CN203759124U - Portable rail seam resistance tester - Google Patents

Portable rail seam resistance tester Download PDF

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Publication number
CN203759124U
CN203759124U CN201420177579.4U CN201420177579U CN203759124U CN 203759124 U CN203759124 U CN 203759124U CN 201420177579 U CN201420177579 U CN 201420177579U CN 203759124 U CN203759124 U CN 203759124U
Authority
CN
China
Prior art keywords
testing device
seam resistance
measurement terminal
rail
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420177579.4U
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Chinese (zh)
Inventor
穆明亮
裴文龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN201420177579.4U priority Critical patent/CN203759124U/en
Application granted granted Critical
Publication of CN203759124U publication Critical patent/CN203759124U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a portable rail seam resistance tester comprising a case. A data collection device, a test main unit and a direct-current power supply are arranged within the case. A controller of the test main unit is connected with a storage, a display, an alarm, a USB interface, a wireless information transceiver and a keyboard. The data collection device comprises an AD converter, two signal amplifier circuit sets and two signal filter circuit sets. A measuring terminal is connected to the signal filter circuits through test wires. Positive and negative electrodes of the direct-current power supply are provided with power wire leads, respectively, both arranged outside the case; the direct-current power supply can power a steel rail. The portable rail seam resistance tester is applicable to online test of rail seam resistance, is reasonable in structure and convenient to operate, provides visual test results, meets the needs of testing in different environments, is convenient to carry and use, accurate in measurement data and long in service life.

