CN220337453U - Split type piston rod and protective sleeve thereof - Google Patents
Split type piston rod and protective sleeve thereof Download PDFInfo
- Publication number
- CN220337453U CN220337453U CN202322025571.8U CN202322025571U CN220337453U CN 220337453 U CN220337453 U CN 220337453U CN 202322025571 U CN202322025571 U CN 202322025571U CN 220337453 U CN220337453 U CN 220337453U
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- CN
- China
- Prior art keywords
- protective sleeve
- piston rod
- cavity
- bolt
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 abstract description 6
- 238000012856 packing Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a split type piston rod and a protective sleeve thereof, which aims to solve the technical problems that: processing the internal thread of the piston rod protective sleeve is not easy. The key points of the utility model are as follows: the piston rod comprises a screw rod and an end face thereof, the piston rod protective sleeve comprises a protective sleeve cavity, a cavity wall and a cavity end cover, and a threaded blind hole is formed in the center of the end face of the screw rod; the cavity wall of the protective sleeve cavity is a light wall, the light wall means that the cavity wall is unthreaded, a bolt and a light hole thereof are arranged at the center of the cavity end cover, and the bolt is matched with the threaded blind hole. Compared with the integrated piston rod and the protective sleeve thereof, the utility model does not need to process the internal thread of the protective sleeve, only processes the bolt unthreaded hole at the center of the end cover of the protective sleeve cavity, greatly reduces the difficulty, further obviously improves the processing efficiency and reduces the processing cost of the push protective sleeve.
Description
Technical Field
The utility model relates to a piston rod of a reciprocating piston compressor and a protective sleeve thereof.
Background
The tail section of the piston rod of the reciprocating compressor is a screw rod (hereinafter referred to as a piston rod screw rod) for installing (connecting) the cross head. Before the cross head is installed, the packing is required to be installed on the piston rod, and the packing collides with threads on the screw rod when passing through the screw rod of the piston rod, so that the packing ring and the screw rod (the threads) of the piston rod are damaged. To avoid this damage, the piston rod boot is first mounted to the piston rod screw prior to the mounting of the packing. The piston rod protecting sleeve is in a pen cap shape with internal threads and comprises a protecting sleeve cavity, a cavity wall and a cavity opening, wherein the cavity wall is provided with threads (the protecting sleeve is provided with internal threads), the cavity end cover is arranged opposite to the cavity opening, the internal threads are matched with a piston rod screw rod, and particularly, like a pen point is arranged in the pen cap, the end face of the screw rod is arranged in the protecting sleeve cavity opposite to the cavity opening and screwed in, so that the end face of the screw rod is abutted to the cavity end cover, the protecting sleeve wraps the screw rod, and at the moment, the screw rod is completely matched with the internal threads, so that the piston rod and the protecting sleeve are integrated, and the piston rod is also called an integrated piston rod and the protecting sleeve thereof. And installing the filler after the protective sleeve is installed. And after the filling is installed, the protective sleeve is unscrewed to detach the piston rod screw rod, and a cross head and the like are installed on the screw rod. The process of machining the integral piston rod protective sleeve comprises machining an internal thread. The internal thread is not easy to process originally, and the diameter of the integrated piston rod protecting sleeve is small, the length is large, the difficulty in processing the internal thread of the protecting sleeve is increased, and the cost of the piston rod protecting sleeve is increased.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a split type piston rod without internal threads and a protective sleeve thereof.
The purpose of the utility model is realized in the following way: the piston rod includes screw rod and terminal surface, and the piston rod protective sheath includes protective sheath chamber and chamber wall, chamber end cover, characterized by: a threaded blind hole is formed in the center of the end face of the screw; the cavity wall of the protective sleeve cavity is a light wall, the light wall refers to the fact that the cavity wall is not threaded (namely, the protective sleeve is not internally threaded), a bolt and a light hole thereof are arranged at the center of the cavity end cover, and the bolt is matched with the threaded blind hole. The bolt and the unthreaded hole thereof refer to the bolt and the unthreaded hole which are matched with each other.
