Excavator parts should be purchased according to conditions
The procurement of excavator parts is very important, especially the crawler. The wear resistance of the rock-type crawler is realized by the work hardening effect of the surface of the high manganese steel crawler shoe. If rock-type track shoes are used in soft rock areas, the work hardening effect cannot be produced, the hardness is not improved, and the wear is fast. At this time, it is better to use single-tooth track shoes for soft rock, or you can use track shoes that are close to the repair limit or welded track shoes. Therefore, the crawler should be selected according to the soil type and mechanical operating conditions. (1) Under ordinary soil conditions (below grade 4), single-tooth track shoes should be used. His track shoes have sharp tooth profiles, firm grip and high traction. To be used for rock work, if its strength is insufficient, it may bend or break. (2) Under rocky soil conditions, rock-type track shoes and long-life track shoes should be selected. The crawler shoes purchased from excavator parts have high strength and good abrasion resistance. During stonework, due to the effect of cold work hardening, the surface layer of the crawler shoes always maintains a high hardness of 2～3mm; in addition, the crawler bolt protection ribs, stiffeners and relatively high hardness The thick tooth section thickness makes the rock-type crawler not firmly grasp the ground, but this crawler has high torsion resistance and bending strength, good tightening of the crawler bolts and high connection strength. (3) During loading and snow digging operations, semi-double-tooth track shoes should be used when purchasing excavator parts. The height of his grouser teeth is between single-tooth and three-tooth grouser shoes. There are two grousers of unequal height, which have the characteristics of large traction and can prevent frequent turning. This kind of grouser teeth has a large thickness and is resistant to torsion under heavy loads. , High bending strength, the disadvantage is poor ride comfort on hard ground. (4) Wetland track shoes and snow track shoes should be used on wetland and snowy ground respectively. The cross section of the wetland track shoe is three arcs, with a large grounding area, large buoyancy, no tooth tip, and no object on the ground; there are special arc cross sections at both ends of the machine to prevent sideslip. What needs to be improved is low strength and easy deformation, which is not applicable except for wet ground. The snow track shoes have ribs, and the grousers have steps to prevent side slip. The trailing edge of the board surface is cut off, which makes it easy to squeeze out the ice and snow remaining on the track shoes. If it is used for ordinary soil and rock, the track is easy to wear or damage. (5) Flat track shoes and rubber track shoes can be used on paved roads and paved roads, respectively. The flat track shoe has no track teeth, and the bolt head is lower than the board surface. It does not damage the road or the ground when walking or working; the rubber track shoe fixes the rubber block on the ground surface of the track shoe. When the machine is walking, it does not damage the road surface and does not damage the road when crawling. noise. (6) To deal with high-temperature slag, the slag should be used to process the track shoes when purchasing excavator parts. It is characterized by high heat resistance, high strength and long life, and can also be used for stonework.