CN103207125B - Electro-contact abrasion test bench for cylindrical conductive slip ring - Google Patents
Electro-contact abrasion test bench for cylindrical conductive slip ring Download PDFInfo
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- CN103207125B CN103207125B CN201310073467.4A CN201310073467A CN103207125B CN 103207125 B CN103207125 B CN 103207125B CN 201310073467 A CN201310073467 A CN 201310073467A CN 103207125 B CN103207125 B CN 103207125B
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- slip ring
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000005299 abrasion Methods 0.000 title abstract description 8
- 238000005259 measurement Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 4
- 238000011160 research Methods 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000010615 ring circuit Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention introduces an electro-contact abrasion test bench for a cylindrical conductive slip ring. The electro-contact abrasion test bench comprises a conductive ring driving system, a pressing force and friction force testing system and a contact resistance testing system. The to-be-test conductive ring is supported and positioned by a taper hole cone or a mounted center on a driving shaft and a driven shaft, and is driven to rotate by a pull pin. Two to-be-test brush wires are respectively mounted on two clamp arms; and the same slip ring groove is compressed tightly by the brush wires to operate non-lubricated slip friction. Positive pressure and friction between the slip ring and the brush wires are respectively measured by two force sensors; a serial loop composed of the to-be-test conductive ring, the upper brush wire and the lower brush wire is connected with a standard low resistance meter to measure the contact resistance between the slip ring and the brush wires; and the loop can be connected with a standard voltage-current source to perform charged abrasion test. The abrasion test bench can meet requirements of the abrasion test on cylindrical conductive slip ring with various sizes; operating status of friction abrasion between the conductive ring and the brush wires can be simulated on conditions of different rotating speed and contact pressing force; and the contact resistance, friction coefficient, friction rate and the like can be measured.
Description
Technical field
The present invention relates to a kind of wear test platform, particularly a kind of column type conducting slip ring electrically contacts wear test platform.
Background technology
Conducting slip ring is to realize two to relatively rotate the signal of mechanism and the accurate power transmitting device of current delivery.Formed by conducting ring, brush silk, sectional shelf-unit, precision bearing, dust cover and other auxiliary member etc.It is the Primary Component of various precise rotating platforms, hydro-extractor and inertial navigation equipment.Along with its production standard and mass development, conducting slip ring has been widely used on the electromechanical equipments such as security protection, factory automation, electric power, finance, instrument, aviation, military affairs, transport, building.
Conducting slip ring structure is divided into column type, disc type.The circuit of column type slip ring is to be evenly arranged on the same face of cylinder; The circuit of disc type slip ring is concentric, and as the ditch on phonographic record, major part all adopts column type slip ring at present.Conducting ring surface is through multilayer noble metal plating; Brush adopts gold alloy wire to make, and comes transmission of signal and electric current by elastic pressure and the sliding contact of conducting ring circuit groove of brush.It is the Primary Component of the equipment such as various precise rotating platforms, hydro-extractor.There is feature in serviceable life safe, reliable, stable, low temperature resistant, non-maintaining and that increase.
The key technical indexes of conducting slip ring comprises loop rated current, port number, insulation resistance, dielectric strength, sound state contact resistance variation value and working speed etc.In the use procedure of conducting slip ring, there will be the problem such as rubbing wear and contact resistance shakiness under the electric contact state between conducting ring and brush silk, these have had a strong impact on the usability of conducting slip ring.Therefore design the special abrasion testing device that electrically contacts, the current-carrying wearing character of conducting slip ring is just studied and is of great practical significance.
Although at present more existing friction-wear test equipment, but about electrically contacting the design of sliding frictional wear testing equipment and developing few, especially the research of the friction-wear test equipment Design and manufacture aspect under underloading light current contact conditions, has no relevant report at present.According to the underloading light current contact real work feature of precise conductive slip ring, develop a kind of column type conducting slip ring and electrically contacted wear test platform.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of testing table that can simulate column type conducting slip ring real work state, it can to conducting ring and brush silk electrically contact sliding frictional wear and dynamic contact resistance state detects analysis, its running parameter range of adjustment is wide, easy to operate.
This column type conducting slip ring electrically contacts wear test platform and comprises mechanical hook-up and electric device.Mechanical hook-up comprises base, support post, mounting plate, drive motor, shaft coupling, main drive shaft, driven shaft, left top, right top, finger, adjustable seats, sliding seat, free bearing, swing arm, tong arm, rolling bearing units, leaf spring, set screw, set nut and bearing pin.The effect of mechanical hook-up be to tested conducting ring provide accurately and reliably locate, installation and adjustable steady rotating speed, form the snap-in force of relative position and setting between tested slip-ring brush silk and conducting ring.Electric device comprises drive motor speed regulator, friction measurement sensor, normal pressure survey sensor and modulate circuit thereof, digital display meter head, digital display counting device, standard driving voltage current source and contact resistance dynamometer.
