JP2009232774A - Chemical-spraying device in farm working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently carry out chemical spraying by a vertical boom sprayer vertically stood along a standing tree or the like. <P>SOLUTION: The chemical-spraying device in a farm working vehicle is constituted as follows. A supporting frame 51 long in the right and left direction is attached to a boom-supporting boom material 42b installed in a machine body of the farm working vehicle so as to be freely lifted and lowered. A vertical boom sprayer 52 along the vertical direction is attached to a site offset in the right or left direction from a right or left front wheel 9 or 9 and a right or left rear wheel 11 or 11 in the supporting frame 51. Many spray nozzles 3... for spraying the chemical in the right and left outside orthogonal direction from the vertical direction are installed in the vertical boom sprayer 52. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a chemical solution spraying device for agricultural work vehicles.

  In the chemical solution spraying device for agricultural work vehicles, the spray boom is provided along the vertical direction at the center in the horizontal direction of the machine body, the chemical solution supplied from the chemical solution supply device through the hose is guided to the spray boom, and a plurality of spray booms are provided. A device that travels between furrows while spraying a chemical solution on the left and right sides from the spray nozzle and sprays the chemical solution on the left and right sides of the crop is known (Patent Document 1).

Also, in the chemical spraying device, the middle part of the boom support frame body is supported by the front hitch so as to be able to roll and rotate by the rolling shaft, and the central boom is attached along the longitudinal direction of the boom support frame body. It is well known that the base ends of the left and right booms are pivotally supported in the left and right sides of the body so as to be pivotable in the vertical direction, and when the vehicle body is tilted to the left and right, the central boom is adjusted in a horizontal position based on the ground surface. (Patent Document 2).
JP-A-5-304868 JP 2001-258458 A

  The thing of the said patent document 1 is the structure which arrange | positions a spray boom along the vertical direction in the center part of the left-right direction of an airframe, and sprays a chemical | medical solution from the several spray nozzles of a spray boom to right and left both sides. In the case of spraying, there is a problem that the spray boom cannot be brought close to the object to be sprayed and the spray efficiency is lowered.

  Moreover, the thing of the said patent document 2 cannot arrange | position the left and right booms pivotally supported on the left and right side parts of the boom support frame body so as to face each other along the vertical direction. There was a problem that could not be done.

  Therefore, the present invention is intended to solve such a problem.

  According to the first aspect of the present invention, a boom support boom member (42b) provided on a machine body so as to be movable up and down is attached to a support frame (51) which is long in the left-right direction, and vertically attached to one side end of the support frame (51). A vertical boom sprayer (52) is attached, and the vertical boom sprayer (52) is provided with a large number of spray nozzles (3,. Car chemical spraying device.

  According to the above configuration, the vertical boom sprayer (52) is located on the side of the standing tree at a position close to the vertical direction along the vertical direction, and is directed from the spray nozzle (3,...) Of the vertical boom sprayer (52) to the left and right outer sides. Can be sprayed at right angles and sprayed onto the leaves of the branches of standing trees.

  According to a second aspect of the present invention, the vertical boom sprayer (52) is mounted on a portion of the support frame (51) that is offset to the left and right sides of the left and right front wheels (9, 9) and (left and right rear wheels 11, 11). The end part is attached, It is set as the chemical | medical solution spraying apparatus of the agricultural work vehicle of Claim 1 characterized by the above-mentioned.

  According to the above configuration, in addition to the above-described action of the invention of claim 1, in the portion offset to the left and right sides of the left and right front wheels (9, 9) and (left and right rear wheels 11, 11) in the support frame (51), Since the base end portion of the vertical boom sprayer (52) is attached, the operator's front view can be improved.

  The invention of claim 3 is a self-propelled type in which the agricultural work vehicle (1) is provided with left and right front wheels (9, 9) and left and right rear wheels (11, 11), and the agricultural work vehicle (1) has a chemical tank ( 2) A control pump (6) and a pressure adjusting device (31) are provided, and the chemical liquid whose spraying pressure is adjusted is sent to the vertical boom sprayer (52). It is set as the chemical | medical solution spraying apparatus of the agricultural work vehicle described in 1 ..

  According to the said structure, in addition to the said effect | action of the invention of Claim 1 or Claim 2, the chemical | medical solution of predetermined pressure is sprayed on a standing tree by one person work from the spray nozzle (3, ...) of a vertical boom sprayer (52), and efficiency is improved. Can be sprayed.

