Special sliding contact line for cranes

Crane trolley bus is a power supply equipment used for hoisting operations. Here is a detailed introduction to the crane trolley bus:

I. Definition and Application

Crane trolley bus, also known as crane sliding contact line, is mainly used to supply power to moving cranes or lifting equipment. It hides the power circuit inside the beam, providing a seamless power supply method and enhancing the stability and reliability of the crane.

II. Structure and Working Principle

The crane trolley bus is mainly composed of two parts: the slide rail and the current collector:

1.Slide rail: The fixed part connected to the power supply, usually formed by connecting rails with a single length of 4 meters or 6 meters per piece. The material and structural design of the rail give it good electrical conductivity and mechanical strength, ensuring stable current transmission and long-term operation of the equipment.

2.Current collector: The sliding part that can slide on or inside the slide rail and contact the copper bar to pick up electricity. The current collector is used to connect with the moving motor and transmit electric power to the crane or lifting equipment.

In terms of working principle, the crane or lifting equipment slides on the trolley bus and obtains electric power through the motor driving the transmission device, thereby realizing the hoisting and transportation of items.

III. Types and Characteristics

There are various types of crane trolley buses, such as single-pole combined trolley buses, multi-pole tubular trolley buses, etc. These types differ in structure, performance and application scenarios:

1.Single-pole combined trolley bus: It has the characteristics of convenient installation and fast speed, with a speed of up to 500 meters per minute (imported trolley buses may be higher). Its structure is relatively simple, with low failure rate and long service life, and it is one of the common types of crane trolley buses.

2.Multi-pole tubular trolley bus: It can be combined according to different pole numbers to meet different current requirements. However, the multi-pole trolley bus has a hollow internal structure, and the expansion and contraction of the carbon brush of the current collector is controlled by a spring, so its service life and failure rate may be relatively high.

IV. Application Scenarios

Crane trolley buses are widely used in various occasions requiring hoisting operations, including but not limited to:

1.Large-scale projects: Such as bridge construction, factory building construction, etc. Cranes need to carry out a large number of lifting operations, and the crane trolley bus can provide continuous and stable power supply.

2.Power maintenance work: During the inspection and maintenance of power equipment, the crane trolley bus can directly transmit power to the maintenance point, improving the safety and work efficiency.

3.Municipal engineering: Such as road greening, lighting installation, etc. The crane trolley bus can directly transmit power to the site to provide stable and reliable power supply.

V. Installation and Maintenance

1.Installation: The installation of the crane trolley bus should ensure the straightness and parallelism of the rails, and the smooth sliding of the current collector. At the same time, the appropriate installation method and location should be selected according to the specific needs of the equipment and the on-site environment.

2.Maintenance: Regularly inspect and maintain the crane trolley bus, including checking the wear of the rails and current collectors, the looseness of fasteners, etc. Problems should be adjusted and replaced in time to ensure the normal operation and safe use of the equipment.