CN215568703U - Tension adjusting bolt - Google Patents
Tension adjusting bolt Download PDFInfo
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- CN215568703U CN215568703U CN202122035097.8U CN202122035097U CN215568703U CN 215568703 U CN215568703 U CN 215568703U CN 202122035097 U CN202122035097 U CN 202122035097U CN 215568703 U CN215568703 U CN 215568703U
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- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000006978 adaptation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 14
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The application relates to a tension adjusting bolt, and relates to the technical field of bolts. It includes the first bolt spare and the second bolt spare of coaxial setting, first bolt spare is including the first threaded rod of coaxial setting, first twist head and adjusting threaded rod soon, first twist first rigid coupling between first threaded rod and adjusting threaded rod soon, second bolt spare is including the second threaded rod and the second twist head of coaxial setting soon, the second is twisted first coaxial rigid coupling in the tip position department of second threaded rod soon, the second is twisted first and is seted up the regulation hole with adjusting threaded rod adaptation on the terminal surface of first adjusting threaded rod of orientation soon, adjusting threaded rod threaded connection is in the regulation hole, in the screw thread of first threaded rod, the screw thread of second threaded rod and the three kinds of screw threads of adjusting threaded rod, the screw thread parameter of two kinds of screw threads is the same, and is different with the screw thread parameter of another kind of screw thread. This application can stable control adjusting bolt the effort that receives in the use.
Description
Technical Field
The application relates to the field of bolt technology, in particular to a tension adjusting bolt.
Background
The bolt is used for tightly connecting two parts with through holes. The connection method using the bolt is called as bolt connection, and the bolt connection is one of detachable connections.
When two pipelines are connected through flanges, a plurality of groups of bolts are arranged around the flange plate to be connected. The bolt connection in the related art generally adopts common bolts to perform threaded connection on the flange plate.
To the correlation technique among the aforesaid, the inventor discovers when the staff need change parts such as the sealing ring between the pipeline, and ordinary bolt can only play basic location and fastening effect, and the back is loosened with the bolt to the staff, and the mutual butt's the condition often can appear in the port of two pipelines, needs the staff to use the pinch bar to continuously prize open certain operating space with the pipeline of butt, carries out the dismantlement and the change of pipeline inner part again to manpower resources have been wasted.
SUMMERY OF THE UTILITY MODEL
In order to improve the bolt among the correlation technique and only to play the effect of location and fastening, need the staff to use the pinch bar to prize the pipeline of butt open certain operating space, carry out the dismantlement and the change of pipeline inner part again to manpower resources's problem has been wasted, this application provides a pulling force adjusting bolt.
The application provides a tension adjusting bolt adopts following technical scheme:
the utility model provides a pulling force adjusting bolt, including first bolt spare and the second bolt spare of coaxial setting, first bolt spare is including the first threaded rod of coaxial setting, first twist first and adjusting threaded rod, first twist first rigid coupling between first threaded rod and adjusting threaded rod, second bolt spare is including the second threaded rod and the second twist first of coaxial setting, the second is twisted first coaxial rigid coupling in the tip position department of second threaded rod, the second is twisted first and is offered the regulation hole with adjusting threaded rod adaptation on the terminal surface of first adjusting threaded rod of orientation, adjusting threaded rod threaded connection is in the regulation hole, in the screw thread of first threaded rod, the screw thread of second threaded rod and the three kinds of screw threads of adjusting threaded rod, two kinds of screw thread parameters are the same, and different with another kind of screw thread parameter.
Through adopting above-mentioned technical scheme, the staff can be to the distance between adjusting bolt adapting unit stably adjust, no longer need the staff to use the pinch bar to prize the pipeline of butt open to it is more convenient when making the staff operate between adjusting bolt adapting unit, reduced manpower resources's waste.
Optionally, the screw direction and the screw pitch of the first threaded rod thread and the second threaded rod thread are the same, and the screw direction or the screw pitch of the adjusting threaded rod thread and the first threaded rod thread is different.
