CN220890722U - Connecting mechanism for fastening inclined plane - Google Patents
Connecting mechanism for fastening inclined plane Download PDFInfo
- Publication number
- CN220890722U CN220890722U CN202322801394.8U CN202322801394U CN220890722U CN 220890722 U CN220890722 U CN 220890722U CN 202322801394 U CN202322801394 U CN 202322801394U CN 220890722 U CN220890722 U CN 220890722U
- Authority
- CN
- China
- Prior art keywords
- fastening
- threaded rod
- screw head
- floating
- bevel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
The utility model discloses a connecting mechanism for fastening an inclined plane, which comprises a threaded rod, a nut and a floating piece, wherein the nut is sleeved on the threaded rod; one end of the threaded rod is provided with a screw head, and the screw head is provided with a protruding part; the floating piece is provided with an installation cavity, and the floating piece is sleeved on the screw head through the installation cavity; the cavity wall of the installation cavity is provided with an arc surface which is arranged along the axial direction of the threaded rod on the surface opposite to the screw head, the cavity wall is provided with a groove which extends along the axial direction of the threaded rod, and the protruding part is clamped in the groove, so that the floating part can rotate along the extending direction of the groove between the screw heads. The screw bolt fastening device has the advantages that the screw bolt fastening device can be suitable for common screw bolt fastening without inclined planes, can meet the condition that two connected pieces have a certain inclined angle, can be used without measuring the inclined angle in advance during use, and can be suitable for more scenes.
Description
Technical Field
The utility model relates to the field of tooling, in particular to a connecting mechanism for fastening an inclined plane.
Background
The fastening nut is a fastening piece with internal threads and bolts used in a matching way, and the nut and bolt fastening is a common fastening structure in production practice, but when a connected piece takes an inclined plane as a supporting surface, and the bolts are directly used as the fastening pieces to connect the surfaces of two workpieces, the fastening bolts often need to bear additional bending load, the fastening pieces are easy to cause additional abrasion, the fastening effect of the fastening bolts on the inclined plane is difficult to be guaranteed, and looseness is easy to generate.
In the prior art, the inclined plane nut body and the inclined plane of the inclined plane washer are attached to the bolt, the inclined plane nut body is screwed, the inclined plane washer is stressed and then deflects along the inclined plane, the arc-shaped groove in the inclined plane washer is meshed with the thread of the bolt, the nut can be effectively prevented from being loosened due to the influence of external force, the inclined plane is fastened by the mode, the inclined plane washer with different specifications is required for inclined planes with different inclined angles, and the adaptability is poor in practical application.
Disclosure of utility model
The utility model provides a connecting mechanism for fastening an inclined plane, which solves the problem of poor adaptability of the prior art when the inclined plane is fastened.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the nut is sleeved on the threaded rod;
one end of the threaded rod is provided with a screw head, and the screw head is provided with a protruding part;
The floating piece is provided with an installation cavity, and the floating piece is sleeved on the screw head through the installation cavity;
The cavity wall of the installation cavity is provided with an arc surface which is arranged along the axial direction of the threaded rod on the surface opposite to the screw head, the cavity wall is provided with a groove which extends along the axial direction of the threaded rod, and the protruding part is clamped in the groove, so that the floating part can rotate along the extending direction of the groove between the screw heads.
Optionally, an inclined plane is arranged in the groove, and a friction surface is arranged on one side of the protruding part opposite to the inclined plane;
At least a portion of the friction surface abuts the ramp surface as the float member rotates relative to the screw head.
Optionally, the friction surface is a cambered surface.
Optionally, when the friction surface is abutted with the inclined surface, the friction surface is in interference fit with the inclined surface.
Optionally, the bosses are disposed on opposite sides of the screw head.
Optionally, the groove is an arc groove.
Optionally, the outline shape of the front projection of the floating piece is a regular polygon.
Optionally, one end of the screw head, which is close to the screw, is a cone.
Optionally, the width of the screw head along the radial direction of the threaded rod is greater than the radial width of the threaded rod.
Optionally, the float member has a float angle of 0-6 degrees with the screw head.