Support post, drive motor, sliding seat are installed on base, on support post, mounting plate have been installed to place standard driving voltage current source and measuring contact resistance instrument.Drive motor drives main drive shaft at the uniform velocity to rotate with the rotating speed of setting by shaft coupling, there are taper hole and the chamfering conical surface in one end of main drive shaft and driven shaft, taper hole is used for installing top, so that cylindrical hole location in conducting ring conducting ring two ends, the chamfering conical surface is for conducting ring conducting ring external cylindrical surface location, tested conducting ring is by the top supporting and location of the taper hole conical surface on main drive shaft and driven shaft or installation, and by finger driven rotary, the number of turns of rotation is by digital display counting device record.Driven shaft is arranged in adjustable seats, can adapt to the measurement requirement of different length slip ring.A free bearing is installed on sliding seat, on free bearing, by a bearing pin, a swing arm that can swing is installed, in swing arm, by two bearing pins, upper and lower two tong arms are installed, two sections of tested brush silks are separately fixed on these two tong arms, contact with same conducting ring annular groove simultaneously, do unlubricated sliding friction, two sections of brush silks are connected and are linked in a standard low resistance admeasuring apparatus with a tested conducting ring annular groove, measured contact resistance is two brush silks and conducting ring annular groove sliding pair contact resistance sum, brush silk and the contact resistance of conducting ring annular groove are a half value of measured contact resistance.Such structure can eliminate conducting ring and other signals are derived the impact that adds contact resistance between part, makes measurement result more accurate.
Sliding seat can be adjusted position to measure diverse location annular groove and the contact resistance of brushing silk in left and right.Frictional experiment all carries out under unlubricated condition, and the snap-in force of tong arm comes from the elastic force of rear end leaf spring, utilizes lever principle to be converted into the clamping force of tong arm, and the position of set screw can regulate the size of power.A power sensor of measuring on-load pressure is installed in lower tong arm rear end, a power sensor of measuring friction force is also installed on sliding seat.In the time that conducting ring rotates, two friction force of brushing between silk and conducting ring annular groove make swing arm produce shaking moment, thereby are applied on the power sensor of measuring friction force.Can measure on-load pressure and friction force by these two sensors and conditioning circuit module, measurement data may be displayed on front panel, and digital display counting device is used for recording wearing and tearing and rotates the number of turns.
For the tested slip ring of duty that is virtually reality like reality and the state of wear of brush silk, tested conducting ring and brush silk loop can also be connected to a normal voltage current source, by setting different voltage and currents, the friction force under research electriferous state and the rule of the degree of wear.All measurement data can and store computing machine into by a data collecting card collection, so that analyzing and processing.
Utilize this testing table, tested conducting ring annular groove and brush silk are removed after the wear test through rotating after a while or necessarily the number of turns.Utilize the equipment such as precision balance and tool microscope, by measuring difference in quality and the wear morphology before and after conducting ring and the test of brush silk, can obtain wear extent and the regularity of distribution of tested conducting ring and brush silk.This test platform can adapt to the wear measurement requirement of multiple conducting slip ring, has simulated realistically the service wear state of conducting slip ring, and testing table loads flexibly, and speed governing is convenient, simple to operate.
Brief description of the drawings
Fig. 1 is the general structure that column type conducting slip ring electrically contacts wear test platform;
Fig. 2 is the Local map that column type conducting slip ring electrically contacts wear test platform mechanical hook-up;
Fig. 3 is the partial sectional view that column type conducting slip ring electrically contacts wear test platform mechanical hook-up.
In figure, 1 base, 2 drive motor, 3 shaft couplings, 4 main drive shafts, 5 left rolling bearing units, 6 sliding seats, 7 lock-screws, 8 tested brush silks, 9 insulation sleeves, 10 adjustable seats, 11 set nuts, 12 driven shafts, 13 right rolling bearing units, 14 is right top, 15 standard driving voltage current sources, 16 tested conducting rings, 17 tong arms, 18 swing arms, 19 free bearings, 20 digital display meter heads, 21 Estimate of Resistance for DC Low Resistance measuring instruments, 22 machine governors, 23 mounting plates, 24 support posts, 25 front set screw, 26 friction measurement sensors, 27 bearing pins, 28 rear set screw, 29 normal pressure survey sensors, 30 leaf springs, 31 fingers, 32 is left top.
