JP2006187237A - Boom type working vehicle and hand grip type controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a boom type working vehicle in which a driver can watch a boom and simultaneously easily control the boom, even when the boom is extended in either of right and left directions. <P>SOLUTION: This boom type working vehicle 1 having the boom 9 whose extension direction can be switched in the right direction R or in the left direction L, behind a traveling machine frame 3, and having a driver's seat at a position in the front of the boom 9 of the traveling machine frame 3 is characterized by having a position-changeable control portion 50 having operation members 53, 54, 55 to be controlled by the driver D watching the stretched boom 9 placed behind the driver's seat. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a boom-type work vehicle, and more specifically, provided at the rear of the traveling machine body with a boom capable of switching the extending direction toward the left outer side and the right outer side, and at a position ahead of the boom of the traveling machine body. The present invention relates to a boom type work vehicle having a driver's seat. The present invention also relates to a hand-held controller that is suitable for use as an operation unit for controlling the boom in the boom-type work vehicle.

  As an example of such a boom type work vehicle, a so-called one-boom type agricultural boom sprayer is known (see Patent Document 1). According to the one-boom sprayer, the boom is extended to one of the left and right sides at the rear of the traveling machine body, and while traveling on the field, it is disposed downward at predetermined intervals along the boom length direction. With a large number of spray nozzles provided, it is possible to spread one side of a crop with a wide range of chemicals. In this case, the driver, in parallel with the driving operation of the traveling machine body by a steering handle or the like, the boom that will be located on the right diagonally rear or left diagonally rear, crops and obstacles in the field, When the boom is likely to come into contact with a crop or the like, before that, by an operation member such as an operation lever disposed at a predetermined position near the driver seat, It is necessary to perform retract control of the boom.

By the way, in the one-boom sprayer, the boom can be switched (changed) between a leftwardly extended position and a rightwardly extended position of the traveling machine body. For this reason, first, the extending direction of the boom can be appropriately changed to the right and left in the direction in which it is easy to spray according to the topography of the spraying work site. Secondly, at the end of the culm reached by forward driving, the boom extension direction is switched to the opposite direction to the previous direction, and the same route is returned to the reverse direction while spraying on the opposite left and right crops. It can also be done. If such a spraying method is adopted, there is no need to provide a headland for changing the direction of the traveling machine body at the end portion of the bag, so there is an advantage that an effective planting area can be increased.
Japanese Utility Model Publication No. 63-27805 (refer to FIG. 3 in particular)

  However, when the boom extending direction is switched, the neck or body twist direction for viewing the rear boom is reversed left and right for the driver, whether forward or backward. turn into. Therefore, even if the operation member is arranged on the left side or the right side of the driver's seat, there is a problem that the operation member becomes extremely difficult to operate in at least one of the boom extending directions. . This problem is particularly noticeable in the case of reverse traveling where the operation of the traveling machine itself becomes difficult.

  The present invention has been made in view of the above circumstances. Regardless of whether the boom is extended on the left outer side or the right outer side of the traveling aircraft body, the boom-related image is visually observed from the driver's seat. It is an object of the present invention to provide a boom type work vehicle that can be easily controlled.

  The present invention is also intended to provide a hand-held controller suitable for use as a boom operation unit of the boom type work vehicle.

  In order to solve the above-mentioned problems, a boom type work vehicle according to the present invention includes a boom at the rear part of a traveling machine body that can switch a extending direction toward the left outer side and the right outer side, and the boom of the traveling machine body Boom-type work vehicle having a driver's seat at a more forward position, and a position-changeable operation having an operation member controlled and operated by a driver who visually observes the boom in a rearward position from the driver's seat It is provided with the part (Claim 1).

  According to the boom type work vehicle, the driver changes the position for each of the case where the boom is extended toward the left outer side and the case where the boom is extended toward the right outer side. It is possible to operate the operation member by moving a possible operation unit from the driver's seat to a position where it can be easily controlled while viewing the boom at a rear position. Therefore, even when the boom is extended in the left or right direction, the operation member can be easily operated.

  As a preferred embodiment, a fixed-position type operation unit having a first operation member is provided, and the fixed-position type operation unit extends the boom that is extended either left or right to the driver. Is fixedly disposed at a position where the first operation member can be easily operated while being visually observed from the driver's seat, and the operation member of the operation portion whose position can be changed is the same control as the first operation member. It can also be set as the 2nd operation member provided with the function (Claim 2).

