CN214404314U - Fixing device and vehicle - Google Patents
Fixing device and vehicle Download PDFInfo
- Publication number
- CN214404314U CN214404314U CN202120003121.7U CN202120003121U CN214404314U CN 214404314 U CN214404314 U CN 214404314U CN 202120003121 U CN202120003121 U CN 202120003121U CN 214404314 U CN214404314 U CN 214404314U
- Authority
- CN
- China
- Prior art keywords
- gasket
- bolt
- color
- nut
- fixing device
- 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
Images
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model provides a fixing device and vehicle, wherein, fixing device includes: the gasket is sleeved on a column body of the bolt and positioned between the head of the bolt and the nut; wherein the gasket includes a piezochromic material portion. When the connected piece is fixed, the color of the gasket can be changed under the action of the compressive stress of the head of the nut or the bolt due to the fact that the gasket comprises the piezochromic material part, wherein the different colors represent different ranges of the compressive stress borne by the gasket. The color of the gasket is the same as the color of the gasket corresponding to the preset pressure stress range, the clamping force of the bolt can be judged to meet the requirement, and the bolt tightening precision and the bolt tightening work efficiency are improved. And the clamping force of the bolt is prevented from causing failure of a mechanical structure when the clamping force does not meet the requirement, so that equipment failure and even safety accidents are avoided, and the safety is improved.
Description
Technical Field
The utility model relates to the field of automobiles, in particular to fixing device and vehicle.
Background
The bolt and nut connection has the advantages of high connection strength, strong reliability, easy disassembly and the like, so the bolt and nut connection is widely applied to the field of automobiles. When the bolt and the nut are used for fixing the connected piece, the friction coefficients of the bolt, the nut and the connected piece are different due to the difference of the material performance, the surface condition and the like of the connected piece, so that the magnitude of the clamping force generated by the bolt can not be accurately known by controlling the tightening torque, and if the clamping force cannot meet the requirement, the mechanical structure is easy to fail, equipment failure is caused, and even safety accidents occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fixing device and vehicle to solve among the prior art and can't accurately judge whether reach the requirement of the clamp force that the bolt produced, when not reaching the requirement, arouse mechanical structure inefficacy easily, cause equipment trouble, the problem of incident takes place even.
In order to achieve the above object, the present invention provides a fixing device, which comprises a bolt, a nut and a gasket, wherein the gasket is sleeved on a cylinder of the bolt and is located between a head of the bolt and the nut;
wherein the gasket comprises a piezochromic material portion.
Optionally, the thickness of the shim is between 2mm and 3 mm.
Optionally, the spacer is circular.
Optionally, a through hole is formed in the center of the gasket, and the diameter of the through hole is smaller than that of the head of the bolt;
wherein, through the through-hole, the gasket can be located on the cylinder of bolt.
Optionally, the entire shim is the piezochromic material portion.
The utility model also provides a vehicle, include as above arbitrary fixing device.
The above technical scheme of the utility model following beneficial effect has at least:
the utility model discloses fixing device is fixing by the connecting piece, because the gasket includes the piezochromic material part, works as the gasket is under the compressive stress effect of the head of nut or bolt, and the colour of gasket can change, and wherein, different colours represent the range of the compressive stress that the gasket bore is different. Through the different colors presented by the gasket, the range of the compressive stress currently born by the gasket can be determined. When the gasket shows the same color corresponding to the preset pressure stress range of the currently borne pressure stress, the pressure stress can be stopped. Through determining the colour of gasket with the colour that the gasket reached to predetermine the pressure stress scope and corresponds is the same, can judge the clamp force of bolt reaches the requirement, and then has improved the precision and the work efficiency that the bolt was screwed up. And the clamping force of the bolt is prevented from causing failure of a mechanical structure when the clamping force does not meet the requirement, so that equipment failure is caused, even safety accidents occur, and the safety is improved.
Drawings
Fig. 1 shows a schematic structural diagram of a fixing device provided by the present invention.
Description of the symbols:
1 stud 11 stud 12 stud head 2 nut 3 shim
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model discloses whether reach the requirement to the clamp force that can't accurately judge out the bolt production among the prior art, when not reaching the requirement, arouse mechanical structure inefficacy easily, cause equipment trouble, the problem of incident takes place even provides a fixing device.
