Work vehicle

Abstract

To solve a problem that usability in using a convenient function is not necessarily good in a conventional work vehicle and more specifically poor usability may be caused by largeness of a vehicle constitution size in a work vehicle such as a conventional carrot harvesting vehicle.SOLUTION: A two-line type carrot harvesting vehicle digs out and harvests crops on an inner side planting line and an outer side planting line, arranged side by side in a right / left direction, and includes: an inner side carrot digging-out mechanism 10a which digs out a crop on the inner side planting line and conveys the crop rear / upward; and an outer side carrot digging-out mechanism 10b which digs out a crop on the outer side planting line and conveys the crop rear / upward. An outer side carrot digging-out conveyance passage 12b of the outer side carrot digging-out mechanism 10b is bent to an outer side midway in the right / left direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to work vehicles, such as carrot harvesting vehicles. [Background technology]

[0002] A work vehicle such as a head vegetable harvester is known which has a self-propelled traveling carriage with an engine and left and right running bodies driven by the output rotation of the engine, and a left and right harvesting unit mounted on the traveling carriage, where the left harvesting unit has a left cutting blade arranged on the front left side of the traveling carriage and a left conveyor which transports the head vegetables cut by the left cutting blade toward the rear of the traveling carriage, and the right harvesting unit has a right cutting blade arranged on the front right side of the traveling carriage and a right conveyor which transports the head vegetables cut by the right cutting blade toward the rear of the traveling carriage, and further has a left rotation transmission path which transmits the rotation transmitted to the left running body to the left conveyor at a predetermined speed ratio, and a right rotation transmission path which transmits the rotation transmitted to the right running body to the right conveyor at a predetermined speed ratio (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-148819 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the present inventor believes that the trend of implementing convenient functions one after another in work vehicles such as carrot harvesting vehicles will continue to accelerate, taking into consideration the various needs of work vehicle users.

[0005] However, the present inventors have noticed that conventional work vehicles are not necessarily easy to use when using convenient functions.

[0006] More specifically, the present inventors have noticed that there is a concern that with work vehicles such as conventional carrot harvesting vehicles, the increased size of the vehicle configuration can lead to poor usability.

[0007] SUMMARY OF THE PRESENT DISCLOSURE In consideration of the above-mentioned problems with the conventional technology, an object of the present invention is to provide a work vehicle that can improve usability. [Means for solving the problem]

[0008] The first aspect of the present invention is a two-row work vehicle that digs up and harvests crops in inner and outer planting rows that are aligned in the left-right direction, an inner crop digging mechanism that digs up the crops in the inner planting row and transports them rearward and upward; an outer crop digging mechanism that digs up the crops in the outer planting rows and transports them rearward and upward; It is equipped with This is a work vehicle characterized in that the outer crop digging mechanism transport path of the outer crop digging mechanism is bent midway toward the outside in the left-right direction.

[0009] A second invention is a work vehicle according to the first invention, characterized in that a front end portion of the outer crop digging mechanism of the outer crop digging mechanism is positioned further forward than a front end portion of the inner crop digging mechanism of the inner crop digging mechanism.

[0010] The third aspect of the present invention is an inner crop stem and leaf cutting device that cuts the stems and leaves of the crop of the inner planting row that has been transported rearward and upward by the inner crop digging mechanism; an outer crop stem and leaf cutting device that cuts the stems and leaves of the crops of the outer planting row that have been transported rearward and upward by the outer crop digging mechanism; It is equipped with The work vehicle according to the second aspect of the present invention is characterized in that the outer crop stem and leaf cutting device is arranged to be aligned with the inner crop stem and leaf cutting device in the left-right direction.

[0011] The fourth aspect of the present invention is a cleaner belt device having a single cleaner belt, into which the crop bodies of the inner planting row and the outer planting row fall from above after the stems and leaves are cut; an inner crop cleaner roller disposed on an upper surface of the cleaner belt for removing residual leaves from the body of the crop of the inner planting row; an outer crop cleaner roller disposed on an upper surface of the cleaner belt for removing residual leaves from the body of the crop of the outer planting row; Equipped with In a third aspect of the present invention, there is provided a work vehicle, wherein the inner crop cleaner roller and the outer crop cleaner roller are disposed obliquely with respect to a belt conveying direction of the cleaner belt.

[0012] The fifth invention is the work vehicle of the fourth invention, characterized in that the inner crop cleaner roller and the outer crop cleaner roller are arranged in parallel at a distance greater than the distance between the inner planting row and the outer planting row.

[0013] The sixth aspect of the present invention provides a residual leaf discharge unit having a single residual leaf discharge outlet for discharging the residual leaves removed from the main body of the crop of the inner planting row and the outer planting row, The fifth aspect of the present invention is a work vehicle, wherein the residual leaf discharge outlet is disposed downstream of the cleaner belt.

