What Are The Components Of A Single Girder Bridge Crane?

What are the Components of a Single Girder Bridge Crane?

 

A single girder bridge crane, also known as an overhead crane, is a type of crane that utilizes a single girder to support and hoist heavy loads.
 

Single-girder bridge cranes are generally composed of bridge frames, trolleys, electrical devices, safety devices, etc.;
 

The bridge running mechanism, also known as the cart running mechanism, is composed of a motor, a reducer, a brake and wheels. Divided into centralized drive and decentralized drive.
 

The lifting trolley of the bridge crane consists of:
 

1. Lifting mechanism, 2. Car running mechanism, 3. Car frame, 4. Safety device
 

(1) The lifting mechanism is composed of a motor, a transmission device, a winding device, a pick-up device and a braking device.
 

(2) The trolley running mechanism is composed of motor, coupling, reducer, wheel, brake and so on.
 

(3) The trolley frame is mainly composed of longitudinal beams and beams;
 

(4) The safety devices include: ①. Railing; ②. Limit switch; ③. Buffer (to prevent the limit switch from malfunctioning); ④. Similar to the front of the locomotive).
 

 

The following are the main components of a single girder bridge crane and their respective functions:

 

1. Girder

 

The girder is the main horizontal beam that runs the length of the crane and supports the weight of the load. It is usually made of steel or aluminum and can be either a box or an I-beam. The size and weight capacity of the girder depend on the lifting requirements of the crane. The girder is supported by the end trucks, which run on rails or tracks along the length of the building.

 

 

2. Hoist

 

The hoist is the component that lifts and lowers the load. It consists of a motor, gearbox, drum, and wire rope or chain. The hoist is attached to a trolley that moves along the length of the girder. The hoist is operated by the crane operator using a control panel.

 

3. Trolley

 

The trolley is the component that moves the hoist along the length of the girder. It consists of wheels, a trolley frame, and a hoist attachment point. The trolley is also operated by the crane operator using a control panel.

 

4. End Trucks

 

The end trucks are the components that support the girder and allow it to move along the rails or tracks. They are located at the ends of the girder and consist of wheels, a motor, and a gearbox. The end trucks are connected to the main power source and are operated by the crane operator.

 

 

5. Control System

 

The control system is the component that allows the crane operator to control the movement of the crane. It consists of a control panel, pendant control, or remotely operated control system. The control system controls the movements of the hoist, trolley, and end trucks . The operator uses the control system to move the crane in different directions, lift and lower the load, and stop the crane when required.

 

6. Electrical System

 

The electrical system is the component that provides power to the crane's motor, hoist, and control system. It consists of wiring, switches, fuses, and circuit breakers. The electrical system is designed to provide safe and reliable power to the crane. It is usually connected to the main power source of the building or facility.

 

7. Safety Features

 

Safety features are essential components of a single girder bridge crane. They are designed to ensure the safety of the crane operator, the load, and other workers in the vicinity. Major safety features include limit switches, overload protection, emergency stop, and warning systems . The limit switches prevent the crane from moving beyond its intended limits, while the overload protection system prevents the crane from lifting a load heavier than its capacity. The emergency stop button stops the crane in case of an emergency, while the warning system al erts the workers of the crane's movement.