CN203100972U - Pre-embedded bolt axial force sensor calibrating system - Google Patents
Pre-embedded bolt axial force sensor calibrating system Download PDFInfo
- Publication number
- CN203100972U CN203100972U CN 201320091288 CN201320091288U CN203100972U CN 203100972 U CN203100972 U CN 203100972U CN 201320091288 CN201320091288 CN 201320091288 CN 201320091288 U CN201320091288 U CN 201320091288U CN 203100972 U CN203100972 U CN 203100972U
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- bolt shaft
- shaft force
- force sensor
- power meter
- bolt
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Abstract
The utility model relates to a pre-embedded bolt axial force sensor calibrating system, comprising a bolt axial force sensor, an axial-force meter, a tensioner and a data collecting device, wherein the bolt axial force sensor passes through the axial-force meter; the front end of the bolt axial force sensor abuts against the front end face of the axial-force meter; the rear end of the bolt axial force sensor is screwed and connected with a stretching head of the tensioner through a thread; and the bolt axial force sensor and the axial-force meter are connected with the data collecting device. The strain and the axial force are simultaneously read by the data collecting device through the pre-embedded bolt axial force sensor and the axial-force meter; the strain-axial force relationship under the same time is obtained; and the problem of a mechanic performance test of a large-scale and high-strength bolt is effectively solved.
Description
Technical field
The utility model relates to parts detection technique field, particularly relates to a kind of built-in type bolt shaft force sensor caliberating system.
Background technology
At present, often use the bigger high-strength bolt of specification in wind power generating set, for example, the specification of tower tube bolt is generally more than M36.In recent years, in the accident of falling the tower of unit assembling of ship machinery process and the appearance of wind field operational process, a large amount of fan operation fault, the large-size high-tensile bolt connects the fault of improper initiation and just occupies sizable ratio.This has a strong impact on the safe in utilization of wind power equipment, and therefore, the reliability demonstration of bolt is significant and very urgent.At present, domesticly lacking corresponding product aspect the axial force test of large-size high-tensile bolt, the performance test that particularly big specification built-in type bolt shaft force transducer carries out under various environment is during test, often need bigger pulling force equipment, and existing pulling force system reform difficulty is bigger.At present, be usually used in demarcating bolt shaft force transducer method, can only measure a power-time relation and strain-time relation, can't directly draw the relation of strain-axle power.
This shows, in the prior art to the performance test apparatus and the method for testing of large-size high-tensile bolt, there are tangible deficiency and defective, demand further improvement urgently, therefore, how to found a kind of calibration system of the built-in type bolt shaft force transducer that can test the performance of large-size high-tensile bolt, one of real important topic that belongs to current research and development.
The utility model content
The technical problems to be solved in the utility model provides a kind of built-in type bolt shaft force sensor caliberating system, make its strain that can directly obtain bolt-axle power relation, under various environment, the large-size high-tensile bolt is carried out performance test more easily, thereby overcome the deficiencies in the prior art.
For solving the problems of the technologies described above, a kind of built-in type bolt shaft of the utility model force sensor caliberating system, comprise bolt shaft force transducer, axle power meter, stretcher and data acquisition equipment, wherein: the bolt shaft force transducer passes a power meter, front end offsets with the front end face of axle power meter, and the rear end screws by screw thread with the stretching head of stretcher and is connected; The bolt shaft force transducer all is connected with data acquisition equipment with axle power meter.
As further improvement, between the front end face of the front end of described bolt shaft force transducer and axle power meter, or between described axle power meter and stretcher, cushion block is installed.
Described cushion block wears the external diameter big 2-3mm of the aperture of bolt shaft force transducer than bolt shaft force transducer.
Be provided with packing ring between the front end face of the front end of described bolt shaft force transducer and cushion block or axle power meter.
Described axle power meter adopts cylinder profile shaft power meter.
