Shandong China Coal Import & Export Co., Ltd.

Daily maintenance: Check whether the wheel of the minecart rotates flexibly, and whether the sound is normal when the wheel rotates. Whether the yaw of the wheel and the wear of the rim are beyond the

Mine wagon is a main transportation equipment for coal and gangue transportation on the ground and underground roadways of coal mines.

Every morning at 7 o'clock in the morning, in the Yulin Railway Station Hump Marshalling Yard, you will see a tall figure, stepping on the track with your feet one by one on the dowty retarder like a

Peng Hui, the maintenance worker of the dowty retarder, has changed into dark blue cotton work clothes and thick-soled shoes, pushing a tool cart, carrying a tool bag and a water bottle, and starting

"Re-testing the installation height of the dowty retarder is 56 mm, which is in compliance with the regulations."

It turns out that this is the dowty retarder, which is installed on the steel rail and contacts the wheels by sliding the cylinder cap head to brake and decelerate the freight vehicle.