JP2012157250A - Spraying work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a worker to carry out the work of setting a chemical solution tank alone by utilizing lifting links for lifting a working machine disposed in the rear of a machine body in a spraying work vehicle with the chemical solution tank disposed in the rear of the machine body.SOLUTION: The spraying work vehicle is configured so that the front side of the bottom of the chemical solution tank can be attached to the distal ends of right and left lifting links. The front side of the bottom of the chemical solution tank in the grounded state with the rear side turned downward and the front side turned upward is connected to the distal ends of the right and left lifting links which are rotated downward on the rear side, and the right and left lifting links are rotated upward in the front to raise the chemical solution tank. When the rear side of the bottom of the chemical solution tank reaches the surface on which a travelling vehicle body is set, the chemical solution tank is detached from the right and left lifting links, and next, the chemical solution tank is rotated downward to transfer to the set state while the bottom of the chemical solution tank is supported from below by the distal ends of the right and left lifting links.

Description

  The present invention relates to a lifting / lowering installation apparatus for a chemical tank of a spray work vehicle.

  A spray tank is provided with a chemical tank at the rear of the fuselage, and left and right side spray booms for spraying chemicals that can be changed between a use state that expands and contracts in the left-right direction and a storage state that extends along the front-rear direction of the vehicle body. Is known (Patent Document 1).

JP 2006-88094 A

The chemical tank in the spraying vehicle of the background art is a hard work because it is necessary for a plurality of workers to remove it when removing the maintenance.
The present invention is intended to solve the above-mentioned problems by effectively using a lifting link for lifting and lowering the work implement provided on the rear side portion of the scattering work vehicle, so that one worker can easily attach and remove it. .

In order to solve such problems, the present invention has taken the following technical means.
The invention according to claim 1 is provided with a chemical tank (9) at the rear part of the traveling vehicle body (2), and the right and left lifting links (17, 17) for raising and lowering the working machine extending rearward at the rear part of the machine body can be rotated up and down. In the spray work vehicle provided at the top, the front side of the bottom surface of the chemical liquid tank (9) can be attached to the tip of the left and right lifting links (17, 17), with the rear side down and the front side up. The front side of the bottom surface of the liquid chemical tank (9) that is in contact with the ground is connected to the tip of the left and right lifting links (17, 17) that are rotating downward downward, and the left and right lifting links (17, 17) are connected. When the chemical tank (9) is lifted up and lifted up, and the bottom rear side of the chemical tank (9) reaches the installation surface of the traveling vehicle body (2), the chemical tank (9 ), And then left and right lifting links (17, 17 And spraying work vehicle, characterized in that so as to move the bottom surface to the lowered rotation and installed state while supporting the from the lower side of the chemical tank (9) at the tip.

  According to a second aspect of the present invention, in the first aspect of the present invention, the chemical liquid tank (9) is provided with a stand (23) which can be supported with the front side portion thereof facing upward and the rear side portion thereof being directed downward. This is a spraying vehicle characterized by this.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a roller (24, 24) that rotates about a horizontal axis is provided at the tip of the left / right lifting link (17, 17). A spraying work vehicle characterized by

  According to a fourth aspect of the present invention, in the third aspect of the invention, the roller (24, 24) that rotates about the horizontal axis on the left / right lifting link (17, 17) side on the bottom surface of the chemical tank (9). It is set as the dispersion | distribution work vehicle characterized by providing the guide groove (9a, 9a) which can be fitted along the front-back direction.

  According to the first aspect of the present invention, the lift link (17, 17) that rotates the bottom front side portion of the grounded chemical solution tank (9) with the rear side portion downward and the front side portion upward downward downward. ), The left and right elevating links (17, 17) are pivoted forward and upward to lift the chemical tank (9), and the rear side of the bottom of the chemical tank (9) is the installation surface of the traveling vehicle body (2). Is reached, the chemical solution tank (9) is removed from the left and right lifting links (17, 17), and then the bottom of the chemical solution tank (9) is supported from below by the tip of the left and right lifting links (17, 17). It can be set in an installed state by rotating downward while using the left and right lifting links (17, 17) for lifting and lowering the work machine, and the chemical tank (9) can be attached and removed by one worker. Can do.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the chemical tank (9) is located above the installation part in the middle of raising and lowering, the front side part is located above and the rear side part is located below. It can be supported by the stand (23) in a forwardly inclined posture, and can be lifted and lowered safely while preventing the chemical liquid tank (9) from falling.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the rollers (24, 24) that rotate around the axis in the left-right direction are provided at the distal ends of the left and right lifting links (17, 17). ), The bottom surface of the chemical tank (9) is supported by the rollers (24, 24) of the left and right lifting links (17, 17) while the chemical tank (9) is being raised and lowered slowly from the front ascending posture to the horizontal posture. Change and move up and down in a stable state.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, a front ascending posture in which the front side portion of the chemical liquid tank (9) is located above and the lower side portion is located below in the middle of ascending and descending Then, the left / right lifting link (17, 17) and the chemical liquid tank (9) are removed and the left / right lifting link (17, 17) is lowered to move up and down in the guide groove (9a, 9a) on the bottom surface of the chemical liquid tank (9). The roller (24,...) On the link (17, 17) side is fitted and moved while rotating downward on the rear side, so that the chemical tank (9) can be gradually corrected to a horizontal posture and left and right in a stable state. It can be lowered to the installation part while the position of the direction is appropriate.

The side view of a spreading work vehicle. The top view of a spreading work vehicle. The rear view of a spreading work vehicle. The expanded side view of a spreading work vehicle. The cutaway side view of the front side part of a spreading work vehicle. The rear view of the front side part of a spreading work vehicle. The perspective view and side view of a radiator part. The perspective view and side view of a radiator part. The side view of a spreading work vehicle. The top view of a spreading work vehicle. The front view of a spreading work vehicle. The block diagram of a control spraying apparatus. The block diagram of a control spraying apparatus. The perspective view of the rear part of a spreading work vehicle.

First, the overall configuration of a spraying work vehicle 1 for spraying a chemical solution provided with the present invention will be described.
The traveling vehicle body 2 of the scattering work vehicle 1 is provided with left and right front wheels 3 and 3 and left and right rear wheels 4 and 4 having substantially the same diameter, and a control spraying device Y is attached to the front side portion of the vehicle body 2. An engine E is mounted above the left and right front wheels 3, 3 of the traveling vehicle body 2, and the engine E is covered with a hood 5. A pilot seat 6 is provided above the left and right front wheels 3, 3 and the left and right rear wheels 4, 4, and a handle 7 is provided in front of the pilot seat 6. When the steering wheel 7 is steered to the left and right, a four-wheel steering configuration is adopted in which the left and right front wheels 3 and 3 and the left and right rear wheels 4 and 4 are steered simultaneously. Further, a chemical tank 9 is detachably attached so as to surround the cockpit 6, and a control pump 10 is provided below the chemical tank 9.

  The control spraying device Y is composed of a center spraying boom 11 and left and right side spraying booms 12, 12, and is supported by a boom support member 15 that can be adjusted up and down on the front side of the machine body. The center spreading boom 11 is attached to the boom support member 15 along the left-right direction. Further, the left and right sides of the boom support member 15 support the bases of the left and right side spreading booms 12 and 12 so as to be rotatable around the front and rear axis, and the right and left opening and closing cylinders 17 and 17 project the right and left sides. It is configured to be rotatable in a storage posture along the inside of the machine body.

  Therefore, the chemical solution in the chemical solution tank 9 is sent to the control spraying device Y by the control pump 10 and sprays the chemical solution from the spray nozzles 14 of the center spraying boom 11 and the left and right side spraying booms 12, 12.

Next, the raising / lowering attachment removal structure of the chemical | medical solution tank 9 is demonstrated based on FIG.
A chemical solution tank 9 is mounted on the rear portion of the traveling vehicle body 2 so as to surround both the left and right sides and the rear portion of the cockpit 6, and left and right lifting links 17 and 17 are provided on the rear side portion of the traveling vehicle body 2. The left and right elevating links 17, 17 are configured to bend in a substantially L shape in a side view, and the front base end is configured as an integral left and right frame, and the front end is pivotally supported about a left and right axis. The left and right elevating links 17 and 17 are extended rearward from the left and right sides of the unit, and the left and right elevating cylinders 17 and 17 are rotated up and down by the expansion and contraction of the elevating cylinder (not shown). In the state where the portion protrudes rearward from the rear side end portion of the traveling chassis 2, it is configured to move up and down over the region of the upper front side portion from the lower portion of the bottom surface of the chemical solution tank 9 in the installed state.