The utility model has the beneficial effects that: the floating piece is sleeved on the screw head, so that the utility model can be suitable for the condition of common bolt fastening without inclined planes, can also meet the condition that two connected pieces have a certain inclined angle, can be used without measuring the inclined angle in advance when in use, and can be suitable for more scenes.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a schematic illustration of the profile of a screw head according to an embodiment of the present utility model;
FIG. 3 is an enlarged view of a portion of the protrusion abutting the inclined surface according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a float member according to an embodiment of the present utility model;
FIG. 5 is a schematic view of an assembly with a 0 degree float angle according to an embodiment of the present utility model;
FIG. 6 is a schematic cross-sectional view of an embodiment of the present utility model with a 0 degree float angle;
FIG. 7 is an enlarged view of a portion of a floating angle of 0 degrees according to an embodiment of the present utility model;
FIG. 8 is a schematic cross-sectional view of an embodiment of the present utility model with a float angle of 6 degrees;
Fig. 9 is a partially enlarged view of a floating angle of 6 degrees according to an embodiment of the present utility model.
Names or flow names of the corresponding components represented by numbers or letters in the figures: 1. a threaded rod; 11. a screw head; 111. a boss; 1111. a friction surface; 2. a nut; 3. a floating member; 31. a floating cambered surface; 32. a groove; 321. an inclined plane; 4. a gasket; 5. a first connected member; 6. and a second connected member.
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present patent.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The fastening nut is a fastening piece with internal threads and bolts used in a matching way, and the nut and bolt fastening is a common fastening structure in production practice, but when a connected piece takes an inclined plane as a supporting surface, and the bolts are directly used as the fastening pieces to connect the surfaces of two workpieces, the fastening bolts often need to bear additional bending load, the fastening pieces are easy to cause additional abrasion, the fastening effect of the fastening bolts on the inclined plane is difficult to be guaranteed, and looseness is easy to generate.
Install on the bolt after laminating the inclined plane of inclined plane nut body and inclined plane packing ring among the prior art, screw the inclined plane nut body, take place the skew along the inclined plane after the inclined plane packing ring atress, arc groove interlock in the packing ring can prevent effectively that the nut from receiving external force to influence on the screw thread of bolt and take place not hard up, though this kind of mode has better fastening effect to the inclined plane fastening, but need the inclined plane packing ring of different specifications to different inclination inclined planes, practical application convenience is very poor, can't effectively solve temporarily to fasten under the unable clear condition of inclined plane angle among the prior art.
Example 1:
The embodiment provides a connecting mechanism for fastening inclined planes, which comprises a threaded rod 1, a nut 2 and a floating piece 3, wherein the nut 2 is sleeved on the threaded rod 1, and threads are arranged on the threaded rod 1 and are matched with the nut 2; one end of the threaded rod 1 is provided with a screw head 11, the floating piece 3 is provided with a mounting cavity, and the floating piece 3 is sleeved on the screw head 11 through the mounting cavity; the surface of the floating element 3 opposite to the threaded rod 11 is provided with a floating cambered surface 31 along the axial direction of the threaded rod 1, and the floating element 3 can float on the threaded rod 11, specifically, the above-mentioned floating is understood to be that the floating element 3 can incline at a certain angle along the axial direction of the threaded rod 1 relative to the radial direction of the threaded rod 1. The floating piece 3 is sleeved on the screw head 11 through the mounting cavity, so that the floating piece 3 can incline at a certain angle relative to the screw head 11 along the radial direction of the threaded rod 1 and relative to the axial direction of the threaded rod 1.
In the present embodiment, since the screw head 11 is provided in the installation cavity of the float 3, it is necessary to apply an external force to the screw head 11 to rotate the threaded shaft 1 in actual operation, which requires that the float 3 and the screw head 11 be capable of achieving synchronous rotation in the circumferential direction of the threaded shaft 1.
As a further description of this embodiment, the screw head 11 is provided with a boss 111, and the surface of the floating member 3 opposite to the screw head 11 is provided with a groove 32 along the axial direction of the threaded rod 1; the boss 111 is engaged in the recess 32.
Specifically, when external force is applied to the floating member 3 to rotate, since the protruding portion 111 of the screw head 11 is clamped in the groove 32 of the floating member 3, the floating member 3 drives the screw head 11 to rotate through cooperation between the groove 32 and the protruding portion 111, so as to drive the threaded rod 1 to rotate, and in turn, the effect of rotating the threaded rod 1 to attack the nut 2 through rotating the floating member 3 can be achieved.
Since in this embodiment, the purpose of rotating the threaded rod 1 is achieved by applying an external force to the floating member 3, a wrench is generally required to rotate the threaded rod 1 by using an external force, and in order to facilitate the rotation of the floating member 3 by applying an external force, the shape of the floating member 3 needs to be designed.