Embodiment
It is the general structure that a kind of column type conducting slip ring electrically contacts wear test platform that combination technology scheme and accompanying drawing describe the specific embodiment of the present invention: Fig. 1 in detail, and its layout is: four support posts 24, drive motor 2, adjustable support 10, sliding seat 6, left rolling bearing units 5 and right rolling bearing units 12 are installed on base 1.Mounting plate 23 has been installed to place standard driving voltage current source 15 and measuring contact resistance instrument 21 on support post 24, front panel is equipped with digital display meter head 20 and machine governor 22.Drive motor 2 is fixed on base 1, by shaft coupling 3 by rotational conveyance to main drive shaft 4, main drive shaft 4 is contained on left rolling bearing units 5, driven shaft 12 is contained on right rolling bearing units 13, tested conducting ring 16 is by being contained in main drive shaft 4 and driven shaft 12 top location above.
Fig. 2 is the partial enlarged drawing of the mechanical hook-up part of this experiment porch, and tested slip ring 16 is arranged between left top 32 and right top 14, by finger 31 driven rotary.Tested slip ring 16 is installed, is first unclamped two set nuts 11 in adjustable seats 10, mobile adjustable seats 10, after a left side top 32 and right top 14 is close to and works good with tested conducting ring 16 mandrel two ends center holes, tightens set nut 11 and locates.
As can be seen from Figure 3, two sections of tested brush silks 8 are arranged in insulation sleeve 9, are then respectively installed on upper and lower tong arm 17.Tong arm 17 use are hinged with swing arm 18 with the bearing pin 27 of rolling bearing, and swing arm 18 use are hinged on free bearing 19 with the bearing pin 27 of rolling bearing, and two screws of free bearing 19 use are fixed on sliding seat 6, and the lower groove of sliding seat 6 is enclosed within on the riser of base 1.For tested brush silk 8 is coordinated with some slip ring grooves, can adjust the position, left and right of sliding seat 6, fixing by lock-screw 7 afterwards.Two tong arms 17 are the equiarm long lever taking bearing pin 27 as fulcrum, and the left end of upper tong arm is installed rear set screw 28, and the left end of lower tong arm is installed normal pressure survey sensor 29, between rear set screw 28 and normal pressure survey sensor 29, is connected with leaf spring 30.The elastic force that snap-in force between tested brush silk 8 and tested conducting ring 16 comes from rear end leaf spring 30, utilizes lever principle to be converted into the snap-in force of tong arm 17, and after turn, set screw 28 can regulate the size of snap-in force.Set screw 25 before be equipped with on the top of swing arm 18, its head withstands on friction measurement sensor 26, and friction measurement sensor 26 is fixed on sliding seat 6.
When work, drive motor 2 drives driving shaft 4 at the uniform velocity to rotate with the rotating speed of setting by shaft coupling 3, and the number of turns of rotation is by digital display counting device record.The rotating speed of drive motor 2 can be by machine governor 22 from continuous setup between 10rpm to 1400 rpm, between tested conducting ring 16 and upper and lower two brush silks 8, do unlubricated sliding friction, the effect of two friction force of upper and lower two brush silk 8 opposite directions that are subject to can drive swing arm 18, produce shaking moment, be applied on friction measurement sensor 26 by front set screw 25, snap-in force is measured by normal pressure survey sensor 29, and its snap-in force can regulate continuously between 0-10N.
From the snap-in force of these two sensors and friction force signal by conditioning circuit module processes and displays on front panel on digital display meter head 20, wearing and tearing are rotated the number of turns and can be observed by the digital display counting device on front panel.Contact resistance between tested slip ring and brush silk is measured with a standard direct current low resistance admeasuring apparatus 21, two sections of brush silks 8 are connected and are linked in Estimate of Resistance for DC Low Resistance measuring instrument with a tested conducting ring 16, because measuring circuit has passed through two identical brush silks 8 and a tested conducting ring 16, so the half that the contact resistance value of a friction pair (a brush silk and a slip ring) is measured value.
In the time will carrying out charged wear test, the loops that need to brush by tested conducting ring 16 and up and down silk 8 compositions are connected to the output terminal of a standard driving voltage current source 15, by setting different voltage and currents, wearing and tearing certain hour or the rotation number of turns, the friction force under research electriferous state and the rule of the degree of wear.All measurement data can and be stored in host computer by a data collecting card collection, so that analyzing and processing.After wear test after a while, can brush silk 8 by tested conducting ring 16 and up and down pulls down, utilize precision balance to measure the quality after wearing and tearing, quality contrast with wearing and tearing pre-test, can draw its wear extent, utilize tool microscope can observe before and after wearing and tearing tested conducting ring 16 and the wearing and tearing distribution pattern of brush silk 8 up and down, friction factor and contact resistance can record in test, thereby can draw tested brush threads 8 and tested conducting ring 16 wear laws.
Claims (2)
1. column type conducting slip ring electrically contacts a wear test platform, it is characterized in that: this column type conducting slip ring electrically contacts wear test platform and comprises mechanical hook-up and electric device; Mechanical hook-up comprises base, support post, mounting plate, drive motor, shaft coupling, main drive shaft, driven shaft, left top, right top, finger, adjustable seats, sliding seat, free bearing, swing arm, tong arm, rolling bearing units, leaf spring, set screw, set nut and bearing pin; Electric device comprises drive motor speed regulator, friction measurement sensor, normal pressure survey sensor and modulate circuit thereof, digital display meter head, digital display counting device, standard driving voltage current source and contact resistance dynamometer;
Support post, drive motor, sliding seat are installed on base, on support post, mounting plate have been installed to place standard driving voltage current source and measuring contact resistance instrument, drive motor drives main drive shaft at the uniform velocity to rotate with the rotating speed of setting by shaft coupling, there are taper hole and the chamfering conical surface in one end of main drive shaft and driven shaft, taper hole is used for installing top, so that cylindrical hole location in conducting ring two ends, the chamfering conical surface is for conducting ring external cylindrical surface location, tested conducting ring is by the top supporting and location of the chamfering conical surface on main drive shaft and driven shaft or installation, and by finger driven rotary, the number of turns of rotation is by digital display counting device record, driven shaft is arranged in adjustable seats, adapts to the measurement requirement of different length slip ring, a free bearing is installed on sliding seat, the swing arm of a swing is installed by a bearing pin on free bearing, in swing arm, by two bearing pins, upper and lower two tong arms are installed, two sections of tested brush silks are separately fixed on these two tong arms, contact with same conducting ring annular groove simultaneously, do unlubricated sliding friction, two sections of brush silks are connected and are linked in a measuring contact resistance instrument with a tested conducting ring annular groove, measured contact resistance is two brush silks and conducting ring annular groove sliding pair contact resistance sum, brush silk and the contact resistance of conducting ring annular groove are a half value of measured contact resistance,
Position is adjusted to measure diverse location annular groove and the contact resistance of brushing silk in sliding seat left and right; Frictional experiment all carries out under unlubricated condition, and the snap-in force of tong arm comes from the elastic force of rear end leaf spring, utilizes lever principle to be converted into the clamping force of tong arm, the size of the position adjustments power of set screw; A normal pressure survey sensor is installed in lower tong arm rear end, a friction measurement sensor is also installed on sliding seat; In the time that conducting ring rotates, two friction force of brushing between silk and conducting ring annular groove make swing arm produce shaking moment, thereby are applied on friction measurement sensor; Measure the normal pressure and the friction force that load by conditioning circuit module, measurement data is presented on front panel, and digital display counting device is used for recording wearing and tearing and rotates the number of turns.
2. a kind of column type conducting slip ring according to claim 1 electrically contacts wear test platform, it is characterized in that, tested conducting ring and brush silk loop are connected to a normal voltage current source, by setting different voltage and currents, and the friction force under research electriferous state and the rule of the degree of wear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073467.4A CN103207125B (en) | 2013-03-07 | 2013-03-07 | Electro-contact abrasion test bench for cylindrical conductive slip ring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310073467.4A CN103207125B (en) | 2013-03-07 | 2013-03-07 | Electro-contact abrasion test bench for cylindrical conductive slip ring |
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| CN103207125A CN103207125A (en) | 2013-07-17 |
| CN103207125B true CN103207125B (en) | 2014-11-12 |
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| JPS61142943A (en) * | 1984-12-14 | 1986-06-30 | Toshiba Corp | Abrasion meter for rotary machine brush |
| US7293448B2 (en) * | 2005-05-04 | 2007-11-13 | International Truck Intellectual Property Company, Llc | Abrasion resistance testing apparatus |
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| CN201373828Y (en) * | 2009-03-24 | 2009-12-30 | 辽宁工程技术大学 | Sliding electrical-contact abrasion test device |
| CN101975709B (en) * | 2010-10-29 | 2012-05-09 | 华南理工大学 | Bolt loading ring-block type corrosive wear testing machine |
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- 2013-03-07 CN CN201310073467.4A patent/CN103207125B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037033A (en) * | 2017-11-13 | 2018-05-15 | 大连理工大学 | A kind of beam formula brush conducting slip ring makes electrical contact with abrasion detection unit |
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| CN103207125A (en) | 2013-07-17 |
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