  In addition, rollers 24 and 24 that rotate about a horizontal axis are provided at the ends of the left and right elevating links 17 and 17. An upper roller 22u is provided at the upper rear side of the chemical liquid tank 9, and a lower roller 22d is provided at the lower rear side so as to protrude rearward. Further, the chemical tank 9 is provided with a stand 23 that lifts and supports the liquid tank 9 with its rear side facing downward and the front side facing upward.

  The upper end of the stand 23 is supported so as to be rotatable about the axis of the lower roller 22d, and the stand 23 stands up in a state where the chemical liquid tank 9 has been moved to the highest position by the left and right lifts 17 and 17, and the chemical liquid tank 9 Is configured to support.

  Then, as shown in FIG. 4, the lift links 17, 17 are supported by the upper roller 22 u and the lower roller 22 d in a grounded state with the rear side of the chemical liquid tank 9 facing down, and are pivoted downwardly downward. The locking tools 25, 25 provided on the front side of the bottom surface of the chemical tank 9 are attached to the rollers 24, 24 on the side.

  Next, when the left and right elevating links 17, 17 are rotated from the lowest position to the front upper side, the chemical tank 9 is gradually lifted, and when the bottom side of the bottom of the chemical tank 9 reaches the installation portion of the traveling vehicle body 2, the stand 23 Rises, and the chemical tank 9 is supported in a front-up position. In this state, when the latching tool 25 is removed from the rollers 24 and 24 and the left and right elevating links 17 and 17 are rotated downward, the left and right elevating and lowering is performed along the front and rear guide grooves 9 a and 9 a provided on the bottom surface of the chemical tank 9. The rollers 24, 24 on the links 17, 17 side move to the rear side while rotating, the front side portion of the chemical tank 9 is lowered, and the horizontal posture can be set.

  When removing the chemical tank 9 from the traveling vehicle body 2, the stand 23 is set on the chemical tank 9, the lower portion of the stand 23 is grounded, the chemical tank 9 is unlocked with respect to the traveling vehicle body 2, and is in the lowest lowered position. The right and left elevating links 17 and 17 are lifted, and the bottom rear side portion of the chemical tank 9 is lifted by the rollers 24 and 24 at the front ends to be lifted from the traveling vehicle body 2 to advance the scattering work vehicle 1. Then, the traveling vehicle body 2 moves rearward with respect to the chemical liquid tank 9, and when the rear side portion of the chemical liquid tank 9 moves greatly and moves downward, the lower end portion of the stand 23 is grounded, and the front end portion of the chemical liquid tank 9 is the traveling vehicle body 2. If it leaves | separates back from the rear-end part, the front side part of the chemical | medical solution tank 9 will rotate below, will be supported by the stand 23, and can be removed easily.

  According to the said structure, the chemical | medical solution tank 9 can be attached and removed by one person using the right-and-left raising / lowering links 17 and 17 for work implement raising / lowering. Further, when the rear side of the bottom surface of the chemical liquid tank 9 moves to the installation part of the traveling vehicle body 2 while the chemical liquid tank 9 is moving up and down, the chemical liquid tank 9 in the front ascending posture or the rear ascending posture can be supported by the stand 23. It is possible to prevent the chemical tank 9 from falling and to move up and down in a stable state, which is safe.

  Further, when the chemical solution tank 9 is removed from the left and right lifting links 17 and 17 and the left and right lifting links 17 and 17 are rotated downward in the front-upward inclined posture in which the front side portion of the chemical solution tank 9 being installed is positioned upward, the chemical solution The rollers 24 on the left and right elevating links 17, 17 side move to the rear side along the front and rear guide grooves 9 a, 9 a provided on the bottom surface of the tank 9, and gradually move the chemical tank 9 in the forward ascending posture. Therefore, the chemical tank 9 can be safely installed in a stable state.

