JPH05123021A - Digger - Google Patents

Abstract

PURPOSE:To obtain a digger, equipped with a self-propelled machine having a mobile unit and a pair of tilling parts, driven and arranged at an interval left and right on their front side and a digging part for bringing down untilled parts and capable of reducing the extent of resistance of soil in digging and facilitating the taking out of crops. CONSTITUTION:In a digger for crops such as a Welsh onion or a carrot planted on a ridge or flatland, a self-propelled machine body 1, having mobile units 7 and a pair of driven tilling parts 9 oppositely arranged at a prescribed interval left and right on the side of the forward direction of the machine body 1 and a digging out part 13, located in the rear of the pair of the tilling parts 9, arranged in the intermediate part 11 formed between the pair of the tilling parts 9 and capable of bringing down untilled parts including crops are installed. Both sides of a ridge are initially cut so as to provide the remaining central part of a ridge where crops are planted with the tilling parts 9 on both sides and the untilled parts including the crops are brought down with the digging part 13 to completely take out the crops without pulling out the crops. Thereby, the extent of resistance of soil applied to the digging part 13 is reduced in digging to facilitate the taking out of the crops.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digging machine for crops or the like buried in the ground, and particularly, to reduce the resistance of soil at the time of digging so that crops can be taken out easily. Regarding

[0002]

2. Description of the Related Art Conventionally, an excavator for crops such as green onions and carrots planted in ridges and flat land has the following structure, for example. First, the machine body 101 that can be traveled by the traveling wheels 103.
On the front side in the traveling direction of the machine body 101, there are provided a pair of rotatably driven tilling blades 105 projecting on both sides. Behind the cultivating blade 105 of the machine body 101, a pair of digging blades 107 are arranged as digging portions so as to project horizontally on both sides. The digging blade 107 is configured to swing or rotate back and forth.

In order to perform a digging work using such a digger, first, the digger is run between the ridges, and about half of the ridges (shown by A in the figure) by the plowing blade 105 on one side. Plowing part). Next, the excavating blade 107 protruding toward the ridge advances in the ground while being swung or rotated in the front-rear direction, and the soil under the crop is cut off to excavate the crop together with the soil.

[0004]

The above-mentioned conventional structure has the following problems. That is, when cutting the soil of about half of the ridge with the plowing blade 105 on one side and digging with the digging blade 107 as in the conventional case, the portion on the opposite side of the ridge remains as it is and the digging at the time of digging is performed. The resistance of the soil on the cutting blade 107 was increased. Further, since the crop cut off by the digging blade 107 remains in the state of being planted in the remaining soil, it is necessary for the worker to pull it out and take it out without leaving the soil. For this reason, there has been a problem that the labor of the worker becomes large.

The present invention has been made on the basis of such a point, and an object of the present invention is to reduce the resistance of the soil applied to the excavation portion during excavation and to facilitate the extraction of crops. To provide a machine.

[0006]

In order to achieve the above object, a digging machine according to the present invention is provided with a traveling body and a self-propelled machine body facing each other at a predetermined distance on the left and right sides in the forward direction of the machine body. A pair of tillage parts that are driven and driven, and a digging portion that is located behind the pair of tillage parts and that is disposed in an intermediate portion formed between the pair of tillage parts and that defeats an uncultivated part including crops,
It is characterized by having.

[0007]

According to the digging machine of the present invention, first, a pair of tillage parts which are opposed to each other and are driven at a predetermined interval are used on the left and right sides, and the middle part is aligned with the part where the ridge crop is planted. Plow the ridges. This leaves the central part of the ridge where the crop is planted and cuts both sides of the ridge. As a structure of this tilling part, a structure using a rotary blade, a trencher or the like is conceivable.

