Work vehicle

Abstract

To solve the problem with a work vehicle like a conventional carrot harvesting vehicle that harvesting work efficiency is sometimes sacrificed when trying to secure the number of containers loaded on a vehicle body.SOLUTION: A carrot harvesting vehicle includes: a first front side container carrier 11 provided in front of a container loading base device 40; a first rear side container carrier 12 provided at the back of the container loading base device 40; a second front side container carrier 21 provided in front of the container loading base device 40; and a second rear side container carrier 22 provided at the back of the container loading base device 40. The second front side container carrier 21 is provided above the first front side container carrier 11. The second rear side container carrier 22 is provided above the first rear side container carrier 12.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a work vehicle such as a ginseng harvesting vehicle.

Background Art

[0002] A harvesting and conveying device that pulls out vegetables at the front and conveys them to the rear is provided on each of the left and right sides of a vehicle body equipped with traveling crawlers. In a vegetable harvester that sorts the vegetables harvested by the harvesting and conveying device with a harvested vegetable processing device, packs them in containers, and stacks a plurality of the containers side by side on a carrier provided on the other side of the vehicle body, a vegetable harvester is known in which an auxiliary mounting table is provided on the side of the carrier so as to be able to rise and fall (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the inventor of the present invention considers various needs of work vehicle users and believes that the trend of continuously implementing convenient functions on work vehicles such as ginseng harvesting vehicles is accelerating more and more.

[0005] However, the inventor has noticed that for conventional work vehicles, the usability when using convenient functions is not always good.

[0006] More specifically, the inventor has noticed that for work vehicles such as conventional ginseng harvesting vehicles, a higher-efficiency harvesting operation is expected to be ensured without sacrificing the number of vehicle-mounted containers.

[0007] The present invention aims to provide a work vehicle that can improve usability in consideration of the above-described conventional problems.

Means for Solving the Problems

[0008] A first aspect of the present invention is a work vehicle that harvests crops and stores the harvested crops in a plurality of containers, comprising a conveyor device having a conveyor for conveying the crops in the left-right direction, a container mounting table device having a container mounting table on which the container in which the crops fall and are stored from the end of the conveyor is placed, a first front-side container carrier provided in front of the container mounting table device, a first rear-side container carrier provided behind the container mounting table device, a second front-side container carrier provided in front of the container mounting table device, a second rear-side container carrier provided behind the container mounting table device, and being provided with, wherein the second front-side container carrier is provided above the first front-side container carrier, and the second rear-side container carrier is provided above the first rear-side container carrier.

[0009] In a second aspect of the present invention, the conveying directions of the first front-side container carrier, the first rear-side container carrier, the second front-side container carrier, and the second rear-side container carrier are in the front-rear direction, the carrier inclination of the first front-side container carrier is set such that the front end of the carrier is lower than the rear end of the carrier, and the carrier inclination of the first rear-side container carrier is set such that the rear end of the carrier is lower than the front end of the carrier. The carrier inclination of the second front-side container carrier is set such that the front end of the carrier is lower than the rear end of the carrier. The carrier inclination of the second rear-side container carrier is set such that the rear end of the carrier is lower than the front end of the carrier, and the work vehicle of the first aspect of the present invention is characterized by this.

[0010] In a third aspect of the present invention, the carrier inclination of the first front-side container carrier is adjustable such that the front end of the carrier is even lower than the rear end of the carrier. The carrier inclination of the first rear-side container carrier is adjustable such that the rear end of the carrier is even lower than the front end of the carrier. The carrier inclination of the second front-side container carrier is adjustable such that the rear end of the carrier is lower than the front end of the carrier. The carrier inclination of the second rear-side container carrier is adjustable such that the front end of the carrier is lower than the rear end of the carrier, and the work vehicle of the second aspect of the present invention is characterized by this.

[0011] In a fourth aspect of the present invention, the first front-side container carrier has container stoppers provided at the front end and the rear end of the carrier, which can be released according to a user's instruction. The first rear-side container carrier has container stoppers provided at the front end and the rear end of the carrier, which can be released according to a user's instruction. The second front-side container carrier has a container stopper provided at the rear end of the carrier, which can be released according to a user's instruction, and a container stopper provided at the front end of the carrier, which cannot be released. The third working vehicle of the present invention is characterized in that the second rear container carrier has a container stopper provided at the front end of the carrier that can be released according to a user's instruction, and a container stopper provided at the rear end of the carrier that cannot be released.

[0012] In the fifth aspect of the present invention, the carrier inclination of the second front container carrier and the carrier inclination of the second rear container carrier are adjusted by a controller. Whether the container is placed on the container mounting table is detected by a container sensor. When the controller determines based on the detection result of the container sensor that the container is placed on the container mounting table, the controller prohibits adjusting the carrier inclination such that the rear end of the carrier of the second front container carrier is lower than the front end of the carrier, and adjusting the carrier inclination such that the front end of the carrier of the second rear container carrier is lower than the rear end of the carrier. This is the fourth working vehicle of the present invention.

[0013] In the sixth aspect of the present invention, the second front container carrier is displaced outward of the vehicle body with respect to the left - right direction compared to the first front container carrier. The second rear container carrier is displaced outward of the vehicle body with respect to the left - right direction compared to the first rear container carrier. This is the fifth working vehicle of the present invention.

[0014] The seventh aspect of the present invention further includes a third front container carrier provided in front of the container mounting table device. The third front container carrier is provided above the second front container carrier. The conveying direction of the third front container carrier is the front - rear direction. The carrier inclination of the third front container carrier is set such that the rear end of the carrier is lower than the front end of the carrier. The third front container carrier is a container carrier for placing the empty container in which the crop is not stored. The container mounting table is vertically movable. When the container mounting table is raised to the height position of the third front container carrier, the carrier inclination of the third front container carrier can be adjusted such that the rear end of the carrier is further lower than the front end of the carrier. It is a sixth working vehicle of the present invention characterized by this.

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 improve practicality.

[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 further improve practicality.

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

[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 operator.

[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 improve convenience.

Brief Description of the Drawings

[0022]

Figure 1

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Figure 14

Embodiments for Carrying Out the Invention

[0023] The embodiments of the present invention will be described in detail with reference to the drawings.

[0024] The same applies hereinafter, but some components may not be shown in the drawings, or may be shown perspectively or omitted.

[0025] While explaining the operation of the ginseng harvesting vehicle of the embodiment of the present invention, the operation control method of the work vehicle of the invention related to the present invention, which is realized by a controller 80 or the like, will also be explained.

[0026] Such a ginseng harvesting vehicle is a specific example of the work vehicle in the present invention that harvests ginseng and stores the harvested ginseng in a plurality of containers, and ginseng is a specific example of the crop in the present invention.

[0027] (1) First, with reference mainly to FIGS. 1 and 2, the configuration and operation of the ginseng harvesting vehicle according to the embodiment of the present invention will be specifically described.

[0028] Here, FIGS. 1 and 2 are perspective views (one and two) of the ginseng harvesting vehicle according to the embodiment of the present invention.

[0029] The conveyor device 70 is a device having a conveyor 71 for conveying ginseng in the left - right direction. The container mounting table device 40 is a device having a container mounting table 41 on which the container into which ginseng falls from the end of the conveyor 71 and is stored is mounted.

[0030] As shown in FIGS. 3(a), 3(b), 3(c) and 3(d), 4(a), 4(b), 4(c) and 4(d), and 5(a) and 5(b), which are schematic partial right - side views (one to ten) of the ginseng harvesting vehicle according to the embodiment of the present invention, by manually moving the containers used in the order indicated by the circled numbers one by one, the operation of setting the used containers onto the container mounting table 41 can be easily performed while utilizing the elevation of the container mounting table 41. In this process, the front - side container carrier unit 102 composed of the first front - side container carrier 11, the second front - side container carrier 21, and the third front - side container carrier 31, the rear - side container carrier unit 103 composed of the first rear - side container carrier 12 and the second rear - side container carrier 22, and the container mounting table device 40 are involved.

[0031] The first front container carrier 11 is a carrier provided in front of the container mounting table device 40. The first rear container carrier 12 is a carrier provided behind the container mounting table device 40. The second front container carrier 21 is a carrier provided in front of the container mounting table device 40. The second rear container carrier 22 is a carrier provided behind the container mounting table device 40. The second front container carrier 21 is provided above the first front container carrier 11. The second rear container carrier 22 is provided above the first rear container carrier 12.

[0032] The third front container carrier 31 is a carrier provided in front of the container mounting table device 40. The third front container carrier 31 is provided above the second front container carrier 21. The conveying direction of the third front container carrier 31 is the front-rear direction. The carrier inclination of the third front container carrier 31 is set such that the rear end of the carrier is lower than the front end of the carrier. The third front container carrier 31 is a container carrier for mounting an empty container not containing carrots. The container mounting table 41 is vertically movable.

[0033] Even if the number of vehicle-mounted containers is approximately 10 or more, a carrot harvester vehicle as a root vegetable harvester capable of continuously accommodating root vegetables such as carrots harvested by the digging and conveying mechanism 106 into a container such as a mini-container with a specification of 20 kilograms is realized. The first front-side container carrier 11, the first rear-side container carrier 12, the second front-side container carrier 21, the second rear-side container carrier 22, and the third front-side container carrier 31 are roller conveyors arranged in a straight line for smoothly moving a full container in a vehicle-mounted state, and are provided in a 180-degree opposed form having two extending directions, namely, the vehicle forward direction and the vehicle backward direction, from the carrot accommodation position at the end of the conveyor 71 that functions as a so-called sorting conveyor. In a non-opposed form having only one extending direction in the vehicle forward direction from the carrot accommodation position, in order to increase the number of vehicle-mounted containers, which is also called the number of transport boxes, container stacking involving lifting the container by manpower is often required. However, the first front-side container carrier 11, the first rear-side container carrier 12, the second front-side container carrier 21, the second rear-side container carrier 22, and the third front-side container carrier 31 contribute to ensuring such a number of vehicle-mounted containers in the front-rear direction, and the configuration with parallel multi-layer carriers realizes vehicle travel in a narrow field with a compact vehicle overall width without deteriorating the left-right balance of the vehicle, so a highly efficient harvesting operation is expected.

[0034] The carrier configurations of the first front-side container carrier 11, the first rear-side container carrier 12, the second front-side container carrier 21, and the second rear-side container carrier 22 are configurations with parallel carriers for both the front and the rear. Since container stacking is not required, the height from the carrier transport surface to the center of gravity of the container does not increase, and container tipping hardly occurs.

[0035] The conveying directions of the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22 are the front-rear direction. The carrier inclination of the first front container carrier 11 is set such that the front end of the carrier is lower than the rear end of the carrier. The carrier inclination of the first rear container carrier 12 is set such that the rear end of the carrier is lower than the front end of the carrier. The carrier inclination of the second front container carrier 21 is set such that the front end of the carrier is lower than the rear end of the carrier. The carrier inclination of the second rear container carrier 22 is set such that the rear end of the carrier is lower than the front end of the carrier.

[0036] As shown in FIGS. 6(a) and 6(b) and FIGS. 7(a) and 7(b), which are schematic partial right side views (eleven to fourteen) of the carrot harvesting vehicle according to the embodiment of the present invention, by manually moving the used container while utilizing the adjustment of the carrier inclination, the operation of lowering the container into the field can be easily performed. Of course, it goes without saying that it is not desirable to set an excessively large carrier inclination, and it is conceivable that at least the default carrier inclination is zero.

[0037] The carrier inclination of the first front container carrier 11 can be adjusted such that the front end of the carrier is even lower than the rear end of the carrier. The carrier inclination of the first rear container carrier 12 can be adjusted such that the rear end of the carrier is even lower than the front end of the carrier. The carrier inclination of the second front container carrier 21 can be adjusted such that the rear end of the carrier is lower than the front end of the carrier. The carrier inclination of the second rear container carrier 22 can be adjusted such that the front end of the carrier is lower than the rear end of the carrier.

[0038] The heights of the front carrier end and the rear carrier end as carrier ends can be respectively selected by a carrier tilting rotation operation as the height from the container stock height with a carrier tilt of zero to the container lowering height with a non-zero carrier tilt. As the vehicle body moves forward or backward, the height of the carrier end is selectively adjusted, so that the container is smoothly lowered to the field.

[0039] For example, by making the height of the rear carrier end of the second front-side container carrier 21 substantially coincide with the height of the front carrier end of the first rear-side container carrier 12, or by making the height of the front carrier end of the second rear-side container carrier 22 substantially coincide with the height of the rear carrier end of the first front-side container carrier 11, the containers on the second front-side container carrier 21 and the second rear-side container carrier 22 as upper-level carriers can be easily lowered to the first front-side container carrier 11 and the first rear-side container carrier 12 as lower-level carriers. Further, by making the height of the rear carrier end of the first rear-side container carrier 12 substantially coincide with the height of the field, or by making the height of the front carrier end of the first front-side container carrier 11 substantially coincide with the height of the field, the containers on the first front-side container carrier 11 and the first rear-side container carrier 12 can be easily lowered to the field when the vehicle body moves forward or backward.

[0040] The conveyance of carrots from the conveyor device 70 to the first front-side container carrier 11, the first rear-side container carrier 12, the second front-side container carrier 21, and the second rear-side container carrier 22 is realized by the movable conveyor lifting and lowering operation of the conveyor device 70 in a mode where a flexible container bag is used instead of the container. Since container stacking involving lifting the container by manpower is not required, the auxiliary operator sitting on the auxiliary operator seat 105 can concentrate on other operations related to harvesting.

[0041] As shown in Fig. 8, which is a schematic partial plan view of the carrot harvesting vehicle according to the first modification of the embodiment of the present invention, it is conceivable that the front ends of the first front container carrier 11, the second front container carrier 21, and the third front container carrier 31 are displaced outward of the vehicle body in the left-right direction as compared with the rear ends of the carriers. The front end of the carrier is separated to the right in a plan view from the driver's seat 101, and without suppressing the carrier lengths of the first front container carrier 11, the second front container carrier 21, and the third front container carrier 31, it is possible to realize a user-friendly driver boarding and alighting specification that facilitates access to the driver's seat 101 while securing the number of vehicle-mounted containers.

[0042] (2) Next, with reference mainly to Figs. 9(a), 9(b) and 9(c), 10(a), 10(b) and 10(c), 11(a), 11(b) and 11(c), 12(a), 12(b) and 12(c), 13 and 14, the configuration and operation of the carrot harvesting vehicle according to the embodiment of the present invention will be described more specifically.

[0043] Here, Fig. 9(a) is a schematic partial plan view (one) of the carrot harvesting vehicle according to the second modification of the embodiment of the present invention, Fig. 9(b) is a schematic partial front view (one) of the carrot harvesting vehicle according to the second modification of the embodiment of the present invention, Fig. 9(c) is a schematic partial right side view (one) of the carrot harvesting vehicle according to the second modification of the embodiment of the present invention, Fig. 10(a) is a schematic partial plan view (two) of the carrot harvesting vehicle according to the second modification of the embodiment of the present invention, Fig. 10(b) is a schematic partial front view (two) of the carrot harvesting vehicle according to the second modification of the embodiment of the present invention, Fig. 10(c) is a schematic partial right side view (two) of the carrot harvesting vehicle according to the second modification of the embodiment of the present invention, Fig. 11(a) is a schematic partial plan view (one) of the carrot harvesting vehicle according to the third modification of the embodiment of the present invention, Fig. 11(b) is a schematic partial front view (one) of the carrot harvesting vehicle according to the third modification of the embodiment of the present invention, Fig. 11(c) is a schematic partial right side view (one) of the carrot harvesting vehicle according to the third modification of the embodiment of the present invention, Fig. 12(a) is a schematic partial plan view (two) of the carrot harvesting vehicle according to the third modification of the embodiment of the present invention, Fig. 12(b) is a schematic partial front view (two) of the carrot harvesting vehicle according to the third modification of the embodiment of the present invention, Fig. 12(c) is a schematic partial right side view (two) of the carrot harvesting vehicle according to the third modification of the embodiment of the present invention, Fig. 13 is a schematic partial rear view of the carrot harvesting vehicle according to the fourth modification of the embodiment of the present invention, and Fig. 14 is a schematic partial plan view of the carrot harvesting vehicle according to the fifth modification of the embodiment of the present invention.

[0044] The first front container carrier 11 has container stoppers 50 provided at the front end of the carrier and the rear end of the carrier, which can be released according to the user's instruction. The first rear container carrier 12 has container stoppers 50 provided at the front end of the carrier and the rear end of the carrier, which can be released according to the user's instruction. The second front container carrier 21 has a container stopper 50 provided at the rear end of the carrier, which can be released according to the user's instruction, and a container stopper 50 provided at the front end of the carrier, which cannot be released. The second rear container carrier 22 has a container stopper 50 provided at the front end of the carrier, which can be released according to the user's instruction, and a container stopper 50 provided at the rear end of the carrier, which cannot be released.

[0045] Since the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21 and the second rear container carrier 22 have the container stoppers 50, even in a posture where the heights of the front end of the carrier and the rear end of the carrier are smaller than the height of the container mounting table device 40 that gives the carrot storage position at the end of the conveyor 71, container tipping hardly occurs. Since container stacking is not required, container tipping due to carrier inclination is unlikely to occur in the first place, and the container conveying power required in the horizontal carrier specification is not required. By the rolling operation of pushing and shifting the container with a size approximately half of the container width, the container is stuffed in the front-rear direction from the container mounting table device 40 to the carrier end without gaps.

[0046] As shown in FIGS. 9(a), 9(b) and 9(c), 10(a), 10(b) and 10(c), 11(a), 11(b) and 11(c), and 12(a), 12(b) and 12(c), a container stopper 50 at the carrier end of the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, the second rear container carrier 22, and the third front container carrier 31 may be provided in a configuration of a carrier roller that is rotatable between a lying state and a standing state. Since the carrier can be easily extended by rotating the carrier roller from the standing state to the lying state, when loading carrots by flowing the container onto a carrot transport truck or the like, the container can be smoothly lowered onto a conveyor on the truck side while using the horizontally positioned container stopper 50.

[0047] A container stopper 50 provided to be able to enter and exit between a first front container carrier 11, a first rear container carrier 12, a second front container carrier 21, a second rear container carrier 22, and a container mounting table device 40 can surely suppress, in a popping-out state, an unintended container movement such as a container movement accompanied by a complicated power conveyance by a heavy and expensive conveyance belt that is difficult to convey in the reverse direction. With such a stopper function, it is possible to suppress a displacement of the position of the container placed on the container mounting table 41 due to an increase or decrease in the vehicle speed, an inclination of the farm field, etc., and maintain a desirable container position. Not only is it difficult for a backflow phenomenon of the container from the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22 to occur, but also, for example, at a timing according to the intention of an auxiliary worker performing a sorting operation, the stopper entry / exit state is changed from the popping-out state to the entry state, so that the container can be smoothly moved from the container mounting table device 40 to the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22.

[0048] A mode in which the container stopper 50 provided to the front container carrier unit 102 and the container stopper 50 provided to the rear container carrier unit 103 can enter and exit simultaneously by a foot stepping operation of a stopper operation pedal of an auxiliary worker is also conceivable.

[0049] A mode is also conceivable in which the container stopper 50 provided to the front container carrier unit 102 and the container stopper 50 provided to the rear container carrier unit 103 can be separately inserted and removed by an operation such as stepping on the stopper operation pedal of the auxiliary worker. For example, by changing the stopper insertion / removal state from the protruding state to the retracted state at a timing according to the intention of the auxiliary worker performing the sorting operation, the container can be smoothly moved from the container mounting table device 40 to one or both of the front container carrier unit 102 and the rear container carrier unit 103.

[0050] A mode is also conceivable in which the container stopper 50 provided to the front container carrier unit 102 and the container stopper 50 provided to the rear container carrier unit 103 can be selectively switched to be inserted and removed by an operation such as stepping on the stopper operation pedal of the auxiliary worker. For example, by changing the stopper insertion / removal state from the protruding state to the retracted state at a timing according to the intention of the auxiliary worker performing the sorting operation, the container can be smoothly moved from the container mounting table device 40 to one of the front container carrier unit 102 and the rear container carrier unit 103.

[0051] Among the carrier rollers of the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22, the container brake 104, which is provided so as to be default-pressed against the carrier roller corresponding to the center-of-gravity position of the containers transported and arranged in a row, and which can be released by a brake release operation, can surely suppress unintentional container movement in the brake-pressed-on state. With such a brake function, it is possible to suppress the misalignment of the containers transported and arranged in a row and maintain the desired container position. Not only is it difficult for a reverse flow phenomenon of the containers from the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22 to occur, but also, for example, the brake state can be changed from the brake-pressed-on state to the brake-pressed-off state at a timing according to the intention of an auxiliary operator performing a sorting operation, whereby the container can be smoothly moved from the container mounting table device 40 to the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22.

[0052] A mode is also conceivable in which the container brake 104 provided on the front container carrier unit 102 and the container brake 104 provided on the rear container carrier unit 103 can be simultaneously released in conjunction with the container stopper 50 by an operation such as stepping on the stopper operation pedal.

[0053] When the container mounting table 41 that moves up and down with the movable conveyor lifting operation of the conveyor device 70 stops at the carrier roller conveying surface height of the second front-side container carrier 21 and the second rear-side container carrier 22 as the upper floor carriers, the container brakes 104 provided on the second front-side container carrier 21 and the second rear-side container carrier 22 can be simultaneously released in conjunction with the container stopper 50 on the same floor by stepping on the stopper operation pedal or the like. Such a mode is also conceivable.

[0054] The carrier inclination of the second front-side container carrier 21 and the carrier inclination of the second rear-side container carrier 22 are adjusted by the controller 80. Whether the container is placed on the container mounting table 41 is detected by the container sensor 60. When the controller 80 determines that the container is placed on the container mounting table 41 based on the detection result of the container sensor 60, the controller 80 prohibits the adjustment of the carrier inclination such that the carrier rear end of the second front-side container carrier 21 is lower than the carrier front end, and the adjustment of the carrier inclination such that the carrier front end of the second rear-side container carrier 22 is lower than the carrier rear end.

[0055] Only when the container is not placed on the container mounting table 41, the lowering of the carrier rear end of the second front-side container carrier 21 and the lowering of the carrier front end of the second rear-side container carrier 22 are permitted. The container containing the carrots is hardly damaged due to falling from the second front-side container carrier 21 and the second rear-side container carrier 22 as the upper floor carriers, and the occurrence of vehicle body damage is also suppressed.

[0056] Only when the container mounting table 41 stops at the height of the first front container carrier 11 and the first rear container carrier 12 as the lower floor carriers, the lowering of the carrier rear end of the second front container carrier 21 is permitted, and the lowering of the carrier front end of the second rear container carrier 22 is also permitted.

[0057] A mode in which only one of the lowering of the carrier rear end of the second front container carrier 21 and the lowering of the carrier front end of the second rear container carrier 22 is permitted is also conceivable.

[0058] In this way, not only the adjustment operations of the carrier inclination degrees of the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, the second rear container carrier 22, and the third front container carrier 31, but also the on / off operations of the container stopper 50 and the container brake 104 by stepping on the stopper operation pedal or the like are preferably realized by electronic control by the controller 80 or the like by using sensor detection by the container sensor 60 or the like.

[0059] By using a switching seesaw pedal mechanism arranged on the floor with the longitudinal direction of the pedal being the front-rear direction, the container stopper 50 provided on the front container carrier unit 102 is released only when a stepping operation in which the front part of the pedal is stepped on is performed, and the container stopper 50 provided on the rear container carrier unit 103 is released only when a stepping operation in which the rear part of the pedal is stepped on is performed. A pedal switching specification such as a stopper operation pedal is also considered. Since the container stopper 50 is released by an intuitive stepping operation that is easy to understand, the auxiliary worker can concentrate on tasks that require hands, such as container moving operations.

[0060] A mode is also conceivable in which the container brake 104 provided to the front container carrier unit 102 and the container brake 104 provided to the rear container carrier unit 103 can be simultaneously released in conjunction with the container stopper 50 on the same floor by stepping on the stopper operation pedal or the like. An efficient container carrier conveyance operation can be realized with a simple configuration.

[0061] For example, in the mode where the container is the above-described 20-kilogram specification mini-container, it is desirable that the container stopper 50 is provided only to the rib portions at the lower ends of the four corners, avoiding the rounded portions formed on the outer surface of the container. Not only can the container stopper 50 be surely locked to the rib portion without coming off, but also container breakage is less likely to occur, and a contribution to weight reduction of the container carrier is expected.

[0062] The second front container carrier 21 is displaced outward of the vehicle body in the left-right direction compared to the first front container carrier 11. The second rear container carrier 22 is displaced outward of the vehicle body in the left-right direction compared to the first rear container carrier 12.

[0063] As shown in FIG. 13, the second front container carrier 21 and the second rear container carrier 22 as the upper floor carriers are each slightly shifted outward to the right in a rear view compared to the first front container carrier 11 and the first rear container carrier 12 as the lower floor carriers. A mode is also conceivable. Not only can the carrier tilt rotation be performed without collision of the carrier frame, but also the distance between the carriers in the vertical direction is suppressed, and the end of the conveyor 71 that is lifted and lowered so as to rotate in the vertical direction can be sufficiently close to the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22.

[0064] As the topmost carrier, the third front container carrier 31 is slightly shifted to the right inside in a rear view compared to the second front container carrier 21 as the middle carrier.

[0065] As the topmost carrier, the third front container carrier 31 is not shifted either to the right outside or to the right inside in a rear view compared to the first front container carrier 11 as the bottommost carrier.

[0066] In this way, although protrusion of the carrier member in the vertical direction is often inevitable on the outside and inside of the vehicle body in the left - right direction, carrier member interference in the vertical direction hardly occurs due to such a shift based on the left - right direction. Therefore, while realizing a compact vertical carrier layout, it is preferable to perform the carrier tilt rotation operation with a sufficient carrier tilt amount without sacrificing the degree of freedom of carrier tilt rotation such as carrier folding.

[0067] As shown in FIG. 14, the first front container carrier 11, the second front container carrier 21, and the third front container carrier 31 may be shifted to the outside of the vehicle body with respect to the left - right direction compared to the first rear container carrier 12 and the second rear container carrier 22. The first front container carrier 11, the second front container carrier 21, and the third front container carrier 31 are separated to the right in a plan view from the driver's seat 101. Without suppressing the carrier length of the first front container carrier 11, the second front container carrier 21, and the third front container carrier 31, it is possible to realize a user - friendly driver boarding and alighting specification that facilitates access to the driver's seat 101 while ensuring the number of vehicle - mounted containers.

[0068] When the container mounting table 41 is raised to the height position of the third front container carrier 31, the carrier inclination of the third front container carrier 31 can be adjusted so that the carrier rear end is lower than the carrier front end.

[0069] The third front container carrier 31, which is the topmost carrier, is a container carrier for placing empty containers, and its height decreases from the carrier front end toward the carrier rear end near the container mounting table device 40. The carrier inclination direction of the third front container carrier 31 is opposite to the default carrier inclination directions of the first front container carrier 11, the first rear container carrier 12, the second front container carrier 21, and the second rear container carrier 22. Even if empty containers are successively used from the third front container carrier 31, the empty containers to be used next slide by their own weight toward the container mounting table device 40. Therefore, the container standby position is close to the auxiliary operator seat 105, and it is easy for the auxiliary operator to set the containers.

[0070] (3) Next, with reference mainly to FIGS. 1 and 2, the configuration and operation of the ginseng harvesting vehicle according to the embodiment of the present invention will be described in more detail.

[0071] The voice data of the auxiliary operator sitting in the auxiliary operator seat 105 is input into the microphone, and the text data obtained by converting the input voice data is displayed on a display window of a monitor provided near the driver seat 101. When the auxiliary operator wants to talk to the driver sitting in the driver seat 101, in a mode where such the intention of the auxiliary operator is transmitted by a single horn sound, touching the driver's back, or calling, etc., the driver who is performing the driving operation turns around to grasp the situation and then moves on to the next action, so time loss is likely to occur. By looking at the content of the above-described text data, the driver can accurately understand the intention of the auxiliary operator and move on to the next action in a timely manner without turning around to grasp the situation. Such monitor display of the text data also promotes easy conversation between the driver and the auxiliary operator.

[0072] Along with setting the portable terminal to the portable terminal holders having a charging function respectively provided near the driver seat 101 and the auxiliary operator seat 105, a language processing application program such as an automatic translation app is automatically started, and a mode in which chatting between the driver and the auxiliary operator can be performed is also conceivable. By using the excellent application program function, the driver can accurately understand the intention of the auxiliary operator by looking at the easily understandable text content displayed without turning around to grasp the situation and can move on to the next action in a timely manner while looking ahead.

[0073] Note that the program of the invention related to the present invention is a program for causing a computer to execute the operations of all or part of the steps (or processes, operations, 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 the computer.

[0074] In addition, a recording medium for an invention related to the present invention is a recording medium that records 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 for 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.

[0075] Note that the above-mentioned "part of the steps (or processes, operations, and actions, etc.)" means one or some of those multiple steps.

[0076] Also, the above-mentioned "operation of the steps (or processes, operations, and actions, etc.)" means all or part of the operations of the above-mentioned steps.

[0077] In addition, one usage form of the program for the invention related to the present invention may be a form in which it is transmitted through a transmission medium such as the Internet, light, radio waves, or sound waves, read by a computer, and operates in cooperation with the computer.

[0078] In addition, the recording medium includes ROM (Read Only Memory) and the like.

[0079] Also, the computer is not limited to pure hardware such as a CPU (Central Processing Unit), and may include firmware, an OS (Operating System), and further peripheral devices.

[0080] As described above, the configuration of the present invention may be realized software-wise or hardware-wise.

Industrial Applicability

[0081] The work vehicle in the present invention can improve usability and is useful for the purpose of being used in work vehicles such as carrot harvesting vehicles.

Explanation of Signs

[0082] 11 First front container carrier 12 First rear container carrier 21 Second front container carrier 22 Second rear container carrier 31 Third front container carrier 40 Container mounting table device 41 Container mounting table 50 Container stopper 60 Container sensor 70 Conveyor device 71 Conveyor 80 Controller 101 Operator's seat 102 Front container carrier unit 103 Rear container carrier unit 104 Container brake 105 Assistant operator's seat 106 Digging and conveying mechanism

Claims

1. A work vehicle that harvests crops and stores the harvested crops in a plurality of containers, comprising: a conveyor device having a conveyor that conveys the crops in the left-right direction; a container mounting table device having a container mounting table on which the containers are placed where the crops fall and are stored from the end of the conveyor; a first front-side container carrier provided in front of the container mounting table device; a first rear-side container carrier provided behind the container mounting table device; a second front-side container carrier provided in front of the container mounting table device; a second rear-side container carrier provided behind the container mounting table device; wherein the second front-side container carrier is provided above the first front-side container carrier; the second rear-side container carrier is provided above the first rear-side container carrier, characterized in that it is a work vehicle.

2. The conveying directions of the first front-side container carrier, the first rear-side container carrier, the second front-side container carrier, and the second rear-side container carrier are in the front-rear direction, the carrier inclination of the first front-side container carrier is set such that the front end of the carrier is lower than the rear end of the carrier, the carrier inclination of the first rear-side container carrier is set such that the rear end of the carrier is lower than the front end of the carrier, the carrier inclination of the second front-side container carrier is set such that the front end of the carrier is lower than the rear end of the carrier, the carrier inclination of the second rear-side container carrier is set such that the rear end of the carrier is lower than the front end of the carrier, characterized in that it is the work vehicle according to Claim 1.

3. The carrier inclination of the first front-side container carrier is adjustable such that the front end of the carrier is even lower than the rear end of the carrier, the carrier inclination of the first rear-side container carrier is adjustable such that the rear end of the carrier is even lower than the front end of the carrier, the carrier inclination of the second front-side container carrier is adjustable such that the rear end of the carrier is lower than the front end of the carrier, The working vehicle according to claim 2, characterized in that the carrier inclination of the second rear container carrier is adjustable such that the front end of the carrier is lower than the rear end of the carrier.

4. The first front container carrier has container stoppers provided at the front end of the carrier and the rear end of the carrier, which can be released according to a user's instruction. The first rear container carrier has container stoppers provided at the front end of the carrier and the rear end of the carrier, which can be released according to a user's instruction. The second front container carrier has a container stopper provided at the rear end of the carrier, which can be released according to a user's instruction, and a container stopper provided at the front end of the carrier, which cannot be released. The working vehicle according to claim 3, characterized in that the second rear container carrier has a container stopper provided at the front end of the carrier, which can be released according to a user's instruction, and a container stopper provided at the rear end of the carrier, which cannot be released.

5. The carrier inclination of the second front container carrier and the carrier inclination of the second rear container carrier are adjusted by a controller. Whether the container is placed on the container mounting table is detected by a container sensor. When the controller determines based on the detection result of the container sensor that the container is placed on the container mounting table, the controller prohibits the adjustment of the carrier inclination such that the rear end of the carrier of the second front container carrier is lower than the front end of the carrier, and the adjustment of the carrier inclination such that the front end of the carrier of the second rear container carrier is lower than the rear end of the carrier. The working vehicle according to claim 4 is characterized by this.

6. The second front container carrier is displaced outward of the vehicle body with respect to the left-right direction compared to the first front container carrier. The working vehicle according to claim 5, characterized in that the second rear container carrier is displaced outward of the vehicle body with respect to the left-right direction compared to the first rear container carrier.

7. The container mounting table device further includes a third front container carrier provided in front of the container mounting table device, the third front container carrier is provided above the second front container carrier, the conveying direction of the third front container carrier is the front-rear direction, the carrier inclination of the third front container carrier is set such that the rear end of the carrier is lower than the front end of the carrier, the third front container carrier is a container carrier for mounting the empty container in which the crop is not stored, the container mounting table is vertically movable, When the container mounting table is raised to the height position of the third front container carrier, the carrier inclination of the third front container carrier can be adjusted such that the rear end of the carrier is further lower than the front end of the carrier. The work vehicle according to claim 6, characterized in that.

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