CN215634315U - Pretightening force compensation anti-loose gasket - Google Patents
Pretightening force compensation anti-loose gasket Download PDFInfo
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- CN215634315U CN215634315U CN202120578031.0U CN202120578031U CN215634315U CN 215634315 U CN215634315 U CN 215634315U CN 202120578031 U CN202120578031 U CN 202120578031U CN 215634315 U CN215634315 U CN 215634315U
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Abstract
The utility model discloses a pre-tightening force compensation anti-loosening gasket, and particularly relates to the technical field of gaskets. This check gasket of pretightning force compensation is through being provided with the gasket, elasticity gasket and gasket down, will go up the gasket and place the top at gasket down with its outside elasticity gasket when using, because the thickness of elasticity gasket is greater than gasket down, so its rigidity is better, pass first through-hole and second through-hole with the bolt during installation, and rotate the bolt and make its decline, the gasket is pressed down to the bolt head, it drives elasticity gasket decline and leads to the elasticity gasket to be flattened to go up the gasket, because elasticity gasket has the variable rigidity characteristic, make less deformation just can produce very big load, so can compensate the pretightning force loss that leads to because plastic deformation or connecting piece inner structure lax, realized can compensate the loss of pretightning force.
Description
Technical Field
The utility model relates to the technical field of gaskets, in particular to a pre-tightening force compensation anti-loosening gasket.
Background
The anti-loosening gasket is a small-sized and simple-structured part, is used for playing the effect of preventing the bolt from loosening before the bolt and the connecting piece, but the existing loosening gasket has insufficient fastening performance, cannot compensate the pretightening force and easily generates the displacement phenomenon, so that the self practicability is insufficient, and the anti-loosening gasket capable of meeting the practicability of all aspects is needed.
In the process of implementing the utility model, the inventor finds that at least the following problems in the prior art are not solved:
(1) the traditional anti-loosening gasket has a simple and fixed structure, and cannot compensate the pretightening force loss caused by plastic deformation or loose internal structure of a connecting piece;
(2) the traditional anti-loosening gasket is easy to loosen due to the fact that the outer part of the traditional anti-loosening gasket is smooth after installation;
(3) traditional check washer, easily receive external force's influence after the installation, lead to self to take place the phenomenon of displacement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pretightening force compensation anti-loosening gasket to solve the problem that pretightening force loss caused by plastic deformation or loose internal structure of a connecting piece cannot be compensated in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the pre-tightening force compensation anti-loosening gasket comprises a first through hole, a locking structure is arranged at the top end of the first through hole, a second through hole is arranged at the bottom end of the first through hole, a positioning structure is arranged at the bottom end of the locking structure, and a compensation structure is arranged outside the first through hole;
the compensation structure comprises an upper gasket, the upper gasket is provided with the outer part of a first through hole, the outer part of the upper gasket is fixedly connected with an elastic gasket, the outer part of a second through hole is provided with a lower gasket, and the elastic gasket is movably connected with the lower gasket.
Preferably, the central line of the upper gasket and the central line of the lower gasket are on the same vertical plane, and the diameter of the inside of the first through hole is equal to the diameter of the inside of the second through hole.
Preferably, the locking structure comprises a bottom tooth surface, a wedge-shaped tooth surface, a top tooth surface and a wedge-shaped tooth socket, the bottom tooth surface is fixedly connected to the bottom end of the lower gasket, the wedge-shaped tooth surface is fixedly connected to the top end of the lower gasket, the top tooth surface is fixedly connected to the top end of the elastic gasket, the wedge-shaped tooth socket is fixedly connected to the bottom end of the elastic gasket, and the wedge-shaped tooth socket is movably connected with the wedge-shaped tooth surface.
Preferably, the center line of the bottom tooth surface and the center line of the lower pad are on the same vertical plane, and the center line of the wedge tooth surface and the center line of the lower pad are on the same vertical plane.
Preferably, the center line of the top tooth surface and the center line of the elastic gasket are on the same vertical plane, and the center line of the wedge-shaped tooth socket and the center line of the elastic gasket are on the same vertical plane.
Preferably, location structure comprises arc picture peg and arc slot, equidistant fixed connection of arc picture peg is around the elastic gasket bottom, the equidistant inlay of arc slot is around the gasket top under, arc picture peg and arc slot swing joint.
Preferably, the length of the inside of the arc-shaped slot is greater than that of the arc-shaped inserting plate, and the height of the arc-shaped inserting plate is smaller than that of the inside of the arc-shaped slot.
