CN203682156U - Protective cover for internal thread petroleum machinery workpiece - Google Patents
Protective cover for internal thread petroleum machinery workpiece Download PDFInfo
- Publication number
- CN203682156U CN203682156U CN201320878038.XU CN201320878038U CN203682156U CN 203682156 U CN203682156 U CN 203682156U CN 201320878038 U CN201320878038 U CN 201320878038U CN 203682156 U CN203682156 U CN 203682156U
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- CN
- China
- Prior art keywords
- protective cover
- petroleum machinery
- cover body
- thread
- machinery workpiece
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- Expired - Fee Related
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Abstract
The utility model relates to a workpiece protective cover, in particular to a protective cover for an internal thread petroleum machinery workpiece. The protective cover comprises a rigid barrel and also comprises a clamping cap body and a cylindrical plastic cover body with a flange on one end; the inner wall of the plastic cover body is fitted with the outer wall of the barrel; the inner side of the flange is abutted against one end of the barrel; external threads are formed on the plastic cover body; the upper part of the clamping cap body is abutted against the outer side of the flange; the lower part of the clamping cap body is provided with compression threads and is connected with the inner wall of the barrel; the compression threads and the external threads are identical in rotation direction. When the protective cover for the internal thread petroleum machinery workpiece is used, even if the acting force between the petroleum machinery workpiece and the protective cover is larger, the external threads of the petroleum machinery workpiece can be still well protected by the protective cover.
Description
Technical field
The utility model relates to a kind of workpiece protective case, is specifically related to a kind of protective cover of internal-thread petroleum machinery workpiece.
Background technology
In petroleum machinery workpiece; workpiece has negative thread greatly; the intensity at screw thread place is poor; in transportation; easily because the situations such as collision, extruding and friction are by thread damage, once screw thread be damaged, will be influenced when workpiece uses; even workpiece is scrapped, so the protection of workpiece negative thread is just extremely important.
The negative thread of existing petroleum machinery workpiece generally by arrange one with the shield body of workpiece screw-internal thread fit, and what shield body adopted is rigid material, the outside thread interaction force of the negative thread of petroleum machinery workpiece and shield body is larger, easily make the outside thread distortion of petroleum machinery workpiece, still can affect the precision of petroleum machinery workpiece.
Utility model content
The defect existing for above-mentioned prior art; the purpose of this utility model is to provide a kind of protective cover of internal-thread petroleum machinery workpiece; when between petroleum machinery workpiece and protective cover, application force is larger, this protective cover still can be protected the negative thread of petroleum machinery workpiece well.
For achieving the above object, the technical solution of the utility model is: the protective cover of internal-thread petroleum machinery workpiece, comprise the cylindrical shell of rigidity, wherein, also be provided with and compress lid and the flanged plastics cover body of cylindrical shape and one end, the outer wall laminating of described plastics cover body inwall and cylindrical shell, and the inner side of described flange and one end of cylindrical shell offset, and plastics cover body is provided with outside thread; The outside of described compression lid top and flange offsets, and bottom is provided with collet threaded and is connected with the inwall of cylindrical shell, described collet threaded with external thread rotary to identical.
While adopting technique scheme, protective cover of the present utility model is provided with plastics cover body, after the outside thread of plastics cover body and the screw-internal thread fit of petroleum machinery workpiece, because the elasticity of plastics is better, colliding at petroleum machinery workpiece, push and rub in strong situation, application force between the outside thread of plastics cover body and petroleum machinery workpiece negative thread is larger, plastics cover body can not make the negative thread of petroleum machinery workpiece deform, in the process screwing at plastics cover body, due to the collet threaded of described compression lid bottom with external thread rotary to identical, so compressing lid compresses plastics cover body, so can prevent that the relative cylindrical shell of plastics cover body from rotating the utility model and can effectively protect the negative thread of petroleum machinery workpiece.
Further, along described compression lid and plastics cover body flanged pin one end be radially provided with rotation hole, can insert in rotation hole by special tool, by the process of the screw-internal thread fit of the utility model and petroleum machinery workpiece, can increase the arm of force rotating.
Further, on described plastics cover body and cylinder lateral wall, offer filler port, can inject machine oil to the negative thread of petroleum machinery workpiece by filler port and maintain.
