JPH1033040A - Harvester for vegetable with formed head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject harvester capable of longitudinally tilting as well as vertically moving a container stand mounted in the rear thereof. SOLUTION: This harvester has such scheme that the machine body mounted with a pair of left and right crawlers 2 is also mounted with a pair of left and right screw conveyors 6 to pull out the root stem of a vegetable with formed head planted in the field so as to firmly hold it from both left and right sides under rotation along with the travel of the machine body and to convey it toward the rear of the machine body, and the root of the vegetable conveyed by these screw conveyors 6 is cut by a cutting device equipped along the screw conveyors 6; and the formed head freed from the root is housed in a container 10 placed on a container stand 11 mounted in the rear of the machine body in a vertically movable way and the container stand 11 is mounted with a cylinder 19 for vertical movement and another cylinder 22 for tilt movement so as to subject the container stand 11 to longitudinal pressure control as well as vertical movement control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to cabbage, Chinese cabbage,
The present invention relates to a head vegetable harvesting machine that harvests head vegetables such as lettuce from a field, and stores the head part from which the roots have been cut off in a container provided at the rear of the machine body, and allows a mounting table for mounting the container to be raised and lowered and tilted back and forth. .

[0002]

2. Description of the Related Art Conventionally, as a head vegetable harvesting machine for harvesting head vegetables vegetated in a field, a body equipped with a pair of left and right crawlers has a rhizome portion of a head vegetable vegetated in a field. A pair of left and right screw conveyors that pull out from the field with the advancement of the aircraft while rotating so as to pinch from both sides and transport toward the rear of the aircraft are provided, and the roots of head vegetables transported by this screw conveyor are along the screw conveyor. There has been proposed a configuration in which a head portion cut by a provided cutting device and whose root portion is cut is accommodated in a container placed on a container mounting table provided at the rear of the machine so as to be able to move up and down.

[0003]

In the above-mentioned conventional head-mounted vegetable harvesting machine, the container mounting table only moves up and down in the vertical direction. The head could not be adjusted to be almost constant, and if the head was large, the head could be damaged by impact. Further, when the head portion in the container becomes full and the container is loaded on a truck or the like, the attitude of the container cannot be sufficiently controlled. The present invention has been made to solve the above problems.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an airframe equipped with a pair of right and left crawlers.
A pair of left and right screw conveyors for pulling out of the field with the progress of the body while rotating so as to pinch the rhizome part of the head vegetable vegetated in the field from both the left and right sides and transporting it toward the rear of the body are provided. The root portion of the transported head vegetables is cut by a cutting device provided along a screw conveyor, and the head portion whose root portion has been cut is stored in a container mounted on a container mounting table provided at the rear of the machine so as to be able to move up and down. In the head vegetable harvesting machine, the lifting cylinder and the tilt cylinder are provided on the container mounting table, and the container mounting table is configured to perform vertical posture control together with vertical movement control. Features.

[0005]

With the above arrangement, the headless vegetable harvesting machine of the present invention controls the container mounting table in the front-rear direction together with the vertical movement control, so that the head-cut head is cut from the transport end to the inside of the container. The head at the time of dropping and housing can be adjusted substantially constant, and the head can be housed without damage. Also, when the head portion in the container is full and the container is loaded on the carrier of the transport vehicle, the lift stroke of the container mounting table increases,
Loading can be easily performed by arbitrarily controlling the posture of the container.

[0006]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3, reference numeral 1 denotes a head-mounted vegetable harvesting machine, which is equipped with crawlers 2 and 2 that form a left-right pair and enable spin rotation. An engine 3 is mounted on the crawlers 2 and 2 near the left and right sides of the fuselage. At the front side of the engine 3, hydraulic pumps 4 and A transmission 5 including a hydraulic continuously variable transmission (HST) is mounted, and power is transmitted from the engine 3 via a counter shaft. Although not shown, the transmission system for transmitting power from the engine 3 to the hydraulic pump 4 and the transmission 5 is provided with a tension clutch.

