The crane in the steel production process can participate in a particular process operation, the basic structure and general overhead cranes are similar, but in lifting a small car is also equipped with a special working body or device. This work is characterized by crane frequent use conditions, a Hand Pallet Truck level of work, there are five main types weight should be along the upper, lower, left, right, front and rear directions, and can at the same time in the three-dimensional movement direction. In addition to the downward movement, the remaining five should set the direction of the terminal endpoint protection.
(2) be a reliable braking device, even in case of power failure, the weight will not fall because of its own weight.
3 should have a greater speed range, in the stationary state begin to exercise, start at the lowest speed began to accelerate, acceleration is not too large.
4 To prevent overloading or speeding danger may arise, to have short-term overload protection. Overcurrent relays generally used as a circuit overload protection.
5 To beneath pressure protection link.
6 have security measures.