JP2006136327A - Scatter work vehicle - Google Patents

Abstract

An object of the present invention is to prevent accidental disconnection due to vibration during traveling when a side spray boom is folded.
A center spray pipe 35 having a center spray pipe 35 at the front of the vehicle body and having a side spray pipe 48 in a center spray machine frame 27 equivalent to the left and right width of the vehicle body is provided at both left and right ends of the center spray pipe 35. There is provided a side sprayer frame 39 that is rotatable around the tilt axis 41 so as to be switchable between a wide spray work state extending in a straight line and a narrow storage state approaching the rear side of the vehicle body. There is provided a locking device 50 comprising a clamping metal fitting 51 for receiving the sprayer frame 39 and a locking metal fitting 52 for closing the entrance.
[Selection] Figure 4

Description

  The present invention relates to a riding self-propelled spray work vehicle that performs irrigation or disinfection for agriculture in which a spraying device is mounted on a riding self-propelled traveling vehicle.

Conventionally, a center sprayer frame that is equipped with a chemical tank that stores chemicals at the rear of the vehicle body and that has a plurality of nozzles at the front of the vehicle body is equal to or slightly wider than the left and right width of the vehicle body, and both left and right sides of the center sprayer frame In a self-propelled spray vehicle that supports a side sprayer frame that rotates toward a storage position that intersects in an X-shape so as to be movable up and down via a vertical movement mechanism, the side sprayer frame in a folded position is a center sprayer frame. There is a configuration in which it is supported by a boom receiver provided in the above.
Japanese Utility Model Publication No. 02-70757

  However, since the conventional one is simply supported by the boom receiver, there is a risk that the side sprayer frame may rotate downward due to accidental disengagement due to the vibration of the airframe when operating on the road.

  The present invention aims to solve the above-mentioned problems and has taken the following technical means. That is, a tank (22) for storing irrigation or disinfecting liquid is mounted at the rear of the vehicle body, and a center spray pipe (35) having a plurality of spray nozzles (34, 34. A center sprayer frame (27) that is equal to or slightly wider than the center sprayer, and a side spray tube (48, 48) having a plurality of spray nozzles (34, 34...). Side spray that can be rotated around the tilt axis (41) so as to be switchable between a wide spray work state extending substantially linearly at both left and right ends of the spray pipe (35) and a narrow storage state approaching the rear side of the vehicle body. Locking device comprising a clamp fitting (51) and a lock fitting (52) for closing an entrance in a spraying work vehicle in which a spraying device (26) having a machine frame (39, 39) is supported through a link mechanism so as to be movable up and down. ( 0) and spraying work vehicle configuration formed by providing a.

  In the above configuration, when the end of the field is reached, the irrigation work and the disinfection work are continued or interrupted to turn the vehicle and move the vehicle to the heel side of the unworked part. The required side of the sprayer frame (39, 39) is swung up rearward and upward to narrow the left and right width of the spray device (26) so that it can be turned easily. Similarly, when operating on the road, the side sprayer frame (39, 39) is swung up rearward and upward to prevent the side sprayer frame (39, 39) from rotating downward inadvertently. Work (50).

  While the side sprayer frame (39, 39) is pivoted around the tilt axis and swung up rearward and upward, the clamping device (51) of the locking device (50) is in the middle of the side sprayer frame (39, 39). By receiving the portion and operating the lock fitting (52), it is possible to move without accidental disconnection due to vibration during traveling.

  An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a traveling vehicle, which is a four-wheel drive tractor that is an example of a riding type vehicle. As is clear from FIG. 1 and FIG. 2, an engine covered with a bonnet 5 is mounted on the upper front side of a vehicle body 4 having front wheels 2, 2 and rear wheels 3, 3, and a control seat 6 is provided at the rear thereof. A steering post is provided at the center of the left and right of the rear end of the bonnet to provide a handle 7. Although not shown, the front wheels 2 and 2 and the rear wheels 3 and 3 of the tractor 1 can be switched to front wheel steering, rear wheel steering and front and rear wheel steering by push buttons 8a, 8b and 8c which can be selectively switched from the control seat side. I'm making things. 9 is a main transmission lever, 10 is a sub transmission lever, and 11 is a throttle lever. Reference numeral 12 denotes a cockpit floor, which is stretched on the upper surface side of the vehicle body.

  A front hitch 13 is provided on the front side of the vehicle body 4. Reference numeral 14 denotes an elevating mechanism, which pivotally attaches the base side of the upper link 16 and the lower link 17 to a fixed base frame 15 that can be appropriately attached to and detached from the front hitch 13 so as to be rotatable around a horizontal axis. , 17 are pivotally connected by a connecting hitch frame 18 so that the connecting hitch frame 18 can be linked up and down. The link structure of the elevating mechanism 14 is such that the connecting hitch frame 18 is inclined more forward than the link fulcrum interval M on the base side so that the inclination of the connecting hitch frame 18 is directed to the rear or the front at the middle of the upper and lower parts. The link fulcrum interval L is increased. An electric cylinder 19 pivots the base side to the connecting hitch frame 18 and pivots the piston side to the lower link 17 so that the connecting hitch frame 18 moves up and down by the movement of the piston 19a. .

  A tank 20 is a resinous tank for storing water for irrigation and a disinfectant, and is formed in a U-shape in plan view so as to surround the left and right sides and the rear side of the control seat 6. It can be easily detached while sliding. A spray adjustment operation unit 21 such as a switching valve of a spraying device, a pressure adjusting valve, or a spraying position switching valve is provided integrally with the tank 20 at an upper portion of the right side portion of the tank 20. Reference numeral 22 denotes a liquid supply lid, and 23 denotes a set screw of the tank 20. Reference numeral 24 denotes a moving jet pump, which is detachably attached to a rear hitch 25 of a tractor, which is the vehicle 1 below the tank 22, and is driven from a rear output shaft (not shown).

  26 is a spraying device, which can be divided into 27 parts of the center sprayer frame and 39 parts of the side sprayer frame, and is configured as follows. The center sprayer frame 27 has a hook-like notch locking portion 30 that can be selectively scratched on either side of the engagement shafts 28 and 29 fixed to the front end portion of the connecting hitch frame 18 in two upper and lower stages, A detachable metal fitting 33 having a fixing hole 32 through which the pin 31 can be inserted and removed together when the connecting hitch frame 18 is rotated at a predetermined angle in the locked state is integrally provided. 34, 34,. . . Are attached so that the nozzle 34 faces downward. Reference numeral 36 denotes a handle for rotating the center sprayer frame 27 during attachment / detachment. Reference numeral 37 denotes a support for supporting a side sprayer frame, which will be described later, at the time of folding. The base is fixed to the left and right ends of the center sprayer frame 27 and is provided so as to face rearward and upward when set. A transport handle 38 for lifting and transporting the entire sprayer frame is provided at the upper end of the column 37. The direction of the grip portion of the transport handle 38 is configured in the direction of gravity when the entire sprayer frame (including all center and side spray frame parts) is suspended on the left and right support columns 37, maintaining balance. You can lean and carry.

  The side sprayer frame 39 includes a movable member 42 that can be pivoted rearward and upward with a pin 41 to a bracket 40 fixed to the left and right tip sides of the center sprayer frame 27, and a pin 43 on the movable member 42. It is fixed to a metal fitting 44 that can be turned only rearward around the horizontal direction.

  45 is an electric cylinder for rotating the side sprayer frame 39 around the pin 41. The cylinder body is pivoted to the center sprayer frame 27 and its piston 45a is pivoted to the movable member 42. The side sprayer frame 39 is developed on the extended line in the same direction as the side sprayer frame 39 extends by the protrusion of the piston 45a, and is configured to bend and operate rearward and upward by the retraction of the piston 45a. Yes. 46 is a spring that holds the side sprayer frame 39 in the pulling direction, and is interposed between the support column 37 and the movable member 42, and maintains the side sprayer frame 39 by the electric cylinder 45 and the swinging force. Helps to help.

  Further, the spring 47 is interposed between the side sprayer frame 39 and the metal fitting 44, and when a foreign object comes into contact with the machine frame 39 from the front side in a state where the side sprayer frame 39 extends in the horizontal direction. The machine casing 39 is rotated around the pin 43 to prevent the machine casing 39 from being damaged, and when the contact of foreign matter is removed, the machine casing 39 returns to the original state in which it is aligned with the center sprayer machine frame 27. Is.

  Reference numeral 48 denotes a side spray pipe which is attached along the lower portion of the side spray machine frame 39 and extends outward from the machine frame 39. The spray nozzles 34, 34,. . . Are attached at predetermined left and right intervals. 49 is a flexible connecting hose made of rubber, and is connected so that pressurized liquid is sent from the moving jet pump 24 to the center spray pipe 35 and the side spray pipe 48 through each valve of the spray adjusting operation section 21. Hose to do.

  Reference numeral 50 denotes a lock device that maintains the swing-up state of the side sprayer frame 39, and holds the side sprayer frame 39 that is attached to the column 37 that is integral with the center sprayer frame 27 and that stands perpendicularly at both ends and stands upward. A holding metal fitting 51 and a lock metal fitting 52 that closes the entrance so that the side sprayer frame 39 is not accidentally dropped when the side sprayer frame 39 is fitted inside the holding metal fitting 51. The spray tube 48 is provided so as to be operable by a rod 54 movably provided by a lever 53 in the direction of the tube 48. The lever 53 is naturally provided integrally with the side sprayer frame 39 and the side spray tube 48. In the state where the side sprayer frame 39 and the side spray tube 48 are swung upward and rearward, the lever 53 is operated. The position is such that it can be easily operated from the seat 6 side. Reference numeral 55 denotes a spring that holds the locked state, and 56 denotes a lever guide that passes through the rod 54 and that locks the lever 53 so that the lock fitting 52 holds the unlocked state. In the figure, reference numeral 57 denotes a rolling wheel for movement fixed to the center sprayer frame 27 via a bracket 58.

  Next, the operation of the above example will be described in detail. The traveling vehicle 1 becomes a mere vehicle by removing the rear tank 20, the moving pump 24, the spray device 26, and the lifting mechanism 14, and becomes a vehicle for other work. obtain. Moreover, in the irrigation work or the disinfection work, these work can be performed in the state illustrated.

  That is, while operating this vehicle in a state where the vehicle is straddling the fence on which the crops in the field are vegetated, the operator performs an appropriate operation of the spray adjusting operation unit, thereby feeding the liquid to the spraying device 26 side. Irrigation or disinfection of plants (vegetables and flowers) growing on the vines that the vehicle straddles in the sprayed state and the heels on the left and right sides of the spray pipe 35 and the spray nozzle 34 of the side spray pipe 48 Do.

  Then, when reaching the end of the field, the irrigation work or disinfection work is continued or interrupted to turn the vehicle and move the vehicle to the heel side of the unworked part. The necessary side of 39 is swung upward and rearward to narrow the left and right width of the spray device 26 so that it can be turned easily. In this operation, the left and right electric cylinders 45, 45 are individually operated by the switches (b), (c) provided in the vicinity of the control seat 9, and one or both of the pistons 45a, 45a are retracted. The side sprayer frame 39 is pivoted and swung up around the pin 41 as shown in FIGS. Although this state is the same during road operation, it is necessary to operate the lock device 50 to prevent the side sprayer frame 39 from rotating unexpectedly during road operation. Further, since the side sprayer frame 39 is always held in the pulling direction by the spring 46, the pulling force may be weak and a large electric cylinder is not necessary.

  Further, when the side spray machine frame 39 collides with a foreign object such as a shore or a pile during the operation, the machine frame 39 rotates around the pin 43 against the spring 47, and the machine frame 39 and the spray tube 48 can be held without being damaged, and it returns to its original state when a foreign object passes by. Further, in order to change the spray height depending on the difference in the ridge height or the growing state of the crop, the electric cylinder 19 of the elevating mechanism 14 is operated by the switch (A), and the elevating height may be changed and adjusted. If the adjustment range of the lifting mechanism 14 cannot be adjusted, the entire spray device 26 can be changed by moving the center sprayer frame 27 from the engagement shaft 28 to the 29 side up and down.

