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Henan Tongda Lifting Equipment Co., Ltd. was established in 2015 and is located in Zhengzhou City, Henan Province. Convenient transportation and excellent location. Henantongda is a trading and manufacturing company. It specializing in the manufacture and sale of lifting equipment, road and bridge equipment, engineering machinery equipment, subway shield machine equipment, tower cranes and construction lifts. Our main products are: all kinds of common gantry cranes (container gantry cranes, grab gantry cranes, electric hoist gantry cranes, hook gantry cranes), manual and electric single beam and double girder bridge cranes (QZ grab double girder bridge cranes, QD hook bridge cranes, QC electromagnetic bridge cranes, LH electric hoist double beam crane), and various crane accessories. We provide professional support services, project management, transportation and installation, maintenance, logistics and other service support. Tower crane and lift construction.
Coupling is used in various host products supporting , the surrounding environment is more complex, such as temperature, humidity, water, steam, dust, sand, oil, acid, alkali, corrosive media, saline, and radiation conditions, is one of the important factors that must be considered in the choice of the coupling. For the high temperature, low temperature, oil, acid and alkali medium, the quality of work, should not use the general rubber flexible coupling of elastic element material, should choose the metal elastic element flexible coupling, such as a diaphragm coupling, serpentine spring coupling. The role of the coupling on the crane: Mainly used on the crane as the connection between shaft and shaft of each transmission to transmit torque and torque. The coupling has two types: rigid coupling and compensating coupling: one can only be used as a coupling, and the coupling can not be compensated for the axial and radial displacement between the connected shaft and the shaft. It is a rigid coupling. Two, a coupling that not only functions as a connection but also compensates for the axial and radial displacement between the connected shaft and the shaft is called a compensating coupling. Compensated couplings are more widely used on cranesYour customized type and EPT is available
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