CN203908429U - Protractor used for high strength bolt rotation angle method inspection - Google Patents
Protractor used for high strength bolt rotation angle method inspection Download PDFInfo
- Publication number
- CN203908429U CN203908429U CN201420190863.5U CN201420190863U CN203908429U CN 203908429 U CN203908429 U CN 203908429U CN 201420190863 U CN201420190863 U CN 201420190863U CN 203908429 U CN203908429 U CN 203908429U
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- strength bolt
- scale mark
- protractor
- angle measuring
- regular hexagon
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000007689 inspection Methods 0.000 title abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 241000668842 Lepidosaphes gloverii Species 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 25
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A protractor used for high strength bolt rotation angle method inspection relates to the bridge high strength bolt construction field, and comprises a circular body, a regular hexagon through hole is arranged in the center of the body, and an angle measurement calibrated dial is arranged along the outer edge of the regular hexagon through hole. The measurement range of the angle measurement calibrated dial is between 0-degree to 360-degree, and one corner of the regular hexagon through hole corresponds to the 0-degree of the angle measurement calibrated dial The protractor is simple in structure, is easy to process, can be used as a simple tool of the high strength bolt rotation angle method inspection in the bridge steel structure construction, can monitor the high strength bolt torque method construction case by marking simply at construction, improves and guarantees the construction quality, can inspect the bolts rapidly and one by one after the high strength bolts are screwed finally, and enables the construction period to be shortened and the cost to be reduced.
Description
Technical field
The utility model relates to bridge high-strength bolt construction field, is specifically a kind of protractor checking for high-strength bolt corner method.
Background technology
In Modern Bridge Engineering, high-strength bolt, as main steel structure connection mode, directly has influence on the safe operation of bridge.The Major Diseases that bridge high-strength bolt connects has delayed fracture, loosening (containing slippage) and three aspects of corrosion, and the axle power control of these diseases during all with construction is relevant.Therefore, for ensureing that high-strength bolt fastener shaft power meets design requirement, be necessary high-strength bolt to carry out twisting end quality check after construction, anti-leak-stopping is twisted, is owed to twist and be super stubborn.
Mostly adopt calibrated wrench method for the method for high-strength bolt construction at present, utilize fastener shaft power, the torque coefficient of design to calculate construction moment of torsion.The method of inspection after construction mainly contains calibrated wrench method and corner method.Calibrated wrench method release method and the method that links closely, such as first the method for releasing for drawing a fine rule on nut and steel plate, then nut is unclamped to certain angle (30～60 °), then with checking that spanner is again screwed onto fine rule and overlaps, if it is qualified to check that moment of torsion is between the construction moment of torsion of 0.9～1.1 times.Calibrated wrench method need to use wrest fixing spanner or electric wrench while inspection.But the high-strength bolt using in a bridge block has hundreds of thousands to be set to millions of covers, calibrated wrench method is comparatively time-consuming, can not check one by one, and the stability of torque coefficient is depended in calibrated wrench method inspection accuracy.And torque coefficient affected by the factor such as temperature, humidity very large, this also makes the accuracy of calibrated wrench method inspection greatly reduce, the scope of application is restricted.
The inspection of protractor corner method is the angle value that high-strength bolt rotates relative to bolt from being just screwed to whole nutting, obtains the statistical parameter of this angle by laboratory test, then utilizes this angle to check condition of construction.Corner method has advantages of that calibrated wrench method does not possess, and the method is not subject to the impact of temperature, humidity and torque coefficient discreteness, is applicable to any occasion, the space that especially electric wrench cannot arrive; And if the construction with corner method monitoring calibrated wrench method in when construction, this can improve the construction quality of high-strength bolt undoubtedly.But general protractor is not suitable for the inspection for high-strength bolt rotational angle, measure the relative rotation of screw bolt and nut as being used for, applicability is poor, and observation angle inconvenience, causes efficiency lower.
Utility model content
For the defect existing in prior art, the purpose of this utility model is to provide a kind of protractor checking for high-strength bolt corner method, can conveniently read the angle that relatively rotates of nuts and bolt, and can after construction, promptly check one by one that high-strength bolt executes stubborn situation.
For reaching above object, the technical scheme that the utility model is taked is: a kind of protractor checking for high-strength bolt corner method, comprise circular body, centre position on described body is provided with regular hexagon through hole, be provided with angle measuring calibration dish along the outer rim of described regular hexagon through hole, the measurement range of described angle measuring calibration dish be 0～360 degree, described regular hexagon through hole wherein one jiao with 0 on angle measuring calibration dish spend corresponding.
On the basis of technique scheme, described angle measuring calibration dish is provided with scale mark, and described scale mark comprises long scale mark, middle scale mark, short scale mark, and described short scale mark length is less than middle scale mark length, and described middle scale mark length is less than long scale mark length.
