CN216199410U

CN216199410U - Novel oil cylinder piston sealing structure

Info

Publication number: CN216199410U
Application number: CN202122445562.5U
Authority: CN
Inventors: 孙义军; 杨恒; 朱立伟; 葛俊浪
Original assignee: Jiangsu Sanzhou Machinery Technology Co ltd
Current assignee: Jiangsu Sanzhou Machinery Technology Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-04-05
Anticipated expiration: 2031-10-11

Abstract

A novel oil cylinder piston sealing structure comprises a cylinder body, wherein an oil inlet is formed in one side of the upper end of the cylinder body, an oil outlet is formed in one side, away from the oil inlet, of the cylinder body, a piston rod is inserted into one side of the cylinder body, two limiting rings are fixedly connected to the piston rod, two baffle plates are arranged between the two limiting rings, rubber rings are fixedly connected to one sides, opposite to the two baffle plates, of the piston rod, the baffle plates on the other side can be extruded when the oil inlet and the oil outlet are in an extruded state from two sides, so that an extrusion structure is formed, the two rubber rings can be extruded and deformed, air can be driven to enter an annular air cushion, the cylinder body can be extruded, the sealing effect is greatly improved, and meanwhile, a packing is matched, so that the problems that the sealing structure of a novel oil cylinder piston in the current stage is less, and the sealing structure on the piston rod is easy to cause to be less after long-time use are solved; meanwhile, through the triple sealing structure, the problems of oil liquid intercommunication and poor effect of converting pressure into mechanical energy can be greatly reduced.

Description

Novel oil cylinder piston sealing structure

Technical Field

The utility model relates to the technical field of oil cylinder pistons, in particular to a novel oil cylinder piston sealing structure.

Background

The oil cylinder converts pressure into mechanical energy by utilizing oil liquid transmission so as to form a reciprocating motion process, and the oil cylinder is utilized for mechanical motion, so that energy loss can be greatly reduced, and the operation is very stable.

The piston sealing structure for the novel oil cylinder at the present stage is less, the sealing structure on the piston is easily worn after the piston is used for a long time, and meanwhile, after the sealing structure on the piston is less damaged, oil is easily communicated, so that the pressure conversion effect is poor.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are as follows: the piston sealing structure for the novel oil cylinder at the present stage is less, the sealing structure on the piston is easily abraded after the piston is used for a long time, and meanwhile, the sealing structure on the piston is less.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides a novel oil cylinder piston seal structure, includes the cylinder body, the oil inlet has been seted up to cylinder body upper end one side, the oil-out has been seted up to one side that the oil inlet was kept away from to the cylinder body, it has the piston rod to peg graft in cylinder body one side, two spacing rings of fixedly connected with on the piston rod, two be provided with two baffles, two between the spacing ring the equal fixedly connected with rubber circle in one side that the baffle is relative.

According to a preferable technical scheme of the utility model, the baffle plate is provided with a first through hole, a spring is inserted in the first through hole, one end of the spring is fixedly connected with a limiting plate, a limiting rod is fixedly connected between the two limiting plates to extrude the two baffle plates, and a gap is formed between the two baffle plates under the condition that the two baffle plates are not managed, so that the sealing effect is improved.

As a preferred technical scheme of the utility model, an annular groove is formed in the rubber ring, four second through holes are uniformly formed in one side of the rubber ring, which is located on the annular groove, the annular groove is communicated with the second through holes, the rubber ring is fixedly connected with the baffle plate, the rubber ring is stressed and mutually extruded, so that elastic deformation is formed, the contact area with the inside of the cylinder body is increased, and gas in the gap is extruded into the second through holes.

As a preferable technical scheme of the utility model, the baffle plate is provided with a funnel groove, the baffle plate is internally provided with four vent holes, the vent holes are communicated with the funnel groove, and when the two baffle plates are close to each other, the air can be extruded constantly and transmitted to the vent holes.

According to the preferable technical scheme, two sealing grooves are formed in the outer side of the baffle, an annular air cushion is arranged on the outer side of the vent hole and communicated with the vent hole, the annular air cushion is located in one sealing groove, a packing is connected to the inner side of the other sealing groove in an adhesive mode, the packing prevents oil from leaking, and therefore the sealing effect of the oil cylinder is improved.

The utility model has the following advantages: when the oil inlet and outlet from two sides of the piston rod are in an extruded state, the baffle plate on the other side is extruded, so that an extrusion structure is formed, two rubber rings can drive air to enter the annular air cushion when being extruded and deformed, the cylinder body can be extruded, the sealing effect is greatly improved, and meanwhile, the problems that the sealing structure of a piston for a novel oil cylinder is less at the present stage, and the sealing structure on the piston rod is easy to be less after long-term use are solved by matching with a packing; meanwhile, through the triple sealing structure, the problems of oil liquid intercommunication and poor effect of converting pressure into mechanical energy can be greatly reduced.

Drawings

FIG. 1 is a schematic cross-sectional side view of a novel cylinder piston seal structure according to a preferred embodiment of the present invention;

fig. 2 is a schematic three-dimensional structure diagram of a novel oil cylinder piston sealing structure according to a preferred embodiment of the utility model;

fig. 3 is an enlarged schematic structural view of a position a of a novel oil cylinder piston sealing structure according to a preferred embodiment of the utility model.

Description of reference numerals: 1. a cylinder body; 2. an oil inlet; 3. an oil outlet; 4. a piston rod; 5. a limiting ring; 6. a baffle plate; 7. a first through hole; 8. a spring; 9. a limiting plate; 10. a limiting rod; 11. a rubber ring; 12. an annular groove; 13. a second through hole; 14. a funnel groove; 15. a vent hole; 16. a sealing groove; 17. an annular air cushion; 18. and (7) packing.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model will be further explained with reference to the drawings.