In this embodiment, the front projection of the floating member 3 has a regular polygon shape, and when the front projection of the floating member 3 has a regular polygon shape, a wrench can be used to rotate the floating member 3 so as to achieve the purpose of rotating the threaded rod 1 to attack the nut 2.
Preferably, the front projection of the floating member 3 in this embodiment has a regular hexagonal shape, and the wrench is most convenient when the front projection of the floating member 3 has a regular hexagonal shape. The same effect can be achieved if the floating element 3 has a square shape in the front projection. Therefore, the shape of the floating member 3 is not particularly limited here.
According to the embodiment 1, the floating piece 3 is sleeved on the screw head 11, and the floating piece 3 can incline at a certain angle along the axial direction of the threaded rod 1 relative to the radial direction of the threaded rod 1, so that the connecting mechanism for fastening the inclined plane in the embodiment can be suitable for the situation of fastening a common bolt without the inclined plane, can also meet the situation that two connected pieces have a certain inclined angle, can be used without measuring the inclined angle in advance during use, and can be suitable for more scenes.
Example 2:
The floating piece 3 is sleeved on the screw head 11, so that the screw head can be suitable for the condition of common bolt fastening without inclined planes, and the condition that two connected pieces have a certain inclined angle can be met, when the connecting mechanism for inclined plane fastening is used for connecting two conditions with the inclined angle, the nut 2 and the floating piece 3 are used for clamping the two connected pieces, and at the moment, the threaded rod 1 generates tension on the floating piece 3 through the screw head.
As a further description of this embodiment, the inclined plane 321 is disposed in the groove 32, the side of the protruding portion 111 opposite to the inclined plane 321 is provided with the friction surface 1111, the friction surface 1111 is an arc surface, when the connection mechanism for fastening the inclined plane is in a fastening state, the friction surface 1111 on the protruding portion 111 abuts against the inclined plane 321 in the groove 32, when the friction surface 1111 abuts against the inclined plane 321, the friction surface 1111 is in interference fit with the inclined plane 321, and the contact area between the protruding portion 111 and the groove 32 can be increased by the design of the friction surface 1111, so that the friction force is increased, and a better fastening effect is achieved.
In this embodiment, the protrusions 111 are on opposite sides of the screw head 11, and the grooves 32 are arc grooves so that the protrusions 111 can float in the arc grooves when not receiving the pulling force of the threaded rod 1.
When fastening is performed using the fastening mechanism for bevel fastening in the present embodiment, the floating member 3 is easily forced too hard to cause the threaded rod 1 to be tapped too deeply in order to pursue fastening of the connected member. In this embodiment, the end of the screw head 11 close to the screw is a cone, and the cone is arranged so that when the floating member 3 is excessively forced to cause the threaded rod 1 to be tapped too deeply, the connected member is easier to tap, thereby achieving a better fastening effect.
According to the common sense, the nut 2 on the threaded rod 1 may be naturally loosened, in this embodiment, the threaded rod 1 is further sleeved with the gasket 4, the gasket 4 is disposed on one side of the nut 2 close to the screw head 11, and the gasket 4 is disposed to enable the nut 2 not to be easily and naturally loosened, so that a better fastening effect can be achieved.
In the present embodiment, the washer 4 may be replaced by the nut 2, that is, by using two continuous nuts 2 for fastening, the washer 4 is not limited in detail, so long as it can achieve the technical effect of fastening the nut 2 so that it is not easy for natural loosening to occur.
As a further description of the present embodiment, when the width of the screw head 11 in the radial direction of the threaded rod 1 is larger than the width of the threaded rod 1 in the radial direction, the width of the screw head 11 in the radial direction of the threaded rod 1 is smaller than the width of the screw head 11 in the radial direction of the threaded rod 1 than the width of the screw head 1 in the radial direction can be given a larger floating space of the screw head 11 in the floating member 3, thereby realizing a larger floating angle, and thus realizing that the connection mechanism for bevel fastening can be used for two connected members of a larger inclination angle.
In this embodiment, the number of the grooves 32 is the same as that of the protrusions 111, and the protrusions 111 and the grooves 32 are in one-to-one correspondence, and the number of the protrusions 111 and the grooves 32 may be one, two, or more. Preferably, the number of the protruding parts 111 and the grooves 32 is two or more, when the floating is rotated by applying an external force, if the situation that the protruding parts 111 are stressed excessively and break occurs due to excessive force is caused, the stress situation of the protruding parts 111 can be effectively relieved by arranging two or more, the protruding parts 111 are prevented from breaking, and the quality of the connecting mechanism for fastening the inclined plane is improved.
