DARUI Electric recommends
The current collector is the main device for picking up electrical energy on the current collection side in a trolley busbar system. It directly conducts electrical energy to the electrical equipment through sliding contact between the carbon 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 carbon brush that directly slides in contact with the guide rail.
Power supply method
Safe trolley busbar should be inspected regularly during normal operation, because electrical equipment is the main production tool in every industrial and mining enterprise, and any slight error will directly affect the production efficiency of the factory. When inspecting the trolley busbar, check whether the joints every 6 meters are loose or detached. 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, etc. (These conditions will affect the conductive performance of the trolley busbar 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 extension of the carbon brush is less than the specified effective length, replace it in a timely manner. 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 carbon brush, and to identify the causes. Among all components of the safe trolley busbar, the carbon brush is the part that normally wears out. For environments with severe corrosive gases, it is also necessary to check the corrosion of the brackets, suspension clamps, and tractors; take timely measures and apply anti-rust materials. In places where the trolley busbar is used, if construction is underway, do not impact or press the transmission conduit, and do not place heavy objects on it. Prevent deformation and cracking of the transmission conduit, which would affect use and cause safety accidents. After construction is completed, immediately remove construction debris from the transmission conduit. During normal maintenance, personnel are not allowed to step on the transmission conduit or its brackets to prevent damaging the flatness of the entire line and causing accidents.
When considering the power supply points of the safe trolley busbar, the total number and total capacity of electrical equipment on the same span, the duty cycle, and the voltage drop value along the full length, as well as the environment, should be considered (the voltage drop calculation can be based on the data in the previous guide rail parameter table). Power supply generally has the following options 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 Three-point power supply at 1/10 from both ends and the middle, etc.
Installation instructions Before installing the trolley busbar, first fix the angle steel brackets according to the installation form selected by the user and the suspension spacing of the trolley busbar. At the installation site, slide the required suspension seats onto each 6-meter section of trolley busbar, and one joint protective cover at each end. Also install one aluminum joint at one end. When installing the aluminum joint, note that only half of the aluminum guide rail should be inserted into the joint, leaving the other half for connection to the next guide rail. After the above preparations are complete, hang the trolley busbar sections one by one on the brackets and connect them along the entire line. When connecting, tighten the screws of each joint. If the total length of the trolley busbar exceeds 200 meters, expansion devices should be installed (our factory supplies expansion devices at any time). When connecting the power supply cable, it can be connected at the joints of each 6-meter section. The specific connection method can refer to the previous joint device diagram. When installing curved trolley busbars, the suspension distance should be shortened accordingly. The specific dimensions can be determined based on site conditions. When installing the current collector, first install it on the matching square tube, and fix it to the electrical equipment at a suitable position that matches the trolley busbar. Note that to ensure good tracking performance and good contact capability between the current collector and the trolley busbar, they should be installed in the same vertical and horizontal direction. Maintenance
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
