Overview of SWL screw lift
The worm-gear screw elevator is a kind of basic lifting component that completes the functions of lifting, lowering, advancing, turning and so on through the worm gear drive screw, which has been listed as the JB/T8809-1998 standard.It is widely used in machinery, metallurgy, water conservancy, chemical industry, medical treatment, culture, health and other industries. It has the advantages of compact structure, small size, light weight, convenient installation, flexible use, good reliability, high stability, and long service life. , Can be driven directly by electric motor or other power, or manually.This series of worm gear screw elevators can be self-locking, with a load capacity of 2.5t～120t, a maximum input speed of 1500r/min, and a maximum lifting speed of 2.7m/min. There are different structural types and assembly methods, and the working environment temperature is between -20～100℃. In between, the lifting height is manufactured according to user requirements.
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2.1 Structure Type 1-The worm wheel and the screw are screwed together, and the screw is moved axially.
Type 2-The worm wheel and the screw are connected by a key, and the screw is equipped with a nut.The screw rod rotates, and the nut moves axially.
2.2 assembly type
Each structure type of the elevator is divided into two assembly types:
There are two assembly types for type 1 structure type: There are two types of assembly type for type 2 structure type:
Type A: The working end of the screw is on top; it moves upward. Type A: The working end of the screw is up, and the nut is up or down;
Type B: The working end of the screw is down; it moves down. Type B: The working end of the screw is on the bottom, and the nut is pressed down or pulled up;
2.3 Screw head type
Type 1 structure type The screw head is divided into four types: type I (cylindrical type), type II (flange type), type III (thread type) and type IV (flat head type)
Type 2 structure type The screw head is divided into two types: type I (cylindrical type) and type III (thread type)
2.4 Transmission ratio The worm gear transmission of the elevator is divided into two transmission ratios, namely ordinary (P) and slow (M).
2.5 Screw protection
The protection of type 1 elevator screw is divided into: basic type, anti-rotation type (F) and protective cover type (Z);
The protection of type 2 elevator screw is divided into: basic type and protective cover type (Z)