CN210799675U - Multiple locking device of screw thread - Google Patents
Multiple locking device of screw thread Download PDFInfo
- Publication number
- CN210799675U CN210799675U CN201921429800.XU CN201921429800U CN210799675U CN 210799675 U CN210799675 U CN 210799675U CN 201921429800 U CN201921429800 U CN 201921429800U CN 210799675 U CN210799675 U CN 210799675U
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- round nut
- locking
- tongue
- locking washer
- shaft
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Abstract
The utility model belongs to the technical field of locking and anti-loosening of screw threads of large-scale rotating equipment of nuclear power stations, in particular to a multi-locking and anti-loosening device for screw threads; the method comprises the following steps: the device comprises an opening round nut, a round nut, an inner tongue locking washer, a fastening screw, a shaft and a thrust disc; the inner tongue locking washer is sleeved on the shaft in a ring mode, one side surface of the inner tongue locking washer is attached to the outer surface of the thrust disc, a stopping tongue is arranged on the surface, attached to the thrust disc, of the inner tongue locking washer, and the stopping tongue is inserted into a key groove formed in the outer surface of the thrust disc; the round nut is screwed into the shaft; the opening round nut is screwed into the thread of the shaft, one side surface of the opening round nut is attached to the surface of the round nut, and the fastening screw is screwed into the other side surface of the opening round nut.
Description
Technical Field
The utility model belongs to the technical field of the large-scale rotating equipment screw thread locking of nuclear power station is locking, concretely relates to multiple locking device of screw thread.
Background
The large-scale rotating equipment of nuclear power station is at the operation in-process, and the locking of fastening of rotating member is especially important, and daily rotating equipment operation easily appears because of rotating member fastening loosening failure and the operation accident of being listed together that leads to, if appear fastening locking failure and lead to spare part not hard up, will lead to equipment unusable, directly influences the safe and stable operation of corresponding equipment and system, therefore influences daily work efficiency.
Therefore, it is necessary to design a multiple thread locking and anti-loosening device to improve the performance of thread locking and anti-loosening of large rotating equipment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose provides a multiple locking device of screw thread to the not enough of above-mentioned prior art for solve the large-scale rotating equipment of nuclear power station and loosen the technical problem who became invalid in the fastening of operation in-process.
The technical scheme of the utility model is that:
a threaded multiple lock anti-loosening device, comprising: the device comprises an opening round nut 1, a round nut 2, an inner tongue locking washer 3, a fastening screw 4, a shaft 5 and a thrust disc 6; a stop tongue is arranged on the surface of one side of the inner tongue locking washer 3, the inner tongue locking washer 3 is annularly sleeved on the shaft 5, the annular end surface of one side of the stop tongue of the inner tongue locking washer 3 is attached to the outer end surface of the hub of the thrust disc 6, and the stop tongue is inserted into a key groove formed in the inner ring of the thrust disc 6; the round nut 2 is screwed into the shaft 5; the opening round nut 1 is screwed into the thread of the shaft 5, one side surface of the opening round nut 1 is attached to the surface of the round nut 2, and the fastening screw 4 is screwed into the other side surface of the opening round nut 1.
An annular inner groove is formed in the radial 180-degree range of the open round nut 1.
The surface of one side of the open round nut 1 screwed into the fastening screw 4 is provided with a conical threaded hole for screwing in the conical surface of the fastening screw 4; the inner side surface of the annular inner groove of the open round nut 1 is provided with a threaded through hole for screwing the tail part of the fastening screw 4 in.
A plurality of rectangular grooves with the same size are uniformly distributed on the circumferential surfaces of the opening round nut 1 and the round nut 2; a plurality of rectangular convex parts are uniformly arranged on the surface of one side of the inner tongue locking washer 3, which is not provided with the stop tongue.
The width dimension of the stop tongue is matched with the width dimension of a key groove formed in the inner ring of the thrust disc 6.
