CN202864730U - Control line for detecting contact adhesion of crane brake - Google Patents
Control line for detecting contact adhesion of crane brake Download PDFInfo
- Publication number
- CN202864730U CN202864730U CN 201220457337 CN201220457337U CN202864730U CN 202864730 U CN202864730 U CN 202864730U CN 201220457337 CN201220457337 CN 201220457337 CN 201220457337 U CN201220457337 U CN 201220457337U CN 202864730 U CN202864730 U CN 202864730U
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- China
- Prior art keywords
- input end
- drg
- brake
- contactor
- adhesion
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- Expired - Fee Related
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Abstract
The utility model discloses a control line for detecting contact adhesion of a crane brake. According to the control line, the output ends of a power supply and a main command controller are connected with the input end of a reversing contactor; the output end of the reversing contactor is connected with the input end of a motor; the input end of the motor is connected with the output end of the brake; a brake contactor is connected with the output end of the reversing contactor and the input end of the brake; a brake contactor adhesion detection line is connected with the output end of the brake contactor and the input end of the brake in series; and the power supply is connected to the input end of the brake contactor adhesion detection line. After detecting a fault, the brake contactor adhesion detection line immediately cuts off the power supply for protection. Therefore, the potential safety hazard of hook slipping caused by adhesion of the brake contactor is effectively avoided, and the reliability and production efficiency of equipment are improved.
Description
Technical field:
The utility model relates to the control path that detects the adhesion of drg contactless switch, is specially adapted to use on the crane hoisting mechanism.
Background technology:
Existing hoisting crane is controlled the power contactor of drg by the secondary contact of reversing contactor in the adhesive of motor commutation contactless switch, realize opening of drg.See Fig. 1, the mouth that power supply 1 is connected with master controller is connected with the input end of reversing contactor, the mouth of reversing contactor is connected with the input end of electrical motor 3, the input end of electrical motor is connected with the mouth of drg, be connected with drg contactless switch 5 between the mouth of described reversing contactor and the input end of drg, when actual hoisting heavy, in case drg contactless switch adhesion, electrical motor stops to export the rising torque, because drg contactless switch adhesion, drg is in open mode, the phenomenon of slipping under uncontrollable weight will appear, will inevitably cause great safety misadventure, its shortcoming is: have potential safety hazard in real work, greatly reduced the reliability of equipment.
Summary of the invention:
Task of the present utility model is to propose high a kind of of a kind of reliability that improves equipment and service efficiency to detect the control path that crane brake contacts adhesion.Task of the present utility model is finished like this, a kind of control path that detects crane brake contact adhesion, it comprises that power supply is connected mouth and is connected with the input end of reversing contactor with master controller, the mouth of reversing contactor is connected with the input end of electrical motor, the input end of electrical motor is connected with the mouth of drg, be connected with the drg contactless switch between the mouth of described reversing contactor and the input end of drg, it is characterized in that: be serially connected with drg contactless switch adhesion detection line in the middle of the mouth of described drg contactless switch and the input end of drg, be connected with power supply on the input end of described drg contactless switch adhesion detection line.Drg contactless switch adhesion detection line detects after the fault immediately power cut-off and protects.
The utlity model has following effect: use control path of the present utility model, can detect timely and stop action in the time of can guaranteeing the adhesion of drg contactless switch, can detect timely and stop action when effectively having avoided the adhesion of drg contactless switch, effectively avoid the adhesion of drg contactless switch and slipped the potential safety hazard of hook, improved reliability and the production efficiency of equipment.
Description of drawings:
Fig. 1 is prior art structural representation block scheme, and Fig. 2 is structural representation block scheme of the present utility model.
Drawing explanation: 1, power supply 2, reversing contactor 3, electrical motor 4, master controller 5, drg contactless switch 6, drg 7, drg contactless switch adhesion detection line.
The specific embodiment:
Describe embodiment in detail in conjunction with above accompanying drawing, see Fig. 2, the mouth that master controller 4 is connected with power supply is connected with the input end of reversing contactor 2, the mouth of reversing contactor 2 links to each other with the input end of electrical motor 3, the input end of described electrical motor links to each other with the mouth of drg 6, be connected with drg contactless switch 5 between the input end of the mouth of described reversing contactor and described drg 6, be serially connected with drg contactless switch adhesion detection line 7 in the middle of the mouth of described drg contactless switch and the input end of drg, be connected with power supply on the input end of said drg contactless switch adhesion detection line.
Claims (2)
1. one kind is detected the control path that crane brake contacts adhesion, it comprises that power supply is connected mouth and is connected with the input end of reversing contactor with master controller, the mouth of reversing contactor is connected with the input end of electrical motor, the input end of electrical motor is connected with the mouth of drg, be connected with the drg contactless switch between the mouth of described reversing contactor and the input end of drg, it is characterized in that: be serially connected with drg contactless switch adhesion detection line in the middle of the mouth of described drg contactless switch and the input end of drg, be connected with power supply on the input end of described drg contactless switch adhesion detection line.
2. a kind of control path that detects crane brake contact adhesion according to claim 1 is characterized in that: drg contactless switch adhesion detection line detects after the fault immediately power cut-off and protects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220457337 CN202864730U (en) | 2012-09-10 | 2012-09-10 | Control line for detecting contact adhesion of crane brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220457337 CN202864730U (en) | 2012-09-10 | 2012-09-10 | Control line for detecting contact adhesion of crane brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202864730U true CN202864730U (en) | 2013-04-10 |
Family
ID=48031470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220457337 Expired - Fee Related CN202864730U (en) | 2012-09-10 | 2012-09-10 | Control line for detecting contact adhesion of crane brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202864730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552931A (en) * | 2013-11-04 | 2014-02-05 | 河南起重机器有限公司 | Control device for preventing crane contactor from being stuck |
-
2012
- 2012-09-10 CN CN 201220457337 patent/CN202864730U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552931A (en) * | 2013-11-04 | 2014-02-05 | 河南起重机器有限公司 | Control device for preventing crane contactor from being stuck |
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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: 20130410 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |