Causes of hook slipping due to ineffective braking
2022-08-18- Detail
Reasons for hook slipping due to poor braking of crane lifting mechanism
What are the possible electrical reasons for hook slipping due to poor braking of crane lifting mechanism? The electrical reasons need to be analyzed in detail according to the working principle of crane electrical transmission, mainly from two aspects of electrical equipment and electrical circuit. Generally, there are several reasons why the crane brake should be manufactured according to the drawing of system 1:
the reasons why the crane brake cannot be braked may be: the contact of the crane brake control circuit can become transparent, lighter and repairable, or the contactor iron core has oil dirt and cannot be adsorbed and released, resulting in the brake electromagnet coil or hydraulic thruster oil rdquo; The pump cannot lose power so that the brake is in the released state; There is a mistake in the design of the crane control circuit, so that the brake coil cannot lose power. It is convenient for the accurate selection and adjustment of detection points when starting operation in the control line; The test space is large, and the control link of first energizing and then opening the switch fails. When it drops back to zero, the failure of the control link of first tripping and then power failure will cause hook slipping
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