Rectangular convex parts of the inner tongue locking washer 3 are embedded in rectangular grooves of the round nut 2 through knocking, and the outer ring of the inner tongue locking washer 3 is embedded with the rectangular grooves of the round nut 2 to prevent looseness.
The utility model discloses following beneficial effect has:
[1] the multiple-locking and anti-loosening device for the threads designed by the utility model has simple structure and is convenient to install;
[2] the multiple-locking and anti-loosening device for the threads, which is designed by the utility model, is also provided with the open round nut, so that the threads of the open round nut can be deformed to prevent loosening; double nuts are anti-loose;
[3] the multiple-locking anti-loosening device for the threads is not influenced by the position of the radial rectangular groove of the round nut, and can prevent the inner tongue locking washer from being turned over to the radial rectangular groove of the round nut in any position after the round nut is locked;
[4] the utility model discloses a multiple locking device of screw thread can effectively improve the locking performance of screw thread locking of large-scale rotating equipment.
Drawings
Fig. 1 is a schematic structural view of a multiple-locking and anti-loosening device for screw threads according to the present invention;
fig. 2 is a cross-sectional view of a multiple screw locking and anti-loosening device designed by the utility model;
fig. 3 is an installation schematic diagram of a screw multiple locking anti-loosening device designed by the utility model;
wherein: 1-opening round nut, 2-round nut, 3-inner tongue locking washer, 4-fastening screw, 5-shaft, 6-thrust disc
Detailed Description
The technology of the present invention is further described below:
as shown in fig. 1 to 3, a thread multiple-locking anti-loose device includes: the device comprises an opening round nut 1, a round nut 2, an inner tongue locking washer 3, a fastening screw 4, a shaft 5 and a thrust disc 6; a stop tongue is arranged on the surface of one side of the inner tongue locking washer 3, the inner tongue locking washer 3 is annularly sleeved on the shaft 5, the annular end surface of one side of the stop tongue of the inner tongue locking washer 3 is attached to the outer end surface of the hub of the thrust disc 6, and the stop tongue is inserted into a key groove formed in the inner ring of the thrust disc 6; the round nut 2 is screwed into the shaft 5; the opening round nut 1 is screwed into the thread of the shaft 5, one side surface of the opening round nut 1 is attached to the surface of the round nut 2, and the fastening screw 4 is screwed into the other side surface of the opening round nut 1.
An annular inner groove is formed in the radial 180-degree range of the open round nut 1.
The surface of one side of the open round nut 1 screwed into the fastening screw 4 is provided with a conical threaded hole for screwing in the conical surface of the fastening screw 4; the inner side surface of the annular inner groove of the open round nut 1 is provided with a threaded through hole for screwing the tail part of the fastening screw 4 in.
A plurality of rectangular grooves with the same size are uniformly distributed on the circumferential surfaces of the opening round nut 1 and the round nut 2; a plurality of rectangular convex parts are uniformly arranged on the surface of one side of the inner tongue locking washer 3, which is not provided with the stop tongue.
The width dimension of the stop tongue is matched with the width dimension of a key groove formed in the inner ring of the thrust disc 6.
Rectangular convex parts of the inner tongue locking washer 3 are embedded in rectangular grooves of the round nut 2 through knocking, and the outer ring of the inner tongue locking washer 3 is embedded with the rectangular grooves of the round nut 2 to prevent looseness.
