JP6711342B2 - Drug spray vehicle - Google Patents

Description

The present invention relates to a chemical spray vehicle for spraying chemicals such as pesticides and fertilizers to fields.

In the drug spraying vehicle, spreading spray booms are deployed to the left and right of the machine, and the spraying nozzles of the spraying boom spray the drug onto the field.Therefore, a spray member surrounds the driver's seat on which the worker rides, and the sprayed drug works. The person is prevented from getting down (for example, see Patent Document 1).

In addition, the spreading booms that are deployed to the left and right are held along the left and right sides of the machine after the spraying work is completed.

JP, 2015-112021, A

For the spreader boom, an operator sitting on the driver's seat operates the operating lever of the boom operation box provided near the driver's seat to deploy the spreader boom to the left and right and adjust the ground height. In order to move up to the driver's seat while the operator is stowed in the front-back direction, the worker must pass through the spray boom and move, which may cause the spray boom to malfunction in an unreasonable posture.

The present invention provides a drug spraying vehicle in which a spraying boom is housed along the left and right sides of the machine body in the front-rear direction, and the periphery of the driver's seat is covered with a cover member, so that getting on and off the driver's seat can be performed safely and comfortably. The task is to do.

The problems of the present invention described above are solved by the following technical means.

According to the first aspect of the present invention, the spray boom 20 is provided in front of the traveling vehicle body 2, and the traveling vehicle body 2 is surrounded by the front window transparent member 42, the left and right covering members 100L, 100R, 101L, 101R and the upper covering member 108. In the chemical spray vehicle 1 provided with a driver's seat 3 on which an operator sits, the front window transparent member 42 is erected on the traveling vehicle body 2 in front of the driver's seat 3 with frames 41, 51L, 51R. 51L and 51R are provided with a boom operation box 25 for operating the spray boom 20, and a boom lever 26 of the boom operation box 25 can be operated from the side of the driver's seat 3 and the traveling vehicle body 2.
The drug spraying vehicle is characterized in that a boarding/alighting step 45 is provided on the left side of the traveling vehicle body 2, and the boom operation box 25 is provided on the frame 51R on the right side of the traveling vehicle body 2.
According to the invention of claim 2, left and right frames 51L and 51R supporting the frame 41 surrounding the front window transparent member 42 are erected from the step floor 2a of the traveling vehicle body 2, and the boom operation box 25 is mounted on the right frame 51R. The drug spraying vehicle according to claim 1, wherein the drug spraying vehicle is provided.
A first aspect of the invention relating to the present invention is the traveling vehicle body in which a spraying boom 20 is provided in front of the traveling vehicle body 2 and is surrounded by a front window transparent member 42, left and right covering members 100L, 100R, 101L, 101R and an upper covering member 108. In the chemical liquid spraying vehicle 1 provided with a driver's seat 3 on which a worker sits in the center of 2, a front window transparent member 42 is erected on the traveling vehicle body 2 in front of the driver's seat 3 with frames 41, 51L, 51R, A boom operating box 25 for operating the spray boom 20 is provided on the frames 41, 51L, 51R, and a boom lever 26 of the boom operating box 25 can be operated from the side of the driver's seat 3 and the traveling vehicle body 2. and like chemical spraying vehicle according to claim.

Second invention relating to the present invention, the present invention, wherein the traveling left passenger steps 45 of the vehicle body 2 is provided, provided with the boom operation box 25 to the frame 51R in the right of the vehicle body 2 such that the chemical spray vehicle of the first invention relating to.

A third invention related to the present invention is that right and left frames 51L and 51R that support the frame 41 surrounding the front window transparent member 42 are erected from the step floor 2a of the traveling vehicle body 2, and the boom is mounted on the right frame 51R. providing the operation box 25, and the like chemical spraying vehicle of the second invention relating to the present invention, wherein.

A fourth invention relating to the present invention, the first relating to the present invention which is characterized in that the vertically operating surface of the boom operation box 25 erected the boom lever 26 of the third one of The invention is a drug spraying vehicle or the like .

According to the first aspect of the invention, an operator operates the boom lever 26 of the boom operation box 25 to perform the operation of projecting the spreading boom 20 to the left and right and storing it in the side portion of the traveling vehicle body 2. Since the worker is attached to the frames 41, 51L, 51R at a position where the worker can reach while sitting on the driver's seat 3 or standing on the side of the traveling vehicle body 2, the spraying boom 20 is attached when the operator is sitting on the driver's seat 3 during the operation. It is possible to adjust the height and angle of the vehicle and to adjust the spraying boom 20 so as not to interfere with getting on and off the vehicle before getting outside the traveling vehicle body 2.
Further, in the invention of claim 1, the operator operates the boom lever 26 of the boom operation box 25 on the right side of the traveling vehicle body 2 to move the spraying boom 20 to make it easier to get on and off, and then the boarding step 45 on the left side is used to get on and off. Since the boom lever 26 of the boom operation box 25 is separated when moving up, it is safe because an operator does not accidentally touch it and move the spraying boom 20.
According to the invention of claim 2, in addition to the effect of claim 1, the boom operation box 25 can be firmly supported by the right frame 51R that supports the frame 41 to which the front window transparent member 42 is attached, and an error due to vibration of the traveling vehicle body 2 may occur. The spreading boom 20 does not move due to the operation.
In the first invention related to the present invention, an operator operates the boom lever 26 of the boom operation box 25 to perform the operation of projecting the spread boom 20 to the left and right and storing it in the side portion of the traveling vehicle body 2. Since the box 25 is attached to the frames 41, 51L, 51R at a position where the operator can reach the operator while sitting on the driver's seat 3 or standing on the side of the traveling vehicle body 2, the operator can control the operator while sitting on the operator's seat 3. At times, it is possible to adjust the height and angle of the spray boom 20, and further to adjust the spray boom 20 so as not to interfere with getting on and off before getting on the outside of the traveling vehicle body 2.

In the second invention relating to the present invention, in addition to the effect of the first invention relating to the present invention, right in the operator of the running body 2 by operating the boom lever 26 for boom operation box 25 spraying boom 20 The boom lever 26 of the boom operation box 25 is separated when getting on and off using the left-hand boarding step 45, so that the operator does not accidentally touch the spraying boom 20 and is safe. Is.

In the third invention relating to the present invention, in addition to the effect of the second invention relating to the present invention, a boom control box 25 in the right frame 51R for supporting the frame 41 for mounting the front window transparent member 42 is firmly supported As a result, the spray boom 20 does not move due to a malfunction caused by the vibration of the traveling vehicle body 2.

In a fourth invention relating to the present invention, in addition the first relating to the present invention to the effect of the third one of the invention, the operation of the boom operation box 25 from the operator standing on the side of the vehicle body 2 The surface is easy to see, and the spray boom 20 is not accidentally moved.

It is a right view of a chemical spray vehicle. It is a top view of a chemical spraying vehicle. It is a front view of a chemical spray vehicle. It is a block diagram which shows the structural example of the chemical|medical solution supply system which a chemical|medical solution spraying vehicle has. It is a left view of a right-and-left covering member. It is a right view of a right-and-left covering member. It is a left side view showing composition of a right-and-left covering member. It is a figure which shows opening and closing of the right-and-left covering member seen from a plane. It is a front view of a window. It is a rear view of a window. It is a right side view of a part of a chemical spray vehicle. It is a partial top view of a chemical spray vehicle.

Modes (embodiments) for carrying out the present invention will be described in detail with reference to the drawings.

In the following, the chemical liquid is a liquid such as a liquid in which a fertilizer, a pesticide or the like is dissolved in a solvent (for example, water), or a liquid (for example, water) containing a solid content such as a fertilizer or a pesticide.

[Embodiment]
FIG. 1 is a side view showing a configuration example of a chemical liquid spraying vehicle according to an embodiment. FIG. 2 is a plan view showing a configuration example of the chemical liquid spraying vehicle according to the embodiment. FIG. 3 is a front view showing a configuration example of the chemical liquid spraying vehicle according to the embodiment. FIG. 4 is a configuration diagram showing a configuration example of a chemical liquid supply system included in the chemical liquid spraying vehicle according to the embodiment.

The chemical liquid spraying vehicle 1 according to the present embodiment is a working vehicle in which a worker (operator) rides on the traveling vehicle body 2 and performs a driving operation to spray the chemical liquid on the field. As shown in FIGS. 1 and 2, the chemical liquid spraying vehicle 1 includes a traveling vehicle body 2, an engine 8, a chemical liquid tank 10, a spraying boom 20, a chemical liquid supply system 30, a window 40, and a shielding member 50L. 50R and a wiper mechanism 60 (see FIG. 3). In the present embodiment, the forward direction of the chemical spray vehicle 1 is a direction along the front-back direction of the traveling vehicle body 2, and is the direction from the driver's seat 3 to the steering wheel 4 when the chemical spray vehicle 1 is straight ahead. Further, the vehicle width direction of the traveling vehicle body 2 is a direction that is orthogonal to the traveling direction in the horizontal direction.

As shown in FIG. 1, the traveling vehicle body 2 includes a driver's seat 3, a steering handle 4, a main frame 5, a front wheel 6, and a rear wheel 7. The steering handle 4 is arranged to face the driver's seat 3 on which the operator sits. The steering handle 4 changes the traveling direction of the chemical liquid spraying vehicle 1 by steering the left and right front wheels 6 by a turning operation by an operator. The main frame 5 extends in front of and behind the traveling vehicle body 2.

The front wheels 6 are disposed in front of the traveling vehicle body 2 and are disposed on the left and right of the traveling vehicle body 2 in the vehicle width direction. The front wheels 6 are steered wheels that are steered by rotating the steering handle 4. The front wheels 6 are attached to the front axle 6a, and are rotationally driven by the power generated by the engine 8. The front axle 6a is attached to the main frame 5. The front axle 6a has a transmission device for rotating the front wheels 6 mounted in the front axle case.

The rear wheels 7 are arranged behind the traveling vehicle body 2 and on the left and right sides of the traveling vehicle body 2 in the vehicle width direction. The rear wheel 7 is mounted on the rear axle 7a and is rotationally driven by the power generated by the engine 8. The rear axle 7a is attached to the main frame 5. The rear axle 7a has a transmission device for driving the rear wheels 7 to be rotationally mounted in the rear axle case.

The engine 8 is, for example, a diesel engine or a gasoline engine. The engine 8 is attached to the main frame 5. The engine 8 is arranged in front of the main frame 5. The engine 8 is arranged in front of the front axle 6a in the present embodiment. The power of the engine 8 is transmitted to the front wheels 6 and the rear wheels 7 via the transmission 9. The transmission 9 is switched between an engaged state and a released state by depressing a clutch pedal CP arranged on the step floor 2a, and shifts by a shift operation of a main shift lever 71 and a sub shift lever 72. The power generation source including the engine 8 may be a hybrid type having a motor.

The chemical liquid tank 10 is a container for storing the chemical liquid sprayed from the spray boom 20. The chemical liquid tank 10 is attached to the main frame 5 via a chemical liquid tank attachment member 5a. The chemical liquid tank 10 is arranged on the rear axle 7a in the present embodiment.

The spraying boom 20 sprays the chemical liquid on the front side of the traveling vehicle body 2 in the spraying form. As shown in FIG. 2, the spray boom 20 includes a first spray boom 21 (side boom), a second spray boom 22 (side boom), and a third spray boom 23 (center boom).

The first spray boom 21 is arranged on the left side in the traveling direction of the chemical spray vehicle 1, and the second spray boom 22 is arranged on the right side in the traveling direction of the chemical spray vehicle 1. The third spray boom 23 is arranged on the front side in the traveling direction of the chemical spray vehicle 1, and is arranged between the first spray boom 21 and the second spray boom 22. The first spray boom 21 and the second spray boom 22 are expanded in the vehicle width direction of the chemical spray vehicle 1 by an operator operating a boom operation unit (not shown) provided near the right side of the steering handle 4. The spraying form or the storage form along the side surface of the chemical liquid spraying vehicle 1 can be selected and switched. The boom operation unit may have, for example, a lever, and may be a mechanical type that operates a wire connected to the first spray boom 21 and the second spray boom 22 with this lever, or has a switch. An electric type may be used in which the operation of an electric motor that drives the first spray boom 21 and the second spray boom 22 is controlled by turning the switch on and off.

By operating the boom lever 26 of the boom operation box 25, which will be described later, the first spray boom 21, the second spray boom 22, and the third spray boom 23 are moved up and down, and the first spray boom 21 and the second spray boom 22 are swung. And ups and downs can be done.

In the spraying form, the first spraying boom 21 and the second spraying boom 22 turn toward the traveling direction side of the chemical liquid spraying vehicle 1 to a position substantially parallel to the third spraying boom 23 (arrow R in FIG. 2). The direction) is fixed to the chemical spray vehicle 1 at this position. Then, the spray booms 21, 22, 23 are arranged on a substantially straight line. Further, the first spray boom 21 and the second spray boom 22 are housed along the traveling direction of the chemical spray vehicle 1 when the spray is not sprayed in the field, and the first boom receiver 81, 82 and the second boom receiver 83, Supported by 84. The first boom receivers 81, 82 extend in the vehicle width direction from the third spray boom 23 in front of the main frame 5. The second boom receivers 83, 84 extend in the vehicle width direction from the upper rear portion of the chemical liquid tank 10. Therefore, even if the first spray boom 21 and the second spray boom 22 are long, the balance between the first spray boom 21 and the second spray boom 22 can be maintained. The second boom receivers 83 and 84 are detachably attached to the upper rear portion of the chemical liquid tank 10. Therefore, even if the lengths (boom lengths) of the first spray boom 21 and the second spray boom 22 are different, it is possible to deal with them.

The first spray boom 21 has a plurality of nozzles 21a, the second spray boom 22 has a plurality of nozzles 22a, and the third spray boom 23 has a plurality of nozzles 23a (see FIG. 1). There is. Each of the plurality of nozzles 21a, 22a, 23a is, for example, a spray nozzle that sprays the chemical liquid in a mist state. Each of the plurality of nozzles 21a, 22a, 23a has an injection port for spraying the chemical solution facing the ground GL. The plurality of nozzles 21a, 22a, 23a are arranged in a substantially straight line because the spray booms 21, 22, 23 are arranged in a substantially straight line in the spraying mode. The directions of the ejection ports of the plurality of nozzles 21a, 22a, and 23a are not limited to those facing the ground GL, and can be changed as appropriate according to the application target of the chemical liquid.

The chemical liquid supply system 30 is a system for supplying a chemical liquid to the plurality of nozzles 21a, 22a, 23a. As shown in FIG. 4, the chemical liquid supply system 10 includes a water supply hose 31, a water discharge hose 32, a spray hose 33, an unload hose 34, a stirring hose 35, a spill hose 36, a branching device 37, The control pump P is included.

The water supply hose 31 is a pipe that guides the chemical liquid from the chemical liquid tank 10 to the control pump P. The water supply hose 31 has a water supply cock 31a and a filter 31b. The water supply cock 31a is arranged between the chemical liquid tank 10 and the filter 31b, and can stop the water supply from the chemical liquid tank 10 when the filter 31b is replaced or cleaned. The filter 31b is a suction filter that removes dust and the like from the chemical liquid in the chemical liquid tank 10 at the inlet side of the control pump P. The water discharge hose 32 is a pipe that guides the chemical liquid from the pest control pump P to the branching device 37. The spray hose 33 is a pipe that guides the chemical solution from the branching device 37 to the nozzles 21a, 22a, 23a of the spray booms 21, 22, 23. The unload hose 34 is a pipe for returning the chemical liquid into the chemical liquid tank 10 when the chemical liquid supplied from the water discharge hose 32 is not supplied to the spray hose 33. The unload hose 34 branches off from the switching cock 39 provided on the water discharge hose 32. The switching cock 39 can be switched between the spraying direction and the unloading direction.

The stirring hose 35 is a pipe for constantly flowing a predetermined amount of the chemical liquid into the chemical liquid tank 10 in order to stir the chemical liquid in the chemical liquid tank 10. The stirring hose 35 branches from the branching device 37 and is connected to the chemical liquid tank 10. The stirring hose 35 has a stirring nozzle 35a and a switching cock 35b. The stirring nozzle 35a is attached to the lower side surface of the chemical liquid tank 10, and agitates the chemical liquid in the chemical liquid tank 10 by injecting the chemical liquid into the chemical liquid tank 10. The switching cock 35b can be switched between the supply direction of water and the like from the outside and the stirring direction in the chemical liquid tank 10. The spill hose 36 is a pipe for returning the chemical liquid when the pressure is excessively increased and the chemical liquid that has not been used for spraying or stirring into the chemical liquid tank 10.

The branching device 37 branches the drug solution sent from the water discharge hose 32 to the spray hose 33. The branch device 37 is provided with a switching cock 37a, a safety valve 37b, a pressure gauge 37c, and a spray cock 38. The switching cock 37a switches between supplying and not supplying the chemical liquid to the stirring hose 35. The safety valve 37b returns the drug solution to the drug solution tank 10 and suppresses the pressure increase of the drug solution in the water discharge hose 32 when the pressure of the drug solution in the water discharge hose 32 excessively rises. The pressure gauge 37c displays the pressure of the chemical liquid sent to the spray hose 33.

