(1) the bucket hoist is the use of hopper band and the head wheel shaft friction torque for lifting material hopper, belt tension of not enough, will lead to a hopper belt. at this time, should immediately stop, adjustable tensioning device for tensioning hopper band. if the tensioning device can not cause the hopper with fully tensioned, illustrate the tensioning device range is too short, should be adjusted.
the right solution is : unraveling the hopper belt joint, so that the bottom wheel tensioning device to the highest position, the hopper band by lifting machine head in, through the head wheel and the wheels, and are connected end to end, with the hopper in the tension without tension state. then the tensioning device fully tensioned. the tensioning device of the regulating screw not utilized by the tensioning stroke shall be not less than the full stroke 50%.
(2) hoist overload hoist overload, increase of resistance moment, causing the hopper belt. this should reduce the material feeding quantity, and even feeding. if reduce the feeding amount, still can not improve the skid, may be sitting in the material piling machine too much or hopper by the tutor matter stuck, should be down to check, troubleshooting.
(3) head wheel shaft and a hopper with inner surface too smooth head wheel shaft and a hopper with inner surface too smooth, so that both the friction is reduced, leading to a hopper belt. then, in the drive shaft and a hopper with an inner surface coated with a layer of glue, to increase the friction force.
(4) the head wheel and the bottom wheel bearing inflexible turning head wheel and the bottom wheel bearings is ineffective, increase of resistance moment, causing the hopper belt. when the detachable gas or replacement of bearings.