CN215370560U - Torsional shear type bolt with high assembly precision - Google Patents
Torsional shear type bolt with high assembly precision Download PDFInfo
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- CN215370560U CN215370560U CN202121817750.XU CN202121817750U CN215370560U CN 215370560 U CN215370560 U CN 215370560U CN 202121817750 U CN202121817750 U CN 202121817750U CN 215370560 U CN215370560 U CN 215370560U
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Abstract
The utility model discloses a torsional shear type bolt with high assembly precision, which comprises a bolt body; the bolt body comprises a bolt head, a smooth rod, a threaded rod, a torsional shear rod and a plum blossom head which are integrally formed; the threaded rod is in threaded connection with a nut, and the nut is abutted against a washer sleeved on the threaded rod; the packing ring includes the horizontal part parallel with the nut, fixedly connected with integrated into one piece's annular portion on the horizontal part, and annular portion upper portion fixedly connected with integrated into one piece's arc portion, and the diameter of screw rod is less than the diameter of smooth rod, and the diameter of smooth rod is greater than the diameter of annular portion. According to the utility model, the gasket comprising the horizontal part, the annular part and the arc part is arranged, so that the contact area between the gasket and the bolted part is increased, the contact between the gasket and the inner wall of the bolt hole of the bolted part is increased after the gasket is extruded with the smooth rod, the torsion resistance is improved, the fixation stability of the nut is increased when and after the nut is installed, the torsional shear bolt is convenient to install, and the stability of the torsional shear bolt is improved.
Description
Technical Field
The utility model relates to the field of torsional shear type bolts, in particular to a torsional shear type bolt with high assembly precision.
Background
The traditional torsional shear type bolt adopts a ring-shaped washer which can improve the friction force between a nut and a bolted part, and the washer only has the end surface contacting with the double-jointed part, so that the contact area is small, and the improvement on the torsion is limited.
The application provides a torsional shear type bolt of high assembly accuracy.
SUMMERY OF THE UTILITY MODEL
Based on the defects in the prior art mentioned in the background art, the utility model provides the torsional shear type bolt with high assembly precision.
The utility model overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:
a torsional shear type bolt with high assembly precision comprises a bolt body; the bolt body comprises a bolt head, a smooth rod, a threaded rod, a torsional shear rod and a plum blossom head which are integrally formed; the threaded rod is in threaded connection with a nut, and the nut is abutted against a washer sleeved on the threaded rod; the packing ring includes the horizontal part parallel with the nut, fixedly connected with integrated into one piece's annular portion on the horizontal part, and annular portion upper portion fixedly connected with integrated into one piece's arc portion, and the diameter of screw rod is less than the diameter of smooth rod, and the diameter of smooth rod is greater than the diameter of annular portion.
As a further scheme of the utility model: the torsional shear rod comprises an upper connecting part fixedly connected with the threaded rod and a lower connecting part fixedly connected with the plum blossom head, and fracture grooves distributed circumferentially are formed in one side, close to the lower connecting part, of the connecting position of the lower connecting part and the upper connecting part.
As a further scheme of the utility model: the outer wall of the annular part is fixedly connected with protruding strips which are distributed circumferentially.
As a further scheme of the utility model: the gasket is provided with a through hole for the threaded rod to penetrate through, and the diameter of the through hole is larger than that of the threaded rod.
As a further scheme of the utility model: the threaded rod is provided with an external thread, and the nut is provided with an internal thread matched with the external thread.
As a further scheme of the utility model: the diameter of the plum-blossom head is smaller than that of the threaded rod.
As a further scheme of the utility model: the upper connecting part and the lower connecting part are both in a round table shape, and the volume of the upper connecting part is larger than that of the lower connecting part.
As a further scheme of the utility model: the breaking groove is a strip-shaped groove.
After adopting the structure, compared with the prior art, the utility model has the following advantages:
according to the utility model, the gasket comprising the horizontal part, the annular part and the arc part is arranged, so that the contact area between the gasket and the bolted part is increased, the contact between the gasket and the inner wall of the bolt hole of the bolted part is increased after the gasket is extruded with the smooth rod, the torsion resistance is improved, the fixation stability of the nut is increased when and after the nut is installed, the torsional shear bolt is convenient to install, and the stability of the torsional shear bolt is improved.