[0014] The seventh aspect of the present invention is a method for cutting a crop stem and leaf of the inner planting row and an outer planting row, the method comprising the steps of: (a) cutting the stem and leaf of the inner planting row and an outer planting row; (b) providing a guide cup for guiding the main body of the crop of the inner planting row downwardly after the stem and leaf are cut; and (c) providing a guide cup immediately below the inner crop stem and leaf cutting device and the outer crop stem and leaf cutting device, respectively; A sixth work vehicle of the present invention is characterized in that a notch is provided on the front edge portion of the guide cup so that the crop being transported to the inner crop stem and leaf cutting device and the outer crop stem and leaf cutting device does not collide with the guide cup. Effect of the Invention

[0015] According to the first aspect of the present invention, it is possible to improve usability.

[0016] According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, it is possible to further improve usability.

[0017] According to the third aspect of the present invention, in addition to the effect of the second aspect of the present invention, it is possible to improve convenience.

[0018] According to the fourth aspect of the present invention, in addition to the effects of the third aspect of the present invention, it is possible to further improve convenience.

[0019] According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, it is possible to reduce the burden on the worker.

[0020] According to the sixth aspect of the present invention, in addition to the effect of the fifth aspect of the present invention, it is possible to simplify the configuration.

[0021] According to the seventh aspect of the present invention, in addition to the effect of the sixth aspect of the present invention, it is possible to further reduce the burden on the worker. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a plan view of a carrot harvesting vehicle according to an embodiment of the present invention; [Diagram 2] FIG. 1A is a front view of a carrot harvesting vehicle according to an embodiment of the present invention; FIG. 1B is a rear view of the carrot harvesting vehicle according to an embodiment of the present invention. [Diagram 3] FIG. 1A is a left side view of a carrot harvesting vehicle according to an embodiment of the present invention; FIG. 1B is a right side view of the carrot harvesting vehicle according to an embodiment of the present invention; [Figure 4](a) A schematic perspective view (part 1) of the vicinity of a guide cup of a carrot harvesting vehicle according to a modified embodiment of the present invention, (b) a schematic perspective view (part 2) of the vicinity of a guide cup of a carrot harvesting vehicle according to a modified embodiment of the present invention, and (c) a schematic perspective view (part 3) of the vicinity of a guide cup of a carrot harvesting vehicle according to a modified embodiment of the present invention. [Diagram 5] FIG. 1 is an explanatory diagram of the automatic lifting load cell configuration of the movable conveyor of the carrot harvesting vehicle according to an embodiment of the present invention. [Figure 6] FIG. 1 is an explanatory diagram of the configuration of a movable conveyor automatic lift sensor unit of a carrot harvesting vehicle according to an embodiment of the present invention. [Figure 7] FIG. 1 is an explanatory diagram of an automatic lifting function of a harvester conveyor of a carrot harvesting vehicle according to an embodiment of the present invention (part 1) [Figure 8] (a) An explanatory diagram (part 2) of the configuration of the automatic harvester conveyor lifting function of a carrot harvesting vehicle according to an embodiment of the present invention; (b) An explanatory diagram (part 3) of the configuration of the automatic harvester conveyor lifting function of a carrot harvesting vehicle according to an embodiment of the present invention; (c) An explanatory diagram (part 4) of the configuration of the automatic harvester conveyor lifting function of a carrot harvesting vehicle according to an embodiment of the present invention; (d) An explanatory diagram (part 5) of the configuration of the automatic harvester conveyor lifting function of a carrot harvesting vehicle according to an embodiment of the present invention. [Figure 9] FIG. 1A is an explanatory diagram (part 1) of a configuration for facilitating crane loading and unloading of a carrot harvesting vehicle according to an embodiment of the present invention; FIG. 1B is an explanatory diagram (part 2) of a configuration for facilitating crane loading and unloading of a carrot harvesting vehicle according to an embodiment of the present invention; [Figure 10] (a) An explanatory diagram (part 1) of a configuration of a soil removing brush of a carrot harvester of a carrot harvesting vehicle according to an embodiment of the present invention, (b) An explanatory diagram (part 2) of a configuration of a soil removing brush of a carrot harvesting vehicle according to an embodiment of the present invention, (c) An explanatory diagram (part 3) of a configuration of a soil removing brush of a carrot harvester of a carrot harvesting vehicle according to an embodiment of the present invention [Figure 11] FIG. 1 is an explanatory diagram of the stem and leaf cutting configuration of the leaf discharge section of the carrot harvesting vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the drawings, an embodiment of the present invention will be described in detail.

[0024] The same applies below, but some components may not be shown in the drawings, or may be shown in a perspective or simplified manner.

[0025] While explaining the operation of the carrot harvesting vehicle of this embodiment, we will also explain a work vehicle operation control method of an invention related to the present invention, which is realized by a controller, etc.

[0026] The carrot harvesting vehicle of this embodiment is a two-row carrot harvesting vehicle that digs up and harvests carrots in an inner planting row and an outer planting row that are aligned in the left-right direction, and is a specific example of a work vehicle in the present invention. Carrots in this embodiment are a specific example of a crop in the present invention.

[0027] (1) First, with reference to Figures 1, 2(a) and 2(b), and 3(a) and 3(b), the configuration and operation of a carrot harvesting vehicle according to an embodiment of the present invention will be specifically described.

[0028] Here, Figure 1 is a plan view of a carrot harvesting vehicle of an embodiment of the present invention, Figure 2(a) is a front view of a carrot harvesting vehicle of an embodiment of the present invention, Figure 2(b) is a rear view of a carrot harvesting vehicle of an embodiment of the present invention, Figure 3(a) is a left side view of a carrot harvesting vehicle of an embodiment of the present invention, and Figure 3(b) is a right side view of a carrot harvesting vehicle of an embodiment of the present invention.

[0029] We will now specifically explain aspects related to the carrot digging, clamping and transporting configuration, which is important in the carrot harvester flexible container specifications.

[0030] The inventor noticed that in a vegetable harvester capable of two-row operation, in which the left and right harvesting units are separated and the power is transmitted at the respective operating speed ratios, good operation is expected when the crop sizes are different between the left and right, but when the crop sizes are the same between the left and right, there is a concern that the size of the vehicle configuration will become large when multiple rows are operated. In the carrot harvesting vehicle of this embodiment, as described later, a bend is formed midway in the outer carrot digging mechanism conveying path 12b, so that the vehicle configuration can be made compact in a simple manner.

[0031] The inner carrot digging mechanism 10a is a mechanism that digs up carrots from the inner planting rows and transports them upward and rearward. The outer carrot digging mechanism 10b is a mechanism that digs up carrots from the outer planting rows and transports them upward and rearward.

[0032] The configurations of the inner carrot digging mechanism 10a and the outer carrot digging mechanism 10b are similar to each other.

[0033] The outer carrot digging-up mechanism transport path 12b of the outer carrot digging-up mechanism 10b is bent midway toward the outside in the left-right direction.

[0034] The outer carrot digging mechanism conveying path 12b of the outer carrot digging mechanism 10b, which functions as the outermost carrot digging clamping conveying mechanism of the so-called high-speed two-row digging, is bent so as to be curved in the middle. In order to be able to dig up carrots that fit between the rows planted in the field without any problems, the carrots of the outer planting row are conveyed obliquely by utilizing the bend formed in the middle of the conveying path while maintaining the position of the digging part of the outer planting row. This ensures ample layout space, and with a compact vehicle configuration, conveying and feeding to the inner carrot tapping device 101 and the outer carrot tapping device 102, as well as the inner carrot stem and leaf cutting device 20a and the outer carrot stem and leaf cutting device 20b can be performed independently for each of the inner planting row and the outer planting row.

[0035] The front end 11b of the outer carrot digging mechanism 10b is located forward compared to the front end 11a of the inner carrot digging mechanism 10a.

[0036] The outer carrot digging mechanism 10b, which functions as the outermost carrot digging, clamping and transporting mechanism, is positioned, for example, shifted forward by a distance that allows one carrot to pass through. This ensures sufficient layout space. Furthermore, even if the digging devices of the outer planting rows are independently moved up and down during digging work, there is often little effect on the digging height.

[0037] The outer carrot digging mechanism 10b is arranged in a layout that includes the pivot point for raising and lowering the digging mechanism, and is shifted forward as described above. This allows for more space in the layout, and the inner carrot digging mechanism 10a and the outer carrot digging mechanism 10b can use the same size parts as the digging frame and other large parts.

[0038] The inner carrot stem and leaf cutting device 20a is a device that cuts the stems and leaves of carrots in the inner planting row that have been transported rearward and upward by the inner carrot digging mechanism 10a. The outer carrot stem and leaf cutting device 20b is a device that cuts the stems and leaves of carrots in the outer planting row that have been transported rearward and upward by the outer carrot digging mechanism 10b.

[0039] The inner carrot stem and leaf cutting device 20a and the outer carrot stem and leaf cutting device 20b have similar configurations to each other.

[0040] The outer carrot stem and leaf cutting device 20b is arranged next to the inner carrot stem and leaf cutting device 20a in the left-right direction.

[0041] The cutting position of the outer carrot stem and leaf cutting device 20b is arranged in parallel with the cutting position of the inner carrot stem and leaf cutting device 20a in the left-right direction. Therefore, the stem and leaf cutting can be performed independently for the inner planting row and the outer planting row, so the stem and leaf cutting accuracy is high.

[0042] The inner carrot tapping device 101 is positioned slightly behind the outer carrot tapping device 102, and the inner carrot leaf ejection device 103 is positioned slightly forward compared to the outer carrot leaf ejection device 104, but these devices are all arranged in parallel. Therefore, the accuracy of cutting the stems and leaves in two-row digging is almost not deteriorated at all compared to the accuracy of cutting the stems and leaves in single-row digging.

[0043] The cleaner belt device 30 is a device having a single cleaner belt 31 along which the carrot bodies of the inner planting row and the outer planting row fall from above after the stems and leaves have been cut.

[0044] The cleaner belt 31 for the inner planting row and the outer planting row, in which the inner carrot cleaner roller 40a and the outer carrot cleaner roller 40b are arranged diagonally, is a single belt that is sufficiently wide in the left-right direction. Therefore, by sharing the cleaner belt 31, the number of parts is reduced.

[0045] The inner carrot cleaner roller 40a is a roller disposed on the upper surface of the cleaner belt 31 for removing residual leaves from the carrot bodies of the inner planting rows. The outer carrot cleaner roller 40b is a roller disposed on the upper surface of the cleaner belt 31 for removing residual leaves from the carrot bodies of the outer planting rows.

[0046] The construction of the inner carrot cleaner roller 40a and the outer carrot cleaner roller 40b are similar to each other.

[0047] The inner carrot cleaner roller 40a and the outer carrot cleaner roller 40b are disposed obliquely with respect to the belt conveying direction of the cleaner belt 31.

[0048] The outer carrot cleaner roller 40b is arranged in parallel with the inner carrot cleaner roller 40a in the left-right direction. Therefore, carrots can be introduced into the cleaner independently for the inner planting row and the outer planting row, so that the so-called lower leaf processing accuracy of the two-row digging does not deteriorate at all compared to the lower leaf processing accuracy of the single-row digging.

[0049] The inner carrot cleaner roller 40a and the outer carrot cleaner roller 40b are arranged parallel to each other at a distance greater than the distance between the inner and outer planting rows.

[0050] After the stems and leaves are cut, the carrot bodies of the outer planting rows fall from above. However, since the inner carrot cleaner roller 40a and the outer carrot cleaner roller 40b are positioned at a sufficiently large distance apart, the falling carrot bodies of the outer planting rows are unlikely to interfere with the cleaning process of the inner carrot cleaner roller 40a.

[0051] The residual leaf discharge unit 50 is a unit having a single residual leaf discharge port 51 for discharging residual leaves removed from the carrot bodies of the inner planting row and the outer planting row.

[0052] The belt sharing by the cleaner belt 31 realizes a layout in which only one waste discharge outlet is provided, and therefore it is expected that the configuration will be simplified by reducing the number of cleaner waste processing outlets.

[0053] The remaining leaf discharge port 51 is disposed on the downstream side of the cleaner belt 31.

[0054] The carrot bodies of the inner and outer planting rows, from which the remaining leaves have been removed, are discharged onto a single movable conveyor device 105 that utilizes a single conveyor belt that is sufficiently wide in the left-right direction, allowing sorters to work easily without having to change their working position. This makes it possible to realize a configuration that can efficiently process two rows of carrots, the inner and outer planting rows, without the sorter having to move around significantly, at a low cost.

[0055] (2) Next, the configuration and operation of the carrot harvesting vehicle according to the embodiment of the present invention will be described in more detail with reference mainly to Figures 4(a) to 4(c).

[0056] Here, Figs. 4(a) to 4(c) are schematic perspective views (parts 1 to 3) of the vicinity of a guide cup 60 of a carrot harvesting vehicle according to a modified embodiment of the present invention.

[0057] (2A) An embodiment relating to an automatic sorting configuration for carrots will be specifically described.

[0058] After the stems and leaves are cut, guide cups 60 for guiding the carrot bodies of the inner planting row and the outer planting row downward are provided directly below the inner carrot stem and leaf cutting device 20a and the outer carrot stem and leaf cutting device 20b, respectively.

[0059] 4(a) to 4(c), the guide cup 60 is disposed closer to the front of the vehicle body than the carrot stem and leaf cutting blades 201 of the inner carrot stem and leaf cutting device 20a and the outer carrot stem and leaf cutting device 20b. After the stems and leaves are cut, the carrot bodies may be pushed back toward the front of the vehicle body, which helps prevent the carrots from spilling out.

[0060] Thus, the guide cup 60 is a funnel-shaped guide member that is provided at a position where the carrots will fall immediately after the stems and leaves are cut.

[0061] (2B) An embodiment relating to the automatic sorting configuration of ginseng main body will be described in more detail.

[0062] A notch 61 is provided in the front edge 62 of the guide cup 60 so that carrots conveyed to the inner carrot stem and leaf cutting device 20a and the outer carrot stem and leaf cutting device 20b do not collide with the guide cup 60.

[0063] 4(b) and 4(c), the front edge 62 of the guide cup 60 is provided with a notch 61, so that the carrots are less likely to be damaged when colliding with the guide cup 60. This is expected to improve the quality of the carrots.

[0064] 4(b) and 4(c), an upstream sensor 202 and a downstream sensor 203 are provided inside the guide cup 60. By detecting abnormalities based on omnidirectional imaging of the harvested carrots, the quality can be comprehensively determined, which promotes an accurate sorting process, as described later.

[0065] Thus, the upstream sensor 202 and the downstream sensor 203 provided inside the guide cup 60 are imaging devices that can perform measurements for sorting carrots based on size, color, shape, etc.

[0066] (2C) An embodiment relating to an automatic sorting configuration for ginseng main body will now be described in more detail.

[0067] As shown in Fig. 4(c), two rows of cleaner belts 31 are used to separate carrots according to their quality, but the cleaner belt drive unit is shared between the two rows. This simplifies the configuration and reduces the number of parts, which is expected to lead to cost reduction.

[0068] In this way, two cleaner belts 31 are provided to form a so-called double belt unit, and the carrots flowing in the conveying direction are sorted based on information obtained from the images by utilizing partial movement of the partition plates of the central partition unit 204.

[0069] The guide cups 60 are arranged so that the carrots fall onto only one of the two rows of cleaner belts 31 provided on one side.

[0070] A partition unit 204 is provided between the two rows of cleaner belts 31. Not only is interference between the two rows of cleaner belts 31 suppressed, but carrots are hardly moved across the partition unit 204, so that carrots removed in the sorting process are less likely to mix with carrots that were not removed.

[0071] Outer wall panel units 205 similar to the partition panel unit 204 are provided on both outer sides in the front-rear direction of the two rows of cleaner belts 31. Carrots are prevented from falling out of the cleaner belts 31.

[0072] The partition unit 204 is formed with an upstream gap 206 and a downstream gap 207 through which the carrots pass.

[0073] Upstream gap 206 is the gap closer to guide cup 60, and downstream gap 207 is the gap farther from guide cup 60. When an abnormality is detected by upstream sensor 202, the carrots are removed from upstream gap 206. When an abnormality is detected by downstream sensor 203, the carrots are removed from downstream gap 207.

[0074] When an abnormality is detected by upstream sensor 202, upstream rotating plate 208, provided using exterior panel unit 205 at the front of the vehicle body, is driven by a rotating mechanism actuator toward cleaner belt 31, thereby removing the carrots from upstream gap 206. When an abnormality is detected by downstream sensor 203, downstream rotating plate 209, provided using exterior panel unit 205 at the front of the vehicle body, is driven by a rotating mechanism actuator toward cleaner belt 31, thereby removing the carrots from downstream gap 207. When an abnormality is detected, using upstream rotating plate 208 and downstream rotating plate 209, the carrots are almost certainly moved from the cleaner belt 31 on which guide cup 60 is located to the adjacent cleaner belt 31.

[0075] A downstream gap rotating plate 210 driven by a rotating mechanism actuator is provided in the downstream gap 207 with a length such that the tip of the plate rotates to overlap with the partition plate unit 204. Backflow of carrots from the cleaner belt 31 where no guide cup 60 is provided is almost certainly prevented.

[0076] Since the output of the pivot mechanism actuator of the upstream pivot plate 208 is greater than the output of the pivot mechanism actuator of the downstream pivot plate 209, the carrot is almost certainly moved from the cleaner belt 31 where the guide cup 60 is located to the adjacent cleaner belt 31 while pushing the downstream gap pivot plate 210.

[0077] The plate rotation tips of the upstream side rotating plate 208 and the downstream side rotating plate 209 are rounded, which can prevent the plates from being damaged due to contact with the carrots and the partition unit 204.

[0078] The upstream side rotating plate 208 and the downstream side rotating plate 209 are attached so as to rotate at a position higher than the cleaner belt 31. This makes it possible to suppress the occurrence of plate interference due to contact with the cleaner belt 31.

[0079] The lower edge of the guide cup 60 is cut out so as not to come into contact with the cleaner belt 31. This not only prevents cup interference caused by contact with the cleaner belt 31, but also prevents carrots from clogging the cup.

[0080] (3) Next, the configuration and operation of the carrot harvesting vehicle according to the embodiment of the present invention will be described in more detail.

[0081] (3A) A specific embodiment relating to the movable conveyor automatic lift load cell configuration will be described.

[0082] As shown in Fig. 5, which is an explanatory diagram of the automatic lifting load cell configuration of the movable conveyor of the carrot harvesting vehicle according to the embodiment of the present invention, a bucket placement platform 301 located on the downstream side of the movable conveyor device 105 may have two bucket plates 302 stacked vertically. Since the two bucket plates 302 are stacked, the strength can be maintained.

[0083] The two bucket plates 302 are attached coaxially using a single attachment portion. The common attachment portion reduces the number of parts, and the configuration can be simplified.

[0084] A so-called compression type load cell 303 is mounted between the two bucket plates 302 .

[0085] Every time a predetermined time has elapsed, the average value of the detection values ​​of a total of five load cells 303 arranged at the center and four corners of the bucket plate 302 is input to the controller as load cell data. By using such an average value, the data is optimized, so there is almost no effect of variations in the detection data due to detection errors, etc.

[0086] Based on the load cell data described above, a control signal for the conveyor lifting cylinder is output so that the movable conveyor device 105 is automatically lifted. No auxiliary work is required for lifting and lowering the conveyor, and so-called one-operation is realized, which means that even a single worker can easily harvest carrots.

[0087] In this manner, the load of carrots placed on bucket placement table 301 is measured by load cell 303, and movable conveyor device 105 is automatically raised by a predetermined amount as the load increases.

[0088] (3B) A specific embodiment regarding the configuration of the movable conveyor automatic lift sensor unit will be described.

[0089] As shown in Fig. 6, which is an explanatory diagram of the configuration of the movable conveyor automatic lift sensor unit of the carrot harvesting vehicle according to the embodiment of the present invention, a sensor unit 401 for counting the number of conveyed carrots may be attached near the conveyor outlet of the movable conveyor device 105. Since the number of conveyed carrots is specified, a user-friendly specification is realized.

[0090] The weight of the harvested carrots, which is necessary for accurate carrot image recognition, is input in advance to the controller from outside.

[0091] Conveyor grooves 402, in which the conveying direction of the carrots is the longitudinal direction of the groove, are formed in the conveyor belt of movable conveyor device 105. Since the carrots are lined up along the direction of conveyor grooves 402, it is expected that image recognition of each individual carrot will be performed without error, improving the accuracy of carrot image recognition.

[0092] The weight of the harvested carrots is calculated as a total weight based on the number of carrots delivered and the weight of the carrot crop. Not only the number of carrots harvested but also the total weight of the harvested carrots is visualized as a concrete figure in real time.

[0093] Based on the calculated total weight of the carrots, the movable conveyor device 105 is automatically raised according to a preset value. Carrot harvesting can be easily performed by a single worker, thus realizing labor saving.

[0094] When the elevation position of the movable conveyor device 105 is set to the initial position, the count of the total weight of the harvested carrots is reset. This improves convenience because the shift to the next task can be smoothly performed without a reset operation.

[0095] The sensor unit mounting stay 403 of the sensor unit 401 can be moved as necessary. Since the sensor unit 401 is unlikely to get in the way, it is expected that good operability will be ensured.

[0096] In this way, the sensor unit 401 as a piece counting device provided at the conveyor exit of the movable conveyor device 105 may be used to calculate the average weight of one carrot, and the movable conveyor device 105 may be raised by a predetermined amount when a predetermined number of carrots or weight of carrots is reached. When the predetermined number of carrots is exceeded, an audio alert or the like may be issued to prompt the replacement of the carrot harvester flexible container, also called a carrot bag, prior to resetting the counter. In the two-row operation, there may be a discrepancy in the operation timing of the inner planting row and the outer planting row, and the load of the harvested carrots does not necessarily increase periodically. Therefore, it is desirable to perform highly accurate measurements by employing not only the load cell 303 but also the sensor unit 401 as a piece counting device.

[0097] (3C) A specific description will be given of aspects relating to the automatic lifting function configuration of the harvester conveyor.

[0098] As shown in Figure 7, which is an explanatory diagram (part 1) of the harvester conveyor automatic raising function configuration of a carrot harvesting vehicle in an embodiment of the present invention, along with a monitor for real-time weight display, a toggle switch is provided for switching between three levels: automatic conveyor raising off, automatic conveyor raising at normal speed on, and automatic conveyor raising at high speed on, and the conveyor is automatically raised according to the harvest amount of carrots stored in the carrot harvester flexible container, also called a carrot bag.

[0099] That is, a configuration is conceivable in which an automatic conveyor raising function is implemented for the movable conveyor device 105 in the carrot harvesting vehicle. The assistant worker performing the sorting work can concentrate on the sorting work without being bothered by the conveyor raising and lowering operation.

[0100] In the embodiment described above, the automatic harvester conveyor raising function of the movable conveyor system 105 can be switched on and off by the operation of a switch.

[0101] In the above-mentioned embodiment, the movable conveyor device 105 is automatically raised according to the weight of the carrots contained in the flexible container of the carrot harvester. The movable conveyor device 105 is raised while reliably following the harvest amount, regardless of the speed of the work and the size of the carrots, and the carrot harvesting vehicle can be automatically operated.

[0102] As shown in Figures 8(a) to 8(d), which are explanatory diagrams (parts 2 to 5) of the automatic lifting function configuration of the harvester conveyor of a carrot harvesting vehicle in an embodiment of the present invention, the harvest yield of carrots is measured by a strain gauge 501 attached to the base of the bucket using a frame square pipe 503, the deployed bucket state is a plate abutment state in which weight is measured according to the abutment strain of the abutment plate member 502 provided on the bucket side, and the bucket stored state is a plate non-abutment state.

[0103] That is, in the above-described embodiment, a configuration in which the container weight is measured by strain gauge 501 is considered.

[0104] In the embodiment described above, the strain gauge 501 is provided in the vicinity of the bucket rotation fulcrum of the bucket mounting table 301 .

[0105] In the above-mentioned embodiment, the weight of the carrots is calculated as an average weight value over a predetermined period of time, for example, a sampling average value over a period of one second can be used to reduce the influence of variations in the measurement value due to vehicle vibration.

[0106] In the embodiment described above, the automatic conveyor rise speed is varied in response to the weight gain value in a predetermined period of time.

[0107] (3D) Aspects relating to the crane loading / unloading facilitation configuration will be specifically described.

[0108] As shown in Figures 9(a) and 9(b), which are explanatory diagrams (parts 1 and 2) of a configuration for facilitating crane loading and unloading of a carrot harvesting vehicle according to an embodiment of the present invention, a configuration is conceivable in which, when an operating switch 603 provided on the side of an operator's seat 601 or an assistant operator's seat 602 functioning as an operating seat is pressed, the movable conveyor device 105 is raised, the hanger arm 604 is extended, the movable conveyor device 105 is lowered, and the movable conveyor device 105 and the hanger arm 604 are moved to a carrot bag attachment position. A series of operations can be instructed only by the operating switch 603, which promotes simplification of operations.

[0109] It is possible to consider a mode in which a series of operations can be instructed by the operation switch 603 only when the parking brake is on. This is expected to improve safety.

[0110] A long hole 606 that functions as a so-called slack removal long hole is formed in the center of the hanger 605, and a limit switch 607 provided near the long hole 606 is turned on when the hanger 605 comes into contact with the hanger arm 604 as the hanger 605 is pushed up, thereby stopping the lowering of the cargo. Since the lowering of the cargo is automatically stopped when the hanger 605 is pushed up by the cargo touching the ground, excessive lowering of the cargo is unlikely to occur.

[0111] When the load is removed by the carrot bag removal operation of the hanger hook 609, the hanger 605 hangs down by its own weight, the limit switch 607 is turned off again, and the movable conveyor device 105 and the hanger arm 604 are automatically moved to the carrot bag attachment position. The automatic movement to the carrot bag attachment position is expected to simplify the work.

[0112] Since the movable conveyor device 105 and the hanger arm 604 may be returned to the carrot bag attachment position even if the carrot bag removal operation is not completed, an embodiment is conceivable in which the automatic movement to the carrot bag attachment position described above is performed only when the push switch 608 is pressed. The push switch 608 provided near at least one hanger hook 609 is easy to operate, and safety is improved with a user-friendly configuration.

[0113] In order to further improve safety, it is possible to consider an embodiment in which automatic movement to the above-mentioned ginseng bag attachment position is performed only when not only the push switch 608 but also the operation switch 603 is pressed. By using the operation switch 603 for general purposes, it is expected that the number of parts will be reduced, leading to cost reduction.

[0114] By providing an operation panel or the like with a counter for measuring the number of times the limit switch 607 is turned on, the number of times the carrot bag is removed each time the carrot bag becomes full with harvest can be detected, and the approximate harvest yield can be calculated.

[0115] (3E) A specific description will be given of an aspect relating to the configuration of the soil removing brush of the carrot harvester.

[0116] As shown in Figures 10(a) to 10(c), which are explanatory diagrams (parts 1 to 3) of the soil-removing brush configuration of the carrot harvester of the carrot harvesting vehicle according to an embodiment of the present invention, a cylindrical brush 702 is provided in conjunction with a clamping and transporting section 701, and after the soil has been removed by the cylindrical brush 702, the carrots are transported by a movable conveyor device 105.

[0117] That is, the cylindrical brush 702 is attached to the clamping and conveying part 701 of the inner carrot digging mechanism 10a and the outer carrot digging mechanism 10b, and the cylindrical brush 702 may have a cylindrical shape. Each carrot can be washed in its entirety.

[0118] In the above-mentioned embodiment, the cylindrical brush 702 rotates in conjunction with the nipping and conveying belt, and not only can each carrot be washed in its entirety, but also all the carrots can be washed without any leakage.

[0119] In the embodiment described above, the cylindrical brush 702 is provided closer to the front of the vehicle body than the movable conveyor device 105. Since soil caused by soil removal by the cylindrical brush 702 is less likely to enter the movable conveyor device 105, the work time required for conveyor maintenance, etc. can be reduced.

[0120] (3F) The aspects relating to the stem and leaf cutting configuration of the leaf discharge section will be specifically explained.

[0121] As shown in Figure 11, which is an explanatory diagram of the stem and leaf cutting configuration of the leaf discharge section of a carrot harvesting vehicle in an embodiment of the present invention, the cutter blade member 803 is rotated by utilizing the driving force extracted via a pair of shaft members 802 extending downward from the drive units of the leaf discharge sections 801 of the inner carrot leaf discharge device 103 and the outer carrot leaf discharge device 104.

[0122] That is, a configuration is conceivable in which the falling stems and leaves of carrots are cut by a rotating cutter blade member 803.

[0123] Three cutter blade members 803 are attached to a drive shaft of a single shaft member 802 .

[0124] The size of the blades of the three cutter blade members 803 increases from the top to the bottom.

[0125] The cover member 804 is attached so as to cover the blade of the cutter blade member 803 and the drive shaft of the shaft member 802, so that leaves and stems almost never wrap around the cutter blade member 803 and the shaft member 802. This effect of preventing leaves and stems from wrapping around the cutter blade member 803 and the shaft member 802 improves safety.

[0126] The outer surface of the cover member 804 on the side where the stems and leaves pass is inclined so that the stems and leaves can easily fall without getting caught on the cover member 804. This effect of preventing the stems and leaves from getting caught further improves safety.

[0127] In addition, the program of the invention related to the present invention is a program for causing a computer to execute all or part of the steps (or processes, operations and actions, etc.) of the work vehicle operation control method of the invention related to the present invention described above, and is a program that operates in cooperation with a computer.

[0128] In addition, the recording medium of the invention related to the present invention is a recording medium having recorded thereon a program for causing a computer to execute all or part of the operations of all or part of the steps (or processes, operations and actions, etc.) of the work vehicle operation control method of the invention related to the present invention described above, and is a computer-readable recording medium in which the read program is used in cooperation with a computer.

[0129] In addition, the above-mentioned "some steps (or processes, operations, actions, etc.)" means one or some steps among the multiple steps.

[0130] Furthermore, the above-mentioned "operation of a step (or process, operation, action, etc.)" means the operation of all or a part of the above-mentioned steps.

[0131] Furthermore, one mode of use of the inventive program related to the present invention may be in the form of being transmitted through a transmission medium such as the Internet, light, radio waves, or sound waves, being read by a computer, and operating in cooperation with the computer.

[0132] Furthermore, the recording medium includes a ROM (Read Only Memory) and the like.

[0133] Furthermore, a computer is not limited to pure hardware such as a CPU (Central Processing Unit), and may also include firmware, an OS (Operating System), and even peripheral devices.

[0134] As described above, the configuration of the present invention may be realized in software or in hardware. [Industrial Applicability]

[0135] The work vehicle of the present invention can improve usability and is useful for use as a work vehicle such as a carrot harvesting vehicle. [Explanation of symbols]

[0136] 10a Inner carrot digging mechanism 10b Outer carrot digging mechanism 11a Front end of inner carrot digging mechanism 11b Front end of outer carrot digging mechanism 12b Outer ginseng digging mechanism conveyance path 20a Inner carrot stem and leaf cutting device 20b Outer carrot stem and leaf cutting device 30 Cleaner belt device 31 Cleaner Belt 40a Inner Carrot Cleaner Roller 40b Outer Carrot Cleaner Roller 50 Leaf Removal Unit 51 Leftover leaf outlet 60 Guide Cup 61 Notch 62 Front edge 101 Inner Carrot Tapping Device 102 External carrot tapping device 103 Internal ginseng leaf removal device 104 External ginseng leaf removal device 105 Movable conveyor device 201 Carrot stem and leaf cutting blade 202 Upstream Sensor 203 Downstream Sensor 204 Partition unit 205 Exterior wall panel unit 206 Upstream Gap 207 Downstream gap 208 Upstream rotating plate 209 Downstream rotating plate 210 Downstream gap pivot plate 301 Bucket stand 302 Bucket plate 303 Load Cell 401 Sensor unit 402 Conveyor groove 403 Sensor unit mounting bracket 501 Strain Gauge 502 Contact plate member 503 Frame Square Pipe 601 Pilot seat 602 Auxiliary operator seat 603 Operation switch 604 Hanger Arm 605 Hanger 606 long hole 607 Limit Switch 608 Push Switch 609 Hanger Hook 701 Clamping and conveying section 702 Cylindrical Brush 801 Leaf removal part 802 Shaft parts 803 Cutter blade parts 804 Cover material

Claims

1. A two-row work vehicle that digs up and harvests crops in inner and outer planting rows that are arranged in the left-right direction, an inner crop digging mechanism that digs up the crops in the inner planting row and transports them rearward and upward; an outer crop digging mechanism that digs up the crops in the outer planting rows and transports them rearward and upward; It is equipped with A work vehicle characterized in that the outer crop digging mechanism transport path of the outer crop digging mechanism is bent midway toward the outside in the left-right direction.

2. 2. The work vehicle according to claim 1, wherein a front end portion of the outer crop digging mechanism of the outer crop digging mechanism is located further forward than a front end portion of the inner crop digging mechanism of the inner crop digging mechanism.

3. an inner crop stem and leaf cutting device that cuts the stems and leaves of the crop of the inner planting row that has been transported rearward and upward by the inner crop digging mechanism; an outer crop stem and leaf cutting device that cuts the stems and leaves of the crops of the outer planting row that have been transported rearward and upward by the outer crop digging mechanism; It is equipped with 3. The work vehicle according to claim 2, wherein the outer crop stem and leaf cutting device is arranged to be aligned with the inner crop stem and leaf cutting device in the left-right direction.

4. a cleaner belt device having a single cleaner belt onto which the crop bodies of the inner planting row and the outer planting row fall from above after the stems and leaves are cut; an inner crop cleaner roller disposed on an upper surface of the cleaner belt for removing residual leaves from the body of the crop of the inner planting row; an outer crop cleaner roller disposed on an upper surface of the cleaner belt for removing residual leaves from the body of the crop of the outer planting row; It is equipped with 4. The work vehicle according to claim 3, wherein the inner crop cleaner roller and the outer crop cleaner roller are disposed obliquely with respect to a belt conveying direction of the cleaner belt.

5. 5. The work vehicle of claim 4, wherein the inner crop cleaner roller and the outer crop cleaner roller are arranged in parallel at a distance apart that is greater than the distance between the inner planting row and the outer planting row.

6. a leaf discharge unit having a single leaf discharge outlet for discharging the leaves removed from the main body of the crop of the inner planting row and the outer planting row; The work vehicle according to claim 5 , wherein the residual leaf discharge outlet is disposed downstream of the cleaner belt.

7. After the stems and leaves are cut, guide cups for guiding the main body of the crop of the inner planting row and the outer planting row downward are provided immediately below the inner crop stem and leaf cutting device and the outer crop stem and leaf cutting device, respectively; 7. The work vehicle according to claim 6, wherein a notch is provided on a front edge portion of the guide cup so that the crops being transported to the inner crop stem and leaf cutting device and the outer crop stem and leaf cutting device do not collide with the guide cup.

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