The connecting mechanism for inclined plane fastening in the embodiment realizes better fastening effect and larger floating angle of the connecting mechanism for inclined plane fastening through further design.
Example 3:
In this embodiment 3, the hardness and strength of the threaded rod 1 should be smaller than those of the screw head 11 to ensure that the friction surface 1111 of the boss 111 is elastically deformed when the threaded rod 1 is under tension, and the friction surface is better attached to the groove inner bevel of the screw head 11 to form a wedge shape, so that the torque between the threaded rod 1 and the screw head 11 is increased, and the reaction force of the elastic deformation of the boss 111 and the friction surface 1111 on the screw is increased, so as to play a role in preventing the nut 2 from loosening.
Preferably, the top and taper of the screw head 11 and the threaded shank 1 may be heat treated differently during production to ensure that the boss 111 does not affect the overall fastening performance even if elastically deformed.
Preferably, the top and taper portions of the screw head 11 and the threaded rod 1 may be made of materials of different strength and hardness during the production process to achieve lower production costs, so as to ensure that the boss 111 does not affect the overall fastening performance even if elastically deformed.
Example 4:
In the present embodiment, there is provided a connecting mechanism for slope fastening, with which two connected members, which are a first connected member 5 and a second connected member 6, respectively, are connected, the inclination angle between the first connected member 5 and the second connected member 6 being 0 degrees.
As a further description of the present embodiment, the threaded rod 1 is tapped into the through holes of the first connected member 5 and the second connected member 6, the nut 2 is screwed in from the tail end of the threaded rod 1, the nut 2 is fixed by an external force, then an external force is applied to the floating member 3 to drive the threaded rod 1 to rotate, the threaded rod 1 is further tapped into the nut 2, the floating member 3 and the nut 2 fasten the first connected member 5 and the second connected member 6 together as the threaded rod 1 is tapped into the nut 2 further, and at this time, the floating angle of the floating member 3 relative to the screw head 11 is 0 degrees.
The present embodiment demonstrates that the connection mechanism for fastening a slope provided in the present embodiment can also be applied to a case where the connected member has a plane as a supporting surface by fastening the connected member one 5 and the connected member two 6 having an inclination angle of 0 degrees.
Example 5:
In the present embodiment, there is provided a connecting mechanism for slope fastening, with which two connected members, which are a first connected member 5 and a second connected member 6, respectively, are connected, the inclination angle between the first connected member 5 and the second connected member 6 being 6 degrees.
As a further description of the present embodiment, the threaded rod 1 is tapped into the through holes of the first connected member 5 and the second connected member 6, the nut 2 is screwed in from the tail end of the threaded rod 1, the nut 2 is fixed by an external force, then an external force is applied to the floating member 3 to drive the threaded rod 1 to rotate, the threaded rod 1 is further tapped into the nut 2, the floating member 3 and the nut 2 fasten the first connected member 5 and the second connected member 6 together as the threaded rod 1 is tapped into the nut 2 further, and at this time, the floating angle of the floating member 3 relative to the screw head 11 is 6 degrees.
The screw head 11 is arranged in the mounting cavity of the floating piece 3, so that the screw head 11 can swing in a floating way at a certain angle in the floating piece 3, the protruding part 111 is embedded in the groove 32 of the floating piece 3, and the side edge of the protruding part 111 is in key groove matching relation with the groove 32. Since the friction surface 1111 of the boss 111 and the inclined surface of the groove 32 are in contact with each other when the screw is pulled downward, friction is generated, and the nut 2 and the screw head are further restricted from rotating with each other.
The case of fastening the first and second connected members 5 and 6 having an inclination angle of 6 degrees in this embodiment demonstrates that the connection mechanism for fastening the inclined surface provided in this embodiment does not need to bear an additional bending load when the connected member has the inclined surface as a supporting surface.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if any, terms such as "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, only for convenience in describing the present utility model and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus the words describing the positional relationship in the drawings are merely for illustration and not to be construed as limiting the present patent. Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are primarily for distinguishing between different devices, elements, or components (the particular categories and configurations may be the same or different) and are not intended to indicate or imply relative importance or quantity of the devices, elements, or components indicated, but are not to be construed as indicating or implying relative importance.
