Semi-gantry Crane Introduction

A semi-gantry crane is a crane whose support is built on the ground, and the cantilever beam extends to the working area, forming a semi-gantry appearance. It is usually used for light and medium lifting tasks, such as loading and unloading goods, repairing machinery and equipment, various applications in docks and factories, etc.

Operation mode of semi-gantry crane

The operation mode of semi-gantry cranes is mainly divided into three types: manual control, electric control and automatic control. Manual control is usually achieved by manually pulling ropes or chains, etc., which is simple to operate and suitable for smaller lifting tasks. Electric control is usually achieved through remote controls or control boxes, etc., which is easy to operate and suitable for medium-sized lifting tasks. Automatic control is achieved through computer control and sensors, etc., and can automatically perform complex lifting tasks.

Lifting capacity of semi-gantry crane

The lifting capacity of semi-gantry cranes is usually divided according to the weight of the load. The lifting capacity of light semi-gantry cranes ranges from hundreds of kilograms to several tons, and is suitable for small factories and workshops. The lifting capacity of medium-sized semi-gantry cranes ranges from tens of tons to more than a hundred tons, and is suitable for large factories and docks. The lifting capacity of heavy semi-gantry cranes ranges from hundreds of tons to more than a thousand tons, and is suitable for high-intensity lifting tasks such as large steel enterprises.

Cantilever beam structure of semi-gantry crane

The cantilever beam structure of semi-gantry cranes usually has two types: truss structure and beam-slab structure. The semi-gantry crane with truss structure has the characteristics of high strength and light weight, and is suitable for small and medium-sized lifting tasks. The semi-gantry crane with beam-slab structure has the characteristics of stronger bearing capacity and is more suitable for large lifting tasks.

Use environment of semi-gantry crane

The use environment of semi-gantry cranes is usually divided into indoor and outdoor. Indoor semi-gantry cranes are usually used in scenes such as factories and workshops, and are suitable for small and medium-sized lifting tasks. Outdoor semi-gantry cranes are usually used in scenes such as docks and ports, and are suitable for medium and large lifting tasks.

Structural features of semi-gantry cranes

The structural features of semi-gantry cranes include support, cantilever beam, trolley, car, lifting mechanism, electric control system and other components.

• Support: The support of semi-gantry cranes is usually built on the ground, and the weight and load of the entire crane are supported by the support. The support is usually made of steel structure with sufficient strength and stability to ensure the safe operation of the crane.

• Cantilever beam: The cantilever beam of a semi-gantry crane is one of its most important components. It extends to the working area and supports the lifting mechanism and load. The structure of the cantilever beam is usually divided into truss structure and beam-slab structure, which can be selected according to the needs of the lifting task.

• Car: The trolley is a component of a semi-gantry crane. It moves along the cantilever beam and is responsible for moving the load from one position to another. The trolley is usually composed of components such as motor, reducer, wheels and brakes.

• Trolley: The trolley is another component of a semi-gantry crane. It is responsible for moving the lifting mechanism on the trolley to the correct position for lifting and lowering the load. The trolley usually consists of components such as motor, reducer, wheels and brakes.

• Hoisting mechanism: The hoisting mechanism is one of the core components of the semi-gantry crane, responsible for lifting and lowering the load. The hoisting mechanism usually consists of components such as winch, wire rope, hook and weight meter.

• Electric control system: The electric control system is another important component of the semi-gantry crane, which is responsible for controlling the operation of the crane. The electric control system usually includes components such as control box, cable, motor and sensor.

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