The spray cock 38 includes a first spray cock 38a, a second spray cock 38b, and a third spray cock 38c. The first spray cock 38 a is provided on the first spray hose 33 a connected to the first spray boom 21, and is arranged between the nozzle 21 a and the branching device 37. The second spray cock 38b is provided on the second spray hose 33b connected to the second spray boom 22, and is arranged between the nozzle 22a and the branching device 37. The third spray cock 38c is provided on the third spray hose 33c connected to the third spray boom 23, and is arranged between the nozzle 23a and the branching device 37. The spray cocks 38a, 38b, 38c switch between supplying and not supplying the chemical liquid to the nozzles 21a, 22a, 23a. In the present embodiment, the branching device 37 is arranged on the right side of the driver's seat 3 in the traveling direction. Therefore, an operator seated in the driver's seat 3 can easily operate the cocks 38a, 38b, 38c, and can easily visually recognize the pressure gauge 37c.

The control pump P sucks the chemical solution that has passed through the filter 31b, pressurizes the chemical solution, and discharges the chemical solution toward the branch device 37. The control pump P is driven by an electric motor (not shown). Further, the control pump P can be switched by selectively operating or stopping the electric motor by the operator operating a switch of the control pump operating section arranged near the steering wheel 4.

As shown in FIG. 1, the front window 40 is arranged in front of the driver's seat 3 and in front of the steering handle 4. The window 40 is provided above the engine cover 8a. As shown in FIG. 3, the front window 40 includes a frame 41, a front window transparent member 42 (hereinafter referred to as front window glass), and a support shaft 43. The frame 41 has a rectangular shape with four corners removed, and has a width equal to the width of the step floor 2a in the vehicle width direction. The front window glass 42 is supported by the frame 41. The front window glass 42 is, for example, tempered glass or the like. The support shaft 43 strengthens the support structure of the window 40. The support shaft 43 extends from the upper part of the frame 41 toward the driver's seat 3, and then extends from the rear of the driver's seat 3 toward the lower side in the substantially vertical direction. That is, the support shaft 43 passes above the driver's seat 3 from the upper frame 41 and extends to the rear of the driver's seat 3. A lower end portion 43 a of the support shaft 43 extending to the rear of the driver's seat 3 is attached to the chemical liquid tank attachment portion 5 a of the main frame 5. That is, the lower end portion 43 a of the support shaft 43 is fixed to the chemical liquid tank mounting portion 5 a together with the chemical liquid tank 10. Therefore, the support structure of the chemical liquid tank 10 is strong.

As shown in FIG. 3, the shielding members 50L and 50R are arranged on both left and right side surfaces of the engine cover 8a when the traveling vehicle body 2 is viewed from the front. The shielding members 50L and 50R extend downward from the lower portions on the left and right sides of the window 40 and extend to the step floor 2a. The shielding members 50L and 50R are bent rearward from the step attachment portion of the step floor 2a.

That is, the shielding members 50L and 50R are formed so as to extend from the lower portions on the left and right sides of the window 40 to the step floor 2a along the left and right side surfaces of the engine cover 8a. As a result, the window 40 and the shielding members 50L and 50R are arranged so as to surround the engine cover 8a. That is, when the traveling vehicle body 2 is viewed from the front, both side surfaces of the engine cover 8a are blocked by the shielding members 50L and 50R, so that the chemical liquid is prevented from being scattered from the front side in the traveling direction of the traveling vehicle body 2 to the driving seat 3. You can Further, since the engine cover 8a and the shielding members 50L and 50R are arranged below the window 40, it is possible to prevent the chemical solution from splashing to the feet of the operator sitting on the driver's seat 3. Further, the shield members 50L and 50R are formed such that the width from the left shield member 50L to the right shield member 50R is narrower than the width of the step floor 2a in the vehicle width direction. That is, the left-right width of the window 40 is formed wider than the left-right width from the left shielding member 50L to the right shielding member 50R.

The shield members 50L and 50R include frames 51L and 51R and shield plates 52L and 52R. The frames 51L and 51R are joined to the lower portion of the frame 41 of the window 40 by welding or a fastening member such as a bolt, and are integrally formed with the frame 41. The frames 51L and 51R extend from the lower part of the frame 41 of the window 40 toward the step floor 2a. The frames 51L and 51R support the shield plates 52L and 52R. The shield plates 52L and 52R are formed along the outer shape of the engine cover 8a so that the center side in the vehicle width direction is smaller than the engine cover 8a. Therefore, when the chemical liquid is sprayed from the boom 50 to the front of the traveling vehicle body 2, it is possible to prevent the chemical liquid from splashing from the front of the traveling vehicle body 2 to the driving seat 3.

Further, the shielding plates 52L and 52R are transparent members in this embodiment. As the transparent member, for example, those having chemical resistance and weather resistance such as polyvinyl chloride resin and glass are preferable. As a result, the operator seated in the driver's seat 3 can visually recognize the front of the front wheel 6 (the direction indicated by the arrow EP in FIG. 2). That is, the operator can visually check the positional relationship between the crop CR in the field and the front wheels 6, and thus the chemical spraying vehicle 1 can be driven while maintaining an appropriate position with respect to the crop CR.

As shown in FIG. 10, the boom operation box 25 is attached to the upper part of the right frame 51R, and its wiring cable is clamped along the frame 41. The boom operation box 25 has an operation display surface on the front surface thereof which is vertically oriented rearward, and a boom lever 26 is provided upright. This boom lever 26 changes the tilt angle of the first spray boom 21 and the second spray boom 22 in the direction of tilting with the monolever, and the worker arrives while the operator is sitting on the driver's seat 3 or standing on the right side of the traveling vehicle body 2. It has a range.

In this embodiment, left and right covering members are provided on both left and right sides of the driver's seat 3.

The left and right covering members are provided with first left and right covering members 100L and 100R extending rearward from both left and right sides of the frame 41 of the window 40 and second left and right covering members 101L and 101R extending rearward from the frames 51L and 51R of the shielding members 50L and 50R. ing. That is, the first left and right covering members 100L and 100R protect the upper half of the operator sitting on the driver's seat 3 from the sprayed chemicals, and the second left and right covering members 101L and 101R protect the lower half of the operator from the sprayed chemicals. The second left and right covering members 101L and 101R are made of a flexible resin sheet and provided with a vertical slit in the lower portion, and an operator is allowed to climb when using a two-step boarding/alighting step 45 provided on the left side of the traveling vehicle body 2. Can insert his/her hand into the step floor 2a while holding the support stay 53L of the frame 51L. An insulator is wound around the support stay 53L to make it easy to hold, and it can be used as a foot rest for a worker sitting in the driver's seat 3. Further, the lower ends of the second left and right covering members 101L and 101R are bent inward along the traveling vehicle body 2 so as to be closed.

As shown in FIG. 11, scrapers 46 that approach the outer circumferences of the front wheels 6 and the rear wheels 7 are provided before and after the lower end of the boarding/alighting step 45 to scrape off the dirt adhering to the front wheels 6 and the rear wheels 7. As a result, the mud adhered to the outer circumferences of the front wheels 6 and the rear wheels 7 can be efficiently removed during traveling in the wetland.

Since the scraper 46 is made of metal (iron system), a gap is formed between the scraper 46 and the front wheels 6 and the rear wheels 7. However, a soft member such as rubber may be attached to the tip of the scraper 46 so as to contact the front wheel 6 and the rear wheel 7.

As shown in FIG. 12, in order to attach the scraper 46 to the boarding/alighting step 45, the step portion 45a of the boarding/alighting step 45 is arranged between the front wheels 6 and the rear wheels 7. Further, by forming the scraper 46 into a wide plate shape, the scraping performance of mud is improved. On the right side, the boarding/alighting step 45 and the scraper 46 are similarly provided.

The operator's entry/exit side, that is, the first left/right covering member 100L on the left side is connected to the left side of the frame of the window 40 via a hinge 102, and is configured to be openable/closable about the vertical axis. Further, as shown in FIG. 7, the left second left and right covering member 101L is connected to the frame 51L of the left shielding member 50L via a hinge 103, and is configured to be openable and closable around the vertical axis. Therefore, the operator can get on and off from the left side. Link bodies 104 and 105 and knob bolts 106 and 107 for adjusting the opening and closing positions are provided on the inner side surfaces of the first right and left covering members 100L and the second left and right covering members 101L on the getting in and out side. The operator opens the first left and right cover members 100L and the second left and right cover members 100R, gets on the driver's seat 3, closes the first left and right cover members 100L and the second left and right cover members 101L, and tightens the knob bolts 105 and 106. The positions of the first left and right cover members 100L and the second left and right cover members 101L are fixed by operation. When getting off from the driver's seat 3, the knob bolts 105 and 106 are loosened to open the first left/right cover member 100L and the second left/right cover member 101L.

By making the shielding members 50L and 50R in a front rising inclination posture and making the window 40 in a rear rising inclination posture, the visibility of the operator sitting on the driver's seat 3 is improved, and at the same time, the shielding member 50L and the window 40 on the passenger side are provided. It is possible to attach, open and close the first left and right cover members 100L and the second left and right cover members 101L in a posture suitable for the posture of the frame 41. The shield members 50L and 50R may have a vertical or substantially vertical posture.

Non-boarding side, that is, the right first left and right covering member 100R is fixed to the right side portion of the frame 41 of the window 40, and the right second left and right covering member 101R is fixed to the frame 51R of the right shielding member 50R. By opening to the front, it is possible to prevent the sprayed chemical liquid from flowing into the driving seat 3.

The front side of the chemical liquid tank 10 is configured to project to the left and right sides of the driver's seat 3. The second left and right covering members 101L and 101R are configured to extend to positions adjacent to the front ends of the chemical liquid tanks 10 projecting to the left and right sides. The first left and right covering members 100L and 100R are configured to extend beyond the second left and right covering members 101L and 101R to the rear position, so that the side of the driver's seat 3 can be covered.

An upper cover member 108 is provided rearward from the upper portion of the frame 41 of the window 40. Both left and right sides of the upper cover member 108 are formed to be bent downward, an insulator is fitted to the lower end edge, and the upper ends of the first left and right cover members 100L and 100R are overlapped to close the gap. The upper cover member 108 is configured to cover the upper side of the support shaft 43, and the upper surface thereof is lower than the upper end of the frame 41 so as not to be caught.

The front window 40 and the upper cover member 108 are fixed to the stay with a screw provided with a rubber washer.

The first left and right covering members 100L and 100R, the second left and right covering members 101L and 101R, and the upper covering member 108 are all transparent members made of resin, and have chemical resistance and weather resistance such as polyvinyl chloride resin and glass. It is formed of a thing and is attached to the hinges 102 and 103 of the frame 41 by push screws.

As described above, the first left and right covering members 100L and 100R, the second left and right covering members 101L and 101R, and the upper covering member 108 allow the operator to sit near the step floor 2a, that is, from the operator's foot portion to the head. It is possible to protect up to the upper position from the sprayed chemical liquid. Further, it does not hinder the visibility of the operator. Further, the opening/closing operation is easy and the cost can be reduced.

The width of the frame 41 and the width of the left and right frames 51L and 51R are different in the left and right covering members of the embodiment, so the upper left and right covering members 100L and 100R and the second left and right covering members 101L and 101R are separately configured. However, it may be formed as an integral left and right covering member and configured to be opened and closed by a hinge.

The wiper mechanism 60 can wipe the chemical liquid adhering to the outer surface of the front window glass 42, and can spray the window washer liquid onto the front window glass 42. As shown in FIGS. 2 and 3, the wiper mechanism 60 includes a wiper operation portion 61, a water tank 62, an injection nozzle 63, and a wiper blade 64. The wiper operation unit 61 is arranged on the right side in the vicinity of the steering handle 4 similarly to the boom operation unit and the control pump operation unit. That is, since the wiper operation unit 61 is arranged near the operator's hand, the wiper operation unit 61 can be operated without diverting the line of sight from the front. Further, the wiper operation unit 61 has, for example, a window washer switch for switching between injection and stop of the window washer liquid, and a wiper switch for switching between driving and stopping the wiper blade 64. The water tank 62 is a container for storing the window washer liquid sprayed on the front window glass 42. The water tank 62 is mounted on the step floor 2a and is arranged between the right shielding member 50R and the steering handle 4. The spray nozzle 63 is a nozzle for spraying the window washer liquid in the water tank 62 onto the front window glass 42. A window washer pump is provided between the injection nozzle 63 and the water tank 62. The wiper blade 64 has a wiper rubber integrally attached to a frame. The wiper blade 64 can be reciprocated by a wiper motor.

Here, the battery 90 supplies electric power to an electric motor that drives the pest control pump P, a window washer pump, a wiper motor, and the like. The battery 90 is arranged behind the boom mast B on the left side in the traveling direction. The battery 90 is mounted on the front axle 6a via a battery mounting member 91, for example. As a result, the battery 90 has improved accessibility as compared with the case where the battery 90 is stored under the step floor 2a, and thus the maintainability is improved and the configuration can be simplified. Further, since the battery 90 is arranged on the left side of the traveling body 2 in the traveling direction and the water tank 62 is arranged on the right side of the traveling body 2, the traveling body 2 is well balanced in the vehicle width direction.

The chemical liquid spraying vehicle 1 according to the present embodiment is configured as described above, and the basic operation thereof will be described below. When traveling the chemical spray vehicle 1, the operator operates the clutch pedal CP, the main speed change lever 72, and the sub speed change lever 73 to move at a speed according to the shift positions of the main speed change lever 72 and the sub speed change lever 73. .. By rotating the steering handle 4 to steer the front wheels 6, the chemical spray vehicle 1 advances in a desired direction.

Further, when spraying the chemical liquid, the operator operates the boom operation part to make the first spray boom 21 and the second spray boom 22 spread in the vehicle width direction of the traveling vehicle body 2, and the switch of the control pump operation part. By turning on, the chemical liquid is sprayed from the nozzles 21a, 22a, 23a of the spray booms 21, 22, 23. At this time, the window 40 and the shielding members 50L and 50R are arranged in front of the driver's seat 3, and the first left and right cover members 100L and 100R and the second left and right cover members 101L and 101R are arranged on both left and right sides of the driver seat 3. Further, since the upper cover member 108 is provided on the upper portion, it is possible to prevent the chemical liquid sprayed from the spray booms 21, 22, 23 from being scattered to the driver's seat 3.

Further, when removing the chemical liquid or the like adhering to the window 40, the operator operates the window washer switch of the wiper operation unit 61 to eject the window washer liquid from the injection nozzle 63 toward the front window glass 42 and operate the wiper switch. By reciprocating the wiper blade 64, the chemical solution or the like on the front window glass 42 is wiped off together with the window washer solution.

When the spraying of the chemical solution is temporarily stopped, the operator switches the spray cock 38 provided in the branching device 37 from the open state to the closed state, so that the chemical solution sent from the control pump P to the water discharge hose 32 is sprayed. Instead of being sent to the hose 33, it is returned to the inside of the chemical liquid tank 10 via the unload hose 34, and the spraying of the chemical liquid is temporarily stopped. By switching the spray cock 38 to the open state, the chemical solution sent from the pest control pump P to the water discharge hose 32 is sent to the spray hose 33, so that the spray of the chemical solution can be restarted.

Further, when the spraying of the chemical liquid is ended, the operator switches the spray cock 38 from the open state to the closed state, whereby the spraying of the chemical liquid from the spray booms 21, 22, 23 is stopped. Next, the operator turns off the control pump control section to stop the control pump P. Next, when the operator operates the boom operation unit, the first spray boom 21 and the second spray boom 22 in the spray form are moved toward the main frame 5 in the direction opposite to the traveling direction of the chemical spray vehicle 1. It swivels to a substantially parallel position (opposite to the direction shown by the arrow R in FIG. 2), is supported by each boom receiver 81 to 84 at this position, is fixed to the drug spraying vehicle 1, and spraying of the drug is completed. It

1 chemical spray vehicle 2 traveling vehicle 2a step floor 3 driver's seat 20 spray boom 25 boom operation box 26 boom lever 41, 51L, 51R frame 42 front window transparent member (front window glass)
45 boarding/alighting steps 100L, 100R, 101L, 101R left and right covering member 108 upper covering member

Claims (2)

A traveling boom (20) is provided in front of the traveling vehicle body (2) and is surrounded by a front window transparent member (42), left and right covering members (100L, 100R, 101L, 101R) and an upper covering member (108) ( In a chemical spray vehicle (1) having a driver's seat (3) on which a worker sits in the center of (2), a front window transparent member (42) is provided in front of the driver's seat (3) by a frame (41, 51L, 51R). ) Is erected on the traveling vehicle body (2), and a boom operation box (25) for operating the spray boom (20) is provided on the frame (41, 51L, 51R), and a boom of the boom operation box (25) is provided. The lever (26) is operable from the side of the driver seat (3) and the traveling vehicle body (2),
Wherein the traveling left passenger steps of the vehicle body (2) (45) is provided, right in the boom operation box (25) Drugs agent diffusing characterized in that a said frame (51R) of the vehicle body (2) vehicle. Left and right frames (51L, 51R) supporting the frame (41) surrounding the front window transparent member (42) are erected from the step floor (2a) of the traveling vehicle body (2), and the right frame (51R) is provided with the left and right frames (51L, 51R). The chemical spray vehicle according to claim 1 , further comprising a boom operation box (25).

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