When the drive sprocket rolls, the crawler will be pushed forward. When lifting and walking, the guide wheels should be in the front and the driving wheels in the back. This can shorten the length of the driving section, reduce power loss, and traverse the track life. A mechanically driven crane needs a set of messy bevel gears, clutches and drive shafts to roll the drive wheels; hydraulic transmission only requires two hydraulic motors to separate the left and right drive sprocket wheels through a planetary reducer equipped with brakes. Because the two hydraulic motors can be operated separately, the left and right crawlers of the crane can synchronously trek, evacuate, or drive by one crawler while the other crawler is stopped, and the two crawlers can be driven in opposite directions to end the rotation on the spot. There are usually two types of meshing methods for driving garage sprocket and track. Large pitch sprocket supplier Pitch pin meshing. In this way, the circumference of the track pin address is approximately equal to the pitch circle of the drive wheel. The pressure of the drive wheel gear teeth on the track pin passes through the middle of the track pin; the pitch tooth type meshing means that the gear teeth of the drive wheel and the track The pitch teeth are meshed. This meshing method is mostly used on cranes that use integral crawler plates. In the middle of equipment repair, the sprocket unloaded inspection equipment of the self-propelled plan was successfully inspected, which resolved the difficulty of the garage sprocket inspection.