CN202687805U - Lifting control circuit for preventing crane from hook sliding - Google Patents

Lifting control circuit for preventing crane from hook sliding Download PDF

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Publication number
CN202687805U
CN202687805U CN 201220363286 CN201220363286U CN202687805U CN 202687805 U CN202687805 U CN 202687805U CN 201220363286 CN201220363286 CN 201220363286 CN 201220363286 U CN201220363286 U CN 201220363286U CN 202687805 U CN202687805 U CN 202687805U
Authority
CN
China
Prior art keywords
input end
drg
contactor
brake
lifting
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
CN 201220363286
Other languages
Chinese (zh)
Inventor
王萍
刘龙
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.)
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 CN 201220363286 priority Critical patent/CN202687805U/en
Application granted granted Critical
Publication of CN202687805U publication Critical patent/CN202687805U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a lifting control circuit for preventing a crane from hook sliding. A power supply and an output end of a master controller are connected with an input end of a lifting contactor; the output end of the lifting contactor is respectively connected with the input ends of a motor and 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; and a lifting time-delay relay is connected between the output end of the lifting contactor and the input end of the brake contactor. The lifting control circuit for preventing the crane from the hook sliding has the beneficial effects: the lifting control circuit provided by the utility model can be used for ensuring that an upward torque is still outputted by the motor when the brake acts, so that the potential safety hazard of the hook sliding caused by the insufficient torque when the master controller stops operating is effectively avoided, and the reliability and production efficiency of equipment are increased.

Description

A kind of rising control path that prevents hook slipping of crane
Technical field:
The utility model relates to a kind of rising control path that prevents hook slipping of crane, is specially adapted to use on the crane hoisting mechanism.
Background technology:
Existing crane hoisting mechanism, see Fig. 1, the mouth that power supply 1 is connected with master controller is connected with the input end of contactless for hoisting 2, the mouth of described rising contact is connected with the input end that electrical motor 3 is connected with the drg contactless switch respectively, the mouth of described drg contactless switch 5 is connected with the input end of drg 6, and the mouth of described drg is connected with the input end of electrical motor 3.During work when the reversing contactor adhesive, realize opening of drg by the power contactor of the secondary contact control drg of reversing contactor.When actual hoisting heavy, be lifted to shut-down operation behind the certain altitude, electrical motor and drg moment cut off the power supply simultaneously, and electrical motor stops to export the rising torque, because hydraulic brake has certain response time, this moment is because weight has lost the upwards torque of electrical motor, and drg is not yet held tightly, and the phenomenon that will occur slipping under the weight will cause serious accident, there is potential safety hazard in the work, greatly reduced the reliability of equipment.
Summary of the invention:
Task of the present utility model is to propose a kind of eliminating safe hidden trouble, and improves the reliability of equipment and a kind of rising control path that prevents hook slipping of crane of production efficiency.Task of the present utility model is finished like this, a kind of rising control path that prevents hook slipping of crane, it comprises that power supply is connected mouth and is connected with the input end of contactless for hoisting with master controller, the mouth of contactless for hoisting is connected input end with electrical motor respectively and is connected with drg, the mouth of described drg contactless switch is connected with the input end of drg, the mouth of drg is connected with the input end of electrical motor, it is characterized in that: be connected with rising slug relay between the input end of the mouth of described contactless for hoisting and drg contactless switch.The utlity model has following effect: use control path of the present utility model, can guarantee that electrical motor was still exported moment upwards when drg worked, moment is not enough and slip the potential safety hazard of hook when effectively having avoided the master controller shut-down operation, has improved reliability and the production efficiency of equipment.
Description of drawings:
Fig. 1 is the prior art circuit block-diagram; Fig. 2 is circuit block-diagram of the present utility model.
The drawing explanation: 1, power supply; 2, contactless for hoisting; 3, electrical motor; 4, master controller; 5, the drg contactless switch; 6, drg; 7, rising slug relay
The specific embodiment:
Describe embodiment in detail in conjunction with above accompanying drawing, the mouth of power supply 1, master controller 4 is connected with the input end of contactless for hoisting 2, the input end that the mouth of contactless for hoisting is connected with the controller contactless switch respectively at electrical motor 3 connects, the mouth of described drg contactless switch is connected with the input end of drg 6, the mouth of described drg is connected with the input end of electrical motor 3, is connected with rising slug relay 7 between the input end of the mouth of described contactless for hoisting 2 and drg contactless switch 5.Power supply 1 uses AC380V, and power supply is controlled contactless for hoisting through master controller, electrical motor energising after the adhesive, and the adhesive of contactless for hoisting adhesive rear brake contactless switch, drg is opened, the electrical motor entry into service.During shut-down operation, master controller is got back to zero-bit, contactless for hoisting get out of hand signal, under the effect of rising slug relay, contactless for hoisting outage after several seconds zero point of drg contactless switch outage, guaranteed that drg makes the time spent electrical motor and still export upwards moment, moment is not enough and slip the potential safety hazard of hook when having avoided the master controller shut-down operation.

Claims (1)

1. rising control path that prevents hook slipping of crane, it comprises that power supply is connected mouth and is connected with the input end of contactless for hoisting with master controller, the mouth of contactless for hoisting is connected input end with electrical motor respectively and is connected with the drg contactless switch, the mouth of described drg contactless switch is connected with the input end of drg, the mouth of drg is connected with the input end of electrical motor, it is characterized in that: be connected with rising slug relay between the input end of the mouth of described contactless for hoisting and drg contactless switch.
CN 201220363286 2012-07-26 2012-07-26 Lifting control circuit for preventing crane from hook sliding Expired - Fee Related CN202687805U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220363286 CN202687805U (en) 2012-07-26 2012-07-26 Lifting control circuit for preventing crane from hook sliding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220363286 CN202687805U (en) 2012-07-26 2012-07-26 Lifting control circuit for preventing crane from hook sliding

Publications (1)

Publication Number Publication Date
CN202687805U true CN202687805U (en) 2013-01-23

Family

ID=47543453

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220363286 Expired - Fee Related CN202687805U (en) 2012-07-26 2012-07-26 Lifting control circuit for preventing crane from hook sliding

Country Status (1)

Country Link
CN (1) CN202687805U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103359633A (en) * 2013-07-23 2013-10-23 中联重科股份有限公司 Tower crane and raising control method, raising control equipment and raising control system of tower crane
CN111392605A (en) * 2020-03-06 2020-07-10 杭州国电大力机电工程有限公司 Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103359633A (en) * 2013-07-23 2013-10-23 中联重科股份有限公司 Tower crane and raising control method, raising control equipment and raising control system of tower crane
CN103359633B (en) * 2013-07-23 2015-08-12 中联重科股份有限公司 Tower machine and lift control method, apparatus and system thereof
CN111392605A (en) * 2020-03-06 2020-07-10 杭州国电大力机电工程有限公司 Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane
CN111392605B (en) * 2020-03-06 2021-09-28 杭州国电大力机电工程有限公司 Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane

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Legal Events

Date Code Title Description
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: 20130123

Termination date: 20150726

EXPY Termination of patent right or utility model