As shown in fig. 1, it is a schematic view of the fixing device according to the present invention. The fixing device includes: the bolt comprises a bolt 1, a nut 2 and a gasket 3, wherein the gasket 3 is sleeved on a column body 11 of the bolt and is positioned between a head 12 of the bolt and the nut 2; wherein the shim 3 comprises a piezochromic material portion.
Alternatively, the washer 3 may be provided between the connected member and the nut 2, or between the connected member and the head 12 of the bolt.
When the connected piece is fixed, because the gasket 3 comprises the piezochromic material part, the color of the gasket 3 can be changed under the action of the compressive stress of the head 12 of the nut 2 or the bolt, wherein the different colors represent different ranges of the compressive stress born by the gasket 3. By the different colours presented by the shim 3, the range within which the shim 3 is currently subjected to compressive stresses can be determined. When the gasket 3 has the same color corresponding to the preset pressure range of the currently borne pressure, the pressure application can be stopped. Through determining that the color of the gasket 3 is the same as the color corresponding to the preset pressure stress range reached by the gasket 3, the clamping force of the bolt 1 can be judged to meet the requirement, and the screwing precision and the screwing efficiency of the bolt 1 are improved. And the clamping force of the bolt 1 is prevented from causing failure of a mechanical structure when the clamping force does not meet the requirement, so that equipment failure is caused, even safety accidents occur, and the safety is improved.
Alternatively, the relationship between the range of the compressive stress borne by the gasket 3 and the color of the gasket 3 may be, for example, when the compressive stress is greater than 0Pa and less than 0.5Pa, the color of the gasket 3 is red; when the compressive stress is greater than or equal to 0.5Pa and less than 1Pa, the color of the gasket 3 is pink; when the compressive stress is greater than or equal to 1Pa and less than 1.5Pa, the color of the gasket 3 appears blue. For example, when the compressive stress is greater than 0Pa and less than 1Pa, the color of the gasket 3 may be purple; when the compressive stress is greater than or equal to 1Pa and less than 2Pa, the color of the gasket 3 is red; when the compressive stress is greater than or equal to 2Pa and less than 3Pa, the color of the gasket 3 appears yellow. Of course, the correspondence between the range of the compressive stress borne by the gasket 3 and the color presented by the gasket 3 is not limited thereto, and will not be illustrated one by one here.
Illustratively, the thickness of the gasket 3 is between 2mm and 3mm, and the entire gasket 3 is the piezochromic material part.
The whole gasket 3 is a piezochromic material part, and when the gasket 3 bears compressive stress, the color change of the gasket 3 is easily observed. Moreover, the thickness of the gasket 3 is between 2mm and 3mm, and the excircle diameter of the gasket 3 is close to the diameter of the head 12 of the bolt or the excircle diameter of the nut 2, so that the color change of the gasket 3 in the thickness direction can be observed conveniently, and the observation is convenient.
Preferably, the gasket 3 is circular. Because the nut 2 and the head 12 of the bolt are both circular, and the gasket 3 is also circular, the matching degree with the nut 2 and the head 12 of the bolt can be improved, and the pressing force born by the gasket 3 is uniform.
Alternatively, the spacer 3 may have a square or oval shape.
Illustratively, the center of the gasket 3 is provided with a through hole, and the diameter of the through hole is smaller than that of the head 12 of the bolt; wherein, through the through-hole, gasket 3 can be located on the cylinder 11 of bolt.
In general, the outer diameter of the spacer 3 is 1 to 1.5 times, for example, 1.1 times, or 1.3 times the diameter of the through hole. The diameter of through-hole is less than the diameter of the head 12 of bolt, can prevent that gasket 3 from droing, and the excircle diameter of gasket 3 is 1 ~ 1.5 times of through-hole diameter, can increase the head 12 of bolt or the area of contact of nut 2 and gasket 3, improves the effect that compresses tightly to being connected piece.