  When removing and transporting the spraying device 26 from the lifting mechanism 14 side and storing and storing it in an appropriate place, it is possible to work alone. That is, in a state where the left and right side sprayer frames 39 are swung up and folded and locked by the lock device 50, the handle 36 is grasped with one hand, the pin 31 is removed and the pin 31 is removed and lifted, and the attachment / detachment bracket 33 is removed. The notch locking portion 30 may be removed and lowered to the ground, and then the right and left transport handles 38 may be grasped and transported while being lifted. At this time, when the center of gravity of the spraying device 26 is suspended by the handle 38, it acts just on the vertical side of the handle 38, and the position and direction in a state where there is no rotation in the front-rear direction are selected and configured. Can be lifted and transported.

  The elevation mechanism 14 changes the angle of the spray device 26 with respect to the traveling vehicle 1 as shown in FIG. 1 by the elevation, and this change includes the side spray pipe 48 that is folded when it is raised. The angle of the side sprayer frame 39 becomes loose and when it descends, it becomes a steep angle, and when it rises, the height of the upper end of the side spray pipe 48 is lowered so as not to obstruct the road running. Yes.

  In the present invention, a center sprayer frame having a tank body 22 for storing irrigation or disinfecting liquid at the rear of the vehicle body and having a plurality of spray nozzles 34... 27, and a spraying work vehicle that supports a spray device 26 having side spray frames 39 that are pivotally housed toward the inner side of the vehicle body on both the left and right sides of the center sprayer frame 27. Both the actuator 19 for raising and lowering the actuator and the actuator 45 for rotating the side spray frame 39 are constituted by electric cylinders, and the actuators 45 and 45 for rotating the side spray frame 39 are parallel to the upper side of the center sprayer frame 27. Provided on the side of the handle 7 in front of the control seat 6 and a switch (B) (C) and a switch for rotating the side spray frame 39. Since the switch (a) for raising and lowering the mechanism is provided, the side spray frame 39 can be rotated or the entire spray device 26 can be lifted and lowered easily and operably while looking forward. is there. Further, since the actuators 45, 45 for rotating the side spray frame 39 are provided above and parallel to the center sprayer frame 27, obstacles come into contact with the electric cylinder during the spraying operation and are damaged. There is no risk of malfunction.

It is a whole side view of a spreading work vehicle. It is a whole top view of a spreading work vehicle. It is an enlarged side view of the principal part. It is an enlarged front view of the principal part. It is a perspective view of the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling vehicle 2 Front wheel 14 Lifting mechanism 18 Connecting hitch frame 22 Tank 26 Spraying device 27 Center spray machine frame 34 Spray nozzle 35 Center spray pipe 39 Side spray machine frame 41 Pin (inclination axis)
48 Side spray pipe 50 Locking device 51 Clamping bracket 52 Locking bracket

Claims (1)

Equipped with tank (22) containing a liquid for irrigation or for disinfecting the vehicle body rear portion, and Bei example vehicle lateral width center spray tube (35) having a plurality of spray nozzles (34, 34 ...) in the vehicle body front A center sprayer frame (27) that is equal to or slightly wider than the center sprayer and a side spray pipe (48, 48) having a plurality of spray nozzles (34, 34...) Are provided. tube (35) wide spraying operation state and the vehicle body width close to the rear narrow housed state and be switchable tilt axis (41) around at rotatable side sprayer extended substantially linearly to the left and right ends of the In a scattering work vehicle in which a spraying device (26) having a frame (39, 39) is supported so as to be movable up and down via a link mechanism,
Together constitute at both the electric cylinder and an actuator (45, 45) for rotating the actuator (19) and the side spraying machine frame (the 39, 39) for elevating said link mechanism, side spraying machine frame (the 39, 39) An actuator (45, 45) for rotation is provided above the center sprayer frame (27) in parallel therewith,
A is towards the side switch for lifting switch provided side by side in order to pivot the side spraying machine frame (39, 39) (ii) and (iii) a linkage control seat (6) in front of the handle (7) ( A spray work vehicle characterized in that b) is provided close to the same side in the left-right direction.

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