JPH0125541Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an excavator for digging up agricultural products such as underground tubers such as potatoes.

[Technical background of the invention and its problems]

Conventionally, with this type of excavator, when the harvested material is discharged onto the expanded and softened ground surface, the harvested material may fall into depressions on the ground surface or be scattered, making it difficult to collect the harvested material. It is time consuming and
In some cases, there are problems such as items being left unpicked.

Therefore, in the past, in order to make it easier to pick up the harvest after digging, a leveling plate was installed at the rear of the excavator, a driving rolling wheel, etc. There is a structure in which the soil surface, which has become swollen and softened, is leveled and the harvested crops are discharged onto the leveled surface.

However, with this type of structure, there are problems such as the overall size of the machine body due to the leveling plate and the drive roller, and the structure also becomes complicated.

[Purpose of invention]

The present invention was developed in view of the above points, and it is possible to level the ground with an endless rotating body that conveys the harvested material, and to release the harvested material onto the leveled ground surface. The purpose is to

[Summary of the idea]

The present invention includes an excavation body that digs up harvested products, and an endless rotating body that is connected to the rear end of the excavation body so as to be freely rotatable and transports the harvested products rearward from the excavation body. The endless rotating body is rotatably suspended between a driving wheel and a driven wheel, which are arranged to be rotatable in the front and back, and is suspended between the driving wheel and the driven wheel on the conveying side. The feature is that a leveling part for leveling the ground surface excavated on the return side is formed protruding toward the ground surface side.

[Example of idea]

Hereinafter, an embodiment of the present invention will be described as shown in the accompanying drawings.

In the figure, 1 is a main frame as a main body frame, side frames 2 as main body frames are attached to opposite ends of this main frame 1, and a front frame 3 is attached to the front part of the opposing side frames 2. A supporting frame 4 is provided vertically and protrudes forward from the opposing front frame 3.

Further, a transmission 6 having an input shaft 5 is attached to the middle part of the main frame 1, and a tip 7 as a digging body is attached integrally between the lower ends of the front frame 3 and tilting backward upward. Further, a coulter 8 is rotatably mounted on the front end of the support frame 4 via a height-adjustable support rod 9 provided opposite to it.

Next, a driven wheel 11 is attached to the front lower part of the opposing side frame 2, that is, to the rear end of the tip 7 via a guide 10, and is rotatable to both ends of the spindle 11 via a spindle 12. A first drive wheel 13 as a drive wheel is attached to the rear upper part of the driven wheel 11 and is rotatable between the opposing side frames 2.
A first drive wheel 13 as a drive wheel is fixed to both ends of the drive shaft 14 via the first drive wheel 14, and is located at the rear of the first drive wheel 13 and between the rear ends of the opposing side frames 2. The second drive wheel 15 having the same shape as the drive shaft 16
The drive shaft 16 is fixed to both ends of the drive shaft 16 through a shaft, and the drive shaft 16 is rotatably moved forward and backward into a slightly arcuate long guide groove 17 formed in the rear end of the opposing side frame 2 and long in the front-rear direction. It is suspended. Additionally, adjustment rods 18 are provided at both ends of the drive shaft 16 of the second drive wheel 15.
The lower end of the adjustment support rod 18 is rotatably mounted on the side frame 2 via the support shaft 20, and
A connecting rod 21 is connected between the adjusting rods 18 on both sides. Further, a nut 22 is fixed in the middle of one of the adjusting rods 18, and an adjusting screw 24 having a handle 23 is screwed into this nut 22 so as to be freely adjustable forward and backward. is rotatably supported via a bearing 25. In addition, the driven wheel 11 and the first driving wheel 13
A guide roller 26 is rotatably mounted on the side frame 2 via a support shaft 27 in a fixed position.

An endless rotating body 28 is rotatably suspended between the driven wheel 11, the first and second driving wheels 13, 15, and the guide roller 26, and this endless rotating body 28 The return side 30 of the descending section relative to side 29 is suspended slackly downwardly. This endless rotating body 28 is provided with endless bands 33a on both sides thereof, which have engagement teeth 32 on the inner surface that mesh with the engagement teeth 31 of the driven wheel 11 and the first and second drive wheels 13, 15. Moreover, it is constructed by supporting a large number of horizontal rods 33b arranged in parallel at a predetermined spacing between the endless bands 33a on both sides.
A guide roller 34 that guides the conveying side 29 downward between the first and second drive wheels 13 and 15 is attached to the side frame 2 via a vertically adjustable support rod 35. The guide roller 34 forms a stepped portion 36 in the middle of the conveying side 29, and the first driving wheel 13 is connected to the front and back of the first drive wheel 13 via this stepped portion 36 during rotation. First inclined conveyance surface 37 and second inclined conveyance surface 38
is beginning to form. Further, between the drive shaft 14 of the first drive wheel 13 and the drive shaft 16 of the second drive wheel 15, the first and second drive wheels 13 and 15 are moved at the same speed and at the same circumferential speed. A driving interlocking medium 39 is rotatably suspended, and this interlocking medium 3
9 is variably supported by a movable tension roller 40, and the tension is automatically adjusted in response to the back and forth movement of the second drive wheel 15. Further, the drive shaft 14 of the first drive wheel 13
is operatively connected to the output shaft 41 of the mission 6 via an output transmission medium 42.

Next, a rotational center shaft 43 is rotatably mounted horizontally on the intermediate lower end portions of the opposing side frames 2, and a middle portion of a rotation frame 44 is integrally fixed to both ends of this rotational center shaft 43. A first movable guide roller 46 as a guide roller that engages with the inner side of the return side 30 of the endless rotating body 28 is supported at the lower end of the support frame 45 protruding from the tips of the rotating frames 44 on both sides. It is rotatably mounted via a shaft 47. Further, a second movable guide roller 48 serving as a guide roller that engages with the outer side of the return side 30 of the endless rotating body 28 is rotatably attached to the rear portion of the rotating frame 44 on both sides via a support shaft 49. The second movable guide roller 48 and the first movable guide roller 4 are mounted on an axis.
The first movable guide roller 46 and the guide roller 26, which are mounted on an axis and project downward from the 8, form a multi-stage ground leveling section 50 on the return side 30 of the endless rotating body 28. It is now formed to protrude. In addition, a sled-like grounding body 52 is attached to the rear end of the rotating frame 44 on both sides via a support rod 51.
are rotatably connected in the middle, and the tips of the grounding bodies 52 on both sides are rotatably attached to the lower end of the side frame 2 via a shaft 53. Further, the lower end of a screw tube 54 is rotatably attached to the tip of one of the rotating frames 44 via a horizontal shaft 66.
4, an adjusting screw 56 is screwed and inserted so that it can be adjusted forward and backward, and the upper part of this adjusting screw 56 is inserted into and supported by a rotatable bearing body 57 attached to the side frame 2, and the upper part of this bearing body 57 A handle 58 of the adjusting screw 56 projects out.

Furthermore, the rear end portions of rotating rods 59 are attached to the lower rear ends of the side frames 2 on both sides so as to be movable up and down with a support shaft 60, and the tip portions of the rotating rods 59 on both sides are attached to the endless rotating body. A third movable guide roller 6 as an internally engaging guide roller on the return side 30 of 28
1 is rotatably mounted on a support shaft 62, and an interlocking rod 63 is connected between the intermediate portions of the rotation rods 59 on both sides. Further, the lower end of a screw tube 64 is rotatably attached to the middle of one of the rotary rods 59 via a horizontal shaft 65, and an adjustment screw rod 66 is screwed into the screw tube 64 so as to be freely retractable. The upper part of the adjusting screw 66 is inserted into and supported by a rotatable bearing body 67 attached to the side frame 2, and a handle 68 of the adjusting screw 66 projects from the upper part of this bearing body 67.

In the figure, 69 is a tension roller for the output transmission medium 42, 70 is a cover body for the input shaft 5, and 71 is a connecting frame having a connecting portion 72 connected to the three-point suspension mechanism of the tractor.

Next, the operation of the above structure will be explained.

Each connecting portion 72 of the connecting frame 71 is connected to the three-point suspension mechanism of the tractor, and the input shaft 5 of the transmission 6 is connected to the output shaft portion of the tractor.

Further, when the adjusting screw 56 is rotated by the handle 58, the screw tube 54 screwed into the adjusting screw 56 is moved forward and backward relative to the adjusting screw 56, and the mutually connected rotating frames 44 on both sides are rotated around the central axis of rotation. The first and second movable guide rollers 46 and 48, which are moved up and down around the rotation frame 43 and are pivoted in front and behind the rotating frame 44 on both sides, are moved up and down. A stepped portion that is high on the front side and low on the rear side is formed in the intermediate portion on the return side 30 of the endless rotating body 28 whose inner and outer surfaces are engaged with the upper and lower surfaces of the wheels 46 and 48.

When the adjusting screw 66 is rotated by the handle 68, the screw tube 54 screwed into the adjusting screw 66 is moved forward and backward relative to the adjusting screw 66, and the mutually connected rotating frames 59 on both sides rotate the support shaft 60. The third movable guide roller 61 at the tip of the rotating frame 59 is moved up and down at the center, and the endless rotating body engages the lower surface of the third movable guide roller 61 with its inner surface. A stepped portion is formed at the rear portion of the return side 30 of 28, which is higher on the front side and lower on the rear side.

This means that the driven wheel 1 at the front end
On the return side 30 of the endless rotating body 28 between the drive wheel 1 and the second drive wheel 15 at the rear end, first to third movable guide rollers 46, 48, 61, a multi-stage ground leveling section 50 having a desired degree of inclination that is high on the front side and low on the rear side is formed.

In addition to this, in addition to setting the positions of the first and second movable guide rollers 46 and 48, the grounding bodies 4 on both sides connected to the rotation frames 44 on both sides
2 is simultaneously moved up and down about the shaft 42, and the set heights of the grounding bodies 52 on both sides are also set at the same time.
When the grounding bodies 52 on both sides are rotated downward about their shafts 53 and lowered to predetermined positions as shown by the chain lines in FIG. 4, the first movable guide roller 46 ascends and the second Since the movable guide roller 48 is lowered, in this case it is preferable that the third movable guide roller 61 is also lowered.

In the above case, when the adjustment screw 24 is rotated by the handle 23, the adjustment support 18 is moved back and forth around the support shaft 20 via the nut 22 screwed together, and both sides connected to the adjustment support 18 are moved back and forth. the second of
The drive wheel 15 is connected to the guide groove 17 via the drive shaft 16.
The ground leveling section 50 can be moved back and forth along the inner surface, and can correspond to the setting of a plurality of levels of ground leveling sections 50 on the return side 30 of the endless rotating body 28.

Next, the excavator is towed by a tractor, and the excavator is, for example, placed in a groove on the outside of the two ridges, and the excavator is moved forward while straddling the two ridges. Gold 7 is placed on the second ridge.
In addition, the output shaft 41 of the mission 6
The first drive wheel 13 connected via the output transmission medium 42 is interlockedly driven, and the second drive wheel 15 connected via the interlocking medium 39 is interlockedly driven.
As a result, the endless rotating body 28 is rotated counterclockwise in FIG. When this excavator is towed and driven, the outer grooves of the two ridges are cut by the coulter 8 on both sides, and the two ridges cultivated in the two ridges are cut by the tip 7 placed between the coulter 8 on both sides. The harvest of furrows, namely potatoes, is dug up. Moreover, as the digging machine advances, the endless rotating body 2 of the rotating conveyor A connected to the rear end of the tip 7
8, on the conveying side 29 of the ascending section, that is, on its first inclined conveying surface 37. Also, the first
The potatoes conveyed onto the second inclined conveying surface 37 are conveyed backwards while shaking off the soil, and are further transferred onto the second inclined conveying surface 38 through the step 36 in the middle, where the potatoes are further sieved off the soil. while being conveyed backwards, and then carried out backwards from the rear end of this second inclined conveyance surface. At this time, before the potatoes are carried out backward from the conveyance section of the endless rotating body 28 of the conveyor A, the expanded soft soil in the two ridges that has been expanded and softened by the tip metal 7 in order to dig up the potatoes is removed. As the soil advances, the soil is successively leveled and approximately leveled by the multi-stage leveling section 50 on the return side 30 of the endless rotating body 28 while pushing the soil back forward. Therefore, the potatoes carried out from the endless rotating body 28 are carried out and dropped onto the substantially flat ground surface leveled by the ground leveling section 50. This makes post-work such as picking up potatoes easier.

Next, in the embodiment described above, the case where the first movable guide roller 46 is attached to the tip of the rotating frame 44 that interlocks the grounding body 52 has been described, but the present invention is not limited to this. As shown, the first movable guide roller 46 may be axially mounted on the side frames 2 on both sides without interlocking with the grounding body 52 so as to be height adjustable. In this case, the supporting frames 73 are fixed and vertically installed on the side frames 2 on both sides, and a plurality of mounting holes 74 are vertically bored in the lower part of the supporting frames 73 on both sides, and one of the mounting holes 74 is selected. First, the first movable guide roller 46 is rotatably supported via a support shaft 75.

Further, in the embodiment described above, the case where the third movable guide roller 61 is rotatably mounted on the tip of the rotating frame 59 that moves up and down around the support shaft 60 has been described, but the third movable guide roller 61 is not limited to this. As shown in FIG. 3, the third movable guide roller 61 may be mounted on a shaft on the side frames 2 on both sides so as to be height adjustable. In this case, a support frame 76 is fixed and vertically installed at the rear lower part of the side frame 2 on both sides, and a plurality of mounting holes 77 are vertically bored in the lower part of the support frame 76 on both sides.
A third movable guide roller 61 is rotatably mounted on a selected one of the rollers via a support shaft 78.

Further, in the embodiment described above, the case where the second drive wheel 15 is provided so as to be freely adjustable in its longitudinal position via the long guide groove 17 has been described, but the present invention is not limited to this.
The driving wheels 15 may be provided in a fixed position as shown in FIG.

In the embodiment shown in FIGS. 3 and 4 above, the multi-stage ground leveling section 50 formed on the return side 30 of the endless rotating body 28 is The first movable guide roller 46 and the second movable guide roller 4 are arranged around the guide roller 26.
8 or the second movable guide roller 4
8 and the third movable guide roller 61 may be formed so as to protrude downward. Further, in the case of the embodiment shown in FIG. 4, the multi-stage ground leveling section 50 on the return side 30 is formed by combining the first to third movable guide rollers 46, 48, 61 and protruding downward. It is better to make it . In this case,
As in the case of the embodiment described above, it is preferable that the second drive wheel 15 is adjusted back and forth to adjust and set the degree of slack on the return side 30 of the endless rotating body 28 and the tension thereof.

[Effect of idea]

According to the present invention, a leveling portion protruding toward the ground surface is formed on the return side of the endless rotating body suspended between the driving wheel and the driven wheel so as to be freely rotating, so that the harvested material can be harvested. Along with the digging work, the swollen and softened ground surface caused by digging up the harvested material can be reliably leveled by the leveling section and almost leveled. The harvested products discharged rearward from the conveying end of the endless rotating body are dropped onto a leveled ground surface that does not have large irregularities on the surface, so that post-work can be carried out easily. In addition, it does not need to be bulky, unlike those in which a ground leveling plate or drive rolling wheel is separately installed, and the structure is simple.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a side view of an excavator, Fig. 2 is a perspective view of the drive mechanism of the endless rotating body and the structure of the ground leveling section, and Fig. 3 is a side view of the excavator. Fourth
The figure is a side view of a part of an excavator showing another embodiment. 7... Excavator, 11... Driven wheel, 13, 15...
. . . Drive wheel, 28 .

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An excavation body that excavates harvested products, and an endless device that is connected to the rear end of this excavation body so as to be rotatable and conveys the harvested products from the excavation body rearward. It is equipped with a rotating body, and
The endless rotating body is rotatably suspended between a driving wheel and a driven wheel which are arranged to be freely rotatable in the front and back, and is arranged on the return side with respect to the conveyance side between the driving wheel and the driven wheel. An excavator characterized by having a leveling part protruding toward the ground surface for leveling the excavated ground surface. (2) The leveling part formed on the return side of the endless rotating body is
The excavator according to claim 1, which is a registered utility model, and is protruded toward the ground surface by a guide roller rotatably provided on the return side. (3) The leveling part formed on the return side of the endless rotating body is
Projected and supported on the ground surface side by a plurality of guide rollers rotatably provided at the front and rear of the return side,
The excavator according to claim 1, wherein the at least one guide roller is provided so as to be variable in position so that the degree of protrusion thereof can be adjusted. (4) Utility model registration claims Paragraphs 1 to 3, characterized in that the guide roller that forms the ground leveling portion on the return side of the endless rotating body is attached to the grounding body or the main body frame. An excavator described in any of the above.