CN107631980A - A kind of friction coefficient measuring apparatus - Google Patents
A kind of friction coefficient measuring apparatus Download PDFInfo
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- CN107631980A CN107631980A CN201710658679.7A CN201710658679A CN107631980A CN 107631980 A CN107631980 A CN 107631980A CN 201710658679 A CN201710658679 A CN 201710658679A CN 107631980 A CN107631980 A CN 107631980A
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- test
- pulling force
- sensor
- test piece
- force sensor
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Abstract
The present invention relates to a kind of friction coefficient measuring apparatus, including measuring system and data gathering system；By setting heating pipe in test box, coefficient of friction situation of the oil apparatus under underground state can be simulated, the temperature of test box is controlled by heating pipe, pass through the atmospheric pressure in air compressor analog unit simultaneously, meet the measurement of the lower coefficient of friction of multi-state, precision is high, and efficiency is fast；When test piece a contacts with test piece b, pulling force sensor is in horizontality, and pressure sensor is in vertical state；Avoid between being connected of pulling force sensor and pressure sensor and test piece and differential seat angle be present, cause the numerical value of display to be more than the numerical value of actually applied power；Using electric cylinder, torsional forces is converted into horizontal force to test, frictional force f size, the test number stability of pulling force sensor is more preferable, and fluctuation range is small, and measurement accuracy is higher.
Description
Technical field
The present invention relates to PVvalue testing field, more particularly to a kind of friction coefficient measuring apparatus.
Background technology
Need to develop different new materials in fields such as petroleum exploration ＆ developments to adapt to various rugged environments, especially
Be interlayer under environment coefficient of friction it is relevant with temperature, its parameter calculates extremely important for thermal stress, therefore is rubbed under environment
Coefficient measuring instrument is significant to detection properties of product.At present, China is used for the instrument for measuring coefficient of friction, mostly
Coefficient of friction compared with being measured under low temperature, can only can not be being measured in the case where temperature is higher, and adopted for the measurement of coefficient of friction
Measured with μ=F/f formula, so being directly connected to coefficient of friction for the accuracy of F positive pressures value and f frictional force
Measurement size.
The measurement apparatus of coefficient of friction and measurement side under a kind of environment as described in China Patent No. 201110001235.9
Method, it is characterised in that：The top of experimental bench is provided with case, torque sensor and buncher；In case, test specimen one is fixed on
The left end of power transmission shaft, the uniform rotation under the drive of power transmission shaft；Test specimen two is fixed on the upper end of push rod, and push rod passes through experimental bench
Table top and case bottom, push rod lower end place Simple jack, Simple jack lower end placement force sensor；Power transmission shaft
Right-hand member pass through one end of first shaft coupling and torque-transmitter shaft connect；The other end of torque-transmitter shaft passes through second
Axle device is connected with the rotating shaft of buncher, and buncher controls rotating speed by speed regulator；Pressure sensor, torque sensor point
It is not connected through the first data wire, the second data wire with processor；Temperature sensor is connected with temperature acquisition instrument.
Above-mentioned patent function is single, can only can not simulate air pressure change situation in the PVvalue testing under simulation
Descend friction coefficient measurement, and the torque sensor that uses measures the size of the transmission power of buncher, stability is poor, numerical value
Fluctuation range is big, and measurement accuracy is low；Differential seat angle be present between being connected of the pressure sensor of use and test specimen, be really applied to examination
Pressure on part is slightly less than the show value of pressure sensor, and error is larger.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of friction coefficient measuring apparatus, can solve the problem that in general friction system
The problem of number measurement apparatus Work condition analogue is single, and measured value error is big.
In order to solve the above technical problems, the technical scheme is that：A kind of friction coefficient measuring apparatus, its innovative point exist
In：Including measuring system and data gathering system；
The measuring system includes support, control box, test box；The test box, control box are installed on support；The survey
Examination case includes casing, case lid, support beam, workholding jaw, guide rail and sliding block, and heating pipe is provided with the madial wall of casing；
Casing is vertically installed with a support beam along in the relative side wall in breadth direction, is provided with what is vertically driven in the support beam
Hydraulic cylinder, the output end of hydraulic cylinder are provided with pressure sensor；Pressure sensing end is clamped with test work by workholding jaw
Part a；
The test piece a is by Driven by Hydraulic Cylinder along vertical direction displacement, pressure sensor test piece a in the vertical directions
Pressure size；Connecting rod is hinged with the workholding jaw, the connecting rod is vertical with support beam, and the other end of connecting rod is hinged
There is pulling force sensor, pulling force sensor is fixedly connected with the side wall of casing, and pulling force sensor test piece a is in the horizontal direction
Pulling force size；
The inside bottom surface of the casing is provided with guide rail on along its length, the guide rail is vertical with support beam, is set on guide rail
There is the sliding block along guide rail laying direction displacement；Test piece b is clamped with the sliding block；
Electric cylinder is installed in the control box；The output end of electric cylinder is connected with sliding block, and electric cylinder driving sliding block drives test
Workpiece b is moved in the horizontal direction along guide rail, and test piece a is pressed on test piece b by Driven by Hydraulic Cylinder；
The bottom of the support is provided with roller, is easy to the transfer of whole friction coefficient measuring apparatus；
The data gathering system includes computer, and computer is connected with pressure sensor and pulling force sensor respectively, to pressure
The numerical value of sensor and pulling force sensor is acquired, digitized measurement, and precision is high, efficiency high；
Temperature sensor and baroceptor are provided with the test box；The temperature sensor passes through number with baroceptor
It is connected according to line with computer, is not only satisfied with single operating mode, also can influence of the simulated pressure change to coefficient of friction；
Described to be additionally provided with air compressor in support, the air compressor is connected by pipeline with test box, test box
Side wall on be provided with air valve, air compressor can barometric information in simulation box.
Further, when the test piece a contacts with test piece b, pulling force sensor is in horizontality, and pulling force passes
The numerical value of sensor is the numerical value f of horizontal direction power；Pressure sensor is in vertical state, and the numerical value of pressure sensor is vertical side
To the numerical value F of power；Avoid between being connected of pulling force sensor and pressure sensor and test piece and differential seat angle be present, cause
The numerical value of display is more than the numerical value of actually applied power, improves the precision of measurement.
The advantage of the invention is that：
1）By setting heating pipe in test box, coefficient of friction situation of the oil apparatus under underground state can be simulated, is led to
The temperature of heating pipe control test box is crossed, while by the atmospheric pressure in air compressor analog unit, meets multi-state
Lower coefficient of friction measurement, precision is high, and efficiency is fast.
2) when test piece a contacts with test piece b, pulling force sensor is in horizontality, the numerical value of pulling force sensor
For the numerical value f of horizontal direction power；Pressure sensor is in vertical state, and the numerical value of pressure sensor is the numerical value of vertical direction power
F；Avoid between being connected of pulling force sensor and pressure sensor and test piece and differential seat angle be present, cause the numerical value of display
More than the numerical value of actually applied power, the precision of measurement is improved.
3）Using electric cylinder, torsional forces is converted into horizontal force to test, frictional force f size, the survey of pulling force sensor
Examination numerical stability is more preferable, and fluctuation range is small, and measurement accuracy is higher.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the stereogram of friction coefficient measuring apparatus of the present invention.
Fig. 2 is the test box internal structure stereogram of friction coefficient measuring apparatus of the present invention.
Fig. 3 is that schematic isometric is assembled in the part of friction coefficient measuring apparatus of the present invention.
Fig. 4 is that schematic front view is assembled in the part of friction coefficient measuring apparatus of the present invention.
Embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
A kind of friction coefficient measuring apparatus as shown in Figures 1 to 4, including measuring system 1 and data gathering system 2.
Measuring system 1 includes support 11, control box 12, test box 13；The test box 13, control box 12 are installed in branch
On frame 11；The test box 11 includes casing 14, case lid 15, support beam 16, workholding jaw 17, guide rail 18 and sliding block 19, casing
Heating pipe 111 is provided with 14 madial wall；In casing 14 support is vertically installed with along in the relative side wall in breadth direction
Beam 16, the hydraulic cylinder 161 vertically driven is provided with the support beam 16, the output end of hydraulic cylinder 161 is provided with pressure
Sensor 162；The end of pressure sensing 162 is clamped with test piece a171 by workholding jaw 17.
Test piece a171 is driven along vertical direction displacement, the test piece a171 of pressure sensor 162 by hydraulic cylinder 161
The pressure size of in the vertical direction；Connecting rod 172 is hinged with the workholding jaw 17, the connecting rod 172 and support beam 16
Vertically, the other end of connecting rod 172 is hinged with pulling force sensor 173, and the side wall of pulling force sensor 173 and casing 14 fixes company
Connect, the pulling force sizes of the test piece a171 of pulling force sensor 173 in the horizontal direction.
The inside bottom surface of casing 14 is provided with guide rail 18 on along its length, the guide rail 18 is vertical with support beam 16, leads
The sliding block 19 along guide rail laying direction displacement is provided with rail 18；Test piece b191 is clamped with the sliding block 19.
Electric cylinder 121 is installed in control box 12；The output end of electric cylinder 121 is connected with sliding block 19, and electric cylinder 121 drives
Sliding block 19 drives test piece b191 to be moved in the horizontal direction along guide rail 18, and test piece a171 is driven by hydraulic cylinder 161
It is pressed on test piece b191.
The bottom of support 11 is provided with roller 112, is easy to the transfer of whole friction coefficient measuring apparatus.
The system of Data Collection 2 includes computer 21, computer 21 respectively with pressure sensor 162 and pulling force sensor 173
It is connected, the numerical value of pressure sensor 162 and pulling force sensor 173 is acquired, digitized measurement, precision is high, efficiency high.
Temperature sensor and baroceptor are provided with test box 13；The temperature sensor passes through with baroceptor
Data wire is connected with computer 21, is not only satisfied with single operating mode, also can influence of the simulated pressure change to coefficient of friction.
