Control device for preventing crane contactor from being stuck
A technology of control devices and contactors, applied in safety devices, transportation and packaging, load suspension components, etc., can solve problems such as lowering equipment reliability and mechanical failure jamming, so as to eliminate potential safety hazards, improve reliability and production efficiency effect
Inactive Publication Date: 2014-02-05
HENAN CRANE
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The opening and tightening of the brake to achieve safety protection is also completed by connecting the output circuit on the brake with the input circuit on the motor to control the power on and off of the brake motor. In actual use, if the main circuit is abnormal when the motor starts and works , the current increases sharply, the main contactor of the contactor sticks or the contactor that controls the motor is locked due to mechanical failure, and the main circuit of the motor cannot be powered off. However, it will cause major safety accidents and greatly reduce the safety of the equipment. reliability
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] The embodiment is described in detail in conjunction with the above drawings. The output end of the power supply 1 is connected to the input end of the circuit breaker 2, the output end of the circuit breaker is connected to the input end of the reversing contactor 3, and the output end of the reversing contactor is connected to the motor The output end of the reversing contactor 3 leads to two lines, one line is connected to the input end of the adhesion detection and indicating device 8 on the main contact of the contactor, and the other line is connected to the input end of the brake contactor 6 connection, the output end of the brake contactor is connected to the input end of the brake 7, the output end of the brake 7 is connected to the input end of the motor, and another line drawn from the brake contactor is connected to the main contact of the contactor for adhesion detection, The input end of the indicating device is connected, the output end of the master contr...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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
[0001] Technical field: [0002] The invention relates to a control device for preventing the contactor of a crane from sticking, and is especially suitable for use on metallurgical cranes for hoisting molten and cast metals. Background technique: [0003] In existing cranes, the forward and reverse of the motor adopts the conventional circuit controlled by the contactor. Generally, the master controller controls the forward and reverse contactor, and the forward and reverse contactor controls the power on and off of the main circuit of the motor, so as to realize the electric contact The controller controls the operation of the motor. The opening and tightening of the brake to achieve safety protection is also completed by connecting the output circuit on the brake with the input circuit on the motor to control the power on and off of the brake motor. In actual use, if the main circuit is abnormal when the motor starts and works , the current increases sharply, the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B66C15/00B66C13/22
Inventor 刘龙王萍
Owner HENAN CRANE