To sum up, the utility model provides a fixing device is fixing by the connecting piece, because gasket 3 is including the piezochromic material part, works as gasket 3 is under the compressive stress effect of the head 12 of nut 2 or bolt, and the colour of gasket 3 can change, and wherein, different colours represent the range of the compressive stress that gasket 3 bore is different. By the different colours presented by the shim 3, the range within which the shim 3 is currently subjected to compressive stresses can be determined. When the gasket 3 has the same color corresponding to the preset pressure range of the currently borne pressure, the pressure application can be stopped. Through determining that the color of the gasket 3 is the same as the color corresponding to the preset pressure stress range reached by the gasket 3, the clamping force of the bolt 1 can be judged to meet the requirement, and the screwing precision and the screwing efficiency of the bolt 1 are improved. And the clamping force of the bolt 1 is prevented from causing failure of a mechanical structure when the clamping force does not meet the requirement, so that equipment failure is caused, even safety accidents occur, and the safety is improved.
In addition, when the worker screws the bolt and the nut, the bolt clamping force is conveniently and quickly detected, expensive equipment, complex operation and training cost of operators are omitted, and the cost of enterprises is reduced; the change of the bolt clamping force can be easily detected in the using process of automobiles or equipment, and only the color of the gasket is observed.
The utility model also provides a vehicle, include as above fixing device.
The vehicle adopts the fixing device, so that the competitiveness of the vehicle in the market can be improved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A fixation device, comprising:
the bolt comprises a bolt (1), a nut (2) and a gasket (3), wherein the gasket is sleeved on a column body (11) of the bolt and is positioned between a head (12) of the bolt and the nut (2);
wherein the shim (3) comprises a piezochromic material portion.
2. A fixture according to claim 1, characterised in that the thickness of the spacer (3) is between 2mm-3 mm.
3. A fixture according to claim 1, characterized in that the spacer (3) is circular.
4. A fixing device according to claim 1, characterized in that the washer (3) has a through hole opened in its centre, the diameter of said through hole being smaller than the diameter of the head (12) of the bolt;
wherein, through the through-hole, gasket (3) can be located on the cylinder (11) of bolt.
5. A fixture according to claim 1, characterised in that the entire shim (3) is part of the piezochromic material.
6. A vehicle, characterized in that it comprises a fixing device according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120003121.7U CN214404314U (en) | 2021-01-04 | 2021-01-04 | Fixing device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120003121.7U CN214404314U (en) | 2021-01-04 | 2021-01-04 | Fixing device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404314U true CN214404314U (en) | 2021-10-15 |
Family
ID=78043996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120003121.7U Active CN214404314U (en) | 2021-01-04 | 2021-01-04 | Fixing device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404314U (en) |
-
2021
- 2021-01-04 CN CN202120003121.7U patent/CN214404314U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110552946B (en) | Locking stopping bolt assembly with single nut | |
| JP2012149764A (en) | Screw | |
| CN214404314U (en) | Fixing device and vehicle | |
| CN201180371Y (en) | Steel pipe fast chucking buckle | |
| CN202883627U (en) | Screw joint device easy to disassemble and assemble | |
| CN211697235U (en) | Tensile test clamp for left-handed threaded bolt | |
| JPS5829403B2 (en) | A device that connects the connecting rod and plunger on the crank side | |
| CN210090004U (en) | Inspection frock of high-pressure oil pump and shaft coupling flange taper fit reliability | |
| CN211117077U (en) | Anti-cracking fastening assembly | |
| CN211009522U (en) | Bolt anti-loosening assembly | |
| CN209977036U (en) | Fastener convenient to dismouting | |
| CN207816736U (en) | One kind twisting de- tooling | |
| CN214135721U (en) | Torsion-adding fixing clamp | |
| CN214788473U (en) | Bolt disassembling structure | |
| CN203570221U (en) | Quick connection end plug | |
| CN206940160U (en) | A kind of novel elevator hitch plate | |
| CN210565670U (en) | Fastening connection structure for mechanical parts | |
| CN214945617U (en) | High-strength hydraulic nut | |
| CN218136234U (en) | Rudder blade hydraulic nut screwing device | |
| CN211332260U (en) | Fast-assembling clamp for shaft parts | |
| CN213711566U (en) | Double-end riveting bolt | |
| CN212838785U (en) | Self-locking nut with high fastening performance | |
| CN217712461U (en) | High-torsion-resistance anti-skid upper shackle clamp and coupling screwing machine | |
| KR200400306Y1 (en) | A pipe sealing system for a pipe pressure tester | |
| CN219284848U (en) | Clamp for detecting high-temperature mechanical property of sheet metal material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |