The working principle of the guide wheel assembly is as follows. Use a grease gun to inject grease into the grease tank through the grease nozzle, so that the piston extends out to push the tension spring, and the guide wheel moves to the left to tension the track. The top tension spring has a proper stroke. When the tensioning force is too large, the spring is compressed to play a buffering role; after the excessive tensioning force disappears, the compressed spring pushes the guide wheel to the original position, which can ensure sliding along the track frame to change the wheel spacing and ensure the removal of the track. It can reduce the impact of the walking process and avoid the derailment of the rail chain.
1. The tie bars and runners are separated to avoid the runners acting as tie bars, which makes the tie bars not very effective, and eliminates the insufficiency of the expansion of the inner frame size of the casting due to deformation.
2. The original position of the lacing bar is overlapped with the riser, and the deformation prevention effect of the lacing bar is greatly increased by avoiding the riser of the lacing bar.
3. Change the two-open box into three-open box, and change the runner to step-type and enter along the two-part surface. The original runner was poured through the tie bar. Due to the thin wall, there was insufficient pouring on the bottom surface of the box. The molten steel fills the cavity evenly, steadily and sequentially through the newly opened runner, and flows into the mold through the upper and lower step runners. In addition, the riser is separated, so the heat of the casting is not concentrated, and the molten steel flows into the riser through the upper gate. , the casting first followed the principle of simultaneous solidification, and then followed the principle of sequential solidification, which not only greatly reduced the tendency of the casting to deform and crack, but also obtained a denser casting.
Post time: Mar-08-2022
