CN219861441U - Cross pin oil hole shielding cover - Google Patents
Cross pin oil hole shielding cover Download PDFInfo
- Publication number
- CN219861441U CN219861441U CN202321124973.7U CN202321124973U CN219861441U CN 219861441 U CN219861441 U CN 219861441U CN 202321124973 U CN202321124973 U CN 202321124973U CN 219861441 U CN219861441 U CN 219861441U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil hole
- oil port
- cross pin
- cover
- 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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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 abstract description 23
- 238000010791 quenching Methods 0.000 abstract description 13
- 230000000171 quenching effect Effects 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- Heat Treatment Of Articles (AREA)
Abstract
The utility model provides a cross pin oil hole shielding cover, which aims to solve the problems that: the cross pin still has sharp angle effect when doing induction hardening treatment, leads to sharp angle high temperature, and then produces overheated, burning loss. The key points of the utility model are as follows: the oil hole stopper comprises a cylindrical oil hole stopper, wherein a circular oil port copper cover is arranged at the outer end of the oil hole stopper cylinder, the center of the oil port copper cover is arranged on the axis of the oil hole stopper cylinder, the oil hole stopper is in transition fit with an oil hole, and the oil port copper cover is limited by being capable of covering the oil port; the exhaust hole is arranged at the center of the axial lead of the oil hole plug cylinder and the center of the oil port cover. In the induction quenching process of the surface of the cross pin, because copper is non-magnetic metal, after the oil port is covered by the oil port copper cover, magnetic induction lines are shielded, thereby reducing the induction current of the oil port, controlling the temperature rise caused by the induction current, and obviously improving the qualification rate of the induction quenching treatment of the cross pin.
Description
Technical Field
The utility model relates to a cross pin of a reciprocating piston compressor, in particular to a cross pin oil hole shielding cover for protecting oil holes of the cross pin when the cross pin is subjected to induction quenching treatment.
Background
The cross pin of the reciprocating compressor is a key component for connecting the cross head and the connecting rod, the cross pin is provided with a cross oil hole, and four oil ports are formed on the surface of the cross pin. In order to improve the wear resistance of the cross pin, induction hardening treatment is required to be performed on the surface of the cross pin. Even if chamfering (filleting) is carried out on the edge of each oil port, the phenomenon of sharp angle effect still exists when induction quenching is carried out, so that the sharp angle temperature is too high, overheat and burning loss are further generated, cracking is caused when severe, scrapping is caused, and the qualification rate of the induction quenching of the cross pin is low.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a cross pin oil hole shielding cover.
The purpose of the utility model is realized in the following way: the oil hole stopper comprises a cylindrical oil hole stopper, wherein a circular oil port copper cover is arranged at the outer end of the oil hole stopper cylinder, the center of the oil port copper cover is arranged on the axis of the oil hole stopper cylinder, the oil hole stopper is in transition fit with an oil hole, and the oil port copper cover is limited by being capable of covering the oil port; the exhaust hole is arranged on the axial lead of the oil hole plug cylinder and the center of the oil port cover so as to prevent the shielding cover from being ejected out due to gas expansion in the oil hole after heating.
Before induction quenching of the surface of the cross pin, each oil port is plugged into the utility model until the copper cover of the oil port covers the oil port of the cross pin oil hole. And secondly, carrying out induction quenching treatment on the surface of the cross pin. Finally, the utility model is removed from each oil port.
In the process of induction quenching of the surface of the cross pin, because copper is non-magnetic metal, after the oil port is covered by the oil port copper cover, magnetic induction lines (of the oil port) are shielded, thereby reducing induction current of the oil port and controlling temperature rise caused by the induction current. And secondly, the quenching agent is prevented from being directly sprayed at the oil port, and cracks caused by too fast cooling of the oil port are avoided.
Compared with the prior art, the utility model has the following positive effects: the qualification rate of the induction quenching treatment of the cross pin is obviously improved.
Drawings
The utility model is further described below with reference to the drawings.
Fig. 1 is a schematic view of the present utility model mounted on a cross pin.
Detailed Description
The cross pin oil hole shielding cover 2 comprises a cylindrical oil hole copper plug 23, a round oil port copper cover 21 is arranged at the outer end of the oil hole plug cylinder, the center of the oil port copper cover is arranged on the axis of the oil hole plug cylinder, the oil hole plug is in transition fit with the oil hole 24, and the oil port copper cover is limited by being capable of covering an oil port; the exhaust hole 22 is arranged on the axial lead of the oil hole plug cylinder and the center of the oil port cover so as to prevent the shield cover from being ejected out due to expansion of gas in the oil hole after heating.
Before induction hardening of the surface of the cross pin 1, each oil port is plugged into the cross pin oil hole shielding cover 2 until the copper cover of the oil port covers the oil port of the cross pin oil hole. Secondly, induction quenching treatment is carried out on the surface of the cross pin. Finally, the utility model is removed from each oil port.
In the process of induction quenching of the surface of the cross pin, because copper is non-magnetic metal, after the oil port is covered by the oil port copper cover, magnetic induction lines (of the oil port) are shielded, thereby reducing induction current of the oil port and controlling temperature rise caused by the induction current. And secondly, the quenching agent is prevented from being directly sprayed at the oil port, and further cracks caused by too fast cooling of the oil port are avoided.
Claims (1)
1. A cross pin oil hole shielding cover is characterized in that: the oil hole stopper comprises a cylindrical oil hole stopper, wherein a circular oil port copper cover is arranged at the outer end of the oil hole stopper cylinder, the center of the oil port copper cover is arranged on the axis of the oil hole stopper cylinder, the oil hole stopper is in transition fit with an oil hole, and the oil port copper cover is limited by being capable of covering the oil port; the exhaust hole is arranged on the axial lead of the oil hole plug cylinder and the center of the oil port cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124973.7U CN219861441U (en) | 2023-05-11 | 2023-05-11 | Cross pin oil hole shielding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124973.7U CN219861441U (en) | 2023-05-11 | 2023-05-11 | Cross pin oil hole shielding cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219861441U true CN219861441U (en) | 2023-10-20 |
Family
ID=88317961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321124973.7U Active CN219861441U (en) | 2023-05-11 | 2023-05-11 | Cross pin oil hole shielding cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219861441U (en) |
-
2023
- 2023-05-11 CN CN202321124973.7U patent/CN219861441U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |