Shandong China Coal Import & Export Co., Ltd.

In order to regulate the unmanned aircraft engaged in operational flight activities and promote the safe, orderly and healthy development of the unmanned aircraft industry, the Civil Aviation Administ

Return time is also an important technical index of dowty retarder, which directly affects the effect of dowty retarder on vehicle work.

When the locomotive or vehicle reversely passes through the dowty retarder, the sliding cylinder will be locked in the low position after being pressed down by the wheel flange, and will not brake the

Recently, with the formal approval of the State Intellectual Property Office, Shandong Tiandun Security & Rescue Equipment Manufacturing Co., Ltd., a subsidiary of China Coal Group

The damage of many parts in the dowty retarder is closely related to the internal pressure when the dowty retarder works, especially the damage of the sealing cover. Through fault tree analysis, we ha

The performance of dowty retarder is mainly determined by its internal pressure valve.