CN108253997A - Method for measuring wear degree of slip ring device, fault diagnosis method and auxiliary measuring device - Google Patents
Method for measuring wear degree of slip ring device, fault diagnosis method and auxiliary measuring device Download PDFInfo
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- CN108253997A CN108253997A CN201611234615.6A CN201611234615A CN108253997A CN 108253997 A CN108253997 A CN 108253997A CN 201611234615 A CN201611234615 A CN 201611234615A CN 108253997 A CN108253997 A CN 108253997A
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- 238000005259 measurement Methods 0.000 claims description 118
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
- G01D5/165—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance by relative movement of a point of contact or actuation and a resistive track
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Abstract
The invention provides a method for measuring the wear degree of a slip ring device (100), a fault diagnosis method and an auxiliary measuring device, and relates to the field of slip ring devices. The measuring method comprises the following steps: measuring a total resistance R10 between the first probe (310) and the second probe (320) while the slideway (111) and the sliding pin (112) remain relatively stationary; measuring a control total resistance R20 between the first probe and the second probe when the control slide and the control slide needle are kept relatively static; the difference between the total resistance R10 and the control total resistance R20 was calculated. This supplementary measuring device includes: a main body (210); a positioning assembly (220) that holds the main body (210) at a predetermined position; a pressure assembly (230) sized to adjustably apply pressure to the body. The fault diagnosis method comprises the step of judging whether the slip ring device has faults or not according to the difference value of the total resistance R10 and the comparison total resistance R20. By means of the method and the device, the degree of wear or failure can be determined by measuring the increase of the static contact resistance.
Description
Technical field
The present invention relates to the measuring method of slip-ring device field more particularly to the degree of wear of slip-ring device, slip-ring devices
Method for diagnosing faults and aided measurement device.
Background technology
Fig. 1 is the structure diagram for showing slip-ring device 100, slip-ring device 100 be for by electric energy and electric signal etc. from
Fixing device is transmitted to the electric component of rotating device.As shown in Figure 1, slip-ring device 100 includes stationary part 110 and rotating part
Divide 120.Stationary part 110 is connected with fixing device, and rotating part 120 is connected with rotating device.Stationary part 110
Including slideway 111, the first conducting wire 112 and the first Harding the head contact pin 113 being sequentially connected electrically, wherein, the shape in a ring of slideway 111
Shape.Rotating part 120 includes cunning needle 121, the second conducting wire 122 and the second Harding the head contact pin 123 being sequentially connected electrically.Sliding needle 121
The central axis that slideway 111 can be surrounded rotates, and slideway 111 is in contact with sliding needle 121, to transmit electric energy and electric signal.
Conduction between the slideway 111 of slip-ring device 100 and sliding needle 121 determines the performance of slip-ring device 100.When sliding needle
121 around slideway 111 rotate when, constantly rub, and generate cut between slideway 111 and sliding needle 121.With slip-ring device 100
The increase of service life, the abrasion between slideway 111 and sliding needle 121 is increasingly severe, and cut is more and more deeper, thus can influence to slide
Conduction between road 111 and sliding needle 121, so as to influence the performance of slip-ring device 100.Therefore, to slideway 111 and sliding needle 121
The degree of wear measure and be very important.
Due to the abrasion between slideway 111 and sliding needle 121 it is bigger, the Static Contact between slideway 111 and sliding needle 121
Resistance is bigger, therefore the incrementss by measuring the Static Contact resistance between slideway 111 and sliding needle 121, can know slip ring
The degree of wear of device 100 thus determines when to safeguard and replaces slip-ring device 100.Herein, term " Static Contact resistance "
When referring to slideway and opposing stationary sliding needle, the contact resistance between slideway and sliding needle.For ease of description, slideway 111 is with sliding
Static Contact resistance between needle 121 is referred to as the Static Contact resistance or referred to as Static Contact resistance of slip-ring device 100.
Fig. 2 shows of the prior art for measuring the method for the degree of wear of slip-ring device 100.In step S1 ', carry
For electric resistance measuring apparatus and original control slip-ring device.Electric resistance measuring apparatus includes the first probe 310 and the second probe
320, and can be used in measuring the resistance between the first probe 310 and the second probe 320.Compare slip-ring device and slip-ring device
100 structure is identical, and slides needle and first including the control slideway identical with slideway 111, the control identical with sliding needle 121
Identical the first conducting wire of control of conducting wire 112, control second conducting wire identical with the second conducting wire 122 and the first Harding head contact pin 113
Identical the first Harding of control head contact pin and the control second Harding head contact pin identical with the second Harding head contact pin 123.
Then, in step S2 ', the first probe 310 is electrically connected, and second is visited with the first Harding head contact pin 113
First 320 are electrically connected with the second Harding head contact pin 123.
In step S3 ', the first probe 310 and the second probe when slideway 111 keeps opposing stationary with sliding needle 121 are measured
All-in resistance R100 between 320, and R100 meets relationship below：
R100=R101+R102+R103+R104+R105+R106+R107+R108+R109+R110+R 111+R112+
R113,
Wherein, R101 is the contact resistance between the first probe 310 and the first Harding head contact pin 113；R102 is the first Kazakhstan
The resistance of fourth head contact pin 113；R103 is the contact resistance between the first Harding head 113 and first conducting wire 112 of contact pin；R104 is
The resistance of one conducting wire 112；R105 is the contact resistance between the first conducting wire 112 and slideway 111；R106 is the resistance of slideway 111；
R107 is the Static Contact resistance between slideway 111 and sliding needle 121；R108 is the resistance of sliding needle 121；R109 be sliding needle 121 with
Contact resistance between second conducting wire 122；R110 is the resistance of the second conducting wire 122；R111 is the second conducting wire 122 and the second Harding
Contact resistance between head contact pin 123；R112 is the resistance of the second Harding head contact pin 123；And R113 is that the second Harding head is inserted
Contact resistance between the probe of needle 123 and second 320.
In step S4 ', by first probe 310 with control the first Harding head contact pin be electrically connected, and by second probe 320
It is electrically connected, while ensure the resistance between the first probe 310 and slideway 111 and the second probe with control the second Harding head contact pin
The sum of resistance between 320 and sliding needle 121 be equal to resistance between the first probe 310 and control slideway with second pop one's head in 320 and
The sum of resistance between the sliding needle of control, that is, ensure to meet relationship below：
R101+R102+R103+R104+R105+R106+R108+R109+R110+R111+R112+R 113=R201+
R202+R203+R204+R205+R206+R208+R209+R210+R211+R212+R213, (1)
Wherein, R201 is the first probe 310 with compareing the contact resistance between the first Harding head contact pin；R202 is control
The resistance of one Harding head contact pin；R203 is control the first Harding head contact pin with compareing the contact resistance between the first conducting wire；R204
It is the resistance for compareing the first conducting wire；R205 is the first conducting wire of control with compareing the contact resistance between slideway；R206 is that control is slided
The resistance in road；R208 is the resistance of the sliding needle of control；R209 is the sliding needle of control with compareing the contact resistance between the second conducting wire；R210
It is the resistance for compareing the second conducting wire；R211 is to compare the second conducting wire with compareing the contact resistance between the second Harding head contact pin；
R212 is the resistance for compareing the second Harding head contact pin；And R213 is between the second Harding of control head contact pin and the second probe 320
Contact resistance.
In step S5 ', measure control slideway and visited with compareing the first probe 310 and second when sliding needle keeps opposing stationary
Control all-in resistance R200 between first 320, and R200 meets relationship below：
R200=R201+R202+R203+R204+R205+R206+R207+R208+R209+R210+R 211+R212+
R213,
Wherein, R207 is to compare slideway with compareing the Static Contact resistance between sliding needle.
In step S6 ', difference Ras ' of the all-in resistance R100 with compareing all-in resistance R200 is calculated, to determine slip-ring device
The degree of wear, wherein, Ra ' meets the following formula：
Ra '=R100-R200=R107-R207.
Specifically, difference Ra ' is Static Contact electricity of the Static Contact resistance of slip-ring device with compareing slip-ring device
The difference of resistance.By measuring the incrementss of the Static Contact resistance of slip-ring device relative to original control slip-ring device,
To determine the degree of wear of slip-ring device.
However, in the prior art method, the contact resistance between the first Harding head 113 and first conducting wire 112 of contact pin
Contact resistance R111 between R103, the second Harding head contact pin 123 and the second conducting wire 122, compare the first Harding contact pin with it is right
According to the contact resistance R203 between the first conducting wire and control the second Harding head contact pin with compareing the contact resistance between the second conducting wire
R211 is in contact to generate by Harding's head contact pin with conducting wire.However, contact resistance R103, R111, R203 and R211 can be with
The way of contact, the variation of contact and change.In addition, these components are assembled by the manufacturer of slip-ring device, process is being used
In these contact resistances may change.Therefore, contact resistance R103, R111, R203 and R211 is uncontrollable.
In addition, the resistance R104 of the first conducting wire 112, the second conducting wire of the second conducting wire 122, the first conducting wire of control and control,
R110, R204 and R210 depend on the length of conducting wire.However, the length of conducting wire is determined by the manufacturer of slip-ring device.Therefore,
Resistance R104, R110, R204 and R210 are uncontrollable.
In addition, contact resistance R105 between the first conducting wire 112 and slideway 111 and compare the first conducting wire with compare slideway it
Between contact resistance R205 be in contact to generate with slideway by conducting wire.Conducting wire is bolted with slideway, contact resistance
R105 and R205 can with Bolt Torque, angle variation and change.In addition, manufacturer group of these components by slip-ring device
Dress, these contact resistances may change in use.Therefore, contact resistance R105 and R205 is uncontrollable.
In addition, contact resistance R109 between the second conducting wire 122 and sliding needle 121 and compare the second conducting wire with compare cunning needle it
Between contact resistance R209 be in contact to generate with sliding needle by conducting wire.Conducting wire is bolted with sliding needle, contact resistance
R109 and R209 can with Bolt Torque, angle variation and change.In addition, manufacturer group of these components by slip-ring device
Dress, these contact resistances may change in use.Therefore, contact resistance R109 and R209 is uncontrollable.
As noted previously, as the partial ohmic and contact resistance in above formula (1) are uncontrollable, therefore it is difficult to ensure that and meets above formula
(1).Meanwhile the numerical value of these resistance and contact resistance is close with the numerical value of the Static Contact resistance of slip-ring device, therefore cannot neglect
Slightly.Therefore, the measuring method of the prior art tends not to obtain the incrementss of the Static Contact resistance of slip-ring device, so as to be difficult to
Determine the degree of wear of slip-ring device.
Invention content
It is an object of the present invention to provide for measuring the novel method of the degree of wear of slip-ring device, the measuring method
The degree of wear of slip-ring device can be determined by measuring the incrementss of the Static Contact resistance between slideway and sliding needle.This hair
Another bright purpose is to provide the aided measurement device for the novel method.
An aspect of of the present present invention provides a kind of method for the degree of wear for being used to measure slip-ring device.Wherein, slip ring fills
It puts including slideway and sliding needle, slideway is annular in shape, and the central axis that sliding needle can surround slideway is rotated and is in contact simultaneously with slideway
Electrical connection.This method includes the following steps：S1 the first aided measurement device, the second aided measurement device, third auxiliary) is provided to survey
Device, the 4th aided measurement device, electric resistance measuring apparatus and original control slip-ring device are measured, wherein, resistance measurement dress
It puts and pops one's head in including the first probe and second and can be used in measuring the resistance between the first probe and the second probe, compare slip ring
Device is identical with the structure of slip-ring device and slides needle including the control slideway identical with slideway and the control identical with sliding needle；
S2) the first probe is electrically connected with slideway via the first aided measurement device, and via the second aided measurement device by second
Probe is electrically connected with sliding needle；It is total between the first probe and the second probe when S3) measuring slideway and opposing stationary sliding needle holding
Resistance R10；S4) the first probe is electrically connected, and surveyed via the 4th auxiliary with control slideway via third aided measurement device
Second probe is electrically connected by amount device with the sliding needle of control, at the same ensure the resistance between the first probe and slideway and second pop one's head in and
The sum of resistance between sliding needle is equal to the resistance between the first probe and control slideway and the second probe and compare and slides between needle
The sum of resistance；S5 control slideway) is measured with compareing pair between the first probe and the second probe when sliding needle keeps opposing stationary
According to all-in resistance R20；And S6) difference Ras of the all-in resistance R10 with compareing all-in resistance R20 is calculated, to determine the abrasion of slip-ring device
Degree.
Compared with the measuring method of the prior art, measuring method according to the present invention, by using controlled can assisting
Measuring device rather than uncontrollable Harding head contact pin and conducting wire will pop one's head in and be connected with slideway and probe with sliding needle so that energy
The contact resistance between the component being connected with each other enough is controlled, so that it is guaranteed that meeting the resistance and second between the first probe and slideway
The resistance that the sum of resistance between sliding needle is equal between the first probe and control slideway of popping one's head in pops one's head in and compares sliding needle with second
Between the sum of resistance.Therefore, measuring method according to the present invention can obtain the increase of the Static Contact resistance of slip-ring device
Amount.In addition, measuring method according to the present invention, the quantity of the component between probe and slideway and between probe and sliding needle subtracts
It is few so that the quantity of the contact resistance of required control is also reduced.Therefore, measuring method according to the present invention is easy to operate and energy
Enough save the time.
According to a preferred embodiment of the invention, in step S4) in, it is ensured that meet the following formula：
R13=R23 and R17=R27,
Wherein, R13 is the contact resistance between the first aided measurement device and slideway, and R23 is third aided measurement device
With compareing the contact resistance between slideway, R17 is contact resistance between the second aided measurement device and sliding needle and R27 is
4th aided measurement device is with compareing the contact resistance between sliding needle.
According to a preferred embodiment of the invention, the first aided measurement device, the second aided measurement device, third subsidiary
Device and the 4th aided measurement device are identical and include：First probe with slideway can be electrically connected, visited second by main body
Head is electrically connected with sliding needle, the first probe with control slideway is electrically connected and is electrically connected the second probe with the sliding needle of control；Positioning
Component can be mounted on slip-ring device and main body is held in a predetermined position place relative to slip-ring device, so as to keep
Main body and slideway, main body and sliding needle, main body and the contact position and contact angle for compareing slideway and main body with compareing sliding needle；And
Pressure assembly applies pressure in a manner that size is adjustable to main body, to adjust between main body and slideway, main body and sliding needle it
Between, main body with compareing between slideway and contact of the main body with compareing sliding needle, wherein by adjusting contact position, contact
And contact angle, to ensure R13=R23 and R17=R27.
Another aspect provides a kind of aided measurement devices.The aided measurement device is used for subsidiary slip ring
The Static Contact resistance of device, and the aided measurement device includes：Electric resistance measuring apparatus and slip-ring device are electrically connected by main body
It connects；Positioning component, which is provided with through-hole, main body can wear by the through-hole of positioning component and in the through-hole of positioning component
Wall sliding contact and cause main body moved along scheduled direction, and positioning component can be mounted on slip-ring device on and will
Main body is held in a predetermined position place relative to slip-ring device；And pressure assembly, it can be in a manner that size be adjustable to master
Body applies pressure.
According to a preferred embodiment of the invention, pressure assembly includes elastic element and presses component, the peripheral surface of main body
Be provided with butting section, wherein, press component by means of elastic element against portion, pressure assembly by press press component and
Apply pressure to main body, so as to adjust the big of the pressure applied to main body according to component is pressed relative to the position of butting section
It is small.
According to a preferred embodiment of the invention, positioning component includes transverse plate and the longitudinal direction extended from one end of transverse plate
Plate, wherein, transverse plate is equipped with through-hole, and main body can wear the through-hole by transverse plate and be slided with the inner wall of the through-hole of transverse plate
Dynamic contact, and press component and be provided with opening, longitudinal plate wear by be open and with the inner wall sliding contact of opening.
According to a preferred embodiment of the invention, component is pressed as sliding block, and longitudinal plate is guide rail.
According to a preferred embodiment of the invention, it is provided with scale on guide rail.
Another aspect provides a kind of method for diagnosing faults of slip-ring device, the method for diagnosing faults include with
Lower step：Difference Ras of the all-in resistance R10 with compareing all-in resistance R20 is calculated according to the above method；Judge that slip ring fills according to difference Ra
It puts and whether breaks down.
According to a preferred embodiment of the invention, judge that the step of whether slip-ring device breaks down includes according to difference Ra：
If difference Ra is more than preset difference threshold, judge that slip-ring device breaks down.
Measuring method according to an embodiment of the invention and aided measurement device, can be by measuring between slideway and sliding needle
The incrementss of Static Contact resistance determine the degree of wear of slip-ring device.Slip-ring device according to an embodiment of the invention
Method for diagnosing faults can be to determine slip-ring device by the incrementss of the Static Contact resistance between Measurement channel and sliding needle
It is no to break down.
Description of the drawings
From below in conjunction with the accompanying drawings to the present invention may be better understood in the description of the specific embodiment of the present invention.Its
In, the same or similar reference numeral represents the same or similar feature.
Fig. 1 shows the structure diagram of slip-ring device.
Fig. 2 shows of the prior art for measuring the method for the degree of wear of slip-ring device.
The method that Fig. 3 shows the degree of wear according to an embodiment of the invention for being used to measure slip-ring device.
Fig. 4 is to show that aided measurement device according to an embodiment of the invention is installed to the stereogram of slip-ring device.
Fig. 5 is the stereogram for showing aided measurement device according to an embodiment of the invention.
Wherein：100- slip-ring devices；110- stationary parts；111- slideways；The first conducting wires of 112-；The first Hardings of 113- head is inserted
Needle；120- rotating parts；121- slides needle；The second conducting wires of 122-；The second Hardings of 123- head contact pin；130- housings；131- windows；
200- aided measurement devices；210- main bodys；211- first ends；212- the second ends；213- butting sections；220- positioning components；
221- protruding portions；222- transverse plates；223- longitudinal plates；230- pressure assemblies；231- presses component；232- elastic elements；310-
First probe；320- second pops one's head in；The first aided measurement devices of 400-；The second aided measurement devices of 500-.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.In the figure in order to clear
It is clear, it may be exaggerated the thickness of region and layer.Identical reference numeral represents same or similar structure in figure, thus will save
Slightly their detailed description.
<For measuring the method for the degree of wear of slip-ring device>
The method that Fig. 3 shows the degree of wear according to an embodiment of the invention for being used to measure slip-ring device.It hereinafter, will ginseng
According to Fig. 3, the measuring method of the degree of wear is described in detail.
In step sl, the first aided measurement device 400, the second aided measurement device 500, third subsidiary dress are provided
Put (not shown), the 4th aided measurement device (not shown), electric resistance measuring apparatus and original control slip-ring device.Resistance
Measuring device includes the first probe 310 and the second probe 320, and can be used in measuring the first probe 310 and the second probe 320
Between resistance.Electric resistance measuring apparatus is device well-known to those having ordinary skill in the art, and to simplify the explanation, in attached drawing
In, the first probe 310 and the second probe 320 of electric resistance measuring apparatus are illustrated only, other portions of electric resistance measuring apparatus are omitted
The diagram divided.It is identical with the structure of slip-ring device 100 to compare slip-ring device, and including the control slideway identical with slideway 111
Needle is slided in identical control with sliding needle 121.Here, original control slip-ring device refers to completely new slip-ring device.It is right
There is no any abrasion with compareing sliding needle according to slideway, to reject interference resistance components.
In step s 2, first probe 310 is electrically connected, and pass through with slideway 111 via the first aided measurement device 400
Second probe 320 is electrically connected with sliding needle 121 by the second aided measurement device 500.Preferably, the second probe 320 and sliding needle 121
It connects indirectly.Since sliding 121 material of needle is softer, the second probe 320 is directly sandwiched on sliding needle 121 easily to be caused to damage to sliding needle
It is bad.Therefore, sliding needle 121 is typically secured on metal derby, and the second probe 320 is by being clipped on metal derby and indirect with sliding needle 121
Contact.
In step s3, the first probe 310 and the second probe when slideway 111 keeps opposing stationary with sliding needle 121 are measured
All-in resistance R10 between 320, and all-in resistance R10 meets the following formula：
R10=R11+R12+R13+R14+R15+R16+R17+R18+R19,
Wherein, R11 is the contact resistance between the first probe 310 and the first aided measurement device 400；R12 is first auxiliary
Help the resistance of measuring device 400；R13 is the contact resistance between the first aided measurement device 400 and slideway 111；R14 is slideway
111 resistance；R15 is the contact resistance of slideway 111 and sliding needle 121；R16 is the resistance of sliding needle 121；R17 is sliding needle 121 and
Contact resistance between two aided measurement devices 500；R18 is the resistance of the second aided measurement device 500；And R19 is second
Contact resistance between the probe of aided measurement device 500 and second 320.
In step s 4, the first probe 310 is electrically connected with control slideway via third aided measurement device, and via
Second probe 320 is electrically connected by the 4th aided measurement device with control cunning needle, at the same ensure the first probe 310 and slideway 111 it
Between the sum of resistance and the resistance between the second probe 320 and sliding needle 121 be equal to the first probe 310 and compare the electricity between slideway
It hinders and the second probe 320 and compare the sum of the resistance between cunning needle, that is, ensure to meet the following formula：
R11+R12+R13+R14+R16+R17+R18+R19=R21+R22+R23+R24+R26+R27+ R28+R29, (2)
Wherein, R21 is the contact resistance between the first probe 310 and third aided measurement device；R22 is that third auxiliary is surveyed
Measure the resistance of device；R23 is third aided measurement device with compareing the contact resistance between slideway；R24 is the electricity for compareing slideway
Resistance；R26 is the resistance of the sliding needle of control；R27 is the contact resistance between the sliding needle of control and the 4th aided measurement device；R28 is
The resistance of four aided measurement devices；And R29 is the contact resistance between the 4th aided measurement device and the second probe 320.
In step s 5, it measures control slideway and is visited with compareing the first probe 310 and second when sliding needle keeps opposing stationary
Control all-in resistance R20 between first 320, and all-in resistance R20 meets the following formula：
R20=R21+R22+R23+R24+R25+R26+R27+R28+R29,
Wherein, R25 is to compare slideway with compareing the contact resistance of sliding needle.
In step s 6, all-in resistance R10 is calculated with compareing the difference Ra between all-in resistance R20, to determine slip-ring device
The degree of wear, wherein, Ra meets the following formula：
Ra=R10-R20=R17-R27.
Specifically, difference Ra refers to static state of the Static Contact resistance of slip-ring device 100 with compareing slip-ring device
Difference between contact resistance.By measuring the Static Contact resistance of slip-ring device relative to original control slip-ring device
Incrementss, it may be determined that the degree of wear of slip-ring device.
Compared with the measuring method of the prior art, measuring method according to the present invention, by using controlled can assisting
Measuring device rather than uncontrollable Harding head contact pin and conducting wire will pop one's head in and be connected with slideway and probe with sliding needle so that energy
The contact resistance between the component being connected with each other enough is controlled, so that it is guaranteed that meeting formula (2).Therefore, measurement according to the present invention
Method can obtain the incrementss of the Static Contact resistance of slip-ring device.In addition, measuring method according to the present invention, probe is with sliding
The quantity of component between road and between probe and sliding needle is reduced so that the quantity of the contact resistance of required control is also reduced.
Therefore, measuring method according to the present invention is fairly simple and can save the time.
According to an embodiment of the invention, which ensures to meet formula (2) by ensuring to meet the following formula：
R11=R21, (3)
It is visited that is, the contact resistance R11 between the first probe 310 and the first aided measurement device 400 is equal to first
Contact resistance R21 between first 310 and third aided measurement device.This can be by adjusting between probe and aided measurement device
Contact position, contact realizes.First probe 310 and the second probe 320 preferably clamp type.As long as ensure that first is auxiliary
Help measuring device 400 identical with third aided measurement device, position of the probe clip on aided measurement device is fixed and pressure
It is identical, then it may insure to meet formula (3).
According to an embodiment of the invention, which ensures to meet formula (2) by ensuring to meet the following formula：
R12=R22； (4)
R18=R28, (5)
That is, the first aided measurement device 400 is identical with the resistance of third aided measurement device, the second subsidiary
Device 500 is identical with the resistance of the 4th aided measurement device.It is particularly preferred that the first aided measurement device 400, second auxiliary is surveyed
Measure device 500, third aided measurement device and the 4th aided measurement device all same.
According to an embodiment of the invention, which ensures to meet formula (2) by ensuring to meet the following formula：
R13=R23； (6)
R17=R27, (7)
It is surveyed that is, the contact resistance R13 between the first aided measurement device 400 and slideway 111 is equal to third auxiliary
Device is measured with compareing the contact resistance R23 between slideway；Contact resistance between second aided measurement device 500 and sliding needle 121
R17 is equal to the 4th aided measurement device with compareing the contact resistance R27 between sliding needle.This can be by adjusting aided measurement device
Contact position, contact and contact angle between slideway between aided measurement device and sliding needle are realized.
According to an embodiment of the invention, which ensures to meet formula (2) by ensuring to meet the following formula：
R19=R29, (8)
It is visited that is, the contact resistance R19 between the second probe 320 and the second aided measurement device 500 is equal to second
First 320 and the 4th contact resistance R29 between aided measurement device.This can be by adjusting between probe and aided measurement device
Contact position, contact realizes.First probe 310 and the second probe 320 preferably clamp type.As long as ensure that second is auxiliary
Help measuring device 500 identical with the 4th aided measurement device, position of the probe clip on aided measurement device is fixed and pressure
It is identical, then it may insure to meet formula (8).
According to an embodiment of the invention, which meets all in formula (3), (4), (5), (6), (7) and (8)
Formula.Further, since the resistance R14 of slideway 111 is identical with the resistance R24 for compareing slideway, and due to the resistance of sliding needle 121
R16 is identical with the resistance R26 of the sliding needle of control, therefore meets the following formula：
R14=R24； (9)
R16=R26, (10)
Due to having met formula (3), (4), (5), (6), (7), (8), (9) and (10), therefore may insure to meet public
Formula (2).In this way, contact position, contact and the contact angle between the component being connected to each other only need to simply be adjusted
Degree, it is possible to ensure to meet formula (2).Therefore, the measuring method is easy to operate.
<Aided measurement device>
Fig. 4 is to show that aided measurement device according to an embodiment of the invention is installed to the stereogram of slip-ring device 100, and
And Fig. 5 is the stereogram for showing aided measurement device according to an embodiment of the invention.In the following, with reference to Fig. 4 and Fig. 5, to basis
The aided measurement device of the embodiment of the present invention is described in detail.It should be appreciated that following aided measurement devices 200 can be used
Make the first aided measurement device 400, the second aided measurement device 500, third aided measurement device and the 4th aided measurement device.
With reference to Fig. 4, slip-ring device 100 includes housing 130.Aforementioned sliding needle 121 and slideway 111 are located in the housing, and
Window 131 is offered on housing.Window 131 is used for the inside that operator is made to access slip-ring device 100, in order to measure and safeguard
Deng.Preferably, window 131 is rectangular shape.Aided measurement device 200 is mountable on slip-ring device 100 and by this
Window 131 is electrically connected with slideway 111, sliding needle 121, control slideway and the sliding needle of control.
