There are several types of trenchers, each with the following characteristics:

Chain clamp type horizontal axis circular groove opener

Its working component is the blade teeth (sharp edges on the chain), which wear out quickly when cutting materials in soil. Suitable for excavating and collecting granular material foundation trenches in various irrigation channels, yards, roads, and other engineering projects. Its structure is relatively simple and easy to manufacture, but its lifespan is short and its productivity is low. This type is less commonly used in China.

Vertical gear scraper type trenching machine with wheel tooth profile

It mainly consists of a shovel assembly, a bracket assembly, a walking device, and a power drive mechanism. The characteristic of this type of trenching machine is high operational efficiency, and it has been widely used in the laying of agricultural pipelines in water conservancy projects. In addition, there is a trench opener composed of pneumatic excavators. The working part of this type of trencher consists of a series of arranged straight plates or elbows with small teeth, which can excavate complex shapes and be easy to load, but its structure is complex and bulky. There is also a deep loosening plow trencher made of wear-resistant metal, used for loosening soil and trenching. This type of trencher is not widely used in the domestic market.

In the deep cultivation process of agricultural mechanization, a rotary trenching machine can be used for operation. It includes various specifications of plow blades or multiple belt assemblies (such as No. 1, No. 2, and No. 3 wire ropes for pulling pears) used in conjunction with trenching machines and tillage machines. Its main function is to form a certain vertical depth to push the surface soil to the ridge side, and then expose the newly plowed land as the base fertilizer to achieve the effect of pre sowing compaction. By using a suspended large tractor for traction, different hitches can be adjusted to change the purpose. For example, when combined with a wide towing hook, it can be used for loosening and leveling ridges on flat ground; Paired with a narrow drag rod, it serves as the effect of ridging, fertilizing, and leveling before sowing. This form of structure is relatively complex and expensive, but it has shown good development prospects and application value in practical work.

There are generally three types of trenchers used in paddy fields: one is a V-shaped notched roller bearing embedded in the middle box, which directly bears the impact of the mud block and rolls forward; The second method is to fix the separated U-shaped bolts on both sides of the brackets to fully distribute the weight of the transmission part of the paddy field tiller on the rubber bowls at both ends of the brackets. It belongs to the light load rice precision seedling cultivation and trenching transplanting machine, which is suitable for dry land areas. During the growth period of crops, it is suitable for building neat and uniform ridges without opening the seedbed, making crops susceptible to wind speed and good drainage effects; The third method is to make the new trenching device into a keel plate design, which not only solves the problem of uneven force on agricultural land, but also maintains the flexibility of the machine itself, facilitates maintenance and reduces costs.