  In the embodiment, when the boom is extended outward, the driver is in a position where the driver can easily operate while visually checking the boom from the driver's seat. The boom or the like can be controlled by the first operating member of the part. On the contrary, when the boom is extended in the direction opposite to the one outward direction, the boom and the like can be controlled by the second operation member of the operation unit capable of changing the position. . Therefore, even when the boom is extended in the left or right direction, the boom or the like can be easily controlled.

  As a preferred embodiment, all the operation members necessary for controlling the boom are disposed in the position-fixed operation unit, and all the operations are performed in the position-changeable operation unit. Of the members, only an operation member having the same control function as that of a specific operation member may be provided. In this way, the number of operation members that are functionally duplicated between the position-fixed type operation unit and the position-changeable operation unit can be reduced. Is also preferable because it saves money. Further, since the number of operation members disposed in the position changeable operation unit is smaller than the number of operation members disposed in the position fixed operation unit, the position changeable operation unit is made as compact as possible. There is also an advantage that the handling property becomes good.

  As a preferred embodiment, the second operating member may be an operating member for swinging the boom tip end side up and down (Claim 4). In this way, the collision of the boom with an obstacle or the like can be avoided in the most rational manner, which is more preferable.

  As a preferred embodiment, the control command from the operation unit capable of changing the position is transmitted via a wired control command transmission system extending from the fixed operation unit. The position changeable operation unit and the position fixing type operation unit may be connected by wiring (claim 5). In this way, both the control command issued from the position-fixed operation unit and the control command issued from the position-changeable operation unit are transmitted to the control destination through wiring, Compared to the above, the reliability of control command transmission is increased, which is more preferable. Further, since the control command issued from the position changeable operation unit is reliably transmitted to the control destination via the wired control command transmission system extending from the position fixed type operation unit, the control system Can be simplified, and the operation part whose position can be changed can be prevented from being dropped or lost.

  As a preferred embodiment, the operation unit capable of changing the position includes a bar-shaped gripping unit having a thickness suitable for the driver to hold with one hand, and the operation member of the operation unit capable of changing the position is provided. Further, it may be arranged at a position where it can be operated with a finger of a hand that grips the grip portion (claim 6). In this way, the operation part whose position can be changed can be easily held with one hand, and the operation member can be easily operated with one hand held.

  Next, the hand-held controller according to the present invention includes a boom at the rear part of the traveling machine body, the boom being switchable in the extending direction toward the left outer side and the right outer side, and is operated at a position ahead of the boom of the traveling machine body. A hand-held controller for a boom-type work vehicle having a seat, comprising an operation member that is controlled and operated by a driver who views the boom in a stretched state from the driver's seat (Claim 7).

  According to the present invention, the driver, for each of the case where the boom is extended toward the left outer side of the traveling aircraft body and the case where the boom is extended toward the right outer side, The operation member can be operated by moving the boom from the driver's seat to a position where the boom can be easily controlled. Therefore, even when the boom is extended in the left or right direction, the operation member can be easily operated.

  As a preferred embodiment of the hand-held controller, the operation member has a control function identical to that of the first operation member disposed in the position-fixed operation unit in the vicinity of the driver's seat. It may be an operating member (claim 8). In this case, the driver uses the operation member disposed in one of the position-fixed operation unit and the hand-held controller, which is easy to operate, according to the extending direction of the boom. The boom and the like can be controlled from the driver seat. Therefore, even when the boom is extended in the left or right direction, the control operation of the boom or the like can be easily performed.

  As a preferred embodiment, the position is controlled so that the control command from the second operation member is transmitted via a wired control command transmission system extending from the position-fixed operation unit. It may be possible to connect to the fixed operation unit by wiring (claim 9). In this way, since the transmission of the control command from the handheld controller is performed using the wired control command transmission system extending from the position fixing type operation unit, the control system can be simplified. And so on.

  As a preferred embodiment of the hand-held controller, it is provided with a rod-shaped gripping part having a thickness suitable for gripping with one hand, and the operation member is at a position where it can be operated with a finger of the hand gripping the gripping part. It may be arranged (claim 10). In this way, the hand-held controller can be easily held with one hand, and the operation member can be easily operated with the one hand held.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a plan view of a boom sprayer as a boom type work vehicle according to a preferred embodiment of the present invention, FIG. 2 is a rear view of the boom sprayer of FIG. 1, and FIG. It is a perspective view of this operation part.

  As shown in FIG. 1, a boom sprayer 1 according to the present embodiment is a so-called one-boom type agricultural sprayer, and a hitch 4 such as a three-point type is provided at the rear of a traveling body 3 such as a riding tractor having a driver's seat 2. The spraying device 5 directly mounted via the The spraying device 5 includes a mount frame 6 connected to the hitch 4, a spray liquid tank 7 loaded on the mount frame 6, and a boom device 8 that is also attached to the mount frame 6. . A large number of spray nozzles 10 are arranged at predetermined intervals along the length direction on the lower surface of a telescopic boom 9 (maximum extension: about 10 to 17 m) that constitutes the boom device 8 and has a well-known configuration. Has been.

  The sprayed liquid in the tank 7 is connected to the traveling machine body 3 by, for example, a high-pressure plunger-type spraying pump 12 driven by an internal combustion engine 11 as a travel drive source, and a piping system such as a hose (not shown). And is sprayed toward the multiple spray nozzles 10 and sprayed from the multiple spray nozzles 10 to the crops on the ground. According to the boom sprayer 1, the one-side spray type boom 9 is extended to the left or right one of the left and right sides of the traveling machine body 3 and traveled wide by the multiple spray nozzles 10 at a time. One side spraying work can be performed.

  As shown in FIG. 1, the boom device 8 includes a boom opening / closing mechanism 13, a boom turning mechanism 14, and a boom telescopic mechanism 15 as mechanisms for performing position control or posture control of the boom 9. Further, as shown in FIG. 2, a boom lifting mechanism 16 and a boom up / down swing mechanism 17 are provided. As shown in FIG. 1, these mechanisms 13 to 17 function as position-fixed operation units that are fixedly disposed at positions (for example, right side) that are easy for the driver D of the driver seat 2 to operate. The control box 18 can be remotely controlled.

  The mechanisms 13 to 17 are known per se in the field of boom sprayers, and will be briefly described below.

As shown in FIG. 1, the boom opening / closing mechanism 13 includes an extended position O (O ₁ ) that extends the boom 9 to one outer side LR on the left and right of the traveling machine body 3, and the left and right of the traveling machine body 3. And a storage position C extending along one side surface (for example, the right side surface). The boom opening / closing mechanism 13 includes a boom opening / closing pivot shaft 19 that pivots the boom 9 horizontally on the traveling machine body 3 side, and a boom opening / closing pivot shaft 19 that pivots the boom 9 around the boom opening / closing pivot shaft 19. 3 and a boom opening / closing drive actuator 20 that is driven to open / close along the front-rear direction F-B.

In the present embodiment, the longitudinal swinging vertical frame 21 that supports the base end portion 9a of the boom 9 is relative to the distal end portion 22a of the left and right turning frame 22 on the traveling machine body 3 side by the boom opening / closing pivot shaft 19. It is supported rotatably. The boom opening / closing actuator 20 is installed between the left / right turning frame 22 and the front / rear swinging vertical frame 21. As the boom opening / closing drive actuator 20, for example, a linear motion actuator of an appropriate type such as a hydraulic type can be used. When the boom opening / closing drive actuator 20 is expanded and contracted, the boom 9 is located on the left and right sides of the traveling machine body 3 around the boom opening / closing pivot shaft 19 (in the example of FIG. The right spreading position O ₁ (extended position O) extended outward) and the non-spreading operation extending along the left and right side surfaces of the traveling machine body 3 (the right side surface of the traveling machine body 3 in the example of FIG. 1). It rotates horizontally between the storage position C and the hour. As shown in FIG. 3, the boom opening / closing drive actuator 20 is operated by swinging a boom opening / closing operation lever 23 (as viewed in FIG. 3 in the left-right direction) disposed as an operation member in the control box 18. It can be controlled remotely from the driver's seat.

Next, as shown in FIG. 1, the boom turning mechanism 14 extends the boom 9 to the right outer side R of the traveling machine body 3, the right spreading position O _{1 serving} as a normal spreading position, and the traveling It is a mechanism for allowing the left spraying position O ₂ extended to the left outer side L of the machine body 3 to turn in a horizontal plane. With this mechanism, the driver D can freely change which of the left and right sides the spraying is performed in the traveling direction F of the traveling machine body 3.