By adopting the technical scheme, when the first bolt piece and the second bolt piece rotate synchronously, the length of the adjusting bolt between the flange plates is not changed, when the first bolt piece and the second bolt piece rotate relatively, the length of the adjusting bolt between the flange plates is changed, and the change of the length of the adjusting bolt between the flange plates can cause the stress of the adjusting bolt to change. The operator can change the force to which the adjusting bolt is subjected by controlling the relative rotation of the first and second bolt members.
Optionally, the first bolt member and the second bolt member are provided with a limiting structure for reducing relative rotation between the first bolt member and the second bolt member.
By adopting the technical scheme, after the adjusting bolt is adjusted, the limiting structure can reduce the relative rotation between the first bolt piece and the second bolt piece, so that the situation that the adjusting bolt is far away from the second bolt piece after being vibrated, the pulling force of the adjusting bolt on the flange plate is reduced, and the connection stability of the adjusting bolt on the flange plate is reduced.
Optionally, the limiting structure includes a first limiting hole, a second limiting hole and a limiting rod, the first limiting hole and the second limiting hole are respectively located on the first bolt piece and the second bolt piece, and two ends of the limiting rod are respectively located in the first limiting hole and the second limiting hole.
By adopting the technical scheme, after the adjusting bolt is installed, the limiting rod can reduce the relative rotation of the first bolt piece and the second bolt piece.
Optionally, the first limiting hole or the second limiting hole is multiple, and the multiple first limiting holes or the multiple second limiting holes are distributed around the axis of the adjusting bolt.
Through adopting above-mentioned technical scheme, after adjusting bolt adjusts the completion, first spacing hole corresponds with the spacing hole of second more easily for the staff is more convenient when wearing to establish the gag lever post.
Optionally, a spring is fixedly connected to the limiting rod, and the limiting rod is connected to the adjusting bolt through the spring.
Through adopting above-mentioned technical scheme, increased gag lever post and adjusting bolt's wholeness to a certain extent, reduced the condition that the gag lever post dropped.
Optionally, the spring is a conical spring, one end of the spring is coaxially and fixedly connected with the limiting rod, the other end of the spring is coaxially and fixedly connected to the inner wall of the first limiting hole or the second limiting hole, and the diameter of the limiting rod is smaller than the aperture of the limiting hole where the spring is located.
Through adopting above-mentioned technical scheme, increased the home range of gag lever post under the spring restriction to a certain extent, the gag lever post has more regulation spaces, makes the staff when installing adjusting bolt, can adjust the position of gag lever post more conveniently to the influence of gag lever post to staff's installation adjusting bolt process has been reduced to a certain extent.
Optionally, the screw thread turning direction of the adjusting threaded rod is the same as the turning direction of the first threaded rod, and the screw pitch of the adjusting threaded rod is different from that of the first threaded rod.
Through adopting above-mentioned technical scheme, under the influence of adjusting the difference between pitch and the first pitch, adjusting bolt's regulation stroke is less, and adjusting speed is slower, and at the in-process that uses adjusting bolt, the staff can be through coming the relative rotation between the first bolt spare of control and the second bolt spare, comes to finely tune adjusting bolt's atress condition.
Optionally, the thread direction of the adjusting threaded rod is opposite to the thread direction of the first threaded rod.
By adopting the technical scheme, under the influence of the sum of the adjusting screw pitch and the first screw pitch, the adjusting stroke of the adjusting bolt is larger, and the adjusting speed is higher. During the process of using the adjusting bolt, a worker can control the relative rotation between the first bolt piece and the second bolt piece to greatly change the stress of the adjusting bolt.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by keeping the thread parameters of the adjusting thread and the first thread or the second thread different, a worker can change the stress condition of the adjusting bolt in the use process by screwing the first bolt piece or the second bolt piece, so as to control the part connected with the adjusting bolt;
2. the limiting structures are arranged on the first bolt piece and the second bolt piece, so that the relative rotation of the first bolt piece and the second bolt piece after the adjustment of the first bolt piece and the second bolt piece is finished is reduced;
3. the limiting rod is connected with the connecting bolt through the spring, so that the falling condition of the limiting rod is reduced.
Drawings
Fig. 1 is an external structural schematic view of an adjusting bolt in a use condition in embodiment 1 of the present application.
Fig. 2 is a sectional view of the internal structure of an adjusting bolt in embodiment 1 of the present application.
Fig. 3 is an external structural view of an adjusting bolt in embodiment 2 of the present application.
Description of reference numerals: 1. a first bolt member; 11. a first screwing head; 12. a first threaded rod; 13. adjusting the threaded rod; 2. a second bolt member; 21. a second threaded rod; 22. a second screwing head; 23. an adjustment hole; 3. a pipeline; 4. a flange plate; 5. a limiting structure; 51. a first limit hole; 52. a second limiting hole; 53. a limiting rod; 54. a spring; 55. a guide ring.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a tension adjusting bolt. Referring to fig. 1 and 2, the adjusting bolt includes a first bolt member 1 and a second bolt member 2 that are coaxially disposed, the first bolt member 1 includes a first screwing head 11, a first threaded rod 12 and an adjusting threaded rod 13 that are coaxially disposed, the first screwing head 11 is a polygonal cylinder structure, the first screwing head 11 is fixedly connected between the first threaded rod 12 and the adjusting threaded rod 13, and the first threaded rod 12 is threadedly connected in a threaded hole of the flange plate 4 of the pipeline 3.
The threads on the first threaded rod 12 are first threads, the threads on the second threaded rod 21 are second threads, and the threads on the adjusting threaded rod 13 are adjusting threads, wherein two of the three threads have the same thread parameters and are different from the third thread parameters. The thread parameters in this embodiment refer to the direction or pitch of the thread.
In the embodiment of the present application, the case where the thread parameters of the first thread and the second thread are the same and the thread parameters of the adjusting thread and the first thread are different is selected for description.
When adjusting bolt's both ends difference threaded connection was on two ring flanges 4, when the staff twisted adjusting bolt and made first bolt spare 1 and second bolt spare 2 take place relative rotation, because the screw thread parameter of adjusting threaded rod 13 is different with first threaded rod 12 screw thread parameter, adjusting bolt's length can change between two ring flanges 4 to the effort that makes adjusting bolt receive can change, and then makes adjusting bolt drive ring flange 4 and produce the displacement.
When the staff need dismantle and change parts such as sealing ring at pipeline 3 port, no longer need to remove the adjusting bolt completely. The staff can fix second bolt spare 2 earlier, revolves soon first bolt spare 1 and makes the distance between two ring flanges 4 steadily increase, and under adjusting bolt's support, the interval of two pipeline 3 connection tip steadily increases, and the staff can take out or pack into parts such as sealing ring of mouth of pipe department more easily.
Referring to fig. 1 and 2, the first screwing head 11 and the second screwing head 22 are provided with a limiting structure 5. The limiting structure 5 can adopt a fastening nut screwed on the adjusting threaded rod 13, after the position of the adjusting bolt is adjusted, the fastening nut is screwed to enable the fastening nut and the first screwing head 11 to be tightly abutted against each other, and the situation that the first bolt piece 1 and the second bolt piece 2 rotate relatively is reduced by increasing the friction force of screw threads in the matching of the adjusting threaded rod 13 and the adjusting hole.
The limiting structure 5 can also adopt a limiting rod 53 which is inserted in the first screwing head 11 and the second screwing head 22. The limiting structure 5 in this embodiment is illustrated by using a limiting rod 53. The limiting structure 5 comprises a first limiting hole 51, a second limiting hole 52 and a limiting rod 53.
The first limiting hole 51 is formed in the end face, facing the second screwing head 22, of the first screwing head 11, and the first screwing head 11 is penetrated through the first limiting hole 51; the second limiting hole 52 is opened on the end surface of the second screwing head 22 facing the first screwing head 11, and the second limiting hole 52 penetrates the second screwing head 22. Both ends of the limiting rod 53 are respectively positioned in the first limiting hole 51 and the second limiting hole 52.
The gag lever post 53 is the rigid rod, and the gag lever post 53 can restrict the relative rotation of first bolt spare 1 and second bolt spare 2 to reduced adjusting bolt when receiving the vibration or rocking, relative rotation appears in first bolt spare 1 and second bolt spare 2 and leads to adjusting bolt to reduce the pulling force of ring flange 4, caused the condition that adjusting bolt reduces the connection stability of ring flange 4.
