JP5998726B2 - Chemical spray vehicle - Google Patents

Description

  The present invention relates to a chemical solution spraying vehicle for spraying a chemical solution on a field with a boom.

  Patent Document 1 describes a configuration in which a boom receiver is attached to the rear part of a traveling vehicle body. Patent Document 2 describes a configuration in which a chemical tank is attached to and detached from a traveling vehicle body.

Japanese Patent No. 4259207 Japanese Patent No. 2917562

  In Patent Document 1, when the chemical tank is attached / detached, the boom receiver becomes an obstacle and is difficult to attach / detach. In addition, since the distance from the mounting portion of the boom receiver to the front end is increased, the vibration of the front end portion of the boom receiver is increased during traveling, so that the boom is likely to swing.

  In patent document 2, since the boom which spread | disperses a chemical | medical solution is not received in a rear part, the attitude | position of the boom at the time of an accommodation position is not stabilized.

  An object of the present invention is to provide a chemical spray vehicle in which a chemical tank can be easily attached and detached while a boom receiver is provided on the rear side to stabilize the posture of the boom during the storage posture.

  In order to solve this technical problem, the present invention takes the following technical means.

The invention according to claim 1 is a chemical solution spraying vehicle equipped with a chemical solution tank (8) for storing a chemical solution in a traveling vehicle body (3) and a boom (17) for spraying the chemical solution. The boom (17) includes a left boom (17b) and a right boom (17c) that switch between a spreading posture that spreads to the left and right sides of the traveling vehicle body (3) and a storage posture that is a rear-up tilted posture. when retracted position, left boom (17b) and right boom (17c) receiving a boom respectively configured to support at (54) receiving body of (54c), only the attachment receiving boom (54) to the chemical tank (8), the boom (17) is supported by the elevating link (16), and the elevating link (16) is moved up and down by a single elevating cylinder (15), and the boom receiver is attached to the chemical tank after the boom. (54) and a front boom receiver (52) provided on the side of the bonnet (5), the receiver (54c) of the rear boom (54) is more than the receiver (52c) of the front boom receiver (52). The chemical solution spraying vehicle is characterized by being provided at a high position.

  According to the second aspect of the present invention, the mounting portion (54a) of the boom receiver (54) is attached to the upper portion of the chemical liquid tank (8), and the right and left sides of the chemical liquid tank (8) are attached from the mounting portion (54a) of the boom receiver (54). The extension shaft portion (54b) extending toward the outside has a front end (54c) that has a bifurcated end, and the reception body (54c) is provided at a position higher than the upper surface of the chemical tank (8). It is set as the chemical | medical solution spraying vehicle of Claim 1.

  According to a third aspect of the present invention, the boom receiver (54) includes a boom attachment shaft (54a) extending in the left-right direction at a position facing the upper back of the chemical solution tank (8), and a chemical solution tank (from the boom attachment shaft (54a)). 8) an extension shaft portion (54b) extending toward the left and right sides, and a receiving body (54c) which forms a bifurcated tip portion of the left and right extension shaft portions (54b), and the boom mounting shaft (54a) It is attached to the back surface of a chemical | medical solution tank (8), It is set as the chemical | medical solution spraying vehicle of Claim 1 characterized by the above-mentioned.

According to the first aspect of the present invention, the chemical tank and the boom receiver can be attached and detached in a connected state. Moreover, there is no obstructing member behind the chemical tank, and the chemical tank is easy to attach and detach. Moreover, although the structure which raises / lowers the raising / lowering link (16) with a single raising / lowering cylinder (15) tends to become unstable in the accommodation attitude | position of a right-and-left boom (17), a front boom receiver (52) and a rear boom receiver (54), the posture of the boom (17) during the storage posture can be stabilized.

  According to the second aspect of the invention, by attaching the attachment portion (54a) of the boom receiver (54) to the upper part of the chemical tank, the distance from the attachment portion to the receiving body (54c) is shortened, and the boom receiver ( 54) can be reduced, and swinging of the boom (17) during the storage posture can be reduced.

  According to the third aspect of the present invention, by attaching the mounting portion (54a) of the boom receiver (54) to the upper part of the chemical tank, the distance from the mounting portion to the receiving body (54c) is shortened, and the boom receiver ( 54) can be reduced, and swinging of the boom (17) during the storage posture can be reduced.

