Slide Contact Line
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Mobile equipment needs to constantly change positions due to movement, and at each different position, the mobile equipment must be able to obtain power supply at any time, otherwise it cannot continue moving. At this point, the slide contact line came into being. Several conductors are laid parallel along the running track of the mobile equipment and connected to the power supply. On the mobile equipment, a current collector that can draw power from the conductors is installed. 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 slide contact line.
The power supply slide contact line device consists of a protective cover, conductors, and current collectors as the three main components, along with some auxiliary components.
1. Protective cover: It is a semi-enclosed tubular component and the main part of the slide contact line. Inside, 3-16 bare guide rails can be embedded as power supply conductors as needed, and each guide rail is insulated from the others to ensure the safety of power supply. It also effectively prevents electric shock accidents for maintenance personnel 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. Conductors: The main material is copper, and common cross-sectional areas include 10 square millimeters, 16 square millimeters, and 25 square millimeters.
3. Current collector: It is a set of brush shells operating inside the duct, driven by a fork (or traction chain, etc.) installed on the power-consuming mechanism (such as cranes, trolleys, electric hoists, etc.), allowing it to move synchronously with the power-consuming mechanism. It transmits electrical energy through the guide rails and brushes to the motor or other control elements. The number of poles of the current collector brushes ranges from 3 to 16, corresponding to the number of guide rail poles in the duct.
(2) Product Features
1. Safety: The shell of the power supply
slide contact line is made of engineering plastic with high insulation performance. The shell protection level can reach IP13 and IP55 as needed, providing protection against rain, snow, ice, and contact with hanging objects. The product withstands various environmental conditions. It has good insulation performance and poses no harm to maintenance personnel who touch the outside of the power transmission duct.
2. Reliability: The power transmission guide rails have 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 with good directional performance, effectively controlling contact arcs and series arcs.
3. Economy: The power supply slide contact line 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, achieving the replacement of steel with plastic and copper with plastic. The design is novel, requiring no additional insulation structures or compensation wires. It is installed on the same side as the crane control room, saving installation materials and costs. Its overall cost is roughly the same as that of bare steel slide lines.
4. Convenience: The power supply slide contact line device integrates multiple busbars into one duct, making assembly simple. Its fixed brackets, connecting clamps, and suspension devices are supplied as universal components, making installation, disassembly, adjustment, and maintenance very convenient.
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
