CN109211775A - A kind of dynamic friction coefficient measuring device - Google Patents
A kind of dynamic friction coefficient measuring device Download PDFInfo
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- CN109211775A CN109211775A CN201811050385.7A CN201811050385A CN109211775A CN 109211775 A CN109211775 A CN 109211775A CN 201811050385 A CN201811050385 A CN 201811050385A CN 109211775 A CN109211775 A CN 109211775A
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- specimen holder
- friction coefficient
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- measuring device
- dynamic friction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Abstract
A kind of dynamic friction coefficient measuring device, it is related to measuring instrument technical field, including pedestal and the lever loading device being set on the base, specimen holder device and sliding block mobile device, specimen holder device is used for clamping friction sample, lever loading device is used to apply normal force to friction sample and measures the frictional force, and sliding block mobile device is for driving a part of specimen holder device to be slided.Dynamic friction coefficient measuring device of the present invention, the dynamic friction coefficient between friction sample can be measured under conditions of different temperatures, load and Relative sliding speed are set, have the advantages that structure is simple, easy for installation, measurement accuracy is higher, provides reliable foundation specifically for agricultural product processing machinery design.
Description
Technical field
The invention belongs to measuring instrument technical fields, more particularly, to a kind of dynamic friction coefficient measuring device.
Background technique
Coefficient of friction is the ratio of the frictional force and normal pressure between two objects to contact with each other.Metal and metal, gold
Belong between the object of nonmetallic and nonmetallic equal unlike materials, in friction process by temperature, pressure, surface roughness,
The influence of the factors such as movement speed and have different coefficient of frictions, if cereal-granules are in cleaning, conveying, shelling, extruding or stone roller
Mill etc. is in process, the dynamic friction coefficient between seed and seed surface or between seed and mechanical component surface by temperature,
The variations of factors such as pressure, surface roughness and mutual sliding velocity and change.The size of coefficient of friction is directly related to friction
The size of power affects the design or selection of power-equipment, therefore measures the dynamic friction coefficient of friction sample with load, sliding speed
The non-linear change tendencies of degree, rough surface and temperature are all of great significance to engineering design, theoretical research.
The instrument of existing measurement coefficient of friction mainly has: swinging friction coefficient tester wears away instrument, PVvalue testing
Instrument etc..But the deficiencies of these instruments exist, and structure is complicated, have a single function, adaptability is not strong, measurement accuracy is poor, when measurement, do not have
Consider the influence of the external environments such as temperature Rate.Therefore, it is necessary to be improved.
Summary of the invention
The object of the present invention is to provide a kind of dynamic friction coefficient measuring devices, big to measure different sliding velocities, load
It is small and at a temperature of dynamic friction coefficient between friction sample.
To achieve the goals above, the present invention provides a kind of dynamic friction coefficient measuring device, including pedestal and setting the bottom of at
Lever loading device, specimen holder device and sliding block mobile device on seat, the specimen holder device are tried for clamping friction
Sample, the lever loading device are used to apply normal force to the friction sample and measure the frictional force, and the sliding block is mobile
Device is for driving a part of the specimen holder device to be slided.
The lever loading device includes counterweight, pressure sensor, lever, movable support and support rod, the support rod
One end be fixedly connected with the base, the other end of the support rod passes through one end of the first connector and the movable support
Hingedly, the other end of the lever and the movable support is hinged by the second connector, the central axis of first connector
With the central axis of second connector；The counterweight is located at one end of the lever, and the other end of the lever is to carry
Lotus loading end, the pressure sensor is fixed on the base, and one end of the counterweight is equipped with close to the lever.
Preferably, the distance in the load loading end to the support rod axle center is the friction sample center to the branch
The integral multiple of strut axle center distance；The distance in the friction sample center to the support rod axle center is arrived with the pressure sensor
The distance in the support rod axle center is identical.
The specimen holder device is between the movable support and the load loading end, including lower specimen holder device
With upper specimen holder device, the upper specimen holder device is set to the top of the lower specimen holder device；The upper specimen holder device
Top is fixedly linked with the lever, and the bottom of the lower specimen holder device is connected with the sliding block mobile device.
Preferably, the friction sample includes upper friction plate sample and lower friction plate sample, and the upper friction plate sample is set
In the bottom of the upper specimen holder device, the lower friction plate sample is set to the top of the lower specimen holder device.
Heater is equipped in the lower specimen holder device and/or the upper specimen holder device.