Next, the dust removal configuration of the radiator 32 will be described with reference to FIGS. 5 and 6.
An engine E is mounted on the front side of the traveling vehicle body 2 and covered with a bonnet 5, a cooling fan 31 is provided on the rear side of the engine E, and the cooling fan 31 is connected to the cooling fan 31 from the output shaft of the engine E via a belt transmission. Power is transmitted. A radiator 32 is provided behind the cooling fan 31, and a radiator net 33 is stretched behind the radiator 32.

  Further, the upper portion and both left and right side portions of the radiator 32 are covered with a shroud 34, a frame body 35 is attached to the shroud 34 along, for example, the left-right direction, and a cleaning body 36 is attached to the left and right center portion of the frame body 35. The base end portion of the cleaning body 36 is pivotally supported around the shaft 36a in the front-rear direction at the center portion of the frame body 35, and the brush portion on the front side surface of the cleaning body 36 can be rotated in contact with the rear side surface of the radiator net 33. It is configured to be rotated by a cleaning motor 36b so that dust on the radiator net 33 is removed.

  In addition, the cleaning body 36 is configured to be bent in an arc shape in which an intermediate portion protrudes toward the upper rotation side and a proximal end portion and a distal end portion retract toward the lower rotation side when viewed from the front, and the dust scraped off by the cleaning body 36 is Efficient removal while guiding to the side.

Next, another embodiment of the dust removing configuration of the radiator 32 will be described with reference to FIG.
The upper and left and right sides of the radiator 32 are covered with a shroud 34, and a flat rotating cylinder 38 is provided on the rear side of the shroud 34 so as to be rotatable around a central axis 38a in the front-rear direction. The radiator net 33 is stretched so that the cooling air flows from the rear side to the front side. The rubber roller 40 rotated by the motor 39 is pressed against the outer peripheral surface of the rotating cylinder 38 so that the rotating cylinder 38 is rotated.

  A dust removal cylinder 41 is provided on the rear side surface of the radiator net 33 of the rotary cylinder 38 from the center to the outer periphery, and a suction hose 42 is connected to the outer peripheral end of the dust removal cylinder 41, and a suction fan 43. It is configured to remove dust by suction.

  According to the above configuration, when the suction fan 43 is driven and sucked from the dust removing cylinder 41 while the rubber roller 40 is rotated by the motor 39 and the rotating cylinder 38 is rotated, dust on the radiator net 33 of the rotating cylinder 38 is removed. Can do.

  Further, the dust removing cylinder 41 is disposed opposite to the rear side of the radiator net 33 of the rotating cylinder 38, and the windshield plate 44 is disposed on the front side of the radiator net 33 so as to face the dust removing cylinder 41. The dust on the radiator net 33 can be efficiently removed by suction.

In the above-described configuration, the same effect can be expected even if the dust removing cylinder 41 and the windshield plate 44 are rotated without rotating the rotating cylinder 38.
Next, FIG. 8 will be described.

  An endless belt-like radiator net 33 is wound around the upper and lower rollers 46, 46 so as to face the rear side of the radiator 32, and the upper roller 46 is driven by a motor 47 to rotate the radiator net 33 in the vertical direction. . A dust removal cylinder 48 is arranged on the lower part of the rear side surface of the radiator net 33 so as to face the entire left and right sides, and a dust removal hose 49 is connected to one end of the dust removal cylinder 48 and sucked to the other end of the dust removal hose 49. A fan 43 (or a compressed air fan) is provided to remove dust.

Next, the step configuration of the scattering work vehicle 1 will be described with reference to FIGS. 9 to 11.
A chemical tank 9 is disposed on the rear side of the traveling vehicle body 2 so as to surround both the left and right sides and the rear side of the cockpit 6. Left and right tank steps 52, 52 are provided above the left and right rear wheels 4, 4 on the left and right sides of the chemical tank 9. Also, a carrier 53 is provided at the rear end of the traveling vehicle body 2 so as to extend rearward, and the carrier 53 is provided with left and right rear steps 54, 54 via frame portions 54a, 54a so as to extend to the left and right sides. The left and right rear steps 54 and 54 are configured to be positioned behind the left and right tank steps 52 and 52, have a plurality of upper and lower steps including a left and right lower step 54 b and a left and right upper step 54 c, and the chemical tank 9 It is arranged behind the rear side.

  Further, the chemical liquid tank 9 is made of synthetic resin, the left and right side lower side parts are made thick, nuts are inserted, the brackets 52a and 52a of the left and right tank steps 52 and 52 are fixed with bolts, and the left and right tank steps 52 and 52 can be easily attached and detached.

  Further, the surfaces of the left and right lower side steps 54b and the left and right upper side steps 54c are formed in an expanded metal or mesh shape so as to get on and off the left and right tank steps 52 and 52 while removing mud adhering to the operator's shoes. Easy to wash with water.

  According to the above configuration, the left and right tank steps 52, 52 and the left and right rear steps 54, 54 pass above the left and right rear wheels 4, 4, and can prevent interference with the crop. Further, even when the ground level of the traveling chassis 2 is high, it is possible to easily climb the left and right tank steps 52, 52 from the left and right lower step 54b through the left and right upper step 54c, and the chemical tank 9 can be easily inspected. Can do.

Next, the spraying control of the control spraying device Y will be described based on FIG.
A suction hose 61 is connected to the bottom suction portion of the chemical liquid tank 9, a suction filter 62 is provided in the middle of the suction hose 61, and the end side of the suction hose 61 is connected to the control pump 10. A high-pressure discharge hose 63 is connected to the discharge part of the control pump 10, and its terminal side is connected to the spraying adjustment device 64. The spray adjusting device 64 is provided with a pressure adjusting valve 66, a safety valve 67, and a flow rate control valve 68.

  Accordingly, the chemical liquid of a certain pressure or higher is released from the pressure adjusting valve 66 among the chemical liquid sent by the high pressure discharge hose 65, the pressure is adjusted, and the excess chemical liquid is returned to the chemical liquid tank 9 via the return hose 70. . Further, the adjusted chemical solution is sent to the adjustment discharge hose 65 through the safety valve 67 and the flow rate control valve 68 of the spraying adjustment device 64, and sent to the control spraying device Y while being detected by the flow rate sensor 69 and the pressure sensor 70.

  In the spray control of this embodiment, when the high discharge type control pump 10 in which the discharge amount of the control pump 10 is increased from the standard type is adopted, the driving horsepower of the high discharge type control pump 10 is increased by 2 horsepower, for example. Then, if a high-power engine with an increased output of 2 horsepower is not installed, the spraying performance will be reduced.

  However, in this embodiment, even when the driving horsepower of the control pump 10 is increased, the pressure adjusting valve 66 is adjusted according to the set spray amount while the conventional engine is mounted, so that a small spray state is achieved. It is intended to avoid a decrease in spraying work performance.

  The operating means of the spraying panel 73 is operated, the spraying amount of the control spraying device Y is set to one of the small spraying, the normal spraying, and the large spraying, and the spraying work is started. Then, according to a command from the control controller 60, the set pressure of the pressure adjusting valve 66 is adjusted to 10 kg when spraying a small amount, 20 kg when spraying normally, and 30 kg when spraying a large amount. Therefore, in the case of small amount spraying and normal spraying, the driving horsepower of the engine E of the control pump 10 is reduced, and the extra horsepower is turned to the traveling power of the spraying work vehicle 1 to avoid the deterioration of the spraying work performance. Can do.

  If the safety valve 67 is abolished, a second return hose (not shown) is attached to the safety valve mounting site, the second return hose is connected to the middle part of the return hose 71, and the chemical liquid is recirculated to the chemical liquid tank 9, Cost can be reduced.

  Further, the same effect can be expected even when configured as shown in FIG. The spraying adjusting device 64 is provided with a first pressure regulating valve 66a and a second pressure regulating valve 66b. In the case of a small amount spraying setting, for example, 3 to 5 liters from the first pressure regulating valve 66a to the chemical liquid tank 9 every predetermined time. The pressure is set so that the chemical liquid is recirculated, the second pressure adjustment valve 66b is opened, and the chemical liquid adjusted by the first pressure adjustment valve 66a is sent to the adjustment discharge hose 65 to perform the spraying operation.

