For lifting hoist five technical parameters

First, from the weight of G
From the weight lifting heavy objects refers to the mass, in kg or t. Can be divided into nominal weight, maximum weight, total weight, effective from the weight and so on.
1. Nominal weight Gn
Rated weight  lift hoist  can lift spreader or materials with separable attachment (such as grab, electromagnetic chuck, balance beam and other quality combined.
2. Total weight Gz
Total weight of lift hoist can lift spreader and materials can be divided into long-term fixed together in lift hoist on the spreader and drama (including the hook, pulley blocks, lifting wire rope and  hoist and trolley  in the following other lifting objects) of the total mass.
3. Effective from the weight of Gp
Effective from the weight lift hoist can lift the net mass of the material.
This parameter is required as follows:
First, on the plate lift hoist lifting weight calibration, usually refers to the lift hoist the rated capacity should be eye-catching structure represents a significant  lift hoist  position.
Second, the type of lifting hoist boom, its nominal weight is varies with the magnitude of its crane lifting torque characteristic index is used to characterize. Signage on the calibration value is the maximum lifting capacity.
Third, with separable spreader (such as grab, electromagnetic chuck, balance beams, etc.) of the lift hoist  lifting and material quality of their total rated capacity serving to allow lifting the quality of materials is a valid starting weight.
Two, lifting height H
Lifting height is lift hoist orbit top (or ground) to extract the location of the device limit the vertical distance, in units of m. Usually hook, the hook and loop count to hook center; grapple and other containers, count to bottom of the container.
1. Decreased depth h
When the extract device can be placed below the top surface ground or in orbit, its distance is called devolution down depth. Ie spreader minimum working position and lift hoist horizontal vertical distance between the supporting surface.
(2) Lifting range D
Hoisting and lifting height range is decreased depth, ie, the highest and lowest spreader vertical distance between the working position.
Third, the span S
Span bridge type lift hoist means run horizontal distance between the centerline of the track, in units of m.
Bridge-type crane hoist trolley orbit as the distance between the center line of the car gauge.
Ground rail running jib crane hoist orbit as the distance between the center lines of the lift hoist gauge.
Fourth, the magnitude of L
Rotating jib lift hoist means the rotation center line of the amplitude extract unit and the horizontal distance between the vertical line, in units of m. Non-rotating type electric hoist jib crane spreader magnitude refers to the centerline axis of the boom between the rear axle or other typical water level distance.
When the minimum or trolley jib angle position and rotation center distance lifting hoist maximum amplitude of the most significant; vice versa for the minimum amplitude.
Five working speed V
Operating speed is the working body lifting hoist stable operation at rated load speed.
1. Lifting speed Vq
Lifting speed refers to the lifting hoist in steady-state operation, the rated load of the vertical displacement of the speed in m / min.
2. Carts running speed Vk
Carts running speed is the horizontal lifting hoist on road or track running speed with rated load, in units of m / min.
3. Car speed Vt
Car speed refers to the steady state of motion, the car on a level track running speed with rated load, in units of m / min.
4. Change speed V1
Change speed is the steady state of motion, the luffing plane flown minimum rated load, from the most significant to the smallest horizontal displacement amplitude average linear velocity in m / min.
5. Walking speed V.
Walking speed refers to the road condition, mobile lifting hoist rated load hanging the smooth running speed in km / ho
6. Rotation speed ω
Steady rotational speed is the state of motion, lifting hoist rotation around its center of rotation speed in r / min.