CN210616394U - Polish rod bolt tightening device - Google Patents
Polish rod bolt tightening device Download PDFInfo
- Publication number
- CN210616394U CN210616394U CN201921723700.8U CN201921723700U CN210616394U CN 210616394 U CN210616394 U CN 210616394U CN 201921723700 U CN201921723700 U CN 201921723700U CN 210616394 U CN210616394 U CN 210616394U
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- cam
- tightening
- tightening shaft
- bolt
- rod bolt
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Abstract
The utility model discloses a polished rod bolt tightening device, which comprises a tightening device body, a compression cam and a tightening shaft, wherein a cam cavity is arranged on the tightening device body, one end of the tightening device body is provided with a regular hexagonal wrench clamping part, the center of the other end is provided with a threaded hole, and the threaded hole is communicated with the cam cavity; the side wall of the cam cavity is provided with a tightening shaft hole, the tightening shaft is arranged in the tightening shaft hole, the tightening shaft is fixedly provided with a compression cam, the compression cam is arranged in the cam cavity, and the side surface of the compression cam is provided with threads; the tightening shaft is provided with a polygonal clamping part. The utility model has simple and compact structure, convenient operation and convenient carrying; the utility model discloses a screw thread that compresses tightly the cam is bitten into the bolt top and is formed great frictional force, has realized polished rod bolt screw in or has unscrewed the screw hole, can not damage the screw thread of bolt, does not have the broken defect of detaining, has improved bolted connection's security.
Description
Technical Field
The utility model belongs to the technical field of the screw-thread tightening, in particular to polished rod bolt tightener.
Background
In the field of assembling mechanical parts at present, in the assembling process, most of assemblies between box bodies, between parts, between vehicle bodies and parts for vehicle maintenance and the like are connected through bolts and nuts. Meanwhile, a considerable part of bolt-nut connection is realized by directly screwing a polished rod bolt into a bolt hole and then pressing the polished rod bolt by a nut. To polished rod bolt twist bolt hole, current spanner can't be realized, generally screw up one end through two nuts, the other end is twisted in the bolt hole, this kind of mode need find two nuts with the specification twist pretension respectively, this process preparation time is longer, two nuts with the specification are difficult to find out simultaneously, just more difficult going on in field maintenance, and, adopt this kind of mode to polished rod bolt to screw up many times, can make polished rod bolt break and detain and scrap, make polished rod bolt have the potential safety hazard moreover.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses simple structure, compactness, convenient operation and portable's polished rod bolt tightening device, it has realized during polished rod bolt screw in screw hole, does not harm the screw thread of bolt moreover, has improved polished rod bolted connection's security.
The utility model adopts the technical proposal that: a polished rod bolt tightening device comprises a tightening device body, a pressing cam and a tightening shaft, wherein a cam cavity is formed in the tightening device body, a regular-hexagon wrench clamping part is arranged at one end of the tightening device body, a threaded hole is formed in the center of the other end of the tightening device body, and the threaded hole is communicated with the cam cavity; the side wall of the cam cavity is provided with a tightening shaft hole, the tightening shaft is arranged in the tightening shaft hole, the tightening shaft is fixedly provided with a compression cam, the compression cam is arranged in the cam cavity, and the side surface of the compression cam is provided with threads; the tightening shaft is provided with a polygonal clamping part.
In the polished rod bolt tightening device, the section of the clamping part on the tightening shaft is square.
In the polished rod bolt tightener described above, the pitch of the thread on the pressing cam was 60 ° and the pitch was 0.3 mm.
In the polished rod bolt tightening device, the material of the compression cam is as follows: 45Mn2, and the hardness is 45-55 HRC.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has simple and compact structure, convenient operation and convenient carrying; the utility model discloses a with the screw thread screw in screw hole of polished rod bolt one end to deepening the cam chamber, then rotatory cam for the screw thread on the compression cam bites into the bolt top, then through spanner centre gripping spanner clamping part, the screw bolt screw in or screw out screw hole can be realized to rotatory spanner, moreover, the utility model discloses a screw thread bites into the bolt top and forms great frictional force, has realized polished rod bolt screw in or screw out screw hole, can not damage the screw thread of bolt, does not have the broken defect of detaining, has improved bolted connection's security.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the pressing cam of the present invention.
