1. Simple lifting machinery for vertical lifting of heavy objects.
It has small weight and compact structure.
There are manual and electric.
Manual tackle.
The drag chain is pulled by human, and the chain reel is driven by worm and worm wheel to make the weight rise and fall.
The use of load-based self-braking, the heavier the load, the greater the braking torque, safe and reliable.
The working range is a vertical line under the hook.
Nylon pulley aluminum lifting block:
Application: Suitable for lifting poles, towers, wire, hoisting equipment and live work, etc.
Features: light weight, good wear resistance of wheel, no damage to wire rope and rope.
The form has hook type, ring type, single door, double door.
Electric block.
The motor drives the gear transmission mechanism, wire rope drum and hook pulley to make the heavy weight rise and fall.
The case is a steel wire rope drum, which is connected with a motor and a gear transmission mechanism with a brake.
There are lifting lugs on the upper part of the middle shell.
After being fixed, heavy objects can be lifted vertically.
The trolley can also be attached to the running trolley and become a running load trolley, which can travel along the overhead track and transport materials within or between workshops.
2, according to the number of wheels are divided into single-door block, two-door block and multi-door block.
It can be divided into hook type block, chain ring type block, ring type block and hanger type block according to the connection mode of the block and hanger.
Generally small and medium sized block belongs to hook type, chain ring type and ring type, and large block using ring type and beam type.
According to the contact between the wheel and shaft can be divided into two kinds of sliding bearing and rolling bearing installed between the wheel and shaft.
Whether can open according to splint to cent, have open block and close block.
The splint of the open tackle can be opened for rigging. It is usually a single door tackle. It is often used as a guide tackle at the bottom of the lever.
Tackles are divided into fixed tackles and moving tackles according to the way they are used.
Easy to use, a wide range of USES, can be manual, motor.
It can change the direction of the pulley block and pulley block traction cable and lift or move the heavy weight of the object, especially by the pulley block combined composition, with winch, mast or other lifting machinery, widely used in construction installation.
It is mainly used in the production and construction of factories, mines, agriculture, electric power, buildings, machinery installation of docks, docks, warehouses, cargo lifting and so on.