  The boom turning mechanism 14 includes a boom horizontal turning pivot 24 that pivotally supports the left and right turning frame 22 on the traveling machine body 3 side in a horizontal plane, and the boom horizontal turning pivot 24 around the boom horizontal turning pivot 24. And a boom turning drive actuator 25 that drives 9 to turn left and right. A base end portion 22b of the revolving frame 22 is supported by the boom horizontal revolving pivot shaft 24 on a lifting frame 26 on the mount frame 6 side so as to be relatively rotatable at a central position of the left and right width of the traveling machine body 3. ing. The boom turning drive actuator 25 is installed between the elevating frame 26 and the horizontal turning frame 22. As the boom turning drive actuator 25, for example, a linear motion actuator of an appropriate type such as a hydraulic type can be used. When the boom turning drive actuator 25 is expanded and contracted, the tip 22a side of the turning frame 22 is rotated around the rear side of the traveling machine body 3 around the boom turning pivot shaft 24 through an appropriate multi-joint link mechanism. Turn 180 degrees left and right. Along with this, the extending direction of the boom 9 supported by the horizontal turning frame 22 is switched between the right outer side R and the left outer side L of the traveling machine body 3. As shown in FIG. 3, the boom turning drive actuator 25 is operated by swinging a boom turning operation lever 27 disposed in the control box 18 as an operation member (to the left and right as viewed in FIG. 3). It can be controlled remotely from the driver's seat 2.

  Next, the boom expansion / contraction mechanism 15 is a mechanism for making the spreading width of the boom 9 adjustable by making the boom 9 telescopic as shown in FIG. In addition, by using this mechanism, the boom 9 can be prevented from colliding with an obstacle. The boom telescopic mechanism 15 enables the boom 9 to have a maximum length when it is extended, for example, about 10 to 17 m.

  In the present embodiment, the boom 9 is formed from a plurality of (for example, two) boom members 28 and 29, and the other moving side boom member 29 is relative to the one fixed side boom member 28. It is connected to the telescopically. Then, a forward or reverse rotation of a hydraulic motor 30 such as a hydraulic motor which is arranged in the base end portion (the base end portion of the boom 9) 9a of the fixed boom member 28 as a boom telescopic drive actuator and which can freely rotate forward and backward. Accordingly, a wire as a boom expansion / contraction driving force transmission member (not shown) is reciprocated along the boom 9, and the movement-side boom member 29 is expanded and contracted along the fixed-side boom member 28. As shown in FIG. 3, the boom telescopic drive actuator 30 is a boom telescopic operation lever 31 (in the vertical direction as viewed in FIG. 3) common to the boom turning operation lever 27 disposed in the control box 18. It can be remotely controlled from the driver's seat 2 by a swinging operation.

  Although not shown in the figure, the spray from each spray nozzle 10 disposed along the moving boom member 29 is provided between the fixed boom member 28 and the moving boom member 29. However, a nozzle cock automatic opening / closing device having a well-known configuration is arranged so that it is automatically controlled in synchronism with the expansion and contraction operation of the moving-side boom member 29. Generation | occurrence | production of the overlap spraying part by the said spray nozzle 10 of the member 28 and the said spray nozzle 10 of the said movement side boom member 29 is prevented.

  Next, as shown in FIG. 2, the boom lifting mechanism 16 is a mechanism that allows the entire boom 9 to move up and down and allows the height of spraying ground by the boom 9 to be adjusted. In the present embodiment, a pair of right and left lifting guide rails 32 and 33 that are fixed to the mount frame 6 and extend in the vertical direction are disposed behind the spray liquid tank 7 as the lifting guide members of the lifting frame 26. ing. A plurality of rollers 34 that fit in the lift guide rails 32 and 33 so as not to be detached and roll in the vertical direction are rotatably supported by the lift frame 26.