Fig. 3 is a side view of the compression cam of the present invention.
Figure 4 is a block diagram of the present invention prior to the compression cam engaging the top of the bolt during use.
Fig. 5 is a structural view of the pressing cam biting into the top of the bolt in use of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a screw up the ware body 1, compress tightly cam 2 and screw up axle 3, screw up the ware body 1 on be equipped with cam chamber 11, screw up ware body 1 one end and be equipped with regular hexagon's spanner clamping part 12, other end center department is equipped with screw hole 13, screw hole 13 and cam chamber 11 intercommunication. The side wall of the cam cavity 11 is provided with a tightening shaft hole, the tightening shaft 3 is arranged in the tightening shaft hole, the tightening shaft 3 is fixedly provided with the pressing cam 2, and the pressing cam 2 is arranged in the cam cavity 11. The tightening shaft 3 is provided with a clamping part 31 with a square section; as shown in fig. 2 and 3, the side surface of the pressing cam 2 is provided with threads. The pitch of the thread is 0.3mm and the pitch is 60 °. The material of the compression cam 2 is: 45Mn2, and the hardness is 45-55 HRC.
As shown in fig. 4 and 5, the utility model discloses during the use, at first twist polished rod bolt 4's head the utility model discloses an in internal thread 13, the head is higher than bottom surface A0.5 mm of cam chamber 11, is convenient for compress tightly the thread tooth on the cam 2 and bite into, as shown in fig. 4. Then, the tightening shaft 3 is turned to make the high point of the pressing cam 2 press the head of the polished rod bolt 4, and the thread on the pressing cam 2 bites into the bolt top, increasing the frictional force between the pressing cam 2 and the bolt top when the bolt is rotated, as shown in fig. 5. Through spanner centre gripping spanner clamping part 12, get into the box screw with the bolt or back of screwing out the screw hole, loosen the cam again, when the bolt head does not have locking pressure, the internal thread of bolt tightening ware is in with the bolt and loosens the clearance state, the utility model discloses can easily take off.
Claims (4)
1. A polished rod bolt tightener is characterized in that: the device comprises a tightening device body, a compression cam and a tightening shaft, wherein a cam cavity is arranged on the tightening device body, a regular-hexagon wrench clamping part is arranged at one end of the tightening device body, a threaded hole is formed in the center of the other end of the tightening device body, and the threaded hole is communicated with the cam cavity; the side wall of the cam cavity is provided with a tightening shaft hole, the tightening shaft is arranged in the tightening shaft hole, the tightening shaft is fixedly provided with a compression cam, the compression cam is arranged in the cam cavity, and the side surface of the compression cam is provided with threads; the tightening shaft is provided with a polygonal clamping part.
2. The polish rod bolt tightener of claim 1, wherein: the section of the clamping part on the tightening shaft is square.
3. The polish rod bolt tightener of claim 1, wherein: the thread angle on the compression cam is 60 degrees and the thread pitch is 0.3 mm.
4. The polish rod bolt tightener of claim 1, wherein: the material of the pressing cam is as follows: 45Mn2, and the hardness is 45-55 HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723700.8U CN210616394U (en) | 2019-10-15 | 2019-10-15 | Polish rod bolt tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723700.8U CN210616394U (en) | 2019-10-15 | 2019-10-15 | Polish rod bolt tightening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210616394U true CN210616394U (en) | 2020-05-26 |
Family
ID=70761555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921723700.8U Active CN210616394U (en) | 2019-10-15 | 2019-10-15 | Polish rod bolt tightening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210616394U (en) |
-
2019
- 2019-10-15 CN CN201921723700.8U patent/CN210616394U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |