JP2008029305A - Spray apparatus of agricultural working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To equalize an application amount from a central duct between right and left wheels and an application amount from both right and left sides in a spray apparatus of granular fertilizer. <P>SOLUTION: A hopper 2 is equipped with right and left feed valves 26 to feed and stop feeding, a granular fertilizer fed from the right and left feed valves 26 is sprayed from a central first duct 28, a central second duct 29 and right and left booms 3R and 3L to between right and left wheels and to both right and left sides of an agricultural working vehicle 1 by the air of an air blasting fan 4. The central first duct 28 and the central second duct 29 are equipped with a plurality of application ports 28a, 28b, 29a and 29b from a starting end part to an end part and the application ratios of the first central duct 28 and the central second duct 29 and the right and left booms 3R and 3L are equalized. The application ports 28a, 28b, 29a and 29b are opened and closed by opening and closing means 32R and 32L, the application ratio of the central first duct 28 is equalized with each of the application ratios of the right and left booms 3R and 3L or the total application ratio of the central first duct 28 and the central second duct 29 is equalized with each of the application ratios of the right and left booms 3R and 3L. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a spraying device for agricultural vehicles that sprays chemicals such as powder or granules, fertilizer, and the like to crops and fields.

As shown in FIG. 8, in the sprayer for agricultural vehicles, the hopper a, the left and right feeding valves b and b for feeding the granular fertilizer and the like in the hopper a, and the granular fertilizer and the like fed from the left and right feeding valves b and b are conveyed. Fan fan c, flexible left and right central ducts d and d, and left and right booms e and e, and fertilizer is sprayed by the blower fan c through the left and right central ducts d and d and the left and right booms e and e. Is known.
Japanese Patent No. 3140826

  In the agricultural vehicle spraying device, there is a spraying work projecting the left and right booms to the left and right sides, and a spraying work projecting either one of the left and right booms to the left and right sides, either one of the spraying work, There was a problem that the amount of spray from the left and right central ducts between the left and right wheels of the farm work vehicle and the amount of spray from the left and right booms on the left and right sides of the farm work vehicle were not equal, resulting in uneven crop growth. Therefore, the present invention is intended to solve such a problem.

  According to the first aspect of the present invention, the left and right feed valves (26, 26) that can be fed or stopped are provided in the hopper (2) of the agricultural work vehicle (1), and the fertilizer and the like fed from the left and right feed valves (26, 26). Are provided with a bendable central first duct (28) and a central second duct (29) that are conveyed by the wind of the blower fan (4), with the conveying direction of the central first duct (28) being from the right side of the machine body to the left side. The left boom (3L) is connected to the end side, the transport direction of the central second duct (29) is set from the left side to the right side of the machine body, the right boom (3R) is connected to the end side, and the central first duct (28) The central second duct (29) is provided with a plurality of spray holes (28a, 28b, 29a, 29b) from the start end to the end, and the central first duct (28), the central second duct (29) and the left and right Boom (3L, 3 ) And the central first duct (28), the central second duct (29) through the spray holes (28a, 28b, 29a, 29b), the central first duct (28), Each spraying rate of the central second duct (29) is made equal to each spraying rate of the left and right booms (3L, 3R), or the total spraying of the central first duct (28) and the central second duct (29) Open / close adjusting means (32L, 32R) for the spray holes (28a, 28b, 29a, 29b) to equalize the rate and the spray rate of the left and right booms (3L, 3R). The agricultural vehicle scatterer is provided with actuators (30L, 30R) that move the vehicle to the storage posture along the left and right sides of the farm vehicle 1 and the scatter posture protruding in the left-right direction.

  According to the above configuration, the fertilizer and the like fed from the hopper (2) of the farm vehicle 1 by the left and right feed valves (26, 26) can be bent by the wind generated by the blower fan (4), the central first duct (28), It is sprayed while being transported by the left boom (3L), and is sprayed while being transported by the central second duct (29) and the right boom (3R). Further, as shown in FIG. 1, for example, the left boom (3L) is stored along the side of the fuselage to stop spraying, the right boom (3R) protrudes to the right of the fuselage, and the central second duct (29 When the spray holes (29a, 29b) are opened, and fertilizer and the like are conveyed to the central second duct (29) and the right boom (3R), from the central second duct (29) to the lower side of the farm vehicle 1 Then, fertilizer and the like can be evenly sprayed from the right boom (3R) to the right side of the machine body. Moreover, as shown in FIG. 3, the left and right booms (3L, 3R) protrude left and right, and the spray hole (28a) of the central first duct (28) and the spray hole (29a) of the central second duct (29). Are closed, the spray hole (28b) of the central first duct (28) and the spray hole (29b) of the central second duct (29) are opened, and the central first duct (28) and the central second duct ( 29) When fertilizer is transported to the left and right booms (3L, 3R), the total spreading rate of the central first duct (28) and the central second duct (29) and the spreading rate of each of the left and right booms (3L, 3R) Fertilizer etc. can be sprayed evenly.

  The invention of claim 1 can be applied to a wide spraying operation in which the left and right booms (3L, 3R) protrude to the left and right sides and a narrow spraying operation in which either one of the left and right booms (3L, 3R) protrudes to the left and right sides. Equalizing the spreading rate between the left and right wheels of the farm vehicle 1 from the first duct (28) and the central second duct (29) and the spreading rate from the left and right booms (3L, 3R) on the left and right sides of the farm vehicle 1; Unevenness in crop growth can be suppressed.

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an overall plan view of a farm vehicle 1 having the present invention, and FIG. 2 is a rear view of the farm vehicle 1.
The farm vehicle 1 includes a hopper 2 for storing granular fertilizer, left and right booms 3L, 3R having spray holes, and a blower fan 4 for sending the granular fertilizer in the hopper 2 to the left and right booms 3L, 3R. 6 is installed.

  The farm vehicle 1 is configured as follows. The farm vehicle 1 is provided with left and right main frames 8 and 8 in parallel in the front-rear direction, left and right front wheels 9 and 9 on the left and right sides of the front side of the main frames 8 and 8, and left and right rear wheels 11 on the left and right sides of the rear side. 11 are provided. On the left and right main frames 8 and 8, a floor 12 on which an operator puts his / her foot is provided. On the floor 12, left and right brake pedals 13 and 13 and a clutch pedal 14 are provided.

  An engine (not shown) is mounted in the hood 16 on the front side of the vehicle body, and the power of the engine (not shown) is transmitted to the transmission case 18 via a main clutch (not shown). It is transmitted to the front wheels 9 and 9 and the rear wheels 11 and 11 via a hydraulic continuously variable transmission (not shown) and an auxiliary transmission (not shown). Although not shown in the drawings, overheating of the engine can be prevented if exhaust from the exhaust port of the engine is guided to the dust-proof mesh portion of the radiator by a pipe to remove dust adhering to the dust-proof mesh portion.

  A handle 21 is provided on the rear side of the bonnet 16, and a driver's seat 19 is provided behind the handle 21. A display panel 23 is provided on the rear side of the hood 16, a continuously variable transmission lever (not shown) is provided on the left side of the driver seat 19, a spraying operation panel 24 is provided on the right side of the driver seat 19, and the main frame 8 Steps 25 and 25 for getting on and off are provided on the left and right sides of the driver's seat 19.

  The hopper 2 constituting the spraying device 6 is disposed behind the driver's seat 19, an inlet for supplying granular fertilizer is provided at the upper part of the hopper 2, and left and right feeding valves 26, 26 are provided on the left and right sides of the lower part of the hopper 2. The PTO power is transmitted to the left and right feeding valves 26, 26 via the PTO shaft (not shown), the feeding transmission device 26a, and the feeding clutches 26b, 26b. A blower fan 4 is disposed behind the hopper 2, and power is transmitted from a PTO shaft (not shown) via a fan belt transmission device 4 a to drive the blower fan 4. The wind generated by the blower fan 4 is sent to the blower passage 27, and receives the granular fertilizer fed from the left and right feed valves 26, 26 in the middle of the blower passage 27 and conveys it to the terminal side.

  The left air outlet 27a on the right end side of the air passage 27 is connected to the start end side of the bendable central first duct 28, and the end side of the central first duct 28 is rearward of the hopper 3 and the blower fan 4 in plan view. It extends to the left side of the fuselage through the side and is connected to the start end side of the left boom 3L at its end. Further, a plurality of spray holes 28a, 28b are provided at the start and end portions of the central first duct 28, and the spray holes are disposed above the middle portion of the flanges 31,. The spreading rate from 28b and the spreading rates of the left and right booms 3L, 3R are configured to be equal.

  The right air outlet 27b at the left end of the air passage 27 is connected to the start end side of the bendable central second duct 29, and the end side passes through the rear side of the hopper 3 and the blower fan 4 in plan view. Extending to the right side of the machine, the center first duct 28 and the center second duct 29 are shifted in the vertical direction and extended to the left and right so as to cross over in plan view. Connected side. And the spreading | diffusion hole 29a, 29b is provided in the start end part and the terminal part of the center 2nd duct 29, and this spreading | diffusion hole 29a, 29b is above the intermediate part of ridges 31, ..., and the spreading | diffusion hole 28a of the center 1st duct 28. 28b along the front-rear direction so that the spreading rate from the spreading holes 29a, 29b of the central second duct 29 and the spreading rate of the left and right booms 3L, 3R are equal.

  Further, by expanding and contracting the left and right boom cylinders 30L and 30R, the left and right booms 3L and 3R can be moved and adjusted between a storage posture along the front-rear direction approaching the left and right sides of the farm vehicle 1 and a spraying posture protruding in the left-right direction. It is composed.

  According to the above configuration, as shown in FIG. 1, for example, the left boom 3L is housed in the vicinity of the fuselage side, only the right boom 3R is in a spraying posture protruding rightward, and the granular fertilizer is fed only from the right feeding valve 26. Scatter. Then, the granular fertilizer is sprayed from the spray hole 29a at the start end of the central second duct 29 and the spray hole 29b at the end of the central second duct 29 to the machine part of the farm work vehicle 1 (between the left and right wheels). The granular fertilizer is sprayed from the spray hole of the right boom 3R, and the granular fertilizer is evenly sprayed on the traveling portion and the right side portion of the farm vehicle 1 so that the uneven growth of the crop can be suppressed.

  Further, as shown in FIG. 4, the spraying operation panel 24 is provided with left and right feeding clutch levers 36L and 36R, and interlocked via left and right feeding clutch levers 36L and 36R, left and right feeding clutches 26b and 26b, and left and right operation wires 38L and 38R. It is connected. Further, left and right shutters 32L and 32R are provided in the spray hole 28a at the start end of the central first duct 28 and the spray hole 29a at the start end side of the central second duct 29 so as to be freely opened and closed. The left and right spray hole opening / closing levers 33L and 33R are provided on the left and right sides of the driver's seat 19 so as to open and close the left and right shutters 32L and 32R, respectively.

  Further, the open / close configuration of the left and right shutters 32L and 32R may be configured as shown in FIG. The spray operation panel 24 is provided with a single spray hole opening / closing lever 33. Between the spray hole opening / closing lever 33 and the left and right shutters 32L, 32R, a first rod 34a, an arm 34b, a shaft 34c, left and right arms 34d, 34d, The left and right shutters 32L and 32R are opened and closed at the same time by being interlocked and connected via the left and right rods 34e and 34e.

  According to the above configuration, as shown in FIG. 3, the left and right booms 3L and 3R are set in a wide left and right spreading state protruding left and right, and the left and right shutters 32L and 32R are closed and adjusted by a single spreading hole opening / closing lever 33. The spray hole 28a at the start end of one duct 28 and the spray hole 29a at the start end side of the center second duct 29 are closed, and the spray hole 28b at the end of the center first duct 28 and the center second duct 29 are closed. The granular fertilizer is sprayed only from the end side spray holes 29b, and the granular fertilizer is sprayed from the left and right ducts 3L, 3R. Then, wide uniform spraying can be performed, and uneven growth of crops can be suppressed.

  Also, load cells (not shown) are provided at the base ends of the left and right booms 3L, 3R, and the load cells are connected to the controller 41 of the spraying operation panel 24. When the load cell detects a strain greater than a predetermined value, the display on the display panel 23 is displayed. It may be configured to display that effect on the part, or to output a deceleration command to HST (not shown) to decelerate the traveling speed. By configuring in this way, it is possible to prevent the left and right booms 3L, 3R from being cut and to enhance the durability.

  Next, another embodiment of step 25 will be described with reference to FIG. Steps 25 for getting on and off are detachably provided on the left and right sides of the driver's seat 19 in the main frame 8. This step 25 includes left and right step frames 25a and 25a, a plurality of upper and lower step plates 25b attached to the left and right step frames 25a and 25a, and left and right attachments that refract the upper ends of the left and right step frames 25a and 25a. It is comprised by the parts 25c and 25c. Further, front and rear support cylinders 51 and 51 are provided on the main frame 8 side, and left and right mounting portions 25 c and 25 c of step 25 are inserted into the front and rear support cylinders 51 and 51 and are prevented from being detached by pins 52 and 52.

  Thus, during normal operation of the agricultural vehicle 1, the step 25 is supported in a suspended manner as shown by the solid line in FIG. 6, and when the agricultural vehicle 1 is maintained, the step 25 protrudes upward as indicated by the dotted line. When supported in such a manner, step 25 does not get in the way, and the maintenance work below the farm vehicle 1 can be performed smoothly.

Next, another embodiment of the clutch pedal 14 will be described with reference to FIG.
The main frame 8 pivotally supports the clutch pedal 14, and a clutch arm 56, between a clutch operating piece 14a of the clutch pedal 14 and a clutch yoke 54 for operating a main clutch (not shown) in the clutch housing 53, The clutch rod 57 interlocks the connection. Further, the front end portion of the clutch actuating piece 14a and one end portion of the clutch rod 57 are interlocked and connected by a pin 58 and a long hole 59 so that the main clutch (not shown) is initially depressed when the clutch pedal 14 is depressed. ) Is not activated, but is configured to be activated by the subsequent second stepping operation.

  Further, a trunnion arm 62 and a trunnion wire 63 are provided between the HST operating piece 14b of the clutch pedal 14 and the gear trunnion shaft 61 of the HST (hydrostatic continuously variable transmission, not shown) in the transmission case 18. Are linked to each other. The trunnion arm 62 is configured to be operated by a shift lever (not shown) provided in the vicinity of the driver's seat 19.

  According to the above configuration, when the clutch pedal 14 is in the illustrated state, the main clutch (not shown) is in the connected state, and the HST (not shown) is in the predetermined forward shift state. In this state, when the clutch pedal 14 is stepped in the first step in the counterclockwise direction, the HST operating piece 14b of the clutch pedal 14 rotates counterclockwise, and the trunnion shaft is connected via the trunnion wire 63 and the trunnion arm 62. 61 rotates to the deceleration side, and HST (not shown) is decelerated and shifted. At this time, the pin 58 of the clutch operating piece 14 a is in contact with the front end of the elongated hole 59 of the clutch rod 57.

  Next, when the second step of the clutch pedal 14 is stepped on, the trunnion shaft 61 is decelerated and shifted to the neutral position through the trunnion wire 63 and the trunnion arm 62, and the HST (not shown) is stopped. The clutch yoke 54 rotates via the clutch arm 56 and the clutch rod 57, and the main clutch (not shown) is disengaged.

  Therefore, the single clutch pedal 14 can perform HST (not shown) deceleration, stop, and disengagement operation of the main clutch (not shown), thereby simplifying the operation.

Top view of agricultural vehicle Rear view of farm vehicle Top view of spraying device Top view of spraying device Top view of spraying device Front view and side view of step Side view of clutch pedal Plan view showing the conventional configuration of a sprayer for agricultural vehicles

Explanation of symbols

1 Agricultural work vehicle 2 Hopper 2
3L, 3R Left and right boom 4 Blower fan 26 Left and right delivery valve 28 Central first ducts 28a, 28b, 29a, 29b Spray hole 29 Central second ducts 30L, 30R Actuator (left and right boom cylinder)
32L, 32R Left / right opening / closing adjustment means (left / right shutter)

Claims (1)

The hopper (2) of the agricultural vehicle (1) is provided with left and right feeding valves (26, 26) that can be fed or stopped, and fertilizers fed from the left and right feeding valves (26, 26) are supplied to the blower fan (4). A bendable central first duct (28) and a central second duct (29) that are transported by wind are provided, and the transport direction of the central first duct (28) is set to the left side from the right side of the machine body to the left side (3L) ), And the right boom (3R) is connected to the terminal end side with the transport direction of the central second duct (29) from the left side of the machine body to the right side, and the central first duct (28) and the central second duct (29) ) Is provided with a plurality of spray holes (28a, 28b, 29a, 29b) from the start end to the end, and the center first duct (28), the center second duct (29) and the left and right booms (3L, 3R) Even spread rate The distribution rate from the distribution holes (28a, 28b, 29a, 29b) of the central first duct (28) and the central second duct (29) is determined as the central first duct (28) and the central second duct (29). ) Of the left and right booms (3L, 3R) or the total spreading rate of the central first duct (28) and the central second duct (29) and the left and right booms (3L). , 3R) is provided with opening / closing adjusting means (32L, 32R) for the spray holes (28a, 28b, 29a, 29b) to equalize the respective spray rates, and the left and right booms (3L, 3R) are mounted on the farm vehicle 1 body. A sprayer for agricultural vehicles, provided with actuators (30L, 30R) that move between a storage posture along the vicinity of both left and right sides and a spraying posture protruding in the left-right direction.

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