  On the side of the pair of left and right guide rails 32 and 33, a linear motion type boom raising / lowering drive actuator 35 such as a hydraulic type is disposed so as to extend in the up and down direction. 37 is rotatably attached. Then, both end portions (not shown) of the wire 38 wound around the movable pulley 37 are connected to the horizontal frame 39 laid between the elevating guide rails 32 and 33 and the elevating frame 26, respectively. Yes. When the boom raising / lowering drive actuator 35 is extended and contracted, the raising / lowering frame 26 is raised / lowered via the wire 38, so that the horizontal turning frame 22 and the boom 9 are integrated with each other, and the pair of right and left lifting guide rails 32 are arranged. , 33 move up and down. As shown in FIG. 3, the boom raising / lowering drive actuator 35 is operated by swinging a boom raising / lowering operating lever 40 (as viewed in FIG. 3 in the vertical direction) disposed as an operating member in the control box 18. It can be controlled remotely from the driver's seat 2.

  Next, as shown in FIG. 2, the boom up-and-down swing mechanism 17 causes the tip 9b side of the boom 9 to swing up and down, and the boom 9 is caused by unevenness of the traveling road surface of the traveling machine body 3 or the like. This is a mechanism for preventing the tip 9b side from colliding with a crop. In addition, the mechanism 9 can be used to avoid the boom 9 from colliding with an obstacle.

  The boom up-and-down swing mechanism 17 includes a boom up-and-down swing support shaft 41 that pivotally supports the boom 9 on the longitudinal swing vertical frame 21 and a boom up-and-down swing support shaft 41. And a boom up-and-down swing drive actuator 42 that drives the boom 9 to swing up and down.

  In the present embodiment, the base end portion 9a of the boom 9 is supported by the boom vertical swing pivot shaft 41 on the vertical swing vertical frame 21 so as to be relatively rotatable. The boom up / down swing drive actuator 42 is installed between the longitudinal swing vertical frame 21 and the boom 9. As the boom up-and-down swing drive actuator 42, for example, an appropriate type of linear motion actuator such as a hydraulic type can be used. When the boom up-and-down swing drive actuator 42 is expanded and contracted, the end portion 9b side of the boom 9 swings up and down around the boom up-and-down swing support shaft 41. As shown in FIG. 3, the boom up-and-down swing drive actuator 42 is a boom up-and-down swing operation lever 43 (up and down as viewed in FIG. 3) common to the boom opening / closing operation lever 23 provided in the control box 18. The telescopic operation can be remotely controlled from the driver seat 2 by a swinging operation (in the direction).

  In addition, although illustration of specific piping is abbreviate | omitted, in each said mechanisms 13-17, supply of the hydraulic fluid to each said actuator 20,25,30,35,42 at the time of being hydraulic type is as follows. For example, it can be performed by a hydraulic pump 44 (see FIG. 1) mounted on the traveling machine body 3 and driven by the internal combustion engine 11.

  Next, with reference to FIG. 3, the operation part of each said actuator 20, 25, 30, 35, 42 is demonstrated.

  As described above, the actuators 20, 25, 30, 35, and 42 are controlled by the boom opening / closing operation lever 23 disposed as an operation member in the control box 18 that is a position-fixed operation unit. By operating the boom turning operation lever 27, the boom telescopic operation lever 31, the boom lifting / lowering operation lever 40, and the boom up / down swing operation lever 43, the operation is performed remotely from the driver's seat 2. be able to. In the present embodiment, from the viewpoint of integrating the operation levers, the boom opening / closing operation lever 23 and the boom up / down swing operation lever 43 are a single common lever that is swing-operated in directions orthogonal to each other, Similarly, the boom turning operation lever 27 and the boom telescopic operation lever 31 are a single common lever that is swung in directions orthogonal to each other. However, the present invention is not limited to this. You may arrange | position in the said control box 18 as a lever.

  In addition to all the operating levers 23, 27, 31, 40, 43 necessary for controlling the boom 9, other operating members may be provided in the control box 18 as necessary. it can. For example, a main switch 45 that is an operation member for turning on and off the control circuit of the control box 18 and a spray control valve (not shown) including an electromagnetic valve or the like with the spray pump 12 being operated are opened and closed. At least the spray control switch 46 for controlling the spray from the spray nozzle 10, the pressure adjusting lever 47 for controlling the discharge pressure of the spray pump 12, and the tip 9 b of the boom 9 are arranged. A caution light operating lever 49 or the like for turning on or off a caution light 48 (see FIG. 1) such as Patrite (registered trademark) can be provided. When the boom sprayer 1 travels on a public road or the like with the boom 9 folded and stored in the storage position C, the warning light 48 informs the surroundings of the boom 9 protruding forward. It is arranged for the purpose of calling out.

  The control box 18 can be disposed at an appropriate position in the vicinity of the driver's seat 2, for example, on the left side or the right side of the driver's seat 2 in consideration of operability. In the present embodiment, there are many right-handed drivers, forward rightward spraying performed by expanding the boom 9 to the right outward R is normal spraying, and the storage position of the boom 9 is the traveling aircraft body. In consideration of the right side of 2 and the like, the control box 18 is fixedly disposed on the right side of the driver's seat 2 as shown in FIG. Therefore, the driver D can operate the operation levers of the control box 18 with the right hand while sitting on the driver's seat 2 while viewing the boom 9 behind.

As shown in FIG. 1, in the present embodiment, the boom 9 can be controlled by a hand-held controller 50 as an operation unit whose position can be changed in addition to the position-fixed control box 18. It has become. This is the boom 9 also during forward right spraying being stretched to the right spraying position O _1, even when backward left spraying said boom 9 is stretched to the left spraying position O _2, the vehicle body 3 The driver D who is driving is able to operate the boom 9 with his / her hand which is easy for the driver 9 to observe while properly looking at the tip 9b side of the boom 9 diagonally right rearward or diagonally left rearward from the driver seat 2. This is to enable easy and accurate control of the above.

  The hand-held controller 50 and the control box 18 are connected to each other by a hard wiring 51 that can withstand overuse and has a predetermined length that allows the hand-held controller 50 to be freely repositioned around the driver's seat 2. Yes. A control command issued from the hand-held controller 50 is transmitted to the control destination via a wired control command transmission system using a wiring 52 extending from the control box 18. For this reason, the reliability of control command transmission from the control box 18 and the handheld controller 50 is higher than that of the wireless type, which is preferable. Further, the control system can be simplified, and the hand-held controller 50 can be prevented from dropping or lost, which is more preferable.

  As shown in FIG. 3, in the present embodiment, the hand-held controller 50 has a specific first of all the operation members related to the boom 9 or spraying disposed in the control box 18. Only the second operation member having the same control function as the one operation member is provided. In the present embodiment, in consideration of the operation frequency during the spraying operation, the specific first operation member is the boom telescopic operation lever 31, the boom up / down swing lever 43, and the spray control switch 46, Correspondingly, the second operation member is a boom telescopic operation lever 53, a boom up / down swing operation lever 54, and a spray control switch 55.

  In the present embodiment, the second operation member disposed in the hand-held controller 50 is set as described above, because the operation members 53, 54, and 55 are most frequently used during the spraying operation. Because it is operated. That is, during the traveling spraying operation, the driver D is located at his / her right diagonally rearward or left diagonally rearward B in parallel with the driving operation of the traveling vehicle body 3 by the steering handle 56 as a steering device. Being careful to change the relative position of the boom 9 and crops and obstacles in the field, there are irregularities on the running road surface, there are obstacles such as piles and sprinklers in the field, When the boom 9 is likely to come into contact with a crop or the like, the boom 9 needs to be retracted before that. The concrete retracting operation of the boom 9 is generally performed in the form of contracting the boom 9 or swinging the boom 9 upward.

  Further, at the start of spraying, it is desirable that spraying is started from the spray nozzle 10 all at once after the spraying pump 12 is started and the discharge pressure reaches a predetermined value. Furthermore, when the traveling machine 3 is suddenly stopped for some reason in the field during the spraying operation, it is desirable to stop spraying from the spray nozzles 10 from the viewpoint of maintaining the uniformity of the spraying amount. .

  Therefore, only the minimum practical members necessary for performing these operations, that is, only the boom telescopic operation lever 53, the boom up / down swing operation lever 54, and the spray control switch 55 are used in the second operation. As a member, it is disposed in the hand-held controller 50. Therefore, the present embodiment is not limited to this embodiment, and an operation member having another function can also be added to the handheld controller 50 as necessary. On the other hand, when the number of the second operation members is further reduced and minimized, in order to avoid contact between the boom 9 and the crops during the spraying operation, the boom telescopic operation lever 53 is used. And at least one of the boom up / down swing operation lever 54, preferably, only the boom up / down swing operation lever 54 may be provided.

  The hand-held controller 50 includes a rod-shaped gripping portion 57 having a thickness suitable for gripping with one hand H. In the hand-held controller 50, the boom telescopic operation lever 53, the boom up / down swing operation lever 54, and the spray control switch 55 as the second operation member are held by the hand holding the grip portion 57. It is disposed at a position where it can be operated with the finger h. For this reason, the hand-held controller 50 can be easily held with one hand H, and the operation levers 53 and 54 and the spray control switch 55 can be easily operated with the one hand held.

  In addition, as shown in FIG. 3, if the hooking part 58 for suspension is provided in the hand-held controller 50, a hook or the like (not shown) provided at an appropriate position near the driver's seat 2 when not in use. Since it can be hooked on the surface, the handleability is improved and it is preferable.

  The boom sprayer 1 can be used as follows.

As shown in FIG. 1, in the case of normal (advanced piece) spreading performed by expanding the boom 9 to the right spreading position O ₁ , the driver D uses the steering handle 56 with the left hand to move the traveling machine body 3. In parallel with the driving operation in the forward direction F, the control box 18 disposed on the right side of the driver's seat 2 is visually observed from the driver's seat 2 while viewing the boom 9 diagonally right rearward RB. The boom 9 is controlled by operating the operation member, in particular, the boom telescopic operation lever 31 or the boom up / down swing operation lever 43 with a right hand. In this case, the driver D twists his / her neck and body in the direction of the hand (right hand) operating the control box 18 in order to view the boom 9. Thus, visual observation of the vicinity of the tip 9b of the boom 9 and control of the boom 9 can be performed.

Conversely, in the case of performing the reverse pieces sprayed with stretched the boom 9 to the left spraying position O ₂ is the driver D is driving the by the steering wheel 56 with the right hand to the reverse direction B of the vehicle body 3 In parallel with the operation, while observing the boom 9 on the left oblique rear side LB from the driver's seat 2, the hand-held controller 50 is grasped with one hand (for example, the left hand) that is easy to hold, The boom 9 is controlled by the boom telescopic operation lever 53 or the boom up / down swing operation lever 54 of the hand-held controller 50. In this case, in order to operate the control box 18, the driver D twists his / her neck and body in opposite directions, unlike the case of the normal spraying, but the handheld controller In the case of 50, the second operating members 53, 54, 55 can be operated by arbitrarily moving them to a position where they can be easily operated, so that it is relatively easy as in the case of the normal spraying. In the posture, the vicinity of the tip end portion 9b of the boom 9 can be visually observed and the boom 9 can be controlled.

The effect of the boom sprayer 1 is of course also exerted during forward F operation of the traveling machine body 3, but in particular during reverse B operation where the operation of the traveling machine body 3 is more difficult than during forward F operation. Become prominent. That is, the as sprayed method using a boom sprayer 1, the boom 9 and sprayed in the forward F operated with stretched to the right spraying position O _1, at the end of the ridge, the boom 9 the left spraying position O There is a method of switching to ₂ and spraying on the opposite side while returning to the same route by reverse B operation. If this spraying method is adopted, there is no need to provide a headland for changing the direction of the traveling machine body 3 at the end of the bag, so there is an advantage that an effective planting area can be increased. According to the boom sprayer 1, the boom 9 while stretched on the left side scatter position O _2, the even case where the vehicle body 3 backward B, and to accurately control the boom 9 in a comfortable position Therefore, sufficient attention can be paid to the reverse B driving of the traveling machine body 3, which is particularly suitable.

  The driver D performs control related to the boom 9 according to his / her preference by using the hand-held controller 50 which is easy to hold in both the left side spraying and the right side spraying. Of course you can.

  As a modified example, the first operation members 31, 43, 46 having a function overlapping with the second operation members 53, 54, 55 of the handheld controller 50 are omitted from the control box 18, The control related to the boom 9 can be always performed by the second operation members 53, 54, and 55 of the hand-held controller 50. In this case, the hand-held controller 50 is provided with only an operation member to be operated while visually observing the boom 9 at the driver's seat 2 from the viewpoint of compactness or improved handling, and the control box 18. In this case, among all the operation members related to the boom 9 or spraying, only an operation member having a function different from that of the operation member provided in the hand-held controller 50 is provided.

  It is more preferable that the wiring 51 is of an automatic winding type in the control box 18 and the hand-held controller 50 is fitted in the control box 18 and can be held freely.

