JPH0414973Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an excavator, for example, an excavator for excavating underground tuber crops such as potatoes.

(Prior Art) Conventionally, as this type of excavator, for example, a vibrating frame having an excavating body is provided in the excavator main body so as to be able to vibrate freely around a vibration shaft, and the vibrating frame is attached to the excavator main body. A vibration shaft is rotatably provided separately from the vibration shaft, a conveyor body is rotatably provided on the excavator body, and a rotating upper part of the conveyor body is connected to an eccentric cam interlockingly connected to the vibration shaft via an interlocking medium. The structure is such that it vibrates up and down.

(Problems to be solved by the invention) In the above structure, the vibration of the rotating upper part of the conveyor body requires a vibration mechanism provided separately from the vibration frame, which makes the structure complicated and the drive of the conveyor body. There are problems in that an extra load is applied to the conveyor body, the conveyor body is susceptible to wear and tear, and furthermore, it is not easy to ensure the appropriate amplitude of the conveyor body.

Therefore, the present invention was made in view of these points, and the upper part of the conveyor body can be vibrated up and down by the vibration system of the vibration frame.
The structure that vibrates the upper part of the conveyor body is simplified, reducing the load when vibrating the conveyor body, and preventing wear and tear on the conveyor body.
Furthermore, it is an object of the present invention to provide an excavator that can easily ensure an appropriate amplitude.

[Structure of the invention] (Means for solving the problems) The excavator of the present invention includes an excavator main body 1, and an input shaft 5 provided on the excavator main body 1 so as to be freely rotatable with an input shaft 5 facing forward. A protruding transmission 6, a vibrating frame 10 which is pivotally supported on the front side of the excavator main body 1 via a rotation center shaft 9 so as to be vertically movable and has an excavator body 13 at its lower end, and the input shaft. an interlocking body 19 that moves the vibrating frame 10 up and down about the rotation center axis 9 by the rotation of the excavator body 1; A conveyor body 24 facing the end and rotated by the output from the transmission 6 to convey the crops while shaking off soil, and a conveyor body 24 that rotates through the rotation center shaft 35 to the excavator main body 1. The vibrating roller 33 is freely pivoted and rotatably attached to the vibrating frame 10 at one end thereof, and the vibrating roller 33 provided at the other end is brought into contact with the lower part of the rotating upper part 29 of the conveyor body 24. The link mechanism 34 vibrates the rotating upper part 29 up and down with 10 vibrations.

(Function) In the excavator of the present invention, when the excavator main body 1 is advanced and the input shaft 5 is rotated, the mission 6 is rotated.
The endless rotating body of the conveyor body 24 is rotated backward by the output from the conveyor body 24.

Further, when the input shaft 5 is rotated, the interlocking body 19 is moved up and down, and the operation of the interlocking body 19 causes the vibration frame 10 to move up and down around the rotation center axis 9. The digging body 13 is advanced while being vibrated up and down, and underground tuber crops such as potatoes are sequentially dug up by this digging body 13.

Furthermore, when the vibrating frame 10 is vibrated up and down, the link mechanism 34, whose one end is rotatably attached to the vibrating frame 10, is rotated in the vertical direction about the rotation center shaft 35, and The vibrating roller 33 at the other end of the link mechanism 34 is rotated up and down, and the vibrating roller 33 vibrates the rotating upper part 29 of the conveyor body 24 up and down. Underground tubers and other crops that are sequentially brought in from the excavation body 13 by circulating are transported backward while sieving off soil.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In the figure, 1 is an excavator main body, and this excavator main body 1 includes a main frame 2 that is long in the left-right direction, and left and right sides that are fixed to opposite ends of the main frame 2 and extend rearward. It is constituted by frames 3, 3, and left and right connecting arms 4, 4 which are opposed to the front portions of both sides of the main frame 2 and protrude toward the front.

In addition, a transmission 6 is provided in the middle of the main frame 2 and protrudes forward, with the input shaft 5 being rotatably supported by front and rear bearings 5a and 5b. The output shaft 7 and the input shaft 5 are interlocked and connected via a gear mechanism 8. Rotation center shafts 9, 9 are protruded from the front lower portions of the left and right connecting arms 4, 4, respectively, and a vibration frame 10 is movable up and down on the left and right rotation center shafts 9, 9. It is pivoted.

The vibrating frame 10 has a main frame that is long in the left-right direction, and arms 11, 11 are opposed to each other and protrude forward at both ends of the main frame.
The tips of the left and right arms 11, 11 are pivotally supported by the left and right rotation center shafts 9, 9, respectively, so as to be rotatable in the vertical direction. Further, left and right side frames 12, 12 are vertically integrally protruded downward and opposed to each other at both ends of the main frame. A tip 13 as a body is fixed in a slightly upwardly inclined state, and a sieve frame 14 is protruded rearward from the rear of the tip 13. Further, an interlocking shaft 17 is protruded rearwardly from the intermediate portion of the main frame via a bracket 16, and a linking shaft 17 is protruded downwardly from the lower end of an interlocking body 19 via a ball joint 18. An eccentric cam 21 fixed to the input shaft 5 is rotatably fitted into the interlocking body 19 via a ball bearing 22, and the interlocking shaft 5 is fitted into the interlocking body 19. 17
A locking bolt 23 is fastened to the tip of the holder. As the input shaft 5 rotates, the interlocking body 19 is moved up and down via the eccentric cam 21, and the vibrating frame 10 is also moved up and down about the rotation center shafts 9, 9.

Next, a conveyor body 24 is provided in the lower part between the left and right side frames 3, 3 so as to be freely rotatable in an upwardly inclined state. This conveyor body 24 has left and right driven wheels 25, 25 rotatably mounted on the lower front ends of the left and right side frames 3, 3, and rotatably mounted on the upper rear ends of the left and right side frames 3, 3. Opposing endless chains 27, 27 are rotatably suspended between left and right drive wheels 26, 26 mounted on shafts, and driven wheels 25, 25 and drive wheels 26, 26 on the front, rear, left and right sides.
It is constituted by an endless rotating body in which a large number of horizontal rods 28 are arranged in parallel at predetermined intervals. Further, the rear upper part of the rotating upper part 29 of the endless rotating body is supported by tension rollers 30, 30 rotatably mounted on the left and right side frames 3, 3.

Furthermore, guide long grooves 31, 31 are formed in the lower front sides of the left and right side frames 3, 3, facing each other in the vertical direction, and both ends of a vibrating rod 32 are vertically movable in these left and right guide long grooves 31, 31. The opposite endless chains 27, 2 in the rotating upper part 29 of the endless rotating body are inserted into the vibrating rod 32 near both ends thereof.
Vibrating rollers 33, 33 supporting the rollers 7 so as to be able to vibrate up and down, respectively, are rotatably mounted on an axis. Further, a drive shaft 49 on which the left and right drive wheels 26, 26 are mounted
One end of the transmission shaft 7 and the output shaft 7 of the transmission 6 are interlocked and connected via an interlocking medium 50.

Next, rotation center shafts 35, 35 are protruded from the lower front ends of the left and right side frames 3, 3, respectively, and the link mechanisms 34, 3 are connected to the left and right rotation center shafts 35, 35.
4 are respectively pivotally supported so as to be rotatable in the vertical direction.

The left and right link mechanisms 34, 34 have L-shaped links 36, 36 whose respective bent portions are rotatably mounted on the left and right rotation center shafts 35, 35, The L-shaped links 36, 36 each have one link piece 3 that protrudes toward the rear.
Both ends of the vibrating rod 32 are rotatably attached to the tips of the vibrating rods 7 and 37, and the other link pieces 38 and 38, which protrude upward, are spaced at a predetermined interval in the length direction. A plurality of selection holes 39, 39 are respectively drilled, and one end of the interlocking pieces 40, 40 is vertically rotated in a selected one of the selection holes 39, 39 via connecting pins 41, 41, respectively. The left and right interlocking pieces 40, 40 are connected freely and detachably, and the other ends of the left and right interlocking pieces 40, 40 are connected to the vibration frame 1.
Interlocking pin 4 is installed in the middle of the left and right side frames 12, 12 of 0.
2 and 42, respectively, and are connected to each other so as to be rotatable in the vertical direction.

In addition, in the figure, 43, 43 are lower pins, 44 is a connecting portion formed at the tip of the top mast 45, 4
Reference numerals 6 and 46 are ruler wheels that are vertically adjustable, and 48 and 48 are sled-like grounding bodies that are vertically adjustable.

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

Lower pins 4 on both sides of the tractor's three-point suspension mechanism
3, 43 and the upper connecting portion 44 are connected, and the input shaft 5 is connected to the power take-off shaft portion of this tractor via a power transmission shaft.

When the machine is towed by a tractor and the input shaft 5 is rotated by the output from the power output shaft of the tractor, the output shaft 7 is rotated via the gear mechanism 8. 7, the drive shaft 49 is rotated via the interlocking medium 50, and the endless rotating body of the conveyor body 24 is rotated clockwise in the direction of the arrow in FIG. 1 by the drive wheels 26, 26 on both sides.

Further, when the input shaft 5 is rotated as described above, the interlocking body 19 is moved up and down by the eccentric rotation of the eccentric cam 21, and the vibration frame 10 is moved around the left and right rotation center axes 9, 9. moved up and down,
The tip 13 between the lower ends of the left and right side frames 12, 12 of the vibrating frame 10 is advanced while being moved up and down.

Furthermore, when the vibration frame 10 is moved up and down, the left and right L-shaped links 36, 36 are rotated by the left and right interlocking pieces 40, 40 that are pivotally supported in the middle of the left and right side frames 12, 12, respectively. Dynamic center axis 35, 35
This L-shaped link 3 is rotated up and down with
Both ends of the vibrating rod 32 are moved up and down along the guide grooves 31, 31 at the tip of one of the link pieces 37, 37, and the vibrating rollers 33, 33 on both sides of the vibrating rod 32 are moved up and down. The left and right endless chains 2 in the upper part 29 of the endless rotating body of the conveyor body 24 are moved up and down and rotated in the clockwise direction by vibrating rollers 33, 33 on both sides.
7 and 27 are vibrated up and down, respectively, and the entire rotating upper part 29 of the endless rotating body is vibrated in the vertical direction.

At this time, the left and right vibrating rollers 33, 33 are rotatably mounted on the vibrating rod 32, so that no backward load is applied to the driving rotation of the endless rotating body of the conveyor body 24. Therefore, the endless chains 27, 27 and the horizontal rods 28 of the conveyor body 24 do not wear out.

Further, the tips of the left and right interlocking pieces 40, 40 are selectively communicated with one of the selection holes 39, 39 of the other link pieces 38, 38 of the L-shaped links 36, 36, and this selection position is set to the connecting pin 41. , 41, the amplitude of vibration of the left and right vibrating rollers 33, 33 can be adjusted.

For example, potatoes are sequentially dug up by the tip metal 13 that is moved while being vibrated, and these potatoes are moved to the sieve frame 14 where the soil is sieved off and further transferred to a conveyor. The soil is carried into the loading section of the rotating upper part 29 of the endless rotating body of the body 24, and while the soil is being sieved from between the horizontal rods 28 by the rotating upper part 29 of the endless rotating body being vibrated. It is conveyed and discharged from its discharge end.

[Effect of idea]

According to the present invention, one end of a link mechanism that is freely rotatable about the rotation center axis is attached to the vibration frame that is moved up and down about the rotation center axis via the interlocking body as the input shaft rotates. At the same time, the vibration roller at the other end of this link mechanism is brought into contact with the lower part of the rotating upper part of the conveyor body, and the vibration of the vibration frame causes the rotating upper part to vibrate up and down. The vibration system makes it possible to reliably vibrate the upper part of the conveyor body up and down.
Since a vibration mechanism separate from the vibration mechanism of the vibration frame is not required, the structure for vibrating the upper part of the conveyor body is simple. In addition, since the rotating upper part of the conveyor body vibrates due to the vibration rotation of the vibrating roller of the link mechanism, it is possible to reduce the load when the conveyor body is vibrated and prevent wear and tear on the conveyor body. can. Furthermore, the link mechanism makes it possible to easily ensure an appropriate amplitude for the upper part of the rotation.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the excavator, Fig. 2 is a plan view of the same, and Fig. 3 is a sectional view taken along line A--A of the same. DESCRIPTION OF SYMBOLS 1... Excavator body, 5... Input shaft, 6... Mission, 9, 35... Rotation center axis, 10... Vibration frame, 13... Excavation body, 24... Conveyor body, 29... ... Rotating upper part, 33 ... Vibrating roller, 3
4...Link mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] An excavating machine body, a transmission rotatably protruding forward with an input shaft provided on the excavating machine body, and a rotation center shaft on the front side of the excavating machine body. a vibrating frame that is pivotally supported so as to be movable up and down through the frame and has an excavation body at its lower end; an interlocking body that moves the vibrating frame up and down about the rotational center axis by rotation of the input shaft; a conveyor body which is rotatably provided on the excavator body, has a carry-in section facing the rear end of the excavator, and is rotated by the output from the transmission to convey the crops while sieving off soil; and a vibrating roller that is rotatably supported on the excavator body via a rotation center shaft, one end of which is rotatably attached to the vibrating frame, and a vibrating roller provided at the other end of the conveyor body. An excavator comprising: a link mechanism that comes into contact with a lower part of the upper part of the rotating machine and vibrates the upper part of the moving part up and down by the vibration of the vibration frame.