Compared with the prior art, the utility model has the beneficial effects that: the pre-tightening force compensation anti-loosening gasket not only can compensate the loss of pre-tightening force, realizes the prevention of bolt loosening, but also realizes the prevention of self displacement;
(1) the upper gasket and the elastic gasket outside the upper gasket are arranged at the top end of the lower gasket when the device is used, the rigidity of the elastic gasket is better because the thickness of the elastic gasket is larger than that of the lower gasket, a bolt passes through the first through hole and the second through hole when the device is installed, the bolt is rotated to descend the bolt, the bolt head presses the upper gasket downwards, the upper gasket drives the elastic gasket to descend to flatten the elastic gasket, and because the elastic gasket has the rigidity changing characteristic, the small deformation can generate a great load, so the pretightening force loss caused by plastic deformation or loose internal structure of a connecting piece can be compensated, and the pretightening force loss can be compensated;
(2) by arranging the bottom tooth surface, the wedge tooth surface, the top tooth surface and the wedge-shaped tooth groove, when a bolt is pre-tightened after installation, the top tooth surface on the elastic gasket is wedged into a bolt head contact surface, the bottom tooth surface at the bottom end of the lower gasket is wedged into a connecting piece surface, and the wedge-shaped tooth groove at the bottom end of the elastic gasket and the wedge tooth surface at the top end of the lower gasket are in wedge engagement with each other, so that a self-locking function is realized;
(3) through being provided with arc picture peg and arc slot, when the installation, place the top of gasket under with elastic gasket, and make the arc picture peg insert the inside of the arc slot that corresponds, press the gasket messenger when the bolt head down, elastic gasket takes place deformation, after elastic gasket is flattened, arc picture peg displacement to one side of the inside of arc slot, make the laminating of arc picture peg lean on outer one side in arc slot inside, all laminate on the inside wall of arc slot back when multiunit arc picture peg, alright fix a position elastic gasket, realized can prevent to go up and take place the skew between gasket and the elastic gasket.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a bottom view of the resilient pad of the present invention;
FIG. 3 is a schematic top view of the lower pad of the present invention;
FIG. 4 is a schematic top view of the resilient gasket of the present invention.
In the figure: 1. a first through hole; 2. an upper gasket; 3. an elastic pad; 4. a locking structure; 401. a bottom flank surface; 402. a wedge-shaped tooth surface; 403. a top tooth surface; 404. a wedge-shaped tooth socket; 5. a positioning structure; 501. an arc-shaped inserting plate; 502. an arc slot; 6. a lower gasket; 7. a second via.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1-4, the pre-tightening force compensation anti-loosening gasket comprises a first through hole 1, wherein a locking structure 4 is arranged at the top end of the first through hole 1, a second through hole 7 is arranged at the bottom end of the first through hole 1, a positioning structure 5 is arranged at the bottom end of the locking structure 4, and a compensation structure is arranged outside the first through hole 1;
referring to fig. 1-4, the pre-tightening force compensation anti-loose gasket further comprises a compensation structure, the compensation structure comprises an upper gasket 2, the upper gasket 2 is provided with an outer portion of the first through hole 1, an elastic gasket 3 is fixedly connected to the outer portion of the upper gasket 2, a lower gasket 6 is arranged on the outer portion of the second through hole 7, and the elastic gasket 3 is movably connected with the lower gasket 6;
the central line of the upper gasket 2 and the central line of the lower gasket 6 are on the same vertical plane, and the diameter of the inside of the first through hole 1 is equal to that of the inside of the second through hole 7;
specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, in use, the upper gasket 2 and the elastic gasket 3 outside the upper gasket are placed on the top end of the lower gasket 6, because the thickness of the elastic gasket 3 is greater than that of the lower gasket 6, the rigidity of the elastic gasket 3 is better, when the elastic gasket is installed, a bolt passes through the first through hole 1 and the second through hole 7 and rotates the bolt to descend, the bolt head presses the upper gasket 2 downwards, the upper gasket 2 drives the elastic gasket 3 to descend, so that the elastic gasket 3 is flattened, because the elastic gasket 3 has a variable rigidity characteristic, a very large load can be generated by small deformation, so that a pretightening force loss caused by plastic deformation or internal structure relaxation of a connecting piece can be compensated, and a pretightening force loss can be compensated.