The friction between the gasket and the bolt hole of the bolted part is increased by arranging the convex strip; through being equipped with the turn round shear bar including last connecting portion and lower connecting portion, connecting portion and last connecting portion hookup location are close to down connecting portion one side and are equipped with the rupture groove down, and the fracture position of control turn round shear bar avoids damaging the threaded rod, and the bolt is cut to the protection turn round.
Drawings
Fig. 1 is a schematic view of the mounting structure of the present invention.
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
fig. 4 is a perspective view of the gasket of the present invention.
In the figure: 1. a bolt head; 2. a smooth rod; 3. a threaded rod; 4. plum blossom heads; 5. twisting a shear rod; 501. an upper connecting portion; 502. a lower connecting portion; 503. a breaking groove; 6. a gasket; 601. a horizontal portion; 602. an annular portion; 603. an arc-shaped portion; 604. a through hole; 7. a nut; 8. and (4) protruding strips.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 to 4, in an embodiment of the present invention, a torsional shear bolt with high assembly accuracy includes a bolt body; the bolt body comprises a bolt head 1, a smooth rod 2, a threaded rod 3, a torsional shear rod 5 and a plum blossom head 4 which are integrally formed; the threaded rod 3 is in threaded connection with a nut 7, and the nut 7 is abutted against a washer 6 sleeved on the threaded rod 3; the washer 6 comprises a horizontal part 601 parallel to the nut 7, an integrally formed annular part 602 is fixedly connected to the horizontal part 601, an integrally formed arc part 603 is fixedly connected to the upper part of the annular part 602, the diameter of the threaded rod 3 is smaller than that of the smooth rod 2, and the diameter of the smooth rod 2 is larger than that of the annular part 602.
Specifically, when the torsional shear bolt is installed, the threaded body is inserted into a bolt hole of a bolted part, the nut 7 is screwed so that the annular part 602 of the gasket 6 is inserted into the bolt hole of the bolted part, the nut 7 is screwed continuously so that the arc-shaped part 603 of the gasket 6 and the side surface of the smooth rod 2 are pressed against each other, the annular part 602 of the gasket 6 is expanded outwards, the friction force between the annular part 602 of the gasket 6 and the bolt hole of the bolted part is increased, the torsional strength is increased, the torsional resistance of the torsional shear bolt is improved, and the connection stability of the nut 7 is improved.
In this embodiment, the washer 6 is provided with a through hole 604 through which the threaded rod 3 passes, and the diameter of the through hole 604 is larger than that of the threaded rod 3.
In particular, it is convenient to move the washer 6 on the threaded rod 3.
In this embodiment, the threaded rod 3 is provided with an external thread, and the nut 7 is provided with an internal thread that cooperates with the external thread.
In the present embodiment, the diameter of the said plum-blossom head 4 is smaller than the diameter of the threaded rod 3.
In particular, it is convenient to screw the nut 7 and the plum blossom head 4.
In another embodiment of the present invention, the outer wall of the annular portion 602 is fixedly connected with a plurality of circumferentially distributed protruding strips 8.
Specifically, the friction force between the washer 6 and the inner wall of the bolt hole of the bolted member is further increased, and the torque resistance is improved.
In another embodiment of the present invention, the torsional bar 5 includes an upper connecting portion 501 fixedly connected to the threaded rod 3, and a lower connecting portion 502 fixedly connected to the quincuncial head 4, and the connecting position of the lower connecting portion 502 and the upper connecting portion 501 is provided with breaking grooves 503 distributed circumferentially on a side close to the lower connecting portion 502.
Specifically, when twisting off the quincuncial head 4, the twisting-off position is located at the lower connecting portion 502 due to the breaking groove 503, so that the twisting-off is facilitated, and the internal damage to the threaded rod 3 is avoided.
In this embodiment, the upper connecting portion 501 and the lower connecting portion 502 are both in the shape of a circular truncated cone, and the volume of the upper connecting portion 501 is larger than that of the lower connecting portion 502.
