CN208721371U - Bolt and fastener comprising it - Google Patents
Bolt and fastener comprising it Download PDFInfo
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- CN208721371U CN208721371U CN201821100739.XU CN201821100739U CN208721371U CN 208721371 U CN208721371 U CN 208721371U CN 201821100739 U CN201821100739 U CN 201821100739U CN 208721371 U CN208721371 U CN 208721371U
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- bolt
- measuring rod
- bolt body
- hole
- fastener
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Abstract
The utility model discloses a kind of bolt and comprising its fastener, the bolt includes: bolt body, and the length direction on the bolt body along the bolt body offers through-hole；Measuring rod, the measuring rod are connected to the bolt body and are located in the through-hole.The fastener includes bolt as described above.The bolt of the utility model and fastener comprising it are tightening the elongation of front and back by detection bolt body, easy to operate, labor intensity is low, detection is intuitive, deviation is very small to know whether the fastening quality of bolt reaches requirement.Meanwhile it being provided convenience for maintenance, maintenance in the future.
Description
Technical field
The utility model relates to a kind of bolt and include its fastener.
Background technique
Demand with the development of national economy to electricity is increasing, therefore become must in national Future Development for Wind Power Generation Industry
Very important effect will be played.Blower is mainly made of basis, tower, cabin, this four part of blade, wherein tower and basis
Connection, the connection of tower and tower, the connection of tower and cabin, cabin and the connection of blade etc. bolt will be leaned on complete
At, and whether the connection between all parts is stable, firm, is dependent on the fastening quality of bolt, the core of fastening quality quality
The heart is exactly: whether axial force suffered by bolt reaches design requirement.
Currently, the quality of bolt fastening quality is generally detected using calibrated wrench method or stretching method, calibrated wrench method is due to being moistened
Deviation after the difference of sliding cream, the difference for smearing mode, the error of torque spanner, usual construction is bigger, causes between component
It is not connected firmly and leans on；And tensioning rule is limited to that blower interior space is smaller, and many positions cannot achieve detection, meanwhile, after tensioning
Nut is simultaneously tightly affected by human factors larger.
Utility model content
The technical problems to be solved in the utility model is to overcome the detection in the prior art to bolt fastening quality
It is bigger that there are deviations, cause to be not connected firmly by the defects of, a kind of bolt and the fastener comprising it are provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of bolt, it is characterized in that comprising:
Bolt body, the length direction on the bolt body along the bolt body offer through-hole；
Measuring rod, the measuring rod are connected to the bolt body and are located in the through-hole.
In the present solution, form using the above structure, by detection bolt body in the elongation for tightening front and back, so as to
Know whether the fastening quality of bolt reaches requirement, it is easy to operate, labor intensity is low, detection is intuitive, deviation is very small.Meanwhile being
Maintenance, maintenance in the future provides convenience.
Preferably, the bolt body includes bolt head and screw rod interconnected, the measuring rod is connected to the spiral shell
Bolt head.
In the present solution, form using the above structure, ensure that the accuracy of measurement, deviation is very small, improves fastening
The security reliability of part.
Preferably, the measuring rod includes external thread part and bar portion, the inner wall of the bolt head is equipped with internal thread part, institute
It states external thread part and is connected to the internal thread part, the bar portion is located in the through-hole and is connected to the external thread part.
In the present solution, form using the above structure, easy to connect, and structure is simple.
Preferably, the axis of the through-hole and the axis of the bolt body coincide.
Preferably, the end of the measuring rod is inserted into the through-hole, and the end of the measuring rod do not extend it is described
The end face of bolt body.
Preferably, the end of the measuring rod passes through the through-hole and extends the end face of the bolt body.
Preferably, the outer surface of the measuring rod has Measurement scales.
In the present solution, form using the above structure, can be detected very square by Measurement scales with people's naked eyes visual inspection
Just, it is low to greatly reduce labor intensity, improves detection efficiency, meanwhile, it is provided convenience for maintenance, maintenance in the future.
A kind of fastener, it is characterized in that comprising there is bolt as described above.
In the present solution, form using the above structure, detect easy to operate, labor intensity is low, detection is intuitive, deviation very
It is small.Meanwhile it being provided convenience for maintenance, maintenance in the future.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get the utility model respectively compared with
Good example.
The positive effect of the utility model is:
The bolt of the utility model and fastener comprising it, by detection bolt body in the elongation for tightening front and back,
Whether the fastening quality of bolt reaches requirement to known to, easy to operate, labor intensity is low, detection is intuitive, deviation is very small.Together
When, it is provided convenience for maintenance, maintenance in the future.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bolt of the fastener of the utility model embodiment 1.
Fig. 2 is schematic cross-sectional view of the Fig. 1 along the direction A-A.
Fig. 3 is the structural schematic diagram of the measuring rod of the bolt of the fastener of the utility model embodiment 1.
Fig. 4 is the use state diagram of the fastener of the utility model embodiment 1.
Fig. 5 is the schematic diagram of internal structure of the bolt of the fastener of the utility model embodiment 2.
Fig. 6 is the structural schematic diagram of the measuring rod of the bolt of the fastener of the utility model embodiment 2.
