CN103234441A - Contact wire abrasion detecting device - Google Patents
Contact wire abrasion detecting device Download PDFInfo
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- CN103234441A CN103234441A CN2013101208464A CN201310120846A CN103234441A CN 103234441 A CN103234441 A CN 103234441A CN 2013101208464 A CN2013101208464 A CN 2013101208464A CN 201310120846 A CN201310120846 A CN 201310120846A CN 103234441 A CN103234441 A CN 103234441A
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- shell
- differential transformer
- conducting wire
- contact line
- gripper clamp
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Abstract
A contact wire abrasion detecting device comprises a shell, clamp pliers, a stepping motor, a lifting block, a differential transformer and a horizontal drive shaft, wherein the lifting block, the differential transformer and the horizontal drive shaft are located in the shell. Lowers ends of two L-shaped plier arms of the clamp pliers are hinged with the shell. The lifting block is slidably connected with the shell through a vertical guide column and provided with two protrusions corresponding to the two plier arms. The differential transformer is slidably connected with the lifting block through a vertical slideway. A detecting contact of the differential transformer corresponds to a contact wire in a jaw of the clamp pliers. The drive shaft is connected with the shell through a bearing and provided with a detecting cam corresponding to the differential transformer and a lifting cam corresponding to the lifting block. The stepping motor is fixedly connected with the shell. An output shaft of the stepping motor is in butt joint with the drive shaft. Output of the differential transformer is connected with a measuring control system. The contact wire abrasion detecting device is convenient to operate, reliable in operation, high in detecting efficiency and precision, capable of satisfying the requirements for electric railway abrasion detection and the like.
Description
Technical field
The present invention relates to a kind of intelligent lead abrasion detection equipment that is applicable to contact nets in electrified railways, belong to the detection technique field.
Background technology
Contact net is the transmission line of electricity of the special shape of setting up along the railway line sky, and its osculatory (referring to Fig. 1) provides lasting, reliable electric energy by contacting with block of bow collector of electric locomotive direct to locomotive.When the excessive wear of the bottom of contact line conducting wire (referring to Fig. 2), just can't normal power supply.Guarantee the electric locomotive reliability service, need carry out periodic measurement to the wear extent of osculatory.
Traditional metering system is directly to hang on the high-tension bus-bar (osculatory) of 27KV after several shapes are coupled together like the insulating bar of " fishing rod ", and makes it sagging naturally, measures by ruler and conversion draws contact net leads height and stagger again.This method safety coefficient is little, degree of accuracy is poor, and it is low to measure efficient, and measurement space is limited, measurement parameter is less, does not satisfy the needs of China's electric railway fast development far away.
At present, the detection method that adopts of external contact line conducting wire wear detecting system mainly contains image detection method, laser scanning method, residual high measurement method three major types.The image detection method is to utilize high-speed camera to gather the contact picture picture, obtains lead wear surface width value by Digital Image Processing; Laser scanning method is to utilize to scan whole contact wire through rotating mirror laser light reflected Shu Fanfu, and utilizes electrooptical device to receive by lead wear surface laser light reflected, analyzes the abrasion condition of contact wire according to reflected light; Residual high measurement method is at the pantograph two ends laser beam to be installed respectively to transmit and receive device, when the sheet collimated laser beam that the laser beam emitter is launched shines conductor side, part laser is blocked, so the signal received of laser receiver has directly reflected the residual high value of lead.These detection methods are easy to operate, and safety is convenient, and shortcoming is that the detection cost is higher, and measuring accuracy is subjected to certain limitation.
Therefore, detect the wearing and tearing of current each anchor point of each overlap and span centre lead how easily and fast, exactly, become the difficult problem that the relevant technologies personnel face.
Summary of the invention
The objective of the invention is to the drawback at prior art, a kind of contact line conducting wire wear detector is provided, to reduce the operation easier of contact line conducting wire abrasion detection, improve detection efficiency and accuracy of detection.
