CN108575386A - A kind of tea tree deep pruning machine - Google Patents

Abstract

The invention relates to a tea tree mowing machine, which belongs to the technical field of agricultural and forestry machinery. The machine includes a frame supported on a crawler-type chassis, and the frame extends backwards with handrails, and the front end of the frame is hinged with the knife rest through upper and lower swing bars to form a parallelogram mechanism; the knife rest is equipped with a power source The driven pendant left and right rotary cutter groups each have a group of disc cutters whose diameters gradually shrink from top to bottom, and the edges of adjacent cutters of the left and right rotary cutter groups overlap. Because the drooping left and right rotary cutter groups of the present invention can successively cut the tea tree into multiple sections, and can cut the tea tree almost close to the ground in theory, it not only avoids the accumulation and blockage of branches, but also can effectively meet the agronomic requirements of mowing. The tracked chassis moves smoothly without damaging the tea tree, thus overcoming various drawbacks in the prior art.

Description

A tea tree mowing machine

technical field

The invention relates to a machine suitable for section-returning and covering operations, in particular to a tea tree platform mowing machine, which belongs to the technical field of agricultural and forestry machinery.

Background technique

Tai mowing is one of the ways to completely transform the tree canopy. Practice has shown that the heavy pruning of aging tea trees with a pruning height of 30-40cm from the ground can no longer restore the tree vigor. Even if the fertilizer management is enhanced, the yield is still not high, because the inside of the tea tree is full of thick and old branches, with a high rate of dead branches, which act as a skeleton. There are many lichens and mosses on the stems, few buds and leaves, and the branches are grayish brown. It is not enough to change the tree vigor of the tea tree without mowing. The newly drawn shoots germinate from the rhizomes after platform mowing. Their physiological age is young, and the drawn out branches have strong vitality, which can form a neat crown and a strong tree vigor. Under the condition of strengthening fertilizer management, the tea tree can quickly recover. Production, to achieve the purpose of increasing production and improving quality.

For a long time, traditional methods such as machetes and large scissors have been used for manual chopping, chopping, and shearing. The work is intensive and inefficient. It usually requires 2-3 people to assist in the operation, and the cost is extremely high. In recent years, although the platform mowers that have emerged are generally backpack-type garden single-disc saws, the operating efficiency has been greatly improved compared with the traditional purely manual cutting method, but two people are still required to assist in moving the cut tea trees away from the tea garden. Continuous operation, and the incision is prone to tearing, unevenness and other symptoms, and it is easy to be infected with viruses and cause the death of tea trees.

According to the search, the Chinese patent application with the application number 201610323190.X discloses a kind of walk-behind side trimmer, which can be completed by adjusting the angle (0-90°) between two reciprocating cutting knives and the ground. For tea tree side and tea canopy trimming, due to the limitation of reciprocating cutter and its mechanical structure, this machine is only suitable for light, heavy and deep tea tree trimming operations, and cannot complete table mowing operations. The application number is 201711036364.5. Although the disc-type tea tree pruning machine disclosed in the Chinese patent application has been improved, it adopts a disc-type cutter arranged symmetrically on both sides. According to reports, it can realize table mowing operations; however, there are the following problems in practical application: 1) Due to the wheeled chassis and no branch guide plate, the implements can only walk in the middle of the tea row during operation, and it is very easy to hit the tea trees during the process, which will not only damage the tea trees, but also easily insert tea branches into the implements to hinder walking; 2) The use of a single-row cutter can only solve the cutting of a single cutting surface, and the cut parts will be randomly piled up on the upper, lower, left, and right positions of the machine tool. If it is stuck, the operation cannot be continued, and if it is equipped with manual assistance to remove the cut branches, the operation efficiency will inevitably be seriously reduced; 3) In particular, the adjustment range of the cutter of this machine cannot reach the 5-10cm from the ground required by the platform mowing agronomy, so It is only suitable for deep and heavy pruning, and it cannot actually meet the requirements of platform mowing.

Contents of the invention

The object of the present invention is: aiming at the problems existing in the above-mentioned prior art, propose a tea tree platform mowing machine that can successfully complete the operations of tea tree cutting, segmenting, and returning to the field at one time, and can effectively meet the agronomic requirements of the platform mowing.

In order to achieve the above object, the basic technical solution of the tea tree mowing machine of the present invention is as follows: it includes a frame supported on the crawler chassis, the frame extends backwards from the handrail, and the front end of the frame passes through the upper and lower swing rods and the knife. The frame is hinged to form a parallelogram mechanism; the knife frame is equipped with drooping left and right rotary cutter groups driven by a power source, and each rotary cutter group has a group of disc cutters whose diameter gradually shrinks from top to bottom. , The edges of the adjacent cutters of the right-handed cutter group overlap.

The further improvement of the present invention is that, the two sides of the left and right rotary cutter groups are equipped with branch gathering devices with involute front ends.

A further improvement of the present invention is that the tool rest is composed of two side frames, a rear frame and a top frame, and a transmission box with a horizontal axis driven wheel is installed on the rear side of the rear frame, and the top frame is equipped with a power source through transmission Box-driven pendant left and right rotary cutters.

A further improvement of the present invention is that a gearbox driven by a power source is placed in the middle of the frame, and the gearbox is connected to the horizontal axis driven wheel through the horizontal axis driving wheel above it, and the horizontal axis driving wheel is connected to the horizontal axis. The line connecting the centers of the axle driven wheels is parallel and equal to the line connecting the two hinge points of the fork.

