Specification for the use of single girder cranes

1. In order to improve the service life of crane electrical equipment, electrical equipment such as contactors in the control box must be kept clean to prevent leakage, breakdown, and short circuit.

2. When using the suspension wire to conduct electricity, the corner rust and dirt on the slide rail of the trolley should be removed at any time to maintain the normal operation of the traction pulley. Track inspection: mainly observe whether the track is straight, whether the pressing plate is firm, and whether there is any looseness. If you find that the trolley is stuck while walking, you should try to correct the track or adjust the wheels.

Safety operating rules for single-beam cranes: long-term hanging in the air is not allowed, and personnel are not allowed to leave their posts when lifting objects. Crane is a kind of multifunctional hoisting machinery that can lift and carry heavy objects vertically and horizontally within a certain range. Also known as cranes, aerial cranes, and cranes. The main parameters of the crane are the parameters that represent the main technical performance indicators of the crane, are the basis for the design of the crane, and the important basis for the safety technical requirements of heavy machinery. It is forbidden to work after drinking and chatting during work. After the work is over, the crane should be driven back to the left side of the gate, and the operating button switch should be hung at the designated position. When hanging the operation button switch, pay attention to how to hang it before dismantling and how to hang it when putting it back to prevent rainwater from flowing into the button switch.

1. Assembly of traveling trolley

First install the trolley on the track with the trolley fixing pin and fasten it with bolts. A cantilever crane is an industrial component and a crane with a lighter working strength. It consists of a column, a swing arm, a swing drive device and an electric hoist. It has the advantages of light weight, large span, large lifting capacity, economy and durability. The driving wheel should be in contact with the rail surface, and the clearance between the driven wheel and the rail surface should meet the requirements of the "Electric Hoist Bridge Crane Standard". After the trolley is assembled, its main dimensional deviation should meet the requirements of the electric single-girder bridge crane standard.

2. Girder installation

The main beam and the end beam are connected by high-strength bolts to form a bridge structure. The electric hoist has a compact structure, the motor shaft is perpendicular to the drum shaft, and a worm gear transmission device is adopted. Its disadvantages are: large length, large width, heavy structure, low mechanical efficiency, and difficult processing. The hydraulic system adopts dual control, overflow control valve and magnetic contact pressure gauge can control the pressure. The electrical control part adopts low-voltage control, which improves the safety of the control system.