What is the Requirement for Belt Conveyor Restart-up?

When the belt conveyor stops , restart-up belongs to overload start. Thus it requires belt conveyor equipped with a frequency converter in order to overload start. Here PK Machinery will summarize the requirement of belt conveyor restart-up.

Belt conveyor in the pick-up for overloading startup, motor output torque, which every support to overcome below the belt between the wheel and the roller shaft caused by static friction torque, also want to overcome the material on the belt tension caused by the downward drag torque.

coal belt conveyor

Materials on the belt tension caused by the downward drag torque is constant.But the static friction force is much larger than the dynamic friction, making it in order to overcome the initial startup of the static friction torque than the normal run-time dynamic friction torque caused by the much larger.

The inverter must have the function of the large starting torque at low speed.Actually in the process of starting, as a result of the belt scale, each wheel is time order one by one according to the rotation, will not rotate at the same time.Even if the wheel rolling, because of low speed between roller and roller shaft lubrication is not good, will be very acerbity, the dynamic friction is unstable, so low starting torque has the certain fluctuation.

fixed belt conveyor

So this kind of big starting torque at low speed is the need to maintain a certain period of time, usually at least a few seconds.The length of the belt and the minimum speed startup, and scalability of the belt.Because of the low speed, and startup torque and speed fluctuation will be big.
Further more information, welcome to contact us: www.pkmachinery.com

The Daily, Weekly, Monthly Belt Conveyor Check

When using the belt conveyor, less daily check and maintenance or do not pay attention to maintenance will greatly reduce the service life of the belt conveyor, when the belt conveyor problems occur, it will affect the work efficiency, so regular inspection for belt conveyor parts is needed.
Daily check
Mechanical items: inspect the guardrail, bridge, roller, pulley, turnabout pulley and belt.
Electrical items: inspect the anti-skid device, deviation switch, emergency stop switch, tear detection device, anti-reverse device.

Weekly check
Mechanical items: inspect the driving wheel, guide wheel section, reducer, inspect the machine's tail, check tensioning device and pull rope device.
Electrical items: inspect the main motor, inverter, filter, repair and inspect the main transformer wiring, electrical control, power system.
Monthly check
Mechanical items: inspect the rope wheel, transition wheel, guide wheel, driving wheel, belt wheel, tensioning car and check the oiling.
Electrical items: inspect the fastening bolts, fast switch; the maintenance and repair of commutator, limit protection, emergency stop protection and the alarm system. 

 

Safety Cautions of Fixed Belt Conveyor

Safety Cautions of Fixed Belt Conveyor

In the process of daily use,many users may use the wrong way to operate the belt conveyor.It will not only result in conveyor damage, but also harm to the operating personnel. Please pay attention to the following safety operating methods in order to utilize the fixed belt conveyor better.

Before the fixed belt conveyor put into use,uses should attention the following aspects.

1.Install the fixed belt conveyor according  to the prescribed installation methods

2.Check the running part of the belt buckles and bearing device is normal, whether the protective equipment is complete

3.The temperature of the working environment and delivery of materials shall not exceed 50 ℃ and lower than -10 ℃

Fixed Belt Conveyor

4.No pedestrians or take stand by the conveyor belt

5.Ensure the conveyor motor insulation is good

During the operation of belt conveyor,users can not ignore the following aspects.

1.No-load start the belt conveyor. Functioning rear can into the material.

2.When the conveyor is running the series, we should begin the discharge end, a sequence start. 

3.Be sure to stop into the material and then stop

4.Forbidden to pull the belt by hands,in order to avoid the accident

Sew Belt Conveyor Motor