Description of symbols:
Bolt body 1
Bolt head 11
Screw rod 12
Through-hole 13
Measuring rod 2
External thread part 21
Bar portion 22
Measurement scales 23
Bolt 10
Nut 20
Connecting component 30
Axial difference H1 before installing
Axial difference H2 after installation
Specific embodiment
Illustrate below by the mode of embodiment and completely the utility model in conjunction with attached drawing to become apparent from, but not therefore
Among the scope of embodiments that the utility model is limited in.
In the description of the present invention, it should be understood that the orientation or positional relationship of the instructions such as term "left", "right"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations of the present invention.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the fastener of the present embodiment includes bolt 10.The bolt 10 includes bolt sheet
Body 1 and measuring rod 2, the length direction on bolt body 1 along bolt body 1 offer through-hole 13, and measuring rod 2 is connected to bolt sheet
Body 1 is simultaneously located in through-hole 13.Through-hole 13 runs through bolt body 1 along the axial direction of bolt body 1 from left to right, measuring rod 2 from
Deeply in through-hole 13 and bolt body 1 is connected to, the right end of measuring rod 2 is inserted into through-hole 13 along the axial direction of bolt body 1
And it is located in through-hole 13.Bolt 10 before the mounting, first measures axial difference H1 before installation, axial difference H1 is before the installation
The distance between the right side of the right side of measuring rod 2 and bolt body 1 before bolt 10 is installed.Bolt 10 passes through connecting component
30, and nut 20 is threaded on bolt 10 by the right end of bolt 10, then installation terminates bolt 10, then measures peace
Axial difference H2 after dress, axial difference H2 is the right side of measuring rod 2 and the right end of bolt body 1 after bolt 10 is installed after installation
The distance between face.The conduct of bolt body 1 is tension member, and bolt body 1 can generate certain elongation afterwards in a pre-installation, after installation
Difference between axial difference H2 and the preceding axial difference H1 of installation means that the elongation of the bolt body 1, passes through and detects bolt
Ontology 1 is in the elongation for tightening front and back, and just whether the fastening quality of bolt 10 to known to reaches requirement, easy to operate, labour
Intensity is low, detection is intuitive, and deviation of the bolt 10 after fastening by axle power can control ± 2%, and deviation is very small.Meanwhile
It is provided convenience for maintenance, maintenance in the future.
The bolt 10 that same material heat (batch) number, same production technology, same heat treatment heat (batch) number are produced is known as with batch bolt,
Its performance is almost the same.When same batch bolt is by same pulling force, elongation is also consistent.Before batch is installed, elder generation is only needed
Primary test is done to bolt 10 on testing machine: bolt 10 being drawn to design axle power, the right side of measuring rod 2 is measured by measuring scale
Axial difference H1 and installation before installation are measured in the axial difference before and after by pulling force in end face and the right side of bolt body 1
Axial difference H2 afterwards, the difference after installing preceding axial difference H1 and installing between axial difference H2 are exactly the elongation of bolt body 1
Amount.With batch bolt after batch installation terminates, as long as by measuring scale come the right side of measuring rod 2 and bolt body
Whether the elongation of the bolt body 1 of the difference and preinstallation of front and back is consistent between 1 right side, that is, installation
The difference of front and back is exactly after installing preceding axial difference H1 and installation between the right side of measuring rod 2 and the right side of bolt body 1
Difference between axial difference H2, whether the difference consistent with the elongation of the bolt body 1 of test, thus to judge spiral shell
Whether the installation of bolt 10 reaches the requirement of design.Certainly, since same batch bolt performance, size are consistent, bolt 10 is applied in installation
After work terminates, axial difference H1 before measurement is installed is not needed, it is only necessary to measure axial difference H2 after installation, the installation rear axle
It is whether consistent to the axial difference of difference H2 and the bolt of test 10 after by pulling force, to can also judge the peace of bolt 10
Whether dress reaches the requirement of design.
Bolt 10 usually requires that periodic inspection, maintenance, in maintenance, as long as also measuring this spiral shell after installation
Whether axial difference H2 changes after the installation of bolt 10, is just easy for measure whether bolt 10 loosens, if it needs to twist again,
As long as and amount stubborn again also reaches axial difference H2 after original installation.
Bolt 10 needs bolt body 1 to have elongation when by axial force, and measuring rod 2 absolutely cannot be by
Power stretches, in order to reach measuring rod 2 not by the active force of axial direction.Bolt body 1 may include bolt head interconnected
11 and screw rod 12, measuring rod 2 be connected to bolt head 11.The left end of screw rod 12 is connected to bolt head 11, the right end and spiral shell of screw rod 12
Mother 20 is threadedly coupled, and in installation, screw rod 12 is threadedly coupled bolt 10 with nut 20, so that 12 stress of screw rod and stretch,
And bolt head 11 intensity is high, and bolt head 11 is tight against connecting component 30 so that bolt head 11 in a pre-installation after all will not
There are phenomenon is elongated, measuring rod 2 is connected on the bolt head 11 of bolt body 1, between having between measuring rod 2 and screw rod 12
Gap, the accuracy that axial difference H2 is measured after ensure that axial difference H1 before installing and installing, deviation is very small, improves fastening
The security reliability of part.
