CN103552931A - Control device for preventing crane contactor from being stuck - Google Patents

Control device for preventing crane contactor from being stuck Download PDF

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Publication number
CN103552931A
CN103552931A CN201310533587.8A CN201310533587A CN103552931A CN 103552931 A CN103552931 A CN 103552931A CN 201310533587 A CN201310533587 A CN 201310533587A CN 103552931 A CN103552931 A CN 103552931A
Authority
CN
China
Prior art keywords
input end
contactless switch
contactor
mouth
drg
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.)
Pending
Application number
CN201310533587.8A
Other languages
Chinese (zh)
Inventor
刘龙
王萍
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.)
HENAN CRANE CO Ltd
Original Assignee
HENAN CRANE CO Ltd
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 HENAN CRANE CO Ltd filed Critical HENAN CRANE CO Ltd
Priority to CN201310533587.8A priority Critical patent/CN103552931A/en
Publication of CN103552931A publication Critical patent/CN103552931A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a control device for preventing a crane contactor from being stuck. According to the control device, the output end of a power supply is connected with the input end of a circuit breaker; the output end of the circuit breaker is connected with the input end of a circuit breaker; the output end of the circuit breaker is connected with the input end of a motor; two lines are led out from the output end of the circuit breaker; one line is connected with the input end of a contactor main contact sticking detection and indication device; one line is connected with the input end of a brake contactor; the output end of the brake contactor is connected with the input end of a brake; the output end of the brake is connected with the input end of the motor; the other line led out from the brake contactor is connected with the input end of the contactor main contact sticking detection and indication device; the output end of a master controller is connected with the input end of the contactor; the other line led out from the master controller is connected with the input end of the contactor main contact sticking detection and indication device.

Description

Prevent the control setup of hoisting crane contactless switch adhesion
 
Technical field:
The present invention relates to prevent the control setup of hoisting crane contactless switch adhesion, be specially adapted to use on the crane for steelworks use of handling founding metal.
Background technology:
Existing hoisting crane, the conventional line that motor forward/backward rotation adopts contactless switch to control, be generally to control conversing contactor by master controller, conversing contactor is controlled major loop energising and the power-off of electrical motor, thereby realizes the running that electronic contactless switch is controlled electrical motor.It is also by the output circuit on drg, to be connected with input circuit on electrical motor to fetch to control drg electrical motor power on/off and complete that the drg of realizing safety guard-safeguard is opened with holding tightly; in actual use; if major loop occurs abnormal when motor start-up, work; electric current sharply increases; it is stuck that after the contactless switch adhesive of the adhesion of contactless switch main contact or the energising of control electrical motor, there was a mechanical failure; electrical motor major loop cannot power-off; yet will cause the generation of serious accident, greatly reduced the reliability of equipment.
Summary of the invention:
Task of the present invention is to propose a kind of reduction potential safety hazard, improves the reliability of equipment and the control setup that prevents the adhesion of hoisting crane contactless switch of production efficiency.
Task of the present invention completes like this, prevent the control setup of hoisting crane contactless switch adhesion, it is characterized in that: the mouth of power supply is connected with the input end of circuit breaker, the mouth of circuit breaker is connected with the input end of reversing contactor, the mouth of reversing contactor is connected with the input end of electrical motor, the mouth of reversing contactor is drawn two-lines road, article one, on circuit and contactless switch main contact, adhesion detects, the input end of indicating device is connected, article one, circuit is connected with the input end of drg contactless switch, the mouth of drg contactless switch is connected with the input end of drg, drg mouth be connected with the input end of electrical motor, another circuit of drawing on described drg contactless switch and the adhesion of contactless switch main contact detect, the input end of indicating device is connected, the mouth of master controller is connected with the input end of contactless switch, another of drawing on a master controller circuit and the adhesion of contactless switch main contact detect, the input end of indicating device is connected.
The present invention has following effect: use this control setup, can eliminate the potential safety hazard that electrical motor that the adhesion of contactless switch main contact causes cannot power-off brings, improved reliability and the production efficiency of equipment.
Accompanying drawing explanation:
Fig. 1 is structure block diagram of the present invention.
The specific embodiment:
In conjunction with above accompanying drawing, describe embodiment in detail, the mouth of power supply 1 is connected with the input end of circuit breaker 2, the mouth of circuit breaker is connected with the input end of reversing contactor 3, the mouth of reversing contactor is connected with the input end of electrical motor, the mouth of reversing contactor 3 is drawn two-lines road, article one, on circuit and contactless switch main contact, adhesion detects, the input end of indicating device 8 is connected, article one, circuit is connected with the input end of drg contactless switch 6, the mouth of drg contactless switch is connected with the input end of drg 7, 7 mouth of drg is connected with the input end of electrical motor, another circuit of drawing from drg contactless switch and the adhesion of contactless switch main contact detect, the input end of indicating device is connected, the mouth of master controller 5 is connected with the input end of contactless switch 3, another of drawing on a master controller circuit and the adhesion of contactless switch main contact detect, the input end of indicating device is connected.
Power supply 1 is used AC380V, and power supply first passes through circuit breaker 2, the reversing contactor 3 of controlling through controller 5 again, electrical motor 4 energisings after reversing contactor adhesive, reversing contactor 3 adhesive rear brake contactless switch 6 adhesives simultaneously, drg 7 energisings are opened, electrical motor 3 entrys into service.During shut-down operation, the control signal that master controller 5 sends disappears, and contacts of contactor adhesion detection, indicating device 8 detect reversing contactor 3 and the whether normal disjunction of drg contactless switch 6.If after the blackout of master controller 5, the main contact adhesion of reversing contactor 3 or drg contactless switch 6, normally disjunction, contactless switch main contact adhesion detection, indicating device 82 send signal to opening circuit immediately, control circuit breaker 2 tripping operations, cut off electrical source of power, drg 7 is closed under the effect of spring force.Send alerting signal, prompting operation, service personnel check timely simultaneously.Thereby avoided because electrical motor major loop after the adhesion of contactless switch main contact cannot disjunction the potential safety hazard that electrical motor can not shut down or drg contactless switch adhesion rear brake cannot closed be brought.Owing to having increased contactless switch adhesion detection and indicating device, greatly improved reliability and the production efficiency of equipment.

Claims (1)

1. prevent the control setup of hoisting crane contactless switch adhesion, it is characterized in that: the mouth of power supply is connected with the input end of circuit breaker, the mouth of circuit breaker is connected with the input end of reversing contactor, the mouth of reversing contactor is connected with the input end of electrical motor, the mouth of reversing contactor is drawn two-lines road, article one, on circuit and contactless switch main contact, adhesion detects, the input end of indicating device is connected, article one, circuit is connected with the input end of drg contactless switch, the mouth of drg contactless switch is connected with the input end of drg, drg mouth be connected with the input end of electrical motor, another circuit of drawing on described drg contactless switch and the adhesion of contactless switch main contact detect, the input end of indicating device is connected, the mouth of master controller is connected with the input end of contactless switch, another of drawing on a master controller circuit and the adhesion of contactless switch main contact detect, the input end of indicating device is connected.
CN201310533587.8A 2013-11-04 2013-11-04 Control device for preventing crane contactor from being stuck Pending CN103552931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310533587.8A CN103552931A (en) 2013-11-04 2013-11-04 Control device for preventing crane contactor from being stuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310533587.8A CN103552931A (en) 2013-11-04 2013-11-04 Control device for preventing crane contactor from being stuck

Publications (1)

Publication Number Publication Date
CN103552931A true CN103552931A (en) 2014-02-05

Family

ID=50007357

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310533587.8A Pending CN103552931A (en) 2013-11-04 2013-11-04 Control device for preventing crane contactor from being stuck

Country Status (1)

Country Link
CN (1) CN103552931A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110885007A (en) * 2019-11-30 2020-03-17 张家港宏昌钢板有限公司 Driving control loop

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202226557U (en) * 2011-08-24 2012-05-23 大连美恒电气有限公司 Pressure adjusting and speed adjusting device controlled by multi-interlock brake
CN202535297U (en) * 2012-03-23 2012-11-14 河南起重机器有限公司 Control circuit preventing motor forward rotating contactor and motor backward rotating contactor from being adhered
CN202671050U (en) * 2012-07-04 2013-01-16 河南起重机器有限公司 Descending protection circuit arranged on crane
CN202671049U (en) * 2012-06-27 2013-01-16 河南起重机器有限公司 Controller for detecting operation normality of brake of crane
CN202864730U (en) * 2012-09-10 2013-04-10 河南起重机器有限公司 Control line for detecting contact adhesion of crane brake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202226557U (en) * 2011-08-24 2012-05-23 大连美恒电气有限公司 Pressure adjusting and speed adjusting device controlled by multi-interlock brake
CN202535297U (en) * 2012-03-23 2012-11-14 河南起重机器有限公司 Control circuit preventing motor forward rotating contactor and motor backward rotating contactor from being adhered
CN202671049U (en) * 2012-06-27 2013-01-16 河南起重机器有限公司 Controller for detecting operation normality of brake of crane
CN202671050U (en) * 2012-07-04 2013-01-16 河南起重机器有限公司 Descending protection circuit arranged on crane
CN202864730U (en) * 2012-09-10 2013-04-10 河南起重机器有限公司 Control line for detecting contact adhesion of crane brake

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110885007A (en) * 2019-11-30 2020-03-17 张家港宏昌钢板有限公司 Driving control loop

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140205