The first limiting holes 51 on the first limiting member are provided in a plurality, and the plurality of first limiting holes 51 are distributed at equal intervals around the axis of the adjusting bolt.
After the staff finishes the fastening to adjusting bolt, can stretch into the first spacing hole 51 that is closest with the tip of gag lever post 53 in, make limit structure 5's installation more convenient.
Referring to fig. 1 and 2, the diameter of the limiting rod 53 is smaller than the diameter of the second limiting hole 52. A spring 54 is disposed on the inner wall of the second stopper hole 52. The end of the spring 54 departing from the first position-limiting hole 51 is fixed on the inner wall of the second position-limiting hole 52, and the end of the spring 54 facing the first position-limiting hole 51 is mounted at the middle position of the outer side wall of the position-limiting rod 53.
The gag lever post 53 passes through spring 54 to be installed on the piece is twisted soon to the second, has improved the wholeness between gag lever post 53 and the adjusting bolt, and spring 54 can make gag lever post 53 keep wearing to establish the state in first spacing hole 51 and the spacing hole 52 of second to a certain extent simultaneously, has reduced limit structure 5 and when carrying out spacingly to first bolt spare 1 and second bolt spare 2, because the gag lever post 53 slippage leads to the condition that limit structure 5's spacing effect reduces.
The spring 54 is a conical spring 54, one end of the spring 54 with a larger diameter is fixedly connected with the inner wall of the second limiting hole 52, and one end of the spring 54 with a smaller diameter is coaxially and fixedly connected with the outer side wall of the center of the limiting rod 53. The limiting rod 53 can have more moving ranges in the second limiting hole 52, and the flexibility of the limiting rod 53 is increased to a certain extent.
The second limiting hole 52 is provided with a guide ring 55 at the position close to the opening of the first limiting hole 51, the inner wall of the guide ring 55 is attached and fixedly connected with the inner wall of the second limiting hole 52, and the limiting rod 53 is connected in the guide ring 55 in a sliding manner.
The guide ring 55 reduces the deviation of the limiting rod 53 in the moving process, and reduces the influence of the collision of the limiting rod 53 and the spring 54 on the spring 54 after the limiting rod 53 deviates in the moving process.
Example 1:
the direction of rotation of the adjusting threaded rod 13 is the same as the direction of rotation of the first threaded rod 12, and the pitch of the adjusting threaded rod 13 is smaller than the pitch of the first threaded rod 12.
The implementation principle of a tension adjusting bolt in embodiment 1 of the application is as follows:
when the staff will install adjusting bolt between two ring flanges 4, can pull out spacing pole 53 behind the spacing hole 52 of second, twist adjusting threaded rod 13 again in adjusting hole 23, reduce adjusting bolt's total length, make adjusting bolt put into more easily between two ring flanges 4.
After the first threaded rod 12 is screwed into the threaded hole of one flange 4, the adjusting threaded rod 13 is screwed so that the adjusting threaded rod 13 extends out of the adjusting hole 23 until the end of the second threaded rod 21 reaches the position of the threaded hole of the other flange 4. At the moment, the first bolt piece 1 and the second bolt piece 2 are synchronously screwed, so that the two ends of the adjusting bolt are respectively in threaded connection with the two flange plates 4.
After the two ends of the adjusting bolt are respectively connected to the two flange plates 4 in a threaded manner, the second bolt piece 2 is fixed and the first bolt piece 1 is screwed, so that the adjusting threaded rod 13 is separated from the adjusting hole 23. Since the adjusting screw thread has the same screw thread direction as the first screw thread, the first threaded rod 12 is screwed into the threaded hole of the flange 4.
Because the screw pitch of the adjusting threaded rod 13 is smaller than that of the first threaded rod 12, in the screwing process of the first bolt piece 1, the stroke of the first threaded rod 12 entering the corresponding threaded hole is larger than the stroke of the adjusting threaded rod 13 departing from the adjusting hole 23, so that the length of the adjusting bolt between the flange plates 4 is reduced, the tensile force applied by the adjusting bolt is increased, and the flange plate 4 at the end part of the first threaded rod 12 is pulled to the flange plate 4 at the end part of the second threaded rod 21 and fastened.