  According to the first aspect of the present invention, the chemical solution is sprayed in the left-right direction from the spray nozzle (3,...) Of the vertical boom sprayer (52) at positions close to the upper part and the lower part of the standing tree. The chemical solution with small particles can be sprayed, the control effect can be enhanced while reducing the amount of the chemical solution, and the chemical solution can be less scattered around the standing tree to reduce the adverse effects on the surrounding environment.

In addition to the effect of the invention of claim 1, the invention of claim 2 improves the operator's front field of view and allows the chemical solution spraying operation to be performed safely.
In addition to the above-described effect of the invention of claim 1 or 2, the invention of claim 3 is an efficient method for supplying a chemical solution at a predetermined pressure from a spray nozzle (3,...) Of a vertical boom sprayer (52) to a standing tree by one person. The spraying cost can be reduced.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The agricultural work vehicle 1 has a configuration in which a chemical solution spraying device 7 including a chemical solution tank 2, a boom sprayer 4 having a spray nozzle 3, a control pump 6 that sends the chemical solution in the chemical solution tank 2 to the spray nozzle 3, and the like is mounted on the vehicle body. It is.

  Agricultural work vehicle 1 is provided with main frames 8, 8 extending in the front-rear direction in parallel to the left and right, left and right front wheels 9, 9 on the left and right sides of the front side of main frame 8, 8 11 is provided. A floor 12 on which the operator puts his / her foot is provided on the left and right main frames 8, 8, and left and right brake pedals 13, 13 are provided on the floor 12.

  An engine E is mounted in the hood 16 on the front side of the vehicle body, and the power of the engine E is transmitted to the transmission case 18, and a hydrostatic continuously variable transmission (not shown) and a gear-type sub-transmission in the transmission case 18. It is transmitted to the front wheels 9 and 9 and the rear wheels 11 and 11 via a transmission (not shown).

  A handle 21 protrudes from 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 bonnet 16, a main transmission lever (not shown) for shifting the continuously variable transmission is provided on the left side of the driver's seat 19, and a spray amount and a spread width are provided on the right side of the driver's seat 19. A scatter setting device 27 for setting is provided.

  The chemical liquid tank 2 constituting the chemical liquid spraying device 7 is configured to surround both the left and right sides and the rear side portion of the driver's seat 19 in a plan view. As shown in FIG. 3, the chemical solution tank 2 communicates with the control pump 6 via the pipe 28 from the lower part, and the control pump 6 is driven by an electric motor. The chemical solution discharged from the control pump 6 is sent to the discharge hose 29, and a pressure adjusting device 31 is provided in the manifold of the discharge hose 29. The pressure adjustment device 31 includes a pressure control valve 33, an air chamber 32, a relief valve (not shown), a flow rate control valve 34, a discharge pressure sensor (not shown), and the like.

  Then, excess discharged chemical liquid is returned from the relief valve (not shown) of the pressure adjusting device 31 to return to the chemical liquid tank 2 via the hose 36, and a part of the discharged chemical liquid from the control pump 6 is added to the stirring hose 37. The chemical liquid that has been refluxed and precipitated at the bottom of the chemical liquid tank 2 is stirred.

  Further, the chemical liquid regulated by the pressure regulation control valve 33 is sent to the spray hose 38, and the flow rate is detected by the flow rate sensor SE1. The spraying pressure is detected by the spraying pressure sensor SE2 provided on the terminal side of the spraying hose 38, the chemical solution in the spraying hose 38 is branched by the spraying cocks 35, ... to the front extension hoses 39, ..., and the start ends of the front extension hoses 39, ... The spraying pressure is detected by the second spraying pressure sensor SE3 provided on the side, sent to the boom sprayer 4 and sprayed.

  Moreover, as shown in FIG.1 and FIG.2, the link support member 42a is provided in the front side part of the main frame 8 of the agricultural work vehicle 1, the upper link 41a and the lower link 41b are provided in the link support member 42a, and the upper side A boom support member 42b is provided at the front ends of the link 41a and the lower link 41b, and is supported by a hydraulic cylinder 43 so as to be movable up and down. The spray height of the boom sprayer 4 attached to the boom support member 42b can be adjusted. ing.

  The boom sprayer 4 constituting the chemical spraying device 7 is composed of a central boom sprayer 4C and left and right boom sprayers 4L and 4R, and is provided with spray nozzles 3 at predetermined intervals. The left and right boom sprayers 4L and 4R can be changed by an actuator between a spraying state projecting horizontally on the left and right sides and a storage state along the left and right sides of the agricultural work vehicle 1 as shown in FIG. .

