Influence of manufacturing and assembly accuracy of Spreader Parts

1、零部件制造與裝配精度較低，會影響碎石撒布精度。由于碎石撒布車的料斗、布料滾筒、布料板等多用薄鋼板經(jīng)切割、折彎等工序后再焊接而制成的，焊接變形較大，制造與裝配精度較低。當布料滾筒的圓度或圓柱度誤差過大時，會導致拋撒碎石料的撒布量不均勻；當焊接料門限位塊的位置誤差過大時，會造成每個料門開度不一致，致使碎石撒布量不均勻；當布料滾筒的軸線與下料口下沿安裝不平行，也會使得沿軸線方向的碎石料堆積量不等，當布料滾筒轉動時帶下的碎石流量也會有差異，致使碎石撒布量不均勻，而影響碎石撒布精度。

1. The manufacturing and assembly accuracy of parts is low, which will affect the gravel distribution accuracy. Because the hopper, distribution drum and distribution plate of the gravel spreader are mostly made of thin steel plate after cutting, bending and other processes, the welding deformation is large and the manufacturing and assembly accuracy is low. When the roundness or cylindricity error of the distribution drum is too large, it will lead to uneven distribution of crushed stones; When the position error of welding material threshold block is too large, the opening of each material door will be inconsistent, resulting in uneven distribution of gravel; When the axis of the distribution drum is not parallel to the lower edge of the blanking opening, the gravel accumulation along the axis will be different. When the distribution drum rotates, the gravel flow under the belt will also be different, resulting in uneven gravel distribution and affecting the gravel distribution accuracy.

撒布車

Spreader

2、碎石流過的撒布車表面的光滑性，也會影響碎石撒布精度。當料斗底板表面不光滑，會使碎石流動的隨機性增大、撒布量會產生波動性的變化，也可能造成碎石撒布不均勻。

2. The smoothness of the surface of the spreader through which the gravel flows will also affect the gravel distribution accuracy. When the surface of the hopper bottom plate is not smooth, the randomness of gravel flow will increase, the distribution amount will fluctuate, and the uneven distribution of gravel may also be caused.

3、導料槽表面要求應無隆起的焊縫、無凸臺、無凹槽等，并且所有拼接處及折彎處應做光滑處理。否則，易阻滯碎石的流動，碎石流動不暢，就會影響撒布精度。

3. The surface of the guide chute shall be free of raised welds, bosses, grooves, etc., and all splices and bends shall be smooth. Otherwise, it is easy to block the flow of gravel, and the poor flow of gravel will affect the distribution accuracy.

碎石料的物性、粒徑，及在路面上的彈跳狀況的影響

The influence of physical properties, particle size and bouncing condition of crushed stone on the pavement

碎石料的物性差異大、粒徑不均勻時，使得每個料門下落的碎石量不同；同時，碎石落地后會彈起，形成碎石飛濺，導致碎石撒布均勻性變差；等等，都會影響撒布精度，但其影響遠沒有前面諸因素的影響顯著。

When the physical properties of crushed stone vary greatly and the particle size is uneven, the amount of crushed stone falling from each material gate is different; At the same time, the gravel will bounce up after falling to the ground, forming gravel splash, resulting in poor gravel distribution uniformity; And so on, will affect the distribution accuracy, but its influence is far less significant than that of the previous factors.

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