On the basis of technique scheme, described angle measuring calibration dish is provided with scale value, and the mantissa of described scale value meets 0, corresponding with long scale mark; The mantissa of described scale value meets 5, corresponding with middle scale mark; The mantissa of described scale value meets 1,2,3,4,6,7,8,9, corresponding with short scale mark.
On the basis of technique scheme, the long scale mark place on described angle measuring calibration dish, mark has corresponding numeral.
On the basis of technique scheme, described regular hexagon through hole opposite side size is than the large 0～1mm of nut opposite side size of high-strength bolt to be measured; Described regular hexagon through hole diagonal-size is than the large 0～1mm of nut diagonal-size of high-strength bolt to be measured.
On the basis of technique scheme, the wall thickness of described body is 0.7～1.5mm.
On the basis of technique scheme, the diameter of described body is than the large 28～32mm of the circumscribed circle diameter of regular hexagon through hole, the external diameter of described angle measuring calibration dish is identical with the diameter of body, and the internal diameter of described angle measuring calibration dish is than the little 8～12mm of the external diameter of described angle measuring calibration dish.
On the basis of technique scheme, described body adopts metal material to make.
The beneficial effects of the utility model are:
1,, because the body of this protractor is provided with regular hexagon through hole, therefore this protractor can directly be nested on the nut of high-strength bolt, by simple operations, and the relative rotation of screw bolt and nut just can obtain high-strength bolt and twist eventually from being just screwed to time.
2, this protractor can be monitored the high-strength bolt of calibrated wrench method construction, ensures and has improved construction quality.
3, after construction completes, can utilize the mark of doing in construction, check fast, seriatim the stubborn situation of executing of high-strength bolt, improve work efficiency, reduce check cost.
4, this angle gage structure is simple, is easy to production and processing and cost is lower.
Brief description of the drawings
Fig. 1 is the schematic diagram for the protractor of high-strength bolt corner method inspection.
Reference numeral:
1-body; 2-regular hexagon through hole; 3-angle measuring calibration dish.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of protractor checking for high-strength bolt corner method, comprises circular body 1, and the wall thickness of described body 1 is 0.7mm, adopts stainless steel to make; The center of described body 1 is provided with regular hexagon through hole 2, is provided with angle measuring calibration dish 3 along the outer rim of described regular hexagon through hole 2, and the measurement range of described angle measuring calibration dish 3 is 0～360 degree.One jiao of described regular hexagon through hole 2 is corresponding with 0 degree on angle measuring calibration dish 3.Described angle measuring calibration dish 3 is provided with scale mark, and described scale mark comprises long scale mark, middle scale mark, short scale mark, and described short scale mark length is less than middle scale mark length, and described middle scale mark length is less than long scale mark length.Described angle measuring calibration dish 3 is provided with scale value, and the mantissa of described scale value meets 0, corresponding with long scale mark; The mantissa of described scale value meets 5, corresponding with middle scale mark; The mantissa of described scale value meets 1,2,3,4,6,7,8,9, corresponding with short scale mark.Long scale mark place on described angle measuring calibration dish 3, mark has corresponding numeral.
In the present embodiment, the nut of described high-strength bolt to be measured is got the standard specification of M24, and the nut diagonal-size of high-strength bolt is 45.2mm, and the nut opposite side of high-strength bolt is of a size of 41.0mm.In circular protractor, regular hexagon through hole 2 opposite side are of a size of 41.1mm, diagonal-size is got 46.1mm.The external diameter of the diameter of body 1 and angle measuring calibration dish 3 all, than the large 30mm of nut opposite side size, is 71mm; The internal diameter of angle measuring calibration dish 3, than the little 10mm of the external diameter of angle measuring calibration dish 3, is 61mm.
Measuring method:
Measure high-strength bolt and be just screwed to the angle that while twisting eventually, nut rotates relative to bolt, before need to twisting eventually after bolt is just twisted, protractor is nested in corresponding will stubborn eventually nut on, on an angle of the corresponding nut of 0 degree scale, from the center of bolt tail to mark stroke mark straight line for this angle point.Mark straight line is divided into two sections, is drawn in the line segment on bolt tail and is drawn in the line segment on nut end face.Line segment on nut end face rotates along with tightening of high-strength bolt, after construction finishes, on line segment on bolt tail and nut, the angle of line segment is that high-strength bolt is just screwed to the angle that whole nutting rotates, the scale pointing to by mark line on bolt tail is exactly this angle of tightening rotation, can conveniently read.
Inspection scheme:
First stage is laboratory test.Utilize the feature of torque coefficient test instrument, find out bolt and be just screwed to the statistical parameter of the relative bolt rotational angle of nut while twisting eventually by simulation test, group's bolt model test means.Such as, maximal value, minimum value, mean value, standard deviation and the coefficient of variation etc.
