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The current collector is the main device that picks up electrical energy on the current collection side in a trolley wire system. It directly conducts electrical energy to the electrical equipment through sliding contact between the collector brush and the guide rail, thereby achieving mobile power supply for the system. The current collector consists of two parts: a tension device with a mechanical structure and a collector brush that directly slides in contact with the guide rail.
Power supply method
When considering the power supply points for safety trolley wire, the total number and total capacity of electrical equipment on the same span of trolley wire, the duty cycle, and the voltage drop across the entire length (voltage drop calculation can be based on the data in the previous guide rail parameter table) should be taken into account. The following power supply methods are generally available for user reference: ① Single-end power supply; ② Middle power supply; ③ Two-end power supply; ④ Power supply at 1/6 from both ends; ⑤ Power supply at 1/10 from both ends and three points in the middle, etc.
Installation instructions Before installing the trolley wire, first fix the angle steel brackets according to the installation form selected by the user and the suspension spacing of the trolley wire. At the installation site, slide the required suspension seats and one joint protective cover onto each 6-meter section of trolley wire, and also install one aluminum connector at one end. When installing the aluminum connector, note that only 1/2 of the aluminum guide rail should be inserted into the connector, leaving the other half for connecting the next guide rail. After these preparations are complete, suspend each trolley wire section one by one on the brackets and connect them all along the line. When connecting, tighten the screws of each joint. If the total length of the trolley wire exceeds 200 meters, expansion devices should be installed (our factory supplies expansion devices at any time). When connecting the incoming power lines, they can be connected at the joints of each 6-meter section. For specific connection methods, refer to the joint device diagram above. When installing curved trolley wire, the suspension distance should be shortened accordingly; the specific dimensions can be determined based on site conditions. When installing the current collector, first mount it on the matching square tube, then select an appropriate position that matches the trolley wire and fix it to the electrical equipment. Note that for good tracking performance and good contact between the current collector and the trolley wire, the current collector and the trolley wire should be installed in the same vertical and horizontal direction. Maintenance
Safety trolley wire should be inspected regularly during normal operation, because electrical equipment is the main production tool of every industrial and mining enterprise, and any slight error can directly affect the production efficiency of the factory. When inspecting the trolley wire, check whether the joints at each 6-meter section are loose or disconnected. When inspecting the current collector, check whether the moving parts rotate flexibly, whether the tension spring is fatigued, and the wear of the carbon brush (these conditions can affect the conductive performance of the trolley wire and the tracking performance of the current collector. Adjustments should be made in a timely manner). During holiday equipment overhaul periods, detach the current collector from the conduit and check the wear of the carbon brush and guide roller. If the brush protrusion is less than the specified effective length, replace it promptly. If the guide roller is severely deformed, it also needs to be replaced to maintain normal operation of the current collector and good contact of the brush, and to identify the cause. Among all components of the safety trolley wire, the carbon brush is the part that normally wears out. For environments with severe corrosive gases, also check the corrosion of brackets, suspension clamps, and tractors; take timely measures and apply anti-rust materials. If construction is carried out at the site where the trolley wire is used, do not impact, collide, or press heavy objects on the power transmission conduit, and do not place heavy objects on it. Prevent deformation and cracking of the conduit, which could affect use and cause safety accidents. After construction, immediately remove construction debris from the conduit. During normal maintenance, personnel are not allowed to step on the power transmission conduit or its brackets to prevent damaging the flatness of the entire line and causing accidents.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