Measuring rod 2 may include external thread part 21 and bar portion 22, and the inner wall of bolt head 11 is equipped with internal thread part, external screw thread
Portion 21 is connected to internal thread part, and bar portion 22 is located in through-hole 13 and is connected to external thread part 21.The left end of bar portion 22 is connected to outer
The right end of threaded portion 21, bar portion 22 extends along the direction of through-hole 13, has gap between bar portion 22 and screw rod 12, and measuring rod 2 is logical
External thread part 21 is crossed to be connected with the internal thread part of bolt head 11, it is easy to connect, and structure is simple.
The axis of through-hole 13 and the axis of bolt body 1 coincide, 13 convenience of processing and fabricating through-hole on bolt 10.
In the end insertion through-hole 13 of measuring rod 2, and the end of measuring rod 2 does not extend the end face of bolt body 1.Measurement
The left end of bar 2 is connected with bolt body 1, and the right end of measuring rod 2 extends not in through-hole 13 along the axial direction of through-hole 13
The right side for extending bolt body 1 can be inserted into through-hole 13 when measuring end face difference by measuring scale, measurement operation
Simplicity, labor intensity is low, and detection is intuitive.Meanwhile it can also be inserted into through-hole 13 by measuring scale in maintenance, maintenance in the future
It can measure, greatly facilitate maintenance and maintenance.
Embodiment 2
As shown in Figure 5 and Figure 6, the fastener constructions of the present embodiment and the same section of embodiment 1 are no longer repeated, only to not
It is explained with place.The end of measuring rod 2 passes through through-hole and extends the end face of bolt body 1.The left end of measuring rod 2 passes through outer
Threaded portion 21 is connected with the bolt head 11 of bolt body 1, and the right end of measuring rod 2 passes through through-hole and extends bolt body 1
Right side, will be very convenient at a distance from the right side of measurement measuring rod 2 is between the right side of bolt body 1.
The outer surface of measuring rod 2 has Measurement scales 23.It can be detected non-with people's naked eyes visual inspection by Measurement scales 23
Often conveniently, it is low to greatly reduce labor intensity, improves detection efficiency, meanwhile, it is provided convenience for maintenance, maintenance in the future.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the protection scope of the utility model.
Claims (8)
1. a kind of bolt, characterized in that it comprises:
Bolt body, the length direction on the bolt body along the bolt body offer through-hole, and the through-hole is described in
The axial direction of bolt body runs through the bolt body；
Measuring rod, the measuring rod are connected to the bolt body and are located in the through-hole.
2. bolt as described in claim 1, which is characterized in that the bolt body includes bolt head and spiral shell interconnected
Bar, the measuring rod are connected to the bolt head.
3. bolt as claimed in claim 2, which is characterized in that the measuring rod includes external thread part and bar portion, the bolt
The inner wall of head is equipped with internal thread part, and the external thread part is connected to the internal thread part, and the bar portion is located in the through-hole
And it is connected to the external thread part.
4. bolt as described in claim 1, which is characterized in that the axis of the through-hole is mutually be overlapped with the axis of the bolt body
It closes.
5. the bolt as described in any one of claim 1-4, which is characterized in that the end insertion of the measuring rod is described logical
In hole, and the end of the measuring rod does not extend the end face of the bolt body.
6. the bolt as described in any one of claim 1-4, which is characterized in that the end of the measuring rod passes through described logical
Hole and the end face for extending the bolt body.
7. bolt as claimed in claim 6, which is characterized in that the outer surface of the measuring rod has Measurement scales.
8. a kind of fastener, which is characterized in that it includes just like bolt described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821100739.XU CN208721371U (en) | 2018-07-12 | 2018-07-12 | Bolt and fastener comprising it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821100739.XU CN208721371U (en) | 2018-07-12 | 2018-07-12 | Bolt and fastener comprising it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721371U true CN208721371U (en) | 2019-04-09 |
Family
ID=65973286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821100739.XU Active CN208721371U (en) | 2018-07-12 | 2018-07-12 | Bolt and fastener comprising it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208721371U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285913A (en) * | 2019-07-19 | 2019-09-27 | 青岛四方庞巴迪铁路运输设备有限公司 | Bolt capable of detecting axial force of bolt and detection method thereof |
| CN113673048A (en) * | 2021-08-04 | 2021-11-19 | 一汽解放汽车有限公司 | Bolt and design method thereof |
-
2018
- 2018-07-12 CN CN201821100739.XU patent/CN208721371U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285913A (en) * | 2019-07-19 | 2019-09-27 | 青岛四方庞巴迪铁路运输设备有限公司 | Bolt capable of detecting axial force of bolt and detection method thereof |
| CN113673048A (en) * | 2021-08-04 | 2021-11-19 | 一汽解放汽车有限公司 | Bolt and design method thereof |
| CN113673048B (en) * | 2021-08-04 | 2024-04-09 | 一汽解放汽车有限公司 | Bolt Design Method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |