CN105928869B - Drum type brake static friction and coefficient of sliding friction test platform - Google Patents
Drum type brake static friction and coefficient of sliding friction test platform Download PDFInfo
- Publication number
- CN105928869B CN105928869B CN201610194417.5A CN201610194417A CN105928869B CN 105928869 B CN105928869 B CN 105928869B CN 201610194417 A CN201610194417 A CN 201610194417A CN 105928869 B CN105928869 B CN 105928869B
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- roller
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- light pen
- driving gear
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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
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- Automation & Control Theory (AREA)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
Drum type brake static friction and coefficient of sliding friction test platform belong to physical object performance detection apparatus；Cylindricality horizontal ball, holder and horizontal scale ruler are installed on rack, installation carries handle, the Handle axis of driving gear and the jackshaft with intermediate gear on holder, also installation carries the drum shaft of roller, driving gear sum aggregate light pen A, B on rack, horizontal gap is opened up on roller downside wall, the plane wall-like of the linear vertical direction configuration in position above the side of the horizontal gap of roller, light level timer, roller graduated scale and pressure switch are mounted on roller vertical direction planar wall, and pressure switch is connected to by conducting wire with light level timer；This platform not only can measure confficient of static friction, but also can be used for measuring the coefficient of sliding friction, have the characteristics that it is compact-sized, operate simple and convenient, be high certainty of measurement, applied widely.
Description
Technical field
The invention belongs to physical object performance test apparatus, relate generally to test order hardware particle object on plate
Static friction and the coefficient of sliding friction.
Background technology
Static friction and sliding friction measurement are widely used in communications and transportation and mechanical processing industry.In the emulation of object mechanics
In research, the accuracy of static friction and the coefficient of sliding friction plays the role of vital.High-precision static friction and sliding
Friction coefficient makes the reliability that these are studied improve.Current Simple friction coefficient test platform both domestic and external is generally by survey
The maximum static friction angle of object is measured to obtain friction coefficient, test platform is made of two boards part substantially, and angular adjustment is inconvenient,
Confficient of static friction cannot be directly obtained, and the coefficient of sliding friction cannot be measured, the experiment porch for measuring the coefficient of sliding friction is most
It is to move with uniform velocity according to object, obtains force of sliding friction indirectly by measuring its pulling force, but uniform motion is not easily controlled, and
Precision is very low, and equipment price is high.
Invention content
The purpose of the present invention designs a kind of drum type brake static friction and sliding aiming at the above-mentioned problems of the prior art
PVvalue testing platform, reaching an equipment can be used to measure simultaneously confficient of static friction and the coefficient of sliding friction, occupied space
It is small, operation simple and convenient, experimental result is intuitive, can directly acquire the purpose of confficient of static friction.
The object of the present invention is achieved like this：Cylindricality horizontal ball and holder are installed respectively in rack bottom side, it is horizontal
Graduated scale is fitted on the side of rack upper end, is mutually parallel on the bracket and is rotatably installed Handle axis and jackshaft,
Handle and driving gear are packed in Handle axis, and intermediate gear is packed on jackshaft, and the intermediate gear is nibbled with driving gear
It closes, drum shaft and jackshaft are mutually parallel and are rotatably mounted among rack on position, in the middle part of the drum shaft
It is fixedly mounted with roller on position, is fixedly mounted with driving gear sum aggregate light pen A, collection light pen B, the sliding tooth respectively in the both side ends of drum shaft
Wheel is engaged with intermediate gear, and the initial position of the collection light pen A sum aggregate light pens B is respectively both vertically and horizontally, in institute
The horizontal gap for installing tested friction coefficient plate, the roller water are opened up in bottom side wall portion when stating roller initial position
The plane wall-like of the linear vertical direction configuration in position above the side of flat gap, light level timer, roller graduated scale and
Pressure switch is separately mounted on roller vertical direction planar wall, the collection light pen A sum aggregate light pens B respectively with horizontal scale ruler phase
Pressure switch is connected to by cooperation, conducting wire with light level timer, so far constitutes drum type brake static friction and the coefficient of sliding friction is surveyed
Try platform.
Structure of the invention is compact, occupies little space, and manufacturing price is cheap, operates simple and convenient, both can measure static friction system
Number, and the coefficient of sliding friction is can measure, one is dual-purpose, applied widely, high certainty of measurement.
Description of the drawings
Fig. 1 is drum type brake static friction and coefficient of sliding friction test platform general structure schematic diagram；
Fig. 2 is the rearview of Fig. 1；
Fig. 3 is roller frame schematic diagram；
Fig. 4 is the left-hand view of Fig. 3；
Fig. 5 is drum type brake static friction and coefficient of sliding friction test platform schematic three dimensional views.
Piece number explanation in figure：
1, cylindricality horizontal ball, 2, rack, 3, holder, 4, Handle axis, 5, driving gear, 6, intermediate gear, 7, drum shaft, 8,
Drive gear, 9, horizontal scale ruler, 10, light level timer, 11, roller, 12, jackshaft, 13, handle, 14, collection light pen B,
15, collection light pen A, 16, roller graduated scale, 17, pressure switch.
Specific implementation mode
Embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.A kind of drum type brake static friction and sliding friction system
Number test platform, installs cylindricality horizontal ball 1 and holder 3, horizontal scale ruler 9 is fitted on rack 2 respectively in 2 bottom side of rack
In the portion of end side, it is mutually parallel on the holder 3 and Handle axis 4 and jackshaft 12, handle 13 and driving tooth is rotatably installed
Wheel 5 is packed in Handle axis 4, and intermediate gear 6 is packed on jackshaft 12, and the intermediate gear 6 is engaged with driving gear 5, rolling
Cylinder axis 7 is mutually parallel with jackshaft 12 and is rotatably mounted on 2 intermediate position of rack, in the middle part of the drum shaft 7
It is fixedly mounted with roller 11 on position, is fixedly mounted with 8 sum aggregate light pen A15 of driving gear, collection light pen B14, institute respectively in the both side ends of drum shaft 7
Driving gear 8 is stated engage with intermediate gear 6, the initial position for collecting light pen A15 sum aggregate light pens B14 be respectively vertical direction with
Horizontal direction opens up the level for installing tested friction coefficient plate in the bottom side wall portion in 11 initial position of roller
Gap, the plane wall-like of the linear vertical direction configuration in side top position of 11 horizontal gap of the roller, light level meter
When device 10, roller graduated scale 16 and pressure switch 17 be separately mounted on 11 vertical direction planar wall of roller, the collection light pen A15
Sum aggregate light pen B14 is matched with horizontal scale ruler 9 respectively, and pressure switch 17 is connected to by conducting wire with light level timer 10.
In use, being brigadier's this platform placement horizontality with cylindricality horizontal ball 1, static friction system between plate and object is tested
When number, it is inserted into installation test plate in the horizontal gap of 11 bottom of roller, object under test is placed on plate, opens collection light pen
A15 makes its hot spot fall on 9 zero graduation of horizontal scale ruler, starts rotational handle 13, roller 11 is made slowly to be rotated, when waiting for
When surveying object and plate and opposite sliding occur, the numerical value on read level graduated scale 9, as unit of cm divided by 7 axle center of drum shaft
Line and 9 vertical range numerical valu of horizontal scale ruler, resulting value is coefficient of maximum static friction.
When testing the coefficient of sliding friction between plate and object, roller 11 is rotated, makes the rotation of roller graduated scale 16 in level
Position opens collection light pen B14, so that its hot spot is fallen on 9 zero graduation of horizontal scale ruler, test board is inserted on roller graduated scale 16
Part, rotation roller 11 make its numerical value on graduation mark be worth more than measured by previous step, open light level timer 10, hold
Object under test, in being engaged, object under test bottom is read to light level meter by roller graduated scale 16 with pressure switch 17
When device 10 distance L, letting go makes object under test slide, when object under test be detached from pressure switch 17 contact while, pressure is opened
It closes 17 and Fibre Optical Sensor timer 10 is activated by conducting wire, read object under test and slide to light level timer 10 from pressure switch 17
Time t, read the value of horizontal scale ruler 9 at this time, as unit of cm divided by 7 axial line of drum shaft is vertical with horizontal scale ruler 9
Distance values obtain μ values.
Directly obtain friction coefficient mu1Value.
Claims (1)
1. a kind of drum type brake static friction and coefficient of sliding friction test platform, it is characterised in that：In rack (2) bottom side respectively
Cylindricality horizontal ball (1) and holder (3) are installed, horizontal scale ruler (9) is fitted on rack (2) upper end side, in the holder (3)
On be mutually parallel and Handle axis (4) and jackshaft (12) be rotatably installed, handle (13) and driving gear (5) are packed in handle
On axis (4), intermediate gear (6) is packed on jackshaft (12), and the intermediate gear (6) is engaged with driving gear (5), drum shaft
(7) it is mutually parallel and is rotatably mounted on the intermediate position of rack (2) with jackshaft (12), in the drum shaft (7)
Between be fixedly mounted with roller (11) on position, be fixedly mounted with respectively in the both side ends of drum shaft (7) driving gear (8) sum aggregate light pen A (15),
Collect light pen B (14), the driving gear (8) is engaged with intermediate gear (6), described to collect the first of light pen A (15) sum aggregate light pen B (14)
Beginning position is respectively both vertically and horizontally, to be opened up in the bottom side wall portion in the roller (11) initial position for pacifying
Dress is tested the horizontal gap of friction coefficient plate, the linear vertical direction in side top position of the horizontal gap of the roller (11)
The plane wall-like of configuration, light level timer (10), roller graduated scale (16) and pressure switch (17) are separately mounted to roller
(11) on vertical direction planar wall, collection light pen A (15) the sum aggregate light pen B (14) matches with horizontal scale ruler (9) respectively, leads
Pressure switch (17) is connected to by line with light level timer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194417.5A CN105928869B (en) | 2016-03-26 | 2016-03-26 | Drum type brake static friction and coefficient of sliding friction test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194417.5A CN105928869B (en) | 2016-03-26 | 2016-03-26 | Drum type brake static friction and coefficient of sliding friction test platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105928869A CN105928869A (en) | 2016-09-07 |
| CN105928869B true CN105928869B (en) | 2018-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610194417.5A Expired - Fee Related CN105928869B (en) | 2016-03-26 | 2016-03-26 | Drum type brake static friction and coefficient of sliding friction test platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105928869B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521169B (en) * | 2018-11-29 | 2021-05-11 | 新昌县小布点农业发展有限公司 | Freshness degree detection equipment based on outer surface friction force of eggs |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202994635U (en) * | 2012-12-06 | 2013-06-12 | 农业部规划设计研究院 | Device for measuring maximum static friction coefficient of loose material |
| CN103278411A (en) * | 2013-05-14 | 2013-09-04 | 吉林大学 | Spherical contact type friction characteristic testing device under ultrasonic vibration |
| CN103335942A (en) * | 2013-07-08 | 2013-10-02 | 大连理工大学 | Equipment and method used for measuring friction coefficient between plastic and metal mold |
| CN103400522A (en) * | 2013-07-31 | 2013-11-20 | 浙江大学城市学院 | High-precision fine adjustment slope tester for measuring static/dynamic and cylinder rolling friction coefficients |
| JP2013257226A (en) * | 2012-06-13 | 2013-12-26 | Canon Inc | Friction characteristics measuring method, measuring device and program |
| CN103792186A (en) * | 2014-02-21 | 2014-05-14 | 西北农林科技大学 | Device for measuring friction coefficient of agricultural biomass plane |
| CN104535491A (en) * | 2014-12-22 | 2015-04-22 | 浙江工业大学 | Device for testing friction coefficient of circular ring structure metal component |
-
2016
- 2016-03-26 CN CN201610194417.5A patent/CN105928869B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013257226A (en) * | 2012-06-13 | 2013-12-26 | Canon Inc | Friction characteristics measuring method, measuring device and program |
| CN202994635U (en) * | 2012-12-06 | 2013-06-12 | 农业部规划设计研究院 | Device for measuring maximum static friction coefficient of loose material |
| CN103278411A (en) * | 2013-05-14 | 2013-09-04 | 吉林大学 | Spherical contact type friction characteristic testing device under ultrasonic vibration |
| CN103335942A (en) * | 2013-07-08 | 2013-10-02 | 大连理工大学 | Equipment and method used for measuring friction coefficient between plastic and metal mold |
| CN103400522A (en) * | 2013-07-31 | 2013-11-20 | 浙江大学城市学院 | High-precision fine adjustment slope tester for measuring static/dynamic and cylinder rolling friction coefficients |
| CN103792186A (en) * | 2014-02-21 | 2014-05-14 | 西北农林科技大学 | Device for measuring friction coefficient of agricultural biomass plane |
| CN104535491A (en) * | 2014-12-22 | 2015-04-22 | 浙江工业大学 | Device for testing friction coefficient of circular ring structure metal component |
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| Publication number | Publication date |
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| CN105928869A (en) | 2016-09-07 |
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Granted publication date: 20181109 Termination date: 20190326 |