Please refer to a novel oil cylinder piston sealing structure shown in fig. 1-3 in combination, which comprises a cylinder body 1, an oil inlet 2 is provided at one side of the upper end of the cylinder body 1, a back and forth oil supply is performed through the oil inlet 2 and the oil outlet 3, a compression structure is formed, the oil outlet 3 is provided at one side of the cylinder body 1 far away from the oil inlet 2, a piston rod 4 is inserted into one side of the cylinder body 1, two limit rings 5 are fixedly connected to the piston rod 4, the movement of the two baffles 6 is limited by the limit rings 5, two baffles 6 are provided between the two limit rings 5, a rubber ring 11 is fixedly connected to one side of the two baffles 6 opposite to each other, and the rubber ring 11 is elastically deformed by extrusion, thereby being convenient to seal.

Wherein, first through-hole 7 is located baffle 6, and spring 8 is pegged graft in first through-hole 7, limiting plate 9 be located first through-hole 7 and with 8 one end fixed connection of spring, gag lever post 10 fixed connection between two limiting plates 9 can extrude two baffles 6 for appear the clearance between two baffles 6, promote sealed effect.

Wherein, annular groove 12 is located rubber circle 11, and four second through-holes 13 have been seted up to rubber circle 11 one side, and second through-hole 13 communicates with each other with annular groove 12, can make things convenient for gas transmission, fixedly connected with rubber circle 11 on baffle 6, and two rubber circles 11 are corresponding, and 11 atresss of rubber circle extrude each other to form elastic deformation, promote and the 1 inside area of contact of cylinder body, make the gaseous extrusion in the interval get into in the second through-hole 13.

Wherein, funnel recess 14 communicates with each other with air vent 15, and air vent 15 is provided with four, and air vent 15 is located baffle 6, and air vent 15 communicates with each other with funnel recess 14, through air vent 15 and the connection of funnel recess 14, can form stable ventilation structure to when two baffles 6 are close to mutually, can invariably extrude the air and put air transmission in air vent 15 department.

Wherein, seal groove 16 is located the baffle 6 outside, and seal groove 16 is provided with two, and annular air cushion 17 is located one of them seal groove 16, and packing 18 is located another seal groove 16, and air vent 15 communicates with each other with annular air cushion 17 simultaneously, and rubber circle 11 and baffle 6 cooperation realize sealed, through filling gas extrusion cylinder body inner wall in the annular air cushion 17, cooperate packing 18 to stop the fluid seepage simultaneously to promote the sealed effect of hydro-cylinder 1.

Specifically, when the novel oil cylinder moves, oil enters the extrusion baffle 6 from one side of the oil inlet 2, the baffle 6 moves to one side of the piston rod 4 to extrude the limiting rod 10, then the springs 8 in the two first through holes 7 shrink, the limiting rings 5 are arranged on two sides to block the baffle 6, so that extrusion is formed, the rubber ring 11 can be sealed, the two baffle plates 6 are stopped at the minimum distance when the limiting contraction distance is reached, so that the two rubber rings 11 are attached and mutually extruded, the internal air is driven to enter the second through hole 13 through the annular groove 12 and enter the annular air cushion 17 through the air vent 15, the annular air cushion 17 is in expansion contact with the inner wall of the cylinder body 1, the inner wall of the cylinder body 1 can be extruded, the elastic deformation caused by mutual extrusion between the rubber rings 11 is matched, so that sealing is convenient, oil leakage is reduced, and meanwhile, a packing 18 is arranged in the other sealing groove 16, can carry out the auxiliary seal, reduce gas leakage.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Other parts of the utility model not described in detail are prior art and are not described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a novel oil cylinder piston seal structure, includes cylinder body (1), its characterized in that, oil inlet (2) have been seted up to cylinder body (1) upper end one side, oil-out (3) have been seted up to one side that oil inlet (2) were kept away from in cylinder body (1), it has piston rod (4) to peg graft in cylinder body (1) one side, two spacing rings (5) of fixedly connected with on piston rod (4), two be provided with two baffle (6), two between spacing ring (5) the equal fixedly connected with rubber circle (11) in one side that baffle (6) are relative.

2. The novel oil cylinder piston sealing structure is characterized in that a first through hole (7) is formed in the baffle (6), a spring (8) is inserted in the first through hole (7), one end of the spring (8) is fixedly connected with a limiting plate (9), and a limiting rod (10) is fixedly connected between the two limiting plates (9).

3. The novel oil cylinder piston sealing structure is characterized in that an annular groove (12) is formed in the rubber ring (11), four second through holes (13) are uniformly formed in one side, located on the annular groove (12), of the rubber ring (11), the annular groove (12) is communicated with the second through holes (13), and the rubber ring (11) is fixedly connected with the baffle (6).

4. A novel oil cylinder piston sealing structure according to claim 1, characterized in that a funnel groove (14) is formed on the baffle plate (6), four vent holes (15) are formed in the baffle plate (6), and the vent holes (15) are communicated with the funnel groove (14).

5. The novel oil cylinder piston sealing structure is characterized in that two sealing grooves (16) are formed in the outer side of the baffle plate (6), an annular air cushion (17) is arranged on the outer side of the vent hole (15), the annular air cushion (17) is communicated with the vent hole (15), the annular air cushion (17) is located in one sealing groove (16), and a packing (18) is connected to the inner portion of the other sealing groove (16) in an adhesive mode.