Further, described compression lid is hexagonal bar iron, can be directly by conventional instrument as spanner, assemble, easy to assembly.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the protective cover embodiment of the utility model internal-thread petroleum machinery workpiece.
The specific embodiment
As shown in Figure 1, a kind of protective cover of internal-thread petroleum machinery workpiece, comprise the cylindrical shell 1 of rigidity, wherein, also be provided with the plastics cover body 3 that compresses lid 2 and cylindrical shape and one end flanged pin 31, the outer wall laminating of plastics cover body 3 inwalls and cylindrical shell 1, and one end of the inner side of flange 31 and cylindrical shell 1 offsets, and plastics cover body 3 is provided with outside thread 4; The outside that compresses lid 2 tops and flange 31 offsets, and bottom is provided with collet threaded and is connected with the inwall of cylindrical shell 1, and collet threaded is identical with outside thread 4 rotation directions.
In the present embodiment, on plastics cover body 3 and cylindrical shell 1 sidewall, offer filler port, can inject machine oil to the negative thread of petroleum machinery workpiece by filler port and maintain.Compressing lid 2 is hexagonal bar iron, can be directly by conventional instrument as spanner, assemble, easy to assembly.
Concrete installation method:
As shown in Figure 1; first will not insert in plastics cover body 3 flanged pin 31 one end from plastics cover body 3 from cylindrical shell 1; then will compress lid 2 coordinates with cylindrical shell 1; and use spanner that compression lid 2 is screwed; then the negative thread of overall and to be protected petroleum machinery workpiece is aimed at and screwed in, in the process screwing, because collet threaded is identical with outside thread 4 rotation directions; so compress lid 2, plastics cover body 3 is compressed, can prevent that the relative cylindrical shell 1 of plastics cover body 3 from rotating.
Above is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (4)
1. the protective cover of internal-thread petroleum machinery workpiece, comprise the cylindrical shell of rigidity, it is characterized in that, also be provided with and compress lid and the flanged plastics cover body of cylindrical shape and one end, the outer wall laminating of described plastics cover body inwall and cylindrical shell, and the inner side of described flange and one end of cylindrical shell offset, and plastics cover body is provided with outside thread; The outside of described compression lid top and flange offsets, and bottom is provided with collet threaded and is connected with the inwall of cylindrical shell, described collet threaded with external thread rotary to identical.
2. the protective cover of internal-thread petroleum machinery workpiece according to claim 1, is characterized in that, is radially provided with rotation hole along described compression lid and plastics cover body flanged pin one end.
3. the protective cover of internal-thread petroleum machinery workpiece according to claim 1, is characterized in that, on described plastics cover body and cylinder lateral wall, offers filler port.
4. the protective cover of internal-thread petroleum machinery workpiece according to claim 1, is characterized in that, described compression lid is hexagonal bar iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320878038.XU CN203682156U (en) | 2013-12-20 | 2013-12-20 | Protective cover for internal thread petroleum machinery workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320878038.XU CN203682156U (en) | 2013-12-20 | 2013-12-20 | Protective cover for internal thread petroleum machinery workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203682156U true CN203682156U (en) | 2014-07-02 |
Family
ID=51004095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320878038.XU Expired - Fee Related CN203682156U (en) | 2013-12-20 | 2013-12-20 | Protective cover for internal thread petroleum machinery workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203682156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800076A (en) * | 2016-03-31 | 2016-07-27 | 成都高峰石油机械有限公司 | Protecting device applied to petroleum machinery |
| CN105947397A (en) * | 2016-06-28 | 2016-09-21 | 无锡中地钻探装备有限公司 | Drill rod screw protection cap with oil supplementation opening |
-
2013
- 2013-12-20 CN CN201320878038.XU patent/CN203682156U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800076A (en) * | 2016-03-31 | 2016-07-27 | 成都高峰石油机械有限公司 | Protecting device applied to petroleum machinery |
| CN105947397A (en) * | 2016-06-28 | 2016-09-21 | 无锡中地钻探装备有限公司 | Drill rod screw protection cap with oil supplementation opening |
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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: 20140702 Termination date: 20141220 |
|
| EXPY | Termination of patent right or utility model |