JPH0313163Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a root cutter used for cutting the roots of seedlings when replanting them.

BACKGROUND OF THE INVENTION Conventionally, when replanting a seedling, the roots of the seedling are cut within a certain range in order to make it easier to take out the seedling from the nursery. A vibrating root cutter has conventionally been used as a device for cutting the roots of seedlings. In conventional root cutting machines, the body of the mobile agricultural machine is provided with a crank that rotates by driving force from an engine and an operating rod that is connected to the crank and swings back and forth. As shown in the figure, a root cutting blade 3 consisting of a vertical blade 1 and a horizontal blade 2 connected to the lower end of the vertical blade 1 is connected. Then, the root cutting blade 3 advances through the soil while swinging integrally with the operating rod, and the vertical blade 1
The horizontal blade 2 cuts roots that grow horizontally, and the horizontal blade 2 cuts roots that grow downward. In addition, the root cutting blade 3 has an inverted T-shape, and the horizontal blade 2 is connected to the vertical blade 1.
This is done symmetrically with respect to the vertical blade 1.

Problems to be solved by the invention The work efficiency of root cutting work is determined by the length dimension of the horizontal blade 2. That is, if the horizontal blade 2, which normally cuts the roots of two seedlings, is lengthened to cut the roots of four seedlings, the work efficiency will be doubled. but,
If the length of the horizontal blade 2 is increased, the resistance of the horizontal blade 2 when moving through the soil will also increase, and a large traction force will be required. Further, as the length of the horizontal blade 2 increases, the weight of the entire vibrating part increases, so the vibration of the mobile agricultural machine also increases, which in turn increases the vibration of the handle, causing discomfort to the operator.

Measures to solve the problem Two cranks, which rotate horizontally around axes in the left and right directions by the driving force from the engine and are shifted in phase by 180 degrees, are installed in the body of the mobile agricultural machine, and the approximately central part is connected to the support part. The upper ends of the supported pair of operating rods are connected to the crank. A substantially L-shaped root cutting blade consisting of a vertical blade and a horizontal blade connected to the lower end of the vertical blade is connected to the lower part of the operating rod.

Function As the crank rotates, the operating rod and root cutting blade move through the soil while swinging back and forth around the axis of the support, cutting the roots of the seedling. The forward swing of the operating rod and root cutting blade due to the rotation of the crank is performed alternately between the pair of operating rods and root cutting blade, so the resistance when the operating rod and root cutting blade move through the soil is halved. be done.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 3. First, at the rear of the body 4 of the mobile agricultural machine, there are a pair of cranks 6 and 7 that rotate about horizontal axes in the left and right directions by the driving force from the engine 5.
are provided with a phase of 180. moreover,
The body 4 has a support portion 8 at approximately the center in the vertical direction.
A pair of left and right operating rods 9 and 10 are provided behind the cranks 6 and 7, and are supported so as to be swingable in the front and rear directions. Note that the operating rods 9, 1
0 is connected to the cranks 6 and 7 via connection rods 11 and 12.

Next, substantially L-shaped root cutting blades 15 and 16 are provided, each consisting of a vertical blade 13 and a horizontal blade 14 connected to the lower end of this vertical blade 13. It is connected to the lower end portions of the operating rods 9 and 10. The connection of the horizontal blade 14 to the vertical blade 13 in each of the root cutting blades 15 and 16 is performed in an outward direction away from each other.

In such a configuration, the pair of vertical blades 13 are positioned in the center of adjacent seedlings, and the machine body 4 is advanced with the entire horizontal blade 14 and approximately half of the lower side of the vertical blade 13 buried in the soil. . As the cranks 6, 7 rotate due to the driving force from the engine 5, the operating rods 9, 10 swing back and forth around the fulcrum 8, and the root cutting blades 15, 16 also move forward and backward together with the operating rods 9, 10. oscillate. This swinging action allows the root cutting blades 15 and 16 to move smoothly into the soil, allowing the horizontal blade 14 to cut the roots extending downward and the vertical blade 13 to cut the roots extending laterally. The cutting is done.

Here, one operating rod 9 and root cutting blade 15 swing in the front-back direction, and the other operating rod 10 and root cutting blade 16
When the cranks 6 and 7 swing forward and backward, the phases of the cranks 6 and 7 are shifted by 180 degrees, so that when one swings forward, the other swings backward. Therefore, the resistance when the horizontal blade 14 moves through the soil during work is halved compared to when using a conventional inverted T-shaped root cutting blade, and the traction force required for work is also significantly reduced. . Moreover, the weight of each root cutting blade 15, 16 is also reduced, and the vibration of the mobile agricultural machine due to the rocking of the root cutting blades 15, 16 is also reduced. As a result, root cutting work can be performed using a small mobile agricultural machine with low traction force, and if the work is performed with the same traction force as when using a conventional inverted T-shaped root cutting blade, each root cutting It is also possible to double the length of the blades 15 and 16 to double the work efficiency.

Effects of the invention Since this invention is configured as described above, the length of each root cutting blade can be reduced compared to the conventional inverted T-shaped root cutting blade without shortening the length of the root cutting blade as a whole. Therefore, the resistance of the horizontal blade moving through the soil can be halved without reducing work efficiency. In addition, since the weight of each root cutting blade is reduced, vibrations caused by swinging of the root cutting blades are reduced, which reduces vibrations transmitted to the operator and allows for comfortable work. It has the effect of being able to.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of this invention, Fig. 2 is a rear view thereof, Fig. 3 is a front view showing the state of root cutting work, and Fig. 4 shows the state of root cutting work in a conventional example. FIG. 4... Aircraft, 5... Engine, 6, 7... Crank, 8... Support part, 9, 10... Operating rod, 1
3... Vertical blade, 14... Horizontal blade, 15, 16...
Root cutting blade.

Claims (1)

[Scope of utility model registration request] The body of the mobile agricultural machine is equipped with two cranks that rotate about horizontal axes in the left and right directions by the driving force from the engine and are 180 degrees out of phase. A pair of operating rods are provided that are connected to the crank and can freely swing back and forth around the axis of the support portion, and the operating rods include a vertical blade at the bottom and a horizontal blade connected to the lower end of the vertical blade. A root cutting machine characterized by connecting approximately L-shaped root cutting blades.