CN212803835U

CN212803835U - Internal pressure lubricating full-sealed piston

Info

Publication number: CN212803835U
Application number: CN202021804755.4U
Authority: CN
Inventors: 柳成吉
Original assignee: Changzhou Wenxu Machinery Co ltd
Current assignee: Changzhou Wenxu Machinery Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-26
Anticipated expiration: 2030-08-25

Abstract

The utility model relates to the technical field of hydraulic oil cylinder heat dissipation, in particular to an internal pressure lubrication fully-sealed piston; the oil cylinder main body is internally provided with a cavity structure; a piston head connected to a piston rod, both moving within the cavity structure; the sealing cylinder cover is covered on the oil cylinder main body and is provided with a through hole through which the piston rod penetrates out, and the piston head and a part of the piston rod are sealed in the cavity structure; the cooling pipeline is arranged in the side wall of the oil cylinder main body and used for carrying cooling liquid to cool the oil cylinder main body, the piston head and the piston rod; the sealing cylinder cover is provided with a buckle; the buckle is matched with a groove arranged on the oil cylinder main body. The utility model aims at providing an interior pressure lubrication totally enclosed formula piston to the defect that exists among the prior art, set up the coolant liquid pipeline in the hydro-cylinder, come for hydro-cylinder and piston through the coolant liquid and cool down, prevent that the machine from damaging, improve the operational safety nature.

Description

Internal pressure lubricating full-sealed piston

Technical Field

The utility model relates to a radiating technical field of hydraulic cylinder especially relates to an interior pressure lubrication totally enclosed piston.

Background

The hydraulic oil cylinder is an industrial automation device with wide application, and most of common hydraulic oil cylinders are embedded into a cylinder body through a guide sleeve, and then a piston rod is arranged in the guide sleeve. The sealing between the piston and the cylinder barrel of traditional pneumatic cylinder adopts the sealing washer mounting groove that sets up on piston circumferential direction usually and the rubber material sealing washer of cooperation installation in the sealing washer mounting groove to realize, but the seal structure of this kind of traditional form can make the machine collapse when serious in can leading to the temperature rise in the hydro-cylinder, causes economic property's loss.

In view of the above problems, the present designer is based on practical experience and professional knowledge that is abundant years after engineering application of such products, and is engaged with the application of theory, and actively makes research and innovation to design the fully-sealed piston with internal pressure lubrication, and sets a cooling fluid pipeline in the oil cylinder to cool the oil cylinder and the piston by the cooling fluid, thereby preventing the machine from being damaged and improving the operation safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an interior pressure lubrication totally enclosed formula piston to the defect that exists among the prior art, set up the coolant liquid pipeline in the hydro-cylinder, come for hydro-cylinder and piston through the coolant liquid and cool down, prevent that the machine from damaging, improve the operational safety nature.

In order to achieve the above purpose, the utility model adopts the technical scheme that: internal pressure lubricating full-sealed piston

The method comprises the following steps:

the oil cylinder main body is internally provided with a cavity structure;

a piston head connected to a piston rod, both moving within the cavity structure;

the sealing cylinder cover is covered on the oil cylinder main body and is provided with a through hole through which the piston rod penetrates out, and the piston head and a part of the piston rod are sealed in the cavity structure;

and the cooling pipeline is arranged in the side wall of the oil cylinder main body and bears cooling liquid to cool the oil cylinder main body, the piston head and the piston rod.

Furthermore, a buckle is arranged on the sealing cylinder cover; the buckle with the recess cooperation that sets up on the hydro-cylinder main part realizes the sealed cylinder cap with the fixed connection of hydro-cylinder main part.

Further, a sealing ring is arranged on the cylinder cover; the sealing ring is matched with the through hole to seal a gap between the piston rod and the sealing cylinder cover.

Further, the cooling device also comprises a cooling liquid inlet which is communicated with the cooling pipeline to input cooling liquid into the cooling pipeline 8; and the end part of the cooling liquid inlet is provided with an inlet cover.

Further, the cooling device also comprises a cooling liquid outlet which is communicated with the cooling pipeline and used for discharging the cooling liquid in the cooling pipeline; and an outlet cover is arranged at the end part of the cooling liquid outlet.

Further, the lubricating oil inlet is also included; the lubricating oil inlet is communicated with the cavity structure to input lubricating oil; and a top cover is arranged at the end part of the lubricating oil inlet.

Through the technical scheme of the utility model, can realize following technological effect:

through set up the coolant liquid pipeline in the hydro-cylinder, cool down for hydro-cylinder and piston through the coolant liquid, prevent that the machine from damaging, improve the operation security.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of an internal pressure lubrication fully-sealed piston according to an embodiment of the present invention;

reference numerals: the cylinder comprises a cylinder body 1, a piston head 2, a piston rod 3, a sealing cylinder cover 4, a lubricating oil inlet 5, a cooling liquid inlet 6, a cooling liquid outlet 7, a cooling pipeline 8, a cavity structure 11, a buckle 41, a sealing ring 42, a top cover 51, an inlet cover 61 and an outlet cover 71.

