LH model electric Hoist Overhead Crane has such features as tight dimensions, low building headroom, light dead weight and light wheel load. They are applicable to the transfer, assembly, check and repair as well as load and unload at mechanic processing workshop, subsidiary workshop of metallurgical mills, warehouse, goods yard and power station They can also be used instead of common double-girder overhead crane at production workshop in light textiles or food industry. It has two kinds of classification, that is, light and medium, The working ambient temperature is generally -25℃～40℃. It is forbidden to work in environment with combustible, explosive or corrosive media.
Two operating methods, namely, on floor and in the drivers cabin, have been designed for such king of crane, the cabin is divided into open-style and closed style. The cabin can be installed on the left or right according to actual conditions, the operator can enter the cabin from one side, rear or top, which depends on the different users requirements.
QD model overhead crane with hook is mainly composed of bridge, running gear of crane, trolley and electrical devices, this type of crane has work duty of A5 and A6. 
QZ Overhead crane with grab is widely used in loading goods in port, factory, workshop and power plant, the work classification is heavy. The group classification is A6. 
QDY bridge foundry crane with hook is mainly used at the place where the molten metal is lifted. The working class of the complete machine is A7, and thermal-protective coating is added at the bottom of the main girder. The assembling and test of the crane conform to the document no. ZJBT［2007］375 which was issued by General Administration of Quality Supervision, Inspection and Quarantine of the Peoples Republic of China. The place where molten nonmetal material and red-hot solid metal is lifted also can refer to this document.
Environmental conditions：
1. The power of crane is three-phase AC; rated frequency is 50HZ; rated voltage is 380V;
2. The temperature of working environment is -10℃~+60℃;
3.The relative humidity is no more than 50% when the temperature is +40℃;
4. If the requirements are more than above-mentioned, it shall carry out the requirements in the purchase contract as the user asks.
QY Insulated hook overhead crane are applicable to handle material in the plants of electrolytic nonferrous metals such as magnesium, aluminum. The crane consists of four main parts, namely, the box type girder bridge structure, the travelling mechanism, the trolley and the electric equipment. Several insulated devices are applied in suitable positions to protect operator.
The crane is used in heavy duty service, with double brakes in the hoisting. All movement of crane is controlled from the cabin.
The blast-proof performance of all electrical machines and electric appliances of QB model blast-proof overhead crane with hook conforms to the prescriptions of GB3836.2-2000 Blast-proof Electrical Apparatus for Explosive Atmosphere Part two: Flameproof Type; the performance of complete machine conforms to the prescriptions of JB/T5897-2006 Blast-proof Bridge Crane. The crane is qualified inspected by inspection unit of blast-proof product which is appointed by the state. The crane has got Certification of Conformity of An Instrument for Explosive Atmosphere. The signs of blast-proof are ExdⅡBT4 and ExdⅡCT4 respectively.
The product is applicable to the place in the factory where the capability of transmitting-explosive is no higher than gradeⅡB orⅡC, and where has mixture of detonating gas which is composed of flammable gas or steam, whose ignition temperature team belongs to T1-T4 team, and air. The applicable danger area is Area 1 or Area 2 (see GB3836.1-2000 for detail).
The product shall be operated on ground; it also can be cab-operated as the user needs. The working class is middle.
Garbage grab crane is the key device used in the garbage feed system of different kinds of Garbage-Cremation Power Plant in modern city. It is located at the top of garbage storing pit, and is mainly used for operation of feeding, conveying, mixing, fetching and weighing of the garbage. The garbage grab crane manufactured by our company can implement lifting and conveying strictly to ensure normal work of Garbage-Cremation Power Plant. This crane can be controlled by hand, semi-automatically or automatically.