Air compressor 113 is additionally provided with support 11, the air compressor 113 passes through pipeline and the phase of test box 13
Even, it is provided with air valve in the side wall of test box 13, air compressor 113 can barometric information in simulation box.
When test piece a171 contacts with test piece b191, pulling force sensor 173 is in horizontality, pulling force sensor
173 numerical value is the numerical value f of horizontal direction power；Pressure sensor 173 is in vertical state, and the numerical value of pressure sensor 162 is
The numerical value F of vertical direction power；Avoid and deposit between being connected of pulling force sensor 173 and pressure sensor 162 and test piece
In differential seat angle, cause the numerical value of display to be more than the numerical value of actually applied power, improve the precision of measurement.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
By appended claims and its equivalent thereof.
Claims (2)
- A kind of 1. friction coefficient measuring apparatus, it is characterised in that：Including measuring system and data gathering system；The measuring system includes support, control box, test box；The test box, control box are installed on support；The survey Examination case includes casing, case lid, support beam, workholding jaw, guide rail and sliding block, and heating pipe is provided with the madial wall of casing； Casing is vertically installed with a support beam along in the relative side wall in breadth direction, is provided with what is vertically driven in the support beam Hydraulic cylinder, the output end of hydraulic cylinder are provided with pressure sensor；Pressure sensing end is clamped with test work by workholding jaw Part a；The test piece a is by Driven by Hydraulic Cylinder along vertical direction displacement, pressure sensor test piece a in the vertical directions Pressure size；Connecting rod is hinged with the workholding jaw, the connecting rod is vertical with support beam, and the other end of connecting rod is hinged There is pulling force sensor, pulling force sensor is fixedly connected with the side wall of casing, and pulling force sensor test piece a is in the horizontal direction Pulling force size；The inside bottom surface of the casing is provided with guide rail on along its length, the guide rail is vertical with support beam, is set on guide rail There is the sliding block along guide rail laying direction displacement；Test piece b is clamped with the sliding block；Electric cylinder is installed in the control box；The output end of electric cylinder is connected with sliding block, and electric cylinder driving sliding block drives test Workpiece b is moved in the horizontal direction along guide rail, and test piece a is pressed on test piece b by Driven by Hydraulic Cylinder；The bottom of the support is provided with roller；The data gathering system includes computer, and computer is connected with pressure sensor and pulling force sensor respectively, to pressure The numerical value of sensor and pulling force sensor is acquired；Temperature sensor and baroceptor are provided with the test box；The temperature sensor passes through number with baroceptor It is connected according to line with computer；Described to be additionally provided with air compressor in support, the air compressor is connected by pipeline with test box, test box Side wall on be provided with air valve, air compressor can barometric information in simulation box.
- A kind of 2. friction coefficient measuring apparatus according to claim 1, it is characterised in that：The test piece a and test When workpiece b is contacted, pulling force sensor is in horizontality, and the numerical value of pulling force sensor is the numerical value f of horizontal direction power；Pressure passes Sensor is in vertical state, and the numerical value of pressure sensor is the numerical value F of vertical direction power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658679.7A CN107631980A (en) | 2017-08-04 | 2017-08-04 | A kind of friction coefficient measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658679.7A CN107631980A (en) | 2017-08-04 | 2017-08-04 | A kind of friction coefficient measuring apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN107631980A true CN107631980A (en) | 2018-01-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710658679.7A Pending CN107631980A (en) | 2017-08-04 | 2017-08-04 | A kind of friction coefficient measuring apparatus |
Country Status (1)
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| CN (1) | CN107631980A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663314A (en) * | 2018-07-16 | 2018-10-16 | 南京理工大学 | A kind of ball screw assembly, friction coefficient testing method |
| CN109406387A (en) * | 2018-11-29 | 2019-03-01 | 深圳出入境检验检疫局工业品检测技术中心 | A kind of frictional coefficient of fiber test device |
| CN112014093A (en) * | 2020-09-03 | 2020-12-01 | 西南石油大学 | System and method for testing friction block of drilling robot |
| CN112834341A (en) * | 2020-12-31 | 2021-05-25 | 徐州云泰精密技术有限公司 | Carbon brush holder carbon brush pulling force pressure position detection device and equipment |
-
2017
- 2017-08-04 CN CN201710658679.7A patent/CN107631980A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663314A (en) * | 2018-07-16 | 2018-10-16 | 南京理工大学 | A kind of ball screw assembly, friction coefficient testing method |
| CN109406387A (en) * | 2018-11-29 | 2019-03-01 | 深圳出入境检验检疫局工业品检测技术中心 | A kind of frictional coefficient of fiber test device |
| CN112014093A (en) * | 2020-09-03 | 2020-12-01 | 西南石油大学 | System and method for testing friction block of drilling robot |
| CN112834341A (en) * | 2020-12-31 | 2021-05-25 | 徐州云泰精密技术有限公司 | Carbon brush holder carbon brush pulling force pressure position detection device and equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180126 |