JP2000312503A - Machine for cutting root of strawberry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machine for cutting roots of strawberry, capable of surely cutting the roots of the strawberry at given positions while keeping the depth of a root-cutting blade constant even if the heights of ridges are not even, and capable of enhancing a tractive force of a tractor. SOLUTION: This machine 1 for cutting roots of strawberry by taking out the power of a tractor 2 by changing the power into front and rear vibration, transmitting the vibration to a pair of root-cutting blades 6 formed in the right and left, and vibrating the root-cutting blades 6 to cut the roots of the strawberry, has a pair of freely rotatable rear wheels 9 rolling on the top surface of a ridge 15, attached to the root-cutting machine 1, and the rotary drive of an axle of the tractor 2 is transmitted to the rear wheels 9 to drive the rear wheels 9. The rear wheels 9 are attached to the front part of the root- cutting blades 6.

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 the remaining stem 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 reliably. 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, a conventional root cutter 1 is connected to a towing vehicle 2 such as a tractor, and root cutting blades 6 that vibrate in the front-rear direction are provided on the right and left rear portions of the fuselage. While moving forward along the ridge 15 at 20, the roots stretched on the left and right ridges 15 are cut by the root cutting blade 6. 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, and if it is shallow, the root cutting blade 6 passes over the root of the root and is important. Because 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 if the stem is pulled out. Therefore, conventionally, the rear wheel 1 provided in the center of
The depth of the root cutting blade 6 is set by adjusting the depth of the root cutting blade 6 by the vertical position adjusting means 19. Since the rear wheel 17 rolls on the groove bottom 18 between the ridges, if the distance (ridge height) from the groove bottom 18 to the top surface of the ridge is constant, the root cutting blade 6 cuts the root at a fixed position. it can.

[0003]

However, in practice, the grooves have irregularities and the height of the ridges is not constant.
Even if you adjust the position of the rear wheel, where the ridge is high, the root cutting edge is too deep, so it will pass below the root and leave most of the root, and conversely, if the ridge is low, ,
Because the position of the root cutting blade is too shallow and cuts off the upper part of the crown,
There were inconveniences such as failure to remove the crown. Further, since the root cutting blade advances while oscillating back and forth under the ground, the traction resistance due to the vibration is extremely large.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to maintain a constant root cutting edge depth even when the height of the ridges is not uniform. It is an object of the present invention to provide a strawberry root cutter that can surely cut the root of a strawberry at a fixed position and can increase the traction of a towing vehicle.

[0005]

In order to achieve the above object, the present invention changes the power of the towing vehicle into forward and backward vibrations, extracts the vibrations, and transmits the vibrations to a pair of root cutting blades provided on the left and right sides. In a strawberry root cutting machine that vibrates the root cutting blade to cut a strawberry root, the root cutting machine has a pair of left and right rotatable rear wheels that roll on a top surface of a ridge and the towing vehicle. And transmitting the rotational drive of the axle to the rear wheel to drive the rear wheel. Further, the rear wheel is attached to the front of the root cutting blade. The drive of the drive wheels of the towing vehicle is transmitted to the rear wheels to drive the rear wheels, thereby enhancing the traction force of the towing vehicle. During root cutting, the traction resistance is large when the root cutting blade goes underground and oscillates back and forth, but the driving force of the rear wheels contributes to increasing the traction of the towing vehicle. Then, the root cutting blade tends to enter the ground, which tends to further press the rear wheel against the ridge surface to increase the contact pressure of the rear wheel, thereby exerting the driving force of the rear wheel.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a strawberry root cutter according to the present invention, and FIG. 2 is a rear view thereof. Strawberry root cutter 1
Connect 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 roots rotatably mounted on the root cutting blade mounting shaft 4. Cutting blade supporting rods 5,5, root cutting blades 6,6 attached to the root cutting blade supporting rods 5,5, a rear wheel mounting shaft 7 laid laterally on the connecting portion 3, and both ends of the rear wheel mounting shaft 7 It consists of a rear wheel 9 mounted via vertical position adjusting means 8.

