 10, and the sponge connecting block 11 is fixed between the sponge sleeve 9 and the sponge ring 5.

After the lubricating oil is pumped by the needle tube, the needle tube penetrates through the rubber seal block 8, the lubricating oil is injected into the oil storage cavity 6, and after the lubricating oil permeates the sponge sleeve 9, the sponge connecting block 11 and the sponge ring 5, the lubricating oil is smeared on the surface of the piston rod, so that the dripping quantity of the lubricating oil is reduced.

Example five

An oil cylinder piston comprises a sealing structure.

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

Claims (8)

1. The utility model provides a seal structure, includes that sealed lid (1) of piston rod overlaps to establish on the body of rod of piston rod, its characterized in that: the top of the piston rod sealing cover (1) is provided with a leading-in sealing piece, the inside of the piston rod sealing cover (1) is provided with an oil storage component, the inner annular surface of the piston rod sealing cover (1) is provided with an oiling component, and lubricating oil stored in the oil storage component is permeated to the inner annular opening of the piston rod sealing cover (1).

2. A sealing arrangement according to claim 1, wherein: the piston rod sealing cover (1) is of a circular opening structure with an inner annular opening being a convex circular opening, the outer annular surface of the piston rod sealing cover (1) is provided with a notch (13), the notch (13) is provided with two groups, the two groups of notches (13) are symmetrically distributed relative to the piston rod sealing cover (1), and the clamping screw (14) is in threaded connection with the surface of the notch (13).

3. A sealing arrangement according to claim 1, wherein: the guiding sealing piece comprises an extension pipe (2) and a sealing ring (3), wherein the extension pipe (2) is of a circular truncated cone-shaped pipe mounting structure, one end of the extension pipe (2) is fixed on the top surface of a piston rod sealing cover (1), the diameter of a bottom notch of the extension pipe (2) is larger than that of a top notch of the extension pipe (2), and the sealing ring (3) is fixed on the inner annular surface of the top notch of the extension pipe (2).

4. A seal arrangement according to claim 3, wherein: the outer ring surface of the sealing ring (3) is fixedly provided with reinforcing sheets (12), the bottom surface of the reinforcing sheets (12) is fixed on the top surface of the piston rod sealing cover (1), the reinforcing sheets (12) are provided with a plurality of reinforcing sheets (12) which are distributed along the outer ring surface of the extension pipe (2).

5. A sealing arrangement according to claim 1, wherein: the oil storage assembly comprises an oil storage cavity (6), an oil filling port (7) and a rubber sealing block (8), wherein the oil storage cavity (6) is an annular groove, the oil storage cavity (6) is arranged in the piston rod sealing cover (1), the oil filling port (7) is arranged on the top surface of the oil storage cavity (6), and the rubber sealing block (8) is fixed in the oil filling port (7).

6. A sealing arrangement according to claim 1, wherein: the oiling component comprises an embedded groove (4), a sponge ring (5), a sponge sleeve (9), a perforation (10) and a sponge connecting block (11), wherein the embedded groove (4) is an annular groove, the embedded groove (4) is formed in the inner annular surface of the piston rod sealing cover (1), and the outer annular surface of the sponge ring (5) is fixed on the outer annular surface of the embedded groove (4).

7. A seal arrangement according to claim 6, wherein: the sponge sleeve (9) is a convex-shaped pipe, the perforation (10) is formed in the surface of the oil storage cavity (6), the perforation (10) is communicated with the embedded groove (4) and the oil storage cavity (6), the sponge connecting block (11) is inserted into the perforation (10), and the sponge connecting block (11) is fixed between the sponge sleeve (9) and the sponge ring (5).

8. An oil cylinder piston, which is characterized in that: a sealing structure comprising any of the above claims 1-7.