JPH078061A - Onion harvester - Google Patents

Abstract

PURPOSE:To simplify a driving system of a transverse feeding conveyor device and prevent a chute from being clogged with mud. CONSTITUTION:This onion harvester is equipped with the first conveyor device 7 for conveying each onion 5 dug with a front digger 6 to the rear, the second conveyor device 8 for receiving the onion 5 from the first conveyor device 7, further conveying the onion to the rear upward and then conveying the onion to the rear in the horizontal direction and a transverse feeding conveyor device 10 for receiving the onion 5 conveyed with the second conveyor device 8 and transversely feeding the onion in the left and right directions. The middle part in the left and right directions of the transverse feeding conveyor device 10 is foldable in the vertical directions.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an onion harvester.

[0002]

2. Description of the Related Art As this seed onion harvester, for example, those disclosed in Japanese Patent Application No. 63-166344 or Japanese Patent Application No. 3-7610 and drawings are known. These conventional onion harvesters include a first conveyor device that conveys the onion digged by the front digging device to the rear, and an onion from the first conveyor device that further conveys the onion to the upper rear and then the rear. A second conveyor device that conveys in a horizontal direction and further turns it upside down and conveys it to the front, and a second conveyor device that is arranged below the second conveyor device and receives an onion that falls from the second conveyor device, and then receives a left and right direction. And a lateral feed conveyor device for laterally transporting the same.

The transverse feed conveyor device is capable of switching the conveying direction to the right or left. In either case, the onion is stored in a container, and in the opposite direction, it is conveyed through a chute. It was configured to discharge the onion onto the ridge.

[0004]

In the above-mentioned conventional onion harvesting machine, since the conveying direction of the transverse feed conveyor device can be switched forward and backward, its drive system is complicated.
In addition, since a chute is used for discharging onto the ridge, there is a problem that the chute is clogged with mud or the like and the discharging performance deteriorates. Especially when it was raining, there were cases where the work could not be done due to severe mud clogging.

Therefore, in order to solve these problems,
When discharging the onion on the ridge without storing it in the container,
Removing the transverse feed conveyor device or changing the position of the transverse feed conveyor device so as not to hit the onions falling from the second conveyor device (for example, turning up and down around one edge in the front-back direction) However, in both cases, the connection structure of the power system becomes complicated.

Therefore, an object of the present invention is to provide an onion harvesting machine having a simple power transmission system and capable of discharging ridges without using a chute.

[0007]

In order to achieve the above object, the present invention takes the following means. That is, the feature of the present invention is that the first conveyor device that conveys the onion digged by the front digging device to the rear, and the onion from the first conveyor device, and further conveys to the upper rear. In the onion harvesting machine, there is further provided a second conveyor device that conveys the rearward horizontal direction, and a horizontal feed conveyor device that receives the onions conveyed by the second conveyor device and horizontally feeds the onion horizontally. The conveyor device is characterized in that the middle part of the left-right direction is bendable in the up-down direction.

[0008]

According to the present invention, the lateral feed conveyor device is horizontally extended in the left-right direction and is rotated in one direction to convey the onion on the conveyor device in one direction. In this state, the onion is stored in the container installed at the end of the conveyor device in the transport direction.

On the other hand, when the onion is discharged onto the ridge, the transverse feed conveyor device is bent downward from the midway portion of its longitudinal direction and rotationally driven in the same direction as described above. Then, the onion on the transverse feed conveyor device falls from the bent portion onto the ridge.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 2, the onion harvester is self-propelled and has a body 2 supported by a pair of left and right crawlers 1. A pilot seat (not shown) is provided on one left and right side of the front part of the body 2, and an engine 3 is mounted on the other side.

A digging device 6 for digging the onion 5 planted in the ridge 4 of the field is provided in the front part of the machine body 2. A first conveyor device 7 for conveying the onions 5 dug by the mining device 6 to the rear is provided in the machine body 2 behind the mining device 6. The onion 5 conveyed by the first conveyor device 7 is received by the machine body 2 behind the first conveyor device 7, conveyed upward rearward, then conveyed rearward horizontally, and further inverted and conveyed forward. A second conveyor device 8 is provided for this purpose. A cutting device 9 for cutting the foliage 5a of the onion 5 is provided on the rear body of the second conveyor device 8 and below the second conveyor device 8. Furthermore, below the second conveyor device 8 and the cutting device 9
A lateral feed conveyor device 10 for laterally laterally transporting the onion 5 is provided in the machine body 2 in front of the.

The digging device 6 has a pair of right and left swing frames 11, and the swing frame 11 has an upper end portion which is a swing shaft.
It is supported by 12 relatively rotatably, and the midway portion in the vertical direction is swingably supported by a stay 13 pivotally supported by the machine body 2. A divider 14 is attached to the lower end portions of the pair of right and left swing frames 11 via a mounting device 15 so that the attachment angle can be adjusted in the vertical direction and the horizontal direction. Further, a comb-tooth-shaped excavating member is provided between the lower ends of the pair of right and left swing frames 11.
16 is installed.

The rocking shaft 12 is rotatably supported on the front part of the machine body 2, and eccentric parts are provided at both ends of the rocking shaft 12, and the eccentric part of the rocking frame 11 is provided. The upper part is supported so as to be relatively rotatable. When the rocking shaft 12 rotates, the rocking frame 11 rocks, whereby the excavating member 16 provided at the lower end rocks in the vertical direction, and the onion 5 planted in the ridge 4 is moved. Dig up.

The first conveyor device 7 has a pair of front and rear support shafts 17 and 18, and includes a pair of left and right conveyor chains 19 circulated between the front and rear support shafts 17 and 18 so as to be freely circulated. Have. The pair of left and right conveyor chains 19 are connected by horizontal rails 20 arranged at a predetermined pitch along the longitudinal direction, and onions 5 are placed on the horizontal rails 20 and transported. Since the rear support shaft 18 is disposed above the front support shaft 17, the conveyor chain 19 is inclined rearward and upward.

The second conveyor device 8 has a pair of front and rear support shafts 21 and 22, and a pair of upper and lower intermediate shafts 23 arranged between the front and rear support shafts 21 and 22. A pair of left and right conveyor chains 24 are circulated between the front and rear support shafts 21 and 22 through 23 so as to be freely circulated. Intermediate shaft 23 and rear support shaft 22
Are arranged at substantially the same height, and the intermediate shaft 23 is the front support shaft 21.
Since the conveyor chain 24 is disposed at a position higher than that of the first conveyor device 7, the conveyor chain 24 has a sloped portion 25 that is inclined rearward and upward at a steeper angle than the inclination angle of the first conveyor device 7, and a horizontal portion that follows the sloped portion 25. Cycle with 26.

A holding device 27 for holding the onion 5 is provided between the pair of left and right conveyor chains 24 at a predetermined pitch along the longitudinal direction of the chain 24. This holding device 27
It consists of a pair of cages that can be opened and closed freely. The cage is opened at the inclined portion 25 so as to be able to receive the onion 5 from the first conveyor device 7, closed at the horizontal portion 26 so as to be able to hold the onion 5, and the rear end portion of the horizontal portion 26. When the scent carrying direction is reversed, the onion 5 is reversed while being held, and when it is reversed and moved forward by a predetermined amount, the holding state is released and the onion 5 is dropped downward. There is.

The cutting device 9 includes a cutting blade 28 of a hair clipper type.
Has a reciprocating right and left direction, and the cutting blade 28 has the second
When the onion 5 is turned upside down at the rear part of the conveyor device 8 and conveyed forward, it is arranged at a position where the foliage 5a hanging from the bulb portion of the onion 5 held by the holding device 27 is cut from the bulb portion. The lateral feed conveyor device 10 has a conveyor belt 29 provided so as to be circulated and fed back in the left-right direction. Onion 5 whose stems and leaves 5a were cut by the cutting device 9
After being conveyed by a predetermined amount by the second conveyor device 8, the bulb portion of is dropped onto the conveyor belt 29 arranged below due to the hug release of the holding device 27, and is laterally fed to the container 30. It is either stored or released on the ridge.

FIG. 1 shows details of the transverse feed conveyor device 10. In the figure, a horizontal feed conveyor device 10
Has a fixed frame 60 arranged on the machine body 2 in the left-right direction, and the fixed frame 60 extends from one end of the machine body 2 in the left-right direction to the vicinity of the central portion. The fixed frame
Rollers 61, 62 are rotatably supported at the left and right ends of 60. A detour roller 63 is arranged on the fixed frame 60 diagonally below the roller 62 located near the center of the machine body 2. Further, the fixed frame 60 is provided with a tension roller device 64. The tension roller device 64 includes a tension roller 65 and the roller 65.
An L-shaped arm 66 pivotally supported by the fixed frame 60 for supporting the tension roller 65, and an elastic support device 67 connected to the arm 66 for biasing the tension roller 65 downward.

A movable frame 68 is rotatably supported at the end of the fixed frame 60 located in the vicinity of the center of the machine body 2 in the left-right direction. The movable frame 68 can be positionally fixed by about 90 ° in a horizontal state and a vertical state with the roller 62 pivotally supported at the end of the fixed frame 60 as a rotation center. A roller 69 is attached to the tip of the movable frame 68.
Is pivotally supported.

The conveyor belt 29 is wound around the rollers 61, 62, 69, 63, 65 so as to pass therethrough. By maintaining the movable frame 68 in a horizontal state by an operation means (not shown), the onion 5 on the conveyor belt 29 is stored in the container.
Store in 30. Also, by bending downward by 90 °, the onion 5 on the conveyor belt 29 is discharged onto the ridge 4. During this bending, the tension roller device 64 automatically absorbs the slack of the conveyor belt 29.

According to the above-described embodiment of the present invention, the transverse feed conveyor device 10 is rotationally driven in the same direction, and its movable frame is
By bending 68, the onion 5 can be collected in the container 30 and discharged onto the ridge 4, so that the drive system does not need to be able to rotate in the forward and reverse directions, so the structure of the drive device is simplified. . In addition, since the chute is not used when discharging it onto the ridge, unlike the conventional case, there is no possibility that mud or the like will get stuck in the chute.

FIG. 3 shows a power transmission system diagram of the onion harvester having the above construction. Power from the engine 3 is transmitted through the counter shaft 31 to the input shaft 33 of the deceleration mission case 32.
Be transmitted to. The mission case 32 is provided with a first output shaft 34 and a second output shaft 35 that reduce the power of the input shaft 33 at a predetermined speed reduction ratio and output the power. From the input shaft 33 and the second output shaft 35 through a clutch, a crawler drive shaft 36
The high speed power and the low speed power are extracted. The crawler drive shaft 36 drives the crawler 1,
Aircraft 2 runs.

The swing shaft 12 of the excavator 6 is rotationally driven from the first output shaft 34 via the drive chain 37 and the relay shaft 38. Power is transmitted from the second output shaft 35 to the input shaft 42 of the bevel gear box 41 via the drive chain 39 and the torque limiter 40. An output shaft 43 of the bevel gear box 41 that is orthogonal to the input shaft 42 is used as a drive shaft 43 of the conveyor belt 29 of the transverse feed conveyor device 10. This drive shaft 43
Is a crankshaft 44 that drives the cutting blade 28 of the cutting device 9.
Is linked to.

The input shaft 42 of the bevel gear box 41 and the rear support shaft 22 of the second conveyor device 8 are interlockingly connected via a drive chain 45 and a relay shaft 46. This rear support
Reference numeral 22 is a shaft continuous in the left-right direction, and sprocket wheels 47 for driving the conveyor chain are fixed to both left and right sides of the support shaft 22. The front support shaft 21 of the second conveyor device 8 is a shaft divided into left and right, and a driven sprocket 48 for a conveyor chain is fixed to each of the left and right support shafts 21. in this way,
By separating the front support shaft 21 from the right and left and providing a space between the left and right support shafts 21, it is possible to prevent stones or the like from being caught between the cage of the holding device 27 and the support shaft.

One of a pair of left and right support shafts 21 at the front part of the second conveyor device 8 and a rear support shaft 18 of the first conveyor device 7 are interlocked by a drive chain 49. According to the embodiment of the present invention having the above-described structure, the power of the engine 3 is generated by the counter shaft 31 → the input shaft 33 of the deceleration mission case 32.
→ second output shaft 35 → torque limiter 40 → input shaft 42 of bevel gear box 41 → rear support shaft 22 of second conveyor device 8 → front support shaft 21 → transmitted to rear support shaft 18 of first conveyor device 7, The first conveyor device 7 and the second conveyor device 8 are driven.

The second conveyor device 8 has a rear support shaft.
22 is the drive shaft, and the onion is placed on the upper surface side.
Since 5 is driven to be transported backward, the upper surface of the conveyor chain 24 is free to pull. Further, the power transmitted to the input shaft 42 of the bevel gear box 41 drives the roller 61 of the transverse feed conveyor device 10 by the output shaft 43 thereof to rotate the conveyor belt 29 in one direction, and also the cutting. Drive the cutting blade 28 of the device 9.

In the above embodiment, one torque limiter 40 is used.
Is configured to absorb the overload of the first conveyor device 7, the second conveyor device 8, the cutting device 9, and the transverse feed conveyor device 10, so that any one of them is overloaded. However, since other devices are stopped, it is possible to detect the occurrence of trouble early. The present invention is
The present invention is not limited to the above-described embodiment, and is not limited to the self-propelled type, but may be applied to a tractor or the like towed.

[0028]

According to the present invention, the structure of the drive system of the transverse feed conveyor device is simplified, and since it is not necessary to use a chute as in the conventional case, clogging of mud is prevented.

[Brief description of drawings]

FIG. 1 is a drawing showing an embodiment of the present invention and showing details of a transverse feed conveyor device as a main part thereof.

FIG. 2 is a configuration diagram showing an entire embodiment of the present invention.

FIG. 3 is a power transmission system diagram of an embodiment of the present invention.

[Explanation of symbols]

 5 Onion 6 Digging device 7 1st conveyor device 8 2nd conveyor device 10 Horizontal feed conveyor device

Claims (1)

[Claims] 1. A first conveyor device that conveys the onions rearwardly excavated by the front excavator, and a rearward horizontal direction after receiving the onions from the first conveyor device and further conveying them upward and rearward. In an onion harvesting machine comprising a second conveyor device for carrying and a lateral feed conveyor device for receiving the onions carried by the second conveyor device and laterally feeding them in the left-right direction, wherein the lateral feed conveyor device has left and right sides thereof. The onion harvester is characterized in that the middle part of the direction can be bent vertically.