JP2018143169A - Root crop harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that, when harvesting a plurality of root crops planted in one ridge, the root crops are overlapped and interfere with each other in a preparation process such as roots/leaves cutting in mid-flow of conveyance, thereby causing irregularity in cutting positions of the root crops.SOLUTION: The root crop harvester according to the present invention includes: a pullout part 11 for pulling out foliage parts KS of the root crops K planted in a field, while clamping them from the left/right; and a conveyance part 12 conveying the root crops K received from the pullout part 11 to the rearward. A rear end side of the pullout part 11 is located in such a manner as to vertically overlap with a front-end lower side of the conveyance part 12. A difference is formed between a conveyance velocity V1 of the pullout part 11 and a conveyance velocity V2 of the conveyance part 12.SELECTED DRAWING: Figure 4

Description

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

  2. Description of the Related Art Conventionally, a self-propelled root vegetable harvesting machine that extracts and harvests root vegetables grown in a line on a farm field from the ground is well known. In the past, the present applicant has proposed the root vegetable harvesting machine disclosed in Patent Document 1. The root vegetable harvesting machine of Patent Literature 1 includes a pulling part that pulls out the stems and leaves of the root vegetables planted in the field from the left and right, and a transport unit that transports the root vegetables inherited from the pulling part backward, The rear end side of the drawing portion is positioned so as to overlap vertically above the front end of the transport portion. For this reason, it becomes possible to make the front and rear inclination angle of the extraction part with respect to the farm scene different from the front and rear inclination angle of the transport part with respect to the farm scene, while the root vegetables can be reliably extracted by laying the extraction part, There is an advantage that the entire length of the airframe can be shortened and made compact by inclining the transport section obliquely upward and rearward at a steeper angle than the extraction section.

JP 2014-236681 A

  By the way, when root vegetables are cultivated, a plurality of root vegetables may be planted in one persimmon. When harvesting a plurality of root vegetables that have been vegetated on one persimmon using the root vegetable harvesting machine of Patent Document 1, since the extraction unit and the conveyance unit are driven at the same conveyance speed, They are pulled out and transported (the transport density is high). If it does so, in the preparation processes, such as root cutting and leaf cutting in the course of conveyance, since root vegetables overlap, it interfered with each other, and there was a possibility of causing the problem that the cutting position of each root vegetable became uneven.

  This invention makes it a technical subject to provide the root vegetable harvesting machine which eliminated the said problem.

  The root vegetable harvesting machine according to the present invention comprises a pulling part that pulls out the roots and leaves of the root vegetables planted in the field from the left and right, and a transporting part that transports the root vegetables inherited from the pulling part to the rear. The rear end side is positioned so as to overlap vertically below the front end of the transport unit, so that there is a speed difference between the transport speed of the pulling unit and the transport speed of the transport unit.

  In the root vegetable harvesting machine of the present invention, the conveyance speed of the conveyance unit may be set to be faster than the conveyance speed of the extraction unit.

  Further, the root vegetable harvesting machine of the present invention may be provided with a traveling machine body on which the extraction unit and the conveyance unit are mounted, and the conveyance speed of the extraction unit may be synchronized with the moving speed of the traveling machine body.

  Further, in the root vegetable harvesting machine of the present invention, each of the extraction unit and the conveyance unit includes a pair of left and right endless bands for nipping and conveying the root vegetables, and the clamping force of the endless band pair in the extraction unit is the same as that of the endless band pair in the conveyance unit. You may set so that it may become larger than pinching force.

  According to the invention of the present application, it is provided with a pulling portion that pulls out the stems and leaves of the root vegetables planted in the field from the left and right, and a transporting portion that transports the root vegetables inherited from the pulling portion backward, and the rear end side of the pulling portion Is positioned so as to overlap vertically below the front end of the transfer unit, and there is a speed difference between the transfer speed of the extraction unit and the transfer unit, so it corresponds to the vegetation state of the root vegetables and the work situation Thus, it is possible to set the conveyance speed of the extraction unit and the conveyance speed of the conveyance unit. Regardless of the vegetation state of root vegetables, etc., it is possible to maintain high accuracy of preparation such as root cutting and leaf cutting in the course of conveyance. In addition, it is possible to make the entire length of the machine body shorter by laying the pull-out section and maintaining the pullability while tilting the transport section obliquely rearward and upward at a steeper angle than the pull-out section.

  In particular, if the transport speed of the transport section is set to be faster than the transport speed of the pull-out section, when root vegetables grown in a plurality of strips are harvested on one persimmon, the root vegetables that have been vegetated adjacent to each other overlap. Even if it is pulled out, the overlap can be separated and conveyed in the subsequent conveying section. Therefore, it becomes easy to maintain the accuracy of preparation such as root cutting and leaf cutting in the course of conveyance.

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 a harvesting work apparatus. It is an enlarged side view of the periphery of the inheritance part in another example.

  Next, an embodiment of the present invention will be described with reference to the drawings. The root vegetable harvesting machine according to the embodiment is for harvesting root vegetables K by pulling them out from the field, holding and conveying them. In the present application, “root vegetables K” is a concept including, for example, root vegetables such as carrots and persimmons, and bulbs such as onion, large persimmon, and lily roots.

  As shown in FIGS. 1 to 3, the root vegetable harvesting machine according to the embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 a and 2 b as a traveling unit. On the front right side of the traveling machine body 1, a steering column 4, a driver's seat 5, and an engine 6 are arranged in order from the front side. A transmission 7 is disposed on the rear side of the traveling machine body 1. The power transmitted from the engine 6 to the transmission 7 is transmitted to the drive wheels 8 provided at the rear of the pair of left and right traveling crawlers 2a and 2b.

  On the left side of the traveling machine body 1 is disposed a harvesting work device 3 that pulls out the root vegetables K and holds and conveys them. The harvesting work device 3 includes a pulling unit 11 that pulls out the root vegetables K vegetated in the field, and a transport unit 12 that inherits the root vegetables K from the pulling unit 11 and transports them backward. The extraction portion 11 is inclined obliquely upward (front low, rear high) with the front end facing the field scene. The front end side of the transport unit 12 is positioned so as to overlap vertically with the rear end upper side of the extraction unit 11. A region where the drawing unit 11 and the conveyance unit 12 overlap vertically is a transfer unit 13 that delivers the root vegetables K from the drawing unit 11 to the conveyance unit 12.

  The extraction frame 11 a that supports the extraction unit 11 and the conveyance frame 12 a that supports the conveyance unit 12 are connected to each other. The conveyance frame 12a is connected to a horizontally-turning pivot shaft 9 provided on the traveling machine body 1 via a bracket. The extraction part 11 and the conveyance part 12 can be rotated up and down around the rotation support shaft part 9 so as to raise and lower the extraction part 11 with respect to the field.

  A pair of left and right start end wheels 11b and end end wheels 11c are mounted on the drawing frame 11a. A drawing belt 11e as an endless belt is wound around the pair of left and right wheels 11b and 11c. A plurality of intermediate wheels 11d are brought into contact with the middle part of the drawing belt 11e before and after. When the pair of left and right extraction belts 11e are driven inwardly to each other, the root vegetables K are extracted from the field, and the stems and leaves KS of the root vegetables K are conveyed obliquely upward and rearward while being sandwiched from the left and right by the extraction belt 11e. The

  Similarly to the pull-out frame 11a, a pair of left and right start wheel 12b and end wheel 12c are attached to the transport frame 12a. A conveyance belt 12e as an endless belt is wound around the pair of left and right wheels 12b and 12c. A plurality of intermediate wheels 12d are brought into contact with the middle portion of the conveyance belt 12e before and after. When the pair of left and right transport belts 12e are driven inwardly to each other, the stems and leaves KS of the root vegetables K transferred from the drawing belt 11e are transported diagonally upward and backward while being sandwiched from the left and right by the transport belt 12e.

  As shown in FIGS. 2 and 3, the clamping part (butting part) of the pair of drawing belts 11 e and the clamping part (butting part) of the pair of conveying belts 12 e extend in a straight line. These clamping portions are vertically overlapped on the rear end side of the pair of drawing belts 11e and the front end side of the pair of conveying belts 12e. In the overlapping part (passage part 13), the stem and leaf part KS of the root vegetables K is inherited from the pair of drawing belts 11e to the pair of conveying belts 12e. That is, the nipping and conveying of the stems and leaves KS of the root vegetables K by the pulling belt 11e pair and the conveying belt 12e pair is performed along the nipping portion (conveying line H) extending linearly.

  In addition, although detailed illustration is abbreviate | omitted, the start part of the pinching conveyance in the harvesting work apparatus 3 is provided by providing the large-diameter scraping wheel which rotates integrally with these in the location of the pair of the start end wheels 11b of the extraction part 11. It is composed.

  In addition, the pulling belt 11e pair and the conveying belt 12e pair both elastically provide a V belt portion that fits in a V groove formed on the outer periphery of each of the wheels 11b to 11d and 12b to 12d, and a stem and leaf portion KS of the root vegetables K. And a soft clamping portion for clamping. Since the soft clamping part does not cut the foliage part KS of the root vegetables K during clamping, the surface of the soft foam such as sponge rubber is covered with a surface layer such as hard rubber or silicone rubber having high rubber hardness.

  In the embodiment, for example, by changing the foaming ratio of the soft foam or changing the rigidity of the surface layer, the holding force of the pulling belt 11e pair is set to be larger than the holding force of the pair of conveying belts 12e. ing. For this reason, in the extraction part 11, while the extraction performance of the root vegetables K improves, in the conveyance part 12, position adjustments (slide adjustment of the foliage part KS) etc. which are performed in the middle of conveyance can be performed smoothly.

  As shown in FIGS. 1 to 3, on the front left side (the unexcavated side of the root vegetable K) of the extraction portion 11, the foliage portion KS of the root vegetable K to be extracted is located on the left side (the unexcavated side). A divider 14 is provided so as not to get entangled with the stems and leaves KS of the root vegetables K in FIG. The divider 14 has a plurality of weed tines 15 mounted on the outer periphery of a tine chain that circulates in the vertical direction. Each weed tine 15 is configured to move upward from the field side on the front side in the traveling direction of the traveling machine body 1 by vertical rotation of the tine chain.

  On the front right side of the extraction portion 11 (the side where the root vegetables K have already been dug), a foliage scavenging device 16 that scrapes the foliage portion KS of the extraction target root vegetables K in the direction of the conveyance line H is disposed. The foliage scraping device 16 has a plurality of scoring tines 17 attached to the outer periphery of a scoring belt that circulates in the lateral direction. Each scavenging tine 17 is configured to move upward from the field side on the front side in the traveling direction of the traveling machine body 1 by the lateral rotation of the scooping belt. The positional relationship between the foliage scraping device 16 and the divider 14 is set so that the turning direction of the scraping tine 17 and the turning direction of the weed tine 15 are substantially orthogonal to each other in front of the extraction portion 11.

  By the weeding tine 15 group of the divider 14 and the scavenging tine 17 group of the foliage scavenging device 16, the left and right sides of the foliage KS where the root vegetables K to be pulled out are hung up are also scraped upward. it can. For this reason, the root vegetable K to be pulled out is smoothly pulled out from the field by the nipping and conveying start portion in the harvesting work device 3, and the foliage portion KS is securely pinched.

  As shown in FIG. 1, parallel links 22 and 23 that can be turned up and down around the upper and lower turning fulcrums 20 and 21 provided on the left and right center sides of the traveling machine body 1 are provided at the front portion of the traveling machine body 1. ing. A vertical support rod 24 is connected to the distal ends of the parallel links 22 and 23. A subsoiler body 25 that digs downward from the root portion of the root vegetables K is fixed to the lower end side of the vertical support rod 24. A hydraulic cylinder 26 is installed between the base end side of the lower link 23 of the parallel links 22 and 23 and the traveling machine body 1. The parallel links 22 and 23 are configured to move up and down by the expansion and contraction of the hydraulic cylinder 26.

  As shown in FIGS. 1 and 2, the endless belt 29 is wound around the first branch pulley 28 fixed to the input shaft 20a and the output pulley 27 of the engine 6 by digging the upper rotation fulcrum 20 and digging. The input shaft 20a is configured to rotate. The proximal end side of the upper link 22 is connected to the dug input shaft 20a via an eccentric boss (not shown) fitted on the input shaft 20a. The upper link 22 is configured to be driven to vibrate in the front-rear direction by the rotational power that has been dug and passed through the input shaft 20a and the eccentric boss. The subsoiler body 25 inserted into the field vibrates in the vertical direction and the front-rear direction below the root part of the root vegetables K. As a result, the root part of the root vegetables K is dug up so as to be easily pulled out as the traveling machine body 1 moves forward.

  As shown in FIGS. 1 and 2, a forward-facing pipe frame 31 is connected to the distal end side of a pipe-shaped power transmission lateral frame 30 provided on the concentric shaft with the rotation support shaft portion 9. Connected to the front end side of the forward-facing pipe frame 31 is a transmission pipe 32 for scraping the stalks and leaves that extends rightward (toward the already excavated side) above the midway portion in the longitudinal direction of the harvesting work device 3. The upper part of the divider 14 is connected to a transmission case 33 extending forward from the left end portion (unexcavated side end portion) of the foliage take-up transmission pipe 32 via a divider transmission case 34.

  Aside from the first branch pulley 28, a second branch pulley 37 is fixed to the excavation input shaft 20 a of the upper rotation fulcrum 20. On the other hand, a divider input shaft 39 is fitted in a power transmission lateral frame 30 provided on the concentric shaft with the pivot shaft 9. The endless belt 38 is wound around the second branch pulley 37 on the digging input shaft 20a and the divider input pulley 40 fixed to one end side of the divider input shaft 39, and the divider input shaft 39 is rotationally driven. doing. Rotational power transmitted to the divider input shaft 39 is transmitted through a transmission mechanism such as a forward pipe frame 31, a foliage scraping transmission pipe 32, a transmission case 33, and a transmission shaft in the divider transmission case 34. 16 and the divider 14 to rotate the foliage scraping device 16 and the divider 14.

  Power is transmitted from a PTO output shaft 36 provided in the transmission 7 to a rear transmission case 42 disposed behind the transport unit 12 (a pair of terminal wheels 12c) via a transmission mechanism such as a chain or a sprocket. Similarly, the PTO output shaft 36 is also transmitted to an input section (not shown) coaxial with each terminal wheel 12c of the transport section 12, and rotationally drives the transport belt 12e pair and the extraction belt 11e pair (for details). Will be described later). Behind the transport unit 12, a foliage discharge device 43 in which a pair of left and right endless transport belts that transport the foliage portion KS of the root vegetable K horizontally rearward is arranged vertically, and a cutting device 44 composed of a pair of left and right horizontal rotary blades; Is arranged. Rotational power is transmitted to the foliage discharging device 43 from the rear transmission case 42. Rotational power is transmitted from the PTO output shaft 36 to the cutting device 44.

  A root hair cutting device 56 that cuts a root hair portion (tail portion) on the tip end side of the root vegetables K is disposed below the middle portion in the transport direction of the transport unit 12. The root hair cutting device 56 also has a pair of left and right horizontal rotary blades. Although detailed illustration is omitted, rotational power is transmitted from the PTO output shaft 36 to these horizontal rotary blades.

  Below the cutting device 44, a sorting conveyor 46 that receives the root vegetables K obtained by cutting and separating the stems and leaves KS and conveys them to the rear right side of the traveling machine body 1 is disposed. Power is transmitted from the relay pulley 41 fixed to the other end side of the divider input shaft 39 on the same axis as the rotating support shaft portion 9 to the input portion 46a of the sorting conveyor 46 via a transmission mechanism such as a chain or a sprocket. Is done. An inferior product in the root vegetables K on the sorting conveyor 46 is selected by an operator walking behind the traveling machine body 1.

  On the discharge end side of the sorting conveyor 46, a longitudinal and longitudinal container table 49 is disposed. In the embodiment, the base end side of the container base 49 is connected to the right side surface of the traveling machine body 1 through a hinge so as to be vertically rotatable. When not working, the container table 49 is rotated upward for storage, and when working, the container table 49 is rotated downward and held substantially horizontal. A container 48 that receives and accumulates non-defective root vegetables K is placed on a container stand 49 that is held substantially horizontally. The cut leaves KS of the root vegetables K are discharged along the guide plate 55 extending to the rear end side of the foliage discharge device 43 to the field scene.

  The harvesting operation device 3 (the extraction unit 11 and the conveyance unit 12), the foliage scraping device 16, and the divider 14 are connected to each other so as to rotate integrally up and down around the rotation support shaft 9. doing. Supporting rods 51 project forward from these front portions. A grounding front wheel 52 is attached to the front end side of the support rod 51. The harvesting work device 3 (the extraction unit 11 and the conveyance unit 12), the foliage scraping device 16, and the divider 14 are supported by the front ground wheel 52 with respect to the farm scene.

  When the vehicle is not working or running on the road, the hydraulic cylinder 26 is extended and the parallel links 22 and 23 are turned upward, so that the lower side of the subsoiler body 25, the extraction unit 11, the foliage scraping device 16, and the divider 14 is placed in the field. Hold in a raised position that does not interfere with the surface. In the embodiment, the upper surface of the push-up rotary roller 53 provided on the side surface of the lower link 23 is configured to move along the lower surface of the L-shaped guide member 54 provided on the lower surface side of the extraction frame 11a. . For this reason, by driving the single hydraulic cylinder 26, the lower end side of the subsoiler body 25, the extraction portion 11, the foliage scraping device 16, and the divider 14 can be greatly lifted upward integrally from the field scene.

  Next, the details of the interlocking structure between the extraction unit 11 and the conveyance unit 12 will be described with reference to FIGS. 3 and 4. As described above, the extraction portion 11 includes the start end wheel 11b pair and the end end wheel 11c pair around which the extraction belt 11e is wound. The conveyance unit 12 includes a pair of start wheel 12b and a pair of end wheel 12c around which a conveyance belt 12e is wound. In the embodiment, the diameters of the wheels 11 b and 11 c of the extraction unit 11 are smaller than the diameters of the wheels 12 b and 12 c of the transport unit 12. The rotation shafts 61 of the left and right terminal wheels 11c in the pull-out portion 11 are interlocked and connected to the rotation shafts 62 of the left and right start end wheels 12b in the transport unit 12 via universal joint shafts 63 having universal joints at both ends.

  The power transmitted to the input unit (not shown) to each terminal wheel 12c of the transport unit 12 rotates the transport belt 12e pair via the terminal wheel 12c pair of the transport unit 12. Power is transmitted from the starting end wheel 12b pair of the conveying portion 12 driven and rotated by the conveying belt 12e pair to the terminal wheel 11c pair of the extracting portion 11 via the universal joint shaft 63, and the terminal wheel 11c pair of the extracting portion 11 is transmitted to the extracting belt 11e. Rotate the pair. That is, the power transmitted from the PTO output shaft 36 provided in the transmission 7 through a transmission mechanism such as a chain or a sprocket is transmitted to the extraction unit 11 through the transport unit 12.

  In this case, each terminal wheel 11c of the extraction unit 11 and each start wheel 12b of the conveyance unit 12 have different diameters. Therefore, the conveyance speed V1 of the extraction belt 11e pair and the conveyance speed V2 of the conveyance belt 12e pair are different from each other. There is a difference. In the embodiment, the diameter of each terminal wheel 11c of the extraction unit 11 is smaller than the diameter of each start wheel 12b of the conveyance unit 12, and the rotary shaft 61 on the extraction unit 11 side and the rotation shaft 62 on the conveyance unit 12 side are connected to a universal joint. Since the shafts 63 are interlocked and connected, the end wheels 11c of the pull-out portion 11 and the start end wheels 12b of the transport portion 12 rotate at substantially the same number of rotations (a slight attenuation is caused by the universal joint shaft 63). The conveying speed V2 of the pair of conveying belts 12e is faster than the conveying speed V1 of the pair of pulling belts 11e (V2> V1). Then, considering that the conveying belt 12e pair and the extraction belt 11e pair are rotationally driven by the power via the transmission 7, the conveyance speed V1 of the extraction belt 11e pair is synchronized with the moving speed V of the traveling machine body 1 ( V = V1 <V2). Each terminal wheel 11c of the extraction portion 11 is set so that the conveyance speed V2 of the pair of conveyance belts 12e is, for example, about 1.1 to 1.2 times the conveyance speed V1 (movement speed V of the traveling machine body 1) of the pair of extraction belts 11e. And the diameter of each starting end wheel 12b of the transport unit 12 are set (V2 = 1.1 to 1.2 × V1).

  In the above-described configuration, the harvesting work device 3 is configured such that when the root vegetables K in the field are pinched on the front end side of the pair of extraction belts 11e of the extraction part 11 and are extracted from the field, the inheritance located on the rear end side of the extraction part 11 The pair of drawing belts 11e sandwiches and conveys the root vegetables K toward the section 13. And in the inheritance part 13, the conveyance belt 12e pair of the conveyance part 12 clamps the upper side of the stem and leaf part KS of the root vegetables K, and the root vegetables K are inherited from the extraction part 11 to the conveyance part 12. The root vegetables K transferred from the drawing unit 11 to the conveyance unit 12 are further nipped and conveyed rearward by the pair of conveyance belts 12e, and are post-processed by the root hair cutting device 56 and the cutting device 44.

  When the above configuration is adopted, it is possible to set the conveyance speed V1 of the extraction unit 11 and the conveyance speed V2 of the conveyance unit 12 in accordance with the vegetation state of the root vegetables K and the work situation. Regardless of the vegetation state of the root vegetables K, etc., the accuracy of preparation such as root cutting and leaf cutting in the course of conveyance can be maintained high. Further, it is possible to make the entire length of the airframe shorter by tilting the transporting portion 12 obliquely upward and rearward at a steeper angle than the pulling portion 11 while keeping the pulling portion 11 laid down.

  In particular, in the embodiment, since the conveyance speed V2 of the conveyance unit 12 is set to be faster than the conveyance speed V2 of the extraction unit 11, when harvesting a plurality of vegetation root vegetables K on one persimmon, it is adjacent. Even if the root vegetables K that have been vegetated are overlapped and pulled out, the overlap can be separated and transported by the subsequent transport unit 12. Therefore, it is easy to maintain the accuracy of preparation such as root cutting and leaf cutting in the course of conveyance.

  In addition, the power transmission structure to the extraction part 11 and the conveyance part 12 is not restricted to the thing of the above-mentioned embodiment, The structure which transmits motive power directly from the engine 6 may be sufficient, and the structure using a hydraulic motor or an electric motor may be sufficient. Moreover, you may comprise so that motive power may be transmitted toward the conveyance part 12 from the extraction part 11, and the structure which drives the extraction part 11 and the conveyance part 12 each independently may be sufficient. When connecting the drawing unit 11 and the conveying unit 12 so as to be able to transmit power, not only the universal joint shaft 63 as in the embodiment is adopted, but also a belt pulley transmission system, a chain sprocket transmission system, or the like can be used. is there.

  FIG. 5 shows another example of the interlocking structure between the drawing unit 11 and the transport unit 12. In another example shown in FIG. 5, a ring gear portion 64 with internal teeth 65 is formed on the inner diameter side of the left and right end wheels 11 c in the extraction portion 11. On the other hand, a bevel gear 66 that always meshes with the inner teeth 65 of the ring gear portion 64 is attached to the lower end side of the rotation shaft 62 of the left and right starting end wheels 12b in the transport unit 12. Then, the conveying speed V1 of the pair of drawing belts 11e is synchronized with the moving speed V of the traveling machine body 1 as in the previous embodiment (V = V1 <V2). In addition, each ring gear in the extraction portion 11 is set so that the conveyance speed V2 of the conveyance belt 12e pair is, for example, about 1.1 to 1.2 times the conveyance speed V1 (movement speed V of the traveling machine body 1) of the extraction belt 11e pair. The relationship (gear ratio) between the number of teeth of the internal teeth 65 of the section 64 and the number of teeth of each bevel gear 66 of the transport section 12 is set (V2 = 1.1 to 1.2 × V1).

  Even when configured as another example, similar to the previous embodiment, when harvesting root vegetables K that have been vegetated in a single row, the root vegetables K that have been vegetated adjacent to each other are pulled out. Even so, the subsequent transport unit 12 can transport the overlap separately, and it is easy to maintain the accuracy of preparation such as root cutting and leaf cutting in the course of transport.

  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.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Harvesting work apparatus 11 Pull-out part 11b Starting end wheel 11c End wheel 11e Pulling belt 12 Conveying part 12b Starting end wheel 12c Ending wheel 12e Conveying belt 13 Passing part

Claims (4)

A pulling part that pulls out the stems and leaves of root vegetables vegetated in the field from the left and right, and a transport part that transports the root vegetables inherited from the pulling part backward,
Position the rear end side of the withdrawal part so as to overlap vertically below the front end of the transport part,
There is a speed difference between the transport speed of the pulling section and the transport speed of the transport section.
Root crop harvesting machine. It is set so that the conveyance speed of the conveyance part is faster than the conveyance speed of the extraction part.
The root vegetable harvester according to claim 1. It is equipped with a traveling machine body equipped with a pull-out part and a conveyance part,
The conveyance speed of the extraction part is synchronized with the moving speed of the traveling aircraft.
The root vegetable harvester according to claim 2. Each of the extraction unit and the conveyance unit includes a pair of left and right endless belts that sandwich and convey root vegetables,
It is set so that the clamping force of the endless belt pair in the pull-out part is larger than the clamping force of the endless belt pair in the transport part,
A root crop harvesting machine according to claim 2 or 3.

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