A variable-diameter tree planting digging machine drill bit

Abstract

The invention discloses a planting digging machine drill with a variable diameter. The planting digging machine drill is composed of a power transmitting and tunneling device, an expanded support device, and a spiral soil guide device. Compared with the prior art, the planting digging machine drill has the following advantages that (1) the design of the planting digging machine drill with the variable diameter disclosed by the invention achieves digging of a taper tree well, so that the energy source is saved, and the usable range of the traditional fixed-diameter drill is expanded; (2) the expanded support device composed of a linear stepper motor, a screw, a sliding shaft sleeve, a stay bar and the like is adopted to achieve real-time and flexible reducing operation of the digging machine drill; and the expanded support device is accurate and reliable in reducing manner, and large in change range of a field angle; (3) the tree well dug by the planting digging machine drill with the variable diameter disclosed by the invention is not easy to collapse due to the external disturbance, and the pit retentivity is good; and (4) the taper planting tree well dug by the planting digging machine drill is more beneficial to transplanting operation and planting survival of 'basking mother earth tree' with an inverted cone compared with the cylindrical tree well from the angles of the tree transplanting operation convenience and the planting survival.

Description

technical field [0001] The invention relates to a tree planting pit digging machine drill bit, in particular to a variable diameter tree planting pit digging machine drill bit, which belongs to the field of garden planting machinery. Background technique [0002] The pit digger is a pit digging and drilling machine widely used in gardening, planting, piling and other fields. Its general working method is: the power output interface drives the transmission shaft to rotate, the gearbox turns to drive the drill bit to rotate, and the helical blade of the drill bit drives the sand Flip out upwards to complete the digging operation process. [0003] The drilling tool is the key and basic working part of the excavator. Common small or medium and large digging machines use fixed-diameter drills with helical blades, which have the advantages of simple structure, low cost, easy operation, and long life. [0004] However, the fixed-diameter drill bit also has the following disadvant...

AI Technical Summary

Problems solved by technology

[0004] However, the fixed-diameter drill bit also has the following disadvantages: (1) When it is used for transplanting medium and large trees, since the root system of this kind of transplanted wood has an inverted cone-shaped "grandmother soil", in order to facilitate planting, it must be maximized. The drill bit is selected to make the diameter of the tree pit dug meet the maximum diameter of its "grandmother's soil", which increases the amount of earthwork virtually and wastes resources; (2) The tree pit dug by a fixed-diameter drill bit is generally U-shaped, Vertical inner facades are more likely to collapse due to external disturbances, which will inevitably reduce the size of the tree pit dug and affect the quality of the pit; (3) The diameter of the tree pit often determines the degree of loose soil above the roots of the trees planted after backfilling. The amount of air flow, for the U-shaped tree pit dug out by a fixed-diameter drill bit, the diameter of the loose soil above the root system of the planted tree is fixed. In order to make it easier for the tree to survive, only a larger diameter size can be used. Increased volume of earthwork

[0005] The problems of the above-mentioned fixed-diameter drill bit limit the scope of use of this type of garden machine to a certain extent, so it is urgent to design a variable-diameter tree planting digging machine drill bit that can change the diameter of the digging hole flexibly in real time.

Images