A further improvement of the present invention is that at least the middle part of one of the upper and lower swing rods is supported on the adjustable lifting device.

When working, adjust the swing angle of the pendulum to adjust the working height as needed. The power source provides power to drive the disc cutters of the left and right rotary cutter groups to rotate at high speed. When the crawler chassis is in progress, the tea tree is rotated at high speed first up and then down. The length of the cutting knife is determined by the installation interval of the upper and lower disc cutters. By adjusting the installation interval of the disc cutters, the tea tree branches can be cut into different lengths, and the cut branches are directly returned to the field. Because the drooping left and right rotary cutter groups of the present invention can successively cut the tea tree into multiple sections, and can cut the tea tree almost close to the ground in theory, it not only avoids the accumulation and blockage of branches, but also can effectively meet the agronomic requirements of mowing. The tracked chassis moves smoothly without damaging the tea tree, thus overcoming various drawbacks in the prior art.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of an embodiment of the present invention (engine and branch gathering device are not installed).

FIG. 2 is a schematic top view of the structure of FIG. 1 .

Detailed ways

Embodiment one

The tea tree mowing machine of the present embodiment is shown in Figure 1 and Figure 2. The frame 5 is supported on the crawler chassis 3, the gearbox 4 driven by the engine is placed in the middle and the armrest 6 is extended backward, and the engine is fixed in the rear ( Purchase the installation base 2 (not shown in the figure). The front end of the frame 5 is hinged with the rear side of the knife rest 1 of the frame structure through the upper and lower swing rods 8 to form a parallelogram mechanism. Specifically, tool rest 1 is made of two side frames 1-1, rear frame 1-2 and top frame 1-3, rear frame 1-2 rear side is installed with the transmission box of horizontal axis driven wheel 7, top frame 1- 3. The pendant left and right rotary cutter groups 9 driven by the power source through the power output wheel of the transmission box 7 are installed. Each rotary cutter group 9 has a group of five disc cutters whose diameter gradually shrinks from top to bottom. The diameters from top to bottom are Φ40cm, Φ35cm, Φ30cm, Φ25cm, Φ20cm, and the edges of the adjacent cutters of the left and right rotary cutter groups overlap. The both sides frame 1-1 of knife rest 1 is equipped with the branch gathering device 10 that is positioned at the both sides front end involute of left and right rotary cutter group. At least the middle part of one of the upper and lower swing rods 8 is supported on the adjustable lifting device 11, so the height of the knife rest 1 can be adjusted as required, and the left and right rotary cutter groups 9 are kept in a drooping shape. Gear box 4 is connected with horizontal axis driven wheel 7 belt transmissions by the horizontal axis driving wheel 12 above it, because the connecting center line of horizontal axis driving wheel 12 and horizontal axis driven wheel 7 is parallel and equal to the two hinges of upper or lower swing link 8 The dots are connected to the line, so the simple and convenient transmission mechanism can adapt to the height adjustment of the knife rest 1.

The present embodiment is mainly used for the platform mowing of tea trees with a branch diameter of 3-8cm, and the height of the platform mowing is 5-10cm from the ground. When working, adjust the working height (5cm-140cm) by adjusting the lifting device and adjusting the number of working blades. The engine provides power to drive two sets of disc cutters to rotate at a high speed of 4000-5000r/min. The tea tree is cut into multiple sections, and the length of each section is determined by the installation interval of the disc cutter, and the branches after the section are returned to the field directly. The hand-held operation of the tea tree platform mowing machine in this embodiment can be operated by one person, and the continuous operation of tea tree cutting, segmenting, and returning to the field can be completed at one time. The mowing operation of tea gardens in the plain area.

Claims (5)

1. A tea tree platform mowing machine, comprising a frame supported on the crawler chassis, the frame extends rearwardly out of the handrail, it is characterized in that: the front end of the frame is hinged with the knife rest by the upper and lower swing bars to form a parallel Quadrilateral mechanism; the knife holder is equipped with drooping left and right rotary cutter groups driven by a power source, and each rotary cutter group has a group of disc cutters whose diameter gradually shrinks from top to bottom. Adjacent cutter edges of the knife group overlap. 2. The tea tree platform mowing machine according to claim 1, characterized in that: the two sides of the left and right rotary cutter groups are equipped with branch gathering devices with involute front ends. 3. The mowing machine for tea tree platform according to claim 2, characterized in that: the knife rest is made of two side frames, a rear frame and a top frame, the rear side of the rear frame is equipped with a transmission box with a horizontal axis driven wheel, The top frame is equipped with a pendant left and right rotary cutter group driven by a power source through a transmission box. 4. The tea tree platform mowing machine according to claim 3, characterized in that: a gearbox driven by a power source is placed in the middle of the frame, and the gearbox is driven by a horizontal shaft driving wheel and a horizontal shaft driven wheel belt above it. Connected, the line connecting the horizontal axis drive wheel and the driven wheel of the horizontal axis is parallel and equal to the line connecting the two hinge points of the swing rod. 5. The mowing machine for tea tree platform according to claim 4, characterized in that: at least the middle part of one of the upper and lower swing rods is supported on the adjustable lifting device.