With reference to Fig. 5, aided measurement device 200 includes main body 210, positioning component 220 and pressure assembly 230.According to this hair
Bright embodiment, main body 210 include first end 211 and the second end 212 opposite with the first end 211.Wherein, first
End 211 can with slideway 111, compare slideway, sliding needle 121 or the sliding needle of control and be in contact, and the second end 212 can be with electricity
First probe 310 of resistance measuring device or the second probe 320 are connected.Specifically, when aided measurement device is auxiliary as first
When helping measuring device, the first end 211 of main body 210 can be in contact, and 212 energy of the second end of main body 210 with sliding needle
It is enough to be connected with the first probe 310 of electric resistance measuring apparatus, so that main body 210 can be by the first probe 310 and sliding needle electricity
Connection；When aided measurement device is used as the second aided measurement device, first end 211 can be in contact with slideway, and the
Two ends 212 can be in contact with the second probe 320, so that the second probe 320 can be electrically connected by main body 210 with slideway
It connects；When aided measurement device is used as third aided measurement device, first end 211 can be in contact with compareing sliding needle, and
The second end 212 can be in contact with the first probe 310, so that main body 210 can be by the first probe 310 with compareing sliding needle
Electrical connection；And when aided measurement device is used as four aided measurement devices, first end 211 can connect with compareing slideway
Touch, and the second end 212 320 can be in contact with the second probe so that main body 210 can by the second probe 320 with
Compare slideway electrical connection.
According to an embodiment of the invention, main body 210 is configured to connecting rod.Preferably, which is cylindrical connecting rod.
Positioning component 220 can be mounted on slip-ring device 100 and keep main body 210 relative to slip-ring device 100
In pre-position, so as to ensure main body 210 and slideway 111, sliding needle 121, the contact position for compare slideway and control cunning needle and
Contact angle.Specifically, be provided with through-hole on positioning component 220, main body 210 can wear by the through-hole and with through-hole
Inner wall sliding contact so that main body 210 is moved back and forth along scheduled direction.For example, main body 210 is reciprocal along the axial direction of through-hole
It is mobile.
Pressure assembly 230 can apply pressure in a manner that size is adjustable to main body 210, to adjust main body 210 with sliding
Road 111, main body 210 and sliding needle 121, main body 210 and the contact for compareing slideway and main body 210 with compareing sliding needle.
It according to an embodiment of the invention, can be by adjusting above-mentioned contact position, contact and contact angle, to ensure
R13=R23；R17=R27.That is, the contact resistance R13 between the first aided measurement device 400 and slideway 111 is equal to
Third aided measurement device is with compareing the contact resistance R23 between slideway；Between second aided measurement device 500 and sliding needle 121
Contact resistance R17 be equal to the 4th aided measurement device with compare cunning needle between contact resistance R27.
According to an embodiment of the invention, pressure assembly 230 includes elastic element 232 and presses component 231.Main body 210
Peripheral surface is provided with butting section 213, and presses component 231 by means of elastic element 232 against portion 213.Press portion
Part 231 be equipped with through-hole, main body 210 can wear by through-hole and with the inner wall sliding contact of the through-hole so that press component
231 move back and forth along the axial direction of main body 210.Preferably, elastic element 232 is spring, and main body 210 is worn in the spring.
Preferably, component 231 is pressed to be fixedly connected with elastic element 232.Preferably, butting section 213 is the outer weekly form around main body 210
The annular flange of face setting.It will be appreciated, however, that butting section 213 can also be other constructions.For example, butting section 213 is interval
Ground is arranged on several protrusions of 210 peripheral surface of main body.Pressure assembly 230 is configured to by pressing component 231
And apply pressure to main body 210, so as between main body 210 and slideway 111, between main body 210 and sliding needle 121, main body 210 with
Control slideway between and main body 210 with compare cunning needle between generate contact.The pressure assembly 230 can be according to pressing component
231 adjust the size of the pressure applied to main body 210 relative to the position of butting section 213.
According to an embodiment of the invention, compared with pressing component 231, butting section 213 is closer to the first end of main body 210
211。
It should be appreciated by those skilled in the art to main body 210 as long as can apply the power of predefined size, pressure assembly
230 can be any other component.
According to an embodiment of the invention, positioning component 220 extends including transverse plate 222 and from one end of transverse plate 222
Longitudinal plate 223.Transverse plate 222 is equipped with through-hole, and the first end 211 of main body 210 can wear through the through-hole and lead to this
Hole sliding contact.Preferably, the extending direction of longitudinal plate 223 is parallel with the axial direction of the through-hole of transverse plate 222.Preferably, it is horizontal
It is perpendicular to plate 222 and longitudinal plate 223.
According to an embodiment of the invention, it pressing component 231 and is equipped with opening, longitudinal plate 223 can be worn through the opening,
It is slided so that pressing component 231 relative to longitudinal plate 223.The first end 211 of the constraint main body 210 of transverse plate 222, and longitudinal plate
223 constrain the second end 212 of main body 210 by pressing component 231 indirectly.The setting of transverse plate 222 and longitudinal plate 223 is true
It protects main body 210 only to move back and forth along scheduled direction, the second end for preventing from transverse plate 222 is separately provided and causing main body 210
212 shake, so as to prevent main body 210 from changing with slideway, the contact angle for compareing slideway, sliding needle or compareing sliding needle.
