bridge gantry crane

bridge gantry crane

2013年8月9日星期五

LD electric single-girder crane structure and performance


 Main structure and performance
LD electric single-girder  hoist gantry crane  mainly by the bridge, electric hoists, traveling mechanism, electrical equipment four major components.
Mainly composed of bridge girders, beams, trolley conductive frame, control room and other accessories form. Mainly by steel girders spliced ​​into U-shaped, and then with a box beam welding solid web beams, and in accordance with the corresponding standard prefabricated camber; beam is welded into a steel plate box, in the box beam boring to install wheels; girders and beams in the plate between the use of form and join and become one with the bolt.
Electric hoist is generally outsourced professional manufacturer of the finished product. Electric hoist can lift heavy objects and move longitudinally along the main beam, its structural features and performance described in the relevant electric hoist manual.
Traveling mechanism is the use of separately driven forms, install two carts drives. Driving or braking is done by the cone brake motor, transmission is the use of "opening and closing" type gear drive, driving wheel rotation to complete the operation of the machine movements.
Electrical equipment according to the needs of users, divided into the cab manipulation, the ground or the remote control button operation, while the corresponding form different configurations. Various forms of manipulation overhead gantry crane  use more squirrel cage motors, electrical control is relatively simple, the user can refer to the electrical schematics and electrical wiring diagram for electrical assembly and wire laying.
This product is a ensure operator safety, the control part adopts safe voltage 36V, electric hoists and  bridge gantry crane   are equipped with full safety devices, such as from the ceiling level switch, end travel limit switch.
b electric hoist operation using cables or sliding-contact power transmission device feed.
c carts conductive system uses a trolley line or cable.
Safety and other
As a form of manipulation of the cab, its suspension and the supporting parts must be solid and reliable connection.
b Ground button operation in the form of buttons, cables, wire rope with a corresponding button box and cables used to carry gravity.
c When storing the product before installation, should have sufficient strength supporting frame paving, bridge work at state store.
d outdoor storage, protective measures should be rain, especially transmission parts and electrical equipment, should be waterproof, anti-rust, anti-collision, anti-theft measures.

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