  Moreover, the attachment structure of a boom receiver can be strengthened by attaching the left and right receiving bodies (54c) with a common boom mounting shaft (54a).

Front view of chemical spray vehicle Side view of chemical spray vehicle Rear view of chemical spray vehicle Top view of chemical spray vehicle Diagram showing pump drive transmission configuration Diagram showing chemical spray pipe Diagram showing chemical spraying work as seen from the front Diagram showing the inside of the mission case Enlarged view of the periphery of the lifting link as seen from the side Enlarged view of the area around the chemical supply operation section seen from the plane The figure explaining the turning action in the shore when seen from the plane

  The chemical solution spraying vehicle according to the embodiment of the present invention will be described below. In the present embodiment, the traveling direction side of the vehicle is referred to as the front side.

  A bonnet 5 that houses an engine 4 is provided on the front side of a traveling vehicle body 3 that includes a pair of left and right front wheels 1 and a rear wheel 2. A steering handle 6 is provided behind the bonnet 5, and a driver seat 7 is provided behind the steering handle 6. A chemical solution tank 8 for storing a chemical solution is provided behind the driver seat 7. A floor 9 is provided below the steering handle 6, and a step 10 on which the operator gets on and off is provided on the left and right sides of the floor 9. A fuel tank 67 is provided inside the step 10, and the fuel tank 67 is attached below the left and right sides of the floor 9. A battery 73 is exposed on one side of the bonnet 5. A gantry 75 is provided behind the chemical liquid tank 8, and a poly tank 76 is mounted on the gantry 75 to store water for washing the hands of the operator.

  An operation panel 11 is provided in front of the steering handle 6, and a speedometer 12, an elevating switch 13 that elevates the elevating link 16 by extending and retracting the elevating cylinder 15, and an engine start switch 14 are provided.

  A lifting link 16 that is lifted and lowered by a hydraulic or electric lifting cylinder 15 is provided on the front side of the bonnet 5, and a spraying device for spraying a chemical solution, that is, a boom 17 is attached to the front portion of the lifting link 16. The boom 17 includes a middle boom 17a on the front side of the traveling vehicle body 3, a left boom 17b and a right boom 17c that spread on both the left and right sides of the traveling vehicle body 3 when sprayed. A number of nozzles 18 for spraying a chemical solution are attached. The right boom 17c and the left boom 17b are in a rear-upward inclined posture on the left and right sides of the traveling vehicle body 3 when not sprayed, that is, when traveling, and are received by the boom receiver, that is, the front boom receiver 52 and the rear boom receiver 54, and are in the storage attitude. I have to.

  On the left and right sides of the driver seat 7, there is provided a chemical solution supply operation unit 19 for providing various operation tools for performing operations for supplying the chemical solution in the chemical solution tank 8 to the boom 17. A shift lever 20 for traveling is provided. The traveling speed change lever 20 of the present embodiment has a configuration in which a main speed change lever 20b is disposed adjacent to the front side and a sub speed change lever 20a is disposed adjacent to the rear side and operated in the front-rear direction.

  On the left and right sides of the steering handle 6 and in front of the chemical supply operation unit 19, the left boom operating lever 57 for operating the left boom 17b to the storage position or the spraying position and the right boom 17c to the storage position or the spraying position are operated. The right boom operation lever 58 is arranged side by side. The left boom operation lever 57 and the left boom 17 b are connected by a left boom operation wire 70, and the right boom operation lever and the right boom 17 c are connected by a right boom operation wire 71.

  Next, the chemical solution supply circuit will be described.

  A pump 21 that draws the chemical solution in the chemical solution tank 8 communicates with a first chemical solution passage pipe 22 connected to the bottom of the chemical solution tank 8. In the middle of the first chemical liquid passage tube 22, a filter 24 for removing foreign substances mixed in the chemical liquid and an out-of-machine discharge switching valve 25 for switching whether the chemical liquid is supplied to the pump 21 side or discharged outside the apparatus are provided. A second chemical liquid passage pipe 23 is connected to the pump 21 and branches from the second chemical liquid passage pipe 23 into a left boom pipe 26, a middle boom pipe 27, and a right boom pipe 28. The left boom pipe 26, the middle boom pipe 27, and the right boom pipe 28 are provided with a left boom cock 29, a middle boom cock 30, and a right boom cock 31, respectively, and a left boom 17b, a middle boom 17a, and a right boom. It is possible to operate to supply the chemical solution to each 17c or to stop the supply. In addition, a pressure gauge 32 that measures and displays the pressure of the chemical solution in the second chemical solution passage pipe 23 and a pressure adjustment valve 33 that adjusts the pressure of the chemical solution are provided.