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.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

An internal pressure lubrication fully sealed piston, as shown in figure 1,

the method comprises the following steps:

the oil cylinder comprises an oil cylinder main body 1, wherein a cavity structure 11 is arranged in the oil cylinder main body;

a piston head 2 connected to the piston rod 3, both moving within the chamber structure 11;

the sealing cylinder cover 4 is covered on the oil cylinder main body 1 and is provided with a through hole through which the piston rod 3 penetrates, and the piston head 2 and a part of the piston rod 3 are sealed in the cavity structure 11;

and the cooling pipeline 8 is arranged in the side wall of the oil cylinder main body 1 and carries cooling liquid to cool the oil cylinder main body 1, the piston head 2 and the piston rod 3.

Specifically, on the lateral wall of the oil cylinder main body 1, a cooling pipeline 8 is arranged at a position close to the cavity structure 11, when the temperature of the oil cylinder main body 1, the piston head 2 and the piston rod 3 is too high, cooling liquid is input into the cooling pipeline 8 to cool the oil cylinder main body 1, the piston head 2 and the piston rod 3, overheating damage is effectively prevented, and safety is improved.

As a preferable example of the above embodiment, as shown in fig. 1, the sealing cylinder cover 4 is provided with a buckle 41; the buckle 41 is matched with a groove formed in the oil cylinder body 1, so that the sealing cylinder cover 4 is fixedly connected with the oil cylinder body 1.

Specifically, the buckle 41 arranged on the sealing cylinder cover 4 is matched with the groove arranged on the oil cylinder body 1, so that the connection tightness between the sealing cylinder cover 4 and the oil cylinder body 1 is improved.

As a preferable example of the above embodiment, as shown in fig. 1, the cylinder head 4 is provided with a seal ring 42; the sealing ring 42 is matched with the through hole to seal a gap between the piston rod 3 and the sealing cylinder cover 4.

Specifically, the sealing ring 42 is matched with a through hole provided in the sealing cylinder cover 4 for the piston rod 3 to penetrate through.

As shown in fig. 1, the cooling system of the present embodiment preferably further includes a cooling fluid inlet 6 which communicates with the cooling duct 8 and which inputs cooling fluid into the cooling duct 8; the end of the cooling liquid inlet 6 is provided with an inlet cover 61.

As shown in fig. 1, the cooling device of the present embodiment preferably further includes a cooling liquid outlet 7 which communicates with the cooling duct 8 to discharge the cooling liquid in the cooling duct 8; the end of the cooling liquid outlet 7 is provided with an outlet cover 71.

As a preference of the above embodiment, as shown in fig. 1, the lubricating oil supply device further includes a lubricating oil inlet 5; the lubricating oil inlet 5 is communicated with the cavity structure 11 to input lubricating oil; the lubricating oil inlet 5 is provided at its end with a top cover 51.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An internal pressure lubrication fully-sealed piston, comprising:

the oil cylinder comprises an oil cylinder main body (1) and a cavity structure (11) arranged in the oil cylinder main body;

the piston head (2) is connected with the piston rod (3), and both of the piston head and the piston rod move in the cavity structure (11);

the sealing cylinder cover (4) is covered on the oil cylinder main body (1) and is provided with a through hole through which the piston rod (3) penetrates, and the piston head (2) and one part of the piston rod (3) are sealed in the cavity structure (11);

and the cooling pipeline (8) is arranged in the side wall of the oil cylinder main body (1) and bears cooling liquid to cool the oil cylinder main body (1), the piston head (2) and the piston rod (3).

2. The internal pressure lubrication fully-sealed piston according to claim 1, wherein a snap (41) is provided on the sealing cylinder head (4); the buckle (41) is matched with a groove formed in the oil cylinder body (1) to realize the fixed connection between the sealing cylinder cover (4) and the oil cylinder body (1).

3. The internal pressure lubrication fully-sealed piston according to claim 1, wherein a seal ring (42) is provided on the cylinder head (4); and the sealing ring (42) is matched with the through hole to seal a gap between the piston rod (3) and the sealing cylinder cover (4).

4. The internal pressure lubrication fully-sealed piston according to claim 1, further comprising a coolant inlet (6) communicating with the cooling pipe (8) to input a coolant into the cooling pipe (8); and an inlet cover (61) is arranged at the end part of the cooling liquid inlet (6).

5. The internal pressure lubrication fully-sealed piston according to claim 1, further comprising a coolant outlet (7) communicating with the cooling pipe (8) to discharge the coolant in the cooling pipe (8); an outlet cover (71) is arranged at the end part of the cooling liquid outlet (7).

6. The internal pressure lubrication fully-sealed piston according to any one of claims 1 to 5, further comprising a lubricating oil inlet (5); the lubricating oil inlet (5) is communicated with the cavity structure (11) to input lubricating oil; and a top cover (51) is arranged at the end part of the lubricating oil inlet (5).