The screw rod of the piston rod is arranged in the protective sleeve like the pen point is arranged in the pen cap, the end face of the screw rod faces the cavity opening, the screw rod is inserted into the cavity of the protective sleeve until the end face of the screw rod abuts against the cavity end cover, at the moment, the screw bolt on the unthreaded hole of the cavity end cover faces the threaded blind hole of the screw rod, the screw bolt is screwed on the outer side of the cavity end cover, and the protective sleeve wraps the screw rod. The screw rod and the protective sleeve are connected only by one point of the bolt, and the split type piston rod and the protective sleeve thereof can be called as split type piston rod and the protective sleeve thereof. When the protective sleeve is required to be disassembled, the bolt is reversely screwed.
Compared with the integrated piston rod and the protective sleeve thereof, the utility model does not need to process the internal thread of the protective sleeve, only processes the bolt unthreaded hole at the center of the end cover of the protective sleeve cavity, greatly reduces the difficulty, further obviously improves the processing efficiency and reduces the processing cost of the push protective sleeve.
Drawings
The utility model is further described below with reference to the drawings.
Fig. 1 is a schematic view of the structure of the piston rod protecting sleeve, in which the piston rod screw is not yet installed in the protecting sleeve.
Figure 2 is a schematic view of the rod screw being encased in a protective sleeve.
Detailed Description
The piston rod 1 comprises a screw rod 2 and an end face 5 thereof, the piston rod protective sleeve 3 comprises a protective sleeve cavity 9, a cavity wall 10 and a cavity end cover 6, and a threaded blind hole 4 is formed in the center of the end face of the screw rod; the cavity wall 10 of the protective sleeve cavity is a light wall, the light wall means that the cavity wall is not threaded (namely, the protective sleeve is not internally threaded), a bolt 7 and a light hole 8 thereof are arranged at the center of the cavity end cover, and the bolt is matched with the threaded blind hole. The bolt and the unthreaded hole thereof are matched with each other, and the bolt and the unthreaded hole thereof are in a spigot structure and are used for positioning the bolt.
The screw rod of the piston rod is arranged in the protective sleeve like the pen point is arranged in the pen cap, the end face of the screw rod faces the cavity opening 11, the screw rod is inserted into the cavity 9 of the protective sleeve until the end face of the screw rod abuts against the cavity end cover, at the moment, the screw bolt on the unthreaded hole of the cavity end cover faces the threaded blind hole of the screw rod, the screw bolt is screwed on the outer side of the cavity end cover, and the protective sleeve wraps the screw rod. The screw rod and the protective sleeve are connected only by one point of the bolt, and the split type piston rod and the protective sleeve thereof can be called as split type piston rod and the protective sleeve thereof. When the protective sleeve is required to be disassembled, the bolt is reversely screwed.
Claims (2)
1. The utility model provides a split type piston rod and protective sheath thereof, the piston rod includes screw rod and terminal surface, and the piston rod protective sheath includes protective sheath chamber and chamber wall, chamber end cover, characterized by: a threaded blind hole is formed in the center of the end face of the screw; the cavity wall of the protective sleeve cavity is a light wall, the light wall means that the cavity wall is unthreaded, a bolt and a light hole thereof are arranged at the center of the cavity end cover, and the bolt is matched with the threaded blind hole.
2. A split piston rod and its protective sleeve as defined in claim 1, wherein: the bolt and the unthreaded hole thereof are of a spigot structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322025571.8U CN220337453U (en) | 2023-07-31 | 2023-07-31 | Split type piston rod and protective sleeve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322025571.8U CN220337453U (en) | 2023-07-31 | 2023-07-31 | Split type piston rod and protective sleeve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220337453U true CN220337453U (en) | 2024-01-12 |
Family
ID=89449360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322025571.8U Active CN220337453U (en) | 2023-07-31 | 2023-07-31 | Split type piston rod and protective sleeve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220337453U (en) |
-
2023
- 2023-07-31 CN CN202322025571.8U patent/CN220337453U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |