JPH0823742A - Self-propelled root crop harvester - Google Patents

Abstract

(57) [Abstract] [Purpose] In the power transmission configuration to the working unit and the traveling device of the root vegetable harvester, the working unit can be stably driven regardless of the speed of the traveling device, and the working unit can be easily changed. It can be so. [Configuration] A root vegetable having a configuration in which a root vegetable is dug up by a digging device A, is conveyed backward by a pulling conveyor B and a placing conveyor C behind the pulling conveyor B, and a leaf cutting device D is arranged in the middle of the placing conveyor C. In the harvester, the output of the engine E can be output in two directions, and the one drives the hydraulic pump P so that each working machine can be driven by the pressure oil.
On the other hand, the traveling device can be driven via a mechanical transmission case.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, root vegetable harvesters for radish and the like have been known, and the drive configuration when the root vegetable harvesters are self-propelled
The pulling conveyor and the conveying device for the running section and the working section from the engine are configured to be driven by transmitting power with a belt or a chain.

[0003]

However, the working section of the root vegetable harvester needs to be changed according to the type of root vegetable, for example, radish or carrot, and the working section has a complicated configuration. Since each of them may move in different directions, the transmission structure for transmitting power was complicated, and the transmission path was long. And, the driving machine of each working unit needs to be able to withstand vibration and shock. Further, in the case where the working unit is a mechanical drive device, the driving speed of the working unit also changes depending on the traveling speed, and there arises a problem that the leaf cutting device does not function sufficiently especially at low speeds.

[0004]

The present invention uses the following means in order to solve the above problems. That is, a root vegetable harvester having a structure in which root vegetables are dug up by a digging device, conveyed backward by a pulling conveyor B and a placing conveyor C behind the pulling conveyor B, and a leaf cutting device D is arranged in the middle of the placing conveyor C. In the engine E, the output shaft of the engine E is provided with a plurality of output pulleys, one of which drives the hydraulic pump P, each of the working machines is driven by the pressure oil from the hydraulic pump, and the other of which transmits power to the mechanical transmission case. The traveling device was driven.

[0005]

By using the above means, the working unit is hydraulically driven, and when changing the working unit depending on the type of root vegetables, the power transmission mechanism can be easily changed by replacing the hose. In addition, since the working units are hydraulically driven, each working unit can receive the necessary power from the hydraulic pump without depending on the traveling speed even when the machine body is traveling at a low speed.

[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, FIG. 4 is a plan view showing the positional relationship between the pulling conveyor B and the placing conveyor C,
FIG. 5 is a transmission mechanism diagram of the drive unit.

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 E and a hydraulic pump P are built in the engine compartment 6, and a driver's seat 7 is arranged on the engine compartment 6. And the mission case M in the lower center
Is provided. Furthermore, at the rear position of the engine room 6,
A fuel tank is mounted on the main frame 1.

A series of root vegetable harvesting devices for digging and transporting root vegetables, cutting off leaf portions, and accommodating the root vegetables are arranged from the front left side (opposite operation part G side) of the main frame 1 to the rear side. 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 pulling conveyor B, a loading conveyor C below the rear end of the pulling conveyor B, a leaf cutting device D outside the loading conveyor C, and a storage container F behind the loading conveyor C. Further, a hydraulic oil tank 76 is arranged on the main frame 1 below the drawing conveyor B, and a relief valve 75 is arranged in front of it.

Each working machine of the above series of root crop harvesting apparatus will be specifically described. First, the excavation device A will be described. A rotation fulcrum shaft 14 is laterally provided at the front end of the main frame 1, a rear portion of the lower links 13, 13 is pivotally supported by the rotation fulcrum shaft 14, and an elevating frame 15 is erected at a rear portion thereof. A top link support portion 15a is provided on an upper end portion of the elevating frame 15, and a rear end portion of the top link 16 is pivotally supported on the top link support portion 15a.
In this way, the lifting link mechanism is arranged on the front side of the pull-out conveyor B. And further, the top link 16
The front end of the lower link 13 and the front end of the lower link 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.

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 are rotated around the rotation shaft 14, the excavation 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.

Frames 20L and 20R are erected on the middle part of the main frame 1, and the upper ends thereof are
The rotating shaft 27 is mounted horizontally, and the rotating shaft 27 has a drive shaft 27a.
And a hydraulic motor M2 is provided at one end of the drive shaft 27a. Stationary conveyor C
The power is transmitted to.

The pull-out conveyor B is a transfer frame 21.
The transport frame 2 is configured to have a dogleg shape in a plan view, which is bent outward (left) from a substantially central portion of the L · 21R in the front-rear direction.
Pulleys 23F ・ 23F ・ on both front and rear ends of 1L ・ 21R
23R 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 shaft center of R, and are linked to the bevel gears via the horizontal shaft at the upper ends of the rotary shafts 26L and 26R.

Since the rotary shaft 26L is connected to a bevel gear fixedly mounted on the drive shaft 27a, the rotary shaft 26L.
26R are rotationally driven in opposite directions, and the respective pulleys are reversely rotated so that the sandwiching belts 25L and 25R can be conveyed and driven backward.

