CN201843888U - Locking washer for preventing looseness of thermal-insulation screws connecting booster turbine box with bearing body - Google Patents
Locking washer for preventing looseness of thermal-insulation screws connecting booster turbine box with bearing body Download PDFInfo
- Publication number
- CN201843888U CN201843888U CN2010205627079U CN201020562707U CN201843888U CN 201843888 U CN201843888 U CN 201843888U CN 2010205627079 U CN2010205627079 U CN 2010205627079U CN 201020562707 U CN201020562707 U CN 201020562707U CN 201843888 U CN201843888 U CN 201843888U
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- locking washer
- thermal
- booster turbine
- screw
- degrees
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Abstract
The utility model provides a locking washer for preventing looseness of thermal-insulation screws connecting a booster turbine box with a bearing body. A locking washer body is a strip-shaped arc plate, and two ends of the body are respectively provided with a screw hole and two raised folding edges. The distance L between the two screw holes is equal to the distance on the booster turbine box, connecting the two adjacent thread holes of the bearing body. An angle alpha between the two folding edges is 60 degrees, or 120 degrees or 180 degrees. The locking washer utilizes the rigid deformation generated by turning back the upper folding edge of the locking washer by 90 degrees to limit the rotation of the thermal-insulation screws, so that the thermal-insulation screws are more firmly installed and can not loosen to influence the performance of an engine. In addition, one locking washer corresponds to two thermal-insulation screws, and as the two screws are limited with each other, the locking washer can not be rotated by screwing up any one screw, and the assembling efficiency is improved.
Description
Technical field
The utility model relates to a kind of pad that is used to be threaded, particularly a kind of lock washer that prevents to connect booster turbine case and the heat-resisting screw loosening of bearing support.
Background technique
Turbosupercharger is that the high temperature, the high pressure exhaust gas that utilize motor to discharge drive turbine work, and for guaranteeing reliability, being connected of turbine box and bearing support all is to adopt heat-resisting screw and hot junction pressing plate fastening means.Because row's temperature of petrol engine machine and natural gas engine height, under the long-term impact of this high-temp waste gas, depend merely on the heat-resisting screw that certain pretightening force tightens and can occur becoming flexible, influence engine performance.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of lock washer that prevents to connect booster turbine case and the heat-resisting screw loosening of bearing support is provided.
The technical solution of the utility model is: a kind of lock washer that prevents to connect booster turbine case and the heat-resisting screw loosening of bearing support, the body of lock washer is the arc plate of bar shaped, is respectively equipped with the flanging of a screw hole and two protrusions at the two ends of body.Being used for two of connection bearing bodies on distance L between two screw holes and the booster turbine case leads the distance between the tapped hole the same mutually.
Of the present utility modelly advance a technological scheme and be: the angle a between two flangings is 60 ° or 120 ° or 180 °.
The utility model compared with prior art has following characteristics:
1, utilize the lock washer upper hem to turn back 90 ° and produce the rotation that rigid deformation limits heat-resisting screw, thereby it is more firm that heat-resisting screw is installed, the loosening engine performance that influences can not occur.
2, adopt corresponding two the heat-resisting screws of lock washer in addition, because spacing mutually between two screws tightened the rotation that any one screw can not cause lock washer, improved efficiency of assembling, effect is remarkable.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is a scheme of installation.
Embodiment
A kind of lock washer that prevents to connect booster turbine case and the heat-resisting screw loosening of bearing support, the body 3-1 of lock washer 3 is the arc plate of bar shaped, is respectively equipped with flanging 3-1-2, the 3-1-3 of a screw hole 3-1-1 and two protrusions at the two ends of body 3-1.The distance that is used between 5 two adjacent screw holes of connection bearing body on distance L between two screw hole 3-1-1 and the booster turbine case 1 is the same, and the angle a between two flanging 3-1-2 and the 3-1-3 is 60 ° or 120 ° or 180 °.
During use, elder generation packs bearing support 5 in the turbine box 1, by heat-resisting screw 4, lock washer 3, hot junction pressing plate 2 bearing support 5 and turbine box 1 are linked together, lock washer 3 is installed between heat-resisting screw 4 and the hot junction pressing plate 2, tighten heat-resisting screw 4, make lock washer 3 stretch out heat-resisting screw 4 outer flanging 3-1-2,3-1-3 by external force and turn back 90 °, be close on two faces of heat-resisting screw 4 six aspects, utilize the rigidity of flanging 3-1-2, the 3-1-3 of bending to reach the purpose that the heat-resisting screw 4 of restriction rotates.
Claims (2)
1. lock washer that prevents to connect booster turbine case and the heat-resisting screw loosening of bearing support, it is characterized in that: the body of lock washer is the arc plate of bar shaped, be respectively equipped with the flanging of a screw hole and two protrusions at the two ends of body, the distance that is used between two adjacent screw holes of connection bearing body on the distance L between two screw holes and the booster turbine case is the same.
2. a kind of lock washer that prevents to connect booster turbine case and the heat-resisting screw loosening of bearing support according to claim 1 is characterized in that: the angle a between two flangings on the lock washer is 60 ° or 120 ° or 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205627079U CN201843888U (en) | 2010-10-12 | 2010-10-12 | Locking washer for preventing looseness of thermal-insulation screws connecting booster turbine box with bearing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205627079U CN201843888U (en) | 2010-10-12 | 2010-10-12 | Locking washer for preventing looseness of thermal-insulation screws connecting booster turbine box with bearing body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843888U true CN201843888U (en) | 2011-05-25 |
Family
ID=44038780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205627079U Expired - Fee Related CN201843888U (en) | 2010-10-12 | 2010-10-12 | Locking washer for preventing looseness of thermal-insulation screws connecting booster turbine box with bearing body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843888U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3290661A1 (en) * | 2016-08-29 | 2018-03-07 | United Technologies Corporation | Thermal barrier seal for a composite boss |
| EP3290660A1 (en) * | 2016-08-29 | 2018-03-07 | United Technologies Corporation | Thermal barrier washer for a composite boss |
| WO2021148756A1 (en) * | 2020-01-23 | 2021-07-29 | Safran Aircraft Engines | Fluid recovery assembly |
-
2010
- 2010-10-12 CN CN2010205627079U patent/CN201843888U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3290661A1 (en) * | 2016-08-29 | 2018-03-07 | United Technologies Corporation | Thermal barrier seal for a composite boss |
| EP3290660A1 (en) * | 2016-08-29 | 2018-03-07 | United Technologies Corporation | Thermal barrier washer for a composite boss |
| US10697325B2 (en) | 2016-08-29 | 2020-06-30 | Raytheon Technologies Corporation | Thermal barrier seal |
| US10883385B2 (en) | 2016-08-29 | 2021-01-05 | Raytheon Technologies Corporation | Thermal barrier washer |
| WO2021148756A1 (en) * | 2020-01-23 | 2021-07-29 | Safran Aircraft Engines | Fluid recovery assembly |
| FR3106613A1 (en) * | 2020-01-23 | 2021-07-30 | Safran Aircraft Engines | Fluid recuperator assembly. |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20161012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |