CN217462717U

CN217462717U - Novel hydraulic cylinder seal structure

Info

Publication number: CN217462717U
Application number: CN202220337018.0U
Authority: CN
Inventors: 马伟东; 郑蜀革
Original assignee: Changsha Xinli Machinery Technology Co ltd
Current assignee: Changsha Xinli Machinery Technology Co ltd
Priority date: 2022-02-20
Filing date: 2022-02-20
Publication date: 2022-09-20
Anticipated expiration: 2032-02-20

Abstract

The utility model discloses a novel hydraulic cylinder seal structure relates to the sealed technical field of hydro-cylinder, now proposes following scheme, including the cylinder, be equipped with the piston rod in the cylinder, and piston rod one end installs two sealing washers, the fixed plate is installed to the piston rod outer wall, and fixed plate one side outer wall is fixed with sealed cushion, the cylinder inner wall is fixed with the limiting plate, and the welding of limiting plate bottom outer wall has the spacing ring. The utility model discloses the piston rod can take sealed cushion to move together when moving, when reacing piston rod stroke farthest point, the spacing ring can press on sealed cushion, extrude sealed cushion, the gap of fixed plate and cylinder inner wall can be filled up by extruded sealed cushion, the external seepage of hydraulic oil has been avoided, effectively improved sealed effect, can play the cushioning effect to piston rod bottom striking cylinder, can avoid hydraulic oil pressure release too fast in the cylinder, lead to piston rod bottom striking increase, avoid hydro-cylinder structural damage.

Description

Novel hydraulic cylinder seal structure

Technical Field

The utility model relates to a cylinder seal technical field especially relates to a novel hydraulic cylinder seal structure.

Background

The hydraulic oil cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). 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. In the current hydraulic cylinder use, the seal structure of being applied to the piston rod simply leads to sealing strength not enough, leads to hydraulic oil to outwards leak easily, when hydraulic cylinder pressure release moreover, produces the clearance between piston and the piston rod, and piston rod bottom striking cylinder leads to hydraulic cylinder structure to damage easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a novel hydraulic oil cylinder sealing structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel hydraulic cylinder seal structure, includes the cylinder, be equipped with the piston rod in the cylinder, and piston rod one end installs two sealing washers, the fixed plate is installed to the piston rod outer wall, and fixed plate one side outer wall is fixed with sealed cushion, the cylinder inner wall is fixed with the limiting plate, and the welding of limiting plate bottom outer wall has the spacing ring.

Preferably, two fixing pieces are installed at one end of the piston rod, and sealing rings are installed on the inner walls of the two fixing pieces.

Preferably, the cross section of the fixing part is of a concave structure.

Preferably, the piston rod is fixed with the blotter near cylinder one side outer wall, and dustproof pad is installed to cylinder one side inner wall.

Preferably, the inner wall of one side of the cylinder barrel is welded with an oil inlet pipe, and the oil inlet pipe is provided with an electromagnetic valve.

The utility model has the advantages that:

1. the piston rod can drive the sealing rubber pad to move together when moving, when the piston rod reaches the farthest point of the stroke of the piston rod, the limiting ring can press the sealing rubber pad to extrude the sealing rubber pad, and the extruded sealing rubber pad can fill the gap between the fixed plate and the inner wall of the cylinder barrel, so that the outward leakage of hydraulic oil is avoided, and the sealing effect is effectively improved;

2. through the sealed effect of the further hydro-cylinder of strengthening of two sealing washers that set up, can prevent effectively through the dustproof pad that sets up that the external dust of hydro-cylinder from getting into the hydro-cylinder and polluting hydraulic oil, can be when the hydro-cylinder pressure release through the blotter that sets up, piston rod bottom striking cylinder plays the cushioning effect, and flow in the steerable oil feed pipe of solenoid valve through setting up avoids hydraulic oil pressure release too fast in the cylinder, leads to piston rod bottom striking increase, avoids hydro-cylinder structure to damage.

Drawings

Fig. 1 is a first perspective three-dimensional cross-sectional view of a novel hydraulic cylinder sealing structure provided by the present invention;

fig. 2 is a second perspective three-dimensional cross-sectional view of the novel hydraulic cylinder sealing structure provided by the present invention;

fig. 3 is a perspective external view of the novel hydraulic oil cylinder sealing structure provided by the utility model.

In the figure: 1. a cylinder barrel; 2. a piston rod; 3. a seal ring; 4. a fixing plate; 5. sealing the rubber gasket; 6. a limiting plate; 7. a limiting ring; 8. a fixing member; 9. a cushion pad; 10. a dust-proof pad; 11. an oil inlet pipe; 12. an electromagnetic valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Example 1:

referring to fig. 1-3, a novel hydraulic oil cylinder sealing structure comprises a cylinder barrel 1, a piston rod 2 is arranged in the cylinder barrel 1, the piston rod 2 can drive a sealing rubber gasket 5 to move together when moving, when the piston rod 2 reaches the farthest point of the stroke, a limiting ring 7 can be pressed on the sealing rubber gasket 5 to extrude the sealing rubber gasket 5, and the extruded sealing rubber gasket 5 can fill the gap between a fixing plate 4 and the inner wall of the cylinder barrel 1, so that the outward leakage of hydraulic oil is avoided, and the sealing effect is effectively improved;

and two sealing rings 3 are installed to 2 one ends of piston rod, and fixed plate 4 is installed to 2 outer walls of piston rod, and fixed plate 4 one side outer wall is fixed with sealed

cushion

5, and 1 inner wall of cylinder is fixed with spacing board 6, and the welding of 6 bottom outer walls of spacing board has spacing ring 7.

Example 2:

referring to fig. 1-3, a novel hydraulic oil cylinder sealing structure comprises a cylinder barrel 1, a piston rod 2 is arranged in the cylinder barrel 1, two sealing rings 3 are arranged at one end of the piston rod 2, and the sealing effect of the oil cylinder is further enhanced by the two sealing rings 3;

a buffer pad 9 is fixed on the outer wall of one side, close to the cylinder barrel 1, of the piston rod 2, a dustproof pad 10 is installed on the inner wall of one side of the cylinder barrel 1, dust outside the cylinder can be effectively prevented from entering the cylinder through the arranged dustproof pad 10 to pollute hydraulic oil, and when the cylinder is decompressed through the arranged buffer pad 9, the bottom end of the piston rod 2 impacts the cylinder barrel 1 to play a buffer role;

the welding of 1 one side inner wall of cylinder has into oil pipe 11, and advances to install solenoid valve 12 on the oil pipe 11, through the steerable flow that advances in oil pipe 11 of solenoid valve 12 that sets up, avoid 1 interior hydraulic oil pressure release of cylinder at the excessive speed, lead to the increase of 2 bottom strikeings of piston rod, avoid hydro-cylinder structural damage, fixed plate 4 is installed to 2 outer walls of piston rod, and fixed plate 4 one side outer wall is fixed with sealed

cushion

5, 1 inner wall of cylinder is fixed with

spacing plate

6, and 6 bottom outer wall welding of spacing plate has spacing ring 7.

The working principle is as follows: the piston rod 2 can bring the sealing rubber gasket 5 to move together when moving, when the furthest point of the stroke of the piston rod 2 is reached, the limiting ring 7 can press on the sealing rubber gasket 5, the sealing rubber pad 5 is extruded, the gap between the fixed plate 4 and the inner wall of the cylinder barrel 1 is filled with the extruded sealing rubber pad 5, the outward leakage of hydraulic oil is avoided, the sealing effect is effectively improved, the sealing effect of the oil cylinder is further enhanced by the two sealing rings 3, the dust-proof pad 10 can effectively prevent the dust outside the oil cylinder from entering the oil cylinder to pollute the hydraulic oil, the cushion pad 9 can play a role of buffering when the oil cylinder releases pressure, the bottom end of the piston rod 2 impacts the cylinder barrel 1, the flow in the oil inlet pipe 11 can be controlled through the arranged electromagnetic valve 12, the phenomenon that the pressure of hydraulic oil in the cylinder barrel 1 is too fast is avoided, the bottom end of the piston rod 2 is impacted and increased, and the damage to the oil cylinder structure is avoided.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a novel hydraulic cylinder seal structure, includes cylinder (1), its characterized in that, be equipped with piston rod (2) in cylinder (1), and piston rod (2) one end installs two sealing washer (3), fixed plate (4) are installed to piston rod (2) outer wall, and fixed plate (4) one side outer wall is fixed with sealed cushion (5), cylinder (1) inner wall is fixed with limiting plate (6), and the outer wall welding of limiting plate (6) bottom has spacing ring (7).

2. A novel hydraulic oil cylinder sealing structure according to claim 1, characterized in that two fixing pieces (8) are installed at one end of the piston rod (2), and the sealing ring (3) is installed on the inner wall of each of the two fixing pieces (8).

3. A novel hydraulic oil cylinder sealing structure according to claim 2, characterized in that the cross section of the fixing piece (8) is of a concave structure.

4. A novel hydraulic oil cylinder sealing structure according to claim 1, characterized in that a buffer pad (9) is fixed on the outer wall of the piston rod (2) near one side of the cylinder barrel (1), and a dustproof pad (10) is installed on the inner wall of one side of the cylinder barrel (1).

5. A novel hydraulic oil cylinder sealing structure according to claim 1, characterized in that an oil inlet pipe (11) is welded on the inner wall of one side of the cylinder barrel (1), and an electromagnetic valve (12) is installed on the oil inlet pipe (11).