Example 2: the locking structure 4 consists of a bottom tooth surface 401, a wedge-shaped tooth surface 402, a top tooth surface 403 and a wedge-shaped tooth socket 404, wherein the bottom tooth surface 401 is fixedly connected to the bottom end of the lower gasket 6, the wedge-shaped tooth surface 402 is fixedly connected to the top end of the lower gasket 6, the top tooth surface 403 is fixedly connected to the top end of the elastic gasket 3, the wedge-shaped tooth socket 404 is fixedly connected to the bottom end of the elastic gasket 3, and the wedge-shaped tooth socket 404 is movably connected with the wedge-shaped tooth surface 402;
the center line of the bottom tooth surface 401 and the center line of the lower pad 6 are on the same vertical plane, and the center line of the wedge-shaped tooth surface 402 and the center line of the lower pad 6 are on the same vertical plane;
the central line of the top tooth surface 403 and the central line of the elastic gasket 3 are on the same vertical plane, and the central line of the wedge-shaped tooth socket 404 and the central line of the elastic gasket 3 are on the same vertical plane;
specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, after installation, when the bolt is pre-tightened, a top tooth surface 403 on the elastic gasket 3 is wedged into a bolt head contact surface, a bottom tooth surface 401 at the bottom end of the lower gasket 6 is wedged into a connector surface, a wedge-shaped tooth groove 404 at the bottom end of the elastic gasket 3 and a wedge-shaped tooth surface 402 at the top end of the lower gasket 6 are in wedge engagement with each other, so that a self-locking function is realized, an oblique angle between the wedge-shaped tooth groove 404 and the wedge-shaped tooth surface 402 is larger than a thread lead angle of the bolt, when loosening is performed, the elastic gasket 3 and the lower gasket 6 are dislocated, a lifting distance of the elastic gasket 3 is larger than a thread lifting distance, an expansion behavior occurs in an axial direction, so that an increase of a clamping force is caused, so that the device can be effectively locked in a state of vibration, stress change, temperature alternation and the like, and the elastic gasket 3 and the lower gasket 6 can be locked to prevent self loosening.
Example 3: the positioning structure 5 consists of an arc-shaped inserting plate 501 and an arc-shaped slot 502, the arc-shaped inserting plate 501 is fixedly connected to the periphery of the bottom end of the elastic gasket 3 at equal intervals, the arc-shaped slot 502 is embedded in the periphery of the top end of the lower gasket 6 at equal intervals, and the arc-shaped inserting plate 501 is movably connected with the arc-shaped slot 502;
the length of the inside of the arc-shaped slot 502 is greater than that of the arc-shaped inserting plate 501, and the height of the arc-shaped inserting plate 501 is less than that of the inside of the arc-shaped slot 502;
specifically, as shown in fig. 1, fig. 2 and fig. 3, when installing, place elastic gasket 3 on the top of gasket 6 down, and make arc picture peg 501 insert the inside of the corresponding arc slot 502, when the bolt head pushes down and pushes up gasket 2, elastic gasket 3 takes place deformation, after elastic gasket 3 was flattened, arc picture peg 501 displacement to one side of the inside of arc slot 502, make arc picture peg 501 laminate in the inside outer side of arc slot 502, after multiunit arc picture peg 501 all laminated on the inside wall of arc slot 502, alright fix a position elastic gasket 3, realized can preventing to take place the skew between gasket 2 and the elastic gasket 3.
The working principle is as follows: when the utility model is used, firstly, an upper gasket 2 and an elastic gasket 3 outside the upper gasket are placed at the top end of a lower gasket 6, and an arc-shaped inserting plate 501 is inserted into the corresponding arc-shaped slot 502, because the thickness of the elastic gasket 3 is larger than that of the lower gasket 6, the rigidity of the elastic gasket is better, when the elastic gasket is installed, a bolt passes through a first through hole 1 and a second through hole 7, and rotates the bolt to descend, the bolt head presses the upper gasket 2 downwards, the upper gasket 2 drives the elastic gasket 3 to descend to flatten the elastic gasket 3, at the moment, a top tooth surface 403 on the elastic gasket 3 is wedged into a bolt head contact surface, a bottom tooth surface 401 at the bottom end of the lower gasket 6 is wedged into a connecting piece surface, a wedge-shaped tooth groove 404 at the bottom end of the elastic gasket 3 is wedged and a wedge-shaped tooth surface 402 at the top end of the lower gasket 6 are engaged with each other, a self-locking function is realized, and the arc-shaped inserting plate 501 is displaced to one side of the inside the arc-shaped slot 502, the arc-shaped inserting plates 501 are attached to the outer side of the inner part of the arc-shaped slot 502, when a plurality of groups of arc-shaped inserting plates 501 are attached to the inner side wall of the arc-shaped slot 502, the elastic gasket 3 can be positioned, because the elastic pad 3 has a variable stiffness characteristic, so that a very large load can be generated with a small deformation thereof, so the loss of the pretightening force caused by plastic deformation or the internal structure of the connecting piece is compensated, the loss of the pretightening force is compensated, and because the angle of inclination of the dovetail gullet 404 and the dovetail tooth face 402 is greater than the lead angle of the bolt, when taking place when pine takes off elasticity gasket 3 and lower gasket 6 dislocation, elasticity gasket 3 lifting distance is greater than the screw thread and rises to rise the distance, and the action of expanding takes place to the axial direction and then triggers the increase of clamp force, makes it can effectively lock be in the vibration, the device under the stress variation, temperature alternation etc. state.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. Pretightning force compensation locking gasket, including first through-hole (1), its characterized in that: a locking structure (4) is arranged at the top end of the first through hole (1), a second through hole (7) is arranged at the bottom end of the first through hole (1), a positioning structure (5) is arranged at the bottom end of the locking structure (4), and a compensation structure is arranged outside the first through hole (1);
the compensation structure comprises an upper gasket (2), the upper gasket (2) is provided with the outer part of the first through hole (1), the outer part of the upper gasket (2) is fixedly connected with an elastic gasket (3), the outer part of the second through hole (7) is provided with a lower gasket (6), and the elastic gasket (3) is movably connected with the lower gasket (6).
