CN216198810U - Automatic centering structure for piston of reciprocating compressor - Google Patents
Automatic centering structure for piston of reciprocating compressor Download PDFInfo
- Publication number
- CN216198810U CN216198810U CN202122689046.7U CN202122689046U CN216198810U CN 216198810 U CN216198810 U CN 216198810U CN 202122689046 U CN202122689046 U CN 202122689046U CN 216198810 U CN216198810 U CN 216198810U
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- crosshead
- piston rod
- crosshead body
- shaped groove
- piston
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Abstract
The utility model discloses an automatic centering structure of a reciprocating compressor piston, which comprises a piston rod and a crosshead body and is characterized in that: the crosshead body can be axially movably arranged in the crosshead slide way, is in transmission connection with one end of the connecting rod, the piston rod can be axially movably arranged in the guide sleeve, and the guide sleeve and the crosshead slide way are arranged close to the same axis; a T-shaped groove is formed in one end face, close to the piston rod, of the crosshead body, a T-shaped head is arranged at one end, close to the crosshead body, of the piston rod, the T-shaped head is installed in the T-shaped groove, and a small axial gap and a large radial gap are reserved between the T-shaped head and the T-shaped groove. The utility model has simple assembly and stable operation, and can realize the purpose of automatic centering in the operation process.
Description
Technical Field
The utility model relates to an improvement in the field of compressors, in particular to an improvement in an automatic centering structure of a piston of a reciprocating compressor.
Background
The main connection mode of the crosshead body and the piston rod of the existing reciprocating compressor is as follows: the cross head body and the piston rod are connected into a whole without relative movement no matter which connection mode is adopted, such as threaded connection, hydraulic connection, half cutting sleeve connection and the like. In order to ensure the coaxiality of the crosshead body and the piston rod in the working process of the compressor, strict coaxiality requirements are imposed on a crosshead slide way for the crosshead body to slide and a guide sleeve for the piston rod to slide in the machining process and the installation process.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an automatic centering structure for a piston of a reciprocating compressor.
In order to solve the technical problems, the utility model is realized by adopting the following technical scheme: the automatic centering structure of the reciprocating compressor piston comprises a piston rod and a crosshead body, and is characterized in that: the crosshead body can be axially movably arranged in the crosshead slide way, is in transmission connection with one end of the connecting rod, the piston rod can be axially movably arranged in the guide sleeve, and the guide sleeve and the crosshead slide way are arranged close to the same axis; a T-shaped groove is formed in one end face, close to the piston rod, of the crosshead body, a T-shaped head is arranged at one end, close to the crosshead body, of the piston rod, the T-shaped head is installed in the T-shaped groove, and a small axial gap and a large radial gap are reserved between the T-shaped head and the T-shaped groove.
The T-shaped groove is formed by a groove arranged on the end face of the crosshead body and an annular end cover fixedly connected to the end face of the crosshead body.
The automatic centering structure has the advantages of simple processing technology, low production cost, simple assembly process, low assembly cost, more stable unit operation, smaller vibration value, good automatic centering and centering degree, and long service life of friction parts such as the piston rod, the guide sleeve, the crosshead body and the like.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The drawings show the structure of the utility model, and the details thereof are further described below with reference to the drawings. In the embodiment, the automatic piston centering structure of the reciprocating compressor comprises a piston rod 4 and a crosshead body 3, wherein the crosshead body 3 can be axially movably arranged in a crosshead slide way 2, the crosshead body 3 is in transmission connection with one end of a connecting rod 1, the piston rod 4 can be axially movably arranged in a guide sleeve 5, the guide sleeve 5 and the crosshead slide way 2 are arranged close to a coaxial line, and the coaxial line has great difficulty due to machining precision and assembly precision; the end face, close to the piston rod 4, of the crosshead body 3 is provided with a T-shaped groove 31, one end, close to the crosshead body 3, of the piston rod 4 is provided with a T-shaped head 41, the T-shaped head 41 is installed in the T-shaped groove 31, a small axial gap and a large radial gap are reserved between the T-shaped head 41 and the T-shaped groove 31, and the T-shaped head 41 is limited in the T-shaped groove 31 and can move in a small axial direction and a large radial direction.
According to the working principle of the utility model, the connecting rod 1 drives the crosshead body 3 to move in the crosshead slide way 2, the crosshead body 3 drives the piston rod 4 to move in the guide sleeve 5, when the guide sleeve 5 and the crosshead slide way 2 are not coaxial, the piston rod 4 is shifted through the axial gap and the radial gap reserved in the T-shaped head 41 and the T-shaped groove 31 in the moving process, so that automatic centering is realized, namely the problem that the guide sleeve 5 and the crosshead slide way 2 are not coaxial is overcome through the position shift of the piston rod 4, and the requirement of coaxiality of the guide sleeve 5 and the crosshead slide way 2 is reduced.
As a specific embodiment of further improvement, the T-shaped groove 31 is formed by a groove disposed on the end surface of the crosshead body 3 and an annular end cap 32 fixedly connected to the end surface of the crosshead body 3, and the inner diameter of the central hole of the annular end cap 32 is smaller than the inner diameter of the groove.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. Reciprocating compressor piston is automatic looks for heart structure, including piston rod and crosshead body, its characterized in that: the crosshead body can be axially movably arranged in the crosshead slide way, is in transmission connection with one end of the connecting rod, the piston rod can be axially movably arranged in the guide sleeve, and the guide sleeve and the crosshead slide way are arranged close to the same axis; a T-shaped groove is formed in one end face, close to the piston rod, of the crosshead body, a T-shaped head is arranged at one end, close to the crosshead body, of the piston rod, the T-shaped head is installed in the T-shaped groove, and a small axial gap and a large radial gap are reserved between the T-shaped head and the T-shaped groove.
2. The reciprocating compressor piston automatic centering structure of claim 1, wherein: the T-shaped groove is formed by a groove arranged on the end face of the crosshead body and an annular end cover fixedly connected to the end face of the crosshead body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689046.7U CN216198810U (en) | 2021-11-05 | 2021-11-05 | Automatic centering structure for piston of reciprocating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689046.7U CN216198810U (en) | 2021-11-05 | 2021-11-05 | Automatic centering structure for piston of reciprocating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198810U true CN216198810U (en) | 2022-04-05 |
Family
ID=80902449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122689046.7U Active CN216198810U (en) | 2021-11-05 | 2021-11-05 | Automatic centering structure for piston of reciprocating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216198810U (en) |
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2021
- 2021-11-05 CN CN202122689046.7U patent/CN216198810U/en active Active
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