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Single-pole aluminum busbar, single-pole copper busbar, multi-pole safety busbar, double-hook copper busbar
Busbar, also known as sliding conductor, is a set of power transmission devices that supply power to moving equipment.
It is mainly divided into commonly used busbars such as single-pole aluminum busbar, single-pole copper busbar, steel busbar, multi-pole tubular busbar, seamless busbar, and copper contact wire. Single-pole busbar, multi-pole tubular busbar, and seamless busbar belong to safety busbars, while steel busbar belongs to non-safety busbar.
Since moving equipment needs to constantly change positions, it must be able to obtain power supply at any time in each different position; otherwise, it cannot continue moving. At this point, the busbar came into being. Several conductors are laid parallel along the running track of the moving equipment and connected to the power supply. On the moving equipment, a current collector is installed that can draw power from the conductors. In this way, when the equipment moves, the current collector moves synchronously with the equipment and continuously obtains power from the conductors to supply the equipment, allowing it to continue moving. The device composed of these conductors and current collectors is called a busbar.
The power supply busbar device consists of three main components: the sheath, the conductor, and the current collector, as well as some auxiliary components.
1. Sheath: It is a semi-enclosed tubular component and the main part of the busbar. Inside, 3-16 bare guide rails can be embedded as power supply conductors as needed. The guide rails are insulated from each other to ensure the safety of power supply and effectively prevent electric shock accidents during live maintenance. The length of each duct produced by the manufacturer varies, and they can be connected to any required length. Ordinary ducts are made in straight shapes, but can also be made into arc shapes according to special requirements.
2. Conductor: The main material is copper. According to its cross-sectional area, the common ones are 10 square millimeters, 16 square millimeters, and 25 square millimeters.
3. Current collector: It is a set of brush housings that run inside the duct, driven by a fork (or traction chain, etc.) installed on the power-consuming mechanism (such as overhead crane, trolley, electric hoist, etc.), so that it moves synchronously with the power-consuming mechanism and transmits the electrical energy from the guide rails and brushes to the motor or other control elements. The number of poles of the current collector brushes is 3-16, corresponding to the number of poles of the guide rails in the duct.
(II) Product Characteristics
1. Safety: The shell of the power supply busbar is made of engineering plastic with high insulation performance. The shell protection level can reach IP13 and IP55 as needed, which can protect against rain, snow, and freezing attacks as well as contact with hanging objects. The product withstands various environmental conditions. It has good insulation performance and causes no harm to maintenance personnel who touch the outside of the power transmission duct.
2. Reliability: The power transmission guide rail has excellent conductivity, fast heat dissipation, high current density, low impedance, and low line loss. The brushes are made of metal graphite material with high conductivity and high wear resistance. The current collector moves flexibly, has good directional performance, and effectively controls contact arcs and series arcs.
3. Economy: The power supply busbar device has a simple structure, using copper bars with high current density, low resistivity, and low voltage loss as the main conductive body. It can save about 6% of electricity, realize replacing steel with plastic and copper with plastic, has a novel design, requires no other insulation structures or compensation wires, is installed on the same side as the crane control room, saves installation materials and costs, and its overall cost is roughly the same as that of bare steel sliding wires.
4. Convenience: The power supply busbar device integrates multiple busbars into one duct, making assembly simple. Its fixed brackets, connecting clamps, and suspension devices are supplied as universal parts, making installation, disassembly, adjustment, and maintenance very convenient.
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
