From the hand-cranked machine, hand cross-top, hand jack, rack lifting machine, hydraulic lifting machine 
 First, the scope 
 Lifting machine, lifting tools, hand Kua top of hand - in a variety of projects falling-rising role as the top and the collapse of lifting. Play a good role to improve efficiency, reduce labor intensity. The product design is reasonable, easy to operate, flexible and reliable, widely used in the origin of factories, warehouses, docks, railways, construction stack, especially suitable for mobile installation of various machinery and equipment, motorcycle repair, heavy object lifting. 
 Second, the use of 
 1, according to the center of gravity of the heavy weights collapse placement lifting so without overturning; 
 The area of ??the foot plate, lifting and landing must collapse or collapse all contact with heavy objects, in order to ensure sufficient strength to prevent heavy objects fall; 
 Placed collapse the top of the ground should be solid, such as the ground is softer, should be added under the base pad, destroyed the top center position on the pad; 
 4 should be empty before using shake once, from low to high, check for stuck or anomalies, everything is normal to use. 
 Third, pay attention 
 Before use must be aware of the weight of heavy objects from the Road machine use is strictly forbidden to overload in order to avoid equipment damage accident; 
 2, if the heavy objects more than nominal weight, required the simultaneous operation of multiple Kua top, keeping the multiple collapse the top of the load evenly up and down speed remained stable; 
 Heavy objects lifting, if you can not be uninstalled in a short period of time, you must fill in the heavy objects on the following auxiliary pad as supporting ground clearance equal to plus and heavy objects. 
 Fourth, the works 
 Lifting machine (hand Kua top) is a hand-cranked power through the gears to drive the shell lifting or falling. Unloaded weight or decrease the left to move the pawl crank reverse rotation, manual control its speed. 

 Technical parameters from the Road Machine (KD series hand Kua jack) 
 Project / specification / Model KD3-5 KD7-10 
 Rated for a maximum top weight (T) 5 10 
 Rated maximum the Kua weight (T) 3 7 
 Maximum lifting height (MM) 200 250 
 Collapse of the foot the lowest position (MM) 60 70 
 Collapse the top of the highest position (MM) 260 320 
 Roof of the lowest position (MM) 520 630 
 Roof top position (MM) 720 880 
 Weight (KG) (approximate) 18.5 30