Description

Portable rail seam resistance testing device
Technical field
The utility model relates to a kind of proving installation for urban track traffic DC traction backflow gap resistance, especially a kind of portable rail seam resistance testing device.
Background technology
Track is the return flow line of urban track traffic DC traction system, its backflow performance is mainly determined by rail resistance, and rail resistance is mainly decided by rail connected mode, rail self-characteristic and seam resistance, wherein, rail connected mode and rail self-characteristic are all determined values, after subway builds up, cannot change, but gap resistance is because the various uncertain factors in work progress cause variation range larger.Gap resistance has a great impact stray current and rail current potential, is the return flow line design of direct-current traction power supply and the foundation of adjusting, so gap resistance-type DC traction return-flow system designs, a significant data of maintenance.
Current measuring method: the method for testing of gap resistance is mainly also to adopt traditional on-the-spot manual testing's mode to complete, and adopts voltammetry, off-line test mode.When gap resistance test is carried out at scene, choose the rail with the certain length of seam, with direct supply, give this section of rail energising, with multimeter, measuring respectively the rail pressure drop of band rail gap and the normal steel rail pressure of equal length falls, by calculative determination track resistance, whether meet the requirements again, wherein, rules regulation track seam resistance value must not be greater than one meter of same size track resistance resistance.But this method of testing only can off-line test, can not carry out on-line testing, due to the logical electric current of direct supply and on-the-spot actual current difference very large, make test error large.In addition, test relatively loaded down with trivial detailsly, the manpower and materials of employing are larger.
Utility model content
In order to address the above problem, the utility model proposes a kind of portable rail seam resistance testing device, it can overcome the weak point of prior art, can either carry out on-line testing, also can carry out off-line test, and simple in structure, test accurate, easy to operately, also have and report to the police and memory function, visual result, and be convenient to the data analysis in later stage.
The utility model solves the technical scheme that its technical matters adopts: a kind of portable rail seam resistance testing device, comprise casing, and in described casing, be provided with data collector, Test Host and direct supply; Described Test Host comprises controller, storer, display, alarm, USB interface, wireless messages R-T unit and keyboard; Described controller is connected with storer, display, alarm, USB interface, wireless messages R-T unit and keyboard respectively; Described data collector comprises AD converter, and the signal amplification circuit and the signal filter circuit that are linked in sequence with AD converter; Described signal amplification circuit and signal filter circuit arrange respectively two groups, and wherein one group connects for measuring the measurement terminal with the voltage drop of joint steel rail, and another group connects for measuring the measurement terminal of the voltage drop of normal rail; Described measurement terminal is connected to signal filter circuit by p-wire; The positive and negative electrode of described direct supply is respectively equipped with the power lead pin that is placed in casing outside, can power for rail.
The position that described measurement terminal is connected with p-wire is provided with sucker, can conveniently measurement terminal and rail be fixed; Described sucker can be set to magnetic chuck also can be set to rubber suction cups, and sucker is transparence.
Described casing is provided with measurement terminal and connects jack, and this jack is connected with signal filter circuit; One end of p-wire connects measurement terminal, the other end is connected with the plug that can peg graft with described jack, facilitate under off working state p-wire and measurement terminal are taken off, avoid it to damage, can also the in the situation that of p-wire or measurement terminal damage, be convenient for changing simultaneously.
Further, described p-wire and the mode that measurement terminal adopts snapping or is threaded, facilitate its replacing.
Described casing is provided with the receiver for splendid attire p-wire and power lead, and p-wire, power lead and measurement terminal are played a protective role, and prevents that its damage from affecting test result.
Every length of described p-wire is not less than 5 meters.
Described casing is provided with current and power supply charging jack, can be equipment power supply at any time.
Described direct supply is provided with independent switch.
This device is equipped with accumulator, the impact of the environment of not powered when it is used.
The beneficial effects of the utility model are: a kind of portable rail seam resistance testing device, it can carry out the on-line testing of rail gap resistance, also can carry out off-line test.This apparatus structure is reasonable, easy to operate, and test result is directly perceived, can meet the testing requirement under varying environment, carries, easy to use, and measurement data is accurate, and long service life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing 1 is the structural representation of portable rail seam resistance testing device.
Accompanying drawing 2 is the outside drawing of portable rail seam resistance testing device.
Accompanying drawing 3 is the example structure schematic diagram of portable rail seam resistance testing device.
Accompanying drawing 4 is the use principle figure of portable rail seam resistance testing device.
In figure, 1. Test Host, 1-1. controller, 1-2. storer, 1-3. display, 1-4. alarm, 1-5.USB interface, 1-6. wireless messages R-T unit, 1-7. keyboard, 2. data collector, 2-1.AD converter, 2-2. signal amplification circuit, 2-3. signal filter circuit, 2-4. measurement terminal, 2-5. p-wire, 2-6. sucker, 3. direct supply, 4. casing, 5. rail, 6. seam.
Embodiment
In the accompanying drawings, a kind of portable rail seam resistance testing device, comprises casing 4, in described casing 4, is provided with data collector 2, Test Host 1 and direct supply 3; Described Test Host 1 comprises controller 1-1, storer 1-2, display 1-3, alarm 1-4, usb 1-5, wireless messages R-T unit 1-6 and keyboard 1-7; Described controller 1-1 is connected with storer 1-2, display 1-3, alarm 1-4, usb 1-5, wireless messages R-T unit 1-6 and keyboard 1-7 respectively; Described data collector 2 comprises AD converter 2-1, and the signal amplification circuit 2-2 and the signal filter circuit 2-3 that are linked in sequence with AD converter 2-1; Described signal amplification circuit 2-2 and signal filter circuit 2-3 arrange respectively two groups, and wherein one group connects for measuring the measurement terminal 2-4 with the voltage drop of seam 6 rail 5, and another group connects for measuring the measurement terminal 2-4 of the voltage drop of normal rail 5; Described measurement terminal 2-4 is connected to signal filter circuit 2-3 by p-wire 2-5; The positive and negative electrode of described direct supply 3 is respectively equipped with the power lead pin that is placed in casing 4 outsides, can be rail 5 power supplies.
The position that described measurement terminal 2-4 is connected with p-wire 2-5 is provided with sucker 2-6, can be conveniently that measurement terminal 2-4 and rail 5 is fixing; Described sucker 2-6 can be set to magnetic chuck also can be set to rubber suction cups, and sucker 2-6 is transparence.
Described casing 4 is provided with measurement terminal and connects jack, and this jack is connected with signal filter circuit 2-3; One end of p-wire 2-5 connects measurement terminal 2-4, the other end is connected with the plug that can peg graft with described jack, facilitate under off working state p-wire 2-5 and measurement terminal 2-4 are taken off, avoid it to damage, can also the in the situation that of p-wire 2-5 or measurement terminal 2-6 damage, be convenient for changing simultaneously.
Further, described p-wire 2-5 and the mode that measurement terminal 2-4 adopts snapping or is threaded, facilitate its replacing.
Described casing 4 is provided with the receiver for splendid attire p-wire 2-5 and power lead, and p-wire 2-5, power lead and measurement terminal 2-4 are played a protective role, and prevents that its damage from affecting test result.
Every length of described p-wire 2-5 is not less than 5 meters.
Described casing 4 is provided with current and power supply charging jack, can be equipment power supply at any time.
Described direct supply 3 is provided with independent switch.
This device is equipped with accumulator, the impact of the environment of not powered when it is used.
During measurement, first measurement terminal 2-4, p-wire 2-5 and measurement mechanism are connected, choose with 5 meters of rail 5 of seam 6 with adjacent not with 5 meters of rail 5 of seam 6, respectively measurement terminal 2-4 is fixed on three points choosing; To equipment energising, the just voltage drop U1 of 5 of on-line testing band seam 6 meters of rail 5 and adjacent not with the voltage drop U2 of 5 meters of rail 5 of seam 6 respectively, wherein U1 is equivalent to 5 meters of rail 5 pressure drops and seam 6 pressure drop sums; And then by voltage ratio, compared with method, calculate track seam resistance and whether meet the requirements.Be specially (by reference to the accompanying drawings 4): U1/U2=U3, U3-1=U, compares gained U and 1, if U >=1, alarm equipment alarm, can judge that seam resistance is undesirable, also can show respective value on display 1-3 simultaneously.Measured data can be passed to host computer by usb 1-5 or wireless messages R-T unit 1-6.If tested under off-line state, need to be rail 5 power supplies with direct supply 3, with wire, connect positive and negative pin and the rail 5 of direct supply 3, make it form loop, then test.

Claims (9)

1. a portable rail seam resistance testing device, is characterized in that, comprises casing (4), is provided with data collector (2) in described casing (4), Test Host (1) and direct supply (3); Described Test Host (1) comprises controller (1-1), storer (1-2), display (1-3), alarm (1-4), USB interface (1-5), wireless messages R-T unit (1-6) and keyboard (1-7); Described controller (1-1) is connected with storer (1-2), display (1-3), alarm (1-4), USB interface (1-5), wireless messages R-T unit (1-6) and keyboard (1-7) respectively; Described data collector (2) comprises AD converter (2-1), and the signal amplification circuit (2-2) and the signal filter circuit (2-3) that are linked in sequence with AD converter (2-1); Described signal amplification circuit (2-2) and signal filter circuit (2-3) arrange respectively two groups, one group of measurement terminal (2-4) that connects the voltage drop be used for measuring band seam (6) rail (5) wherein, another group connects the measurement terminal (2-4) of the voltage drop that is used for measuring normal rail (5); Described measurement terminal (2-4) is connected to signal filter circuit (2-3) by p-wire (2-5); The positive and negative electrode of described direct supply (3) is respectively equipped with and is placed in the outside power lead pin of casing (4), can be rail (5) power supply.
2. a kind of portable rail seam resistance testing device according to claim 1, it is characterized in that, the position that described measurement terminal (2-4) is connected with p-wire (2-5) is provided with sucker (2-6), described sucker (2-6) is magnetic chuck or rubber suction cups, and sucker (2-6) is transparence.
3. a kind of portable rail seam resistance testing device according to claim 1, is characterized in that, described casing (4) is provided with measurement terminal and connects jack, and this jack is connected with signal filter circuit (2-3); One end of p-wire (2-5) connects measurement terminal (2-4), and the other end is connected with the plug that can peg graft with described jack.
4. a kind of portable rail seam resistance testing device according to claim 3, is characterized in that, the mode that described p-wire (2-5) adopts snapping or is threaded with measurement terminal (2-4).
5. a kind of portable rail seam resistance testing device according to claim 1, is characterized in that, described casing (4) is provided with the receiver for splendid attire p-wire (2-5) and power lead.
6. according to a kind of portable rail seam resistance testing device described in claim 1 or 3, it is characterized in that, every length of described p-wire (2-5) is not less than (5) rice.
7. a kind of portable rail seam resistance testing device according to claim 1, is characterized in that, described casing (4) is provided with current and power supply charging jack.
8. a kind of portable rail seam resistance testing device according to claim 1, is characterized in that, described direct supply (3) is provided with independent switch.
9. a kind of portable rail seam resistance testing device according to claim 1, is characterized in that, this device is equipped with accumulator.
CN201420177579.4U 2014-04-14 2014-04-14 Portable rail seam resistance tester Expired - Fee Related CN203759124U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420177579.4U CN203759124U (en) 2014-04-14 2014-04-14 Portable rail seam resistance tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420177579.4U CN203759124U (en) 2014-04-14 2014-04-14 Portable rail seam resistance tester

Publications (1)

Publication Number Publication Date
CN203759124U true CN203759124U (en) 2014-08-06

Family

ID=51254380

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420177579.4U Expired - Fee Related CN203759124U (en) 2014-04-14 2014-04-14 Portable rail seam resistance tester

Country Status (1)

Country Link
CN (1) CN203759124U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106841806A (en) * 2016-12-12 2017-06-13 深圳市华力特电气有限公司 The measurement apparatus and method of a kind of rail resistance
CN108896859A (en) * 2018-07-19 2018-11-27 华霆(合肥)动力技术有限公司 Wiring harness tester and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106841806A (en) * 2016-12-12 2017-06-13 深圳市华力特电气有限公司 The measurement apparatus and method of a kind of rail resistance
CN108896859A (en) * 2018-07-19 2018-11-27 华霆(合肥)动力技术有限公司 Wiring harness tester and method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140806

Termination date: 20150414

EXPY Termination of patent right or utility model