[0007] From the lower front near the left and right sides of the body, passing over the engine 3 to the rear of the machine, holding the rhizome of head vegetables (cabbage) vegetated in the field, pulling it out with the advance of the machine, and diagonally upward and rearward. A pair of left and right screw conveyors 6 and 6 for conveying are provided. Although not shown, the screw conveyors 6 and 6 have a disc-shaped root cutting blade (not shown) for cutting the rhizomes and lower leaves of the head vegetables, which are conveyed to the lower front, and are conveyed to the upper rear. A re-cutting blade is provided to cut the rhizome while holding the rhizome of the coming head vegetable. The base ends of clew conveyors 6, 6 are
It is pivotally supported by the fuselage to move up and down the front part.
A driver's seat 7 and an auxiliary worker step 8 are provided on the front and rear sides of the fuselage opposite to the screw conveyors 6 and 6 on the other side.

The screw conveyors 6 and 6 are pulled out from the field as the machine body advances while rotating while holding the rhizomes of the head vegetables (cabbage) vegetated in the field from both right and left sides. Head vegetables,
And a transport unit that takes over while holding the rhizome, and transports it obliquely upward and rearward of the fuselage. Behind the transport end of this transport section, a horizontal feed conveyor 9 having a transport end opened to the side of the machine is provided.
A forklift-shaped container mounting table 11 for mounting a container 10 as an accommodating unit for accommodating a head portion obtained by cutting a rhizome and a lower lobe is provided behind the container.

As shown in FIG. 4 and FIG. 5, the container mounting table 11 is
3 and the elevating horizontal frames 14, 14a are supported so as to be able to elevate and lower, and a tilt vertical frame 1 is provided at both ends of the elevating horizontal frames 14.
This tilt vertical frame 1 is pivotally supported at the upper end of 5, 15
The tilt horizontal frames 16 and 16a are provided between the tilt horizontal frames 16 and 15 and fork portions 17 and 17 are provided on both sides of the tilt horizontal frames 16a.
Is provided. Then, an elevating cylinder 19 is interposed between the cylinder bracket 18 provided on the elevating horizontal frame 14 and the main body frame, and the container mounting table 11 is largely moved up and down by the expansion and contraction operation of the elevating cylinder 19 and the elevating chain 20. I try to make it.

Further, a tilt cylinder 22 is provided between the cylinder bracket 21 provided on the elevating horizontal frame 14a and the tilt horizontal frame 16. The tilt vertical frame 15, 15, the tilt horizontal frames 16, 16 a, the forks 17, 17, and the like rotate around the lifting horizontal frame 14 by the expansion and contraction operation of the tilt cylinder 22, and the forks 17, 17 are rotated. The container 10 mounted on the container 17 is rotated in the front-rear direction and the posture control in the front-rear direction, that is, the tilt posture control is performed together with the above-described vertical control.

Above the screw conveyors 6,6, a pair of endless wide belts 23,23 for holding and conveying both sides of the head vegetables conveyed by the screw conveyors 6,6, Above the start end side of the sandwiching / transporting belts 23, 23, the upper portion (top portion) of the head vegetables that are supported swingably in the vertical direction and are transported.
And a posture control belt 24 composed of an endless belt for controlling the posture by holding down.

The transverse conveyor 9 is inclined so that the front side is higher and the rear side is lower with respect to the machine body, and the inclination angle can be adjusted. The head portion released onto the conveyor 9 is tilted at an angle such that it rolls by its own weight, and the container 10 is opened below the tilt of the horizontal conveyor 9. In addition, a separation plate (not shown) is provided below the inclined portion of the lateral feed conveyor 9 to allow the rolling head portion to pass and prevent the lower lobe from passing. The transport end of the horizontal feed conveyor 9 is open to the side of the machine.

On the left and right sides of the tip portions of the screw conveyors 6,6, a scraping wheel 25 which rotates inward in the horizontal direction and inwardly sprouts head vegetables vegetated in the field toward the screw conveyors 6,6. , 25 are provided.
The scraping wheels 25, 25 are tilted forward with a center line substantially parallel to the axis of the screw conveyors 6, 6, and movably supported in a predetermined range in the left-right direction and the horizontal direction. ing.

At the lower front part of the screw conveyors 6, 6,
A disk-shaped cutting blade is provided for cutting the root of the lower end of the rhizome of head vegetables conveyed by the screw conveyors 6, 6, and the screw conveyors 6, 6 and the clamping / transporting belt 2 are provided.
3, 23, an attitude control belt 24, a scraping wheel 25,
The rear end of the support frame that supports 25 and the like is pivotally supported so as to be able to rotate vertically with respect to the body. A working unit vertical cylinder 26 is interposed between the lower side of the support frame and the machine body, and the screw conveyors 6, 6 and the scraping wheels 25, 25 are operated by the expansion and contraction operation of the working unit vertical cylinder 26. And the like are rotated about a pivot shaft and moved up and down (elevated and lowered).

In the transmission 5 which receives power from the engine 3 and shifts, a continuously variable hydraulic transmission (HST) and a shift gear are used to shift continuously and steplessly by a speed change gear. The power transmission is connected and disconnected via a differential device so that the crawlers 2 and 2 can be stepped and stepped at variable speeds. Further, a brake device is provided in connection with the differential device. Then, by operating the operation lever 27, the side clutch, the differential mechanism, and the brake are actuated to enable the aircraft to spin.

The operation lever 27 is operated by one lever to steer (turn) the machine body in both the left and right directions, the screw conveyors 6, 6, the holding / transport belts 23, 23, the attitude control belt 24, and the scraper. It also performs a vertical movement operation of a working unit such as the wheels 25, 25 and is operated by a hydraulic circuit shown in FIG.

The hydraulic circuit includes a hydraulic unit 28 including an oil tank T, a pump 4 driven by the engine 3, a relief valve R, and the like, and a side clutch cylinder (R) operated by switching a solenoid valve 29 for a side clutch. 30 or a side clutch cylinder (L) 31, a brake cylinder 32, the working unit vertical cylinder 26 which is operated by a working unit vertical solenoid valve 33, and one check valve provided in the circuit. C, and four throttle valves F and the like. Then, the solenoid valve 29 for the side clutch and the solenoid valve 33 for the vertical movement of the working part are
7 is selectively operated.

The above-mentioned solenoid valve 2 for the side clutch
Cylinder (R) 3 operated by 9
Alternatively, the hydraulic circuit of the cylinder clutch (L) 31 and the brake cylinder 32 may be configured as shown in FIG. That is, the circuit from the solenoid valve 29a for the side clutch to the cylinder 32 for the brake is provided with two check valves C, a throttle valve F, and a variable relief valve VR. With this circuit, the expansion / contraction speed of the brake cylinder 32 can be made variable, and the working speed of the brake can be adjusted.

Further, a side clutch cylinder (R) operated by a side clutch solenoid valve 29 is provided.
The hydraulic circuit of the cylinder 30, the side clutch cylinder (L) 31, and the brake cylinder 32 may be configured as a circuit shown in FIG. That is, a throttle valve F is provided in a circuit extending from the side clutch solenoid valve 29b to the brake cylinder 32 through the side clutch cylinder (R) 30 or the side clutch cylinder (L) 31, and exhaust from the brake cylinder 32 is performed. A variable relief valve VR is provided in the oil path. A return spring 34 is interposed between the ports of the side clutch cylinders 30 and 31 and in FIG. 8B. This circuit simplifies the configuration and makes the brake cylinder 32
The expansion / contraction speed of the brake is variable, the braking speed can be adjusted, and the response of the side clutch improves.