  According to the above-described configuration, the power of the engine E during the operation passes through the hydrostatic continuously variable transmission (not shown) and the gear-type sub-transmission (not shown), and the left and right front wheels 9, 9 and the left and right rear wheels. 11 and 11 and travels at a predetermined work speed, and the discharged chemical liquid from the control pump 6 passes through the pressure control valve 33, the spray hose 38, the front extension hose 39,..., The central boom sprayer 4C, the left and right boom sprayers. It is sent to 4L and 4R, and is sprayed on the crop or the field scene from the spray nozzles 3,.

Next, the chemical solution spraying device shown in FIG. 4 will be described.
A support frame 51 that is long in the left-right direction is provided at a lower portion of a boom support boom member 42b that is provided on the front side of the machine body so as to be movable up and down. 11 and 11, the base end portion of the vertical boom sprayer 52 is pivotally supported by a shaft 52a in the front-rear direction. The vertical boom sprayer 52 includes a base boom sprayer 52b and a tip boom sprayer 52c attached to the base boom sprayer 52b so as to be adjustable. The base boom sprayer 52b is attached to the boom frame 52d, and the base end of the boom frame 52d is pivotally supported on the end of the support frame 51 by a shaft 52a in the front-rear direction. Further, the chemical solution in the spray hose 38 is branched from a spray cock (not shown) to the vertically extending hose 55 that can be extended and contracted, and the chemical solution is sent to the base boom sprayer 52b and the tip boom sprayer 52c. The base boom sprayer 52b and the tip boom sprayer 52c are provided with a number of spray nozzles 3,. It is configured.

  Further, the mast 53 extends upward from the left and right central portions of the support frame 51, and one end of the long cylinder 54 is pivotally connected to the distal end portion of the mast 53, so that the shaft 52 a of the boom frame body 52 d of the vertical boom sprayer 52 is connected. The other end of the long cylinder 54 is pivotally connected to the other end of the portion that is displaced to the front end side in the same length as the mast 53. The long cylinder 54 is constituted by, for example, a hydraulic cylinder. Further, a solenoid (not shown) for operating a control valve (not shown) is operated by an adjustment switch (not shown) provided in the spray setting device 27, and the long cylinder 54 is expanded and contracted to adjust the vertical boom in a vertical posture. The sprayer 52 is configured so that it can be adjusted in proximity to the lower and upper leaf portions of the standing tree in an inclined posture along substantially equal intervals.

  In the control and spraying operation of standing trees that are continuous at predetermined intervals in a factory or school garden, chemical spraying is mainly performed by using a gun nozzle without fog. In this spraying method, it is necessary to blow the chemical solution to the top of the standing tree at a high pressure, so there is a problem that the particle size of the chemical solution increases too much, adversely affects the surrounding environment, and the spray amount increases. It was.

  However, according to the above configuration, the vertical boom sprayer 52 is extended to the top of the standing tree, and the chemical solution is sprayed from the spray nozzles 3,. The control effect can be enhanced while reducing the amount of the chemical solution. Moreover, by spraying a small chemical solution of spray particles from the spray nozzles 3,..., Scattering to the surroundings of standing trees can be reduced, and adverse effects on the surrounding environment can be reduced.

  Further, the base end portion of the vertical boom sprayer 52 is pivotally supported by a front-rear direction shaft 52a at an offset position that protrudes to the left and right sides of the left and right front wheels 9, 9 and the left and right rear wheels 11, 11 of the support frame 51. As a result, the operator's forward visibility is improved, the chemical liquid spraying operation can be performed safely, and the chemical liquid fly to the operator can be reduced.

  In addition, since the self-propelled agricultural work vehicle 1 is equipped with the chemical tank 2, the chemical spraying device 7, and the pressure adjusting device 31, the spray setting device 27 sets the chemical spraying pressure of the pressure adjusting device 31 to a predetermined pressure. However, if the chemical liquid is sprayed at a predetermined pressure regardless of the vehicle speed, the chemical liquid spraying of standing trees can be performed efficiently. Conventionally, a power sprayer and a chemical tank are set on a light truck, and the light truck driver and the sprayer of the power sprayer perform the spraying work. According to the above configuration, the worker 1 It is possible to carry out the spraying work by a person, and the spraying cost can be reduced.

  Further, the vertical boom sprayer 52 is provided with a number of spray nozzles 3,... Spraying toward the left and right outer sides at predetermined intervals, so that the chemical solution is sprayed in a state orthogonal to the standing tree, and the chemical solution is applied to the entire leaf portion. It can be sprayed, and spraying performance can be improved while reducing scattering to the operator.

  In addition, the vertical boom sprayer 52 is configured to be freely adjustable by a base boom sprayer 52b and a tip boom sprayer 52c, and spray nozzles 3,. It is provided at predetermined intervals. Thus, by adjusting the expansion and contraction of the tip boom sprayer 52c in accordance with the height of the standing tree, it is possible to spray the chemical liquid evenly according to the height of the standing tree while reducing scattering to the operator.