2. The pretension-compensating anti-loose gasket of claim 1, wherein: the central line of the upper gasket (2) and the central line of the lower gasket (6) are on the same vertical plane, and the diameter of the inside of the first through hole (1) is equal to that of the inside of the second through hole (7).
3. The pretension-compensating anti-loose gasket of claim 1, wherein: the locking structure (4) is composed of a bottom tooth surface (401), a wedge-shaped tooth surface (402), a top tooth surface (403) and a wedge-shaped tooth groove (404), the bottom tooth surface (401) is fixedly connected to the bottom end of a lower gasket (6), the wedge-shaped tooth surface (402) is fixedly connected to the top end of the lower gasket (6), the top tooth surface (403) is fixedly connected to the top end of an elastic gasket (3), the wedge-shaped tooth groove (404) is fixedly connected to the bottom end of the elastic gasket (3), and the wedge-shaped tooth groove (404) is movably connected with the wedge-shaped tooth surface (402).
4. The pretension-compensating anti-loose gasket of claim 3, wherein: the center line of the bottom tooth surface (401) and the center line of the lower pad (6) are on the same vertical plane, and the center line of the wedge-shaped tooth surface (402) and the center line of the lower pad (6) are on the same vertical plane.
5. The pretension-compensating anti-loose gasket of claim 3, wherein: the center line of the top tooth surface (403) and the center line of the elastic gasket (3) are on the same vertical plane, and the center line of the wedge-shaped tooth groove (404) and the center line of the elastic gasket (3) are on the same vertical plane.
6. The pretension-compensating anti-loose gasket of claim 1, wherein: location structure (5) comprise arc picture peg (501) and arc slot (502), equidistant fixed connection is around elastic gasket (3) bottom in arc picture peg (501), equidistant inlay all around on gasket (6) top down in arc slot (502), arc picture peg (501) and arc slot (502) swing joint.
7. The pretension-compensating anti-loose gasket of claim 6, wherein: the length of the inside of the arc-shaped slot (502) is larger than that of the arc-shaped inserting plate (501), and the height of the arc-shaped inserting plate (501) is smaller than that of the inside of the arc-shaped slot (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578031.0U CN215634315U (en) | 2021-03-22 | 2021-03-22 | Pretightening force compensation anti-loose gasket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578031.0U CN215634315U (en) | 2021-03-22 | 2021-03-22 | Pretightening force compensation anti-loose gasket |
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| Publication Number | Publication Date |
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| CN215634315U true CN215634315U (en) | 2022-01-25 |
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| CN202120578031.0U Active CN215634315U (en) | 2021-03-22 | 2021-03-22 | Pretightening force compensation anti-loose gasket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705326A (en) * | 2022-04-22 | 2022-07-05 | 中国工程物理研究院总体工程研究所 | Pretightening force adjusting method of flexible auxiliary supporting structure |
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2021
- 2021-03-22 CN CN202120578031.0U patent/CN215634315U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705326A (en) * | 2022-04-22 | 2022-07-05 | 中国工程物理研究院总体工程研究所 | Pretightening force adjusting method of flexible auxiliary supporting structure |
| CN114705326B (en) * | 2022-04-22 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | Pretightening force adjusting method of flexible auxiliary supporting structure |
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