JPH07102027B2 - Harvesting machine for ginger etc. - Google Patents

Description

TECHNICAL FIELD The present invention relates to a harvester for pulling and harvesting crops such as ginger from a field.

(Prior Art) As a technique for harvesting a crop vegetated in a field, for example, there is a technique disclosed in Japanese Patent Laid-Open No. 60-137207.

In this conventional technique 1, a pulling device including a pulling belt having a rearwardly inclined slope is provided on one side of the traveling machine body, and the stems and leaves of the bulb vegetables are sandwiched between the pulling device and the pulling device, and the pulling device is fed to the upper rear side. The cutting blade was provided to cut the foliage.

Also, as a harvesting machine for ginger, onions, etc.
There is a technique disclosed in Japanese Patent No. 3021.

This prior art 2 is provided with a pulling conveyor that holds the foliage part and pulls it upward, and a foliage cutting cutter is provided on the upper part of the conveyor and a foliage discharging chute is provided at the rear part of the cutter. there were.

(Problem to be Solved by the Invention) 1 of the prior art is that the cutting blade provided in the latter half of the conveyance is a rotary type equipped with a pair of left and right belts, and does not utilize the belt conveyance force, so that the cutting is defective or defective. Was invited (problem).

Further, in the conventional technique 1, the pair of left and right belts may open, so that accurate pinching and conveying cannot be expected (problem).

Furthermore, in the related art 1, the drawing device is provided on one side of the traveling machine body, and the machine body itself becomes large (problem).

The prior art 2 is equipped with a cutter in the first half of the conveyance and cuts in a state of being sandwiched by a pull-out belt. Therefore, foliage is entangled in a dense area. The delivery condition was clearly broken, and uniform delivery could not be expected (problem).

Further, in the prior art 2, since the cutter is located on the center line of the drawing belt and the cutting is performed at this position, the cut foliage (hereinafter abbreviated as stem) falls on the drawing belt. However, it was difficult to discharge outward even if a discharge chute was provided. Moreover, since the discharge chute has a tubular shape, the cutting stem is clogged in the cylinder and stays, which causes excessive consumption power and makes continuous harvesting work difficult (problem).

Further, the conventional example 2 has the above-mentioned problems, and further,
Both the conventional examples 1 and 2 have a common problem that maintenance is difficult.

In view of the above-mentioned problems of the prior art, the present invention reliably cuts the stalks of crops by using the conveying force of the pair of left and right pulling belts, and further prevents the opening of the belt from decreasing due to cutting or the like. The purpose is to have done.

Further, the present invention provides cutting tools on the pulling start end side and the rear half of the pulling device, and at the start end side, above the belt,
The purpose of the latter half is to cut the stems below the belt so that the bulbs and the like can be gathered between the traveling devices and the cut stems can be gathered laterally.

Further, it is an object of the present invention to secure safety even if a cutting tool is provided and to facilitate maintenance.

(Means for Solving the Problem) According to the present invention, a pulling device 3 including a pair of left and right traveling devices 2 and a pair of left and right pulling clamps 3A and 3B for pulling the crop S such as ginger while pulling it while conveying it backward. In order to achieve the above-mentioned object in a harvester such as ginger provided with cutting tools 83, 129, 130 for cutting the stem of the crop S and a steering handle 41,
The following technical measures are taken.

First of all, according to the present invention, the cutting tools 129, 130 are provided on the lower surface side of the pulling device 3 for cutting in the latter half of the feeding direction of the pulling device 3 and in a state in which the stem portion of the pulled out crop S is sandwiched between the pulling and sandwiching bodies 3A, 3B. The cutting tools 129, 130 connect the pair of left and right frames 51 supported by the pair of left and right extraction sandwiching bodies 3A, 3B to each other, and the straight blades 129A, 130A of the pair of left and right cutting tools 129, 130.
Is formed in a V-shape that is tapered in the conveying direction, and is attached so as to have an intersection on the extraction center line.

Secondly, the present invention is characterized in that a cutting tool 83 for cutting the stalks of the scraped crop S on the upper surface side of the pulling clamps 3A, 3B is provided on the starting end side of the pulling device 3. is there.

Thirdly, the present invention is characterized in that a mouth opening preventive tool 131 that connects a pair of left and right frames 51 to each other is provided near the rear part of the cutting tools 129 and 130.

In the fourth aspect of the present invention, the pair of left and right extraction sandwiching bodies 3A and 3B are respectively supported by the pair of left and right frames 51 via the rotation guides 45, 46 and 47, and the pair of left and right rotation guides 45, 46 and 47 are It is characterized in that its axis is inclined so as to open upward.

Fifthly, according to the present invention, the scraping wheel 1 is provided at the conveyance end of one of the pair of left and right pull-out sandwiching bodies 3A and 3B in the pull-out device 3.
20, 121 are provided, and a chute 123 for supporting the cut stem of the crop S sandwiched by the pull-out sandwiching bodies 3A, 3B and discharging it laterally is provided below the wheels 120, 121.

Sixth, the present invention is characterized in that, when the front portion of the harvester is lifted, the steering handle 41 and the traveling device 2 serve as a stand for maintaining the lifting posture.

(Operation) According to the first aspect of the present invention, the pair of left and right pull-out sandwiching bodies 3A, 3B are provided.
At the time of cutting with the cutting tools 129 and 130, the stem portion of the crop S clamped by is sharply cut by using the conveying force of the pulling clamp and is cut at the lower surface of the conveyer, so that the weight of the bulb of the crop S also acts. And make a good cut.

Further, the opening and closing of the left and right holding bodies 3A and 3B due to the cutting resistance is prevented because the frame 51 is connected to the cutting tools 129 and 130.

In addition, since the straight blades 129A, 130A of the cutting tools 129, 130 are formed in a V-shape that is tapered in the conveying direction, and are attached so as to have an intersection on the drawing center line, a fibrous and hard stem is cut. The aircraft does not swing to the left or right due to the reaction force (cutting resistance) when it does.

According to the second aspect of the present invention, the stems and leaves on the upper surface side of the pulling clamps 3A and 3B are cut by the cutting tool 83 at the start end side of the pulling device 3, and the stems and stems on the lower surface side of the pulling clamps 3A and 3B at the rear end side. Cutting tool 1
It cuts at 29,130, and even if long crops are cut here, even if rotary cultivation is performed as a subsequent work, entanglement with nails is prevented.

According to the third aspect of the present invention, the mouth opening prevention tool 131 reliably prevents the pulling-out sandwiching bodies 3A and 3B from being opened by the cutting resistance and the pulling-out force by the cutting portions 129 and 130.

According to the fourth aspect of the present invention, even if the upper surface side becomes narrower and the lower surface side expands due to the reaction force of the pulling force of the pull-out sandwiching bodies 3A and 3B, the pull-out sandwiching bodies 3A and 3B reduce the clamping force of the stem portion. It doesn't invite, and it doesn't come off.

According to the fifth aspect of the present invention, the bulbs and the like of the crop S are dropped between the traveling devices 2 and the cut stalks are discharged laterally to facilitate the subsequent handling.

According to the sixth aspect of the invention, the cutting tools 129 and 130 are provided on the lower surface of the conveyance to ensure safety, but the maintenance thereof is facilitated.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIGS. 1 and 2 exemplify a harvester for ginger as the crop S. The harvester includes a machine body 1 and a pair of left and right traveling devices that support the machine body 1 substantially parallel to a field. Two
And a pulling-out device 3 including a pair of left and right pulling-out sandwiching bodies (hereinafter referred to as pulling-out belts or belts) 3A and 3B that pull out the crop S while conveying it backward.

A prime mover 6 including an engine 4, a mission device 5 and the like is mounted on the upper portion of the machine body 1, and a space portion 7 penetrating in the front-rear direction is formed in the abdomen of the machine body 1 and the space portion 7 is formed. The pulling-out device 3 is housed in a substantially central portion in the vertical direction (substantially downward) with the transport direction in the front-back direction.

The traveling device 2 includes auxiliary wheels 8 arranged in front of the traveling device 2, and the engine 4 is covered with a hood 9.
It is covered with a fuel tank 9A on the mission device 5,
The withdrawal belts 3A and 3B are covered with a belt cover 10,
The center of gravity position G of the entire machine body 1 is set near the drive unit of the traveling device 2.

The body 1 is provided with a pair of left and right main frames 11 each having a triangular shape in a side view and having windows 11A so that the working state by the pair of pull-out belts 3A and 3B can be confirmed. The main frame 11 has a hollow inside. It also serves as a chain case (transmission case).

Inside the main frame 11, the drive sprocket 13 of the drive shaft 12 is arranged at the top of the main frame 11, the driven sprockets 16 and 17 of the axles 14 and 15 are arranged at the respective tops of the front and rear, and the respective sprockets 13, 16 and Wrapped transmission 18 shown as a chain across 17
Is wrapped around.

A pedestal 19 of the drive means 6 is provided on the upper top between the pair of left and right main frames 11, and the engine 4 is arranged in the front part and the mission device 5 is arranged in the rear part on the pedestal 19, respectively. A belt 22 is wound around a pulley 20 on the output shaft and a pulley 21 on the input shaft of the mission device 5, and the bonnet 9 covering the engine 4 is openable and closable around a fulcrum shaft 23 at the front thereof. , The closing position is secured with the stopper 24,
This facilitates maintenance of auxiliary devices of the engine 4, such as plugs and carburetors.

The front part of the gantry 19 has an arch shape in a front and rear view, and is provided with a front frame 25 that inclines in a front downward direction, and an arch shape having a pair of left and right columns on the left and right rear parts of the gantry 19. The rear frame 26 is laid down, and this rear frame
The lower part of 26 is connected to the left and right frames 27 of the pulling-out device 3, and the left and right frames 27 are in the shape of a center pillar box extending in the front-rear direction.
The main frame 11, the gantry 19, the front frame 25, the rear frame 26, and the left and right frames 27 are connected to the lower end side of the airframe 1 to form the airframe 1.

The traveling device 2 supports the machine body 1 so as to be substantially parallel to the field.
It is a two-axle four-wheel type equipped with front wheels 28 and rear wheels 29, with the front wheels 28 on the front top axle 14 and the rear wheels 29 on the rear top axle 15 respectively.
Installed on the outside of 11.

The drive shaft 12 is supported by a bearing case 21 ′ that protrudes inward from the top of the main frame 11 and is interlocked with a transmission shaft in the mission device 5 via a steering clutch.

With respect to the pair of left and right main frames 11 in the machine body 1, the drive means 6 and the pulling-out device 3 are swingably suspended around a drive shaft 12 at the top of the main frame 11 as a fulcrum, as shown by an arrow A in FIG. As a result, the withdrawal height position can be freely adjusted.Therefore, the pair of left and right front and rear legs of the main frame 11 and the left and right frames 27 are connected to each other by the connecting means 30 shown in FIGS. 12 to 15. Are connected by.

That is, the connecting means 30 attaches the bracket 31 having the arc-shaped mounting hole 31A having the drive shaft 12 as a fulcrum to the left and right frames 27.
Of the front and rear legs 11B and 11C of the main frame 11, and the mounting bolts 32 provided to the front and rear legs 11B and 11C are inserted into the mounting holes 31A and fastened with nuts 33. Therefore, by loosening the fastening of the nut 33, the swinging of the arrow A is allowed, and after the adjustment, the nut 33 is tightened to hold the adjusted position fixed.

A pair of auxiliary wheels 8 are arranged on the left and right in front of each traveling device 2, and each auxiliary wheel 8 is rotatably supported by a lower end of a bell crank-shaped swing arm 34 via a support shaft 35 and swings. The moving arm 34 is attached to the front frame 25 by a support shaft 35 so as to move up and down between a descending position D in which the auxiliary wheels 8 support the vehicle 1 together with the traveling device 2 substantially in parallel with the field, and an ascending position U above this. Installed.

Further, the swing frame 34 is interlockingly connected to an operation lever 37 via a rod 36 having a turnbuckle structure connected thereto, and can be operated up and down by the operation lever 37.

The operation lever 37 is fixed to both ends of a connecting shaft 38 that is rotatable around an axis extending over the upper portions of the left and right main frames 11, and the other end of the rod 36 is provided in the middle of the operation lever 37. It is pivotally supported and can be operated up and down.
There are a pair of left and right 37, rods 36, etc., and the auxiliary wheel 8 can be operated to the lowered position D and the raised position U by moving one of the operating levers 37 up and down.

The swing arm 34 has a stopper 38 ', which is capable of abutting against the rear portion of the front frame 25, where the auxiliary wheel 8 encounters an obstacle or the like and the impact thereof. Does not cause the bending of the rod 36, and 39 indicates a spring for pulling up.

The distance between the front and rear wheels 28, 29 and the distance between the auxiliary wheel 8 and the front wheel 28 are larger than the groove width W of the groove 40 between the ridges in the field.

A pair of left and right handles 41 is attached to the upper end of the rear frame 26 so as to project rearward, and each handle 41 is provided with a working clutch lever 42 and a main clutch lever 43. Incidentally, 44 is a forward / reverse switching lever.

There are a pair of left and right belt covers 10 corresponding to the pair of left and right pull-out belts 3A and 3B, and each belt cover 10 is attached to a pair of left and right frames 27 with bolts or the like.

The pull-out belts 3A and 3B are crops S such as ginger vegetated in the field.
The left and right pull-out belts 3A and 3B are for pulling out from the field while transporting the stem rod of the
Is made of elastic material such as JISA shore hardness of 50-60 °, such as rubber, and is wound around the driven pool 45 at the front end and the drive pulley 46 at the rear, and a large number of crop rods of the crop S are sandwiched from the left and right. It is guided by a guide pulley 47, and is provided so as to be tilted slightly upward as a whole so as to be rotatable.

As shown in FIG. 8, each pull-out belt 3A, 3B has three engaging projections 48 on the inner peripheral surface of the belt body, and two projections 49 on the outer peripheral surface at positions vertically displaced from the center. Each of the engaging projections 48 is fitted into the circumferential groove of a rotation guide body (hereinafter referred to as a pulley) 45, 46, 47 exemplified by a pulley, and the projections 49, 50 on the outer circumference are provided. Are adapted to engage with each other with a slight gap therebetween at the opposing portions of the pair of pull-out belts 3A and 3B, that is, the crop sandwiching portions.

The engaging projections 48 and the projections 49, 50 of both the pull-out belts 3A, 3B are
The mountain-shaped member integrally formed or separately formed on the belt body is formed by baking a V-belt on a flat belt,
It suffices that each of the pull-out belts 3A has a plurality of one or more, and the positional relationship between the engaging protrusions 48 and the protruding portions 49 in the pull-out belt 3A is the same as those of the pull-out belt 3B. The pull-out belt 3B is formed in the same shape, and is vertically wound around the pull-out belt 3A.

The crop S sandwiched between the pull-out belts 3A and 3B is folded in a zigzag shape as shown in FIGS. 8 and 9 due to the elastic deformation of the ridges 49 and 50 engaging with each other and the presence of the gap. The music is pinched and receives a cooperative pulling force by the rearward movement of the pulling belts 3A, 3B.

Therefore, when the guide pulley 47 is rotatably provided on the U-shaped support frame (belt frame) 51 by the pin shaft 52, the upper surface side is narrowed as shown by the arrow B in FIG. 8 due to the reaction of the pulling force F. In order to prevent the pull-out belts 3A, 3B from coming off even if the pin shafts 52 are moved to, the pin shafts 52 are inclined so that the axial center intervals of the pin shafts 52 are wide on the upper side and narrow on the lower side, as shown in FIGS. ing. Further, the guide pulleys 47 are arranged in a zigzag manner as shown in FIG. 7, and when the stalks S are clamped by the pull-out belts 3A, 3B, the guide pulleys 47 facilitate a wavy elastic deformation.

The driven pulley 45 is attached to a driven shaft 54 provided at the front end through a tension adjusting mechanism 53, and the driven shaft 54 has a pair of left and right pull-out belts 3A and 3B on the upper side of the crop rod of the crop.
A pair of left and right scraping wheels 55, 56, 57, 58 for scraping in between
A scraping device 61 having 59, 60 is provided.

As shown in FIG. 2 and FIG. 3, the scraping device 61 uses bolts 63, 64 to mount the scraping wheels 55, 58 on the left and right driven pulleys 45 via cylindrical bodies 62A, 62B having different heights. The vertical shafts 67 and 68 are fitted into the boss portions 65 and 66 of the mounting and scraping wheels 55 and 58, and are detachably provided with the stop bolts 69 and 70, and the scraping wheels 56 are attached to the vertical shafts 67 and 68. , 57, 59, 60 are attached with stop bolts 71, 72, 73, 74, and each of the scraping wheels 55 to 60 is provided with a space in the height direction, and The wheels are offset in the height direction.

Therefore, the stick S of the lower scraping wheels 55, 58, the scraping pawls of the interrupting scraping wheels 56, 59 and the scraping pawls of the upper scraping wheels 57, 58 are used to move the stem S of FIG. By the rotation shown by arrow C, it is possible to sequentially scrape toward the starting end of the pulling belt of the pulling device.

Here, the left and right claws of the wheels that are opposed to each other are displaced in the height direction to prevent the stem S from being compressed and broken during scraping, and thus the stem S Make sure to disconnect.

Of the wheels 55 to 60, each of the wheels 55, 58, 57, 60 is made of hard synthetic resin and has a sprocket shape, and the wheels 56, 58 are made of metal and have a sprocket shape.

Incidentally, 75 and 76 are dint color collars, which maintain the vertical distance between the wheels and prevent the crops and the like from being entangled with the shafts 67 and 68 due to the rotation of the shafts 67 and 68. It is loosely fitted to 68.

As shown in FIG. 4, a mounting frame is provided on the front side of the machine body 1.
77 is attached by a connecting shaft 78, and the connecting shaft 78 is
The boss 79 on the side of the machine body 1 and the boss 80 on the side of the mounting frame 77 can be freely inserted and removed, and can be freely attached and detached by stop bolts 81 and 82, respectively.

The mounting frame 77 is substantially V-shaped in a plan view, and a cutting tool 83 and a scraping wheel 55 to the mounting frame 77.
Vertical axes 67 and 68 having 60 are provided, and the vertical axes 67 and 68 are supported by bearings 84 and 85 at the tip of the mounting frame 77.

The mounting frame 77 has a guide portion 86, which guides the stalks scraped by the scraping device to the gripping start ends of the pull-out belts 3A, 3B.
Has 87.

The cutting tool 83 is a disk cutter, and is arranged so as to be displaced to the right side from the drawing center line L-L in the embodiment, and has a cutting edge 83A on the outer circumference of the disk.

As shown in FIG. 19, the cutting tool 83 has a supporting shaft 89 which is erected on an arm 88 of a mounting frame 77 and which is rotatably mounted on the supporting shaft 89 via a bearing device 90, and is shown by a coil spring. A resistance applying device 91 is provided.

Therefore, the cutting tool 83 is adapted to rotate only after overcoming the resistance applying device 91. In addition, 92 in FIG. 19 is a support shaft 89.
3 shows a labyrinth means for preventing foreign matter from entering the device.

The cutting portion 93 of the cutting tool 83 is located before the withdrawal start ends 94 of the withdrawal belts 3A and 3B, and the stalk S is cut before sandwiching the withdrawal belt stalk there.

The cutting portion 93 includes the cutting edge 83A of the cutting tool 83 and the scraping wheel 56.
It is composed of the occlusal portion of the nail 56A of the
Is located slightly below the gantry 19 and above the starting end of the drawing device 3.

The claw 56A of the wheel 56 is adapted to push the stem S into the cutting portion 93, and the upper surface of the claw 56A is brought into sliding contact with the lower surface of the outer periphery of the cutting tool 83.

Therefore, the stem S that has been scraped and pushed by the wheel 56
Is cut in cooperation with the cutting edge 83A of the cutting tool 83, and when this cutting resistance is larger than that of the resistance imparting device 91, the cutting tool 83
Is driven to rotate, and the rotation of the wheel 56 enables the cutting stem to be discharged while supporting it on the right side in the figure.

Here, 56A of the wheel 56 has a cutting edge 8 formed by forming a portion 56B in which the outer peripheral portion is bent downward as shown in FIG.
Smooth sliding contact with 3A.

In addition, the portion of the arm 88 corresponding to the cut portion 93 has a fourth
By forming the cutout portion 94 as shown in the figure, the lower part is opened up to the cutting completion point of the stem to facilitate the invasion of the crop (stem) into the cutting portion 93 and to enable complete cutting.

Reference numeral 95 denotes a stalk guide device, which is a bottom plate 96 that covers the upper surface of the cutting tool 83.
Is fixed to the mounting frame 77 via a stay 97, and a first guide plate 98 which is located between the scraping wheels 59 and 60 and covers the vertical axis 68 is erected on the bottom plate 96. The shape of the first guide plate 98 is retained, and the left front portion of the first guide plate 98 is at the foremost end as a curved portion 98A, and is inclined rearward to the right of this portion. It has a guide portion 98B and extends toward the cutting portion 93, and the scraping wheels 58-60.
Is exposed from the curved portion 98A, and the scraping wheels 55 to 5
The outer peripheral edge of 7 is wrapped with the guide portion 98B in a plan view, and the stalk that has been scraped by the scraping device is squeezed and guided here to the right.

A second guide plate 99 is arranged above the first guide plate 98 and above the wheel 60, and the second guide plate 99 has a curved portion 99A having substantially the same shape as the first guide plate 98 in a plan view. It has a guide portion 99B and is attached by a stay 100.

A third guide plate 101, which is substantially oval in plan view and surrounds the outer periphery of the vertical axis 67, is provided between the wheels 56 and 57 of the scraping device.
Is attached by a stay 102 protruding outward from the front end of and a stay 103 standing upright from this stay,
Here, with the curved portions 98A, 99A of the first and second guide plates 98, 99 and the curved portion 101A of the third guide plate 101, the first guide passage 102 'having a tapering start end opening to the front and a rear taper is formed. Form and cut part 93
The second guide passage 103 ′ is bent toward the outer side of the cut portion 93 to form an outwardly expanded second guide passage 103 ′.
At the bottom of 03 ', a discharge chute 104 is attached to the attachment frame 77 as a downward slope by bolts 105 (see FIG. 19).

In the second guide passage 103 ′, the second guide plate 98 is located rearward of the first guide plate 97 in a plan view, and the foot roller portion 106 is formed there. In the foot roller portion 106, The upper part of the second guide plate 99 is a pushing part 99 bent forward.
It has C (see Fig. 24).

This is the pushing section 99C while capturing the cut stem with the roller 106.
This secures the bite 57 to the nail and facilitates the discharge of the cut stem through the discharge chute 104.

A fourth guide plate 107 having the same planar shape as the third guide plate is attached to the stay 103 on the wheel 57,
The fourth guide plate 107 prevents the claws of the wheel 57 from scratching the cutting stem forward, and promotes the discharge through the discharge chute 104.

Here, the stem cut at the cutting portion is supported by the rotation of the wheel 56 and the cutting tool 83 while being guided by the second guide passage 103 'and discharged to the front outside of the right front wheel by the discharge chute 104. To be done.

Here, the scraping wheels 55 to 60 in the scraping device
Are phase-shifted in the height direction, and wheels 55 to 57 on the stem discharge side are set at positions higher than the other wheels 58 to 60 corresponding to these wheels.

Since the wheels 57 to 60 are all exposed to the front of the guide plate, the claws of these wheels have no cutting edges, ensuring safety.

Reference numeral 108 denotes a pair of left and right dividers, which are formed by bending a bar material into a triangular shape in a side view.
The upper ends of the left and right bosses 109 are detachably attached, and the lower ends of the left and right bosses 109 are detachably attached to the bosses 110 of the left and right frames, and they are fixed with set screws 111.

Here, the cutting tool, the raking device, and the stalk guide device 95 are unitized as shown in FIG. 18, and the wheels 55 and 58 of the lower stage of the raking device are left detachable by the unit.

To attach and detach this unit, pull out the connecting shaft 78 to release the connection between the machine body 1 and the mounting frame 77, and set the bolts 6 on the vertical axes 67 and 68.
By removing 9,70 and the set screw 11 of the divider, they are removed as shown in FIG. 18, and the installation is performed in the reverse procedure.

As described above, by removing the unit 112 including the cutting tool 83, it is easy to load the harvester on the wagon and the like, which is advantageous for the storage space, and depending on the crop, the height of the vegetation may be increased. Some are low, to accommodate the pulling harvest of this low crop.

As shown in FIG. 16, the tension mechanism 53 is configured by attaching a tension arm 114 to a cylinder body 113 with a tension spring, an adjusting bolt, and the like (not shown), and adjusting the tension of the pull-out belt through a driven pulley. As shown in FIGS. 20 and 21, a scraper tool 115 for a pulley groove in a driven pulley is attached to the arm 114.

The left and right scraping wheels 55 to 60 have mountain-shaped claw portions on the outer circumference at equal intervals in the circumferential direction in order to scrape the stems of the vegetated crop S between the pull-out belts 3A and 3B. It has a sprocket shape and is larger than the driven pulley.
The peripheral speed is higher than the peripheral speed of the pulley and the moving speed of the pull-out belts 3A and 3B. The left and right scraping wheels 55 to 60 rotate synchronously, and the loci of rotation of the left and right claws overlap, but they do not abut like gears, they are in an occlusal state with a gap, and the stem is inserted in the gap. It is configured to feed backward while sandwiching.

The drive pulley 46 is arranged near the rear wheel and
As shown in FIGS. 5, 5 and 6, the output shafts of the mission device are attached to the lower ends of vertical transmission shafts 116, 117 which are interlocked with each other via bevel gear mechanisms.
Cylinder collars 118 and 119 are loosely fitted in the 17.

Therefore, when the drive pulley 46 rotates in the direction D shown in FIG. 5, the pull-out belts 3A and 3B are circulated in the direction E shown in FIG.

Of the transmission shafts 116, 117, the upper and lower two-stage scraping wheels 120, 121 are attached to the left transmission shaft 116, and the wheels 120, 121 have a substantially sprocket shape. The position is close to the clamping surface (pull-out center line).

The upper and lower scraping wheels 120 and 121 have the same shape and are made of sheet metal, and a guide member 122 made of a wire whose one end is connected to the rear frame is provided above the foil 120.

The guide member 122 is wrapped around the claw bottoms of the scraping wheels 120 and 121 in a plan view, and the latter half thereof extends outward in the direction orthogonal to the working direction and ends near the inside of the main frame 11 of the rear wheel. There is.

Reference numeral 123 denotes a scraping chute that discharges the cut stem inside the rear wheel together with the scraping wheels 120, 121, the guide member 122, and the guide plate 124.
A substantially L-shaped stay 125 is attached to the frame of 3A in plan view, and is attached to the stay 125 with bolts 126.

The scraping chute 123 has a narrow gap between the upper edge surface of the scraping chute 123 and the lower surface of the pull-out belt 3A and extends a little right side of the pull-out center line in parallel with the straight line portion 123A, and its front end portion is As shown in FIG. 1, a rearward downward inclined portion 123B is formed, and a portion rearward of the end portions 125 of the pull-out belts 3A, 3B is formed as a guide portion 123C inclined so as to guide the cutting stem to the left. There is.

The guide plate 124 is mounted on the belt cover 10 of the right pulling belt 3A, and is guided rearward from the terminal end 125 to the guide member 122.
At the same time, the scraping passage 126 is configured to bend to the left, and is made of an elastically deformable plate material.

A rear cutting rear portion 127 is provided on the lower surface of the support frame 51, slightly in front of the front end of the guide plate 124.

This rear cutting device 127 is, as shown in FIGS. 7 and 8,
Straight nuts 129A and 130A with nut 128 using pin shaft 52
A pair of flat plate cutting tools 129, 130 having a linear blade 129A, 13
It is detachably attached so that 0A has a scissor shape,
The straight blades 129A and 130A intersect each other on the way, and this intersection is located on the extraction center line.

That is, the straight blades 129A, 130A of the pair of left and right cutting tools 129, 130
As shown in FIG.
It is shaped like a letter and has an intersection at the extraction center line.

Therefore, in the process of cutting the middle part of the foliage with the above-described cutting tool 83 and carrying the stem having the bulb portion backward while being pulled out by the pulling belts 3A, 3B, the straight blade 129 of the cutting device 127.
The bulb portion that has been shredded again by A and 130A and pulled out is dropped, and the stem sandwiched by the pulling belts 3A and 3B is discharged to the left via the guide plate 124 and the like.

Here, the bulb portion is sequentially dropped in the field between the traveling devices, and the cut stem is first dispersedly discharged to the right side in the upper part and to the left side in the middle part.

The pulling belts 3A and 3B cause a so-called mouth opening phenomenon in the expanding direction due to cutting resistance of the flat cutting tools 129 and 130, but in order to prevent this, a pair of left and right support frames are provided at the rear of the cutting tools 129 and 130. 51 Opening prevention 131 and fasteners 132
Are connected to each other by.

The flat cutting tools 129, 130 are pivotally supported at their overlapping portions by pivot pins 133 and the like, and are detachable by a nut 128, and the blade portion is in the blade edge longitudinal direction as shown in FIG. 25. Groove 12
Those with 9B are preferred.

As shown in FIG. 16 and FIG. 17, this harvester has the front end raised, and the rear wheel 29 and the handle 41 have a stand function.
It is designed to be between the rear wheel 29 and the handle 41.

In this way, by making the rear wheel 29 and the handle 41 stand, maintenance of the tension mechanism 53, the rear cutting device 127 and the like is facilitated.

10 and 11 show the chain tension mechanism 13 in the main frame 11.
4 shows a tension mechanism 134 in which a U-shaped bracket 135 is swingably mounted in the main frame 11 around a fastener 136 as a fulcrum, and a guide roller 137 that comes into contact with a chain is mounted on the fastener 136. While being rotatably fitted, a tension guide roller 138 is provided above the guide roller 137, and the bracket 135 is swingably adjusted by a tension bolt 139. The notch 140 is for avoiding interference between the inner end of the main frame and the bracket 135.

FIG. 22 shows another example of the front cutting device, which is a cutting tool.
The axis of 83 is not vertical but the cutting start side is opened and adjusted so that the cutting tool 83 and the wheel are brought into sliding contact with each other on the cutting end side, whereby the claws of the wheel smoothly cut.
Introduced in 83.

The belt cover 10 prevents the leaves and stems from being trapped on the inner peripheral sides of the pull-out belts 3A and 3B and causing the winding.

In the above embodiment, when the crop S such as ginger is pulled out, it is run on the low floor ridge in the orthogonal direction. That is, when traveling forward while driving each part, as shown in FIG. 11, the pair of left and right scraping wheels 55 to 60 scrape the upper part of the stalk of the crop rearward, and the pair of left and right pull-out belts 3A on the rear side. Since it is fed between 3B, the pair of pull-out belts 3A and 3B sandwich the stem rod of the crop from both left and right sides.

Before the stalk is sandwiched, the stalk is cut at a position slightly lower than the pedestal 19 by the action of the cutting tool 83 and the scraping wheel 56, and the cut stalk is discharged to the right outside.

The bulb-shaped stem, whose middle portion is cut, is relatively fed to the pulling-out starting end by the guide portion of the mounting frame 88.

Then, the pulling / extracting device 3 pulls the crop upward while conveying the crop relatively backward at a speed synchronized with the traveling device 2.

That is, the crop S, which is vegetated in an upright state and whose upper part is cut off, tears down the bulb of the bulb from the front half of the pulling device 3, that is, between the auxiliary wheel 8 and the front wheel 28, and the bulb near the center of gravity G. To the SA, and after completely pulling out the crop bulb SA in this way, the cutting device 1 at the rear end of the pull-out belts 3A, 3B 1
At 27, cut the stem further and scrape the stem to the left rearward with the scraping wheel.

When the unit including the cutting device is removed as shown in FIG. 18, the long stalk that does not cut the stalk is the front frame,
Since it hits the frame or the like and is subjected to the conveying force, it is bent and the rear cutting device is cut.

The center of gravity G of the machine body 1 and the like is near the front wheel 28, and a large pulling force is required in the vicinity thereof, but this pulling force is reliably supported by the traveling device 2 in relation to the center of gravity G.

Further, since the main frame 11 has the window 11A whose inside can be visually recognized in a side view, it is possible to confirm the working condition during conveyance from the outside.

When traveling on a low floor ridge in the orthogonal direction, the front wheels of the traveling device 2
28, the rear wheel 29, and the auxiliary wheel 8 in front of the rear wheel 29 hold the machine body 1 in a fixed posture substantially parallel to the field. That is, the front and rear wheels 28,2
When 9 is on the ridge, the front and rear wheels 28, 29 support the airframe 1 even if the auxiliary wheel 8 is on the groove, and when the front wheel 28 is on the groove, the auxiliary wheel 8 and the rear wheel 29 support the airframe 1. And then the rear wheels
When 29 is in the groove, the auxiliary wheel 8 and the front wheel 28 support the airframe 1. Therefore, the machine body 1 can be supported substantially parallel to the field regardless of the presence or absence of the groove.

Further, since the center of gravity G of the entire machine body 1 is near the upper portion of the front wheel 28, it is sufficient to lightly lift the handle 41 and support the operator lightly.

(Effects of the Invention) The present invention is as described above, and the cutting tool provided in the latter half of the pulling device in the transport direction is provided on the transport lower surface side with the belt of the pulled crop stalk, The stem can be pulled down and cut with the weight of the bulbs of the crop, and the cutting is reliable, and safety can be secured.

Further, since the cutting tool is cut by using the belt conveying force, the cutting is sharp, and since the cutting tool connects the pair of left and right belt frames, the opening due to the pulling force is eliminated. It can be securely clamped and conveyed to cut.

Since the straight blades of the pair of cutting tools on the left and right sides are formed in a V-shape that is tapered toward the transport direction and have a crossing portion at the pulling center line, they are attached to cut a very hard stem that is fibrous. The resistance (reaction force) at that time surely prevents the aircraft from swinging left and right.

Further, since the cutting tool is provided at each of the starting end and the rear half of the conveying device of the pulling device, the stem can be shredded even in a long crop, and the entanglement with the nail can be reduced during rotary tillage after harvesting. .

Further, since a mouth opening prevention tool is provided in the vicinity of the rear part of the cutting tool in addition to the rear cutting tool, insufficient belt separation is eliminated, and the belt can be reliably clamped and cut, and a sufficient pulling force can be secured. .

Further, since the pulley supporting the belt has its axial center opened upward, even if the upper surface of the belt is narrowed by the pulling reaction force, the belt can be prevented from coming off.

Further, a scraping wheel is provided at one end of the belt of the pulling device, and a chute is provided below this, so that the bulbs of the crop or the like are dropped between the traveling devices, and the cut stems are discharged to the side,
Here, the bulbs and stems are dispersed and in the field,
Subsequent work can be facilitated.

Furthermore, maintenance of the lower surface (bottom surface) of the pulling device of the harvester and the like can be facilitated by making the handle and the rear wheel stand.

[Brief description of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall side view,
FIG. 2 is a plan view of the same, FIG. 3 is an elevation sectional view in front view,
4 is a plan view showing a scraping device and a cutting device, FIG. 5 is a plan view of a scraping device, FIG. 6 is a rear view of the same, and FIG. 7 is a bottom view showing a pulling belt and a rear cutting device. 8 is a sectional view taken along line XX of FIG. 7, FIG. 9 is a sectional view taken along line YY of FIG. 7,
FIG. 10 is a partial cross-sectional side view showing the inside of the main frame, FIG. 11 is an elevational sectional view of the same, FIG. 12 is a side view showing the main frame part, and FIG. Fig. 14 is a front view of a bracket for connecting the main frame and the pulling device, and Fig. 15 is a side view of the same.
Figure 16 is a front elevational view of the harvester on stand, No. 17
The figure is also a side view, FIG. 18 is a side view when the cutting unit and the like are removed, FIG. 19 is an elevation sectional view of the front cutting tool, FIG. 20 is a plan view of the tension mechanism, and FIG. 21 is the same. Sectional view, No.
22 is an elevation view showing another example of the front cutting tool, FIG. 23 is a plan view and a side view showing the claws of the scraping wheel, FIG. 24 is an overall perspective view, and FIG. 25 is a rear cutting tool. It is a top view which shows the other example. 1 ... Airframe, 2 ... Traveling device, 3 ... Extraction device, 41 ...
Handle, 45,46,47 …… Pulley, 51 …… Belt frame, 83 …… Front cutting tool, 120,121 …… Scraping wheel, 123
…… Chute, 129,130 …… Post-cutting tool, 131 …… Opening prevention tool.

Claims (6)

[Claims] 1. A pulling device (3) comprising a pair of left and right traveling devices (2) and a pair of left and right pulling pinching bodies (3A) (3B) for pulling while sandwiching a crop (S) such as ginger while conveying it backward. )When,
Cutting tool for cutting the stem of crop (S) (83) (129) (130)
And a steering handle (41), the cutting tools (129) and (130) are the stems of the withdrawn crop (S) in the latter half of the conveying direction of the withdrawal device (3). The cutting tool (129) (130) supports a pair of left and right pull-out sandwiching bodies (3A) (3B) to be cut while being sandwiched between the pull-out sandwiching bodies (3A) (3B). Pair of left and right frames (51)
Are connected to each other, and the straight blades (129A) (130A) of the pair of left and right cutting tools (129) (130) are formed in a V-shape that is tapered in the transport direction, and intersect on the extraction center line. A harvester for ginger and the like, which is equipped with a section. 2. A cutting tool (83) for cutting a stalk on the upper surface side of the pulling clamps (3A) (3B) of the scraped crop (S) is provided on the starting end side of the pulling device (3). The harvester for ginger or the like according to claim 1, characterized in that 3. A mouth opening prevention tool (13) in which a pair of left and right frames (51) are connected to each other near the rear part of the cutting tools (129) (130).
The harvester for ginger or the like according to claim 1, wherein the harvester is provided with 1). 4. A pair of left and right pull-out sandwiching bodies (3A) (3B),
Rotating guides (45) (46) on the pair of left and right frames (51)
The pair of left and right rotary guides (45) (46) (47), which are respectively supported via (47), are inclined such that their axial centers are upwardly opened. ) A harvester for ginger, etc. as described. 5. A scraping wheel (120) (121) is provided at the conveying end of one of the pair of left and right pulling clamps (3A) (3B) of the pulling device (3), and the wheel (120) (12) is provided.
A chute (123) for supporting the cut stem of the crop (S) clamped by the pulling clamps (3A) (3B) and discharging it laterally is provided below 1). (1)
Harvesting machine for ginger etc. described. 6. The control handle (41) and the traveling device (2) serve as a stand for maintaining the lifting posture when the front part of the harvester is lifted. (1) A harvesting machine for ginger and the like according to the above.