Tension conveyor belt often needs to apply the tensioning winch. At this time, the winch clutch should be tensioned to ensure that the drum pin shaft and clutch engage with each other and drive the drum to rotate. This transmission system is mainly driven by worm gear and worm gear. When the motor does not transmit torque, it can prevent the occurrence of loose rope by self-locking performance. When the rope needs to be laid, the motor should be reversed first, and the wire rope should be relaxed. After stopping the motor, the clutch can be released, and the belt can be relaxed slowly, so as to avoid excessive loosening of the rope and excessive tension, which will affect the stability of the traveling car, and at the same time, the problem of the wire rope disgrooving on the pulley can be prevented.

At present, many coal mining enterprises no longer use the tensioning winch, but JH-8 or JH2-5 type return winch, greatly simplifying the installation and maintenance of the winch.

Tail moving device

It is often necessary to move the tail position in the work of mining face. First, the distance of the tail moving forward is evaluated according to the actual situation, and then the intermediate parts of the conveyor belt such as the longitudinal beam of the conveyor, the belt roller and the H frame are removed, and the tail is pulled to the specified position through the hydraulic tail moving device.

The operation method is as follows:

With a pillar in the direction of moving in front of a good support, telescopic machine equipment in the lower part of the beam leg fixed mobile tail required ring chain end, and then the ring chain is connected to the other end of the hydraulic jack, jack is connected to the other end of the conveyor tail, in this case the jack piston rod is completely extended. The piston rod retraction can drive the tail forward;

After the piston rod retracted, the jack piston was extended and the chain on the piston rod was removed, and then tied again and began the next cycle, gradually in place.

In fully-mechanized mining face, if the belt conveyor needs to move the tail, it can be directly pulled forward by the comprehensive mining machine.

The fuselage telescopic

In the process of operation, the telescopic belt conveyor uses the fuselage to shorten or extend the whole machine transportation distance. The fuselage gradually elongates in the forward tunneling state, while shortening continuously in the backward coal mining state.

When the tail is extended backwards, if the traveling car is close to the side of the tensioning car, we can confirm that the conveyor belt in the storage bin is still retained. In this case, the method of elongating the fuselage is as follows:

The float coal covered by the bottom plate in the forward direction of the tail is cleared, the tensioning car clutch is opened in the state of loose belt, and then the tail is extended to a certain length by traction equipment or moving tail device to ensure that the overlap length between the tail and the reloading machine is the value;

According to the extension of the length of the roller, H frame and longitudinal frame and other intermediate frame;

The belt conveyor is tensioned through the tensioning winch to adjust the tail part of the machine to ensure flatness and prevent the conveyor belt deviation. If the position of the transfer machine has reached the limit position of the rear end of the tail, and the traveling trolley is close to the end of the nose, it indicates that the conveyor belt in the storage bin is exhausted. The conveyor belt should be stored in the storage bin through the belt winding device, and then the operation should be carried out in accordance with the established procedures. Fuselage shorten before, if machine moved forward and reprinted in the limit position, with the nose nearby store warehouse still can continue to store zone, according to the fuselage middle conveyor to shorten the length of the frame (corresponding length) from the tail end, in turn, dismantling, will reach the tail section and the tail skid lower float coal, and its tail by moving the tail device will move forward and and start the tensioning winch, The excess part of the conveyor belt is stored in the storage bin, the tail of the leveling machine is aligned with the conveyor body, and the conveyor belt is tensioned by the tensioning car.