CN216044741U

CN216044741U - Double-acting oil leakage prevention oil cylinder body

Info

Publication number: CN216044741U
Application number: CN202122421896.9U
Authority: CN
Inventors: 郁涛俊; 钱宇飞; 丁姚
Original assignee: Jiangsu Sunshine Forging Co ltd
Current assignee: Jiangsu Sunshine Forging Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-03-15
Anticipated expiration: 2031-10-08

Abstract

The utility model relates to the technical field of oil cylinders, in particular to a double-acting oil-pumping-preventing oil cylinder body which comprises a cylinder body main body, a first piston in sliding fit with the inner wall of the cylinder body main body, a second piston in sliding fit with the inner wall of the cylinder body main body and a piston rod, the first piston and the second piston are fixedly connected by a piston rod, a sealing block is projected on the inner wall of the cylinder body main body, the sealing block is positioned between the first piston and the second piston, the left end of the sealing block is provided with a first inclined surface which is inclined inwards from left to right, the right end of the sealing block is provided with a second inclined plane which is inclined inwards from right to left, the sealing block with the inclined plane is additionally arranged in the cylinder body main body, when the piston props against the inclined surface, the fit degree between the piston and the cylinder body main body can be increased along with the increase of the hydraulic oil pressure, so that the hydraulic oil is prevented from leaking into another oil cavity, and the service life of the oil cylinder is prolonged.

Description

Double-acting oil leakage prevention oil cylinder body

Technical Field

The utility model relates to the technical field of oil cylinders, in particular to a double-acting oil blow-by preventing oil cylinder body.

Background

The oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion) for short. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The oil ports A and B at the inlet and outlet of the double-acting cylinder can be communicated with pressure oil or return oil to realize bidirectional movement, so the double-acting cylinder is called as a double-acting cylinder.

In the use of hydro-cylinder, when the piston can't remove, hydraulic oil still can continuously get into a part in the cylinder body main part, and the high pressure that unnecessary hydraulic oil produced makes its crowded production hydraulic oil seepage to another oil intracavity in the gap between piston and the cylinder body main part, influences the life of hydro-cylinder, has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the problems that in the prior art, when the piston cannot move, hydraulic oil still continuously enters a part of the cylinder body main body, the high pressure generated by redundant hydraulic oil extrudes the piston into a gap between the piston and the cylinder body main body to generate hydraulic oil to leak into another oil cavity, the service life of the oil cylinder is influenced, and potential safety hazards exist, the double-acting oil-leakage-preventing oil cylinder body is provided.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a double-acting formula prevents scurrying oil cylinder body, this hydro-cylinder include the cylinder body main part, with cylinder body main part inner wall sliding fit's first piston, with cylinder body main part inner wall sliding fit's second piston and piston rod, the even piston rod fixed connection of first piston and second piston, cylinder body main part inner wall protrusion has sealed piece, sealed piece is located between first piston and the second piston, sealed piece left end has the first inclined plane of turning right leanin by a left side, sealed piece right-hand member has the second inclined plane of turning left leanin by the right side, through the sealed piece that increases the inclined plane in the cylinder body main part, when the piston supported the inclined plane, the laminating degree between piston and the cylinder body main part can increase along with the increase of hydraulic pressure oil pressure to prevent hydraulic pressure oil seepage to another oil cavity, prolong the life of hydro-cylinder.

In order to increase the fitting area of the first piston and the inclined surface of the sealing block and further increase the density, the right end of the first piston is further provided with a third inclined surface matched with the first inclined surface.

In order to increase the fitting area of the second piston and the inclined surface of the sealing block and further increase the density, the right end of the second piston is further provided with a fourth inclined surface matched with the first inclined surface.

