JPH089736A - Self-traveling type root vegetable harvester - Google Patents

Abstract

PURPOSE:To deeply insert a digging claw into soil by stably traveling a root vegetable harvester. CONSTITUTION:A pulling conveyer B constituted in doglegged state in a plan view is arranged in the forward direction from a traveling machine body and the front part of the pulling conveyer B is arranged parallel to the advancing direction and arranged in the lateral central side of a machine body and the rear part is bent outside and extended on the front end of the placing conveyer D and a digging claw 9 is fitted into a space in the front of the bending part 24 and a link mechanism for lifting and lowering a digging device A is arranged and the digging claw 9 is extended below the front of the pulling conveyer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a self-propelled root vegetable harvester for digging root vegetables such as radish and carrot from the soil, transporting them, and storing them in a storage container.

[0002]

2. Description of the Related Art As a root crop harvester for radishes and the like, a root conveyor is conventionally pulled by a tractor to dig up root roots from the soil with a hoe-shaped excavator, and a pull-out conveyor extending from the rear of the excavator. A technique for sandwiching a root portion of a root vegetable with a belt to convey the root vegetable diagonally upward and storing it in a storage container is known. Further, a technique has also been known in which the excavating claw and the pulling conveyor are configured to be rotatable up and down so that the vertical height can be adjusted.

[0003]

However, in the conventional root vegetable harvesting machine, the pulling conveyor and the excavating claw are arranged laterally with respect to the center of the machine body, and the crawler runs above the ridge at the time of harvesting so that the stability is stable. It is not preferable in terms of sex. Also,
In order to deeply insert the dug nail into the soil, it was necessary to lengthen the nail stalk, which was very unstable. Also, in the case of the structure that travels through the furrows, the pulling conveyor and the excavating claw were placed on the left and right sides, so the left and right balance was poor and the running performance was poor, or the pulling accuracy was poor. Of.

[0004]

The present invention uses the following means in order to solve the above problems. That is, a pulling conveyor configured in a V shape in a plan view is arranged in front of the traveling body, a front portion of the pulling conveyor is arranged parallel to the traveling direction, and is arranged on the left and right center side of the body, and a rear portion is outside. It is bent to extend on the front end of the placing conveyor, and a digging claw is attached to the space in front of this bending portion, and a link mechanism for moving up and down the digging device is arranged, and the digging is performed. The claw extends below the front part of the pulling conveyor.

[0005]

By using the above means, the extraction conveyor is located between the traveling devices, the extraction conveyor is located at the position of the root vegetable on the ridge, and the tip of the nail is extracted by excavating from the side of the ridge. Inserted in the front lower part of the conveyor to lift the root vegetables and convey them backward by the pull-out conveyor, and at the bent part, the root vegetables change their posture in the horizontal direction and are taken over by the placing conveyor and conveyed horizontally backward. To be done.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the configuration of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of a self-propelled root vegetable harvester of the present invention,
2 is a plan view of the same, FIG. 3 is a front view of the same, and FIG. 4 is a plan view showing the positional relationship between the pulling conveyor B and the placing conveyor D.

The overall construction of the self-propelled root vegetable harvester will be described with reference to FIGS. 1 to 3. First, below the horizontal main frame 1, front crawler traveling devices 2L and 2R and rear crawler traveling devices 3L and 3R are arranged, and the front crawler traveling devices 2L and 2R are operated upward. The steering can be performed by the steering operation using the steering handle 5 arranged in the section G. The operating portion G is formed on the right front side of the main frame 1 and above the right crawler traveling device 2R. That is, the operation column 4 is erected on the upper right front of the main frame 1, and the steering handle 5 is provided on the upper part of the operation column 4. An engine compartment 6 is arranged behind the operation column 4, an engine is built in the engine compartment 6, and a driver's seat 7 is arranged on the engine compartment 6. Further, a fuel tank is mounted on the main frame 1 at a position behind the engine compartment 6.

From the left front side (opposite to the operation part G) of the main frame 1 to the rear side, a series of root vegetable harvesting devices for digging and transporting root vegetables, cutting off leaf portions and accommodating them are arranged in a row. First, the excavation device A for excavating root vegetables in the soil from the left front part of the main frame 1 and the rear part of the excavation device A sandwiching and excavating the root parts of the excavated root vegetables. A pull-out conveyor B, a loading conveyor D below the rear end of the pulling conveyor B, a leaf cutting device E outside the loading conveyor D, and a storage container F behind the loading conveyor D.

Each of the above series of root crop harvesting apparatuses will be specifically described. First, the excavation device A will be described. A rotation fulcrum shaft 1 is provided at the front end of the main frame 1.
4 is provided laterally, and the lower link 1 is attached to the rotation fulcrum shaft 14.
The rear part of 3.13 is pivotally supported, and the lifting frame 1 is attached to the rear part.
5 is erected, and a top link support portion 15a is provided on the upper end of the elevating frame 15, and the top link support portion 1 is provided.
The rear end of the top link 16 is pivotally supported by 5a. In this way, the lifting link mechanism is arranged on the front side of the pull-out conveyor B. Furthermore, the front end portion of the top link 16 and the front end portions of the lower links 13, 13 are pivotally supported by the front mast 12. At the front end of the front mast 12, an upper end of a hoe-shaped excavating claw 9 having a substantially L-shape when viewed from the front is attached so that the vertical position can be adjusted.
A gauge wheel 11 for deciding the height of the pawl is arranged below the front part of the front mast 12.

The upper part of the excavating claw 9 is fixed to the tip of a crank arm 10 extending from the inside of the front mast 12, and the rear end of the crank arm 10 is fixed to the front mast 1.
2 is pivotally supported on a cam that rotates around the output shaft of the excavating claw drive motor M1 that is a hydraulic motor fixed to the side surface.
The crank arm 10 makes a crank motion by the rotation of the cam driven by the motor, whereby the excavation claw 9
Is rocked back and forth to dig up in the soil.

An elevating arm 17 is fixed to a rear end of the lower link 13, and a tip end of the elevating arm 17 is a hydraulic cylinder 47 provided inside the elevating frame 15.
Is connected to the piston rod of the hydraulic cylinder 47.
By expanding and contracting, the lower links 13 and 13 rotate about the rotating shaft 14, the excavating claws 9 provided on the front mast 12 can be moved up and down, and the extraction conveyor B can also be moved up and down.

The pull-out conveyor B is a transfer frame 21L.
The transport frame 21 is configured to have a "V" shape in plan view, which is bent outward (to the left) from a substantially central portion of 21R in the front-rear direction.
Pulleys 23F ・ 23F ・ 2 at both front and rear ends of L ・ 21R
3R and 23R are arranged, pulleys 23C and 23C, pulleys 23d, and pulleys 23e and 23e are arranged on the bent portion 24 of the transport frame 21L, and sandwiching belts 25L and 25R are wound around these pulleys to guide them. Then, in FIG. 4, the pulleys 23R,
The rotary shafts 26L and 26R are passed through the axis of R, and the upper ends of the rotary shafts 26L and 26R are interlockingly connected to the bevel gear via a horizontal shaft, and the rotary shafts 26L and 26R are rotationally driven in opposite directions. By rotating the pulleys in opposite directions, the sandwiching belts 25L and 25R can be conveyed and driven backward.

Frames 20L and 20R are erected on a midway portion of the main frame 1, and a rotary shaft 27 is horizontally installed at an upper end portion thereof, and a drive shaft 27a is provided in the rotary shaft 27. A hydraulic motor M2 is provided horizontally at one end of the drive shaft 27a, and the rotary shaft 26 is provided via a bevel gear fixedly mounted on the drive shaft 27a by driving the hydraulic motor M2.
Power is transmitted to L, drives the pulley 23R, and drives the rotary shaft 26L as described above. The conveyance driving direction of the sandwiching belts 25L and 25R is as shown in FIG. 3, and the contact portion between the sandwiching belts 25L and 25R, that is, the portion that sandwiches the root vegetable leaf portion between the two belts is rearward from the front. It is designed to be driven and transported. The rear end of the right-side transport frame 21R is located in front of the left-side transport frame 21L, and the transport frame 21L is in a state of protruding to the rear,
The root vegetables can be efficiently conveyed to the left side of the placing conveyor D.

Further, the conveying frames 21L and 21R arranged side by side are connected integrally by the connecting frames 22, 22, ..., And the connecting frame 26, and the lower end of the connecting frame 26a is the rotating shaft 27. The connection frame 26b having the rotary shaft 26R therein is branched from the middle and is fixed to the right side of the rotary shaft 27 so that the pull-out conveyor B can be rotated around the rotary shaft 27. . Further, conventionally, the up-and-down drive of the excavating device A and the pulling conveyor B is operated separately, and in consideration of the interference area between the two mechanisms, a mechanism for rotating in synchronization in the interference area is required. Therefore, the present invention has the following mechanism,
The fact that the two mechanisms rotate at substantially the same time does not cause damage due to interference, and the pull-out conveyor B can be individually rotated as required.

That is, a conveyor elevating cylinder 29 is interposed between the front and rear central side surfaces of the transfer frames 21L and 21R and the side surface of the lower link 13 for elevating and lowering the excavating device A. Lifting cylinder 2
A pivot shaft 2 having a lower end portion 9 projecting from the lower link 13
8b is rotatably supported, and the upper end rotatably supports a pivot shaft 28a protruding on the left side of the connecting frame 22 so that the excavator A can be moved up and down at the same time as the pull-out conveyor B. The pulling conveyor B can be individually raised and lowered by driving the conveyor raising and lowering cylinder 29, and the height of the leaves can be adjusted.

Further, a divider 30 is removably arranged at the front end of the pull-out conveyor B, and the divider 30 has a pull-up chain case 32L for accommodating a drive chain provided with tines 39a. 32R are arranged on the left and right, and the drive of the chains in the pull-up chain cases 32L and 32R is transmitted from the front pulleys 23F of the pull-out conveyor B. Then, a tail cutting device 45 is disposed below the pulling conveyor B at the rear part thereof, and the roller guides the tail portion to the center and the cutter cuts the tip of the tail. The blade of the cutter is also rotated by the motor M.

The placement conveyor D is the frame 20L.
-Transfer rollers 33, 34, 35 are mounted on the 20R and are provided at the respective apexes of the convey frame 31 configured in a triangular shape in a side view.
And the conveyor belt 36 is wound around the conveyor belt 33,
Is arranged in the lower front portion, the transport rollers 34 are positioned below the rear portions of the transport frames 21L and 21R, and the forward inclined portion 42 is provided between the transport rollers 33 and the transport rollers 34, and the transport rollers 34 and the transport rollers 35 are The placement portions 38 are formed at substantially the same height and are substantially horizontal. And
Sprockets 33a, 34a, and 35a are provided on the right side of the transport rollers 33, 34, and 35, respectively, and the transport auxiliary chain 37R is wound in a triangular shape. Similarly, the sprocket 3 is also provided on the left side of the transport rollers 34 and 35.
4b and 35b are provided, and the transport auxiliary chain 37L is wound only in the horizontal portion, and the transport auxiliary chains 37L and 37R are wound.
Are provided with tines 39b, 39b ...

A sprocket 27c is provided on the drive shaft 27a, a sprocket 34c is fixedly mounted on the outer side of the sprocket 34b, and a chain is wound around the sprocket 34a. The power is transmitted from the drive shaft 27a to the sprockets 34a, 34b, 34c. The transport auxiliary chains 37R and 37L are rotated to drive the transport rollers 33, 34 and 35 to drive the transport belt 36. Further, the leaf portion cutting device E is provided outside (on the left side of) the middle portion of the placing portion 38.
In the leaf cutting device E, the rotary blades 40 and 41 are arranged so that part of the blades are vertically overlapped with each other, and power is taken out from the drive shaft 27a to remove the leaf portion while the root vegetables are being conveyed. I am able to disconnect. A shooter 46 is arranged below the leaf cutting device E.

In such a structure, the crawler traveling device 2L is positioned so as to travel in the valley, and the gauge wheel 11
The digging claw 9 is adjusted to a predetermined depth by the hydraulic cylinder 29 so that the divider 30 located at the tip of the pulling conveyor B is located above the ridge.
When the work is carried out while expanding and contracting, the root vegetables are dug up and lifted by the swinging of the nails 9, and the leaves of the root vegetables are brought to the center by the divider 30 and the holding belt 2
The leaf portion is sandwiched between 5L and 25R and is pulled out while being conveyed backward.

Then, the lower end of the root of the root vegetable is cut by the tail cutting device 45 during the upward transportation, and the root of the root vegetable is placed on the inclined portion 42 of the placing conveyor D from the vicinity of the bent portion 24. At the stage of being transported to the outside, the tail portion of the tine 3 of the transport auxiliary chain 37R is
Entered between 9b and 39b ..., placed on the conveyor belt 36 and gradually oriented in the horizontal direction. Then, when reaching the placement portion 38, the leaves also reach the tine 3 of the auxiliary chain 37L.
9b, 39b ... Entered between 9b and 39b ... and sent to the rear, the leaf cutting device E cuts excess leaves in the middle, leaves fall from the shooter 46 onto the ridges, and radish is placed in the storage container F. It will be stored.

[0021]

Since the present invention is constructed as described above,
It has the following effects. That is, since the pull-out conveyor is bent, the space for housing the link mechanism can be widened, and it does not interfere with the field of view during work, and
While transferring the root of the root vegetables from the bent part, it can be transferred to the placing conveyor by changing the posture horizontally and horizontally, and a device for changing the posture in the horizontal direction is not required and the structure is simple. Also,
Since the pull-out conveyor is located on the center side, the weight balance is improved, the posture during pulling is not changed, and the straight running performance is improved. Further, the traveling device stably travels in the valley portion and can excavate the claw from the side surface of the ridge so that the claw can be inserted and thus the resistance can be reduced and the claw can be deeply inserted into the soil, and the working efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a self-propelled root vegetable harvester of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view showing a positional relationship between a pulling conveyor B and a placing conveyor D.

[Explanation of symbols]

 A digging device B drawing conveyor D placing conveyor E leaf cutting device F storage container 1 main frame 2L / 2R front crawler device 9 digging claw 24 bending part 36 conveyor belt 37L / 37R conveyance auxiliary chain

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Matsui 428 Enami, Okayama City Seiray Industrial Co., Ltd. (72) Inventor Yukihiro Fukuda 428 Enami Okayama City Seiray Industrial Co., Ltd. (72) Inventor Akemi Okura 2828 Natsumi Nabari City, Mie Prefecture Takakita Co., Ltd.

Claims (1)

[Claims] 1. A pull-out conveyor configured in a dogleg shape in a plan view is arranged in front of the traveling machine body, and a front portion of the draw-out conveyor is arranged parallel to the traveling direction and arranged on the left and right center sides of the machine body.
The rear part is bent outward and extended on the front end of the loading conveyor,
The excavation claw is mounted in the space in front of this bent portion, and a link mechanism for moving up and down the excavation device is arranged, and the excavation claw is extended below the front part of the pulling conveyor. A characteristic self-propelled root crop harvester.