Darui Electric recommends
The current collector is the main device for picking up electrical energy on the collecting side in a sliding contact line system. It directly conducts electrical energy to the electrical equipment through the 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 mechanical tension device and a carbon brush that directly slides in contact with the guide rail.
Power supply methods
When considering the power supply points for safe sliding contact lines, the total number and total capacity of electrical equipment on the same span, the duty cycle, and the voltage drop along the full length (voltage drop can be calculated based on the data in the previous guide rail parameter table) should be taken into account. Generally, the following power supply methods are available for user reference: ①Single-end power supply; ②Middle power supply; ③Both-end power supply; ④Power supply at 1/6 from both ends; ⑤Three-point power supply at 1/10 from both ends and the middle, etc.
Installation instructions Before installing the sliding contact line, first fix the angle steel brackets according to the installation form selected by the user and the suspension spacing of the sliding contact line. At the installation site, slide the required suspension seats onto each 6-meter section of the sliding contact line, along with one joint protective cover at each end, and also install one aluminum connector at one end. When installing the aluminum connector, note that only half of the aluminum guide rail should be inserted into the connector, leaving the other half for connection to the next guide rail. After the above preparations are complete, suspend the sliding contact lines one by one on the brackets and connect them along the entire line, tightening the screws of each joint during connection. If the total length of the sliding contact line exceeds 200 meters, expansion devices should be installed (our factory supplies expansion devices at any time). When connecting the incoming power lines, connections can be made at the joints of each 6-meter section; refer to the previous joint device diagram for the specific connection method. When installing curved sliding contact lines, 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 fix it at an appropriate position on the electrical equipment that matches the sliding contact line. Note that to ensure good tracking performance and good contact capability between the current collector and the sliding contact line, they should be installed in the same vertical and horizontal direction. Maintenance
Safe sliding contact lines should be inspected regularly during normal operation, because electrical equipment is the main production tool for every industrial and mining enterprise, and any slight error can directly affect the production efficiency of the factory. When inspecting the sliding contact line, 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 springs are fatigued, and the wear condition of the carbon brushes (these conditions can affect the conductive performance of the sliding contact line and the tracking performance of the current collector; adjustments should be made promptly). During holiday equipment overhaul periods, remove the current collector from the guide rail and check the wear of the carbon brush rollers. If the brush protrusion is less than the specified effective length, replace it promptly. If the guide rollers are severely deformed, they also need to be replaced to maintain normal operation of the current collector and good contact of the carbon brushes, and to identify the causes. Among all components of the safe sliding contact line, the carbon brush is the part that normally wears out. For environments with severely corrosive gases, also check the corrosion of brackets, suspension clamps, and tractors; take timely measures and apply anti-rust materials. In the place where the sliding contact line is used, if construction is carried out, do not impact or crush the conductive guide rail, and never place heavy objects on it. Prevent deformation or cracking of the conductive guide rail, which could affect use and cause safety accidents. After construction is completed, immediately remove construction debris from the conductive guide rail. During normal maintenance, personnel are not allowed to step on the conductive guide rail 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.