After the flange plate 4 is fastened by the adjusting bolt, the limiting of the limiting rod 53 is loosened, so that one end, facing the first limiting hole 51, of the limiting rod 53 extends into the first limiting hole 51 under the action of the spring 54, the limiting rod 53 limits the space between the first bolt piece 1 and the second bolt piece 2, and the relative rotation of the first bolt piece 1 and the second bolt piece 2 is reduced.
When the staff member needs to remove and replace the sealing member and the like at the port of the pipeline 3, the bolt is not required to be completely removed. The limiting rod 53 is firstly pulled out of the first limiting hole 51, the second bolt piece 2 is fixed, and then the adjusting bolt is screwed to screw the adjusting threaded rod 13 into the adjusting hole 23.
At this moment, the length of the adjusting bolt between the two flange plates 4 can be stably increased, the distance between the end parts of the pipelines 3 is increased under the support of the adjusting bolt, and workers can more easily disassemble and assemble the sealing rings and other parts at the end parts of the pipelines 3.
Example 2:
referring to fig. 3, the difference from embodiment 1 is that the screw thread direction of the adjustment screw rod 13 is opposite to the screw thread direction of the first screw rod 12.
The implementation principle of a tension adjusting bolt in embodiment 2 of the application is as follows: when the two ends of the adjusting bolt are respectively in threaded connection with the two flange plates 4, the adjusting threaded rod 13 is screwed into the adjusting hole 23 by screwing the first bolt piece 1 after the second bolt piece 2 is fixed, and the adjusting thread is opposite to the thread screwing direction of the first thread, so that the first threaded rod 12 can be screwed into the thread hole of the flange plate 4, the length of the adjusting bolt between the flange plates 4 is reduced in the screwing process of the first bolt piece 1, the tensile force of the bolt is increased, and the flange plate 4 at the end part of the first threaded rod 12 is pulled to the flange plate 4 at the end part of the second threaded rod 21 and is fastened.
The process of installing the adjusting bolt into the flange plate 4 and the process of using the limiting structure 5 in the embodiment 2 are the same as those in the embodiment 1, and are not described again here.
It should be noted that the adjusting stroke and the adjusting speed of the adjusting bolt in embodiment 1 are both affected by the difference between the adjusting pitch and the first pitch, and the adjusting stroke and the adjusting speed of the adjusting bolt in embodiment 2 are both affected by the sum of the adjusting pitch and the first pitch.
The adjusting stroke and the adjusting speed of the adjusting bolt in the embodiment 1 are smaller than those of the adjusting bolt in the embodiment 2, so that the adjusting bolt in the embodiment 2 is more suitable for the working condition requiring larger displacement, and the adjusting bolt in the embodiment 1 is more suitable for the condition requiring more precise adjustment.
Example 3:
the difference from embodiment 1 is that the pitch of the adjusting threaded rod 13 is larger than that of the first threaded rod 12.
The implementation principle of a tension adjusting bolt in embodiment 3 of the application is as follows: when the two ends of the adjusting bolt are respectively connected to the two flange plates 4 by screw threads, the first bolt member 1 is screwed after the second bolt member 2 is fixed, so that the adjusting threaded rod 13 is screwed into the adjusting hole 23, and the first threaded rod 12 is screwed into the threaded hole of the flange plate 4 because the adjusting thread and the first thread have the same screw thread direction.
Because the screw pitch of the adjusting threaded rod 13 is greater than the screw pitch of the first threaded rod 12, in the screwing process of the first bolt piece 1, the stroke of the first threaded rod 12 entering the corresponding threaded hole is smaller than the stroke of the adjusting threaded rod 13 departing from the adjusting hole 23, the length of the adjusting bolt between the flange plates 4 is reduced, and therefore the tensile force applied to the bolt is increased, and the flange plate 4 at the end part of the first threaded rod 12 is pulled to the flange plate 4 at the end part of the second threaded rod 21 and fastened.