It is a top view of a boom sprayer as a boom type work vehicle concerning one preferred embodiment of the present invention. It is a rear view of the boom sprayer of FIG. It is a perspective view of the control box as a 1st operation part, and the hand-held controller as a 2nd operation part.

Explanation of symbols

1 Boom-type work vehicle (one-boom sprayer)
2 Driver's seat 3 Traveling machine body 9 Boom 9b Boom tip 18 Fixed position type operation unit (control box)
23 Operation member (boom opening / closing operation lever)
27 Operation member (boom turning operation lever)
31 First operation member (boom telescopic operation lever)
40 Operation member (Boom turning lever)
43 First operation member (boom up / down swing operation lever)
46 First operation member (spray control switch)
50 Position changeable operation unit (hand-held controller)
51 Wiring 53 Second operation member (boom telescopic operation lever)
54 Second operation member (boom up / down swing operation lever)
55 Second operation member (spray control switch)
57 Grasping part D Driver L Left outward R Right outward F Forward position (forward direction)
B Rear position (backward direction)
H One hand (driver's hand)
h Hand fingers

Claims (10)

  At the rear of the traveling machine body (3) is provided with a boom (9) that can switch the extending direction toward the left outer side (L) and right outer side (R), and the boom (9) of the traveling machine body (3). ) A boom-type work vehicle (1) having a driver's seat (2) at a front position (F) from the driver's seat (2) to the rear position (B) in the extended state (9). A boom type work vehicle comprising a position changeable operation section (50) having an operation member (53, 54, 55) controlled and operated by a driver (D) who visually observes the vehicle.   A position fixing type operation unit (18) having a first operation member (31, 43, 46) is provided, and the position fixing type operation unit (18) is either left or right (LR). The boom (9) being extended is fixedly arranged at a position where the driver (D) can easily operate the first operating member (31, 43, 46) while viewing from the driver seat (2). The operation member (50) provided in the position changeable position is a second operation member (53, 54, provided with the same control function as the first operation member (31, 43, 46)). 55) The boom type work vehicle according to claim 1, wherein   All the operation members (23, 27, 31, 40, 43) necessary for controlling the boom (9) are arranged in the fixed position operation section (18), and the position can be changed. The operation unit (50) includes an operation member (53, 54) having the same control function as the specific operation member (31, 43) among all the operation members (23, 27, 31, 40, 43). The boom type work vehicle according to claim 2, wherein only the   The boom type work vehicle according to claim 2 or 3, wherein the second operation member is an operation member (54) for swinging the tip end (9b) side of the boom (9) up and down.   The position change is performed so that a control command from the position changeable operation unit (50) is transmitted through a wired control command transmission system extending from the position fixed type operation unit (18). The boom type work vehicle according to claim 2, 3 or 4, wherein a possible operation part (50) and the position fixing type operation part (18) are connected by a wire (51).   The position-changeable operation part (50) includes a rod-shaped grip part (57) having a thickness suitable for the driver (D) to hold with one hand (H). 50) The operating member (53, 54, 55) is disposed at a position where it can be operated by a finger (h) of the hand holding the grip portion (57). The boom type work vehicle according to one item.   At the rear of the traveling machine body (3) is provided with a boom (9) that can switch the extending direction toward the left outer side (L) and right outer side (R), and the boom (9) of the traveling machine body (3). ) Is a hand-held controller (50) of a boom type work vehicle (1) having a driver seat (2) in a forward position (F), the boom (9) being extended from the driver seat (2). The hand-held controller provided with the operation member (53, 54, 55) controlled by the driver | operator (D) who visually observes.   The operation member has a control function identical to that of the first operation member (31, 43, 46) disposed in the position-fixed operation unit (18) in the vicinity of the driver seat (2). The hand-held controller according to claim 7, wherein the controller is an operating member (53, 54, 55).   The position is controlled so that the control command from the second operation member (53, 54) is transmitted via a wired control command transmission system extending from the position-fixed operation section (18). The hand-held controller according to claim 8, wherein the controller can be connected to the fixed operation unit (18) by a wiring (51).   A finger (h) having a rod-shaped gripping part (57) having a thickness suitable for gripping with one hand (H), wherein the operating member (53, 54, 55) grips the gripping part (57). The handheld controller according to claim 7, 8 or 9, wherein the handheld controller is disposed at a position operable by the controller.

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