The sliding block mobile device includes motor, lead screw, sliding block and support, the screw rod and the orthogonal cloth of the lever
It sets, the output end of one end of the screw rod and the motor is drivingly connected, and the other end of the screw rod is arranged by the support
In on the pedestal, the sliding block is connect by nut with the lead screw, the top of lower the specimen holder device and the sliding block
It is fixedly connected.
Preferably, the measuring device further includes speed control, and the speed control is electrically connected with the motor, is used
In the revolving speed for controlling the motor.
Preferably, the measuring device further includes data acquisition and controller, and the data acquisition is with controller for controlling
System adjusts the heating temperature of the heater, and acquires the pressure signal of the pressure sensor, is applied to the load load
The speed controling signal of the load at end and the speed control.
The measuring device further includes display and processor, the pressure that the processor is measured according to the pressure sensor
Force value and the LOAD FOR dynamic friction coefficient for being applied to the load loading end, the display can show the pressure value,
The load and the dynamic friction coefficient.
The beneficial effects of the present invention are: can different temperatures, load and Relative sliding speed set under conditions of it is right
Dynamic friction coefficient between friction sample measures, and has the advantages that structure is simple, easy for installation, and measurement accuracy is higher,
Reliable foundation is provided specifically for agricultural product processing machinery design.
Other features and advantages of the present invention will then part of the detailed description can be specified.
Detailed description of the invention
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 shows the structural schematic diagram of the dynamic friction coefficient measuring device of exemplary embodiment of the present invention；
Fig. 2 shows the dynamic friction coefficient measuring devices of exemplary embodiment of the present invention along the cross-sectional view of lead screw axial direction；
Fig. 3 shows the top view of the dynamic friction coefficient measuring device of exemplary embodiment of the present invention；
Fig. 4 shows the broken section of support rod in the dynamic friction coefficient measuring device of exemplary embodiment of the present invention
Figure；
Fig. 5 shows the signal processing and display device of the dynamic friction coefficient measuring device of exemplary embodiment of the present invention
Schematic diagram；
Fig. 6 shows the dismantling schematic diagram of the dynamic friction coefficient measuring device of exemplary embodiment of the present invention；
Fig. 7 shows the dynamic friction coefficient between the paddy particle of exemplary embodiment of the present invention and different rubber；
Description of symbols:
1 counterweight, 2 locking nuts, 3 pressure sensors, 4 levers, 5 second connectors, 6 movable supports, 7 first connectors, 8
Support rod, 9 bolts, 10 motors, 11 motor support bases, 12 shaft couplings, 13 pins, 14 screw rods, 15 bearing blocks, 16 bearings, 17 nuts,
18 lower specimen holder devices, 19 friction samples, specimen holder device on 20,21 screws, 22 upper friction plate samples, 23 lower friction plates examinations
Sample, 24 sliding blocks, 25 thimbles, 26 fastening bolts, 27 supports, 28 linear guides, 29 linear bearings, 30 rail brackets, 31 pedestals, 32
Speed control, the acquisition of 33 data and controller, 34 processors, 35 displays.
Specific embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe preferred implementations of the invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without that should be limited by the embodiments set forth herein.Phase
Instead, these embodiments are provided so that the present invention is more thorough and complete, and can be by the scope of the present invention completely
It is communicated to those skilled in the art.
The present invention provides a kind of dynamic friction coefficient measuring device, which includes pedestal and the lever that is set on the base
Loading device, specimen holder device and sliding block mobile device, specimen holder device are used for clamping friction sample, lever loading device
For applying normal force to friction sample and measuring frictional force, sliding block mobile device is used to drive a part of specimen holder device
It is slided.The measuring device can measure the dynamic friction coefficient between friction sample, and measurement accuracy is high, and structure letter
It is single, easy for installation.
Lever loading device includes counterweight, pressure sensor, lever, movable support and support rod, one end of support rod with
Pedestal is fixedly connected, and the other end of support rod is hinged by one end of the first connector and movable support, lever and movable support
The other end by the second connector it is hinged, the central axis of the central axis of the first connector and the second connector；Counterweight position
In one end of lever, and counterweight is fixed on lever by locking nut, and the other end of lever is load loading end；
Preferably, load loading end is loaded using counterweight or pressure testing machine；
With the balance for keeping lever in zero load is reused in, the weight of counterweight can be replaced according to actual needs, be matched
The position focused on lever can be adjusted according to demand to balance when lever zero load；Pressure sensor is fixed on the base, and is leaned on
Nearly lever is equipped with one end of counterweight.
Preferably, the distance in load loading end to support rod axle center is friction sample center to the whole of support rod axle center distance
Several times；The distance in friction sample center to support rod axle center is identical at a distance from pressure sensor to support rod axle center.
Preferably, specimen holder device is between movable support and load loading end, including lower specimen holder device and upper
Specimen holder device；Upper specimen holder device is set to the top of lower specimen holder device；The top of upper specimen holder device and lever pass through spiral shell
Bolt is fixedly linked, and the bottom of lower specimen holder device is fixedly connected with sliding block mobile device.
Preferably, friction sample includes upper friction plate sample and lower friction plate sample, and upper friction plate sample is set to upper test specimen
The bottom of clamper, lower friction plate sample are set to the top of lower specimen holder device.
The material of upper friction plate sample and lower friction plate sample is metal or is nonmetallic or upper friction plate examination
Sample and lower friction plate sample one of them to be nonmetallic, another is metal, and the dynamic friction system between different objects is measured with this
Number.Upper friction plate sample and lower friction plate sample can use and metal or non-metallic particle material are sticked on plate in production
Mode.
Heater is equipped in lower specimen holder device and/or upper specimen holder device, for upper friction plate sample or lower friction
Piece sample is heated, to simulate influence of the different temperatures to the coefficient of friction of friction sample；The use of heater can basis
The demand of the material of friction sample and determine, as the dynamic friction coefficient of material be influenced by temperature it is smaller, can be without adding
Heat.
Sliding block mobile device includes motor, lead screw, sliding block and support, and screw rod and the orthogonal arrangement of lever, motor pass through
Electric machine support is fixed on the support, and one end of screw rod and the output end of motor are drivingly connected by shaft coupling, and shaft coupling passes through pin
The output axis connection respectively at screw rod and motor is followed closely, the other end of screw rod is set on pedestal by support, and sliding block passes through nut
It is connect with lead screw, nut is sleeved on lead screw, and sliding block is fixedly connected by screw with nut；
The rotation of lead screw is able to drive sliding block and moves horizontally along lead screw central axis direction, the top of lower specimen holder device and sliding block
Portion is fixedly connected.
Preferably, support is bolted on pedestal, and support is equipped with through-hole, is equipped with thimble in through-hole, thimble with
Through-hole is clearance fit, and on the same line, and thimble can be along the center of screw rod for the central axis of the central axis of thimble and screw rod
Axis direction moves horizontally, and thimble can be locked by fastening bolt；Lead screw is equipped with bearing close to shaft coupling, and bearing passes through bearing block
It is fixed on the base.
Preferably, slider bottom is also sleeved on relative in symmetrical two linear guides of screw rod, and two linear guides are equal
It is fixed on the base by rail brackets.
Preferably, be respectively provided with two linear bearings in two linear guides, each linear bearing respectively with linear guide
It is connected with sliding block.
Measuring device of the present invention further includes speed control, and speed control is electrically connected with motor, for controlling
The revolving speed of the motor.
Measuring device of the present invention further includes data acquisition and controller, and data acquisition is adjusted with controller for controlling
Save the heating temperature of heater, and the load and and speed for acquiring the pressure signal of pressure sensor, being applied to load loading end
The speed controling signal of controller.
Measuring device of the present invention further includes display and processor, the pressure that processor is measured according to pressure sensor
Force value and the LOAD FOR dynamic friction coefficient for being applied to load loading end, display can show pressure value, load and dynamic friction
Coefficient.
The method for carrying out dynamic friction coefficient measurement using measuring device of the present invention is as follows:
Upper friction plate sample and lower friction plate sample are separately fixed at upper specimen holder device and lower specimen holder by step 1
On device, adjusting counterweight makes lever keep horizontal equilibrium；
Step 2 applies load N ' in load loading end, and calculates normal force N suffered by friction sample；
Step 3, starting motor drives screw mandrel rotation, sliding block move axially under the drive of nut along screw rod, and sliding block drives
Lower specimen holder device keeps lower friction plate sample mobile and generates sliding friction to upper friction plate sample, at this point, lever is by clockwise
One end that torque makes lever have counterweight is pressed on pressure sensor, and pressure sensor is made to measure pressure value；
According to lever principle power × power arm=resistance × resistance arm, following formula can be released and calculate normal force N:
N=a*N'
In formula:
N' is the load for being applied to load loading end, and a is distance and friction sample of the load loading end to support rod axle center
Ratio of the center to support rod axle center distance.
Also according to lever principle, following formula can be released and calculate frictional force F:
F=b*F'
In formula:
F' is the pressure value that pressure sensor measures, and b is distance and friction sample of the pressure sensor to support rod axle center
Center to support rod axle center distance ratio.
According to the calculation formula of dynamic friction coefficient μ, dynamic friction coefficient is calculated:
μ=F/N
In formula:
μ is dynamic friction coefficient；
F is frictional force；
N is normal force suffered by friction sample.
Embodiment 1
Such as Fig. 1 to Fig. 6, the present invention provides a kind of dynamic friction coefficient measuring device, which includes pedestal 31 and setting
Lever loading device, specimen holder device and sliding block mobile device on pedestal 31, specimen holder device are used for clamping friction
Sample 19, lever loading device are used to apply normal force to friction sample 19 and measure frictional force, and sliding block mobile device is used for band
A part of dynamic specimen holder device is slided.
As shown in Figure 1 and Figure 4, lever loading device includes counterweight 1, pressure sensor 3, lever 4, movable support 6 and branch
One end of strut 8, support rod 8 is fixedly connected with pedestal 31, and the other end of support rod 8 passes through the first connector 7 and movable support 6
One end it is hinged, the other end of lever 4 and movable support 6 is hinged by the second connector 5, the central axis of the first connector 7 with
The central axis of second connector 5；Counterweight 1 is located at one end of lever 4, and counterweight 1 is fixed on lever 4 by locking nut 2
On, the other end of lever 4 is load loading end；
In the present embodiment, load loading end is loaded using counterweight；
Pressure sensor 3 is fixed on pedestal 31, and one end of counterweight 1 is equipped with close to lever 4.
As depicted in figs. 1 and 2, specimen holder device is between movable support 6 and load loading end, including lower test specimen folder
Holder 18 and upper specimen holder device 20, upper specimen holder device 20 are set to the top of lower specimen holder device 18；Upper specimen holder device 20
Top and lever 4 be fixedly linked by bolt 9, the bottom of lower specimen holder device 18 is fixedly connected with sliding block mobile device.
Friction sample includes upper friction plate sample 22 and lower friction plate sample 23, and upper friction plate sample 22 is pressed from both sides set on upper test specimen
The bottom of holder 20, lower friction plate sample 23 are set to the top of lower specimen holder device 18.
In embodiment, it is all provided with having heaters in lower specimen holder device 18 and upper specimen holder device 20, for upper friction
Piece sample 22 and lower friction plate sample 23 are heated, to simulate influence of the different temperatures to the coefficient of friction of friction sample 19.
As shown in Fig. 2, sliding block mobile device includes motor 10, lead screw 14, sliding block 24 and support 27, screw rod 14 and lever 4
Orthogonal arrangement, motor 10 is fixed on the support by electric machine support 11, and one end of screw rod 14 and the output end of motor 10 are logical
The drive connection of shaft coupling 12 is crossed, shaft coupling 12 passes through output axis connection of the pin 13 respectively at screw rod 14 and motor 10, screw rod 14
The other end be set on pedestal 31 by support 27, sliding block 24 is connect by nut 17 with lead screw 14, and nut 17 is sleeved on silk
On thick stick 14, sliding block 24 is fixedly connected by screw 21 with nut；
The rotation of lead screw 14 is able to drive sliding block 24 and moves horizontally along 14 central axis direction of lead screw, lower specimen holder device 18 with
The top of sliding block 24 is fixedly connected.
In the present embodiment, support 27 is bolted on pedestal 31, and support 27 is equipped with through-hole, is equipped in through-hole
Thimble 25, thimble 25 and through-hole are clearance fit, and the central axis of the central axis of thimble 25 and screw rod 14 on the same line, and pushes up
Needle 25 can be moved horizontally along the central axis direction of screw rod 14, and thimble 25 can be locked by fastening bolt 26；Lead screw 14 is close
Shaft coupling 12 is equipped with bearing 16, and bearing 16 is fixed on pedestal 31 by bearing block 15.
In the present embodiment, 24 bottom of sliding block is also sleeved on relative in 14 symmetrical two linear guides 28 of screw rod, and two
A linear guide 28 is fixed on pedestal 31 by rail brackets 30.
In the present embodiment, two linear bearings 29 are respectively provided in two linear guides 28, each linear bearing 29 is divided equally
It is not connected with linear guide 28 and sliding block 24.
