CN202687805U - Lifting control circuit for preventing crane from hook sliding - Google Patents
Lifting control circuit for preventing crane from hook sliding Download PDFInfo
- 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
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- input end
- drg
- contactor
- brake
- lifting
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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
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.
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)
| 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 lifting control method, equipment 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 |
-
2012
- 2012-07-26 CN CN 201220363286 patent/CN202687805U/en not_active Expired - Fee Related
Cited By (4)
| 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 lifting control method, equipment and system thereof |
| CN103359633B (en) * | 2013-07-23 | 2015-08-12 | 中联重科股份有限公司 | Tower crane and lifting control method, equipment 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 |