JP2590486Y2 - Excavator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator, and more particularly to an excavator for excavating a crop of underground tubers.

[0002]

2. Description of the Related Art Conventionally, as an excavator of this type, for example, as described in Japanese Utility Model Publication No. Hei 2-26257, an excavator for excavating crops in a machine frame and an excavator from the excavator. A conveyor for arranging the harvested material while sifting the soil is provided, and a leveling roller for leveling the loose soil excavated by the excavating body on the machine frame is provided below the unloading end of the conveyor. 2. Description of the Related Art A structure in which a shaft is rotatably mounted is known.

[0003]

In the structure described in the above-mentioned publication, the swelling soft soil is successively leveled by the leveling roller, and the harvested product discharged from the discharge end of the conveyor is dropped on the leveling ground. At this time, since the outer periphery of the leveling roller is formed as a cylindrical ground without unevenness, the soft soil will be leveled in order. In addition, the crop is dropped on the leveled ground. For this reason, when drying the crop, the contact surface between the leveling ground and the crop is large, and a sufficient drying effect cannot be obtained, and the quality of the crop is improved by strengthening the outer skin of the crop and preventing peeling. There is a problem that it is not preferable in aiming.

The present invention has been made in view of such a point, and when leveling a soft soil by a leveling roller, the ground surface portion is sequentially leveled over a plurality of strips to have a substantially uneven cross section. By dropping the harvested material on the uneven surface of the ground that has been leveled in a number of rows, the contact surface between the surface of the ground and the harvested material is small, and The hollow space between them provides a sufficient level of drying effect,
It is an object of the present invention to provide a digging machine which is preferable for enhancing the quality by strengthening the epidermis of a harvested product and preventing peeling or the like to improve the quality.

[0005]

The digging machine according to the present invention comprises a machine frame having a mission, a digging body provided on the machine frame for digging a crop, and sifting a crop from the digging body. And a leveling roller for leveling the expanded soft soil excavated by the excavator while being driven by the output from the mission, and the leveling roller is provided on both sides of the machine frame. The shaft is rotatably mounted between lower ends of a transmission case and a bracket disposed opposite to each other, and a plurality of annular leveling grooves are continuously formed on an outer peripheral portion thereof over the entire length in the axial direction.

[0006]

With the excavator of the present invention, the harvest in the field is dug up by the excavator, and the harvest is carried into the conveyor, where the soil is removed by the conveyor and the harvest is conveyed. . The expanded soft soil excavated by the excavator is sequentially leveled by a rotary leveling roller that is driven to rotate, and the harvested product discharged from the discharge end of the conveyor is dropped on the leveled ground.

In this case, since a number of annular grading grooves are continuously formed on the outer peripheral portion of the grading roller over the entire length in the axial direction, the ground surface portion is sequentially formed in each annular grading groove of the grading roller. The ground is leveled in a substantially uneven shape over a number of strips.
Therefore, the crop carried out from the carry-out end of the conveyor is dropped and supported on the uneven surface of the ground which is leveled in a number of rows, the contact surface between the surface of the ground and the crop is small, and
Multiple rows of cavities are formed between the leveling surface and the crop, and each of the cavities sufficiently dry the crop as a whole.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a machine frame. The machine frame 1 has a cylindrical main frame 2 which is long in the left-right direction. The plate-shaped side frames 3 are integrally fixed. A transmission 5 is provided at a substantially middle portion in the left-right direction of the main frame 2 so as to rotatably project the input shaft 4 toward the front.

[0010] Further, between the lower ends of the left and right plate-shaped side frames 3, a tip-like excavated body 6 for excavating harvested material is integrally protruded forward and downward. A conveyor 7 is provided between the left and right plate-shaped side frames 3 near the end so as to be able to reciprocate while tilting upward and rearward to convey the crop while sifting the soil.

The conveyor 7 includes left and right driven wheels 8 which are rotatably disposed near the rear end of the excavated body 6,
The left and right driving wheels 9 and the left and right driven wheels 8, which are rotatably disposed near the rear ends of the left and right plate-shaped side frames 3, are freely rotatably suspended between the left and right driven wheels 9. Endless revolving body 10
The endless revolving body 10 is configured to convey the crop while sifting the soil. A drive shaft 11 to which the left and right drive wheels 9 are fixed is rotatably mounted via a bearing 13 between the left and right plate-shaped side frames 3 in the vicinity of rear ends thereof. The rotation is driven by the output from the mission 5 through the transmission 12.

Further, left and right first transmission cases 14 and brackets (not shown) disposed opposite to each other at both ends of the drive shaft 11 are rotatable in the vertical direction through bearings 15, respectively. An output gear 16 is fixed to one end of the drive shaft 11 protruding into the first transmission case 14. At the lower end of the first transmission case 14, a relay shaft 17 disposed in parallel with the drive shaft 11 is rotatably mounted on a bearing 18 so that the output gear An interlocking gear 19 meshed with 16 is fixed. A second transmission case 20 is mounted on the relay shaft 17 so as to be rotatable in the vertical direction, and a sprocket 21 is provided at a projecting end of the relay shaft 17 protruding into the second transmission case 20. Is fixed.

Further, both ends of a rotating shaft 22 are rotatably mounted via bearings 23 between lower ends of the second transmission case 20 and the bracket, respectively. A sprocket 24 is fixed to a protruding end of the rotating shaft 22 protruding inward, and an endless chain 25 is suspended between the sprocket 24 and the sprocket 21 so as to freely rotate. The rotating shaft 22 has an expanded soft soil softened by the excavating body 6 and an endless revolving body 10 of the conveyor 7.
A leveling roller 26 for leveling the soil that has been sieved from the ground is integrally fixed, and the leveling roller 26 has a substantially V-shaped cross section that is not a smooth surface over the entire length in the axial direction, and has a wavy shape on its outer peripheral portion.
Numerous annular leveling grooves 27 are formed continuously.

Left and right support arms 28, which are disposed opposite to each other, are integrally protruded rearward below the second transmission case 20 and the bracket. Connected between the rear ends is a scraper 30 having a plurality of elimination projections 29 having a substantially V-shaped cross section and having a shape corresponding to each annular leveling groove 27 of the leveling roller 26. Then, the soil adhering to each of the annular grading grooves 27 of the grading roller 26 is eliminated by the respective elimination projections 29 of the scraper 30.

Further, left and right swing arms are disposed opposite to each other at a substantially middle lower portion of the left and right plate-shaped side frames 3 in the front-rear direction.
The front end of the swing arm 31 is rotatably supported in the vertical direction by a support shaft 32.
Both sides of the rotating shaft 22 are rotatably supported via 33. A vertical suspension rod 35 is pivotally supported by a support shaft 34 at a substantially middle portion in the front-rear direction of the left and right swing arms 31 so as to be rotatable in the front-rear direction. Are vertically movably inserted into guides 36 projecting from the left and right plate-shaped side frames 3, respectively, between a stopper 37 projecting from the upper end of the left and right hanging rods 35 and the guide 36, and A coil spring 39 is provided between the stopper 38 projecting below the left and right suspension rods 35 and the guide 36 via the suspension rod 35.
Are interposed respectively.

The left and right swing arms 31 swing vertically about the respective support shafts 34 via left and right suspension rods 35 by coil springs 39 at the upper and lower portions about the guide 36. The ground adjustment roller 26 is supported freely by the left and right swing arms 31 so as to be freely rotatable.

Further, the front end of the left and right plate-shaped side frames 3 is supported by a support shaft 40 at the front end of a sled-shaped grounding body 41 so as to be vertically movable. A support mechanism 43 having a handle 42 supported by the left and right plate-shaped side frames 3 is supported to be vertically adjustable in position. In the drawing, reference numeral 44 denotes a connecting frame which is integrally provided on the main frame 2 to project forward.

Next, the operation of the above embodiment will be described.

The connection frame 44 of the machine frame 1 is connected to the suspension mechanism of the tractor, and the input shaft 4 of the transmission 5 provided on the main frame 2 is connected to the PTO shaft of the tractor via a power transmission shaft. When the support mechanism 43 is operated in the up and down direction by the handle 42, the left and right grounding bodies 41 are adjusted to move up and down about the support shaft 40, and the left and right grounding bodies 41 are set to the grounding positions corresponding to the working conditions of the field. Adjusted and set.

Next, when the machine is towed by the tractor and the input shaft 4 of the transmission 5 is rotated via the power transmission shaft by the output from the PTO shaft of the tractor, the output from the transmission 5 interlocks. The drive shaft 11 of the conveyor 7 is rotationally driven via the medium 12, and the endless revolving body 10 is revolved clockwise in FIG. When the drive shaft 11 is rotationally driven, the relay shaft 17 is rotated in conjunction with the output gear 16 and the interlocking gear 19, and the output from the relay shaft 17 causes the sprocket 21 and the interlocking medium 12 to rotate.
And the rotating shaft 22 is interlocked and rotated via the sprocket 24,
In addition, the leveling roller 26 of the rotating shaft 22 is driven to rotate.

Then, the crop A in the field is dug up by the excavator 6 sequentially, and the crop A is conveyed to the conveyor 7.
The crop A is transported while the soil is sieved off by the endless revolving body 10. Also,
The expanded soft soil excavated by the excavator 6 and the soil sieved from the endless revolving body 10 are successively leveled by the rotary drive leveling roller 26, and the endless revolved body is placed on the leveled ground.
The crops A carried out from the 10 carrying-out ends are sequentially dropped.

In this case, since a large number of annular grading grooves 27 are continuously formed on the outer peripheral portion of the grading roller 26 over the entire length in the axial direction, the ridge B is formed at each annular grading groove 27 of the grading roller 26. On the ground surface portion C, support ridges D having a substantially uneven cross section are continuously formed over a large number of lines, and are leveled. Therefore, the harvested product A carried out from the carrying-out end of the endless revolving body 10 of the conveyor 7 is dropped and supported on the uneven supporting ridges D formed on the ground, and each of the supporting ridges D and The contact surface with the crop A is small, and uneven cavities E are formed in multiple rows between the support ridges D and the crop A, and the crop A is formed by the cavities E. It is sufficiently dried.

The leveling roller 26 is driven to rotate at a speed higher than the traveling speed of the excavating body 6 by the output from the mission 5, so that the expanded soft soil excavated by the excavating body 6 and the endless revolving movement. For the soil sieved from the body 10, the ground leveling roller 26 is advanced while slipping and rotating, and is formed on the ground surface portion C in the annular ground leveling groove 27 of the ground leveling roller 26 over a number of strips. The support ridges D are continuously formed in a state in which the support ridges D are not easily collapsed, and are leveled.

Further, as the leveling roller 26 is driven to rotate, the soil adhering to and clogging the respective annular leveling grooves 27 is eliminated by the respective removing convex portions 29 of the scraper 30, and the respective annular leveling grooves 27 are removed by the soil. Therefore, there is no clogging, so that a plurality of support ridges D having a substantially uneven cross section are reliably and continuously formed on the ground surface portion C at each of the annular terrain grooves 27, and the ground is leveled.

[0025]

According to the present invention, the leveling roller rotatably driven by the output from the transmission is rotatably arranged between the lower end of the transmission case and the lower end of the bracket disposed opposite to both sides of the machine frame. Since a number of annular leveling grooves were formed continuously over the entire length in the axial direction on the outer circumference of the leveling roller,
When the softening soil is leveled by the leveling roller, support ridges having a substantially uneven cross section can be continuously formed on the ground surface portion in succession over a plurality of levels, and the leveling can be performed. The contact surface between each support ridge and the crop is reduced by dropping the crop on the support ridge of the ridge, and the space between each support ridge and the crop is sufficient for the whole area. It is possible to provide a digging machine which is advantageous in that the drying effect is obtained, and the quality of the crop is improved by strengthening the epidermis of the crop and preventing peeling and the like.

[Brief description of the drawings]

FIG. 1 is a side view of an excavator showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line A-A in the above.

FIG. 3 is a sectional view taken along the line B-B of FIG. 1;

FIG. 4 is an explanatory diagram showing the above-described underground drying state.

[Description of Signs] 1 Machine frame 5 Mission 6 Excavator 7 Conveyor 10 Transmission case 26 Leveling roller 27 Ring leveling groove A Harvest

Claims (1)

(57) [Scope of request for utility model registration] 1. A machine frame having a mission, a digging body provided on the machine frame for digging a crop, and a conveyor for sifting the soil from the digging body and conveying the crop, and an output from the mission. A grading roller that rotatively drives and leveles the soft soil excavated by the digging body, wherein the grading roller has a transmission case and a bracket disposed opposite to both sides of the machine frame. A digging machine characterized by being rotatably mounted between lower ends of a plurality of ridges, and having a plurality of annular leveling grooves continuously formed on an outer peripheral portion thereof over the entire length in the axial direction.