Each of the rotary drive units, including the screw conveyors 6, 6, the attitude control belt 24, the scraping wheels 25, 25, can adjust the rotational speed and the moving speed to be continuously or stepwise. By combining this with the stepless or step-variable running of the crawlers 2 and 2, it is possible to freely set the harvesting speed of the head vegetables. Further, the screw conveyors 6, 6, the attitude control belt 24 and the scraping wheel 25,
25 and the like, when traveling on the road or turning work at the end of the field, the working unit up / down cylinder 26 is extended to rotate the working unit around the pivot shaft, and the traveling end is raised, and And the headland turning can be performed in a small area.

Next, the operation of the headless vegetable harvesting machine 1 configured as described above will be described.

For example, when performing a harvesting operation in a field where cabbage, which is a headless vegetable, is cultivated, the head-cropping vegetable harvesting machine 1 controls the operating parts such as the scraping wheels 25, 25 and the screw conveyors 6, 6 by operating levers 27. By operating the solenoid valve 33 for raising and lowering the working part to extend and retract the cylinder 26 for raising and lowering the working part, the scraping wheel 2
5, 25, the screw conveyors 6, 6 and the attitude control belt 24, the cutting blade, the re-cutting device, the horizontal conveyor 9 and the like are driven to rotate, and the crawlers 2, 2 travel on the cultivation ridge. Then, the cabbage vegetated on the cultivation ridge is scraped by the scraping wheels 25, 25, and the rhizomes are pinched from both sides by the screw conveyors 6, 6, and by rotation of the screw conveyors 6, 6 and running of the machine body. It is pulled out and sent backward without delay.

Then, the cabbage pulled out by the screw conveyors 6, 6 is conveyed rearward and taken over by the conveying section, and conveyed so as to rise at a steep angle toward the rear of the machine body. In this transporting process, the cabbage is pressed from above by the posture control belt 24 and moves in a stable posture, and during the movement, the root is cut from the rhizome to the cutting blade. The attitude control belt 24 is moved up and down and parallel to the front and rear, and is pressed properly in accordance with the size, interval, etc. of the cabbage to correct the attitude and perform a reliable transport, and the root of the rhizome is fixed by the cutting blade. Cut at position.

The working units such as the screw conveyors 6 and 6, the scraping wheels 25 and 25, and the attitude control belt 24 are adjusted up and down by expanding and contracting the working unit vertical cylinder 26 by the operation lever 27, so that a high-precision harvesting is performed. Work is performed. At the end of transport of the screw conveyors 6, 6, the base of the rhizome and the lower lobe from the bulbous portion are cut at appropriate positions by the re-cutting device.

The lower leaf including the head and the rhizome, which is obtained by cutting the base of the rhizome and the lower leaf, is clamped and conveyed by the belt 23,
In the process of dropping from the transport end of 23 onto the traverse conveyor 9 and being transported by the traverse conveyor 9, the head portion rolls by its own weight and is automatically accommodated in the container 10,
The rhizome and the lower leaves are discharged to the field from the transport end of the horizontal conveyor 9. Therefore, the sorting operator on the sorting operator's step 8 only needs to monitor the container 10 and monitor the trouble on the horizontal conveyor 9. Container 10
When the amount of the head portion accommodated in the container is small, the container placing portion 11 is raised by the elevating cylinder 19 to approach the horizontal conveyor 9, and further, the container is moved by the tilt cylinder 22 as shown by the phantom line in FIG. Tilt 10
By lowering the container mounting portion 11 as the amount of the head portion in the container 10 increases and adjusting the tilt angle, the distance of the head portion into and out of the container 10 and the falling distance are kept substantially constant. It is possible to reduce the damage of the bulb portion accommodated in the head.

When the head portion in the container 10 becomes full, the harvesting operation is temporarily interrupted, and the machine body is moved to the agricultural road section or the harvest has already been completed in a state where the front side of the working section is lifted by the working section vertical cylinder 26. The container placing part 11 is vertically adjusted by the elevating cylinder 19, and the container 10 is loaded on the carrier of a carrier, or
Drop it on the ground. At this time, the container 10 can be easily loaded on the carrier or lowered to the ground by controlling the vertical movement by the lifting / lowering cylinder 19 and the front / rear posture by the tilt cylinder 22. And a new container 10
Is mounted on the container mounting part 11 and the harvesting operation is restarted.

When the airframe is turned on the headland at the edge of the field during the harvesting operation, the operation lever 27 is operated to operate the operation unit vertical cylinder 26 to move the operation unit upward, and thereafter, the operation lever 27 is operated. The solenoid valve 29 for the side clutch is operated, and the cylinder (R) 30 for the side clutch or the cylinder (L) 3 for the side clutch is operated.
1 and the brake cylinder 32 are operated to turn the airframe to the left or right, and if the operation lever 27 is continuously operated in the same direction, the airframe can be rotated to spin.
After turning the fuselage, the working unit vertical cylinder 26 is operated by the operating lever 27 to adjust the height of the working unit. However, the operation of the operating lever 27 enables the turning operation of the aircraft and the up and down adjustment of the working unit. Is good.

[0028]

As described above, according to the headless vegetable harvesting machine of the present invention, the container mounting table is provided with the lifting cylinder and the tilt cylinder, and the container mounting table is controlled in the vertical direction together with the vertical control. As the head is controlled, the head can be adjusted almost uniformly when the head with the root cut is dropped from the transport end and accommodated in the container without damaging the head. Can be accommodated. In addition, when the head portion in the container is full and the container is loaded on the carrier of the transport vehicle or the like, the lift stroke of the container mounting table becomes large, and the container can be arbitrarily controlled to perform loading. .

[Brief description of the drawings]

FIG. 1 is an overall side view of a head vegetable harvester according to 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 side view of a main part of the present invention.

FIG. 5 is a rear view of a main part of the present invention.

FIG. 6 is a hydraulic circuit diagram of a control section (operation lever) of the headless vegetable harvester according to the present invention.

FIG. 7 is a hydraulic circuit diagram of a second embodiment of a control unit (operation lever).

8A is a hydraulic circuit diagram of a third embodiment of a control unit (operating lever), and FIG. 8B is a sectional view of a side clutch cylinder.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Head vegetable harvester 2 Crawler 3 Engine 4 Hydraulic pump 5 Transmission including hydraulic continuously variable transmission (HST) 6 Screw conveyor 7 Driver's seat 8 Sorting worker's step 9 Lateral conveyor 10 Container 11 Container mounting table 12 Main frame 13 Elevating vertical frame 14, 14a Elevating horizontal frame 15 Tilt vertical frame 16, 16a Tilt horizontal frame 17 Fork 18 Cylinder bracket 19 Elevating cylinder 20 Elevating chain 21 Cylinder bracket 22 Tilt cylinder 23 Nipping / transport belt 24 Attitude control belt 25 Scraping wheel 26 Working part vertical cylinder 27 Operating lever 28 Hydraulic unit 29,29a, 29b Side clutch solenoid valve 30 Side clutch cylinder R 31 Side clutch Cylinder L 32 Brake Cylinder 33 Solenoid Valve for Working Unit Up / Down 34 Return Spring

Claims (1)

[Claims] 1. An airframe equipped with a pair of right and left crawlers,
A pair of left and right screw conveyors for pulling out of the field with the progress of the body while rotating so as to pinch the rhizome part of the head vegetable vegetated in the field from both the left and right sides and transporting it toward the rear of the body are provided. The root portion of the transported head vegetables is cut by a cutting device provided along a screw conveyor, and the head portion whose root portion has been cut is stored in a container mounted on a container mounting table provided at the rear of the machine so as to be able to move up and down. In the head vegetable harvesting machine, the container mounting table is provided with an elevating cylinder and a tilting cylinder, and the container mounting table is configured to be vertically controlled and vertically controlled. Characteristic head cropping machine.