Cluster casting shell mould and technology for cast steel tool aprons of rotary cultivators

Abstract

The invention discloses a cluster casting shell mould and technology for cast steel tool aprons of rotary cultivators and belongs to the field of parts of agricultural machines. The cluster casting shell mould for tool aprons is a multi-layer shell mould made of precoated sand. The multi-layer shell mould comprises a bottom layer shell mould body, a middle layer shell mould body and a top layer shell mould body, wherein a plurality of tool apron lower shell moulds are arranged in the bottom layer shell mould body, a plurality of tool apron upper shell moulds are arranged in the top layer shell mould body, a plurality of tool apron lower shell moulds are arranged on the upper surface of the middle shell mould body, and a plurality of tool apron upper shell moulds are arranged on the lower surface of the middle shell mould body; shell cores are arranged in the middles of the multiple tool apron upper shell moulds and the middles of the multiple tool apron lower shell moulds; and multiple tool apron cavities are formed in the multiple tool apron lower shell moulds and the multiple tool apron upper shell moulds. By using the cluster casting shell mould to cast tool aprons, batch production of tool aprons can be realized, the use amount of the precoated sand is reduced, product quality is improved, the production cost is reduced, the production efficiency is improved, and the wish of farmers for maintaining agricultural machines with a low price is met.

Description

technical field [0001] The invention relates to a cluster casting shell mold and process, in particular to a cluster casting shell mold and process of a cast steel knife seat for a rotary tiller, and belongs to the field of agricultural machinery components. Background technique [0002] The rotary tiller is a tillage machine that is matched with a tractor to complete plowing and harrowing operations. It has been widely used because of its strong soil breaking ability and flat surface after plowing. At the same time, it can chop the root stubble buried below the surface. It is convenient for the operation of the seeder and provides a good seed bed for later sowing. my country has a vast area of ​​agricultural arable land. With the development of my country's industrialization, the agricultural population has moved to cities and towns, and the agricultural population has been put into the industrial team. A new cooperation model has begun in the countryside, and agricultural ...

AI Technical Summary

Problems solved by technology

Figure 7 is the schematic diagram of the planar structure of the tool seat, Figure 8 It is a schematic diagram of the end structure of the knife seat. In the figure, 101 is the knife seat, 102 is the hexagonal hole, 103 is the arc end face, 104 is the round hole, and the round hole 104 and the hexagonal hole 102 are used to fix the handle Yes, the knife handle is inserted in the rectangular hole in the middle of the upper and lower sides of the knife seat 101. Since the knife seat in the prior art is made of cast iron, the tiller is used for cultivation of different soils in different regions, especially for the root stubble of large autumn crops. For farming or farming in some paddy fields, the load on the knife seat is heavy, and the cast iron knife seat with the fixed handle is easily damaged. Once damaged, it needs to be replaced together with the main shaft, and because the parts are relatively small, it is not easy to cast, the casting cost is high, and the price is not high. It is cost-effective, and manufacturers are unwilling to produce such products. Once damaged, the accessories are not easy to buy, and they need to be replaced together with the spindle. As a low-income general farmer, it will increase the economic burden, often because it is difficult to buy spare parts for tool holders, and they are reluctant Investing a lot of money to replace the whole part makes farmers unable to use the tiller. In addition, a large number of knife holders are needed in the manufacturing process of the rotary tiller. It is also necessary to improve the quality of the knife holder from the source to prevent the casting from being damaged during use. , slipping and other phenomena to meet the needs of the user

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