Work vehicle

Abstract

To solve such a problem, in conventional work vehicles, the braking configuration is not necessarily stable.SOLUTION: A vegetable transplanter comprises: a motor device 10 that generates power; a battery device 20 that supplies electric power to the motor device 10; a transmission device 30 that changes the speed of the power generated by the motor device 10; an output pulley member 40 that outputs power from the motor device 10; an input pulley member 50 that inputs power to the transmission device 30; a belt member 60 that transmits power from the motor device 10 to the transmission device 30 and is wound between the output pulley member 40 and the input pulley member 50; and a brake member 70 that turns off the transmission of power from the motor device 10 to the transmission device 30 by pressing the belt member 60.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to work vehicles such as vegetable transplanters. [Background technology]

[0002] A rice transplanter-like work vehicle is known that includes a traveling body supported by traveling wheels, an electric motor that drives the traveling wheels, and a planting implement that is supported on the traveling body so that it can be raised and lowered. The rice transplanter is equipped with a speed change lever detection means that detects the lever position of the speed change lever, a brake detection means that detects whether the brake is on or off, a planting permission means that allows planting work by the planting implement, a motor stop means that stops the electric motor when the brake detection means is in the on state regardless of the detected position of the speed change lever detection means, and an automatic speed increase means that gradually increases the output of the electric motor to a predetermined traveling speed detected by the speed change lever detection means when the speed change lever detection means detects the traveling position, the brake detection means changes from the on state to the off state, and the planting permission means is in a state that allows planting work (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-188180 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the inventor believes that the trend of considering the various needs of users and successively implementing convenient functions into work vehicles will continue to accelerate.

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

[0006] More specifically, the inventors have realized that for conventional work vehicles, the braking configuration is not always stable.

[0007] SUMMARY OF THE INVENTION In consideration of the above-mentioned problems inherent in the prior art, the present invention has an object to provide a work vehicle that can improve usability. [Means for solving the problem]

[0008] The first aspect of the present invention is a motor device that generates power; a battery device for supplying power to the motor device; a transmission device that changes the speed of the power generated by the motor device; an output pulley member for outputting the power from the motor device; an input pulley member that inputs the power to the transmission device; a belt member wound between the output pulley member and the input pulley member to transmit the power from the motor device to the transmission device; a brake member that presses the belt member to stop the transmission of power from the motor device to the transmission device; The work vehicle is characterized by being equipped with:

[0009] The second aspect of the present invention further includes a tensioner member that suppresses slack in the belt member, In the work vehicle of the first invention, when the brake member cuts off the transmission of the power, the tensioner member does not suppress the slack of the belt member.

[0010] A third aspect of the present invention is the work vehicle according to the second aspect of the present invention, wherein the brake member presses the belt member at a location where the belt member contacts the input pulley member.

[0011] A fourth aspect of the present invention is a rotary machine, wherein a diameter of the output pulley member is smaller than a diameter of the input pulley member, In a work vehicle according to a third aspect of the present invention, the tensioner member suppresses the slack in the belt member by pressing the belt member.

[0012] In a fifth aspect of the present invention, the tensioner member is connected to the brake member by a wire, A fourth work vehicle of the present invention is characterized in that when the brake member cuts off the transmission of the power, the wire is pulled, and the tensioner member is linked to the brake member so as not to suppress the slack in the belt member.

[0013] The sixth aspect of the present invention is a motor device, wherein the motor device is disposed at a front part of a vehicle body, the battery device is disposed above the motor device, the transmission device is disposed behind the motor device, a direction of an output pulley rotation shaft of the output pulley member and a direction of an input pulley rotation shaft of the input pulley member coincide with the left-right direction of a vehicle body; the position where the input pulley rotation shaft is disposed is above the output pulley rotation shaft and behind the output pulley rotation shaft, The tensioner member presses the belt member from below the belt member, the brake member presses the belt member from behind the input pulley member, A fifth aspect of the present invention is a work vehicle, characterized in that the wire is routed between the tensioner member and the brake member via an intermediate pulley arranged below the belt member.

[0014] A seventh aspect of the present invention is a transmission device having a traveling power reduction mechanism that reduces the speed of the power for driving a traveling device, the traveling power reduction mechanism includes a counter shaft that moves in conjunction with the input pulley rotation shaft and is disposed below the input pulley rotation shaft, and a traveling power output shaft that moves in conjunction with the counter shaft and is disposed below the counter shaft, A sixth aspect of the present invention is a work vehicle, characterized in that the power after the deceleration is output to the traveling device via a side clutch mechanism provided on both sides of the traveling power output shaft in the left-right direction of the vehicle body.

[0015] An eighth aspect of the present invention is a transmission device further including a work power reduction mechanism that reduces the speed of the power for driving the work implement, A seventh aspect of the present invention is a work vehicle, wherein the work power reduction mechanism is provided on the right side of the input pulley member in the left-right direction of the vehicle body.

[0016] A ninth aspect of the present invention is a method for producing a work machine comprising: a planting unit for planting a transplant in a field; A boarding worker sensor is provided to detect whether or not a boarding worker is seated in the seat, an implant sensor for detecting whether the implant to be planted is being delivered to the implanting section; a controller is provided that controls the brake member based on detection of the operator sensor and the implant sensor; The controller controls the vehicle body to stop by pressing the brake member against the belt member when the operator is not seated in the seat and the transplants to be planted are not being supplied to the planting section, controls the vehicle body to stop when the operator is seated in the seat and the transplants to be planted are being supplied to the planting section, and controls the vehicle body to maintain the traveling speed at a predetermined traveling speed level when the operator is not seated in the seat and the transplants to be planted are being supplied to the planting section, and controls the vehicle body to be kept slower than the predetermined traveling speed level when the operator is not seated in the seat and the transplants to be planted are being supplied to the planting section. [Effects of the Invention]

[0017] The first aspect of the present invention makes it possible to improve usability.

[0018] 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 reliability.

[0019] 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.

[0020] 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 further improve reliability.

[0021] 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 simplify the configuration.

[0022] 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 reduce the burden on the worker.

[0023] According to the seventh aspect of the present invention, in addition to the effects of the sixth aspect of the present invention, it is possible to improve practicality.

[0024] According to the eighth aspect of the present invention, in addition to the effect of the seventh aspect of the present invention, it is possible to make the configuration compact.

[0025] According to the ninth aspect of the present invention, in addition to the effects of the eighth aspect of the present invention, it is possible to further improve convenience. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1A is a perspective view of a vegetable transplanter according to an embodiment of the present invention; FIG. 1B is a partial perspective view of the vegetable transplanter according to an embodiment of the present invention; [Figure 2] (a) is a partial left side view of the vegetable transplanter according to the embodiment of the present invention; (b) is a partial rear view of the vegetable transplanter according to the embodiment of the present invention; [Figure 3](a) An explanatory diagram (part 1) of the use of slip ratio in the electric vegetable transplanter of the embodiment of the present invention, (b) An explanatory diagram (part 2) of the use of slip ratio in the electric vegetable transplanter of the embodiment of the present invention. [Figure 4] FIG. 1 is an explanatory diagram (part 1) of a simple battery stand for a vegetable transplanter according to an embodiment of the present invention. [Figure 5] FIG. 2 is an explanatory diagram (part 2) of a simple battery stand for a vegetable transplanter according to an embodiment of the present invention. [Figure 6] FIG. 1 is an explanatory diagram (part 1) of a battery protection mechanism of a vegetable transplanter according to an embodiment of the present invention. [Figure 7] FIG. 2 is an explanatory diagram (part 2) of the battery protection mechanism of the vegetable transplanter according to the embodiment of the present invention. [Figure 8] FIG. 3 is an explanatory diagram of the battery protection mechanism of the vegetable transplanter according to the embodiment of the present invention. [Figure 9] FIG. 4 is an explanatory diagram of the battery protection mechanism of the vegetable transplanter according to the embodiment of the present invention. [Figure 10] FIG. 5 is an explanatory diagram of the battery protection mechanism of the vegetable transplanter according to the embodiment of the present invention. [Figure 11] FIG. 1 is an explanatory diagram (part 1) of automatic control of greenhouse cultivation work using an infrared sensor in a vegetable transplanter according to an embodiment of the present invention. [Figure 12] FIG. 2 is an explanatory diagram (part 2) of automatic control of greenhouse cultivation work using an infrared sensor in a vegetable transplanter according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

[0028] Similarly, some components may not be shown in the drawings, or may be shown in perspective or in simplified form.