As shown in figure 5, measuring device of the present invention further includes speed control 32, speed control 32 and motor 10
Electrical connection, for controlling the revolving speed of the motor 10.
Measuring device of the present invention further includes data acquisition and controller 33, and data acquisition is with controller 33 for controlling
System adjusts the heating temperature of heater, and the load and speed for acquiring the pressure signal of pressure sensor 3, being applied to load loading end
Spend the speed controling signal of controller 32.
Measuring device of the present invention further includes display 35 and processor 34, and processor 34 is according to pressure sensor 3
The pressure value measured and the LOAD FOR dynamic friction coefficient for being applied to load loading end, display 35 can show pressure value, carry
Lotus and dynamic friction coefficient.
The method for carrying out dynamic friction coefficient measurement using measuring device of the present invention is as follows:
Upper friction plate sample 22 and lower friction plate sample 23 are separately fixed at upper specimen holder device 20 and lower examination by step 1
On part clamper 18, the position for adjusting counterweight 1 makes lever 4 keep horizontal equilibrium；
Step 2 applies load N ' in load loading end, and calculates normal force N suffered by friction sample 19；
Step 3, starting motor 10 drive screw rod 14 to rotate, and sliding block 24 is under the drive of nut 17 along the axial shifting of screw rod 14
Dynamic, sliding block 24 drives lower specimen holder device 18, keeps lower friction plate sample 23 mobile and rubs to the generation sliding of upper friction plate sample 22
It wipes, at this point, lever 4 is pressed on pressure sensor 3 by one end that clockwise torque makes lever 4 have counterweight 1, makes pressure sensor 3
Measure pressure value.
In the present embodiment, the distance in load loading end to 8 axle center of support rod is 19 center of friction sample to 8 axis of support rod
2 times of heart distance；
That is normal force N=2*N' suffered by friction sample 19.
In the present embodiment, the distance and pressure sensor 3 in 19 center of friction sample to 8 axle center of support rod arrive support rod 8
The distance in axle center is identical；
That is the pressure value F' and friction that the pressure value F'=F/1 that measures of pressure sensor 3, i.e. pressure sensor 3 are measured are tried
19 friction F of sample is identical.
According to the calculation formula of dynamic friction coefficient μ, dynamic friction coefficient is calculated:
μ=F/N
In formula:
μ is dynamic friction coefficient；
F is frictional force；
N is normal force suffered by friction sample.
Embodiment 2
Measure the dynamic friction coefficient between paddy particle and rubber:
Removing friction plate sample 23 is paddy, and upper friction plate sample 22 is respectively three kinds of rubber: nitrile rubber NBR65, is gathered
Urethane rubber PU90, high wear-resistant rubber EPDM；
Paddy particle is fixed on lower friction plate sample 23 with viscose glue, temperature setting is room temperature, and motor speed is set as
50mm/min, the load N'=2Kg of load loading end load；
Five measurements of upper friction plate sample 22 and the progress of lower friction plate sample 23 to three kinds of rubber material.Fig. 7 is shown
The baseline results of dynamic friction coefficient, sampling frequency 20Hz between the relatively above-mentioned different upper friction plate sample 22 of paddy.
Table 1 lists average friction coefficient measured by the upper friction plate sample 22 that the relatively different rubber of paddy is material
And standard deviation.Obviously, the material type of rubber is different, has to the dynamic friction coefficient slid between the opposite rubber of paddy very big
It influences.Different values shows that the friction plate of unlike material holds the ability difference of paddy, by the shelling efficiency and energy consumption to paddy
Than having an impact.
Table 1
| Upper friction sample | Dynamic friction coefficient | Standard deviation |
| EPDM | 0.5 | 0.10 |
| PU90 | 1.0 | 0.05 |
| NBR65 | 1.8 | 0.10 |
Embodiment 3
Taking friction sample 19 is paddy, and paddy particle is fixed on plate as upper friction plate sample 22 and is rubbed under
Pad sample 23, can be realized under different temperatures, revolving speed and pressure to the dynamic friction coefficient between paddy particle and particle
Measurement.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.
Claims (10)
1. a kind of dynamic friction coefficient measuring device, which is characterized in that the measuring device includes pedestal (31) and is arranged in pedestal
(31) lever loading device, specimen holder device and sliding block mobile device on, the specimen holder device are used for clamping friction
Sample (19), the lever loading device are used to apply normal force to the friction sample (19) and measure the frictional force, institute
Sliding block mobile device is stated for driving a part of the specimen holder device to be slided.
