JP2000069828A - Foliage cutter for harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foliage cutter for harvesters capable of preventing e.g. any failure to cut foliage or the resultant cut ends from being uneven by forming a pair of guides over and below the cutter. SOLUTION: This foliage cutter is designed to hold the foliage portion B1 of a crop B plowed out from a ridge A via an extracting conveyor 6 for upwardly conveying it, to hold the lower section of the foliage portion B1 than the above holding section for extraction via a positioning conveyor 7 for backwardly conveying it, and to cut the foliage portion B1 via a cutter 70 between the holding section for extraction subjected to the extracting conveyor 6 and holding section for positioning subjected to the positioning conveyor 7. There are formed a pair of guide members 73 and 74 for receiving and guiding the foliage portion B1 while facing to the cutter 70 above and below the cutter 70 between the holding section for extraction and holding section for positioning of the foliage portion B1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gauge wheel device for a harvester used mainly for harvesting bulbous crops such as onions, garlic, ginger, lilies or crops such as carrots, radishes and burdock.

[0002]

2. Description of the Related Art Conventionally, an onion harvesting machine for harvesting onions grown on ridges is disclosed in Japanese Patent Application Laid-Open No. 9-84427. This type of onion harvester digs up crops with a digging tool provided at the front while moving the traveling body along the ridge, and pinches the foliage of the digged onion with a pulling and conveying device and raises it rearward and upward. Along with the conveyance, the foliage portion below the holding portion is pinched by the positioning conveyance device and conveyed rearward, and in the middle of the conveyance, the foliage between the holding portion of the pull-out conveyance device and the nipping portion of the positioning conveyance device, The section is configured to be cut by a cutter.

[0003]

In the above-mentioned prior art, the foliage is held between the pull-out conveyance device and the positioning conveyance device. However, since the nipping portion is separated from the cutter, the foliage is cut during cutting. May escape, cut off, and may cause irregular cuts. An object of the present invention is to solve the above problems.

According to the present invention, a pair of guide members are provided above and below the cutter, and a guide member is provided above the cutter and overlapped with the cutter, thereby preventing cutting and leakage of the foliage and unevenness of the cut end. It is an object of the present invention to provide a foliage cutting device of a harvester that can be used.

[0005]

A first concrete means for solving the problem in the present invention is that a foliage B1 of a crop B dug up from a ridge A is nipped by a pulling and conveying device 6 and is conveyed upward. At the same time, the foliage B1 below the pulling and holding portion
Is transported rearward by being pinched by the positioning transport device 7,
In the foliage cutting device of the harvester, which cuts the foliage B1 with the cutter 70 between the pulling and holding portion of the pulling and conveying device 6 and the conveying and holding portion of the positioning and conveying device 7 during the conveyance, the foliage of the foliage B1 is pulled out. A cutter 7 is provided above and below the cutter 70 between the holding portion and the transport holding portion.
That is, a pair of guide members 73 and 74 for guiding while receiving the foliage B1 against 0 are provided.

Thus, at the time of cutting, even if the foliage B1 is pushed by the cutter 70, the guide member 7 is held by the upper and lower sides thereof.
3, 74, and cut normally without escaping from the cutter 70. A second specific means for solving the problem in the present invention is that, in addition to the first specific means, the upper guide member 73 is extended from the outside of the cutter 70 in an overlapping state, so that That is, they cross at two positions.

As a result, the foliage B1 is positively pressed against the cutter 70 by the upper guide member, and is cut more normally without escaping from the cutter 70. The third specific means for solving the problem in the present invention is that, in addition to the first or second specific means, the cutter 70 is provided so as to be capable of adjusting the position upward and rearward, and the lower guide member 74 is attached to the cutter 70.
, The upper and lower guide members are arranged substantially in parallel, and substantially along the position adjusting direction of the cutter 70.

Accordingly, even if the cutter 70 is provided so as to be adjustable rearward and upward for changing the cutting position of the foliage B1, the upper and lower guide members 73 and 74 are at substantially appropriate positions with respect to the cutter 70 at each position. It is arranged and the foliage B1 is cut normally. Fourth solution to the problem in the present invention
The concrete means of the foliage B1 of the crop dug from the ridge
While being conveyed upward after being pinched by the pull-out conveyance device 6,
The foliage B1 below the pulling and holding portion is pinched and transported rearward by the positioning and transporting device 7 between the pulling and holding portion of the pulling and transporting device 6 and the transport and holding portion of the positioning and transporting device 7 during the transport. In the foliage cutting device of the harvester for cutting the foliage B1 by the cutter 70, the cutter 70 is provided so as to be capable of adjusting the rear upward position, and is located above the cutter 70 between the pull-out clamping portion and the transport clamping portion. A guide member 73 for guiding the cutter 70 while receiving the foliage B1 substantially along the position adjusting direction of the cutter 70;
The guide member 73 is extended from the outside of the cutter 70 in an overlapping state and intersects the outer periphery of the cutter 70 at two positions.

Thus, even when the foliage B1 is pushed by the cutter 70 at the time of cutting, the foliage B1 is received by the guide member 73 on the upper side thereof, and is normally cut without escaping from the cutter 70. Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5, the harvester 1 exemplifies a walking-type onion harvester, which is capable of traveling (forward / reverse) in the longitudinal direction of the ridge over a ridge A, and on both left and right sides of the traveling machine body 1A. Driving wheels (rear wheels) 2L and 2R, and a steering wheel 51 in the upper rear portion, and a gauge wheel having a gauge wheel (follower wheel, front wheel) 3 only on one of the left and right sides of the traveling body 1A, only the right side in the drawing. Equipment.

[0010] In the present embodiment, the ridge A is made of a crop (onion).
B is a case where four rows of B are harvested, and the onion harvesting machine 1 is reciprocated with respect to one ridge A, and two ridges A on one side in the left and right direction (right side) on the outward path. An example is shown in which an excavation and foliage cutting process of the crop B is performed, and on the return path, an excavation and foliage cutting process of the other (left) two crops B is performed. .

The traveling machine 1A of the harvester 1 has a weeding device 4, a scraping device 5, a pull-out transport device 6, a positioning transport device 7, and a transport device 7 between the pull transport device 6 and the positioning transport device 7 from the front to the rear. In addition, a foliage cutting device 8 and an aligning / discharging device (discharging means) 9 provided in the apparatus are arranged, and these are attached to and supported by the body frame 12 to form a main structure. The body frame 12 is formed of a square or round cylindrical member, a plate member, or the like, and a pair of left and right main frame members 12 arranged in the front-rear direction.
A and a connecting frame member connecting the rear ends thereof to each other.

A pair of left and right subsoilers (digging tools) 10 for expanding and softening the ridge A are provided at the front of the body frame 12 in order to easily pull out the onions. The pair of left and right subsoilers 10 includes a support 10A and the support 1.
Each of the blade portions 10B is bent inward in the left-right direction from the lower end of 0A, and is formed in an L shape when viewed from the front. The subsoiler 10 is located on the outer side in the left-right direction near the lower portion of the pull-out and transport device 6, and as shown in FIG.
Is pivotally supported on the side of the body frame 12 via a pivot 14 so as to be rotatable around an axis in the left-right direction, and a front end side of a push / pull rod 15 is pivotally connected above the pivotal support portion. The subsoiler 10 is configured to reciprocate back and forth around the pivot 14 by pushing and pulling the pull rod 15 back and forth through a driving means (not shown).

When the subsoiler 10 reciprocates and oscillates back and forth, the ridge A is cut and vibrated at a position below the crop B, the ridge A is expanded and softened, and the crop B is dug up. I am helping. The engine 11 is mounted on the rear of the body frame 12.
1 is transmitted to a power transmission mechanism in a transmission case 13 mounted on the body frame 12, and from the transmission case 13, power is output by a PTO shaft 17 protruding forward. Power is transmitted to power transmission mechanisms and the like in the left and right transmission cases 19L and 19R via a mechanism or the like, and the left and right drive wheels 2L and 2R are configured to be rotationally driven.

One of the left and right transmission cases 19L and 19R, on the other hand, the left transmission case 19L in FIG.
It can be expanded and contracted (expanded and contracted) in the left and right directions via a left and right expansion and contraction guide mechanism 20 and a telescopic transmission cylinder 21 having a nest structure provided at the rear of the rear part. Thus, the pair of left and right drive wheels 2L and 2R can roll on the ridge groove A1.

The power from the PTO shaft 17 is transmitted to a drive shaft in a transmission case 22 supported on the side of the body frame 12 so as to be freely connected to and disconnected from the drive shaft. Is transmitted to the pulling-out transporting device 6, from which the power is transmitted to the scraping device 5 and the positioning transporting device 7.
The power is transmitted to the aligning / discharging device 9 from the apparatus.

The weeding device 4 is a weeding transmission case 30 fixed to a support plate 16 fixed to the distal ends of the left and right main frame members 12A of the body frame 12, and is supported by upper and lower portions of the case 30. Sprocket wheels 31 and 32 and an endless chain 33 wound around the wheels 31 and 32
And a tine 34 attached to the chain 33 so as to be able to move up and down in the longitudinal direction, and a weeding member (divider) 35 provided at a lower portion of the weeding transmission case 30 and extending forward. ing.

Three weeding transmission cases 30 are inclined downward in the forward direction, and three are arranged side by side at an interval in the left-right direction, one for the shoulder on the side of the ridge A and one for the two between the strips of the crop B, respectively. And the foliage B1 or ridge A of the crop B which has been laid down toward the next crop streak by the tines 34 circulating in the X direction (FIG. 4), which are located on the left and right sides of the crop B.
The foliage B1 that has fallen so as to protrude is scooped up from below, pulled up and aligned in the front-rear direction, and the posture of the foliage B1 is adjusted so that it can be easily scraped by the raking device 5,
The foliage B1 of the crop B to be extracted and the foliage B1 of the crop B not to be extracted are planted.

A weeding member 35 corresponding to the shoulder of the ridge A is provided.
Is provided with a weed cover 35B that protrudes outward in the left-right direction. The weed cover 35B almost covers the gauge wheel 3 from above. When it is lifted up by the weeding member 35 and falls down again, it is prevented from stepping on the gauge wheel 3. The scraping device 5 includes an upper driving pulley 36 and a lower driven pulley 37.
And a pair of left and right scraping bodies wound around an endless revolving body 38 indicated by an endless belt. The endless revolving body 38 has a raking claw 40 which is arranged in an inclined manner with a receding angle with respect to the transport direction. At the corresponding rear position.

Then, by circulating and transporting the left and right endless revolving bodies 38 in the Y direction shown in FIG. 3, the raking claw 40 is circulated and transported, and the two-row foliage B1 is lifted from the left and right in a embracing manner.
It is stretched in a straight line and smoothly and reliably inherited (transferred) to the subsequent pull-out / transport device 6. The pulling-out conveyance device 6 is provided with an upper drive pulley 42 and a lower driven pulley 43 on the lower surfaces of a pair of left and right support covers 41 arranged in a downwardly inclined shape. Conveying belts 44 exemplified by rubber belts at 42 and 43
L and 44R are wound around and circulated and transported in the Z direction shown in FIG.

Therefore, the pull-out transporting device 6 is disposed so as to be inclined upward and rearward so as to move upward as it goes backward from the front pull-out start portion (the portion around the driven pulley 43). . With respect to the backward ascending inclination of the pull-out transport device 6, the backward ascending inclination of the scraping device 5 is set to be large. Slightly above, the pull-out start site in the pull-out transport device 6 is arranged close to.

Above and below the right end portion of the drawing and conveying device 6, foliage discharge rotating bodies 45 exemplified by a star wheel are provided so that foliage, which is cutting waste, is dropped between the ridges A. ing. In addition, since the squeezing action portion of the squeezing device 5 is located halfway through the transfer of the pulling and conveying device 6, the long foliage B1 is prevented from falling down during the transfer.

A positioning / conveying device 7 is provided at a lower portion (start end side) of the drawing / conveying device 6 so as to extend rearward.
As shown in FIGS. 4 and 5, the positioning conveyance device 7 includes a pair of left and right conveyance belts 46L, 46R each formed of an endless belt.
And is disposed so as to extend substantially in the horizontal direction toward the rear in the transfer direction from the front succession portion. In the vicinity of the pull-out start portion in the pull-out conveyance device 6, a succession start portion of the positioning and conveyance device 7 is provided. They are located close together.

The left and right conveyor belts 46L, 46R are composed of driving pulleys 47L, 47R, driven pulleys 48L, 38R, tension pulleys 49L, 49R and guide pulley 50.
L and 50R are wound around in the Q direction shown in FIG. 5, and the crop B can be transported backward.
The foliage cutting device 8 can cut the foliage B1 while leaving a predetermined length.

That is, when the foliage B1 extending substantially linearly by the raking device 5 is sandwiched by the left and right transport belts 44L and 44R of the pull-out transport device 6 and transported rearward, the belts 44L and 44R are moved rearward. Because of the upward slope, the two crops B are gradually pulled out from the ridge A.
Then, after the start of the drawing, the left and right conveying belts 46L and 46R of the positioning / conveying device 7 hold the foliage B1 at a position lower than the portion sandwiched by the pulling / conveying device 6, and are conveyed rearward.

At this time, the crop B is lifted by the left and right conveying belts 44L and 44R of the pull-out conveying device 6, and the bulb portion (root portion in the case of root crop) B2 is moved to the left and right conveying belt 46.
When the lower surface side of L, 46R comes into contact, the bulb portion B2 is positioned while being restricted from rising with respect to the positioning and transporting device 7,
After the rising of the bulb portion B2 is regulated, a slip occurs in the portion where the foliage portion B1 is sandwiched by the pulling and conveying device 6, and the crop B is located at a substantially constant height from the upper surface of the ridge A and is moved with the pulling and conveying device 6. It is configured to be conveyed rearward with the foliage B1 stretched between the positioning and conveyance device 7.

Then, the foliage B1 is stretched over the pull-out transporting device 6 and the positioning transporting device 7, and the foliage B1 is cut by the foliage cutting device 8 arranged in the both ends (triangular space) S. After the cutting, the bulb portion B2 is transported backward by the positioning transport device 7, while the upper portion of the cut foliage portion B1 is released to the right by the leaf releasing rotating body 45.

As shown in FIGS. 4 and 5, the foliage cutting device 8 includes a disc-shaped saw-shaped rotary cutter 70. The cutter 70 is disposed substantially horizontally, and is rotatably supported by a support case 69 about a vertical axis. The support case 69 extends along a guide groove 71 of a support plate attached to the body frame 12. Thus, the cutter 70 is supported so that the vertical position can be adjusted in a diagonal direction inclining downward as it goes forward while maintaining the horizontal posture.

The cutter 70 is configured to transmit power from the engine 11 through a power transmission mechanism such as the drive shaft 25 and the wrapping transmission 72. The foliage cutting device 8 has a pair of guide members 73 and 74 supported by the traveling machine body 1A on the upper side and the lower side of the cutter 70. The upper and lower guide members 73 and 74 are formed of a rod-shaped material, a pipe material, a strip plate material, or the like, and are disposed between the pulling-and-holding portion of the foliage B1 by the pulling-out and transporting device 6 and the transporting and holding portion of the positioning / transporting device 7. ing.

The upper and lower guide members 73 and 74 are located substantially parallel to the transport path of the foliage B1 between the transport belts 46R and 46L and on the side opposite to the axis of the cutter 70 in a plan view shown in FIG. , The lower guide member 74 is positioned near the outer periphery of the cutter 70, and the upper guide member 73 projects from the outside of the cutter 70 to the overlap state with respect to the lower guide member 74, and intersects the outer periphery of the cutter 70 at two positions. Let me. That is, the upper and lower ends of the upper guide member 73 are substantially the same in the left-right direction as the lower guide member 74, but the middle portion is closer to the transport path than the lower guide member 74.

In the side view shown in FIG. 4, the lower guide member 74 is arranged substantially along the guide groove 71 and is inclined so as not to contact the cutter 70 whose position is adjusted rearward and upward. The cutter 70 and the pull-out / transportation device 6 are arranged so as not to contact the cutter 70 and the pull-out / transportation device 6 at an intermediate inclination angle between the inclination angle of the pull-out / transportation device 6 and the inclination angle of the lower guide member 74. And, it is substantially along the position adjusting direction of the cutter 70.

Accordingly, the foliage B1 is guided by the upper and lower guide members 73 and 74 in the vicinity of the upper and lower sides of the cutter 70 in a state where the foliage B1 is held between the upper and lower pulling and holding portions and the transporting and holding portion.
In this state, the rotating cutter 70 is pressed and cut, and the receiving part becomes firm, so that the cutting of the foliage B1 is performed normally. The upper and lower guide members 73 and 74 only need to have at least the upper guide member 73.
It is possible to receive the foliage B1 at an interval shorter than the interval from 0 to the upper and lower pulling and holding parts and the conveying and holding part,
In addition, since it projects more toward the cutter 70 than the lower guide member 74, it can be received more strongly.

An aligning and discharging device 9 is provided at the rear portion of the positioning and conveying device 7 so that the cut crop B is aligned on the ridge A and discharged into the ridge A while leaving the foliage B1 that can be caused and bound. ing. The guide roller 50
The contact portions of the transport belts 46L, 46R by L, 50R are set so as to be located in front of the cutter 70 when the cutter 70 is located at the lowermost end. Further, the guide rollers 50L, 50R may be adjustable to move back and forth along the transport belts 46L, 46R.

4 and 5, the aligning / discharging device 9 is disposed at the rear portion of the foliage cutting device 8, is located above the conveying belts 46L, 46R of the positioning conveying device 7, and holds the belts 46L, 46R. Upper guide rod 80 long in the front-rear direction, which is arranged crosswise to the surface (transfer direction)
And two lower guide rods 81 that are located below the conveyor belts 46L and 46R and are arranged crosswise with respect to the upper guide rods 80 and are long in the front-rear direction.

The rear end of the lower guide rod 81 is bent downward, and a guide plate 82 having a vertical plate surface is fixed to one of the lower guide rods 81. A discharge belt 84 having a projection 84A wound around an upper driving pulley 83A and a lower driven pulley 83B is provided at a rear side opposite to the lower bent portion 81A. The discharge belt 84 can be circulated and transferred in the direction of arrow T.

The driven pulley 48 of the conveyor belt 46R
A star wheel 85 is rotatably mounted coaxially with R, and receives the transfer force of the transport belt 46R that transfers in the direction of arrow Q, so that the star wheel 85 is driven in the discharge direction. The aligning and discharging device 9 is configured to remove the bulb portion B2 after cutting the foliage.
While being turned to the left by the lower guide rod 81 and the guide plate 82, and slowly transferred to the right driving wheel while supporting the shortened foliage B1 with the lower bent portion 81A and the projection 84A of the discharge belt 84. The drive wheels 2L and 2R, which drop and discharge onto the ridge A inside the 2A, have blade lugs arranged at equal intervals in the circumferential direction, and a plurality of block lugs (small lugs) are arranged between the blade lugs. The gauge wheel 3 is a wheel wider than the drive wheels 2L and 2R, and a pneumatic tire is mainly used.

The gauge wheel 3 is disposed on the right side of the intermediate position between the subsoiler 10 and the weeding device 4. The gauge wheel device having the gauge wheel 3 has a bifurcated portion at the lower portion and is provided with the gauge wheel 3. A supporting rod 55 for supporting, an outer cylindrical body 56 attached to the body frame 12A of the traveling body 1A and supporting the supporting rod 55 so as to be able to adjust the advance length in a detented state, and supported by the outer cylindrical body 56. A rotating shaft (not shown) for adjusting the extension length (height) of the supporting rod 55 by rotating the supporting rod 55, and transmitting the rotation of the hand handle 53 supported by the traveling body 1A to the rotating shaft. And a transmission shaft 52.

In order to adjust the left and right positions of the outer cylinder 56, a mounting body 59 fixed to the outer cylinder 56 is attached to a bracket 58 fixed to the body frame 12A so that the left and right positions can be freely changed. The bracket 58, the attachment body 59, and the like constitute a left / right position changing attachment means 54 for attaching the gauge wheel device to the traveling machine body 1A so that the left / right position can be changed.

The present invention is not limited to the above embodiment, but can be variously modified. For example,
The cutter 70 is fixed in the vertical direction, and the upper and lower guide members 73 and 74 are substantially horizontal (parallel to the positioning and conveying device 7).
The upper and lower guide members 73 and 74 may be connected to each other.

[0039]

According to the present invention described in detail above, the foliage can be received by the pair of upper and lower guide members at a position closer to the cutter than the pulling and holding portion and the transporting and holding portion, and the catch against the cutter can be received. The foliage can be securely cut without escaping the foliage from the cutter, the cut edges can be aligned, and the foliage is positively pressed against the cutter by extending the upper guide member from the outside of the cutter in an overlapping state. Even if the cutter is provided so as to be adjustable rearward and upward, the upper and lower guide members can be arranged at substantially appropriate positions with respect to the cutter.

Also, the upper guide member can receive the foliage at a position closer to the cutter than the pulling and holding portion, and can positively press the foliage against the cutter.
It can be arranged at a substantially appropriate position with respect to the cutter, the foliage can be reliably cut without escaping from the cutter, and the cut edges can be aligned.

[Brief description of the drawings]

FIG. 1 is an overall plan view showing a harvester.

FIG. 2 is an overall side view of the same.

FIG. 3 is an overall front view of the same.

FIG. 4 is a schematic side view showing a main part of the embodiment of the present invention.

FIG. 5 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Harvester 1A Traveling body 6 Pull-out conveyance apparatus 7 Positioning conveyance apparatus 8 Foliage cutting apparatus 70 Cutter 71 Guide groove 73 Upper guide member 74 Lower guide member 12 Body frame A ridge B crop B1 foliage part

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroyuki Chiba 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works (72) Inventor Takao Sakatsuji 64 Ishizukita-cho, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. F term in the factory (reference) 2B072 AA03 BA02 BA04 BA14 BA26 BA28 BA30 CA12 CA20 DA02 DA05 DA12 DA18 DA19 EA01 GA00

Claims (4)

[Claims] 1. A foliage portion of a crop excavated from a ridge is pinched by a pulling and conveying device and then conveyed upward, and a foliage portion below a pulling and clamping portion is pinched and conveyed backward by a positioning and conveying device. In the middle of the transfer, in a foliage cutting device of a harvester that cuts foliage with a cutter between a pulling and holding portion of the pulling and conveying device and a transfer and holding portion of the positioning and transporting device, A foliage cutting device for a harvester, wherein a pair of guide members for guiding and receiving a foliage portion against the cutter are provided on the upper side and the lower side of the cutter between the holding portions. 2. The foliage cutting device for a harvester according to claim 1, wherein the upper guide member projects from the outside of the cutter in an overlapping state and intersects the outer periphery of the cutter at two positions. . 3. The cutter is provided so that its position can be adjusted rearward and upward, the lower guide member is positioned near the outer periphery of the cutter, the upper and lower guide members are arranged substantially in parallel, and substantially along the direction of adjusting the position of the cutter. 3. The method according to claim 1, wherein
2. The foliage cutting device of the harvester according to 4. 4. A foliage portion of a crop dug out of a ridge is gripped by a pulling and conveying device and conveyed upward and at the same time, a foliage portion below the pulling and clamping portion is pinched and conveyed rearward by a positioning and conveying device. In the middle of the transfer, in a foliage cutting device of a harvester that cuts foliage with a cutter between a pulling and holding portion by a pulling and conveying device and a conveying and holding portion of a positioning and conveying device, A guide member is provided above the cutter between the pull-out holding portion and the transport holding portion and substantially along the direction of adjusting the position of the cutter to guide while receiving the foliage against the cutter. A flute cutting device for a harvesting machine, which projects from the outside of the cutter in an overlapping state and intersects the outer periphery of the cutter at two positions.