It should be appreciated by those skilled in the art as long as so that main body 210 and slideway, compareing slideway, sliding needle or control and sliding
The contact position and contact angle of needle are fixed, and positioning component 220 could be provided as other constructions.For example, main body 210 can be set
For block structure.The block structure is equipped with through-hole, and main body 210 can be worn through the through-hole.Block structure is constructed so as to lead to
Hole has enough length so that main body 210 is only moved along the axial direction of through-hole, and the first end of main body 210 and second
End will not shake.Thereby it is ensured that main body 210 and slideway, the contact angle for compareing slideway, sliding needle or compareing sliding needle.
According to an embodiment of the invention, the opposite sides of transverse plate 222 is provided with protruding portion 221, and protruding portion 221 can be taken
It is located on the housing of 131 periphery of window, so that positioning component 220 is ridden upon on window 131.The first end of main body 210
211 are inserted into window 131, pass through the position of running fix component 220 so that main body 210 is relative to slideway, control slideway, cunning
Needle or the sliding needle of control move.
According to an embodiment of the invention, longitudinal plate 223 is the guide rail extended along predetermined direction, presses component 231 as sliding block
And it can be slided along guide rail.
According to an embodiment of the invention, it is provided with scale on guide rail.It is measuring slip-ring device 100 and is measuring control slip ring dress
When putting, identical graduation is maintained at by making to press component 231, to ensure that the contact measured twice is identical.According to the present invention
Embodiment, can be at the correspondence scale of guide rail, welded limiting metal derby is maintained at when pressing component 231 at predetermined graduated
When, the limiting metal derby on guide rail, which prevents from pressing component 231, to be moved, to increase the convenience of operation and accuracy.
<The method for diagnosing faults of slip-ring device>
In the following, the method for diagnosing faults of slip-ring device according to the present invention is described in detail.The method for diagnosing faults
Include the following steps：According to above step S1)-S6) calculate difference Ras of the all-in resistance R10 with compareing all-in resistance R20；According to
Difference Ra judges whether slip-ring device breaks down.Judge slip-ring device according to the incrementss of Static Contact resistance obtained
Whether break down, realize the malfunction monitoring to slip-ring device, avoid because caused by the abrasion between sliding needle and slideway
Security risk.Due to passing through the step S1 of the present invention)-S6) the Static Contact resistance of slip-ring device can be precisely measured out
Incrementss, therefore improve the accuracy of the fault diagnosis of slip-ring device.
According to an embodiment of the invention, judge that the step of whether slip-ring device breaks down includes according to difference Ra：If
Difference Ra then judges that slip-ring device breaks down more than preset difference threshold.
<Other embodiment>
According to an embodiment of the invention, although describing by meeting formula (3), (4), (5), (6), (7) and (8) come really
Guarantor meets the embodiment of formula (2).But as long as meeting formula (2), the present invention is not limited to these embodiments.For example, conduct
Formula (3) and the replacement of (8), the measuring method can also meet R11=R29；R19=R21.That is, the first probe 310
Contact resistance R11 between the first aided measurement device 400 is equal between the second probe 320 and the 4th aided measurement device
Contact resistance R29；Contact resistance R19 between second probe 320 and the second aided measurement device 500 is equal to the first probe 310
Contact resistance R21 between third aided measurement device.This can be by ensuring the first probe 310 and the second 320 phases of probe
Together, and probe is realized with the contact position between corresponding aided measurement device and contact all same.
According to an embodiment of the invention, although describing aided measurement device includes main body, positioning component and pressure assembly
Embodiment, but those skilled in the art is it should be appreciated that the present invention is not limited thereto.As long as ensure probe and slideway electricity
It connects and is electrically connected probe with sliding needle, aided measurement device can be any construction.For example, aided measurement device 200 is
Conducting wire.
<Commercial Application>
It is according to an embodiment of the invention to be filled for measuring the method for the degree of wear of slip-ring device 100 and subsidiary
It puts and can be applied to technical field of wind power, and specifically, apply in wind-driven generator.In this case, slip-ring device 100
For wind-power slip ring.The rotating part 120 of slip-ring device 100 is connected with the wheel hub of wind-driven generator, and slip-ring device 100
Stationary part 110 is connected with the cabin of wind-driven generator, and the power line in cabin and connection are transmitted in wheel hub, from
And transmit electric energy and electric signal etc..
In addition, measuring method according to the present invention and aided measurement device can also be applied to rotating device with consolidating
Determine the other field of device connection.Slip-ring device 100 can be fluid slip ring or smooth ring etc..
While the invention has been described with reference to exemplary embodiments thereof, however, it is understood that the present invention is not limited to above-mentioned realities
Apply the construction and method of example.On the contrary, it is intended to cover various modifications example and equivalent arrangements.In addition, although in various examples
Property combination and construction in show the various elements and method and step of disclosed invention, but including more, less element
Or other combinations of method are also fallen within the scope of the present invention.