Further, the transfer frames 21L and 21R arranged side by side are connected integrally by connecting frames 22 and 22 ..., and a connecting frame 26, and the connecting frames in which the rotary shafts 26L and 26R are installed are incorporated. 26a ・ 26
The lower end of b is fixed to the left and right of the rotary shaft 27, and the pull-out conveyor B is rotatable about the rotary shaft 27. Further, the front and rear central side surfaces of the transport frames 21L and 21R, and the lower link 13 for moving the excavating device A up and down.
A conveyor elevating cylinder 29 is interposed between the side surface of the intermediate part and a lower end of the conveyor elevating cylinder 29 so as to be pivotally supported by a pivot shaft 28b projecting from the lower link 13 and an upper end thereof. The unit rotatably supports a pivot shaft 28a projecting from the left side of the connecting frame 22, and when the excavator A is moved up and down by using the hydraulic cylinder 47, the pulling conveyor B is also moved up and down at the same time. Further, by driving the conveyor elevating cylinder 29, the pulling conveyor B can be individually moved up and down, 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. Further, below the front end of the pulling conveyor B, the multi-press roller 65 of the present invention is provided.
And a multi-cutter 67 are arranged. 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 rotated by a motor.

The placing conveyor C 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.
Is wound around the conveyor belt 36, and a sprocket is provided on the right side of each of the conveyor rollers 33, 34, and 35, and the auxiliary conveyor chain 37R is wound in a triangular shape.
Similarly, a sprocket is also provided on the left side of the transport rollers 34, 35, and the transport auxiliary chain 37L is wound only in the horizontal portion. The transport auxiliary chains 37L, 37R are provided with tines 39b, 39b ... Is attached.

Power is transmitted to the mounting conveyor C by driving the transport auxiliary chains 37R and 37L from the drive shaft 27a through a sprocket and a chain to drive the transport belt 36. Further, the leaf cutting device D is arranged outside (on the left side) of the middle part of the placing portion 38, and the leaf cutting device D is arranged with the rotary blades 40 and 41 so that part of the blades are vertically overlapped. , The hydraulic motor M3 is arranged rearward, and the rotary blades 40 and 41 are connected via pulleys and belts.
The leaf part can be cut while the root vegetables are being conveyed. A shooter S is provided below the leaf cutting device D so that the leaf S is dropped to the upper part of the ridge after excavating the leaf.

In the self-propelled root vegetable harvester having such a structure, the hydraulic cylinders 29 and 47 and the hydraulic motors M1, M2 and M3 are arranged at the above-mentioned locations, and as shown in FIG. Are connected in parallel via a switching valve, and the hydraulic motors M1, M2, M3 are connected in series. The hydraulic pump P is the output pulley 7 of the engine E.
Input pulley 72 of hydraulic pump P from 0 through belt
The hydraulic pump P sucks the hydraulic oil from the hydraulic oil tank 76 and pumps it. A relief valve 75 is provided at the discharge port of the hydraulic pump P so that pressure oil higher than a set hydraulic pressure is relieved to the tank, and a flow control valve is arranged in the middle of the hose to provide a relief valve 75. It is also possible to control the number of rotations of the hydraulic motors M1, M2 and M3.

By connecting from the relief valve 75 through a hose, the discharge pressure oil can be sent to the intricate transmission system of the working unit, and the rotating direction of the working unit can be easily dealt with. Can be used to adjust the speed of the working unit regardless of the traveling speed.

Further, the output shaft of the engine E transmits power to a mission case M from a belt wound around an output pulley 71 via a pulley 73, and the transmission speed is adjusted by the mission case M to adjust a bevel gear / diff mechanism. The traveling devices 2L and 2R are driven through the rear traveling devices 3L and 3R.
Is also driven from the mission case M via a sprocket chain.

As described above, the traveling devices 2 and 3 are provided with a mechanical drive mechanism so that the drive efficiency is high, hydraulic pressure is used for each working unit, and the attachment can be easily changed according to the purpose (type of root vegetable). Power transmission can be easily connected. In this way, by hydraulically driving the working unit divided into two drive mechanisms, the hydraulic pump P is driven by the engine E even when the vehicle speed is low, so that the working unit can be driven independently of the vehicle speed. You can

[0023]

Since the present invention is constructed as described above,
It has the following effects. In other words, by using a hydraulic drive mechanism for the work part, it is easy to remove the work part by simply replacing the hose without releasing the tension to remove the chain or belt or the sprocket or pulley on the transmission shaft. It has a structure that is resistant to vibration and impact, and can drive even complicated shapes of the working part through a hose, and since the hose can move freely, it is possible to easily respond even if the rotating direction of the working part is different, vehicle speed It is possible to drive each working unit independently without being affected by. Further, since the traveling device is driven by the mechanical power transmission device, it can be efficiently transmitted.

[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 C.

FIG. 5 is a transmission mechanism diagram of a drive unit.

[Explanation of symbols]

 A Digging device B Extraction conveyor C Loading conveyor D Leaf cutting device F Storage container E Engine P Hydraulic pump M1, M2, M3 Hydraulic motor

 ─────────────────────────────────────────────────── ─── 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 structure in which a root cutting device is dug up by a digging device, conveyed backward by a pulling conveyor B and a placing conveyor C behind it, and a leaf cutting device D is arranged in the middle of the placing conveyor C. In the root crop harvester, a plurality of output pulleys are provided on the output shaft of the engine E, one drives the hydraulic pump P, each working machine is driven by the pressure oil from the hydraulic pump, and the other powers the mechanical transmission case. A self-propelled root vegetable harvester characterized by driving a traveling device.