Subordinate phase, after high-strength bolt has just been twisted, is enclosed within protractor on nut, uses marking pen to draw mark straight line from the center of bolt tail to the corresponding nut angle point of 0 degree scale.After having twisted eventually, read the relative bolt rotational angle of nut, if this angle is in test gained Statistical Area, think that construction is good, if this angle is not in test gained Statistical Area, think in the work progress of this high-strength bolt and have problems, super stubborn should the replacing of the larger genus of angle, the less genus of angle owe to twist should mend stubborn.In addition, also can only use mark stroke mark straight line, first concentrate eventually and twist, after to be onstructed completing, with protractor Quick Measurement nut corner, analyze and judgement high-strength bolt condition of construction, ensure steel structure connection safe mass.
The utility model is not only confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a utility model or akin technical scheme, all within its protection domain.
Claims (8)
1. the protractor checking for high-strength bolt corner method, comprise circular body (1), it is characterized in that: the centre position on described body (1) is provided with regular hexagon through hole (2), be provided with angle measuring calibration dish (3) along the outer rim of described regular hexagon through hole (2), the measurement range of described angle measuring calibration dish (3) be 0～360 degree, described regular hexagon through hole (2) wherein one jiao with 0 on angle measuring calibration dish (3) spend corresponding.
2. the protractor checking for high-strength bolt corner method as claimed in claim 1, it is characterized in that: described angle measuring calibration dish (3) is provided with scale mark, described scale mark comprises long scale mark, middle scale mark, short scale mark, described short scale mark length is less than middle scale mark length, and described middle scale mark length is less than long scale mark length.
3. the protractor checking for high-strength bolt corner method as claimed in claim 2, is characterized in that: described angle measuring calibration dish (3) is provided with scale value, and the mantissa of described scale value meets 0, corresponding with long scale mark; The mantissa of described scale value meets 5, corresponding with middle scale mark; The mantissa of described scale value meets 1,2,3,4,6,7,8,9, corresponding with short scale mark.
4. the protractor checking for high-strength bolt corner method as claimed in claim 3, is characterized in that: the long scale mark place on described angle measuring calibration dish (3), mark has corresponding numeral.
5. the protractor checking for high-strength bolt corner method as claimed in claim 1, is characterized in that: described regular hexagon through hole (2) opposite side size is than the large 0～1mm of nut opposite side size of high-strength bolt to be measured; Described regular hexagon through hole (2) diagonal-size is than the large 0～1mm of nut diagonal-size of high-strength bolt to be measured.
6. the protractor checking for high-strength bolt corner method as claimed in claim 1, is characterized in that: the wall thickness of described body (1) is 0.7～1.5mm.
7. the protractor checking for high-strength bolt corner method as claimed in claim 1, it is characterized in that: the diameter of described body (1) is than the large 28～32mm of circumscribed circle diameter of regular hexagon through hole (2), the external diameter of described angle measuring calibration dish (3) is identical with the diameter of body (1), and the internal diameter of described angle measuring calibration dish (3) is than the little 8～12mm of external diameter of described angle measuring calibration dish (3).
8. the protractor checking for high-strength bolt corner method as claimed in claim 1, is characterized in that: described body (1) adopts metal material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190863.5U CN203908429U (en) | 2014-04-16 | 2014-04-16 | Protractor used for high strength bolt rotation angle method inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190863.5U CN203908429U (en) | 2014-04-16 | 2014-04-16 | Protractor used for high strength bolt rotation angle method inspection |
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| Publication Number | Publication Date |
|---|---|
| CN203908429U true CN203908429U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420190863.5U Expired - Lifetime CN203908429U (en) | 2014-04-16 | 2014-04-16 | Protractor used for high strength bolt rotation angle method inspection |
Country Status (1)
| Country | Link |
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| CN (1) | CN203908429U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802123A (en) * | 2015-05-12 | 2015-07-29 | 广西玉柴机器股份有限公司 | Method for detecting tightening torque of cylinder cover bolt |
| CN105259062A (en) * | 2015-11-10 | 2016-01-20 | 李正潮 | Calibration rebound device |
| CN109404405A (en) * | 2018-11-28 | 2019-03-01 | 包头钢铁（集团）有限责任公司 | A kind of anti-bolt repetition clamp device |
-
2014
- 2014-04-16 CN CN201420190863.5U patent/CN203908429U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802123A (en) * | 2015-05-12 | 2015-07-29 | 广西玉柴机器股份有限公司 | Method for detecting tightening torque of cylinder cover bolt |
| CN105259062A (en) * | 2015-11-10 | 2016-01-20 | 李正潮 | Calibration rebound device |
| CN109404405A (en) * | 2018-11-28 | 2019-03-01 | 包头钢铁（集团）有限责任公司 | A kind of anti-bolt repetition clamp device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 103 No. 430000 Hubei Province in Qiaokou District of Wuhan city road construction Patentee after: CHINA RAILWAY BRIDGE SCIENCE RESEARCH INSTITUTE, Ltd. Patentee after: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd. Address before: 103 No. 430034 Hubei Province in Qiaokou District of Wuhan city road construction Patentee before: BRIDGE SCIENCE RESEARCH INSTITUTE LTD., CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING Group Patentee before: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
|
| CX01 | Expiry of patent term |