  Further, when it is desired to increase the spraying amount slightly, the first pressure adjustment valve 66a is closed so that the chemical liquid does not return to the chemical liquid tank 9, and the second pressure adjustment valve 66b is set to a large amount. Therefore, a large amount of the chemical liquid that has passed through the first pressure adjustment valve 66a flows through the safety valve 67 and the second pressure adjustment valve 66b to the pressure regulating discharge hose 65, and a large amount can be sprayed.

Next, the structure for supplying water to the chemical tank 9 will be described with reference to FIG.
The spray work vehicle 1 is equipped with a jet pump 81 having a higher water supply capacity than the control pump 10. The jet pump 81 is disposed in the water tank 86, a three-way switching type cock 82 is attached to the upper side of the suction hose 61 on the chemical liquid tank 9 side, and the end side of the water supply hose 83 connected to the jet pump 81 is connected to the cock 82. Is detachably connected. A suction filter 62 is interposed in the middle of the suction hose 61, and the terminal side of the suction hose 61 is connected to the control pump 10.

  The end side of the high pressure discharge hose 63 connected to the discharge part of the control pump 10 is connected to the spray manifold 64a of the spray adjusting device 64, and the spilled water supply hose 84 is connected to the safety valve 67 of the spray manifold 64a. The side is connected to the chemical tank 9. The start end side of the circulating water supply hose 85 is connected to the middle part of the high pressure discharge hose 63, and the end side thereof is connected to the water absorption part of the jet pump 81.

  Thus, the water discharged from the jet pump 81 flows from the terminal end side of the water supply hose 83 to the suction hose 61 through the cock 82, is removed by the suction filter 62, and flows from the terminal end side of the suction hose 61 to the control pump 10. Subsequently, it flows from the discharge part of the control pump 10 to the terminal side of the high-pressure discharge hose 63, and is absorbed into the chemical tank 9 through the safety valve 67 of the spray manifold 64 a and the residual water supply hose 84. Further, the water that has not been absorbed by the high-pressure discharge hose 63 returns to the water absorption part of the jet pump 81 through the circulation water supply hose 85 and is sent to the control pump 10 again.

  According to the said structure, the water absorption hose 83 connected to the jet pump 81 can be connected to the suction hose 61 in a low position, and the water absorption preparation work to the chemical | medical solution tank 9 can be made easy. In addition, since a part of the water discharged from the control pump 10 is supplied to the chemical tank 9, it is possible to prevent the water overflowing from the chemical tank 9 from blowing out immediately before the end of water absorption, and to reduce the scattering of the chemical liquid of the operator. it can.

2 Traveling body 9 Chemical liquid tank 9a Guide groove 17 Left / right lifting link 23 Stand 24 Roller

Claims (4)

  Scattering work vehicle having a chemical tank (9) at the rear part of the traveling vehicle body (2) and provided with right and left lifting links (17, 17) for raising and lowering the working machine extending rearward at the rear part of the machine body. The bottom surface of the liquid chemical tank (9) is attachable to the front end of the left and right lifting links (17, 17), and the chemical liquid in a grounded state with the rear side facing downward and the front side facing upward The bottom side of the bottom surface of the tank (9) is connected to the tip of the left / right lifting link (17, 17) that is pivoting downward and downward, and the left / right lifting link (17, 17) is pivoted upward to the front side. When the tank (9) is lifted and the bottom rear side of the chemical solution tank (9) reaches the installation surface of the traveling vehicle body (2), the chemical solution tank (9) is removed from the left and right lifting links (17, 17), At the tip of the lift link (17, 17) Click (9) bottom scatter work vehicle, characterized in that it has to move to the lowered rotation and installed state while supporting the underside of the.   2. The spraying work according to claim 1, wherein the chemical tank (9) is provided with a stand (23) which can be supported with its front side facing upward and its rear side facing downward. car.   3. A spray work vehicle according to claim 1 or 2, wherein a roller (24, 24) that rotates about a left-right axis is provided at a tip of the left / right lifting link (17, 17). .   In the invention of claim 3, the roller (24, 24) rotating around the left / right lifting / lowering link (17, 17) side of the horizontal axis can be fitted to the bottom surface of the chemical liquid tank (9). A scattering work vehicle characterized in that guide grooves (9a, 9a) are provided along the front-rear direction.

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