JP2014236681A - Root crop harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester that can reliably pull out root crops such as carrots and bulbs such as onions and garlics and can be downsized.SOLUTION: A root crop harvester comprises holding and conveying means 3 for holding stems and leaves of root crops K from the right and the left, pulling out them, and conveying them. The holding and conveying means 3 comprises: pull-out belts 110 and 110 for holding the root crops K from the right and the left and pulling out them; and conveying belts 120 and 120 for receiving the root crops K pulled out by the pull-out belts 110 and 110, holding them, and conveying them. Front end parts of the conveying belts 120 and 120 are arranged under rear end parts of the pull-out belts 110 and 110, and a region in which the pull-out belts 110 and 110 overlap with the conveying belts 120 and 120 in a planar view of the holding and conveying means 3 is set as a receiving part 13.

Description

  The present invention relates to a root vegetable harvesting machine for root vegetables such as carrots and persimmons.

  2. Description of the Related Art Conventionally, a self-propelled root vegetable harvesting machine for extracting, pinching and transporting root vegetables planted in a row in a farm is known. Such a self-propelled root crop harvester has a pair of left and right endless belts extending from the front lower part near one side of the traveling machine body to the upper rear part of the traveling machine body that runs on the pair of left and right traveling crawlers mounted on the traveling machine body. (Refer to Patent Document 1). As such a root vegetable harvesting machine, a subsoiler equipped with an excavating blade that excavates the lower part of root vegetables such as carrots vegetated in the field by vibration is provided below the starting end side (front end side) of the sandwiched endless belt. On the other hand, a pair of left and right rotary cutters for cutting between the stems and leaves of the carrots to be sandwiched and transported are arranged at the rear end of the pair of left and right sandwiched endless belts.

JP 2011-041477 A

  In the conventional root vegetable harvesting machine including the root vegetable harvesting machine described in Patent Document 1, the root vegetables are pulled out at the start end (front end) of the nipping conveyance endless belt for nipping and conveying the root vegetables. The inclination of the band is a range in which the root vegetables can be extracted. Therefore, when the inclination of the sandwiched endless belt is steep, the root vegetable harvesting machine can be shortened to reduce the size of the device, but the root vegetable on the front end of the sandwiched endless belt can be reduced. There is a problem that it becomes difficult to pull out the kind. On the other hand, when emphasizing the extraction of root vegetables on the front end side of the sandwiched endless belt, it is better to tilt the sandwiched endless belt with respect to the field scene. Due to the increase in length, there are problems such as an increase in the size of the harvester and an increase in the turning range.

  The present invention has been made to solve these problems, and is capable of reliably carrying out the extraction work of root vegetables such as carrots and bulbs such as onions and garlics, and can be downsized. The purpose is to provide a harvesting machine.

  In order to achieve the above object, a root vegetable harvesting machine according to the first aspect of the present invention includes a sandwiching conveyance unit that sandwiches and extracts the stems and leaves of root vegetables planted in a field from the left and right, and the sandwiching conveyance unit. In a root crop harvesting machine comprising a root and leaf portion cutting means for cutting the root and leaf portion of the root vegetable in the vicinity of the rear end portion thereof, the pulling belt for pinching and pulling the root vegetable from the left and right. And a conveyor belt that receives the root vegetables extracted by the extraction belt and sandwiches and conveys them to the foliage cutting means, and the front end of the conveyor belt is disposed below the rear end of the extraction belt In addition, a region where the pulling belt and the conveying belt overlap with each other when the sandwiching and conveying means is viewed in plan is used as a root portion of the root vegetables.

  According to a second aspect of the present invention, in the root vegetable harvesting machine according to the first aspect, the inclination angle of the conveyor belt with respect to the field is larger than the inclination angle of the extraction belt with respect to the field.

  The invention according to claim 3 is the root vegetable harvesting machine according to claim 1 or 2, wherein the guide portion that regulates the upper end position of the root vegetables held and conveyed by the pulling belt is provided as the inheriting portion. The transfer section is configured such that the upper end position of the root vegetables is aligned by the guide section and is transferred from the drawing belt to the transport belt.

  According to a fourth aspect of the present invention, in the root vegetable harvesting machine according to the third aspect, the guide is constituted by a guide bar extending from the lower side of the pulling belt toward the front end of the conveying belt. Is.

  Invention of Claim 5 is a root treatment for processing a bulb part among the root vegetables clamped and conveyed by the said conveyance belt in the root vegetable harvester as described in any one of Claims 1-4. The section is disposed below the transport belt and downstream of the transfer section along the transport direction of the transport belt.

  As described in detail above, the root vegetable harvesting machine according to the first aspect of the present invention includes the sandwiching and conveying unit that sandwiches and extracts the stems and leaves of the root vegetables planted in the field from the left and right, and the sandwiching and conveying unit. In a root crop harvesting machine comprising a root and leaf portion cutting means for cutting the root and leaf portion of the root vegetable in the vicinity of the rear end of the root vegetable, the holding and conveying means holds the root vegetable from the left and right and pulls it out A belt, and a conveyor belt that receives the root vegetables extracted by the extraction belt and sandwiches and conveys the root vegetables to the foliage cutting means, and the front end of the conveyor belt is below the rear end of the extraction belt. An area where the pulling belt and the conveying belt overlap with each other when the holding and conveying means is viewed in plan is used as the root vegetable inheriting portion, so that the pulling force of the root vegetables by the pulling belt is maintained. Unwilling also an effect that the conveyor belt irrespective of the configuration of the pull belt can be constituted by conveyor length required. Therefore, in the root vegetable harvesting machine, it is possible to reliably perform the extraction operation of root vegetables and to reduce the size thereof.

  In the second aspect of the present invention, the inclination angle of the conveyor belt with respect to the field is made larger than the inclination angle of the extraction belt with respect to the field, so that the extraction force of the root vegetables by the extraction belt is sufficiently increased. By doing this, while keeping the root vegetables from being dug, the conveyance length necessary for the post-treatment to the root vegetables can be secured, and at the same time, the total length of the root vegetable harvester can be shortened.

  Further, the invention according to claim 3 is provided with a guide part for restricting an upper end position of the root vegetables nipped and conveyed by the pulling belt in the inheriting part, and the root vegetables are provided by the guide part in the inheriting part. Since the upper end position of the root portion is aligned and transferred from the pull-out belt to the transport belt, the root vegetables transported by the transport belt are stably transported with the root top end position aligned. The Rukoto. Accordingly, the root vegetable processing operation can be stably performed in the bulb processing unit and the foliage cutting unit.

  In the invention according to claim 4, since the guide is constituted by a guide bar extending from the lower side of the extraction belt toward the front end of the conveyance belt, It has a function of favorably performing the operation of inheriting root vegetables to the conveyor belt, and also functions as a means for preventing clogging of root vegetables.

  According to a fifth aspect of the present invention, there is provided a bulb processing unit for processing a bulb portion of root vegetables sandwiched and conveyed by the conveyance belt, on a lower side of the conveyance belt in a conveyance direction by the conveyance belt. Since the root vegetables that are stably conveyed by the conveyor belt through the inheritance section can be processed by the bulb processing section, the work efficiency is good. There is an effect.

It is a side view of a root crop harvesting machine. It is a top view of a root crop harvesting machine. It is a front view of a root crop harvesting machine. It is an enlarged side view of the periphery of the inheritance part in the clamping conveyance means. It is a side view of a foliage part cutting means. It is a side view of a root hair cutting means. It is a principal part enlarged plan view of a root hair cutting means. It is a principal part enlarged front view of a root hair cutting means. It is a side view which shows another structure of a root hair cutting | disconnection means.

  Next, an embodiment embodying the present invention will be described. 1 is a side view of a root vegetable harvesting machine, FIG. 2 is a schematic plan view of the whole root vegetable harvesting machine, FIG. 3 is a schematic front view, FIG. 4 is a schematic side view of the periphery of the transfer section in the nipping and conveying means, and FIG. FIG. 6 is a side view of the root hair cutting means.

  The root vegetable harvesting machine of the present invention is to extract the root vegetables K from the field, sandwich and convey them, and harvest them. The root vegetables K used below are root vegetables such as carrots and persimmons as described above. In addition to (root vegetables), bulbs such as onions, garlic, and lily roots (including bulb vegetables and bulbs).

  In the plan view shown in FIG. 2, a pair of left and right traveling crawlers 2 a and 2 b are disposed below the traveling machine body 1, and on the traveling machine body 1, the side where the root vegetables K such as carrots are already dug up (the upper side in FIG. 2, the traveling direction). On the inner side of the outer edge of the traveling crawler 2b (on the right side), the steering column 4, the driver seat 5, and the engine 6 are disposed from the front end, and the transmission 7 is disposed on the rear end side of the traveling body 1, Power is transmitted from the transmission 7 to drive wheels 8 (see FIG. 1) disposed at the rear ends of the pair of left and right traveling crawlers 2a and 2b. Further, at least the nipping / conveying means 3 for extracting and nipping the root vegetables K on the unexcavated side of the root vegetables K (the lower side in FIG. 2 and the outside of the outer edge of the traveling crawler 2a on the left in the traveling direction is referred to as the unexcavated side). It arrange | positions so that the start end part (front-end part) side may be located.

  As shown in FIGS. 1 to 3, the holding and conveying means 3 is arranged on the front lower side so that its starting end (front end) is located in the field scene 19, and a pulling unit 11 for pulling out root vegetables K, and a pulling unit 11 is provided so that the start end (front end) is positioned below the terminal end (rear end) of 11, and a transport unit 12 that inherits the root vegetables K from the pull-out unit 11 and transports them backward. The pulling part 11 and the conveying part 12 constituting the holding and conveying means 3 are each supported by a working part turning fulcrum 9 near the rear part of the traveling machine body 1 so as to be pivotable up and down via a bracket 10a. 101 and 102 are supported. At this time, the support frame 101 of the extraction unit 11 is connected to the support frame 102 of the transport unit 12 and the support frame 102 is connected to the bracket 10a. The support frames 101 and 102 are configured separately in the present embodiment, but may be configured integrally.

  The pull-out portion 11 has a pair of left and right endless belts (drawer belts) 110 and 110 wound around a pair of left and right start end wheels 111 and 111 and end wheel 112 and 112 mounted on the support frame 101, and a endless endless belt The front and rear halfway portion 110 is configured to be supported in a substantially straight line by a large number of intermediate wheels 113. Similarly to the pull-out unit 11, the pair of left and right endless belts (conveyor belts) 120, 120 are also provided on the pair of left and right start end wheels 121, 121 and end wheels 122, 122 attached to the support frame 102. While being wound, the front and rear intermediate portions of the sandwiched endless band 120 are supported by a number of intermediate wheels 123 in a substantially straight line.

  In this way, when the nipping endless bands 110 and 120 in the pull-out part 11 and the conveying part 12 are supported in a substantially straight line, the holding endless bands 110 and 120 are connected to the transfer part 13 to which the support frames 101 and 102 are connected. Superimpose each holding area. Thereby, the nipping conveyance of the stem and leaf part of the root vegetables K by the nipping endless bands 110 and 120 is performed on the same conveyance line H. That is, the pinching and conveying line H of the root vegetables K by the pinching endless bands 110 and 120 travels in a plan view outside the outer edge of the digging side traveling crawler 2a close to the uncut digging side of the root vegetables K. It arrange | positions so that it may become substantially parallel to the advancing direction of the body 1. FIG.

  The clamped endless belts 110 and 120 are both V-belt portions that fit into V-shaped grooves such as double ends on the outer periphery of the start end wheels 111 and 121, the end end wheels 112 and 122, and the intermediate wheels 113 and 123; A soft sandwiching portion for resiliently sandwiching (so as not to cut the foliage when pressed), and this soft sandwiching portion has a high rubber hardness on the surface of a soft foam such as sponge rubber, and The surface layers are not bonded to each other by a pressing force that is stationary for a long period of time, and are covered with a surface layer such as hard rubber or silicone rubber having moisture impermeability.

  In addition, in the extraction part 11, the start part (starting end part) of nipping conveyance is comprised by providing the large diameter scraping wheel (not shown) rotated integrally with a pair of left and right starting end wheels 111 and 111. . Further, the pair of left and right end wheels 112, 112 in the pull-out unit 11 and the pair of left and right end wheels 122, 122 in the transport unit 12 are arranged apart from each other, so that the endless belt 110 sandwiched by the intermediate wheels 113, 123 is disposed. , 120 can be smoothly transferred to the downstream transport unit (the transport unit 13 or the foliage discharging device 43).

  In this way, the holding and conveying means 3 receives the root vegetables K that are pulled out by the pulling belts 110 and 110 and the endless leaves that will be described later. And nipping endless belts (conveying belts) 120 and 120 for nipping and conveying the cutting means 44. The front end portions of the conveyor belts 120 and 120 are disposed below the rear end portions of the extraction belts 110 and 110, and the extraction belts 110 and 110 and the conveyor belts 120 and 120 are arranged in a plan view of the nipping / conveying means 3. The overlapping region is configured as a succession unit 13 in which the extraction unit 11 delivers the root vegetables K to the conveyance unit 12.

  At this time, since the inclination angle of the conveyor belts 120 and 120 with respect to the farm scene 19 is increased with respect to the inclination angle of the extraction belts 110 and 110 with respect to the farm scene 19, the length of the nipping and conveying means 3 can be shortened. The root crop harvester can be downsized. That is, by reducing the angle of inclination of the extraction belts 110 and 110 with respect to the field scene 19 and increasing the extraction force of the root vegetables K by the extraction belts 110 and 110, while preventing the root vegetables K from being left behind, the conveyance belt 120 is prevented. , 120 with respect to the field scene 19 can be increased to secure the conveyance length necessary for the post-processing to the root vegetables K, and at the same time, the total length of the root vegetable harvesting machine can be shortened.

  As shown in FIGS. 1 and 4, a guide rod (guide bar) serving as a guide portion for regulating the root upper end position of the root vegetables K sandwiched and conveyed by the sandwiching endless belts (pulling belts) 110, 110 in the inheritance portion 13. 131). The guide rod 131 is configured to extend from the lower side of the sandwiched endless belts (drawing belts) 110, 110 toward the front end portion of the sandwiched endless belts (conveyor belts) 120, 120. Align and transfer from the extraction belts 110 and 110 to the conveyance belts 120 and 120. Accordingly, the root vegetables K transported by the transport unit 12 are stably transported with the root top end positions aligned, and are processed by the root hair cutting means 56 (bulb processing section) and the foliage cutting means 44 described later. Work can be executed stably. The guide rod 131 also has a function of favorably performing the operation of inheriting the root vegetables K from the pull-out section 11 to the transport section 12 in the inheritance section 13, and also functions as a clogging prevention means for the root vegetables K.

  The nipping and conveying means 3 configured as described above is such that when the root vegetable K in the field is nipped at the front end side of the sandwiched endless belts 110 and 110 and pulled out from the field in the pullout unit 11, the rear end side of the pullout unit 11 The root vegetables K are sandwiched and conveyed by the endless belts 110 and 110 toward the successor 13. And in the inheritance part 13, it conveys from the extraction part 11 because the pinching endless belts 120 and 120 of the conveyance part 12 pinch the lower side of the pinching endless belts 110 and 110 of the root and leaf portion of the root vegetable K. The root vegetable K is handed over to the part 12. Then, the root vegetables K transferred from the pull-out unit 11 to the transport unit 12 by the transfer unit 13 are further nipped and transported rearward by the sandwiching endless bands 120 and 120 of the transport unit 12, and the root hair cutting means 56 (bulb) described later The processing step by the processing unit) and the foliage cutting means 44 is performed.

  Moreover, as shown in FIGS. 1-3, the stem and leaf part of the root vegetables K which should be pulled out on the front left side (the uncut side of the root vegetables K) in the above-mentioned clamping conveyance means 3 in the above-mentioned clamping conveyance means 3 A divider 14 (branching mechanism) is provided for separation so as not to get entangled with the stems and leaves of the unveiled root vegetable K. The divider 14 has a large number of weed tines 15 whose base ends are spaced at a predetermined interval on the outer periphery of an endless belt (not shown) that is driven to rotate. Each of the weed tines 15 of the divider 14 is rotated longitudinally by an endless belt (not shown) so that the front side of the traveling direction of the traveling unit 1 is within a substantially vertical plane along the traveling direction of the traveling unit 1. Move upward from the farm scene 19 side.

  Further, the foliage scraping device for scraping the foliage portion of the root vegetable K to be pulled out in the nipping and conveying line H direction on the front right side of the pulling portion 11 (the side where the root vegetable K has already been dug up) in the holding and conveying means 3 described above. 16 is arranged. In this foliage scraping device 16, a number of scraping tines 17 whose base ends are set at predetermined intervals are mounted on the outer periphery of an endless belt (not shown) that is driven to rotate. Further, the scraping tine 17 is disposed on the front side of the starting wheel 111 so as to be substantially orthogonal to the weed tine 15 in the divider 14. Then, each of the scraping tines 17 is laterally rotated by an endless belt (not shown), and on the front surface side in the traveling direction of the traveling machine body 1, upward from the farm scene 19 on a plane intersecting the traveling direction of the traveling machine body 1. Moving. The tip end of the driven tine 17 is disposed so as to face the side cover portion that is the non-operating side of the weed tine 15 in the case of the divider 14.

  In this way, the weed tine 15 that moves upward in a substantially vertical plane of the divider 14 and the foliage scraping device 16 that has the scraping tine 17 orthogonal to the side surface cover portion of the divider 14 should be dug up. The left and right sides of the stalks and leaves of the root vegetables K can also be scraped upward. The weed tine 15 and the scraping tine 17 are made of an elastic body such as rubber, and the tips of the tines 15 and 17 are bent when they come into contact with the field scene 19 and are then restored in shape. ing.

  As shown in FIG. 1, the rotation fulcrums 20, 21 on the base end side of the upper link 22 and the lower link 23 as the elevating link mechanism for elevating the subsoiler are located in front of the working unit rotation fulcrum 9. A vertical support rod 24 is connected to the distal end side of the upper link 22 and the lower link 23 as parallel links which are arranged on the inner side surface of a certain traveling machine body and which can be vertically rotated around the vertical rotation fulcrums 20 and 21. A digging blade 25 is fixed to the lower end of the vertical support rod 24.

  1 and 2, an endless belt 29 is wound around the pulley 28 fixed to the input shaft 20a of the upper rotation fulcrum 20 and the output pulley 27 of the engine 6, and the input shaft 20a. The base end of the upper link 22 is connected via an eccentric boss (not shown) fitted to the input shaft 20a, and the upper link 22 is driven to vibrate in the vertical direction. Thereby, the digging and raising blade 25 inserted from the farm scene 19 is vibrated up and down and / or back and forth below the root of the root vegetable K, so that the root of the root vegetable K can be easily pulled out as the traveling machine body 1 moves forward. It is configured as follows. Further, the parallel upper and lower links 22 and 23 are configured to be moved up and down by a hydraulic cylinder 26 mounted between the base end of the lower link 23 and the traveling machine body 1.

  As can be understood with reference to FIG. 2 and FIG. 3, in plan view, behind the foliage raising device 16, the digging blade 25 in the subsoiler, the vertical support rod 24, and the vertical support rod 24 are moved up and down. And a lifting link mechanism (upper and lower links 22, 23) are arranged so as to overlap with the foliage scratching device 16 in a plan view, and as shown in FIG. The vertical support rod 24 and the lifting link mechanism (upper and lower links 22, 23) for raising and lowering the vertical support rod 24 are arranged so as not to overlap with the foliage raising device 16.

  Further, as shown in FIG. 2, the lifting link mechanism (upper and lower links 22, 23) in the subsoiler overlaps with the traveling crawler 2 a on the non-digging side in plan view, but as shown in FIG. During the digging work located in 19, the lower link 23 is arranged so as not to interfere with the traveling crawler 2 a in a state where the lifting link is lowered.

  As shown in FIGS. 1 to 3, a forward-facing pipe frame 31 is connected to the tip of a pipe-shaped power transmission lateral frame 30 provided on the concentric shaft with the working part rotation fulcrum 9. Connected to the tip of the forward pipe frame 31 is a transmission pipe 32 for scraping the leaves and leaves extending toward the side where the root vegetables K have already been dug up above the midway portion in the longitudinal direction of the holding and conveying means 3. Furthermore, the upper part of the divider 14 is connected to the transmission case 33 extending forward from the unexcavated side (left side) end of the transmission pipe 32 for scraping the foliage via the transmission case 34 for the divider.

  Then, from a pulley 37 fixed to an input shaft 20a coaxial with the rotation fulcrum 20 of the upper link 22, via an endless belt 38 such as a belt, it is on the concentric shaft with the work unit rotation fulcrum 9 and is on the side of power transmission. Power is transmitted to the pulley 40 fixed to the protruding end of the input shaft 39 that is inserted into the frame 30. Furthermore, the power is transmitted to the foliage scavenging device 16 and the divider 14 via a transmission mechanism such as a transmission shaft in the forward pipe frame 31, the foliage transmission pipe 32, the transmission case 33, and the divider transmission case 34. .

  In addition, power is transmitted from the pulley fixed to the input shaft 39 that is a concentric shaft to the working unit rotation fulcrum 9 to the rear transmission case 42 via the chain 41, and in the conveyance unit 12 of the nipping conveyance unit 3, Since a rotational force is applied to the input portion coaxial with both the end wheels 122, the pair of left and right sandwiched endless belts 120 and 120 are rotationally driven. On the other hand, the pull-out portion 11 provided in front of the transport unit 12 is connected to both end wheels 112 and 112 of the transport unit 12 by the power transmission mechanism (not shown) provided in the transfer unit 13. The rotation from is transmitted. Accordingly, the pair of left and right endless bands 110 and 110 of the pull-out portion 11 are driven to rotate in the same direction as the pair of left and right endless bands 120 and 120 of the transport unit 12. In addition, the power transmission mechanism for rotationally driving the clamping endless belt 110 of the extraction unit 11 is not limited to the configuration transmitted from the conveyance unit 12, and for example, the rotational force from the working unit rotation fulcrum 9 is extracted. You may provide the power transmission mechanism transmitted to the part 11 independently.

  As shown in FIG. 5, on the lower rear side of the both end wheels 122 of the transport unit 12, endless transport belts 43 a and 43 b arranged vertically as a pair of left and right for transporting the stems and leaves of the root vegetables K horizontally rearward. The foliage discharging device 43 and a pair of left and right horizontally rotating rotary blades 44a, 44a are installed. In addition, a pair of left and right guide rods 45 for allowing the foliage discharging device 43 to inherit the foliage part by guiding the upper end of the root part of the root vegetables K in the horizontal rear direction below the both end wheels 122 of the transport unit 12. Is arranged.

  At this time, the power transmitted to the rear transmission case 42 via the chain 41 is also transmitted to the foliage discharge device 43, and the foliage discharge device 43 rotationally drives the pair of left and right endless transport bands 43a and 43b. Further, since power is transmitted to the side chain sprocket 60 of the transmission case 44b of the foliage cutting means 44 via the chain 41, the power from the transmission case 44b is further rotated left and right through a pair of left and right arm cases 44c, 44c. This is transmitted to the blades 44a and 44a, and the pair of left and right rotary blades 44a and 44a rotate horizontally.

  In the transmission case 44b, as shown in FIG. 5, a pair of left and right arm cases 44c, 44c having shafts and side bevel gears for driving the left and right rotary blades 44a, 44a are provided. It projects forward at wider intervals. Both rotary blades 44a, 44a are partially wrapped on the opposite sides. The pair of left and right rotary blades 44a, 44a are configured to rotate from the upstream side in the conveyance direction of the root vegetables K toward the downstream side on the opposite side thereof, so that the root vegetables introduced from the upstream side in the conveyance direction. The K foliage portion KI is easily drawn into the lap portion by the rotation of the rotary blades 44a and 44a. In other words, there is no dance phenomenon in which the foliage part KI returns to the upstream side in the transport direction at the outer peripheral edge of the rotary blade 44a.

  A shock absorbing plate (not shown) such as a sponge plate is disposed so as to surround the inner surface of the transmission case 44b and the pair of left and right arm cases 44c, 44c so that the cut root vegetables K do not directly collide with the hard case. It has become. Further, when the transmission case 44b is mounted, the bracket 35 protruding downward from the transmission case 44b is supported rotatably on the frame 50 via the support shaft 59, and the rotary blade is centered on the support shaft 64. If the chain wound around the side chain sprocket 60 is set to be on the loose side when rotating so that the 44a, 44a side faces downward, maintenance work such as replacement of the rotary blade 44a is facilitated.

  Below the foliage cutting means 44, the roots of the root vegetables K from which the foliage parts have been cut and separated are received and sorted to the side of the rear end of the traveling machine body 1 (the side where the root vegetables K have already been dug up). A conveyor 46 is disposed, and power is transmitted from the PTO output shaft 36 of the transmission 7 to the input unit 46a to the sorting conveyor 46 via pulleys and chains 47a and 47b. In this sorting conveyor 46, a large number of rod-shaped slats are stretched between a pair of endless chains at regular intervals, and an operator walking at the rear end of the traveling machine body 1 is placed on the sorting conveyor 46. Select defective products from root vegetables K. At the discharge end of the sorting conveyor 46, there is a longitudinal container base 49 on which a container 48 for receiving and accumulating non-defective root vegetables K is placed. The container base 49 is connected to the side surface of the traveling machine body 1 through a hinge so that the base end can be turned up and down. The container base 49 rotates upward when not working, and the container base 49 becomes substantially horizontal when working. The posture is maintained.

  On the other hand, the cut leaves of the root vegetables K are discharged from the rear end of the foliage discharge device 43 to the field scene 19. That is, the cut leaves of the root vegetable K are discharged to the rear of the traveling machine body 1 from the guide plate 55 extending from the rear end of the foliage discharge device 43. At this time, since the guide plate 55 has a configuration curved toward the already dug up side (right side), the stem plate and leaf portion of the root vegetables K does not fall into the unseen side (left side) field scene 19. Guided at 55 and discharged to the rear of the traveling machine body 1.

  Further, as described above, the frames of the respective device units are connected so that the holding and conveying means 3, the foliage scraping device 16 and the divider 14 are integrally rotated up and down around the working unit rotation fulcrum 9. It is supported with respect to the farm scene 19 by the ground contact front wheel 52 attached to the front end of the support rod 51 protruding forward from the front side thereof. Then, when not working or traveling on the road, the digging blade 25, the pulling portion 11 of the sandwiching and conveying means 3, the foliage scraping device 16, and the lower end of the divider 14 are held in the raised position so that they do not interfere with the ground. When the hydraulic cylinder 26 is driven, the front end sides of the parallel upper and lower links 22 and 23, which are lifting link mechanisms, rotate upward.

  At this time, as shown in FIGS. 1 and 2, the upper surface of the rotatable roller 53 provided on the side surface of the lower link 23 is provided on the lower surface side of the support frame 101 of the pulling portion 11 of the nipping and conveying means 3. If it is configured to move along the lower surface of the guide rail 54 having a “H” shape when viewed from the side, the pinch conveying means 3 together with the digging blade 25 by the operation of the piston rod protruding movement of one hydraulic cylinder 26. Thus, the lower ends of the foliage scraping device 16 and the divider 14 can be integrally lifted upward from the field scene 19.

  On the lower side of the conveying unit 12 in the nipping and conveying means and downstream of the inheriting unit 13 along the conveying direction by the conveying belts 120 and 120, as shown in FIG. Root hair cutting means 56 for cutting the root hair of the root vegetable K of the root vegetable, that is, the root hair portion (tail portion) K2 at the tip of the main root K3 (ground portion) of the root vegetable K is provided. As described above, the root hair cutting means 56 is arranged on the downstream side of the transfer section 13 on the lower side of the transport section 12, so that the root vegetable K whose root upper end position is aligned with the guide rod 131 of the transfer section 13 is converted into the root hair cutting means. 56. The root hair cutting unit 56 includes a root hair cutter unit 57 for cutting the root hair K2 of the root vegetable K that is transported while being nipped and supported by the transport unit 12 of the sandwiching transport unit 3. It comprises a root vegetable guide 58 for guiding the root hair K2 toward the root hair cutter portion 57, and is arranged in the middle of the transport path by the transport portion 12 of the sandwiching transport means 3.

  The root hair cutter portion 57 includes a pair of left and right rotary blades 63, 63 attached to a transmission case 62 and a rotary shaft 64 protruding above the transmission case 62, and a pair of left and right rotations attached to the upper side via a spacer 65. It is comprised from the guide bodies 66 and 66. FIG. As can be understood from FIGS. 7 and 8, the pair of left and right rotating blades 63, 63 and the pair of left and right rotating guide bodies 66, 66 rotate from the upstream side toward the downstream side in the conveying direction of the root vegetables K on the opposite side. Then, it partially wraps on the opposite sides of the rotary blades 63, 63, cuts off the root hair portion K2 passing through the wrap portion, the thick main root K3 portion on the upper side thereof is the pair of left and right rotation guide bodies 66, It is guided to the downstream side of conveyance between three blades of rubber or the like in 66.

  The pair of left and right rotary blades 63, 63 and the pair of left and right rotation guide bodies 66, 66 are configured to rotate from the upstream side toward the downstream side in the conveyance direction of the root vegetables K on the opposite side. The stem and leaf portion KI of the root vegetable K introduced from the upstream side in the direction is easily drawn into the lap portion by the rotation of the rotary blades 63 and 63 and the rotary guide bodies 66 and 66. In other words, there is no dance phenomenon in which the foliage KI returns to the upstream side in the transport direction at the outer peripheral edge of the rotary blade 63.

  The transmission case 62 is pivotally supported by a support bracket 68 so as to be rotatable about an axis of a transmission shaft 67 extending in a direction orthogonal to the rotation shaft 64, and the support bracket 68 is provided on the conveyance unit 12 in the nipping / conveying means 3. It is fixed to the support frame 102. The support bracket 68 is provided with an arcuate guide groove hole 69 centered on the axis of the transmission shaft 67, while a bolt 71 provided on the arm 70 protruding from the transmission case 62 is provided in the guide groove hole 69. The transmission case 62 is loosely fitted, and the transmission shaft 62 has a substantially vertical posture in which the rotating shaft 64 is directed toward the lower surface of the endless band 3, and the rear end direction is substantially parallel or inclined with the lower surface of the rotating endless band 3. It is possible to adjust the posture to a rearwardly inclined posture toward the front and to hold the posture by tightening with a nut 72 in a predetermined posture.

  Further, power is transmitted via a belt 75 wound around a pulley 73 fitted on the input shaft 39 concentric with the working portion rotation fulcrum 9 and a pulley 74 fitted on the transmission shaft 67, and the transmission case 62 is transmitted. The pair of left and right rotating shafts 64, 64 are configured to rotate in a predetermined direction via a transmission mechanism such as an internal bevel gear.

  The root vegetable guide 58 has a base end fixed to the support bracket 68, and a pair of left and right guide support rods 76, 76 that extend substantially parallel to the lower surface of the sandwiched endless belt 3 and extend toward the conveyance start end side, and a pair of left and right guide support rods 76. , 76 further to the conveyance start end side, and is constituted by left and right support arms 77 and 77 with the nipping conveyance line H interposed therebetween. The pair of left and right guide support rods 76 and 76 are U-shaped in plan view, and are disposed on the outer peripheral upper surfaces of the rotary blades 63 and 63. The pair of left and right support arms 77, 77 is a leading end in a plan view so that the left and right intervals are narrow on the outer peripheral side on the introduction side of the root vegetables K with respect to the rotary blades 63, 63, and the left and right intervals increase toward the conveyance start end side. It is spread out. The left and right support arms 77, 77 are attached with guide plates 79, 79 formed in a "<" shape so as to be able to cut out only the root hair portion K2 of the root vegetables K being nipped and conveyed. Guided.

  Moreover, as shown in FIG. 9, instead of the above-mentioned root vegetable guide 58 (FIGS. 6 to 8), a root vegetable guide 80 composed of a rod-shaped guide member 81 and a lower guide member 82 provided in a pair of left and right is provided. It does not matter as what is used. At this time, the guide members 81, 81 are arranged in a “C” shape when viewed from the front, and the lower guide members 82, 82 are arranged below the guide members 81, 81. And the root vegetable guide 80 sticks the front-end | tip of the lower guide members 82 and 82 to the inner side of the front-end | tip of the guide members 81 and 81, and protrudes in the left-right pair diagonally upward. Further, the guide members 81 and 81 and the lower guide members 82 and 82 are respectively bent in a substantially “<” shape when viewed from the front, and arranged so that the vertical distance of the rear part is narrower than the front part. The left and right distances of the rear part are the distances through which the root hair part can pass, and the distances between the guide members 81 and 81 are more than that and are slightly narrower than the width of the main root. Further, the rear ends of the guide members 81 and 81 and the lower guide members 82 and 82 are opened, so that mud, dirt, etc. attached thereto easily fall out backward.

  Furthermore, when the root vegetables K are bulbs such as onions and garlic, in order to treat these bulb parts (including bulbs and bulbs), instead of the root hair cutting means 56 described above, The soil removal means for soil adhering to the bulb part and the root excision means for excising the root extending from the lower end of the bulb part are installed as the bulb processing part. At this time, the soil removing means is composed of a pair of left and right rotating soil removers that come into contact with the bulb portion being sandwiched and conveyed, the root portion between the bulb portion and the foliage portion, and the like. In addition, the root excision means is arranged in the vicinity of the upstream side of the conveyance from the foliage cutting means 44. This root excision means, like the stem and leaf cutting means 44, is a pair of left and right guide rods for passing on the stem and leaf part to the stem and leaf discharge device while guiding the upper end of the bulb portion of the root vegetable in the horizontal rear direction, It is comprised by the rotary blade attached to the left-right paired rotating shaft which protruded above the transmission case arrange | positioned under the guide rod.

  In addition, the structure of each part in this invention is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention. For example, the mechanism for rotationally driving the clamping endless belts 110 and 120 in each of the pulling unit 11 and the conveyance unit 12 constituting the clamping conveyance unit 3 may be hydraulic or electric.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2a, 2b Traveling crawler 3 Nipping conveyance means 10 Support frame 11 Pull-out part 12 Conveying part 13 Succession part 101,102 Support frame 110,120 Nipping endless belt 111,121 End wheel 112,122 End wheel 113,123 Intermediate wheel

Claims (5)

A nipping and conveying means for nipping and conveying the roots and leaves of root vegetables planted in the field from the left and right, and a foliage cutting for cutting the roots and leaves of the root vegetables near the rear end of the nipping and conveying means A root crop harvesting machine comprising:
The holding and conveying means comprises a drawing belt for holding and extracting the root vegetables from the left and right, and a conveying belt for receiving and holding the root vegetables extracted by the drawing belt to the foliage cutting means.
The front end portion of the conveyor belt is disposed below the rear end portion of the pull-out belt, and a region where the pull-out belt and the transport belt overlap with each other when the holding and conveying unit is viewed in plan is used as the inheritance portion of the root vegetables. Root vegetable harvesting machine characterized by that.   The root vegetable harvester according to claim 1, wherein an inclination angle of the conveyor belt with respect to the field is increased with respect to an inclination angle of the extraction belt with respect to the field. A guide part for regulating the upper end position of the root part of the root vegetables nipped and conveyed by the pulling belt is provided in the inheriting part;
3. The root vegetable harvesting machine according to claim 1, wherein in the inheritance unit, the root part upper end position of the root vegetables is aligned by the guide unit and is transferred from the pulling belt to the transport belt. 4.   The root vegetable harvesting machine according to claim 3, wherein the guide is constituted by a guide bar extending from a lower side of the drawing belt toward a front end portion of the conveying belt.   A bulb processing unit for processing a bulb portion of the root vegetables sandwiched and conveyed by the conveyor belt is located below the conveyor belt and downstream of the successor along the conveyance direction of the conveyor belt. The root vegetable harvester according to any one of claims 1 to 4, wherein the root vegetable harvester is arranged in the root.

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