It should be noted that the adjusting stroke and the adjusting speed of the adjusting bolt in embodiment 1 and the adjusting bolt in embodiment 3 are both affected by the difference between the adjusting pitch and the first pitch, but the screwing directions of the adjusting bolt in embodiment 1 and the adjusting bolt in embodiment 3 are opposite when the acting force of the adjusting bolt is adjusted.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A tension adjusting bolt is characterized in that: the bolt comprises a first bolt piece (1) and a second bolt piece (2) which are coaxially arranged, wherein the first bolt piece (1) comprises a first threaded rod (12), a first screwing head (11) and an adjusting threaded rod (13) which are coaxially arranged, the first screwing head (11) is fixedly connected between the first threaded rod (12) and the adjusting threaded rod (13), the second bolt piece (2) comprises a second threaded rod (21) and a second screwing head (22) which are coaxially arranged, the second screwing head (22) is coaxially and fixedly connected at the end position of the second threaded rod (21), an adjusting hole (23) matched with the adjusting threaded rod (13) is formed in the end surface, facing the first adjusting threaded rod (13), of the second screwing head (22), the adjusting threaded rod (13) is in threaded connection with the adjusting hole (23), and the threads of the first threaded rod (12), the threads of the second threaded rod (21) and the adjusting threaded rod (13), the two thread parameters are the same and different from the other thread parameter.
2. A tension adjusting bolt as defined in claim 1, wherein: the thread parameters of the first threaded rod (12) and the second threaded rod (21) are the same, and the thread parameters of the adjusting threaded rod (13) and the first threaded rod (12) are different.
3. A tension adjusting bolt as defined in claim 1, wherein: and the first bolt piece (1) and the second bolt piece (2) are provided with limiting structures (5) for reducing the relative rotation between the first bolt piece (1) and the second bolt piece (2).
4. A tension adjusting bolt as defined in claim 3, wherein: the limiting structure (5) comprises a first limiting hole (51), a second limiting hole (52) and a limiting rod (53), the first limiting hole (51) and the second limiting hole (52) are respectively located on the first bolt piece (1) and the second bolt piece (2), and two ends of the limiting rod (53) are respectively located in the first limiting hole (51) and the second limiting hole (52).
5. A tension adjusting bolt as defined in claim 4, wherein: the number of the first limiting holes (51) or the second limiting holes (52) is multiple, and the multiple first limiting holes (51) or the multiple second limiting holes (52) are distributed around the axis of the adjusting bolt.
6. A tension adjusting bolt as defined in claim 4, wherein: a spring (54) is fixedly connected to the limiting rod (53), and the limiting rod (53) is connected to the adjusting bolt through the spring (54).
7. A tension adjusting bolt as defined in claim 6, wherein: the spring (54) is a conical spring, one end of the spring (54) is coaxially and fixedly connected with the limiting rod (53), the other end of the spring (54) is coaxially and fixedly connected to the inner wall of the first limiting hole (51) or the inner wall of the second limiting hole (52), and the diameter of the limiting rod (53) is smaller than the aperture of the limiting hole where the spring (54) is located.
8. A tension adjusting bolt as defined in claim 2, wherein: the screw thread turning direction of the adjusting threaded rod (13) is the same as that of the first threaded rod (12), and the screw pitch of the adjusting threaded rod (13) is different from that of the first threaded rod (12).
9. A tension adjusting bolt as defined in claim 2, wherein: the thread turning direction of the adjusting threaded rod (13) is opposite to that of the first threaded rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122035097.8U CN215568703U (en) | 2021-08-26 | 2021-08-26 | Tension adjusting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122035097.8U CN215568703U (en) | 2021-08-26 | 2021-08-26 | Tension adjusting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215568703U true CN215568703U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122035097.8U Active CN215568703U (en) | 2021-08-26 | 2021-08-26 | Tension adjusting bolt |
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| Country | Link |
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| CN (1) | CN215568703U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119642019A (en) * | 2025-02-18 | 2025-03-18 | 江苏运通膨胀节制造有限公司 | Synchronous regulation type expansion joint |
-
2021
- 2021-08-26 CN CN202122035097.8U patent/CN215568703U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119642019A (en) * | 2025-02-18 | 2025-03-18 | 江苏运通膨胀节制造有限公司 | Synchronous regulation type expansion joint |
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