The reason why the glasses board is called the name of the glasses board is because it looks like glasses, in fact, the glasses board is academically a wear-resistant plate with a cutting ring. In the concrete pump truck, the glasses plate and the cutting ring cooperate with each other, they mainly work with the rubber spring, through the pressure self-balance and the rubber spring automatically compensates the gap, so that the floating cutting ring has a self-sealing effect, thereby increasing the conveying pressure of the S-tube valve.

1, the glasses plate installation will eliminate the hopper installation surface clean and tidy, and clear that the relative docking sleeve has no protrusion, not a transition, easy to cause the eye plate itself deformation, may not eliminate the glasses plate itself deformation.

2, when not disassembling the S-tube, be sure to ensure that there is no concrete and sediment in the installation position of the rubber shock absorber. Otherwise, it will cause the glasses plate to be found abnormal damage, and even the glasses plate to fall into the hopper.

3. After the glasses plate cutting ring is installed, no gap should be found. Otherwise, it will cause abnormal damage to the cutting ring of the glasses plate, and even the glasses plate will fall into the hopper. It is wrong to require a gap of 0.07-0.1MM, because the rubber shock absorber supports the plate as much as possible, and the glasses plate and cutting ring are as close as possible, so that the early damage will be reduced.