Next, the uncultivated part including the crop is brought down by the excavating part arranged in the middle part formed between the pair of tillage parts and behind the above-mentioned tillage parts to take out the crop. As the configuration of this excavation part, the horizontally arranged excavation blade is rocked or rotated back and forth to cut out the lower part of the uncultivated part, or the configuration in which the uncultivated part is pushed down, etc. Can be considered. As a result, the resistance of the soil applied to the excavated portion during excavation becomes extremely small, and the crop automatically collapses so that the operator can completely take it out without pulling it out.

[0009]

Embodiments of the present invention will be described below with reference to FIGS. First, the overall configuration of the digging machine will be described with reference to FIG. This machine has a prime mover 3 for the machine body 1, a handle 5 for an operator to walk while manipulating the machine body 1, and a lower part to which the power of the prime mover 3 is transmitted to be driven to rotate.
Is provided with a pair of wheels 7, 7 as a traveling body that travels in a fixed direction. Further, on the front side in the traveling direction of the machine body 1, there are formed a pair of tilling blades 9 and 9 which are opposed to each other with a predetermined space left and right and are rotationally driven. A digging blade 13 is formed behind the pair of cultivating blades 9 and located in an intermediate portion 11 formed between the pair of cultivating blades 9 so as to oscillate in the front-rear direction. Further, a pair of left and right wheels 15 for depth adjustment are provided at the frontmost portion of the machine body 1.

Next, the drive system for the plowing blade 9 and the excavating blade 13 will be described with reference to FIGS. First, the aircraft 1
A frame 17 is formed so as to project forward from both sides thereof. The base portion of the frame 17 has a bearing portion 19
Is formed, and a first intermediate shaft 21 horizontally arranged in a direction orthogonal to the traveling direction of the machine body 1 is pivotally supported on the upper part thereof, and a second intermediate shaft 21 arranged in the same direction at the lower part is supported. Two
3 is pivotally supported. The second intermediate shaft 23 is formed to extend to the outside of the left and right frames 17.

A chain 31 is suspended between a sprocket 27 attached to the output shaft 25 of the prime mover 3 and a sprocket 29 attached to the first intermediate shaft 21, and the first chain
Between the sprocket 33 attached to the intermediate shaft 21 and the sprocket 35 attached to the second intermediate shaft 23, the chain 3
Suspend 7. Further, a rotating shaft 39 arranged in the same direction as the first and second intermediate shafts 21 and 23 is pivotally supported on a frame 17 extending left and right, and a sprocket 41 attached to both ends of the second intermediate shaft 23 and the rotating shaft. The chain 45 is hung between the sprocket 43 attached to 39. As a result, the rotation of the prime mover 3 is transmitted to the rotary shaft 39. The plowing blade 9 and the digging blade 13 are connected to and driven by the rotary shaft 39.

Next, the structure of the plowing blade 9 and the excavating blade 13 and the driving mechanism thereof will be described with reference to FIGS. First, a chain case 49 is arranged in the frame 17 in the longitudinal direction, the rotating shaft 39 is arranged in the upper part, and the shaft part 47 is arranged in the lower part.
Attach. A chain (not shown) is suspended on the rotary shaft 39 and the shaft portion 47. The shaft portion 47 is arranged so as to project inward in the horizontal direction, and the cultivating blade 51 is arranged therein. The tilling blades 51 on both sides are arranged facing each other with a predetermined space therebetween, and the space between them is the intermediate portion 11. This middle part 11
The width of is properly set according to the width of the crop planted in the ridges or the like.

The digging blade 13 is arranged behind the pair of plowing blades 9. First, arms 53 bent in a substantially V shape are attached to the flares 17 on both sides so as to be swingable with an intermediate portion serving as a fulcrum 55, and formed at a lower end of the arm 53 between a pair of tilling blades 51. A digging blade 9 arranged in a substantially horizontal direction is attached to the lower part of the space 11. On the other hand, the upper end of the arm 53 is connected to one end of a crank 57 attached to the rotating shaft 39 via a crank arm 59. The rotation of the rotary shaft 39 causes the arm 53 to swing via the crank 57 and the crank arm 59, and swings the digging blade 13 attached thereto in the front-back direction.