The screwing length of the stretching head of described bolt shaft force transducer and stretcher is no less than 1/2 of screw thread nominal diameter.
After adopting above design, the utility model has following useful technique effect compared with the prior art:
A kind of built-in type bolt shaft of the utility model force sensor caliberating system, by built-in type bolt shaft force transducer and axle power meter, read strain and axle power simultaneously with data acquisition equipment, draw the strain-axle power relation under the same time, solved the Mechanics Performance Testing problem of large-size high-tensile bolt effectively.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Above-mentioned only is the general introduction of technical solutions of the utility model, and for can clearer understanding the utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the composition synoptic diagram of the utility model built-in type bolt shaft force sensor caliberating system.
Fig. 2 is strain-axle force curve figure that the utility model obtains.
Embodiment
See also shown in Figure 1, a kind of built-in type bolt shaft of the utility model force sensor caliberating system, comprise bolt shaft force transducer 1, axle power meter 3, stretcher 5 and data acquisition equipment, bolt shaft force transducer 1 all is connected with data acquisition equipment with the lead of axle power meter 3.In addition, the utility model also can comprise cushion block 4 and packing ring 2.
Cushion block 4 can be arranged between a power meter 3 and the stretcher 5, bolt shaft force transducer 1 passes cushion block 4 and cylinder profile shaft power meter 3, the front end face of front end and cushion block or axle power meter is fitted, and the rear end is connected with stretcher 5, and can between the front end face of bolt shaft force transducer 1 and a power meter 3 packing ring 2 be set.
In addition, also axle power meter 3 can be arranged between cushion block 4 and the stretcher 5, bolt shaft force transducer 1 passes cylinder profile shaft power meter 3 and cushion block 4, and is connected with stretcher 5, also can between bolt shaft force transducer and cushion block packing ring be set.
Wherein, cushion block 4 is a support component, can be circular cushion block, and this cushion block can be provided with the calibration system mounting bracket, and its aperture is than the big 2-3mm of external diameter of bolt shaft force transducer 1.Bolt shaft force transducer 1 and the stretching head of stretcher 5 carry out screw thread and screw and be connected, and screwing length is no less than 1/2 of screw thread nominal diameter.The cylinder profile shaft power meter that axle power meter 3 can adopt is as shown in the figure selected different ranges for use according to bolt specification, the bolt of M36 for example, and range 700kN, the bolt of M42 uses the 900kN range.Stretcher is also chosen according to the specification of tested bolt.
During use,, bring into use manual pump that stretcher 5 constantly is forced into 80% o'clock of tested bolt yield limit load and be offloaded to 0, so load, unloading three times when each parts closely after the contact.Simultaneously, the test data of the omnidistance record of data acquisition equipment bolt shaft force transducer and axle power meter, and by computer with the data formation curve.By each curve condition, can obtain the fit equation of strain-axle power, can judge simultaneously the repeatability of bolt tension and retraction three times.
Method of testing one: use manual pump that stretcher constantly is forced into 80% o'clock of bolt yield limit load and be offloaded to 0, so load, the unloading one or many.In the test process, the data equipment image data, and, draw fit equation according to the data mapping.
Method of testing two: use manual pump that stretcher constantly is forced into 50%～90% o'clock of bolt yield limit load and be offloaded to 0, so load, the unloading one or many.In the test process, the data equipment image data, and, draw fit equation according to the data mapping.
Method of testing three: use manual pump that stretcher constantly is forced into 0%～90% o'clock of bolt yield limit load and be offloaded to 0, so load, the unloading one or many.In the test process, the data equipment image data, and, draw fit equation according to the data mapping.
