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The cutting ring and spectacle plate are a pair of closely matched parts with relative motion. The contact surface of both parts is welded with a layer of wear-resistant material. Through the special-shaped nut at the end of the S-shaped key shaft, the concrete pump can adjust the gap between them within (0.1-0.2) mm. The rubber spring assembled between the S-shaped tube and the cutting ring enables the cutting ring and the spectacle plate to move freely relative to each other.

隨著使用時(shí)間的延長，橡膠彈簧失去彈性，切割環(huán)和眼鏡板的接合面將出現(xiàn)磨損，從而導(dǎo)致二者之間間隙增大。當(dāng)間隙>0.7mm時(shí)，需立即調(diào)整，否則混凝土泵送的砂漿會(huì)乘“隙”而入。一旦有砂漿進(jìn)入摩擦面，切割環(huán)和眼鏡板的磨損速度將大大加快。

With the extension of the use time, the rubber spring loses its elasticity, and the joint surface of the cutting ring and the spectacle plate will be worn, resulting in the increase of the gap between the two. When the gap is more than 0.7mm, it needs to be adjusted immediately, otherwise the mortar pumped by concrete will enter by "gap". Once the mortar enters the friction surface, the wear rate of the cutting ring and the spectacle plate will be greatly accelerated.

泵送混凝土?xí)r，切割環(huán)隨著S形管的擺動(dòng)而擺動(dòng)，起著切割混凝土的作用，因此切割環(huán)磨損的速度比較快，出口處混凝土的壓力越高，切割環(huán)的磨損程度就越嚴(yán)重。通常情況下，切割環(huán)的磨損發(fā)生在邊緣，且處于上部成90°角的兩個(gè)對(duì)稱部位。因此，當(dāng)切割環(huán)的上述部位磨損時(shí)，可及時(shí)將切割環(huán)旋轉(zhuǎn)一個(gè)角度后繼續(xù)使用，這就相當(dāng)于將切割環(huán)的使用壽命延長一倍。

When pumping concrete, the cutting ring swings with the swing of S-shaped pipe, which plays the role of cutting concrete. Therefore, the speed of cutting ring wear is relatively fast. The higher the pressure of concrete at the outlet, the more serious the wear degree of cutting ring. Generally, the wear of cutting ring first occurs at the edge, and it is in two symmetrical parts with 90 ° angle at the upper part. Therefore, when the above parts of the cutting ring are worn, the cutting ring can be rotated for an angle in time and then used again, which is equivalent to extending the service life of the cutting ring by one time.

眼鏡板的磨損發(fā)生于其中部鼻梁處，混凝土輸送泵眼鏡板和切割環(huán)之間的間隙越大，其磨損速度越快。因此必須時(shí)刻注意眼鏡板和切割環(huán)之間的間隙，一旦發(fā)現(xiàn)間隙增大，需立即擰緊異型螺母或更換磨損件，防止砂漿進(jìn)入摩擦面。當(dāng)橡膠彈簧失去彈性時(shí)，需立即更換。對(duì)于可以修復(fù)的切割環(huán)和眼鏡板，可用D507焊條補(bǔ)焊后繼續(xù)使用。

The wear of the spectacle plate first occurs in the middle of the nose beam. The larger the gap between the spectacle plate and the cutting ring of the concrete delivery pump, the faster the wear rate. Therefore, it is necessary to pay attention to the gap between the spectacle plate and the cutting ring at all times. Once the gap is increased, it is necessary to tighten the special nut or replace the wearing part to prevent the mortar from entering the friction surface. When the rubber spring loses its elasticity, it needs to be replaced immediately. For the cutting ring and spectacle plate that can be repaired, d507 electrode can be used after repair welding.