The operation will be described with reference to FIGS. 4 to 5 based on the above configuration. First, the prime mover 3 is started, its rotation is transmitted to the wheels 7, the rotation of the prime mover 3 is transmitted to the rotary shaft 39, the plowing blades 9 on both sides are driven to rotate, and the crank 57 and the crank arm 59 are used. Arm 53
And the excavating blade 13 is swung back and forth.

In this state, the excavator is run over the ridges to continuously excavate the planted plant. First, as shown in FIG. 4, the digging blades 9 arranged on both sides of the frame 17 are used to cut the ridge crop planted portion.
It is located in the intermediate portion 11 formed between the ridges and is run on the ridge in this state, and both sides of the ridge (portion indicated by C in the figure) are cultivated and cut. Next, as shown in FIG. 5, the lower part of the uncultivated portion (the portion indicated by D in the figure) remaining in the intermediate portion 11 is cut off by the excavating blade 13 which swings back and forth. This causes the crop to fall with the soil and be completely removed.

According to this embodiment, the following effects can be obtained. First, the resistance of the soil applied to the digging blade 13 during digging can be made extremely low. This is because both sides of the ridge are cut by the plowing blade 9, leaving the middle part 11 where the ridge crop is planted. Further, the crop digging work becomes easy, and the troublesome work of pulling out the crop becomes unnecessary. This is because the crops can be easily separated and taken out from the soil by cutting both sides of the ridge with the tilling blade 9 and then defeating the uncultivated portion with the digging blade 13. Further, in the case where the digging blade 13 is rocked back and forth, the crop can be tilted rearward in the traveling direction of the machine body 1, and the work of taking out the crop can be facilitated.

The present invention is not limited to the above embodiment. For example, although the structure of the cultivating unit 9 is shown by using a rotary blade as an example, it may be a trencher type instead. This is a type of trench digger with a large number of buckets attached to a continuous chain (movable wheels are also possible). Since the length can be set arbitrarily, the plowing depth should be set deep. Can be done.

Further, the construction of the digging section 13 may be such that the digging blade 13 is swung back and forth as in the above embodiment, or the horizontally arranged digging blade may be rotated. ,or,
It is also possible to simply fix the horizontally arranged digging blade. Further, a plate that swings or rotates in the left-right direction may be arranged so as to be tilted in the horizontal direction, or a vertically long plate may be simply fixed and tilted to the front side. In short, it is only necessary that the uncultivated portion remaining in the middle part is broken down so that the crop can be taken out, and various forms other than the above-mentioned embodiment can be adopted.

The digging machine of the present invention is not only used for ridges, but also applicable to digging a crop planted on a flat surface. In this case, the ground may be cultivated by the plowing blade, and the plunging blade may be moved into the ground.

[0020]

As described above in detail, according to the digging machine of the present invention, the resistance of the soil applied to the digging portion at the time of digging can be sufficiently lowered, and the crop can be taken out very easily. It is a thing.

[Brief description of drawings]

FIG. 1 is a side view showing a digging machine showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a drive system according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a tilling part and a digging part in a view showing an embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an operating state of a tilling part in a diagram showing an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing an operating state of a digging portion, showing an embodiment of the present invention.

FIG. 6 is a view showing a conventional example and is an explanatory view showing a state of tilling and digging of a ridge.

[Explanation of symbols]

 1 Airframe 3 Motor 7 Wheel (running body) 9 Plowing blade (plowing part) 11 Middle part 13 Excavating blade (excavating part)

Claims (1)

[Claims] 1. A self-propelled machine equipped with a traveling body, a pair of tillage sections which are driven and are opposed to each other at a predetermined distance on the front side in the traveling direction of the machine body, and behind the pair of tiller sections. A digging machine, comprising: a digging section disposed in an intermediate section formed between a pair of cultivating sections, for defeating an uncultivated section containing crops.