Claims (10)
1. one kind is used for the method for measuring the degree of wear of slip-ring device (100), wherein, the slip-ring device (100) is including cunning
Road (111) and sliding needle (112), annularly, the sliding needle (112) can surround in the slideway (111) slideway (111)
Mandrel line rotates and is in contact and is electrically connected with the slideway (111), the described method comprises the following steps：
S1) first aided measurement device (400), the second aided measurement device (500), third aided measurement device, the 4th are provided
Aided measurement device, electric resistance measuring apparatus and original control slip-ring device, wherein, the electric resistance measuring apparatus includes the
One probe (310) and second pops one's head in (320) and can be used in measuring first probe (310) and the described second probe
(320) resistance between, it is described control slip-ring device it is identical with the structure of the slip-ring device (100) and including with the cunning
Needle is slided in the identical control slideway in road (111) and the control identical with the sliding needle (112)；
S2) the described first probe (310) is electrically connected with the slideway (111) via first aided measurement device (400),
And the described second probe (320) is electrically connected with the sliding needle (112) via second aided measurement device (500)；
S3 first probe (310) and the institute when slideway (111) keeps opposing stationary with the sliding needle (112)) are measured
State the all-in resistance R10 between the second probe (320)；
S4) the described first probe (310) is electrically connected, and with the slideway that compares via the via third aided measurement device
Described second probe (320) is electrically connected by four aided measurement devices with the sliding needle of the control, while ensures first probe
(310) resistance between the resistance between the slideway (111) and the second probe (320) and the sliding needle (112) it
And it pops one's head in (320) and described compares with described second equal to the resistance between the described first probe (310) and the control slideway
The sum of resistance between sliding needle；
S5) measure the control slideway with it is described compare sliding needle holding it is opposing stationary when described first pop one's head in (310) with it is described
Control all-in resistance R20 between second probe (320)；And
S6 the all-in resistance R10 and the difference Ra for compareing all-in resistance R20) are calculated, to determine the slip-ring device (100)
The degree of wear.
2. according to the method described in claim 1, wherein, in step S4) in, it is ensured that meet the following formula：
R13=R23 and R17=R27,
Wherein, R13 is the contact resistance between first aided measurement device (400) and the slideway (111),
R23 is the third aided measurement device and the contact resistance compareed between slideway,
R17 be contact resistance between second aided measurement device (500) and the sliding needle (112) and
R27 is the 4th aided measurement device and the contact resistance compareed between sliding needle.
3. according to the method described in claim 2, wherein, first aided measurement device (400), second subsidiary
Device (500), the third aided measurement device is identical with the 4th aided measurement device and includes：
Described first probe (310) with the slideway (111) can be electrically connected, described second pops one's head in by main body (210)
(320) it is electrically connected with the sliding needle (112), is electrically connected the described first probe (310) and by described in the control slideway
Second probe (320) is electrically connected with the sliding needle of the control；
Positioning component (220) can be mounted on the slip-ring device (100) and by the main body (210) relative to institute
It states slip-ring device (100) and is held in a predetermined position place, so as to keep the main body (210) and the slideway (111), the main body
(210) with the sliding needle (112), the main body (210) with slideway and the main body (210) of compareing sliding needle is compareed with described
Contact position and contact angle；And
Pressure assembly (230) can apply pressure, with described in adjusting in a manner that size is adjustable to the main body (210)
Between main body (210) and the slideway (111), between the main body (210) and the sliding needle (112), the main body (210) with
Between the control slideway and the main body (210) and the contact for compareing sliding needle, wherein
By adjusting contact position, contact and contact angle, to ensure R13=R23 and R17=R27.
4. a kind of aided measurement device, the aided measurement device is electric for the Static Contact of subsidiary slip-ring device (100)
Resistance, the aided measurement device include：
Electric resistance measuring apparatus and the slip-ring device (100) are electrically connected by main body (210)；
Positioning component (220), which is provided with through-hole, and the main body (210) wears the through-hole by positioning component (220) and with determining
The inner wall sliding contact of the through-hole of hyte part (220) and cause the main body (210) moved along scheduled direction, and described
Positioning component (220) can be mounted on the slip-ring device (100) and be filled by the main body (211) relative to the slip ring
It puts (100) and is held in a predetermined position place；And
Pressure assembly (230) applies pressure in a manner that size is adjustable to the main body (210).
5. aided measurement device according to claim 4, wherein, the pressure assembly (230) includes elastic element (232)
With press component (231), the peripheral surface of the main body (210) is provided with butting section (213), wherein, it is described to press component
(231) by means of the elastic element (232) against the butting section (213), the pressure assembly (230) is by described in pressing
It presses component (231) and applies pressure to the main body (210), thus according to the component that presses relative to the butting section
(213) position adjusts the size of the pressure applied to the main body (210).
6. aided measurement device according to claim 5, wherein, the positioning component (220) including transverse plate (222) and
The longitudinal plate (223) extended from one end of the transverse plate (222), wherein, the transverse plate (222) is equipped with through-hole, described
Main body (210) can wear the through-hole by the transverse plate (222) and be slided with the inner wall of the through-hole of the transverse plate (222)
Contact, and the component (231) that presses is provided with opening, the longitudinal plate (223) wear by it is described be open and with it is described
The inner wall sliding contact of opening.
7. aided measurement device according to claim 6, wherein, the component (231) that presses is sliding block, and described vertical
It is guide rail to plate (223).
8. aided measurement device according to claim 7, wherein, it is provided with scale on the guide rail.
9. a kind of method for diagnosing faults of slip-ring device, the method for diagnosing faults include the following steps：
Difference Ras of the all-in resistance R10 with compareing all-in resistance R20 is calculated according to the method in any one of claims 1 to 3；Root
Judge whether the slip-ring device (100) breaks down according to the difference Ra.
10. according to the method described in claim 9, wherein, judge whether the slip-ring device (100) is sent out according to the difference Ra
The step of raw failure, includes：
If the difference Ra is more than preset difference threshold, judge that the slip-ring device (100) breaks down.
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| CN201611234615.6A CN108253997B (en) | 2016-12-28 | 2016-12-28 | Method for measuring wear degree of slip ring device, fault diagnosis method and auxiliary measuring device |
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| CN108253997B (en) | 2020-10-30 |
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