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(I) Power supply safety sliding contactline series products are developed and produced by our factory based on relevant foreign materials and advanced products, and in response to the accidents that are prone to occur with exposed sliding lines in domestic lifting facilities. This series of products has three types: composite type, square tube type, and split type safety sliding contact lines, which are patented products of our factory.
(II) The power supply safety sliding contact line series products developed by our institute are complete in variety and widely used. They can be used for lifting machinery in factories, mines, warehouses, stations, ports, and docks, such as electric hoists, beam and bridge cranes, elevators, automated production lines, and other mobile conductive equipment.
(III) Users can correctly select the appropriate specification of power supply safety sliding contact line according to the model of lifting machinery, so as to meet the power consumption of lifting machinery, and also achieve technical and economic indicators such as power saving, energy saving, and reduced energy consumption.
(IV) Correctly selecting the power supply safety sliding contact line is the key to obtaining the best technical and economic effects. According to reliability research, using this sliding contact line can improve the reliability of the system by two orders of magnitude. Users should refer to this manual in detail when selecting the power supply sliding contact line, fully understand the product performance, characteristics, etc., so as to obtain the best use effect.
II. Product working principle, characteristics, and uses
(I) Main components and their working principles
The power supply safety sliding contact line device consists of two main components, the conduit and the current collector, as well as some auxiliary components, as shown in the figure:
1. Conduit: It is a semi-enclosed special-shaped tubular component and is the main part of the safety sliding contact line. Inside it, 2-9 bare guide rails can be embedded as power supply conductors as needed. The guide rails are insulated from each other and from the shell, ensuring the safety of power supply. It also effectively prevents electric shock accidents for maintenance personnel during live maintenance. Each conduit produced by our factory is 4m in length and can be connected to any required length. Generally, conduits are made straight, but they can also be made into arc shapes according to special requirements.
2. The current collector is a set of brush shells that run inside the conduit. It is driven by a fork (or traction chain, etc.) installed on the power-consuming mechanism (such as a traveling crane, trolley, electric hoist, etc.), making it run synchronously with the power-consuming mechanism, and transmitting the 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 rails in the conduit.
(II) Product characteristics
1. Safety: The shell of the power supply safety sliding contact line 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, frost, and freezing attacks as well as contact with foreign objects. The product has undergone various environmental condition tests. The insulation performance is good, and there is no harm to maintenance personnel touching the outside of the power transmission conduit.
2. Reliability: The power transmission guide rails have excellent electrical conductivity, fast heat dissipation, high allowable current density, low impedance, and low line loss. The brushes are made of metal copper and carbon alloy materials with high electrical 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 safety sliding contact line device has a simple structure, high allowable current density, low resistivity, and low voltage loss. It can save about 10% of electricity. It uses plastic instead of steel and copper, has a novel design, requires no other insulation structure, no compensation wire, and is installed on the same side as the crane control room, saving installation materials and costs.
4. Convenience: The power supply safety sliding contact line device integrates multiple pole busbars into one conduit, making assembly simple. Its fixing brackets, connecting clamps, and suspension devices are supplied as universal parts. Installation, disassembly, adjustment, and maintenance are also very convenient.
(III) Uses: The power supply safety sliding contact line device can be used for electric hoists, electric beam and bridge cranes, stackers, automatic detection lines for electromechanical products, automated production lines, mobile electric tools and other mobile conductive equipment, as well as fixed busway installation in factories, mines, workshops, and office places.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