2. dynamic friction coefficient measuring device according to claim 1, which is characterized in that the lever loading device includes matching
Weight (1), pressure sensor (3), lever (4), movable support (6) and support rod (8), one end of the support rod (8) with it is described
Pedestal (31) is fixedly connected, and the other end of the support rod (8) passes through the first connector (7) and the one of the movable support (6)
End is hinged, and hingedly by the second connector (5), described first connects the other end of the lever (4) and the movable support (6)
(7) central axis of the central axis of part and second connector (5)；The counterweight (1) is located at the one of the lever (4)
The other end at end, the lever (4) is load loading end, and the pressure sensor (3) is fixed on the pedestal (31), and leans on
The nearly lever (4) is equipped with the one end of the counterweight (1).
3. dynamic friction coefficient measuring device according to claim 2, which is characterized in that the load loading end to the branch
The distance in strut (8) axle center is integral multiple of the friction sample (19) center to the support rod (8) axle center distance；It is described to rub
Wipe distance and the pressure sensor (3) to the support rod (8) axle center of sample (19) center to the support rod (8) axle center
Distance it is identical.
4. dynamic friction coefficient measuring device according to claim 2, which is characterized in that the specimen holder device is located at institute
It states between movable support (6) and the load loading end, including lower specimen holder device (18) and upper specimen holder device (20), it is described
Upper specimen holder device (20) is set to the top of the lower specimen holder device (18)；The top of the upper specimen holder device (20) and institute
It states lever (4) to be fixedly linked, the bottom of the lower specimen holder device (18) is fixedly connected with the sliding block mobile device.
5. dynamic friction coefficient measuring device according to claim 4, which is characterized in that the friction sample (19) includes upper
Friction plate sample (22) and lower friction plate sample (23), the upper friction plate sample (22) are set to the upper specimen holder device (20)
Bottom, the lower friction plate sample (23) be set to the lower specimen holder device (18) top.
6. dynamic friction coefficient measuring device according to claim 4, which is characterized in that the lower specimen holder device (18)
And/or heater is equipped in the upper specimen holder device (20).
7. dynamic friction coefficient measuring device according to claim 6, which is characterized in that the sliding block mobile device includes electricity
Machine (10), lead screw (14), sliding block (24) and support (27), the screw rod (14) and the lever (4) orthogonal arrangement, it is described
One end of screw rod (14) and the output end of the motor (10) are drivingly connected, and the other end of the screw rod (14) passes through the support
(27) it is set on the pedestal (31), the sliding block (24) is connect by nut (17) with the lead screw (14), the lower examination
It is fixedly connected at the top of part clamper (18) and the sliding block (24).
8. dynamic friction coefficient measuring device according to claim 7, which is characterized in that the measuring device further includes speed
Controller (32), the speed control (32) is electrically connected with the motor (10), for controlling the revolving speed of the motor (10).
9. dynamic friction coefficient measuring device according to claim 8, which is characterized in that the measuring device further includes data
Acquisition and controller (33), the data acquisition are used to control to adjust the heating temperature of the heater with controller (33), and
Acquire the pressure signal of the pressure sensor (3), the load for being applied to the load loading end and the speed control
(32) speed controling signal.
10. dynamic friction coefficient measuring device according to claim 9, which is characterized in that the measuring device further includes showing
Show device (35) and processor (34), the pressure value that the processor (34) measures according to the pressure sensor (3) and is applied to
The LOAD FOR dynamic friction coefficient of the load loading end, the display (35) can show the pressure value, the load
With the dynamic friction coefficient.
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| CN201811050385.7A CN109211775A (en) | 2018-09-10 | 2018-09-10 | A kind of dynamic friction coefficient measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458236A (en) * | 2020-04-01 | 2020-07-28 | 中国北方车辆研究所 | Friction plate actual condition thermal fatigue load simulation test device |
| CN111693457A (en) * | 2020-06-30 | 2020-09-22 | 西南交通大学 | Automatic testing device and testing method for friction parameters of rock structural surface |
| CN112033893A (en) * | 2020-05-28 | 2020-12-04 | 北京机械设备研究所 | Friction coefficient measuring device and measuring method |
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| CN111458236B (en) * | 2020-04-01 | 2022-10-28 | 中国北方车辆研究所 | Friction plate actual condition thermal fatigue load simulation test device |
| CN112033893A (en) * | 2020-05-28 | 2020-12-04 | 北京机械设备研究所 | Friction coefficient measuring device and measuring method |
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