JP2001016946A - Height-controlling mechanism for harvesting part of head-forming vegetable harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically control the vertical motion of a harvesting part attached to a mobile machine in a state enabling the control of vertical motion interlocked with the height detected by a ridge or furrow height sensor. SOLUTION: This head-forming vegetable harvester 1 has a mobile machine and a harvesting part 9 attached to the machine and vertically movable in a manner controlled by a controller. (1) A ridge height sensor 13 contacting with the upper face of a ridge holding a grown head-forming vegetable and detecting the height of the ridge is placed at the front part of the harvesting part 9 and the harvesting part 9 is automatically lifted or lowered with a controller interlocked with the ridge height detected by the ridge height sensor 13. (2) A furrow height sensor 13a contacting with the furrow between the head- forming vegetable growing ridges and detecting the height of the furrow is placed at the front part of the harvesting part 9 and the harvesting part is automatically lifted or lowered with a controller interlocked with the furrow height detected by the furrow height sensor 13a to harvest the head-forming vegetable at the optimum height.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically controlling the vertical movement of a harvesting unit mounted on a traveling machine body so as to be controlled vertically, in conjunction with the height detection of a ridge or ridge height sensor. The present invention relates to a mechanism for controlling the height of a harvesting part in a harvested head vegetable harvester.

[0002]

2. Description of the Related Art Conventionally, there is known a head vegetable harvesting machine in which a traveling machine body is equipped with a harvesting unit which is vertically controlled by a control device.

[0003]

In the above-mentioned head-cropping vegetable harvesting machine, a front end of a harvesting part whose base end is rotatably supported vertically is in contact with furrows (grooves) on both sides of a head-growing vegetable growing ridge. Wheels are provided that directly change the height of the harvesting section in accordance with changes in the height of the ridges while rolling with the running of the aircraft. For this reason, when the depth of the furrow (groove) is not constant or when there is an obstacle in the furrow, the height control of the harvesting part is not stable. In addition, there is a problem that the pilot needs to frequently perform the height adjustment operation of the harvesting unit. The present invention has been made to solve the above problems.

[0004]

In order to achieve the above object, the present invention provides: In a head vegetable harvesting machine equipped with a harvesting unit which is vertically controlled by a control device on a traveling machine body, a ridge height in front of the harvesting unit, which is in contact with an upper surface of a head cultivation ridge for rice cultivation and detects its vertical height. A sensor is provided, and the harvesting unit is automatically moved up and down via a control device in conjunction with the height detection of the ridge height sensor.

B. In a head vegetable harvester equipped with a harvesting unit that is controlled to move up and down by a control device on a traveling machine body, in the front part of the harvesting unit, a height between furrows that comes into contact with a furrow of a head for growing vegetable head and detects its vertical height. A sensor is provided, and the harvesting unit is automatically moved up and down via a control device in conjunction with the detection of the height of the furrow height sensor.

[0006]

With the above arrangement, the height control mechanism of the harvesting unit in the head vegetable harvester of the present invention performs the following operations. . By automatically moving the harvesting unit up and down via the control device in conjunction with the height detection of the ridge height sensor that touches the upper surface of the head cultivation ridge and detects its vertical height, the harvesting unit is Perform proper harvesting work while being held at height. Also,
Since the harvesting unit automatically moves up and down, the control operation of the harvesting unit by the operator is reduced, and the steering becomes easy. Then, the harvesting accuracy is improved, and the work efficiency is improved.

[0007] Since the harvesting unit is automatically moved up and down via the control device in conjunction with the height detection of the ridge height sensor that contacts the ridge of the head cultivated vegetable growing ridge and detects its vertical height,
The harvesting unit moves up and down almost properly to perform a proper harvesting operation.
In addition, the harvesting unit is automatically moved up and down, so that the control operation of the harvesting unit by the operator is reduced, so that easy operation is performed. Then, a high-accuracy harvesting operation with high harvesting accuracy is performed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In the first embodiment shown in FIG. 1 and FIG. 2, reference numeral 1 denotes a cabbage (headed vegetable) harvester. Equipped with crawlers 2 and 2 that can be changed. The engine 3 is mounted on the crawlers 2 and 2 near the left and right sides of the aircraft.
A transmission 4 including a hydraulic pump and a hydraulic continuously variable transmission (HST) is mounted near the engine 3 at a substantially central position on the left and right sides (approximately at a central position between the crawlers 2 and 2) of the airframe. Power is transmitted via the. A transmission system for transmitting power from the engine 3 to the hydraulic pump and the transmission 4 is provided with a tension clutch.

A pair of left and right scraping disks 5 and 5 for scraping cabbage vegetated in a field with the progress of the aircraft are provided at the front of the body, and the rhizomes of the cabbage are sandwiched following the scraping disks 5 and 5. And withdraw as the aircraft advances,
A pair of left and right screw conveyors 6 and 6 that convey diagonally upward and rearward are provided. This screw conveyor 6,
Above 6, there are provided nipping and conveying belts 7, 7 for nipping and transporting the head portion of the cabbage from both left and right sides. Also,
A cutting device 8 for cutting the rhizome of cabbage is provided above the screw conveyors 6, 6.
Is configured. At the front of the harvesting unit 9, a pair of left and right ground guide wheels 10 are provided to guide the machine body by rolling on both sides of the cabbage ridge.

The harvesting unit 9 has a base end rotatably supported vertically with respect to the machine body. The harvesting unit 9 is expanded and contracted by a hydraulic cylinder 11 interposed between the lower side of the harvesting unit 9 and the machine body. 9 is controlled to move up and down. At the tip of the sensor support arm 12 extending forward from one side of the harvesting unit 9,
A ridge height sensor 13 is provided in contact with the upper surface (actually, the shoulder surface) of the head cultivation ridge in front of the ridge 5 and the ground guiding wheel 10 to detect the vertical height thereof. This ridge height sensor 13
As shown in detail in FIG. 3, an upper plate-shaped sensor disk 16 is provided at the lower end of a swing arm 15 having an upper end pivotally supported on the control box 14 so as to be able to rotate back and forth. In contact with it, it is rotatably supported in the direction of the arrow as the fuselage advances. An operating element 14a is provided at the upper end rotating portion of the swing arm 15.
And an up switch 14b and a down switch 14c are provided at predetermined intervals at front and rear positions of the operation element 14a. The interval between the two switches 14b and 14c is adjustable.

When the cabbage is harvested by the cabbage harvester 1, when the height of the upper surface of the cabbage cultivation ridge increases, the sensor disc 16 is pushed up, and the swing arm 15 rotates counterclockwise. The child 14a presses the raising switch 14b to operate a solenoid valve (not shown) of the hydraulic cylinder 11 to extend the hydraulic cylinder 11 and raise the harvesting unit 9. When the harvesting unit 9 is raised, the sensor disk 16 is lowered, the pressing of the raising switch 14b by the operating element 14a is released, the extension of the hydraulic cylinder 11 is stopped, and the lifting of the harvesting unit 9 is stopped. When the height of the upper surface of the cabbage cultivation ridge decreases, the sensor disk 16 descends, the operator 14a presses the descending switch 14c, the hydraulic cylinder 11 contracts, and the harvesting unit 9 descends. Thus, the ridge height sensor 13 automatically moves the harvesting unit 9 up and down.

A transport section 18 comprising a transport belt 17 for transporting the cabbage toward the rear of the machine is provided continuously with the transport end of the screw conveyor 6 and the nipping transport belt 7. A cabbage placing belt 19 that receives the cabbage discharged from the transport unit 18 and discharges the lower leaves below the body is provided behind the transport unit 18. On both left and right sides of the cabbage placing belt 19, control units 20, 20
Is provided. Behind the control unit 20 and the cabbage placing belt 19, a worker space 22 provided with a step 21 (or a seat where the worker sits) where the worker stands is provided.

The worker space 22 and the control unit 20
Stock tables 23, 23 are provided on both left and right sides of the container to store the cabbage discharged from the transport unit 18 by an operator. At the rear of the fuselage, two rear ground wheels 25 are provided via a vertically rotating arm 24, and the rear ground wheel 25 is moved up and down by a hydraulic cylinder 26 interposed between the vertically rotating arm 24 and the fuselage. It has become.

The transport section 18 is supported so as to be slidable in the front-rear direction when the harvesting section 9 is largely turned upward. The right and left crawlers 2 and 2 are moved up and down by the expansion and contraction operation of the hydraulic cylinder 2a to perform horizontal control of the machine body in the left and right direction. The grounding wheel 25 is moved up and down by a hydraulic cylinder 26 to control the longitudinal balance of the body. Further, the left and right stock tables 23 are detachable via detachable parts 27, 27.

In the transmission 4 which receives power from the engine 3 and shifts, a continuously variable hydraulic transmission (HST) which continuously changes the speed and a transmission gear are used to change the speed between stepless and stepped. Crawlers 2, 2 by connecting and disconnecting power transmission via differential device
Of the vehicle is steplessly and stepped. Further, a brake device is provided in connection with the differential device. When the steering lever is largely operated, the side clutch, the differential mechanism, and the brake are operated to spin the aircraft.

Each of the rotary driving units including the scraping wheels 5 and 5, the screw conveyors 6 and 6, the nipping and conveying belt 7, and the conveying belt 11 can adjust the rotational speed and the moving speed so that the speed is stepless and stepped. By combining this with the stepless or stepped speed change traveling of the crawlers 2, 2, the harvesting speed of the head cabbage can be freely set. In addition, the screw conveyors 6, 6, the nipping and conveying belt 7, the conveying belt 17 and the like are used when traveling on the road or turning at the field edge.
In a state where the hydraulic cylinder 11 is extended and rotated largely upward by manual operation, and the tip side is raised, traveling on the road is facilitated, and headland turning can be performed with a small area.

Next, the operation of the cabbage harvester 1 of the first embodiment configured as described above will be described. When the cabbage harvester 1 performs a harvesting operation in a field where cabbage is grown, the sensor disk 1 of the ridge height sensor 13 is used.
6 is grounded on the shoulder of the cultivation ridge, the grounding guide wheels 10, 10 are straddled on the cultivation ridge, the scraping wheels 5, 5 are opposed to the cabbage row, the screw conveyors 6, 6, the sandwiching conveyance belt 7, the conveyance The rotation units such as the belt 17 and the cutting device 8 are driven so that the crawlers 2 and 2 travel the machine body. Then, the cabbage vegetated on the cultivation ridge is raked by the raking wheels 5, 5 and the rhizomes are clamped from both sides by the screw conveyors 6, 6, and the rotation of the screw conveyors 6, 6 itself It is pulled out by the forward movement of the fuselage and sent backward without any stagnation. The airframe is guided by the ground guidance wheels 10 and 10 and travels automatically. At this time, if there is a height on the upper surface of the cultivation ridge, it is
The harvesting unit 9 is moved up and down by expanding and contracting the hydraulic cylinder 11.

Then, the cabbage is scraped to an appropriate height by the scraping wheels 5, 5, and the screw conveyor 6,
6 transported. While the cabbage is conveyed backward, the sides are nipped by the nipping and conveying belt 7 and move in a stable posture, and the rhizome is cut by the cutting device 8 during the movement. Cabbage with rhizome cut
7 and is discharged from the conveying end to the cabbage placing belt 19, and is held by a worker with the stock table 23.
Stock at The lower leaves (outer leaves) discharged from the transport end of the transport belt 17 are discharged to a field below the machine.

FIGS. 4 and 5 show a second embodiment of the present invention. The cabbage harvester 1 of the second embodiment is provided with a ridge height sensor 13a instead of the ridge height sensor 13 of the first embodiment. The ridge height sensor 13a is connected to a control box 28 fixed to the body by a sensor wheel 30 at the tip of a swing arm 29 whose base end is rotatably pivoted back and forth. It is pivoted so that it rotates with progress. An operator 28a is provided at a base end rotating portion of the swing arm 29, and an up switch 28b and a down switch 28c are provided at predetermined intervals at front and rear positions of the operator 28a. The distance between the two switches 28b and 28c is adjustable.

In the cabbage harvester 1 of the second embodiment, when cabbage is harvested in a field, if the height of the ridges of the cabbage cultivation ridge becomes high, the sensor wheel 30 is pushed up to swing the arm. 29 rotates clockwise, and the operating element 28a presses the up switch 28b to operate the solenoid valve of the hydraulic cylinder 11 to extend the hydraulic cylinder 11 and raise the harvesting unit 9. When the harvesting unit 9 rises, the sensor wheel 30 descends, and the operating element 28
The pressing of the raising switch 28b by a is released, the extension of the hydraulic cylinder 11 stops, and the raising of the harvesting unit 9 stops. When the height of the furrow becomes low, the sensor wheel 30 descends, the operator 28a presses the descending switch 28c, the hydraulic cylinder 11 contracts, and the harvesting part 9 descends. Thus, the furrow height sensor 13a automatically moves the harvesting unit 9 up and down.

[0021]

As described above, according to the height control mechanism of the harvesting portion in the head vegetable harvester of the present invention, the following operational effects can be obtained.

[0022] At the front of the harvesting unit, a ridge height sensor is provided that comes into contact with the upper surface of the head cultivation ridge and detects the height of the ridge. Is automatically moved up and down, so that the harvesting unit is always maintained at an appropriate height and can perform an appropriate harvesting operation. Further, since the harvesting unit automatically moves up and down, the number of operations for the operator to control the harvesting unit up and down is reduced, and the steering can be performed easily. Then, the harvesting accuracy of the harvester can be increased, and the work efficiency can be improved.

[0023] At the front of the harvesting unit, a furrow height sensor is provided in contact with the furrow of the head cultivation ridge and detects the vertical height of the furrow. The harvesting unit is controlled via the control unit in conjunction with the furrow height sensor. Is automatically moved up and down, so that the harvesting unit can move up and down properly to perform a proper harvesting operation.
In addition, since the harvesting unit is automatically moved up and down, the number of operations for raising and lowering the harvesting unit by the operator is reduced, and the steering can be easily performed. Then, the harvesting accuracy is improved, and efficient harvesting work can be performed.

[Brief description of the drawings]

FIG. 1 is a plan view of a cabbage (head vegetable) harvester of a first embodiment according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a schematic side view of a ridge height detection sensor (disk).

FIG. 4 is a side view of a cabbage harvester according to a second embodiment of the present invention.

FIG. 5 is a schematic side view of a ridge height detection sensor (wheel).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cabbage (head vegetable) harvester 2 Crawler 2a Hydraulic cylinder 3 Engine 4 Transmission 5 Raising wheel 6 Screw conveyor 7 Nipping and conveying belt 8 Cutting device 9 Harvesting part 10 Ground guide wheel 11 Hydraulic cylinder 12 Sensor support arm 13 Ridge height sensor 13a Furrow height sensor 14, 28 Control box 14a, 28a Operator
14b, 28b Up switch 14c, 28c Down switch 15, 29 Swing arm 16 Sensor disk 17 Conveyor belt 18 Conveyor unit 19 Cabbage placing belt 20 Operating unit 21 Worker step 22 Worker space 23 Stock table 24 Vertical rotation Arm 25 Grounding wheel 26 Hydraulic cylinder 27 Detachable part 30 Sensor wheel

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinya Ino 684 Nakafurune, Okayama City, Okayama Prefecture Kobashi Kogyo Co., Ltd. F-term (reference) 2B075 AA10 GA01 GA06

Claims (2)

[Claims] 1. A head vegetable harvesting machine equipped with a harvesting unit which is controlled to move up and down by a control device on a traveling machine body. A ridge height sensor for detecting a ridge height is provided, wherein a ridge height sensor for detecting is provided, and the harvesting unit is automatically moved up and down via a control device in conjunction with the height detection of the ridge height sensor. Harvester height control mechanism. 2. A head-cropping vegetable harvesting machine having a traveling machine body equipped with a harvesting unit controlled to move up and down by a control device, wherein a front part of the harvesting part is in contact with a ridge of a head-grown vegetable growing ridge and has a vertical height. In a head vegetable harvesting machine, a ridge height sensor for detecting is provided, and the harvesting unit is automatically moved up and down via a control device in conjunction with the height detection of the ridge height sensor. Harvester height control mechanism.