A New Type of Spindle Rammer

Abstract

The invention discloses a novel fusiform rammer. The novel fusiform rammer comprises a rammer body. One end of the rammer body is fixedly connected with a transition part. The other end of the rammer body is fixedly connected with an extrusion part. The side face of the rammer body is provided with an outwards-protruded gear-shaped protrusion. After combined, the transition part, the rammer body and the extrusion part are fusiform. One end of the transition part is connected with the rammer body seamlessly. An installation part connected with a rammer joint fixedly in a matched mode is arranged at the other end of the transition part. One end of the extrusion part is connected with the rammer body seamlessly. A rammer head is fixedly connected with the other end of the extrusion part. The structure and composition of the rammer are optimized, so that when the rammer is lifted and put down, friction force of the side face of the rammer and a soil body is reduced, and thus scratches are not liable to be formed on the side face of the rammer. Through the fusiform shape of the rammer, extrusion force of the rammer and a hard object can be reduced, so that a concave-convex interface is not liable to be formed on the surface of the rammer, and thus the soil extrusion compact effect is good. In addition, through an additionally arranged cast infiltrated layer, the abrasion resistance and corrosion resistance of the rammer can be improved substantially, and thus the service cycle of the rammer is prolonged.

Description

technical field [0001] The invention relates to the field of dynamic tamping machine equipment, in particular to a novel spindle-shaped rammer. Background technique [0002] In the current hole-forming technology, most of the holes are formed by borrowing soil or drilling soil, which has a great destructive effect on the original soil and is not conducive to further exerting the bearing capacity of the soil. The existing immersed tube squeezes the soil to form holes. However, the scope of application is small and more limited. [0003] The use of special-shaped rammers to squeeze soil into holes is a new construction method developed by technicians today. By using special-shaped rammers, the soil can be forced to squeeze the soil during the hole-forming process, so that the soil around the holes can be obtained. It has a good compaction and reinforcement effect and improves the bearing capacity of the soil. However, in the rammers of the existing dynamic tamping machines, ...

AI Technical Summary

Problems solved by technology

However, in the rammers of the existing dynamic tamping machines, most of them are cylindrical flat-bottomed rammers, and there are few reports about special-shaped rammers. In the process of squeezing the soil, there is often a certain degree of "suction hammer" phenomenon. At the same time, when the rammer hits with a hard object, the hard object directly acts on the rammer, which may cause the rammer The surface of the hammer forms an uneven section, which in turn destroys the strength of the rammer, causing cracks or even cracks to appear on the surface of the rammer. When the hammer is lifted and lowered, the friction between the side of the rammer and the soil will aggravate the surface of the rammer and form a ravine. , Scratches, cracks and scratches cause corrosive substances in the soil to hide in it and strongly corrode the interface. The consequence is that the surface of the rammer is more severely corroded, which in turn causes the rammer to fail prematurely. This is undoubtedly Increased equipment input costs

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