In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. A connection mechanism for bevel fastening, characterized in that: the nut is sleeved on the threaded rod;
one end of the threaded rod is provided with a screw head, and the screw head is provided with a protruding part;
The floating piece is provided with an installation cavity, and the floating piece is sleeved on the screw head through the installation cavity;
The cavity wall of the installation cavity is provided with an arc surface which is arranged along the axial direction of the threaded rod on the surface opposite to the screw head, the cavity wall is provided with a groove which extends along the axial direction of the threaded rod, and the protruding part is clamped in the groove, so that the floating part can rotate along the extending direction of the groove between the screw heads.
2. The connection mechanism for bevel fastening of claim 1 wherein: an inclined plane is arranged in the groove, and a friction surface is arranged on one side of the protruding part opposite to the inclined plane;
At least a portion of the friction surface abuts the ramp surface as the float member rotates relative to the screw head.
3. The connection mechanism for bevel fastening of claim 2 wherein: the friction surface is a cambered surface.
4. A connection mechanism for bevel fastening according to claim 2 or 3, characterized in that: when the friction surface is abutted with the inclined surface, the friction surface is in interference fit with the inclined surface.
5. The connection mechanism for bevel fastening of claim 1 wherein: the bosses are disposed on opposite sides of the screw head.
6. The connection mechanism for bevel fastening of claim 1 wherein: the grooves are arc-shaped grooves.
7. The connection mechanism for bevel fastening of claim 1 wherein: the outline shape of the front projection of the floating piece is a regular polygon.
8. The connection mechanism for bevel fastening of claim 1 wherein: one end of the screw head, which is close to the screw, is a cone.
9. The connection mechanism for bevel fastening of claim 8 wherein: the width of the screw head along the radial direction of the threaded rod is larger than the radial width of the threaded rod.
10. The connection mechanism for bevel fastening of claim 1 wherein: the floating angle between the floating piece and the screw head is 0-6 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322801394.8U CN220890722U (en) | 2023-10-18 | 2023-10-18 | Connecting mechanism for fastening inclined plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322801394.8U CN220890722U (en) | 2023-10-18 | 2023-10-18 | Connecting mechanism for fastening inclined plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890722U true CN220890722U (en) | 2024-05-03 |
Family
ID=90840322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322801394.8U Active CN220890722U (en) | 2023-10-18 | 2023-10-18 | Connecting mechanism for fastening inclined plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890722U (en) |
-
2023
- 2023-10-18 CN CN202322801394.8U patent/CN220890722U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110259808B (en) | Preset check bolt assembly that moment of torsion control was dismantled | |
| EP2286097B1 (en) | Threaded fastener | |
| WO2012147207A1 (en) | Self-tapping screw | |
| US20190107141A1 (en) | Lock bolt assembly | |
| CN212177633U (en) | Anti-loosening combined bolt | |
| CN111173827A (en) | Double-thread anti-loosening structure and double-thread anti-loosening method | |
| CN209262204U (en) | A kind of gear box output end combination locking structure, heavily loaded gearbox and engineering machinery | |
| CN220890722U (en) | Connecting mechanism for fastening inclined plane | |
| CN1128195A (en) | Spanner | |
| US20240191744A1 (en) | Kind of bending bolt type anti-loosening nut | |
| CN100376811C (en) | Method of locking fastening device with screw thread and equipment | |
| CN111577742A (en) | Never-loosening self-tightening bolt washer and nut system | |
| CN215409713U (en) | Bolt with locking anti-disengaging structure | |
| CN217603122U (en) | Bolt connection anti-loosening assembly | |
| CN212838902U (en) | Self-tightening bolt and nut sleeve system | |
| CN212838893U (en) | Design type positive and negative screw opposite-jacking nut self-locking system based on dimension of fastened piece | |
| CN201671942U (en) | Locking nut | |
| CN113217521A (en) | Self-changing type lock nut | |
| CN112780657A (en) | Double-thread anti-loose bolt | |
| CN110821938A (en) | Anti-loosening fastening bolt | |
| CN215370561U (en) | Railway hump retarder braking rail self-tightening bolt anti-loosening device | |
| CN2434471Y (en) | Integrated anti-loose antitheft nut | |
| CN217761668U (en) | Prevent cracked clamp of bolt | |
| CN216519124U (en) | Self-changing type lock nut | |
| CN219795818U (en) | Anti-disassembly locking screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |