CN101957422A - Cable breakpoint fault rapid searching instrument and searching method thereof - Google Patents
Cable breakpoint fault rapid searching instrument and searching method thereof Download PDFInfo
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- CN101957422A CN101957422A CN2010105002999A CN201010500299A CN101957422A CN 101957422 A CN101957422 A CN 101957422A CN 2010105002999 A CN2010105002999 A CN 2010105002999A CN 201010500299 A CN201010500299 A CN 201010500299A CN 101957422 A CN101957422 A CN 101957422A
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- broken string
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Abstract
The invention relates to a cable breakpoint fault rapid searching instrument and a method thereof. The method comprises the following steps of, firstly, switching off a breaker which supplies power to a drum and a trolley motor in a transfer power box; secondly, measuring a motor resistance by using a universal meter at the wiring part at the lower terminal of the breaker, and judging which a core wire in a cable is a broken wire; thirdly, connecting the broken wire to a live wire at the lower terminal of an air switch through a lead at the wiring part at the lower terminal of the breaker; fourthly, connecting the other core wires to a ground wire through leads at the wiring part at the lower terminal of the breaker without disassembling a load; fifthly, opening the air switch to transport a detection current, sleeving a jaw of the searching instrument on the cable, and detecting from the power supply end to the load end along the cable; and sixthly, disconnecting the wire broken part and carrying out breakpoint butt joint. The invention has the advantages of simpleness, practicability and convenient operation and can rapidly verify the accurate position of a breakpoint without damaging the cable. The cable can be used again through breakpoint butt joint and banding, thereby lowering the cost and also enhancing the maintenance speed.
Description
Technical field
The present invention relates to a kind of breakpoint of cable fault and search instrument and method fast.
Background technology
The cable break checkout equipment is a lot of both at home and abroad at present, price general charged costliness, and complicated operation.Also some is cheap anti-tampering very poor, runs into hand sometimes, runs into all wrong demonstration in ground.Be not suitable for steel mill's execute-in-place.
What the surface car of steel mill was used at present all is the non-shield type power cable of 6 cores.3 core 35mm2 lines are for drive motor (variable frequency control); 3 core 6mm2 lines are current supply cable reel motors.Because frequent folding and unfolding on the ground, the folding and unfolding of this cable is easy to cause broken string,, cause very big waste even disconnected one of the little line of 6mm2 also needs to change whole cable.
Summary of the invention
The purpose of this invention is to provide a kind of breakpoint of cable fault and search instrument and method fast, simple and practical, easy to operate, can accomplish not damage the accurate position that cable also can be verified breakpoint fast, both reduced cost, improved inspection speed again.
The objective of the invention is to be achieved through the following technical solutions:
A kind of breakpoint of cable fault is searched instrument fast, comprise pincers type shell and circuit board, described circuit board comprises integrated circuit, resistance, electric capacity, triode and light emitting diode, resistance R 1, R2, capacitor C 1 and integrated circuit are formed integrated amplifier, resistance R 3 is a sensitivity adjusting resistance, resistance R 5 is the inclined to one side value resistance of transistor base, and resistance R 6 is the current-limiting resistance of light emitting diode, and circuit board connects battery and inductive head.
A kind of breakpoint of cable fault fast searching method, it may further comprise the steps:
1) power supply disconnects: the isolating switch that in the transfer power supply box is the power supply of reel and vehicle motor is disconnected;
2) judge: measure the motor resistance with multimeter in wiring place of the described isolating switch lower end of step 1), judge which root heart yearn is broken string in the cable;
3) broken string is in succession: step 2) described broken string is wired on the live wire of air switch lower end in wiring place of isolating switch lower end;
4) non-broken string in succession: remaining heart yearn is wired on the ground wire in wiring place of isolating switch lower end, and load need not be removed;
5) detect: open air switch and carry the detection electric current, the jaw of searching instrument is enclosed within on the cable, detects to load end from feeder ear, on the beginning cable electric signal is arranged along cable, pilot lamp on the testing circuit is shinny, and the pilot lamp place of knocking out is the breakpoint place in the testing process;
6) handle: take the broken string place apart, carry out the breakpoint butt joint, wrapping finishes, and removes lead, and the isolating switch cable fault of closing is got rid of.
Beneficial effect of the present invention is:
1, effectively amplified electric signal with mutual inductor;
Need not disconnect line terminals when 2, rushing to repair, only the leads with several band crocodile clips get final product, and have improved repairing efficient;
3, simple and practical, easy to operate, can accomplish not damage the accurate position that cable also can be verified breakpoint fast;
4, through broken end butt joint, wrapping, cable can use again, has both reduced cost, has improved inspection speed again.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the circuit diagram that the breakpoint of cable fault is searched instrument fast;
Fig. 2 is the connection layout of breakpoint of cable fault fast searching method.
Among the figure:
1, dolly; 2, reel; 3, isolating switch; 4, air switch; 5, lead; 6, transfer power supply box.
Embodiment
As shown in Figure 1, the described a kind of breakpoint of cable fault of the embodiment of the invention is searched instrument fast, comprise pincers type shell and circuit board, described circuit board comprises integrated circuit, resistance, electric capacity, triode and light emitting diode, integrated circuit is provided with 14 pins, resistance R 1, R2, capacitor C 1 and integrated circuit are formed integrated amplifier, resistance R 3 is a sensitivity adjusting resistance, resistance R 5 is the inclined to one side value resistance of transistor base, resistance R 6 is the current-limiting resistance of light emitting diode, and circuit board connects battery and inductive head.
As shown in Figure 2, a kind of breakpoint of cable fault fast searching method, it may further comprise the steps:
1) power supply disconnects: the isolating switch 3 that in the transfer power supply box 6 is reel and vehicle motor power supply is disconnected;
2) judge: measure the motor resistance with multimeter in described isolating switch 3 lower end wiring place of step 1), judge which root heart yearn is broken string in the cable;
3) broken string is in succession: step 2) described broken string is connected on the live wire of air switch 4 lower ends with the lead 5 of being with the crocodile clip in wiring place of isolating switch 3 lower ends;
4) non-broken string in succession: remaining heart yearn is connected on the ground wire with the lead 4 of being with the crocodile clip in wiring place of isolating switch 3 lower ends, and load need not be removed;
5) detect: open air switch 4 and carry the detection electric current, the jaw of searching instrument is enclosed within on the cable, detects to load end from feeder ear, on the beginning cable electric signal is arranged along cable, pilot lamp on the testing circuit is shinny, and the pilot lamp place of knocking out is the breakpoint place in the testing process;
6) handle: take the broken string place apart, carry out the breakpoint butt joint, wrapping finishes, and removes lead, and isolating switch 3 cable faults that close are got rid of.
Principle of work: during detection, the alternating current that changes on electrified wire cable epidermis has produced alternating magnetic field, and the closed-loop path that alternating magnetic field passes detector produces induction current.When inductive head (cable is switched on) when the tested cable, the 50HZ ac signal will from No. 1 pin input of integrated circuit through integrated amplification, shaping after again by No. 6 pins output high level, triode conducting this moment, lumination of light emitting diode; Moving detector disappears through electric signal behind the breakpoint, No. 6 pin output low levels, and triode ends, and light emitting diode is not luminous.
Claims (2)
1. a breakpoint of cable fault is searched instrument fast, comprise pincers type shell and circuit board, it is characterized in that: described circuit board comprises integrated circuit, resistance, electric capacity, triode and light emitting diode, resistance R 1, R2, capacitor C 1 and integrated circuit are formed integrated amplifier, resistance R 3 is a sensitivity adjusting resistance, resistance R 5 is the inclined to one side value resistance of transistor base, and resistance R 6 is the current-limiting resistance of light emitting diode, and circuit board connects battery and inductive head.
2. a breakpoint of cable fault fast searching method is characterized in that, said method comprising the steps of:
1) power supply disconnects: the isolating switch that in the transfer power supply box is the power supply of reel and vehicle motor is disconnected;
2) judge: measure the motor resistance with multimeter in wiring place of the described isolating switch lower end of step 1), judge which root heart yearn is broken string in the cable;
3) broken string is in succession: step 2) described broken string is wired on the live wire of air switch lower end in wiring place of isolating switch lower end;
4) non-broken string in succession: remaining heart yearn is wired on the ground wire in wiring place of isolating switch lower end, and load need not be removed;
5) detect: open air switch and carry the detection electric current, the jaw of searching instrument is enclosed within on the cable, detects to load end from feeder ear, on the beginning cable electric signal is arranged along cable, pilot lamp on the testing circuit is shinny, and the pilot lamp place of knocking out is the breakpoint place in the testing process;
6) handle: take the broken string place apart, carry out the breakpoint butt joint, wrapping finishes, and removes lead, and the isolating switch cable fault of closing is got rid of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105002999A CN101957422A (en) | 2010-09-29 | 2010-09-29 | Cable breakpoint fault rapid searching instrument and searching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105002999A CN101957422A (en) | 2010-09-29 | 2010-09-29 | Cable breakpoint fault rapid searching instrument and searching method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101957422A true CN101957422A (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105002999A Pending CN101957422A (en) | 2010-09-29 | 2010-09-29 | Cable breakpoint fault rapid searching instrument and searching method thereof |
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| CN (1) | CN101957422A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236601A (en) * | 2013-05-17 | 2013-08-07 | 唐山昌硕电器有限公司 | Wiring terminal with indicator |
| CN107782944A (en) * | 2017-09-26 | 2018-03-09 | 信利光电股份有限公司 | A kind of universal meter and the device and method of detection circuit open-circuit position |
| CN108627727A (en) * | 2017-03-15 | 2018-10-09 | 南京梅山冶金发展有限公司 | The detection device and detection method of the disconnected core of electric LHD Randomized Cable |
| CN110057494A (en) * | 2019-05-05 | 2019-07-26 | 大连理工大学 | A kind of sensor Speediness link line and fault finding system towards electrical measuring method |
| CN112345970A (en) * | 2020-11-06 | 2021-02-09 | 湖南常德牌水表制造有限公司 | Intelligent inspection method for abnormal faults of acquisition equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086418U (en) * | 1990-11-15 | 1991-10-09 | 侯良辰 | No-contact test unit |
| CN2840065Y (en) * | 2005-11-11 | 2006-11-22 | 孙自玉 | Power circuit resultant fault detector |
-
2010
- 2010-09-29 CN CN2010105002999A patent/CN101957422A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086418U (en) * | 1990-11-15 | 1991-10-09 | 侯良辰 | No-contact test unit |
| CN2840065Y (en) * | 2005-11-11 | 2006-11-22 | 孙自玉 | Power circuit resultant fault detector |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236601A (en) * | 2013-05-17 | 2013-08-07 | 唐山昌硕电器有限公司 | Wiring terminal with indicator |
| CN103236601B (en) * | 2013-05-17 | 2015-07-01 | 唐山昌硕电器有限公司 | Wiring terminal with indicator |
| CN108627727A (en) * | 2017-03-15 | 2018-10-09 | 南京梅山冶金发展有限公司 | The detection device and detection method of the disconnected core of electric LHD Randomized Cable |
| CN107782944A (en) * | 2017-09-26 | 2018-03-09 | 信利光电股份有限公司 | A kind of universal meter and the device and method of detection circuit open-circuit position |
| CN110057494A (en) * | 2019-05-05 | 2019-07-26 | 大连理工大学 | A kind of sensor Speediness link line and fault finding system towards electrical measuring method |
| CN110057494B (en) * | 2019-05-05 | 2021-03-26 | 大连理工大学 | Sensor quick connection and fault recognition system for electrical measurement method |
| CN112345970A (en) * | 2020-11-06 | 2021-02-09 | 湖南常德牌水表制造有限公司 | Intelligent inspection method for abnormal faults of acquisition equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20110126 |