See also shown in Figure 2, test according to described method of testing one, in the test process, loading along with stretcher, collect one group of corresponding point set about strain and axle power, as the x coordinate, corresponding with it current axle force signal is as the mapping of y coordinate with strain signal, and heavy line is the line of measured data point.Adopt regretional analysis, simulate linear equation, and the coefficient R that characterizes the dispersion of point set and fit equation
2, R
2More near 1, show that this fit equation reflects that the error of strain-axle force function relation of real bolt shaft force transducer is more little.The strain signal that this equation is used for exporting when later stage bolt shaft force transducer is worked is scaled the axle power that bolt is subjected to.
The utility model reads strain and axle power simultaneously by data acquisition equipment, obtains strain under the same time-axle power relation, the i.e. strain of high-strength bolt-axle force curve.The axle power that records by every cover built-in type bolt shaft force transducer and the corresponding relation of strain, obtain the coincidence situation of high-strength bolt stretching and retraction and obtain the load of bolt under actual working state, thereby solved the Mechanics Performance Testing problem of large-size high-tensile bolt effectively.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in the protection domain of the present utility model.
Claims (6)
1. a built-in type bolt shaft force sensor caliberating system is characterized in that comprising bolt shaft force transducer, axle power meter, stretcher and data acquisition equipment, wherein:
The bolt shaft force transducer passes a power meter, and front end offsets with the front end face of axle power meter, and the rear end screws by screw thread with the stretching head of stretcher and is connected;
The bolt shaft force transducer all is connected with data acquisition equipment with axle power meter.
2. built-in type bolt shaft force sensor caliberating according to claim 1 system is characterized in that: between the front end face of the front end of described bolt shaft force transducer and axle power meter, or between described axle power meter and stretcher cushion block is installed.
3. built-in type bolt shaft force sensor caliberating according to claim 2 system, it is characterized in that: described cushion block wears the external diameter big 2-3mm of the aperture of bolt shaft force transducer than bolt shaft force transducer.
4. built-in type bolt shaft force sensor caliberating according to claim 2 system is characterized in that: be provided with packing ring between the front end face of the front end of described bolt shaft force transducer and cushion block or axle power meter.
5. built-in type bolt shaft force sensor caliberating according to claim 1 system is characterized in that: described axle power meter adopts cylinder profile shaft power meter.
6. built-in type bolt shaft force sensor caliberating according to claim 1 system, it is characterized in that: the screwing length of the stretching head of described bolt shaft force transducer and stretcher is no less than 1/2 of screw thread nominal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091288 CN203100972U (en) | 2013-02-28 | 2013-02-28 | Pre-embedded bolt axial force sensor calibrating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091288 CN203100972U (en) | 2013-02-28 | 2013-02-28 | Pre-embedded bolt axial force sensor calibrating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203100972U true CN203100972U (en) | 2013-07-31 |
Family
ID=48852365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320091288 Withdrawn - After Issue CN203100972U (en) | 2013-02-28 | 2013-02-28 | Pre-embedded bolt axial force sensor calibrating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203100972U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162900A (en) * | 2013-02-28 | 2013-06-19 | 国电联合动力技术有限公司 | Embedded type bolt shaft force sensor calibration system and usage method thereof |
| CN104963928A (en) * | 2015-07-22 | 2015-10-07 | 李圣用 | System for reducing wind driven generator bolt scheduled maintenance frequency |
| CN107490449A (en) * | 2016-10-13 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Bolt axially outer load measurement method, device and system |
-
2013
- 2013-02-28 CN CN 201320091288 patent/CN203100972U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162900A (en) * | 2013-02-28 | 2013-06-19 | 国电联合动力技术有限公司 | Embedded type bolt shaft force sensor calibration system and usage method thereof |
| CN103162900B (en) * | 2013-02-28 | 2015-03-11 | 国电联合动力技术有限公司 | Embedded type bolt shaft force sensor calibration system and usage method thereof |
| CN104963928A (en) * | 2015-07-22 | 2015-10-07 | 李圣用 | System for reducing wind driven generator bolt scheduled maintenance frequency |
| CN107490449A (en) * | 2016-10-13 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Bolt axially outer load measurement method, device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |