Winding device and lifting machine

Abstract

The invention provides a winding device and a lifting machine. The winding device comprises a base, a winding cylinder, a driving part, a sensor and a control system; the winding cylinder is located on the base and can rotate relative to the base, and the driving part is used for driving the winding cylinder to be relative to the base to rotate; a rotating disc is arranged at one end of the wind cylinder and rotates along with the winding cylinder, and a marking part is arranged on the rotating disc; the sensor is fixed on the base; the control system is electrically connected with the sensor and the driving part; the sensor detects the position information of the marking part, and transmits the position information to the control system, the control system receives the position information and records the receiving time of the position information to calculate and control the rotating speed of the winding cylinder. According to the winding device, the position information of the marking part is detected through the sensor, the control system can calculate and control the rotating speed of the winding cylinder, the ascending speed and the descending speed of a lifting hopper are controlled accordingly, and emergency braking is achieved.

Description

Technical field [0001] The present invention relates to the field of engineering machinery, and more specifically, to a hoisting device and a hoist including the hoisting device. Background technique [0002] At present, when the lifting concrete batching plant is working normally to produce concrete, the lifting bucket will stop in the air when the lifting bucket is rising and descending. The lifting bucket has a heavy load and high requirements for the control system during operation, in order to improve production efficiency , The hoisting bucket is set to wait for the material at a high position, that is, before the upper guide rail arc turn (before the hoisting bucket starts to turn). In order to ensure the high reliability of the lifting bucket, the upper rail is provided with a waiting material level sensor switch, a stop position sensor switch and a limit switch. When the lifting bucket stops at a high position, it hits the arc fork in a short time after restarting, and ...

AI Technical Summary

Problems solved by technology

When the lifting bucket stops at a high position, it will touch the arc branch in a short time after restarting, and the lifting bucket will start to turn over. After the lifting bucket’s turning angle reaches a certain angle, it will start to deliver aggregates. During this process, the lifting bucket has a large impact force. The motor load is heavy, the hoist starts and stops frequently, and the hoist bucket goes up and down frequently. When the hoist bucket goes up and carries a heavy load, there is a risk of walking or even falling off the bucket, and when the hoist bucket goes down, it is easy to go down too fast.

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