Problem of the present invention realizes with following technical proposals:
A kind of contact line conducting wire wear detector, it comprise the bottom be connected with the shell of insulating bar, be positioned at shell top gripper clamp, be fixed on the stepper motor on the side wall of outer shell and be positioned at lifting piece, horizontal drive shaft, differential transformer and the Measurement and Control System of shell; Lower end and the shell of two L type tong arms of described gripper clamp are hinged; Described lifting piece is slidingly connected by vertical guidepost and shell, its be provided with two respectively with two plush coppers that tong arm is corresponding of gripper clamp; Described differential transformer is slidingly connected by vertical slideway and lifting piece, and its detection contact is stretched out shell and corresponding with the contact line conducting wire in the gripper clamp jaw; Described driving shaft is positioned at lifting piece below and is connected with shell by bearing, and it is provided with corresponding with differential transformer and lifting piece respectively detection cam and lifting cam; Described stepper motor and shell are affixed, and its output shaft docks with driving shaft; The output of differential transformer connects Measurement and Control System.
Above-mentioned contact line conducting wire wear detector, the outside of two tong arms of described gripper clamp is connected with shell through two gripper clamp back-moving springs respectively, is provided with the differential transformer back-moving spring between described differential transformer and the shell roof.
Above-mentioned contact line conducting wire wear detector also comprises two swallow-tail form guide plates that are fixed on the shell in the formation, the two lays respectively at the gripper clamp both sides, is provided with proximity transducer in the direction recess bottom of every guide plate.
Above-mentioned contact line conducting wire wear detector detects between cam and the driving shaft, is key between lifting cam and the driving shaft and is connected, is provided with sleeve between detection cam and lifting cam.
Above-mentioned contact line conducting wire wear detector, shell is provided with display, the input termination Measurement and Control System of described display.
The present invention utilizes gripper clamp contact line conducting wire locking back recycling differential transformer to be detected the wearing and tearing of each overlap anchor point and span centre lead, have easy to operate, reliable operation, detection efficiency and accuracy of detection advantages of higher, can satisfy the needs of electric railway fast development.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the cross sectional representation of normal contact line conducting wire;
Fig. 2 is the cross sectional representation of the contact line conducting wire after the wearing and tearing;
Fig. 3 is outside drawing of the present invention;
Fig. 4 is the structural representation that removes behind the shell side plate;
Fig. 5 is original state synoptic diagram of the present invention;
Fig. 6 is the state when clamping contact line conducting wire;
Fig. 7 is differential transformer initial position synoptic diagram;
Fig. 8 is the detected state synoptic diagram of differential transformer;
Fig. 9 is the side view of gripper clamp and differential transformer;
Figure 10 is the vertical view of gripper clamp and differential transformer;
Figure 11 is the connection diagram of stepper motor and driving shaft;
Figure 12 is Measurement and Control System theory of constitution figure.
Each list of reference numerals is among the figure: 1, Measurement and Control System outer cover, 2, the gripper clamp back-moving spring, 3, gripper clamp, 4, guide plate, 5, stepper motor guard shield, 6, shell, 7, the insulating bar joint, 8, display, 9, detection contact, 10, orienting lug, 11, the differential transformer back-moving spring, 12, detect cam, 13, the lifting cam, 14, driving shaft, 15, lifting piece, 16, differential transformer, 17, guidepost, 18, contact line conducting wire, 19, sleeve, 20, bearing; 21, stepper motor, 22, insulating bar.
Embodiment
As shown in Figure 1, the xsect of contact line conducting wire to be detected is an irregular cycle, and both sides, top breach is for the hoist cable use that is installed.Wearing part is the bottom of lead, and during the contact line conducting wire excessive wear (as shown in Figure 2), the too little meeting of conductor cross-section causes the current density that flows through too big, thereby accidents caused.
Referring to Fig. 3～Figure 11, this device comprises Measurement and Control System, gripper clamp back-moving spring 2, gripper clamp 3, guide plate 4, shell 6, insulating bar joint 7, display 8, orienting lug 10, differential transformer back-moving spring 11, detects cam 12, lifting cam 13, driving shaft 14, lifting piece 15, differential transformer 16, guidepost 17, sleeve 19, bearing 20, stepper motor 21, insulating bar 22.