The locking method of the thread multiple-locking anti-loosening device comprises the following steps:
the method comprises the following steps: an inner tongue locking washer 3 is arranged on a shaft 5, the annular end surface of one side of a stop tongue of the inner tongue locking washer 3 is attached to the outer end surface of the hub of the thrust disc 6, and the stop tongue of the inner tongue locking washer 3 is arranged in a key groove of the thrust disc 6;
step two: screwing the round nut 2 into the thread of the shaft 5 and locking; knocking the rectangular convex part of the inner tongue locking washer 3 into the rectangular groove of the round nut 2, so that the outer ring of the inner tongue locking washer 3 is knocked and deformed to be inlaid in the rectangular groove of the round nut 2 for preventing looseness; screwing the open round nut 1 into the thread of the shaft 5, and locking to perform double nut looseness prevention;
step three: screwing the fastening screw 4 into the threaded hole on the side surface of the split round nut 1, and enabling the fastening screw 4 to deform the thread of the split round nut 1 for preventing looseness; the sample punch is used for knocking the sample punching hole at the matching position of the outer surface of the fastening screw 4 and the outer surface of the open round nut 1, so that the fastening screw 4 and the open round nut 1 deform at the knocking position of the sample punching hole, the resistance of the loosening of the thread of the fastening screw 4 is increased, and the looseness prevention of the fastening screw 4 is carried out.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (6)
1. A multiple-locking and anti-loosening device for threads is characterized by comprising: the device comprises an opening round nut (1), a round nut (2), an inner tongue locking washer (3), a fastening screw (4), a shaft (5) and a thrust disc (6); a stop tongue is arranged on the surface of one side of the inner tongue locking washer (3), the inner tongue locking washer (3) is annularly sleeved on the shaft (5), the annular end surface of one side of the stop tongue of the inner tongue locking washer (3) is attached to the outer end surface of the hub of the thrust disc (6), and the stop tongue is inserted into a key groove formed in the inner ring of the thrust disc (6); the round nut (2) is screwed into the shaft (5); the opening round nut (1) is screwed into the thread of the shaft (5), one side surface of the opening round nut (1) is attached to the surface of the round nut (2), and the fastening screw (4) is screwed into the other side surface of the opening round nut (1).
2. The multiple-locking and anti-loosening device for screw threads as claimed in claim 1, wherein an annular inner groove is formed in the split round nut (1) within 180 degrees in the radial direction.
3. A threaded multiple-locking anti-loosening device as claimed in claim 2, wherein: the surface of one side of the open round nut (1) screwed into the fastening screw (4) is provided with a conical threaded hole for screwing in the conical surface of the fastening screw (4); the inner side surface of the annular inner groove of the open round nut (1) is provided with a threaded through hole for screwing the tail part of the fastening screw (4).
4. A threaded multiple-locking anti-loosening device as claimed in claim 3, wherein: a plurality of rectangular grooves with the same size are uniformly arranged on the circumferential surfaces of the open circular nut (1) and the circular nut (2); a plurality of rectangular convex parts are uniformly arranged on the surface of one side of the inner tongue locking washer (3) which is not provided with the stop tongue.
5. A threaded multiple-locking anti-loosening device as claimed in claim 4, wherein: the width dimension of the stop tongue is matched with the width dimension of a key groove formed in the inner ring of the thrust disc (6).
6. A threaded multiple-locking anti-loosening device as claimed in claim 5, wherein: rectangular convex parts of the inner tongue locking washer (3) are embedded in rectangular grooves of the round nut (2) through knocking, and the outer ring of the inner tongue locking washer (3) is embedded with the rectangular grooves of the round nut (2) to prevent looseness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429800.XU CN210799675U (en) | 2019-08-30 | 2019-08-30 | Multiple locking device of screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429800.XU CN210799675U (en) | 2019-08-30 | 2019-08-30 | Multiple locking device of screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210799675U true CN210799675U (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921429800.XU Active CN210799675U (en) | 2019-08-30 | 2019-08-30 | Multiple locking device of screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210799675U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454487A (en) * | 2019-08-30 | 2019-11-15 | 江苏核电有限公司 | A kind of screw thread multi-locking locking device and its locking method |
-
2019
- 2019-08-30 CN CN201921429800.XU patent/CN210799675U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454487A (en) * | 2019-08-30 | 2019-11-15 | 江苏核电有限公司 | A kind of screw thread multi-locking locking device and its locking method |
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