Spade of tree-transplanting machine with desorption and resistance-reduction functions

Abstract

Provided is a spade of a tree-transplanting machine with desorption and resistance-reduction functions. The spade comprises spade bodies. The front end of each spade body is a soil piercing end having two convex-type side edge parts and the back end of each spade body is a top wing end having two concave-type spade shoulders. A soil-touching curved surface is formed in such a manner that an element line parallelly stretches along a neat line. The element line is formed by connection of a first circular arc segment, a second circular arc segment and a third circular arc segment in sequence. The diameter ratio of the first circular arc segment, the second circular arc segment and the third circular arc segment is 1:1.033:1. The ratio of central angles of the first circular arc segment, the second circular arc segment and the third circular arc segment is 1:0.897:1. The neat line is in accord with a parameter equation x=0.0000196817t<3>-0.0066395974t<2>+1.5884557962t and y=-0.0000268889t<3>+0.0090709577t<2>-0.7555908377t, wherein the value range of t ranges from 0 to 150. The spade of the tree-transplanting machine with desorption and resistance-reduction functions has following beneficial effects: during operation, soil pressure can be dispersed, a soil-touching area is decreased and a soil stress structure is changed so that soil adhesion and soil resistance are reduced.

Description

technical field [0001] The invention relates to the technical field of garden machinery, in particular to a tree transplanter shovel with the function of desorption and drag reduction. Background technique [0002] With the rapid development of my country's modern urban construction and the continuous improvement of urban green ecological environment construction requirements, tree transplanters have been used more and more in my country's landscaping projects. The tree transplanting machine used in production practice is mainly composed of a frame, a shovel, a guide rail, a hydraulic cylinder and a lifting mechanism, wherein the shovel is the main working part of the tree transplanting machine for transplanting. The number of shovel blades used in the production is generally 3 to 4, and the number of shovel blades is determined by factors such as the shape of the working shovel, structural parameters, overall design, application conditions, and working environment. The few...

AI Technical Summary

Problems solved by technology

Practice has shown that compared with the spoon-shaped spade transplanter, the diamond-shaped spade transplanter generally has the disadvantages of low work efficiency, low energy utilization rate, and incomplete tree root digging; for the spoon-shaped spade, the transplanter's The overall size is relatively small, and the volume of the soil ball contained in the shovel group is larger than that of the diamond-shaped shovel, and more tree roots are preserved, which is beneficial to the growth of the tree after transplanting. This type of shovel mechanism is mostly used for large trees or small row spacing. Transplanting of seedlings

However, practice shows that spoon-shaped shovel transplanters generally have the weaknesses of serious soil adhesion and variable blades.

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