A power transmission rod 10 for connecting the root cutting blade support rods 5 is fixed to the root cutting blade support rods 5, and a vibration shaft 1 is provided on the power transmission rod 10 by changing the power of the tractor 2 into forward and backward vibrations.
Fix 1

The vertical position adjusting means 8 comprises a positioning pipe 12 fixed to the rear wheel mounting shaft 7 and a rear wheel mounting rod 13 having a rear wheel 9 mounted at a lower end thereof inserted therein. Is adjusted appropriately, and fixed by screws 14 attached to the positioning tube 12, and the distance (height) from the rear wheel mounting shaft 7 to the rear wheel 9 is arbitrarily determined.

The left and right rear wheels 9, 9 are connected by a single axle 21, and a pulley 23 integrally attached to the axle 21 and an axle 22 of a drive wheel 20 of the tractor 2 are provided.
A belt 25 is stretched between pulleys 24 attached integrally to the rear wheel 9 to transmit the rotational drive of the drive wheel 20 to the rear wheel 9.
Is configured to be driven. Then, the tension of the belt 25 stretched is adjusted by the tension roller 26.

In the strawberry root cutting machine 1 constructed as described above, the rear wheel 9 is first positioned by the vertical position adjusting means 8, the multi-film (not shown) is turned up, and the root cutting blade 6 is placed in the ridge 15.
And drives the tractor 2 at this position. 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 rear wheel 9 and the root cutting blade 6 does not change, the root cutting blade 6 moves a certain depth from the top surface of the ridge 15 and
6 roots are cut one after another.

At this time, since the driving of the tractor drive wheel 20 is transmitted to the rear wheel 9 and the rear wheel 9 is driven, the traction force of the tractor can be increased, and the root cutting blade 6 is sunk into the ground and vibrates back and forth. This contributes to increasing the traction force against the traction resistance while traveling. Since the root cutting blade 6 tends to enter the ground, this tends to press the rear wheel 9 further on the ridge surface, increase the contact pressure of the rear wheel 9, and exert the driving force of the rear wheel 9. Contribute.

When the rear 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 rear wheel 9 immediately before cutting, so that the root can be reliably cut. In addition, root cutting blade 6
After passing, the ridge collapses and the ridge surface becomes uneven, but the rear wheel 9 moves in front of the root cutting edge 6 where the ridge surface has not yet been roughened, so that the vehicle can run stably.

[0013]

As described in detail above, according to the present invention, since a pair of left and right rotatable rear wheels that roll on the top surface of the ridge are attached to the root cutter, the height of the ridge is reduced. Even if it gets higher or lower on the way, the depth of the root cutting blade is kept constant and the root of the strawberry can be cut at a fixed position, so that the remaining stem can be reliably removed. Moreover, since the drive of the drive wheels of the tractor is transmitted to the rear wheels to drive the rear wheels, the traction force of the tractor can be increased, and the ground pressure of the rear wheels increases due to the tendency of the root cutting edge to enter the ground. The driving force of the rear wheels is fully exhibited. Further, since the left and right rear wheels are provided as a pair, the vehicle can be stably driven without inadvertently leaning left and right.

Also, the rear wheel is attached to the front of the root cutting blade, and the strawberry stem is pressed by the weight of the fuselage, so that the root can be cut reliably.
In addition, since the rear wheels move on the undulating ridges before root cutting, the traveling of the aircraft is further stabilized.

[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]

 REFERENCE SIGNS LIST 1 strawberry root cutter 2 tractor 3 connecting part 6 root cutting blade 8 vertical position adjusting means 9 rear wheel 15 ridge 16 strawberry remaining trunk 20 drive wheel 21 rear wheel axle 23,24 pulley 25 belt 26 tension roller

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 the cutter, a pair of left and right rotatable rear wheels that roll on the top surface of the ridge are attached to the root cutter, and the rotational drive of the axle of the towing vehicle is transmitted to the rear wheels so that the rear wheels are rotated. A strawberry root cutter that is driven. 2. The strawberry root cutter according to claim 1, wherein the rear wheel is mounted in front of the root cutter.