  Further, as shown in FIG. 5, when the long cylinder 54 is adjusted to expand and contract so that the base boom sprayer 52b and the tip boom sprayer 52c in the vertical direction approach the left and right outer sides of the standing part at substantially equal intervals, The chemical solution can be sprayed uniformly on the leaf part of the low branch and the leaf part of the high branch to enhance the spraying effect of the chemical solution.

  Further, the operator adjusts the long cylinder 54 with an adjustment switch (not shown) of the spray setting device 27 so that the base boom sprayer 52b and the tip boom sprayer 52c in the vertical posture are substantially equal to the left and right outer portions of the standing leaves. Can be adjusted to approach at intervals.

  Further, by changing the extension of the long cylinder 54 from the base boom sprayer 52b and the tip boom sprayer 52c in the vertical posture shown in FIG. 4, the posture can be changed to the posture parallel to the support frame 51 in a short time as shown in FIG. can do. Therefore, the chemical liquid can be sprayed downward from the spray nozzles 3,... Of the base boom sprayer 52b and the tip boom sprayer 52c, and various chemical liquid spraying operations can be performed.

Next, another embodiment of the vertical boom sprayer 52 will be described with reference to FIG.
A support frame 51 that is long in the left and right lateral directions is attached to the lower part of the boom support boom member 42b, and the side mast is protruded from the left and right front wheels 9 and 9 and the left and right rear wheels 11 and 11 in the support frame 51. 56 is pivotally supported on a longitudinal axis 56a so as to be rotatable up and down.

  The base end portion of the boom frame body 52d of the vertical boom sprayer 52 is pivotally supported by the shaft 52a in the front-rear direction on the left and right outer side portions of the base mast 56. Further, the left and right center portions of the support frame 51 and the tip portions of the side mast 56 are connected so as to be adjustable by, for example, a hydraulic first cylinder 57, and the tip portions of the side mast 56 and the vertical boom sprayer 52 are connected. For example, a hydraulic second cylinder 58 is connected to the right and left inner portions on the base side so as to be adjustable.

  According to the above configuration, the vertical boom sprayer 52 can be set to a vertical posture or can be changed to a left and right projecting posture along the left and right sides of the support frame 51 by adjusting the first cylinder 57 to extend and contract. Further, the vertical boom sprayer 52 can be adjusted close to the standing tree branch by adjusting the second cylinder 58 to expand and contract. According to the above configuration, the operator can easily see the driver's seat 19 and is compact. It can be configured.

  In order to connect the tip of the side mast 56 and the base side of the vertical boom sprayer 52 in a telescopic manner by the second cylinder 58, the second cylinder 58 is disposed at the left and right inner portions of the vertical boom sprayer 52. Therefore, the second cylinder 58 does not hinder chemical spraying, and adverse effects on the balance of the machine can be avoided.

Agricultural work vehicle side view Top view of agricultural work vehicle Block diagram of chemical spraying device Front view of agricultural work vehicle doing chemical spraying work Front view of agricultural work vehicle doing chemical spraying work Front view of agricultural work vehicle doing chemical spraying work Front view of agricultural work vehicle doing chemical spraying work

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Agricultural work vehicle 2 Chemical solution tank 3 Spray nozzle 6 Control pump 9 Front wheel 11 Rear wheel 31 Pressure adjusting device 42b Boom support boom material 51 Support frame 52 Vertical boom sprayer

Claims (3)

  A support frame (51) that is long in the left-right direction is attached to a boom support boom member (42b) that is provided so as to be able to move up and down on the machine body, and a vertical boom sprayer (52) along the vertical direction is attached to the left and right side ends of the support frame (51). ), And the vertical boom sprayer (52) is provided with a large number of spray nozzles (3,...) For spraying the chemical solution from the vertical direction to the right and left outer right direction.   The base end portion of the vertical boom sprayer (52) is attached to a portion of the support frame (51) that is offset to the left and right sides of the left and right front wheels (9, 9) and (left and right rear wheels 11, 11). The chemical solution spraying device for agricultural work vehicles according to claim 1, wherein   The agricultural work vehicle (1) is self-propelled with left and right front wheels (9, 9) and left and right rear wheels (11, 11). The agricultural work vehicle (1) includes a chemical tank (2), a control pump (6 ) And a pressure adjusting device (31), and the chemical solution whose spraying pressure is adjusted is sent to the vertical boom sprayer (52). The agricultural work vehicle according to claim 1 or 2, Chemical spraying device.

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