Be provided with 4.5 meters long insulating bars 22 in the bottom of shell 6, detect the contact line conducting wire in high-altitude, 6 meters left and right sides to make things convenient for the workman.For being convenient for carrying, insulating bar 22 is divided into three sections, and there is screw thread at every section two ends, can be connected in series with shell 6 and other insulating bar easily by adapter sleeve.
Because general high aerial suspension the about 6 meters of contact line conducting wire 18, operating personnel need lift pick-up unit with insulating bar 22, have only after contact line conducting wire 18 is included into the jaw of gripper clamp 3 and just can detect.Yet the jaw size of gripper clamp 3 is less, and terrestrial operation personnel's sight line is subjected to the influence of shell 6 again, and is not easy to operate, so designed two guide plates 4 at shell 6, and to improve detection efficiency.Guide plate 4 is the swallow-tail form frid, is arranged in parallel in the both sides on shell 6 tops, and the size of its groove is slightly larger than the diameter of contact line conducting wire 18.Be installed with proximity transducer in groove floor, when contact line conducting wire 18 is included into the groove of guide plate 4, two sensor senders, the notice Measurement and Control System can begin to detect.
Referring to Fig. 5, when the present invention was in original state, the bottom of lifting piece 15 was supported on the least radius limit of lifting cam 13, and under the effect of gripper clamp back-moving spring 2, the jaw of gripper clamp 3 opens, and lifting piece 15 is positioned at the least significant end of stroke.Enter the groove of guide plate 4 when contact line conducting wire 18 after, the proximity transducer sender, driving shaft 14 drive lifting cams 13 clockwise rotate then, move up along guidepost 17 thereby drive lifting piece 15, make gripper clamp 3 moving around the hinging pin shaft transhipment.After the rotation through 90 degree, the maximum radius limit of lifting cam 13 begins to contact the base of lifting piece 15, the jaw closure of gripper clamp 3, in 180 degree scopes subsequently, lifting cam 13 holds up lifting piece 15 with maximum radius always, make that during this period of time the jaw of gripper clamp 3 is in closure state always, as shown in Figure 6, for the wearing and tearing that detect contact line conducting wire 18 bottoms provide guarantee.After detection finished, driving shaft 14 drove lifting cam 13 and is rotated further, in the rotary course of these 90 degree, because the effect of gripper clamp back-moving spring 2, the jaw of gripper clamp 3 opens, and lifting piece 15 comes back to the least significant end of stroke, thereby finishes a working cycle.
Referring to Fig. 7, when gripper clamp is in open configuration, the least radius limit of lifting cam 13 be positioned at cam directly over, with the least radius limit of the coaxial detection cam 12 of lifting cam 13 also be positioned at cam directly over, by detecting the lowermost end that differential transformer 16 that cam 12 supports is in stroke, this moment, the detection contact 9 of differential transformer 16 did not touch contact line conducting wire 18 to be detected.Along with the rotation of lifting cam 13, the jaw closure of gripper clamp 3 is also rotated and detect cam 12 simultaneously thereupon.The rotational angle of lifting cam 13 from 90 degree in the scopes of 270 degree, jaw is closed always.And the rotational angle that detects cam 12 from 90 degree in the scopes of 180 degree, detect cam 12 with differential transformer 16 jack-up to the extreme higher position, as shown in Figure 8.The detection contact 9 of differential transformer 16 is withstood in the compressed housing that enters differential transformer 16 in contact line conducting wire 18 back, the compressed displacement of this detection contact 9 is relevant with the wear extent of contact line conducting wire 18 bottoms, just can converse the wear extent of contact line conducting wire 18 bottoms by the displacement of measuring and calculating detection contact 9.Spend in the scopes of 270 degree from 180 at the rotational angle that detects cam 12, owing to detect the effect of back-moving spring 12, differential transformer 16 moves downward, and is compressed into the ejection that resets again under the effect of enclosure interior spring of detection contact 9 in the differential transformer housing simultaneously.Driving shaft 14 is rotated further then, and system resets.
Referring to Figure 10, the lifting of differential transformer 16 is positioned by orienting lug 10, and a side of orienting lug 10 is fixed together by two screws and differential transformer 16, and opposite side slides in the vertical dovetail groove of lifting piece 15.Fig. 9 is the side view of gripper clamp and differential transformer, also can reflect above-mentioned relation, and this structure makes pick-up unit compacter, and the weight of instrument is lighter.
Referring to Figure 11, this device adopts 42BYGH202 type stepper motor, is equipped with SH-20403 type two-phase hybrid stepping motor subdivision driver, for the rotation of two cams provides power.Rotating speed and the corner of stepper motor 21 are adjustable, and the cumulative errors of whole circle rotation are zero, are fit to very much the requirement of this pick-up unit.Because the motor shaft diameter is thinner, so motor shaft is directly stretched into an end of driving shaft 14 and fix with marking closely screw.The other end of driving shaft 14 is supported on the shell 6 with bearing 20, and two cams all obtain power by key from driving shaft 14, and also is fixed on the driving shaft 14 with marking closely screw respectively.In order to ensure the spacing of two cams, specially between two cams, increased a sleeve 19.
The composition of Measurement and Control System is chosen single chip computer AT 89C2051 as shown in figure 12 as the control core, and system shows and the demand of signal input in order to satisfy, and has expanded the chip 8279 and the mould/number conversion chip AD574 that are exclusively used in demonstration.
The course of work of system is as follows:
1. proximity transducer sends the switching value signal after receiving contact line conducting wire signal in place, sends into single-chip microcomputer after photoelectricity is isolated;
2. single-chip microcomputer sends the continuous impulse signal after receiving signal, sends into stepper motor driver after isolating by photoelectricity, drives stepper motor and presses initialize program rotation predetermined angular;
3. in the stepper motor rotary course, differential transformer detects the abrasion condition of contact line conducting wire and produces the corresponding simulating signal and is input to Measurement and Control System, this simulating signal is converted to digital signal by A/D converter and sends into single-chip microcomputer through after the power amplification;
4. single-chip microcomputer is handled digital signal, and record data are presented at information on the light-emitting diode display by 8279 on the other hand on the one hand, reads for operating personnel;
5. behind full 360 degree of stepper motor rotation, one-time detection is finished in the stall of Single-chip Controlling motor.
This pick-up unit has alleviated labor intensity of operating personnel, has improved the reliability of system, and helps to reduce production and the handling cost of enterprise, possesses very high practical and popularizing value.
Claims (5)
1. contact line conducting wire wear detector, it is characterized in that, it comprise the bottom be connected with the shell of insulating bar (22) (6), be positioned at shell (6) top gripper clamp (3), be fixed on the stepper motor (21) on shell (6) sidewall and be positioned at lifting piece (15), horizontal drive shaft (14), differential transformer (16) and the Measurement and Control System of shell (6); Lower end and the shell (6) of two L type tong arms of described gripper clamp (3) are hinged; Described lifting piece (15) is slidingly connected by vertical guidepost (17) and shell (6), its be provided with two respectively with two plush coppers that tong arm is corresponding of gripper clamp (3); Described differential transformer (16) is slidingly connected by vertical slideway and lifting piece (15), and its detection contact (9) is stretched out shell (6) and corresponding with the contact line conducting wire (18) in gripper clamp (3) jaw; Described driving shaft (14) is positioned at lifting piece (15) below and is connected with shell (6) by bearing (20), and it is provided with corresponding with differential transformer (16) and lifting piece (15) respectively detection cam (12) and lifting cam (13); Described stepper motor (21) is affixed with shell (6), and its output shaft docks with driving shaft (14); The output of differential transformer connects Measurement and Control System.
2. a kind of contact line conducting wire wear detector according to claim 1, it is characterized in that, the outside of two tong arms of described gripper clamp (3) is connected with shell (6) through two gripper clamp back-moving springs (2) respectively, is provided with differential transformer back-moving spring (11) between described differential transformer (16) and shell (6) roof.
3. a kind of contact line conducting wire wear detector according to claim 1 and 2, it is characterized in that, also comprise the two swallow-tail form guide plates (4) that are fixed on the shell (6) in the formation, the two lays respectively at gripper clamp (3) both sides, is provided with proximity transducer in the direction recess bottom of every guide plate (4).
4. a kind of contact line conducting wire wear detector according to claim 3, it is characterized in that, detect between cam (12) and the driving shaft (14), be key between lifting cam (13) and the driving shaft (14) and be connected, between detection cam (12) and lifting cam (13), be provided with sleeve (19).
5. a kind of contact line conducting wire wear detector according to claim 4 is characterized in that, shell (6) is provided with display (8), the input termination Measurement and Control System of described display (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120846.4A CN103234441B (en) | 2013-04-09 | 2013-04-09 | A kind of contact line conducting wire wear detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120846.4A CN103234441B (en) | 2013-04-09 | 2013-04-09 | A kind of contact line conducting wire wear detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103234441A true CN103234441A (en) | 2013-08-07 |
| CN103234441B CN103234441B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310120846.4A Expired - Fee Related CN103234441B (en) | 2013-04-09 | 2013-04-09 | A kind of contact line conducting wire wear detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN103234441B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315984A (en) * | 2014-10-31 | 2015-01-28 | 中国神华能源股份有限公司 | Method and system for measuring abrasion of railway contact line |
| CN106052538A (en) * | 2016-06-23 | 2016-10-26 | 国家电网公司 | On-line state diagnosis device and method for water turbine unit shafting power system |
| CN108204931A (en) * | 2018-01-15 | 2018-06-26 | 中铁检验认证中心 | Contact line alternating bending test fail-ure criterion system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060711A (en) * | 1990-10-03 | 1992-04-29 | 弗朗茨普拉瑟尔铁路机械工业有限公司 | Check the machinery that contact line conducting wire is used |
| DE19634060C1 (en) * | 1996-08-23 | 1998-01-22 | Fraunhofer Ges Forschung | Over-head wire supervision arrangement for electrically operated vehicle |
| US20090217544A1 (en) * | 2008-02-28 | 2009-09-03 | Niles Martin S | Hot stick with measuring calipers |
| CN102288142A (en) * | 2011-05-13 | 2011-12-21 | 杨维雄 | Contact wire online automatic detecting system device |
-
2013
- 2013-04-09 CN CN201310120846.4A patent/CN103234441B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060711A (en) * | 1990-10-03 | 1992-04-29 | 弗朗茨普拉瑟尔铁路机械工业有限公司 | Check the machinery that contact line conducting wire is used |
| DE19634060C1 (en) * | 1996-08-23 | 1998-01-22 | Fraunhofer Ges Forschung | Over-head wire supervision arrangement for electrically operated vehicle |
| US20090217544A1 (en) * | 2008-02-28 | 2009-09-03 | Niles Martin S | Hot stick with measuring calipers |
| CN102288142A (en) * | 2011-05-13 | 2011-12-21 | 杨维雄 | Contact wire online automatic detecting system device |
Non-Patent Citations (1)
| Title |
|---|
| 陈小强等: "交流接触网导线带电磨耗检测仪", 《重庆大学学报》, vol. 32, no. 8, 31 August 2009 (2009-08-31), pages 975 - 978 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315984A (en) * | 2014-10-31 | 2015-01-28 | 中国神华能源股份有限公司 | Method and system for measuring abrasion of railway contact line |
| CN106052538A (en) * | 2016-06-23 | 2016-10-26 | 国家电网公司 | On-line state diagnosis device and method for water turbine unit shafting power system |
| CN106052538B (en) * | 2016-06-23 | 2018-08-03 | 国家电网公司 | A kind of water turbine set shafting dynamical system state on-line diagnosing apparatus and method |
| CN108204931A (en) * | 2018-01-15 | 2018-06-26 | 中铁检验认证中心 | Contact line alternating bending test fail-ure criterion system |
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| Publication number | Publication date |
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| CN103234441B (en) | 2016-03-30 |
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Granted publication date: 20160330 Termination date: 20210409 |