JP2000000009A - Root-cutting position adjuster in strawberry root cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut the roots of strawberries at a constant position by keeping the root-cutting blade at a constant depth, even when the ridges are uneven at their height. SOLUTION: The power of the tractor 2 is taken out and converted to the longitudinal reciprocation vibration and this vibration is transmitted to a pair of the left and right root-cutting blades 6 and the roots of strawberries are cut by the vibration of the blades. In this case, the strawberry root cutter is equipped with a pair of tail wheels 9 rolling on the top surface of the ridges between the root-cutting blades 6 and the driving wheels 20. The tractor 2 is driven to go forward, as the root cutting blades 6 are vibrated, and the blades moves into the soil at a certain depth from the ridge top face to cut the roots at a prescribed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a strawberry root cutting machine for cutting strawberry roots in order to simplify the operation of removing residual stems of strawberry after harvesting.

[0002]

2. Description of the Related Art Unless the remaining stem of a strawberry that has been harvested is pulled out and removed, it rots and adversely affects the next plant to be planted. In particular, if the crown of the root is left as it is, it will easily become a hotbed of pathogenic bacteria, so it is necessary to remove it surely. However, because the roots of strawberries are deep underground, it takes a lot of effort to extract the whole roots. For this reason, strawberry root cutting machines have been used to cut the strawberry roots underground using power and reduce the work of extracting the remaining trunk. As shown in FIG. 3, this root cutter 1 is connected to a towing vehicle 2 such as a tractor, and has root cutting blades 6 vibrating in the front-rear direction on the right and left rear portions of the fuselage. The root stretched on the left and right ridges 15 is cut by the root cutting blade 6 while moving forward along the ridges 15. In this case, the depth of the root cutting blade 6 extending into the ground is delicate, and if it is too deep, most of the root remains and it is difficult to remove it. Since the upper part of the crown is cut off, there is a possibility that the root of the crown or the like may remain in the ground even when the stem is pulled out. Therefore, conventionally, the depth of the root cutting blade 6 has been set by adjusting the tail wheel 17 provided at the center of the rear part of the fuselage by the vertical position adjusting means 19. Since the tail wheel 17 rolls on the groove bottom 18 between the ridges, the root cutting blade 6 cuts the root at a fixed position if the distance (ridge height) from the groove 18 to the top surface of the ridge is constant. .

[0003]

However, in practice, the grooves have irregularities and the height of the ridges is not constant. Therefore, even if the position of the tail wheel is adjusted, the roots are cut off at the high ridges. Because the blade position is too deep, most of the root is left under the root.On the other hand, at low ridges, the root cutting blade is too shallow, and the top of the crown is cut off. There were inconveniences such as failure to extract the roots.

Accordingly, an object of the present invention is to cut a strawberry root at a fixed position while keeping the depth of a root cutting blade constant even when the height of a ridge is not uniform.

[0005]

That is, according to the present invention, the power of the towing vehicle is changed into forward and backward vibrations, taken out, and this vibration is transmitted to a pair of root cutting blades provided on the left and right sides to cause the root cutting blades to vibrate. In a strawberry root cutting machine for cutting strawberry roots, a pair of right and left freely rotatable tail wheels rolling on a top surface of a ridge is attached to the strawberry root cutting machine so as to be vertically adjustable. The tail wheel is provided in front of the root cutting blade.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a strawberry root cutter, and FIG. 2 is a rear view. Reference numeral 1 denotes a strawberry root cutter, which is connected to the rear of the tractor 2. The strawberry root cutting machine 1 includes a connecting portion 3 connected to a tractor 2, a root cutting blade mounting shaft 4 laterally provided on the connecting portion 3, and a pair of right and left root cuttings rotatably mounted on the root cutting blade mounting shaft 4. Blade supporting rods 5,5, root cutting blades 6,6 attached to root cutting blade supporting rods 5,5,
The tail wheel mounting shaft 7 is provided laterally on the connecting portion 3, and the tail wheel 9 is attached to both ends of the tail wheel mounting shaft 7 via vertical position adjusting means 8.

A power transmission rod 10 for connecting the root cutting blade support rods 5 and 5 is fixed to the root cutting blade support rods 5, and a vibration shaft 11 that is taken out of the power transmission rod 10 by changing the power of the tractor 2 into forward and backward vibrations.
Is fixed.

The vertical position adjusting means 8 comprises a positioning tube 12 fixed to the tail wheel mounting shaft 7 and a tail wheel mounting rod 13 having a tail wheel 9 mounted on a lower end thereof, and the position of the tail wheel mounting rod 13. Is adjusted appropriately, and then the screw 1 attached to the positioning tube 12 is adjusted.
4 and the distance (height) from the tail wheel mounting shaft 7 to the tail wheel 9 is arbitrarily determined.

In the root cutting position fixing device constructed as described above, the tail wheel 9 is first positioned by the height adjusting means 8,
The multi-film (not shown) is turned up, the root cutting blade 6 is inserted into the ridge 15, and the tractor 2 is driven in this state. The root cutting machine 1 is pulled by the tractor 2, and accordingly, the root cutting blade 6 in the ridge 15 moves forward while vibrating back and forth. At this time,
Since the relative positional relationship between the tail wheel 9 and the root cutting blade 6 does not change, the root cutting blade 6 moves a predetermined depth from the top surface of the ridge 15 and cuts the roots of the remaining stem 16 of the strawberry one after another.

When the tail wheel 9 is mounted between the driving wheel 20 of the tractor 2 and the root cutting blade 6, the strawberry is pressed by the tail wheel 9 immediately before cutting, so that the root can be reliably cut. After the root cutting blade 6 has passed, the ridge collapses and the ridge surface becomes uneven, but the tail wheel 9
Moves in a place in front of the root cutting blade 6 where the ridge surface has not yet been roughened, so that the vehicle can run stably.

[0011]

In short, according to the present invention, a pair of right and left freely movable tail wheels that roll on the top surface of the ridge are attached to the root cutter so that the vertical position can be adjusted. Even if it becomes higher or lower, the depth of the root cutting blade can be kept constant and the root of the strawberry can be cut at a fixed position, so that the remaining stem can be removed without fail. In addition, since the tail wheels are provided as a pair of left and right wheels, the aircraft can stably travel without leaning left and right. In addition, the tail wheel is attached to the front of the root cutting blade, and the strawberry stem is pressed by the weight of the fuselage, so the root can be cut reliably, and the tail wheel moves on the rough ridge before root cutting. This has the effect of further stabilizing the running of the aircraft.

[Brief description of the drawings]

FIG. 1 is a side view of a strawberry root cutter according to the present invention.

FIG. 2 is a rear view of the strawberry root cutter of the present invention.

FIG. 3 is a rear view of a conventional strawberry root cutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strawberry root cutting machine 2 Tractor 3 Connecting part 6 Root cutting blade 8 Vertical position adjusting means 9 Tail wheel 15 Row 16 Strawberry remaining trunk 20 Drive wheel

Claims (2)

[Claims] 1. A strawberry root that cuts strawberry roots by changing the power of the towing vehicle into front and rear vibrations, transmitting the vibrations to a pair of root cutting blades provided on the left and right sides, and vibrating the root cutting blades. In a cutting machine, a root cutting position adjusting device comprising a pair of left and right freely rotatable tail wheels that roll on a top surface of a ridge so that the vertical position can be adjusted. 2. The root cutting position adjusting device according to claim 1, wherein the tail wheel is mounted in front of a root cutting blade.