The utility model has the beneficial effects that: according to the double-acting oil-leakage-preventing oil cylinder body, the sealing block with the inclined surface is additionally arranged in the cylinder body main body, when the piston abuts against the inclined surface, the fitting degree between the piston and the cylinder body main body can be increased along with the increase of the hydraulic oil pressure, so that the hydraulic oil is prevented from leaking into another oil cavity, and the service life of the oil cylinder is prolonged.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

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

fig. 2 is a schematic diagram of the structure of the use state of the present invention.

In the figure: 1. the piston comprises a cylinder body, a first piston, a third inclined surface, a second piston, a third inclined surface, a second piston, a fourth inclined surface, a piston rod, a sealing block, a first inclined surface, a second inclined surface and a sealing block 51.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, which is a schematic structural diagram of the present invention, a double-acting oil-leakage-preventing cylinder body comprises a cylinder body 1, a first piston 2 in sliding fit with an inner wall of the cylinder body 1, a second piston 3 in sliding fit with an inner wall of the cylinder body 1, and a piston rod 4, wherein the first piston 2 and the second piston 3 are fixedly connected by the piston rod 4, a sealing block 5 protrudes from an inner wall of the cylinder body 1, the sealing block 5 is located between the first piston 2 and the second piston 3, a left end of the sealing block 5 is provided with a first inclined surface 51 inclined from left to right, a right end of the sealing block 5 is provided with a second inclined surface 52 inclined from right to left, and by adding the sealing block 5 with the inclined surface in the cylinder body 1, when the piston abuts against the inclined surface, the attachment degree between the piston and the cylinder body 1 can be increased along with the increase of hydraulic oil pressure, thereby preventing hydraulic oil seepage to another oil intracavity, prolonging the life of hydro-cylinder.

As shown in fig. 2, the right end of the first piston 2 has a third inclined surface 21 which is inclined toward the first inclined surface 51, and the contact area between the first piston 2 and the inclined surface of the seal block 5 is increased, thereby further increasing the density.

As shown in fig. 2, the right end of the second piston 3 has a fourth inclined surface 31 which is matched with the first inclined surface 51, so that the contact area between the second piston 3 and the inclined surface of the seal block 5 is increased, and the density is further increased.

During the use, the cavity that first piston 2 is located is called first oil pocket, the cavity that second piston 3 is located is called the second oil pocket, when hydraulic oil gets into first oil pocket through the first oil inlet on cylinder body 1, promote first piston 2 and remove to the cylinder body 1 right-hand member, the first inclined plane 51 of laminating of third inclined plane 21 of first piston 2, when hydraulic oil gets into the second oil pocket through the second oil inlet on cylinder body 1, promote second piston 3 and remove to the cylinder body 1 left end, the second inclined plane 52 of laminating of fourth inclined plane 31 laminating of second piston 3, after the laminating of the inclined plane of piston and the inclined plane of sealing block 5, the pressure that hydraulic oil produced can increase under continuously promoting, laminating compactness between inclined plane and the inclined plane, thereby improve the leakproofness.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a double-acting formula prevents scurrying oil cylinder body, characterized by, includes cylinder body main part (1), cylinder body main part (1) inner wall protrusion has sealed piece (5), sealed piece (5) left end has by a left side to right side leanin first inclined plane (51), sealed piece (5) right-hand member has by a right side to left side leanin second inclined plane (52).

2. The double-acting oil blow-by prevention cylinder body of claim 1, characterized in that: the oil cylinder further comprises a first piston (2) in sliding fit with the inner wall of the cylinder body main body (1), and a third inclined surface (21) matched with the first inclined surface (51) is arranged at the right end of the first piston (2).

3. The double-acting oil blow-by prevention cylinder body of claim 1, characterized in that: the oil cylinder further comprises a second piston (3) in sliding fit with the inner wall of the cylinder body main body (1), and a fourth inclined surface (31) matched with the first inclined surface (51) in the direction is arranged at the right end of the second piston (3).

4. The double-acting oil blow-by prevention cylinder body of claim 1, characterized in that: the sealing block (5) is located between the first piston (2) and the second piston (3).