JP3458974B2 - Self-propelled root vegetable harvester - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled root vegetable harvesting machine that digs up root vegetables such as radish and carrot from the soil, pulls out and transports them, and stores them in a storage container. Drive configuration. 2. Description of the Related Art Conventionally, a root vegetable harvesting machine such as radish has been known.
The pulling conveyors and conveying devices of the traveling unit and the working unit from the engine are configured to be driven by transmitting power through a belt, a chain, or the like. [0003] However, the working unit of the root vegetable harvesting machine needs to be changed depending on the type of root vegetables, for example, the type of radish or carrot, and the working unit has a complicated structure. However, each of the movements may move in a different direction, so that the transmission configuration for transmitting the power is complicated and the transmission path is long. In addition, a driving device for each working unit must be able to withstand vibration and impact. In addition, when the working unit is a mechanical driving device, the driving speed of the working unit also changes depending on the traveling speed, and in particular, at low speeds, there has been a problem that the leaf cutting device does not function sufficiently. The present invention uses the following means in order to solve the above problems. Excavating root vegetables using excavator A, pulling conveyor
A) and transported backward by the loading conveyor C behind it,
When the leaf cutting device D is placed in the middle of the loading conveyor C,
Then, cut the tail at the bottom of the pulling conveyor B at the rear.
A tailing device 45 for cutting off is provided,
Multi-holding roller 65 and multi-cutter below the front end of
Excavator A in a self-propelled root vegetable harvester equipped with
When raising and lowering using the hydraulic cylinder 47,
The conveyor B is also raised and lowered.
By driving the cylinder 29, the pull-out
If it is configured that the conveyor B can be raised and lowered individually
In each case, a plurality of output pulleys are provided on the output shaft of the engine E, one of which drives a hydraulic pump P, drives each work machine with hydraulic oil from the hydraulic pump, and the other transmits power to a mechanical transmission case M. Driving the traveling device. [0005] By using the above-mentioned means, the working unit is driven by hydraulic pressure, and when the working unit is changed according to the type of root vegetables, the hose is easily replaced by replacing the hose. Since the power transmission mechanism can be changed and the working unit is hydraulically driven, each working unit can receive necessary power from the hydraulic pump regardless of the traveling speed even when the body is moving at a low speed. Embodiments 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, FIG. 3 is a front view, FIG. 4 is a plan view showing a positional relationship between a pull-out conveyor B and a placing conveyor C,
FIG. 5 is a transmission mechanism diagram of the drive unit. The overall configuration of the self-propelled root vegetable harvester will be described with reference to FIGS. First, a front crawler traveling device 2L, 2R and a rear crawler traveling device 3L, 3R are provided below the horizontal main frame 1, and the front crawler traveling device 2L, 2R is operated by an upper operation. The steering can be performed by a steering operation using a steering handle 5 arranged in the section G. The operation unit G is formed at the right front of the main frame 1 and above the right crawler traveling device 2R. That is, an operation column 4 is erected on the upper right front of the main frame 1, and a steering handle 5 is protruded above the operation column 4. An engine room 6 is provided behind the operation column 4. An engine E and a hydraulic pump P are built in the engine room 6, and a driver's seat 7 is provided on the engine room 6. The transmission case M
Are arranged. Further, at the rear position of the engine room 6,
A fuel tank is mounted on the main frame 1. [0008] A series of devices for harvesting root vegetables is arranged from the front left side of the main frame 1 (from the side opposite to the operation portion G) to the bottom to dig and transport the root vegetables, cut off the leaf portions, and house them. ing. First, a digging device A for digging root vegetables in the soil from the left front part of the main frame 1, and a pulling conveyor for holding and transporting the leaves of the digged root vegetables from the rear portion of the digging device A. B, a loading conveyor C, a leaf cutting device D outside the loading conveyor C, and a storage container F behind the loading conveyor C, below the rear end of the loading conveyor C. 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 the tank 76. [0009] Each working machine of the above series of root vegetable harvesting equipment will be described in detail. First, the excavator A will be described. A turning fulcrum shaft 14 is provided horizontally at the front end of the main frame 1, the rear portions of the lower links 13 are pivotally supported by the turning fulcrum shaft 14, and an elevating frame 15 is erected at the rear portion thereof. A top link support 15a is provided at an upper end of the lifting frame 15, and a rear end of the top link 16 is pivotally supported by the top link support 15a. As described above, the elevating link mechanism is disposed on the front side of the pull-out conveyor B. Further, the front end of the top link 16 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 formed in a substantially L-shape in a front view is attached so as to be able to adjust the vertical position. 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 attached to the front mast 1.
2, pivotally supported by a cam that rotates about the output shaft of a digging claw drive motor M1, which is a hydraulic motor fixed to the side surface,
The rotation of the cam driven by the motor causes the crank arm 10 to perform a crank motion, thereby causing the excavating claw 9 to move.
Swings back and forth and digs up in the soil. An elevating arm 17 is fixed to the rear end of the lower link 13, and a tip of the elevating arm 17 has a hydraulic cylinder 47 provided inside the elevating frame 15.
Is connected to a piston rod. By extending and contracting the hydraulic cylinder 47, the lower link 13 rotates about the rotation shaft 14, the excavating claw 9 provided on the front mast 12 can be raised and lowered, and the pulling conveyor B can also be raised and lowered. is there. The frames 20L and 20R are erected on the middle part of the main frame 1, and at the upper end thereof,
The rotating shaft 27 is horizontally mounted, and a driving shaft 27a is provided in the rotating shaft 27.
And a hydraulic motor M2 is provided at one end of the drive shaft 27a. By driving the hydraulic motor M2, the hydraulic motor M2 is mounted via a bevel gear fixed on the drive shaft 27a, a pull-out conveyor B, a sprocket and a chain. Conveyor C
Power. The drawing conveyor B is provided with a transfer frame 21.
L · 21R is bent outward from the substantially central portion in the front-rear direction of the L · 21R to the outside (left), and is formed in a “く” shape in plan view.
Pulleys 23F ・ 23F ・ at both front and rear ends of 1L ・ 21R
23R, 23R, pulleys 23C, 23C, pulley 23d, and pulleys 23e, 23e are disposed on the bent portion 24 of the transport frame 21L, and the holding belts 25L, 25R are wound around and guided by these pulleys. And in FIG. 4, the left and right rear pulleys 23R
The rotation shafts 26L and 26R are penetrated through the shaft of R, and the upper ends of the rotation shafts 26L and 26R are operatively connected to the bevel gear via a horizontal shaft. Since the rotating shaft 26L is connected to a bevel gear fixed on the drive shaft 27a, the rotating shaft 26L
The pulleys 26R are rotated in opposite directions, and the pulleys are rotated in opposite directions so that the holding belts 25L and 25R can be transported rearward. The transfer frames 21L, 21R arranged side by side are integrally connected by connecting frames 22, 22..., A connecting frame 26, and the connecting frames which house the rotary shafts 26L, 26R are provided. 26a ・ 26
The lower end of b is fixed to the left and right of the rotation shaft 27, and enables the pulling conveyor B to rotate about the rotation shaft 27. Further, the front and rear central side surfaces of the transfer frames 21L and 21R and the lower link 13 for raising and lowering the excavating device A.
A conveyor elevating cylinder 29 is interposed between the lower end of the conveyor and a lower end of the conveyor elevating cylinder 29 rotatably supported by a pivot shaft 28 b projecting from the lower link 13. The portion rotatably supports a pivot shaft 28a protruding from the left side of the connecting frame 22. When the excavating device A is moved up and down by using the hydraulic cylinder 47, the pulling conveyor B is simultaneously moved up and down. Further, by driving the conveyor lifting cylinder 29, the drawing conveyor B can be individually raised and lowered, and can be adjusted to the height of the leaves. At the front end of the pull-out conveyor B, a divider 30 is detachably mounted, and the divider 30 is a pull-up chain case 32L for accommodating a drive chain provided with tines 39a. 32R is disposed on the left and right, and the driving of the chains in the pull-up chain cases 32L and 32R is transmitted from the respective front pulleys 23F of the pull-out conveyor B. Further, below the front end of the drawing conveyor B, the multi-press roller 65 of the present invention is provided.
And a multi-cutter 67 are provided. A tail cutting device 45 is provided below the pulling conveyor B at the rear of the tail conveyor 45. The tail is guided to the center by a roller, and the tip of the tail is cut by a cutter. The blade of the cutter is rotated by a motor. The placing conveyor C is provided with the frame 20L.
• Each of the vertices of the transport frame 31 placed on the 20R and configured in a triangular shape in a side view is provided with transport rollers 33, 34.3.
5 is pivotally supported to wind the transport belt 36. Sprockets 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. A sprocket is also provided on the left side of the vehicle, and the auxiliary transport chain 37L is wound around only the horizontal portion, and the auxiliary transport chains 37L and 37R
Are provided with tines 39b at predetermined intervals. The transmission of the power to the loading conveyor C is performed by driving the transport belts 36R and 37L from the drive shaft 27a via sprockets and chains to drive the transport belt 36. Further, a leaf cutting device D is disposed outside (on the left side of) the middle portion of the mounting portion 38, and the leaf cutting device D has rotating blades 40 and 41 arranged so that the blades partially overlap each other vertically. , A hydraulic motor M3 disposed rearward, and the rotary blades 40 and 41 via pulleys and belts.
Is driven so that the leaves can be cut off while the root vegetables are being conveyed. A shooter S is arranged below the leaf cutting device D so that the shooter S falls to the upper part of the ridge after excavating the leaf. In the self-propelled root vegetable harvesting machine having such a configuration, 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, and M3 are connected in series. The hydraulic pump P is connected to the input pulley 7 of the hydraulic pump P via a belt from the output pulley 70 of the engine E.
The hydraulic pump P draws hydraulic oil from the hydraulic oil tank 76 and pumps it. A relief valve 75 is interposed at the discharge port of the hydraulic pump P, so that pressure oil higher than the set oil pressure is relieved to the tank, and a flow control valve is arranged at an intermediate portion of the hose. Of the hydraulic motors M1, M2, and M3 can be controlled. By connecting the relief valve 75 via a hose to the transmission system in which the working part is intricate, discharge pressure oil can be sent, and it is possible to easily cope with the rotating direction of the working part. Can also be used to adjust the speed of the working unit regardless of the running speed. The output shaft of the engine E transmits power from a belt wound around an output pulley 71 to a transmission case M via a pulley 73. The transmission case M adjusts the number of revolutions, and the bevel gear / differential mechanism. Drive the traveling devices 2L and 2R through the rear traveling devices 3L and 3R.
Is also driven from the transmission case M via a sprocket chain. As described above, the traveling devices 2 and 3 are provided with a mechanical driving mechanism so that the driving efficiency is increased, hydraulic pressure is applied to each working section, and the attachment is easily changed depending on the use (the type of root vegetables). The connection of power transmission is also made easy. In this way, the hydraulic pump P is driven by the engine E even when the vehicle speed is low because the working unit divided into two drive mechanisms is hydraulically driven, so that the working unit can be driven independently of the vehicle speed. Can be. The present invention is configured as described above.
The following effects are obtained. First , by using a hydraulic drive mechanism for the working unit, the tension can be released and the chain or belt removed, or the sprocket or pulley on the transmission shaft can be removed, and the working unit can be attached and detached simply by changing the hose. Can be easily done. Second, it has a structure that is resistant to vibration and shock, and can be driven through a hose even in a complicated shape of the working section, and the hose can move freely, so that it is possible to easily cope with a different rotating direction of the working section. Third, each working unit can be driven independently without being affected by the vehicle speed. No.
Fourth, since the traveling device is driven by the mechanical power transmission device, transmission can be performed efficiently.

BRIEF DESCRIPTION OF THE 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 drawing conveyor B and a placing conveyor C. FIG. 5 is a transmission mechanism diagram of a drive unit. [Description of Signs] A Excavating device B Pulling conveyor C Placing conveyor D Leaf cutting device F Storage container E Engine P Hydraulic pumps M1, M2, M3 Hydraulic motor

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mikio Matsui 428 Enami, Okayama-shi Seirai Industrial Co., Ltd. (72) Inventor Yukihiro Fukuda 428 Enami, Okayama-shi Seirai Industrial Co., Ltd. (72) Inventor Akemi Okura 2828 Natsumi, Nabari City, Mie Pref. Takakita Co., Ltd. (56) References JP-A-5-268817 (JP, A) JP-A-6-169621 (JP, A) JP-A-7-231710 (JP, A) Hira 2-20411 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 13/00-33/14

Claims (1)

(57) [Claims] [Claim 1] Root vegetables are dug up by a digging device A and pulled.
Carrying backward by pulling conveyor B and placing conveyor C behind it
And the leaf cutting device D is arranged in the middle of the placing conveyor C.
At the bottom of the drawer conveyor B at the rear.
A tail cutting device 45 for cutting the tail portion is provided.
A multi-holding roller 65 and a circle below the front end of the conveyor B
In the self-propelled root vegetable harvester equipped with the cutter 67, the excavator A is raised and lowered using the hydraulic cylinder 47.
At the same time, the pulling conveyor B is raised and lowered at the same time,
By driving the conveyor lift cylinder 29,
The drawing conveyor B can be individually raised and lowered.
In addition to the configuration, a plurality of output pulleys are provided on the output shaft of the engine E, one of which drives a hydraulic pump P and drives each work machine with hydraulic oil from the hydraulic pump, and the other is a mechanical transmission case M A self-propelled root vegetable harvester characterized by transmitting power and driving a traveling device.