  The second chemical liquid passage pipe 23 returns the chemical liquid to the chemical liquid tank 8 without passing through the pressure adjusting valve 33, and the chemical liquid in the chemical liquid tank 8 by returning the chemical liquid to the bottom of the chemical liquid tank 8 during the chemical liquid spraying operation. An agitating tube 35 that applies a stirring action to make the concentration of the medicinal solution constant and an excess medicinal solution tube 36 that returns the surplus medicinal solution to the medicinal solution tank 8 by adjusting the pressure adjusting valve 33 are communicated with each other.

  The return pipe 34 and the second chemical liquid passage pipe 23 communicate with each other via a return pipe switching cock 50, and the stirring pipe 35 and the second chemical liquid passage pipe 23 communicate with each other via a stirring cock 51, The second chemical liquid passage tube 23 is configured to communicate with the pressure adjustment valve 33.

  Next, the mission case 38 will be described.

  The clutch 37 is provided on the upper side of the input shaft 42 extending in the front-rear direction, and is turned on and off by operating the clutch pedal 56. The power from the engine 4 is transmitted to the upper side of the input shaft 42. On the lower side of the input shaft, a gear for the main transmission 39 and the auxiliary transmission 40 and an on / off gear 41 for the pump 21 are provided. A transmission pulley 43 of the pump 21 is attached to a portion that penetrates the transmission case 38 on the lower side of the input shaft 42 and protrudes out of the transmission case, and is transmitted by a belt with the input pulley 48 of the pump 21. . The on / off gear 41 of the pump 21 is operated by a pump on / off operation lever 44 via a shifter 46. The mission case 38 is disposed below the left and right central portions of the floor 9 on the front side of the driver seat 7 and on the side of the fuel tank 67, and the pump 21 is provided below the driver seat 7. Since the pump on / off operation lever 44 is provided on one side of the driver's seat 7, the pump on / off operation lever 44 and the on / off gear 41 on the lower side of the input shaft 42 can be provided close to each other. The configuration can be simplified.

  The traveling shaft 45 is configured to be transmitted from the input shaft 42. A brake 47 is operated by a brake pedal 49 of the floor.

  Details of the chemical solution supply operation unit 19 will be described.

  A return pipe switching cock 50, a stirring pipe cock 51, a pressure adjustment dial 33 a of the pressure adjustment valve 33, a pump on / off operation lever 44, and a pressure gauge 32 are provided on the upper surface side of the chemical liquid supply operation unit 19. Further, a left boom cock 29, a middle boom cock 30, and a right boom cock 31 are juxtaposed on the front side of the chemical solution supply operation unit 19.

  Next, the configuration of a pair of left and right boom receivers that respectively receive the left boom 17b and the right boom 17c will be described.

  The front boom receiver 52 has an attachment shaft 52a attached to the link support member 53 that supports the elevating link 16, a curved shaft 52b formed from a curved shape extending from the attachment shaft 52a, and a bifurcated shape extending from the curved shaft 52b. It is formed with the receiving body 52c formed in this. The receiving body 52 c is located above the front wheel 1.

  The rear boom receiver 54 has a rear boom mounting shaft 54a extending in the left-right direction at a position facing the upper back of the chemical liquid tank 8, an extension shaft portion 54b extending from the rear boom mounting shaft 54a toward the left and right outer sides of the chemical liquid tank 8, The distal end portions of the left and right extension shaft portions 54b are formed by a receiving body 54c formed in a bifurcated shape. The rear boom mounting shaft 54 a is configured to be detachable from the back surface of the chemical liquid tank 8 by a mounting tool 55.

  Thereafter, according to the configuration of the boom receiver 54, the length of the left and right extension shaft portions 54b can be shortened, so that vibration during traveling can be reduced and the boom can be made difficult to break.

  In the present embodiment, the configuration in which the lifting link 16 is moved up and down by a single lifting cylinder 15 is likely to cause the left and right boom storage postures to become unstable, but is received by the front boom receiver 52 and the rear boom receiver 54. The posture of the boom 17 during the storage posture can be stabilized.

  Next, attachment / detachment of the chemical solution tank will be described.

  The chemical solution tank is configured to be detachable from the traveling vehicle body with a fixture (not shown). When removing from the traveling vehicle body during maintenance, remove the poly tank, remove the fixture (not shown), and move the boom 17 upward from the stowed position, the chemical tank is directed rearward as in Patent Document 2 described above. Can be removed. The chemical tank 8 can be removed with the boom receiver attached to the chemical tank 8, that is, the rear boom receiver 54 attached to the chemical tank 8.

  Moreover, when attaching the removed chemical | medical solution tank 8 to the traveling vehicle body 3, the reverse process to the time of removing is performed.

  The rear boom receiver 54 of the present embodiment is configured to attach a single rear boom mounting shaft 54a to the back surface of the chemical liquid tank 8, but may be configured to be respectively attached to the side surface of the chemical liquid tank. In the case of a configuration that is mounted on the side surface, the rear boom mounting shaft 54a is a pair of left and right configurations (not shown). That is, by attaching the mounting portion 54a of the rear boom receiver 54 to the upper part of the chemical tank, the distance from the mounting portion to the receiving body 54c (the length of the extension shaft portion 54b) is shortened, and the boom 17 travels in the storage posture. The vibration of the rear boom receiver 54 at the time can be reduced, and the swing of the boom 17 in the storage posture can be reduced. As a result, it is possible to prevent the boom (17) from being damaged due to swinging.

  Next, the chemical spraying operation by the chemical spray vehicle will be described.

  When the operator sits on the driver's seat 7 and operates the engine start switch 14, the engine 4 starts to be driven. When the traveling speed change lever 20 is operated while the clutch pedal 56 is depressed, the vehicle travels. Entering the field, the left boom operating lever 57 and the right boom operating lever 58 are operated at the chemical spraying position, and the left boom 17b and the right boom 17c are spread to the left and right sides of the traveling vehicle body 3 to be in a spraying posture. Moreover, the raising / lowering switch 13 is operated and the boom 17 is made into the position according to the height of the crop. When the pump on / off operation lever 44 is operated while the clutch pedal 56 is depressed and the on / off gear 41 is operated to the on side, the pump 21 starts to be driven and the chemical liquid is sprayed from the nozzle 18 of the boom 17. The operator sprays the chemical solution while traveling on the field. The operator operates the sprayer at a pressure corresponding to the vehicle speed while visually checking the speedometer 12 and the pressure gauge 32, thereby spraying a uniform chemical solution on the unit area. To do.

  When the vehicle travels while spraying chemicals to the edge of the field and turns at the edge of the farm, the boom cock (the right boom cock 31 in FIG. 11) on the outside of the turn is operated to the supply stop side. That is, the left boom 17b and the middle boom 17a on the inside of the turn turn while spraying the chemical solution, thereby preventing an unsprayed area from appearing and spreading the chemical solution evenly over the entire field. And the right boom 17c of the turning outer side can prevent spraying a chemical liquid at the time of dripping by stopping the chemical liquid spraying. During turning, the boom on the outside of the turning may be raised to a non-spraying posture to prevent the boom from coming into contact with the saddle.

  Next, the roles of the return pipe switching cock 50 and the stirring pipe cock 51 will be described.

  The return pipe switching cock 50 closes the return pipe 34 when spraying the chemical solution. Then, when the spraying of the chemical liquid is temporarily stopped, the chemical liquid passing through the first chemical liquid passage pipe 23 is not supplied to the boom 17 side by switching operation so that the return pipe 34 side is opened. Return to tank 8. That is, it is used when the spraying of the chemical liquid is temporarily stopped while the pump 21 is continuously driven. The pump on / off operation lever 44 can stop the driving of the pump 21 to stop the spraying of the chemical solution. However, since the pump on / off operation lever 44 needs to be operated while the clutch pedal 56 is depressed, the operation is troublesome. In addition, the return pipe switching cock 50 can be operated only when the traveling is stopped. However, since the return cock switching cock 50 can be operated by operating the cock, there is an advantage that the operation can be easily performed while traveling.

  The stirring tube cock 51 opens the stirring tube 35 side in the chemical solution spraying state. That is, the chemical solution is supplied to the boom 17 side and a part of the chemical solution is supplied to the stirring tube 35. Then, the chemical liquid that returns from the stirring tube 35 to the bottom of the chemical liquid tank 8 gives a stirring action to the chemical liquid in the chemical liquid tank 8, and the concentration of the chemical liquid in the chemical liquid tank 8 can be made constant. When the chemical solution in the chemical solution tank 8 becomes small during the chemical solution spraying operation, all the chemical solution from the chemical solution tank is supplied to the boom 17 by operating the stirring tube cock 51 so that the stirring tube 35 is closed. Therefore, the pressure of the chemical solution can be maintained until the chemical solution is exhausted. The amount of the chemical liquid in the chemical liquid tank 8 is confirmed by an operator visually confirming a liquid level gauge provided on the front side of the chemical liquid tank 8.

  Next, the configuration of the lift link positioning plate 65 will be described.

  The lifting link positioning plate 65 reduces the swinging of the lifting link 16 due to the vibration caused by the traveling in the state where the boom 17 is stored in the boom receiver (52, 54). This is to reduce the collision with (52, 54). The elevating link positioning plate 65 is configured by fastening a pair of plates 65a with bolts 65b with the elevating link 16 interposed therebetween, and attaching rollers 65c to the bolts 65b. The lift link positioning plate 65 slides along the lift link 16 by the action of the roller 65c. Further, a hook 65d is provided at the rear part of the lift link positioning plate 65, and a V-shaped stay 65e is provided at the lower part.

  At the time of the chemical spraying operation, the elevating link positioning plate 65 is slid, and the position of the elevating link positioning plate 65 is fixed by attaching the hook 65d to the hanger 66 provided on the base side of the elevating link 16. And the state where the position was fixed irrespective of the raising / lowering operation | movement of the raising / lowering link 16 is maintained.

  When the boom 17 is housed in the front boom receiver 52 and the rear boom receiver 54, the hook 65d is removed from the hanger 66, and the lifting link positioning plate 65 is slid until it comes into contact with the positioning pin 67 formed on the lifting link 16. Then, a V-shaped stay is placed on a positioning shaft 69 extending in the left-right direction from the bumper 68 of the traveling vehicle body 3. Then, the position of the elevating link 16 is determined by the action of the V-shaped stay, and the swinging of the elevating link due to vibration during traveling is reduced. Therefore, the swing of the boom 17 is also reduced, the collision with the boom receivers 52 and 54 is reduced, and damage or the like can be prevented.

  The lifting link positioning plate 65 and the positioning shaft 69 are shown in a plan view (FIG. 4) in the overall view, but are omitted in the front view (FIG. 1).

  Next, an operation for taking out a small amount of chemical solution remaining in the chemical solution tank 8 after the chemical solution spraying operation will be described.

  First, the cap 72 provided on the outside discharge side of the outside discharge switching valve 25 is removed, and the outside discharge switching valve 25 is switched from the chemical solution supply side to the outside discharge side. Then, the chemical solution flows down from the bottom of the chemical solution tank 8 and is discharged outside the apparatus. Conventionally, the drain is provided at the bottom of the chemical tank and the chemical is discharged from the drain. However, when the drain is opened, the chemical may adhere to the operator's hand. With the configuration of the present embodiment, the chemical solution does not adhere to the operator's hand, and the chemical solution can be discharged safely.

  Next, a water intake device 80 for supplying water from a water source such as a river to the chemical tank 8 will be described. Usually, the chemical solution is diluted by adding water to the stock solution to form a chemical solution for spraying. Therefore, when a large amount of water is quickly supplied from the water source, a water intake device is attached and the water intake operation is performed.

  The water intake device 40 is composed of a water intake part 81 containing a turbine (not shown) for taking water from a water source, a water intake first pipe 82, and a water intake second pipe 83 through which water taken from the water intake part 81 passes. Yes.

  At the time of water intake, the water intake first pipe 82 is connected to the switching portion 84 provided on the stirring pipe 35 provided on the left and right sides of the chemical liquid tank 8, the water intake portion 81 is introduced into the water source, and the water intake second pipe 83 is connected to the chemical liquid tank. 8 is opened and inserted into the chemical tank 8. When the pump 21 is driven, the switching valve 85 is operated, and the first intake water pipe 82 and the agitation pipe 35 are communicated with each other, the air of the driven pump 21 passes through the first intake water pipe 82 from the agitation pipe 35. Then, the water is supplied to the water intake unit 81 and the turbine of the water intake unit 81 is driven. Then, the water pumped up from the water source passes through the second water intake pipe 83 and is supplied into the chemical tank 8.

  Another embodiment of the water intake operation will be described.

  Some water is stored in the chemical tank 8 in advance, the switching valve 85 is operated, the first water intake pipe 82 and the agitation pipe 35 are communicated, and the pump 21 is started to be driven. Then, the water in the chemical liquid tank 8 is sucked by the pump 21, and the water that has passed through the stirring pipe 35 from the second chemical liquid passage pipe 23 passes through the first water intake pipe 82 from the pump 21 and is supplied to the water intake section 81, Turbine starts to be driven by hydraulic power. Thereafter, the pump 21 sucks water from the chemical liquid tank 8 and supplies water to the water intake section 41, while pumping up water from the water intake section 81 and supplying water to the chemical liquid tank 8. That is, the amount of water in the chemical solution tank 8 is increased by increasing the amount of water pumped from the water intake unit 81 than the amount of water supplied from the pump 21 to the water intake unit 81.

DESCRIPTION OF SYMBOLS 3 Traveling vehicle body 4 Engine 6 Steering handle 7 Driver's seat 8 Chemical liquid tank 9 Flower 13 Lift switch 15 Lift cylinder 16 Lift link 17 Spraying device (boom)
17a Middle boom 17b Left boom 17c Right boom 19 Chemical solution supply operation part 20 Operation levers for shifting gears (main transmission lever 20b and auxiliary transmission lever 20a)
21 Pump 22 1st chemical | medical solution passage tube 23 2nd chemical | medical solution passage tube 32 Pressure gauge 33 Pressure adjustment valve 33a Pressure regulator (33a)
34 Return pipe 35 Stirring pipe 38 Mission case 39 Main speed change 40 Sub speed change 41 On / off gear 44 Pump on / off operation lever 50 Return pipe switching operation tool (return pipe switching cock)
51 Stirring tube cock 52 Boom receiver (front boom receiver)
54 Boom receiver (rear boom receiver)
54a (boom receiver) mounting portion 54b (boom receiver) extension shaft portion 54c (boom receiver) receiver 57 left boom operation lever 58 right boom operation lever

Claims (3)

In a chemical spraying vehicle equipped with a chemical tank that stores chemicals in a traveling vehicle body and a boom that sprays chemicals,
The chemical tank is configured to be detachably attached to the traveling vehicle body,
The boom is equipped with a left boom and a right boom that switch between a spreading posture that spreads on both the left and right sides of the traveling vehicle body, and a storage posture that becomes a tilting posture that rises backward,
When in the stowed position, the left and right booms are each supported by a boom receiver.
Mounting the boom received in the chemical tank,
The boom is supported by the lifting link, and the lifting link is moved up and down by a single lifting cylinder.
The boom receiver includes a rear boom receiver attached to the chemical tank and a front boom receiver provided on the side of the bonnet, and the rear boom receiver is provided at a higher position than the front boom receiver. .   A boom receiver mounting portion is attached to an upper portion of the chemical liquid tank, and a distal end of the extension shaft portion extending from the boom receiver mounting portion toward the left and right outer sides of the chemical liquid tank is formed in a bifurcated shape. The chemical solution spraying vehicle according to claim 1, wherein the vehicle is provided at a position higher than the upper surface of the liquid medicine.   The boom receiver includes a boom mounting shaft that extends in the left-right direction at a position facing the rear upper portion of the chemical tank, an extension shaft that extends from the boom mounting shaft toward the left and right sides of the chemical tank, and tip portions of the left and right extension shafts. 2. The chemical solution spraying vehicle according to claim 1, further comprising: a receiving body that is formed in a bifurcated shape, wherein the boom mounting shaft is attached to a back surface of the chemical solution tank.

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