Specifically, by making the strength of the upper connection portion 501 larger than that of the lower connection portion 502, damage to the upper connection portion 501 is reduced.
In this embodiment, the breaking grooves 503 are strip-shaped grooves.
In particular, it is convenient to twist off the twist-cut bar 5.
The working principle is as follows:
when the torsional shear bolt is installed, the threaded body is inserted into a bolt hole of a bolted part, the nut 7 is screwed so that the annular part 602 of the gasket 6 is inserted into the bolt hole of the bolted part, the nut 7 is further screwed so that the arc-shaped part 603 of the gasket 6 and the side surface of the smooth rod 2 are pressed against each other, and then the annular part 602 of the gasket 6 is expanded outwards, so that the friction force between the annular part 602 of the gasket 6 and the bolt hole of the bolted part is increased, and further the torsional strength is increased; when twisting off the quincunx head 4, the twisting-off position is positioned at the lower connecting part 502 due to the breaking groove 503, so that the twisting-off is facilitated, and the internal damage to the threaded rod 3 is avoided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A torsional shear type bolt with high assembly precision comprises a bolt body; the bolt body comprises a bolt head (1), a smooth rod (2), a threaded rod (3), a torsional shear rod (5) and a plum blossom head (4) which are integrally formed; the novel screw rod is characterized in that the threaded rod (3) is in threaded connection with a nut (7), and the nut (7) is abutted against a washer (6) sleeved on the threaded rod (3); the gasket (6) comprises a horizontal part (601) parallel to the nut (7), an integrally formed annular part (602) is fixedly connected to the horizontal part (601), an integrally formed arc-shaped part (603) is fixedly connected to the upper part of the annular part (602), the diameter of the threaded rod (3) is smaller than that of the smooth rod (2), and the diameter of the smooth rod (2) is larger than that of the annular part (602).
2. The torsional shear type bolt with high assembly precision as claimed in claim 1, wherein the torsional shear bar (5) comprises an upper connecting part (501) fixedly connected with the threaded rod (3) and a lower connecting part (502) fixedly connected with the quincuncial head (4), and fracture grooves (503) distributed circumferentially are formed in the connecting position of the lower connecting part (502) and the upper connecting part (501) close to one side of the lower connecting part (502).
3. A high assembly accuracy twist-shear bolt according to claim 1, wherein the outer wall of the ring-shaped portion (602) is fixedly connected with circumferentially distributed protruding strips (8).
4. A high assembly accuracy twist-shear bolt as claimed in claim 1, wherein said washer (6) is provided with a through-hole (604) for the threaded rod (3) to pass through, the diameter of the through-hole (604) being greater than the diameter of the threaded rod (3).
5. A high assembly accuracy twist-shear bolt according to claim 1, wherein said threaded shaft (3) is provided with an external thread and said nut (7) is provided with an internal thread cooperating with the external thread.
6. A high assembly precision twist-shear bolt as claimed in claim 1, wherein the diameter of the said plum-blossom head (4) is smaller than the diameter of the threaded shank (3).
7. The torsional shear type bolt with high assembling accuracy as claimed in claim 2, wherein the upper connecting part (501) and the lower connecting part (502) are each in the shape of a circular truncated cone, and the volume of the upper connecting part (501) is larger than that of the lower connecting part (502).
8. The torsional shear type bolt with high assembling accuracy as claimed in claim 2, wherein said fracture groove (503) is a strip-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121817750.XU CN215370560U (en) | 2021-08-05 | 2021-08-05 | Torsional shear type bolt with high assembly precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121817750.XU CN215370560U (en) | 2021-08-05 | 2021-08-05 | Torsional shear type bolt with high assembly precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370560U true CN215370560U (en) | 2021-12-31 |
Family
ID=79616093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121817750.XU Active CN215370560U (en) | 2021-08-05 | 2021-08-05 | Torsional shear type bolt with high assembly precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370560U (en) |
-
2021
- 2021-08-05 CN CN202121817750.XU patent/CN215370560U/en active Active
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