[0029] While explaining the operation of the vegetable transplanter according to the embodiment of the present invention, a work vehicle operation control method according to the invention, which is realized by the controller 130 and the like, will also be explained.

[0030] A vegetable transplanter is a specific example of a work vehicle according to the present invention.

[0031] (1) First, the configuration and operation of a vegetable transplanter according to an embodiment of the present invention will be specifically described with reference to FIGS. 1(a) and 1(b) and 2(a) and 2(b).

[0032] Here, Figure 1(a) is an oblique view of a vegetable transplanter according to an embodiment of the present invention, Figure 1(b) is a partial oblique view of a vegetable transplanter according to an embodiment of the present invention, Figure 2(a) is a partial left side view of a vegetable transplanter according to an embodiment of the present invention, and Figure 2(b) is a partial rear view of a vegetable transplanter according to an embodiment of the present invention.

[0033] We will specifically explain the electrification of vegetable transplanters such as potato transplanters.

[0034] The battery device 20 is a device that supplies power to the motor device 10, which generates power. The transmission device 30 is a device that changes the speed of the power generated by the motor device 10. The output pulley member 40 is a member that outputs power from the motor device 10. The input pulley member 50 is a member that inputs power to the transmission device 30. The belt member 60 is a member that transmits power from the motor device 10 to the transmission device 30 and is wound between the output pulley member 40 and the input pulley member 50. The brake member 70 is a member that presses the belt member 60 to cut off the transmission of power from the motor device 10 to the transmission device 30.

[0035] For example, the brake member 70 is normally separated from the belt member 60 by a spring force, but when the vehicle body is stopped, it is brought into contact with the belt member 60 against the spring force. Such a braking configuration does not require a power supply from the battery device 20, and is stable and inexpensive.

[0036] The tensioner member 80 is a member that suppresses slack in the belt member 60. When the brake member 70 cuts off the transmission of power, the tensioner member 80 does not suppress slack in the belt member 60.

[0037] For example, the tensioner member 80 is normally brought into contact with the belt member 60 by a spring force, but when the vehicle body is stopped, it is separated from the belt member 60 against the spring force. Such a tensioning configuration does not require a power supply from the battery device 20, and is stable and inexpensive.

[0038] The brake member 70 presses against the belt member 60 at the point where the belt member 60 contacts the input pulley member 50 .

[0039] It is also conceivable that the brake member 70 presses the belt member 60 at the location where the belt member 60 contacts the output pulley member 40. However, since a configuration is adopted in which the output pulley rotation shaft 41, which is directly connected to the motor device 10, slides relative to the belt member 60 when slack in the belt member 60 is not suppressed, it is desirable that the brake member 70 presses the belt member 60 at the location where the belt member 60 contacts the input pulley member 50.

[0040] The diameter of the output pulley member 40 is smaller than the diameter of the input pulley member 50 .

[0041] A braking function for stopping the vehicle is realized by pressing the belt member 60 at the point where the belt member 60 contacts the input pulley member 50. Even if the diameter of the input pulley member 50 is larger than the diameter of the output pulley member 40, a small gear diameter is provided before deceleration in the transmission device 30, so the torque required to realize the braking function is also relatively small. In this way, the application of a relatively small load by the brake member 70 causes not only the output pulley rotating shaft 41 but also the input pulley rotating shaft 51 to slip relative to the belt member 60, so damage to the transmission device 30 rarely occurs.

[0042] The tensioner member 80 presses the belt member 60 to prevent the belt member 60 from becoming loose.

[0043] The tensioner member 80 is connected to the brake member 70 by a wire 90. When the brake member 70 is in the off position, the wire 90 is pulled, and the tensioner member 80 is interlocked with the brake member 70 so as not to inhibit slack in the belt member 60.

[0044] The structure in which the tensioner member 80 is interlocked with the brake member 70 in this manner is simple and contributes to reducing the number of parts.

[0045] The motor device 10 is disposed at the front of the vehicle body. The battery device 20 is disposed above the motor device 10. The transmission device 30 is disposed behind the motor device 10.

[0046] The motor unit 10 protrudes below the bumper member 201 near the front of the vehicle body. The heavy motor unit 10 is positioned relatively low, achieving stable balance characteristics. The distance from the output pulley rotation shaft 41 to the input pulley member 50 is ensured, so the so-called belt winding angle of the belt member 60 is sufficiently large.

[0047] The direction of the output pulley rotation shaft 41 of the output pulley member 40 and the direction of the input pulley rotation shaft 51 of the input pulley member 50 coincide with the left-right direction of the vehicle body. The input pulley rotation shaft 51 is disposed above the output pulley rotation shaft 41 and behind the output pulley rotation shaft 41. The tensioner member 80 presses the belt member 60 from below.

[0048] A configuration in which the applied pressure and pressure application distance for pressing the belt member 60 by the tensioner member 80 are kept small is reliably realized while utilizing the free space to avoid interference with the belt member 60, etc.

[0049] The brake member 70 presses the belt member 60 from behind the input pulley member 50 .

[0050] A configuration in which the applied pressure and pressure application distance for pressing the belt member 60 by the brake member 70 are kept small is reliably realized while utilizing the free space to avoid interference with the belt member 60 and the like.

[0051] The wire 90 is routed between the tensioner member 80 and the brake member 70 via a relay pulley 91 disposed below the belt member 60 .

[0052] The intermediate pulley 91 creates a vacant space so that interference between the brake member 70 and the tensioner member 80 and the belt member 60 hardly occurs.

[0053] The transmission device 30 has a traveling power reduction mechanism 31 that reduces the speed of the power used to drive the traveling device 110. The traveling power reduction mechanism 31 has a counter shaft 31a that moves in conjunction with the input pulley rotating shaft 51 and is disposed below the input pulley rotating shaft 51, and a traveling power output shaft 31b that moves in conjunction with the counter shaft 31a and is disposed below the counter shaft 31a.

[0054] A vertically arranged configuration of the transmission device 30, which may also be called a traveling transmission device, is adopted. By arranging the motor device 10 and the battery device 20 near the front of the vehicle body, it is possible to secure space for arranging the motor device 10 and the battery device 20.

[0055] The input pulley member 50 for inputting power to the transmission device 30 is disposed above. The input pulley rotation shaft 51 is sufficiently spaced from the output pulley rotation shaft 41, ensuring ample layout space, allowing a relatively large input pulley member 50 to be used. This allows the transmission device 30 to achieve a large reduction ratio.

[0056] The second running power reduction gear pair 202 is provided on the left side of the input pulley rotation shaft 51. The counter gear and the like of the second running power reduction gear pair 202 are overlapped with the first running power reduction gear pair 202, thereby enabling a compact layout of the running power reduction mechanism 31 to be realized.

[0057] The reduced power is output to the traveling device 110 via side clutch mechanisms 33 provided on both sides of the traveling power output shaft 31b in the left-right direction of the vehicle body.

[0058] Of the two traveling power reduction gear pairs 202, the first traveling power reduction gear pair 202 is provided near the center of the traveling power output shaft 31b. A flange member 203 that functions as a traveling slide unit mounting member for changing the tread is provided on the traveling power output shaft 31b, and by utilizing a sufficient area when viewed from the side of the vehicle body, a traveling power reduction gear pair 202 with a large gear diameter can be inserted into the transmission device 30.

[0059] The left and right side clutches of the side clutch mechanism 33 are respectively arranged on both sides in the left-right direction of the vehicle body of the traveling power reduction gear pair 202 attached to the traveling power output shaft 31b. This makes it possible to realize a compact side clutch layout.

[0060] The flange members 203, which function as mounting members for the traveling slide unit for changing the tread, are provided on both sides of the traveling power output shaft 31b in the left-right direction of the vehicle body. The adoption of the unit mounting specifications realizes a user-friendly configuration that makes it easy to change the tread.

[0061] The transmission device 30 further includes a work power reduction mechanism 32 that reduces the power for driving the work device 120 .

[0062] The power for driving the working device 120 is separated from the power for driving the traveling device 110 by utilizing the input pulley rotating shaft 51. This power separation can be achieved with a relatively simple configuration. The configuration for adjusting the spacing between plants is also realized by utilizing a counter shaft 31a provided parallel to the input pulley rotating shaft 51 so that the traveling power reduction mechanism 31 and the working power reduction mechanism 32 can operate independently by inserting a coupling member or the like.

[0063] The work power reduction mechanism 32 is provided on the right side of the input pulley member 50 in the left-right direction of the vehicle body.

[0064] Three work power reduction gear pairs 206, which function as so-called planting reduction gear members, are provided on the right side of the input pulley rotation shaft 51. The reduction gears of the work power reduction gear pairs 206, which have relatively small gear diameters, are arranged at the top of the work power reduction mechanism 32, which helps make the case of the transmission device 30 more compact.

[0065] A plurality of work power reduction gear pairs 206 are attached to the work power output shaft 204 together with work power reduction shifters 205. The number of work power reduction gear pairs 206 is determined according to the specifications for changing the planting spacing. Because the torque for outputting the work power used for planting is smaller than the torque for outputting the traveling power, the arrangement of the work power reduction gear pairs 206, which have a relatively small gear diameter, can be reasonably and compactly realized.

[0066] The input pulley member 50 is provided on the side of the second traveling power reduction gear pair 202, not on the side of the working power reduction gear pair 206. Because the volume of the traveling power reduction gear pair 202 is smaller than the volume of the multiple working power reduction gear pairs 206, the input pulley member 50 can be compactly arranged on the side of the traveling power reduction gear pair 202, even with the case width of the transmission 30, which is thin in the left-right direction of the vehicle body. With this layout in which the input pulley member 50 is close to the traveling power reduction gear pair 202, the length of the shaft portion of the input pulley rotation shaft 51, which requires a thick shaft to utilize the large torque associated with the traveling power output, can be kept short.

[0067] The work power, which has been reduced for planting by the reduction gear of the work power reduction mechanism 32, is output from the work power output shaft 204 toward the rear of the vehicle body using a bevel gear or the like. Because the work power output position is almost the same as that of existing engine-powered vegetable transplanters, general-purpose planting units and the like can be used as is.

[0068] The work device 120 has a planting unit 121 that plants transplants in the field.

[0069] The running speed of the vehicle is changed and stopped by the operation control of the electric motor of the motor device 10. The so-called electric on / off switch of the machine is provided on the operation panel side. The hydraulic mechanism is provided according to existing specifications.

[0070] An electric switch for forward planting and an electric switch for reverse planting are also provided on the operation panel. The electric switch for forward planting can be turned on and off independently.

[0071] By using a so-called front clutch sensor together with the clutch lever 303, which is the front side clutch lever, the left and right side clutches of the side clutch mechanism 33 are automatically turned on and off by the motor.

[0072] This is expected to improve workability when transplants such as seed potatoes are present in the transplant shooter 301, and to make planting work more efficient.

[0073] A boarding worker sensor 112 is provided to detect whether or not a boarding worker is seated in the seat 111.

[0074] For example, the operator sensor 112, which is a limit switch sensor, is provided on the underside of the seat 111.

[0075] An implant sensor 122 is provided to detect whether an implant to be planted is being delivered to the implantation section 121 .

[0076] For example, the transplant sensor 122, which is a limit switch sensor, is provided on the underside of the transplant shooter 301, which is a so-called seed potato shooter.

[0077] A controller 130 is provided that controls the brake member 70 based on the detection of the operator sensor 112 and the implant sensor 122 .

[0078] The roller sensor 302, which is a proximity sensor, is provided on a so-called ridge guide roller for following the ridges.

[0079] When the operator is not seated in the seat 111 and the transplants to be planted are not being supplied to the planting section 121, the controller 130 controls the vehicle body to stop by causing the brake member 70 to press the belt member 60.

[0080] That is, when both the on-board operator sensor 112 and the implant sensor 122 are off, the vehicle body is stopped in a so-called on-the-spot manner.

[0081] The controller 130 controls the traveling speed so that it is maintained at a predetermined traveling speed level when the operator is seated in the seat 111 and transplants to be planted are being supplied to the planting section 121.

[0082] That is, when both the on-board worker sensor 112 and the transplant sensor 122 are on, the planting unit 121 performs a work operation.

[0083] The controller 130 controls the traveling speed so that it is kept lower than a predetermined traveling speed level when the operator is not seated in the seat 111 and transplants to be planted are being supplied to the planting section 121.

[0084] That is, when the operator sensor 112 is off but the plant sensor 122 is on, the machine idles at a slow operating speed. The forward planting power switch and the reverse power switch are both off.

[0085] (2) Next, the configuration and operation of the vegetable transplanter according to the embodiment of the present invention will be described in more detail.

[0086] (2a) With reference primarily to Figures 3(a) and 3(b), the use of slip ratio in motorized vegetable transplanters will be specifically explained.

[0087] 3(a) and 3(b) are explanatory diagrams (parts 1 and 2) of the use of slip ratio in the motorized vegetable transplanter according to the embodiment of the present invention.

[0088] A battery 401, a hydraulic motor 402 as the so-called hydraulic motor of the main machine, a rear wheel motor 403, a chain case 404, a traverse motor 405, a seedling frame sensor 406 as a limit sensor, and the like are provided.

[0089] A possible configuration for adjusting the spacing between plants is to detect the slip rate of the rear wheel motor 403 and automatically control the motor rotation speed for planting control.

[0090] (2b) The simple battery stand 501 will be specifically described with reference mainly to FIGS.

[0091] 4 and 5 are explanatory views (parts 1 and 2) of a simple battery stand 501 for a vegetable transplanter according to an embodiment of the present invention.

[0092] As shown in FIG. 4, the space around the battery case 502 provides a sufficiently large free space.

[0093] As shown in FIG. 5, a temporary battery stand 501 on which a new battery can be placed parallel to the battery stored inside the battery case 502 may be provided on the left side of the battery case 502. The battery stand 501 may be provided on the top surface of the battery case 502, making battery replacement easy and hassle-free, even if the battery is heavy. The user removes the old battery from the battery case 502 on the vehicle body with both hands, and while holding the old battery with one hand, replaces it with the new battery placed on the battery stand 501 with the other, and then stores the new battery in the battery case 502 with both hands. Even if the remaining battery power drops significantly during work, the battery can be replaced in the field.

[0094] A configuration is also conceivable in which a simple battery stand 501 on which a battery can be placed is provided on the inside surface of the lid of the battery case 502. By providing a pivot point at the bottom of the cover, the lid can be opened 90 degrees. Because the simple battery stand 501 is retractable, dust is less likely to adhere to the simple battery stand 501, and damage to the inside of the battery case 502 is less likely to occur due to dust adhering to the battery placed on the simple battery stand 501. Such a configuration that uses a pivot point at the bottom of the cover ensures stable support of the cover when the lid is opened 90 degrees.

[0095] A configuration is also conceivable in which a simple battery stand 501 on which the battery can be placed is provided on the bottom end plate or the like on the inner surface of the lid of the battery case 502. By providing a pivot point on the side of the cover, the lid can be opened 90 degrees. This configuration using a pivot point on the side of the cover reduces the adhesion of dirt, sweat, and the like to the simple battery stand 501 when the lid is opened 90 degrees.

[0096] (2c) The battery protection mechanism will now be specifically described with reference primarily to FIGS. 6 to 10.

[0097] 6 to 10 are explanatory diagrams (parts 1 to 5) of the battery protection mechanism of the vegetable transplanter according to the embodiment of the present invention.

[0098] As shown in FIG. 6, the battery 600 can be seen by opening the front cover 602 of the battery case toward the front.

[0099] As shown in Figures 7 and 8, a conceivable embodiment is one in which a handle 601 is provided as an auxiliary handle for withdrawal, parallel to the direction of insertion of the battery case, on the upper side perpendicular to the battery terminal surface 603, at a location farther from the terminals of the battery terminal surface 603 than the center of gravity of the battery drawer. This can protect the battery terminal surface 603 even if the user unintentionally drops the heavy battery 600 into the field. When the user holds the battery 600 by the handle 601, the battery terminal surface 603 normally faces upward, so the battery terminal surface 603 can be protected from damage caused by a drop. An embodiment is also conceivable in which the handle 601 is provided on a side surface perpendicular to the battery terminal surface 603, but this may require the battery case to be large in size to avoid interference with the handle 601.

[0100] As shown in Figures 9 and 10, an embodiment is also conceivable in which the handle 601 is provided on the upper surface perpendicular to the battery terminal surface 603, on the opposite lower side closer to the terminals of the battery terminal surface 603 than the central center of gravity. This can reduce the effects of the user's sweat during operation. When the user holds the battery 600 by the handle 601, the battery terminal surface 603 normally faces downward, so the battery terminal surface 603 can be protected from sweat. Because the handle 601 is provided below the central center of gravity for the complete battery withdrawal, the final battery withdrawal operation is easy. Of course, the handle 601 may be provided at both the upper and lower positions described above.

[0101] A rotatable cover is attached to the battery terminal surface 603 together with an arm attached to a fulcrum, and when the battery 600 is installed in the battery case, the cover is peeled open to expose the terminals, and when the battery 600 is removed from the battery case, the cover returns to its original position due to spring force. Even when the often-heavy battery 600 is placed in a field for battery replacement, dirt and the like are unlikely to adhere to the battery terminal surface 603. When the battery 600 is placed in a field for battery replacement, not only is dirt unlikely to adhere to the battery terminal surface 603, but the battery terminal surface 603 can also be protected from damage caused by dropping the battery 600 into the field.

[0102] (2d) With reference mainly to Figures 11 and 12, the automatic control of greenhouse cultivation work using an infrared sensor will be specifically described.

[0103] 11 and 12 are explanatory diagrams (parts 1 and 2) of automatic control of greenhouse cultivation work using an infrared sensor of a vegetable transplanter according to an embodiment of the present invention.

[0104] As shown in FIG. 11, automatic tilling and planting inside the cultivation house 701 can be realized by using a blocking or reflective infrared sensor.

[0105] As shown in FIG. 12, automatic tilling and planting can be realized based on a flowchart for such automatic control.

[0106] That is, detection is performed by the first pressure sensor unit 704 having left and right pressure sensors near the start point (step S1), and straight travel begins, followed by forward movement (step S2). Detection is performed by the first intercept type infrared sensor unit 702 near the start point and the second intercept type infrared sensor unit 702 near the goal point (step S3), and switching between straight travel and turning is successively performed, but when detection is performed by the second pressure sensor unit 704 having left and right pressure sensors near the goal point (step S4), straight travel ends and travel is stopped (step S5). Of course, until such detection is performed by the second pressure sensor unit 704, reactions are detected by the reflective infrared sensor unit 703 having two reflective infrared sensors, and turns to the left are successively performed (step S6), and the position of the furrow is adjusted to smoothly transition to straight travel as described above.

[0107] 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.

[0108] Furthermore, the recording medium of the invention related to the present invention is a recording medium on which a program is recorded for causing a computer to execute all or some of the operations of all or some 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.

[0109] It should be noted that the above-mentioned "some steps (or processes, operations, actions, etc.)" means one or some of the multiple steps.

[0110] Furthermore, the above-mentioned "operations of steps (or processes, operations, actions, etc.)" means the operations of all or part of the above-mentioned steps.

[0111] 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.

[0112] The recording medium also includes a ROM (Read Only Memory).

[0113] 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.

[0114] As described above, the configuration of the present invention may be realized in software or hardware. [Industrial Applicability]

[0115] The work vehicle of the present invention can improve usability and is useful for use as a work vehicle such as a vegetable transplanter. [Explanation of symbols]

[0116] 10 Motor device 20 Battery equipment 30 Transmission device 31 Traveling power reduction mechanism 31a Counter shaft 31b Travel power output shaft 32 Work power reduction mechanism 33 Side clutch mechanism 40 Output pulley member 41 Output pulley rotating shaft 50 Input pulley member 51 Input pulley rotating shaft 60 Belt member 70 Brake member 80 Tensioner member 90 wire 91 Relay pulley 110 Running gear 111 seats 112 Onboard worker sensor 120 Work equipment 121 Planting section 122 Implant Sensor 130 Controller 201 Bumper parts 202 Running power reduction gear pair 203 Flange member 204 Working power output shaft 205 Working power reduction shifter 206 Working power reduction gear pair 301 Implant Shooter 302 Roller Sensor 303 clutch lever 401 Battery 402 Hydraulic Motor 403 rear wheel motor 404 Chain Case 405 Traverse motor 406 Seedling Frame Sensor 501 Simple Battery Stand 502 Battery Case 600 battery 601 Toride 602 Lid 603 Battery terminal surface 701 Cultivation House 702 Blocking type infrared sensor unit 703 Reflective infrared sensor unit 704 Pressure Sensor Unit

Claims

1. a motor device that generates power; a battery device for supplying power to the motor device; a transmission device that changes the speed of the power generated by the motor device; an output pulley member for outputting the power from the motor device; an input pulley member that inputs the power to the transmission device; a belt member wound between the output pulley member and the input pulley member to transmit the power from the motor device to the transmission device; a brake member that presses the belt member to stop the transmission of power from the motor device to the transmission device; A work vehicle characterized by comprising:

2. The belt drive system further includes a tensioner member that suppresses slack in the belt member.

2. The work vehicle according to claim 1, wherein the tensioner member does not suppress the slack in the belt member when the brake member cuts off the transmission of the power.

3. 3. The work vehicle according to claim 2, wherein the brake member presses the belt member at a location where the belt member contacts the input pulley member.

4. the diameter of the output pulley member is smaller than the diameter of the input pulley member; 4. The work vehicle according to claim 3, wherein the tensioner member suppresses the slack in the belt member by pressing the belt member.

5. The tensioner member is connected to the brake member by a wire, 5. The work vehicle according to claim 4, wherein when the brake member cuts off the transmission of the power, the wire is pulled, thereby causing the tensioner member to be linked to the brake member so as not to suppress the slack in the belt member.

6. The motor device is disposed at the front of the vehicle body, the battery device is disposed above the motor device; the transmission device is disposed behind the motor device, a direction of an output pulley rotation shaft of the output pulley member and a direction of an input pulley rotation shaft of the input pulley member coincide with the left-right direction of a vehicle body; the position where the input pulley rotation shaft is disposed is above the output pulley rotation shaft and behind the output pulley rotation shaft, The tensioner member presses the belt member from below the belt member, the brake member presses the belt member from behind the input pulley member, 6. The work vehicle according to claim 5, wherein the wire is routed between the tensioner member and the brake member via an intermediate pulley disposed below the belt member.

7. the transmission device has a traveling power reduction mechanism that reduces the speed of the power for driving the traveling device, the traveling power reduction mechanism includes a counter shaft that moves in conjunction with the input pulley rotation shaft and is disposed below the input pulley rotation shaft, and a traveling power output shaft that moves in conjunction with the counter shaft and is disposed below the counter shaft, 7. The work vehicle according to claim 6, wherein the power after the reduction is output to the traveling device via a side clutch mechanism provided on both sides of the traveling power output shaft in the left-right direction of the vehicle body.

8. the transmission device further includes a work power reduction mechanism that reduces the speed of the power for driving the work device, 8. The work vehicle according to claim 7, wherein the work power reduction mechanism is provided to the right of the input pulley member in the left-right direction of the vehicle body.

9. The working device has a planting unit that plants transplants in a field, A boarding worker sensor is provided to detect whether or not a boarding worker is seated in the seat, an implant sensor for detecting whether the implant to be planted is being delivered to the implanting section; a controller is provided that controls the brake member based on detection of the operator sensor and the implant sensor; 9. The work vehicle according to claim 8, wherein the controller controls the vehicle body to stop by causing the brake member to press the belt member when the operator is not seated in the seat and the transplants to be planted are not being supplied to the planting section, controls the vehicle body to maintain a predetermined running speed level when the operator is seated in the seat and the transplants to be planted are being supplied to the planting section, and controls the vehicle body to be kept slower than the predetermined running speed level when the operator is not seated in the seat and the transplants to be planted are being supplied to the planting section.

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