CN2574046Y - Elastomer for portial torsion screw friction sensor - Google Patents
Elastomer for portial torsion screw friction sensor Download PDFInfo
- Publication number
- CN2574046Y CN2574046Y CN 02279640 CN02279640U CN2574046Y CN 2574046 Y CN2574046 Y CN 2574046Y CN 02279640 CN02279640 CN 02279640 CN 02279640 U CN02279640 U CN 02279640U CN 2574046 Y CN2574046 Y CN 2574046Y
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- China
- Prior art keywords
- elastomer
- screw thread
- friction
- friction sensor
- sensor
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- Expired - Lifetime
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- 229920001971 elastomer Polymers 0.000 title abstract 5
- 239000000806 elastomer Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model belongs to the field of thread friction performance detecting, which relates to an elastomer for partial torsion screw friction sensor. The utility model is characterized in that the elastomer is provided with integration structure which is composed of a wheel spoke part and a circular cylinder part which are mutually vertical. With adopting the elastomer, the friction torque of an end surface of a bolt head screw thread pair, screw pretightening force and assembling torque can be simultaneously detected via the circular cylinder and the wheel spoke parts respectively, and meanwhile, the elastomer has the advantage of low cost. Therefore, the partial torsion screw friction sensor has the advantages of simple structure, small size, low paste positional accuracy requirements to strain gages, simple manufacture technique and low cost.
Description
Technical field: the utility model belongs to screw thread frictional behaviour detection range, relates to the elastic body of a kind of minute moment of torsion screw thread friction sensor.
Background technology; Threaded fastener is most widely used connector, and the screw thread frictional behaviour directly influences the reliability and the usability of spiral marking connection, and it is the concentrated expression of the multiple performance parameter of screw thread.Traditional detecting sensor generally can't be distinguished screw thread pair friction torque and bolt head end-face friction moment of torsion; Though some sensor can be distinguished different friction torques, when existing such as test screw thread install difficulty, to the range of size restriction that can measure screw thread too much, transducer calibration is difficult and influence defectives such as the connecting stiffness of precision, sensor measuring system is little.The generation of these problems has much relations with the elastic body of sensor.Elastic body is the critical component of strain transducer, is the key factor of decision sensor construction, performance etc.
Summary of the invention: the utility model is in order to solve problems such as transducer calibration difficulty, connecting stiffness be little, propose the elastic body of a kind of minute moment of torsion screw thread friction sensor, it is characterized in that: described elastic body is the integrative-structure that is made of orthogonal spoke part and cylindrical portions may.Adopt this elastic body, utilize respectively cylinder and spoke part simultaneously side get friction torque, bolt pretightening and the assembling moment of torsion of bolt head end face and screw thread pair; Because elastomeric cost is low; Thereby make score moment of torsion screw thread friction sensor simple in structure, volume is little, and low to the paste position accuracy requirement of foil gauge, manufacture craft is simple, and cost reduces.
Description of drawings: Fig. 1, the elastomeric structural representation front view of well-behaved moment of torsion screw thread friction sensor;
Fig. 2, the elastomeric structural representation left view of well-behaved moment of torsion screw thread friction sensor;
Fig. 3, the elastic body example structure synoptic diagram of well-behaved moment of torsion screw thread friction sensor.
Embodiment: as shown in Figure 1 and Figure 2, this minute the integrative-structure that constitutes by spoke 1, cylinder 2 two parts of moment of torsion screw thread friction sensor elastic body, wherein spoke 1 is vertical mutually with cylinder 2; The spoke 7 of spoke 1 evenly distributes, and can be two, four or a plurality of.Elastomeric two ends can be provided with to be demarcated with groove 3 and demarcation threaded hole 4, and its further groove 3 can also be other structures such as hole, four directions, and threaded hole 4 also can be other structures such as groove, four directions.The elastic body principle of work is: the friction torque that the pretightning force when measuring the screw thread installation with cylindrical portions may is different with differentiation, and different bolt mounting meanss can be distinguished screw thread pair friction torque or bolt head end-face friction moment of torsion, and the connecting stiffness of this kind structure is bigger.The cylindrical portions may two ends can connect to press turns round the demarcation load transfer device, can apply individually or simultaneously and demarcate moment of torsion and pressure, and load transfer device can be provided with sphere eccentricity removal loading functionality.Cylindrical portions may when work twisting strain is very little, needs highly sensitive foil gauge and amplifier, if the influence that is stressed the zero point of twisting strain bridge can be by the processing decoupling of electric signal, linear error equally can be by circuit and computing machine correction.Total torque when measuring the screw thread installation with spoke part.This sensor has three groups of strain bridges, and barrel is measured pretightning force respectively and distinguished friction torque for two groups, and the spoke part strain bridge is measured total torque, can export three groups of parameters simultaneously.
As shown in Figure 3, this illustrated bolt installation method can be measured total torque and bolt head end-face friction moment of torsion; If anchor stud head, rotating nut 5 can be measured the screw thread pair friction torque; If bolt 6 is oppositely installed, rotating nut 5 can be measured the nut end face friction torque, is used to measure the nut frictional behaviour.The Cross section Design of cylinder is according to being: the axial deformation under maximum pressure is about 2000 microstrains, and its length is relevant with system connection rigidity, and the maximum length that needs to consider instability condition and can survey bolt.Its diameter is relevant with the moment of torsion that needs to measure, and needs to consider the installation form of screw thread test specimen and the concrete size of jockey.The physical dimension of spoke and the wheel divergence and determining positions the has been set moment of torsion of its institute's energy measurement, the design of spoke generally need be used limited stress analysis, spoke and cylinder be connected fillet place stress maximum, design load is about 70% of a limit of elasticity, the sensitivity when the fillet of the position of paster increases, but the influence that concentrated by fluctuation of fillet physical dimension and fillet stress, near outside needing to know in the middle of spoke slightly partially simultaneously suitable one section strain dead band is arranged, should consider these factors during paster.
Sensor need connect three-channel strain amplifying regulator.Regulator is provided with load-torque coupling separation function and linear error debugging functions, and it can improve measuring accuracy, reduces the paste position accuracy requirement to foil gauge.
Three groups of parameters of sensor can be demarcated separately, the pressure of cylinder turn round can combined calibrating with decoupling, two groups of moments of torsion can be demarcated simultaneously or mutually, caliberating device can be provided with eliminates eccentrically loaded device, these functions have improved precision, timing signal is flexible.
Claims (3)
1, the elastic body of a kind of minute moment of torsion screw thread friction sensor is characterized in that: described elastic body is the integrative-structure that is made of orthogonal spoke part and cylindrical portions may.
2, as claimed in claim 1 minute moment of torsion screw thread friction sensor, it is characterized in that: described elastic body two ends are respectively equipped with calibration structure.
3, as claimed in claim 1 or 2 minute moment of torsion screw thread friction sensor, it is characterized in that: the elastomeric spoke of described radial evenly distributes, and can be two, four or a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279640 CN2574046Y (en) | 2002-10-18 | 2002-10-18 | Elastomer for portial torsion screw friction sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279640 CN2574046Y (en) | 2002-10-18 | 2002-10-18 | Elastomer for portial torsion screw friction sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2574046Y true CN2574046Y (en) | 2003-09-17 |
Family
ID=33742675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279640 Expired - Lifetime CN2574046Y (en) | 2002-10-18 | 2002-10-18 | Elastomer for portial torsion screw friction sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2574046Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156094A (en) * | 2010-02-12 | 2011-08-17 | 谢智庆 | Device and method for measuring nonskid capability of spanner and device for measuring abradability of thread part |
| CN108827633A (en) * | 2018-04-25 | 2018-11-16 | 重庆大学 | Match rolling bearing intelligent regulator device |
-
2002
- 2002-10-18 CN CN 02279640 patent/CN2574046Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156094A (en) * | 2010-02-12 | 2011-08-17 | 谢智庆 | Device and method for measuring nonskid capability of spanner and device for measuring abradability of thread part |
| CN102156094B (en) * | 2010-02-12 | 2013-06-05 | 谢智庆 | Device and method for measuring nonskid capability of spanner and device for measuring abradability of thread part |
| CN108827633A (en) * | 2018-04-25 | 2018-11-16 | 重庆大学 | Match rolling bearing intelligent regulator device |
| CN108827633B (en) * | 2018-04-25 | 2020-03-31 | 重庆大学 | Intelligent debugging device for paired rolling bearings |
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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 |
Patentee address after: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, China Patentee address before: 442000 Shiyan City, Hubei province city Zhangwan District Road No. 1 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121018 Granted publication date: 20030917 |