JP2018033348A - Medicine scattering vehicle - Google Patents

Abstract

The present invention provides a medicine spraying vehicle having a configuration capable of preventing interference with other members when the door is opened without hindering the opening and closing of the door of a cabin for getting on and off. A cabin 20 serving as an operator cockpit provided with an opening / closing door 25 for getting on and off, a chemical solution spraying posture extending in the left-right direction, and a storing posture extending laterally of the opening / closing door 25 in the front-rear direction. A medicine spray vehicle provided with a control boom 40 for spraying a medicine and a guide body 32 for guiding the opening and closing door 25 in the front-rear direction and opening the door 20 toward the front side. A stopper 50 for preventing overstroke is provided on the door frame 34 on the inner side of 25. By moving the door 25 in the front-rear direction, even when the door 25 is opened, it does not interfere with the control boom 40, and even if momentum is applied when the door 25 is opened, the stopper 50 prevents overstroke. The interference of the opening / closing door 25 with the side surface of the cabin 20 can be prevented. [Selection] Figure 7

Description

  The present invention relates to a medicine spraying vehicle including a medicine tank and a control boom for spraying a medicine that sprays a medicine supplied from the medicine tank to a field.

  As shown in the following Patent Document 1, in a chemical solution spraying vehicle for spraying a chemical solution supplied from a chemical tank to a field, a chemical solution tank that stores a cabin and a chemical solution on which an operator gets on and performs operations for the chemical solution spraying operation, etc. And a boom for spraying chemicals on the field.

  The control boom is located on the center boom on the front of the aircraft and on both sides of the center boom. The chemical boom is spread on both sides of the center boom when spraying chemicals, and has side booms that are folded and held in both sides of the aircraft when spraying chemicals. There are many cases.

JP 2014-76789 A

  In the chemical solution spray vehicle shown in Patent Document 1, the cabin door is configured to open laterally about the vertical axis, so that it easily interferes with the side booms on both sides of the fuselage and has a narrow entrance. And it has been necessary for the operator to take care not to open and close the door when getting on and off the cabin. Further, if the door interferes with other members when the door is opened, the impact may damage each other.

  The subject of this invention is providing the chemical | medical agent dispersion | distribution vehicle of the structure which can prevent interference with the other member when opening and closing the door of the cabin for boarding / exiting, and preventing trouble.

The above-described problems of the present invention are solved by the following solution means.
According to the first aspect of the present invention, a cabin (20) serving as an operator cockpit provided with an opening / closing door (25), a chemical spraying posture extending in the left-right direction, and a side of the opening / closing door (25) in the front-rear direction. Provided in a control boom (40) for spraying a medicine having a configuration that can be switched to a storage posture that extends to the front and a cabin frame (21) that constitutes the cabin (20), and guides the open / close door (25) in the front-rear direction. And a guide body (32) for guiding the opening operation toward the front side from the cabin (20), and a support frame (31, 34, 44) of the open / close door (25) provided inside the open / close door (25). And a stopper (50) for preventing an overstroke that contacts the side surface of the cabin (20) when the opening / closing door (25) is opened, provided on the support frame (31, 34, 44). Drug It is a cloth vehicle.

  According to a second aspect of the present invention, a glass plate (38) is provided on the front side of the open / close door (25) on the side of the cabin (20), and the open / close door (25) of the support frames (31, 34, 44) is opened. The drug-dispersing vehicle according to claim 1, wherein a shock-absorbing material (54) is provided at a position adjacent to the glass plate (38).

  According to a third aspect of the present invention, there is provided a protrusion (29) provided on an upper portion of the support frame (31, 34, 44) and protruding inside the support frame (31, 34, 44), and a side surface of the cabin (20). And a receiving portion (26) that receives the protruding portion (50a) when the open / close door (25) is opened, and holds the open / close door (25) in an open state. The stopper (50) is provided above the support frame (31, 34, 44), and the cushioning material (54) is provided below the support frame (31, 34, 44). The drug spraying vehicle according to claim 2.

  According to the first aspect of the present invention, when the opening / closing door (25) is opened, the opening / closing door (25) does not interfere with the control boom (40) by the guide body (32) that guides the opening / closing door (25) in the front-rear direction. Can be moved in the front-rear direction. Further, even if momentum is applied when the opening / closing door (25) is opened, the overstroke is prevented by the stopper (50) provided on the support frame (31, 34, 44), and the cabin (20) of the opening / closing door (25) is prevented. Since interference with the side surface can be prevented, both the door (25) and the cabin (20) are not damaged.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, when the open / close door (25) is opened, the support frame (in the vicinity of the glass plate (38) on the side surface of the cabin (20)) ( By providing the cushioning material (54) on the 31, 34, 44), the impact at the time of opening the opening / closing door (25) is alleviated, so that interference between the opening / closing door (25) and the glass plate (38) can be prevented. .

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, the upper part of the support frame (31, 34, 44) having the lock mechanism (26, 29) is susceptible to an impact at the time of opening. However, the impact is alleviated by providing the stopper (50) at this portion. On the other hand, since the lower part of the support frame (31, 34, 44) without the lock mechanism (26, 29) is sufficient with the cushioning material (54), impact can be prevented with a simple configuration. Accordingly, it is possible to appropriately prevent the opening / closing door (25) from coming into contact with the cabin (20).

It is a side view showing the example of composition of the medicine distribution vehicle concerning the embodiment of the present invention. FIG. 2 is a plan view (partially omitted) of the medicine spraying vehicle shown in FIG. 1. It is a perspective view of the medicine tank of a medicine dispersion vehicle. It is a figure explaining a mode that a medicine is sprayed on a field with a control boom of a medicine spraying vehicle. It is the perspective view (state which closed the door) of the cabin which looked at the medicine distribution vehicle from diagonally left upper. It is the perspective view (state which opened the door on the left side) of the cabin which looked at the medicine distribution vehicle from the upper left diagonal. It is the perspective view (state which opened the door on the left side) of the cabin which looked at the medicine distribution vehicle from diagonally left back. It is a perspective view of the upper part vicinity of the door of the state which opened the left door of the chemical | medical agent dispersion | distribution vehicle. It is a partial top view of the cabin in the state where the left door of the medicine spraying vehicle is closed. It is a partial top view of the cabin in a state where the left door of the medicine spraying vehicle is opened about half. It is a partial top view of a cabin with the door on the left side of the medicine spraying vehicle opened. It is a perspective view of the guide plate vicinity of the door of the state which opened the left door of the chemical | medical agent dispersion | distribution vehicle. It is the perspective view of the guide plate vicinity of the door seen from the left diagonal upper direction of the state which opened the left door of the chemical | medical agent dispersion | distribution vehicle. It is the perspective view (state which closed the door) of the cabin which looked at the medicine distribution vehicle from diagonally right above. It is the perspective view (state which opened the door on the left side) of the cabin which looked at the medicine distribution vehicle from diagonally right above. It is the perspective view which showed the inner side of the door of the left side of a cabin. It is a block diagram of the glass attachment part of the opening / closing door attached to the door frame on the left side. 18A is a side view of the door frame of the left door of the cabin, and FIG. 18B is a view as seen from the direction of arrow A in FIG. It is the perspective view of the state which looked at the cabin of the medicine distribution vehicle from the right rear. It is the perspective view which looked at the capacitor | condenser of the chemical | medical agent dispersion | distribution vehicle from the cabin side. Fig. 21 (A) is a perspective view of the cabin of the medicine spraying vehicle as viewed from the left front, and Fig. 21 (B) is a partially enlarged view of Fig. 21 (A). FIG. 22 (A) is a perspective view showing another example of steps for getting on and off the medicine spraying vehicle, and FIG. 22 (B) is a perspective view of a step attachment portion of FIG. 22 (A). It is the perspective view which showed another example of the step for boarding / alighting of a chemical | medical agent dispersion | distribution vehicle. It is the partial perspective view which showed another example of the step for boarding / alighting of a chemical | medical agent spray vehicle.

  DESCRIPTION OF EMBODIMENTS Embodiments (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. The constituent elements described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the structures described below can be combined as appropriate. In addition, various omissions, substitutions, or changes in the configuration can be made without departing from the scope of the present invention.

  The medicine spraying vehicle 1 according to the present embodiment is a work vehicle in which an operator such as an operator gets on the traveling vehicle body 2 and sprays medicine on a farm field while performing a driving operation. As shown in FIGS. 1 and 2, the medicine spraying vehicle 1 includes a traveling vehicle body 2, a cabin 20, a medicine tank 30, and a control boom 40 for spraying medicine supplied from the medicine tank 30 to a field. Has been. In the present embodiment, the traveling direction of the medicine spraying vehicle 1 is a direction along the front-rear direction of the traveling vehicle body 2 and is a direction from the seat 4 toward the steering handle 5 when the medicine spraying vehicle 1 goes straight. Further, the vehicle width direction or the left-right direction of the traveling vehicle body 2 is a direction that is horizontally orthogonal to the traveling direction. The vertical direction of the traveling vehicle body 2 is a direction perpendicular to the traveling direction.

  The traveling vehicle body 2 includes a main frame 3, a seat 4, a steering handle 5, front wheels 6, and rear wheels 7. The main frame 3 is formed to extend before and after the traveling vehicle body 2. The seat 4 is a seat for the operator to sit when operating the medicine spraying vehicle 1. At an appropriate position around the seat 4, an operation unit (not shown) for controlling operations such as opening / closing of the control boom 40 and spraying of the medicine is disposed. The steering handle 5 changes the traveling direction of the medicine spraying vehicle 1 by steering at least the left and right front wheels 6 by a turning operation by an operator. The front wheel 6 is a steering wheel that is steered by at least a turning operation of the steering handle 5.

  The cabin 20 includes the seat 4 and the steering handle 5 so as to form a passenger compartment. The cabin 20 is disposed between the medicine tank 30 and the control boom 40.

  As shown in the perspective view of FIG. 3, the medicine tank 30 is formed in a concave shape so as to surround the left and right sides and the rear side of the seat 4, and is a container that accommodates the medicine sprayed from the control boom 40. As shown in FIG. 1, the medicine tank 30 is detachably mounted on the main frame 3 on the rear side of the cabin 20. The drug is a liquid such as a liquid obtained by dissolving a fertilizer, an agricultural chemical or the like in a solvent (for example, water) and a liquid (eg, water) containing a solid content such as a fertilizer or an agricultural chemical.

  As shown in FIG. 4, the control boom 40 sprays the medicine on the front side of the medicine spraying vehicle 1, as shown in FIG. 4. The control boom 40 is provided on the front side of the traveling vehicle body 2. The control boom 40 includes a center boom 40a and side booms 40b on both sides. The center boom 40 a is disposed on the front side of the medicine spraying vehicle 1 and extends horizontally in the vehicle width direction of the traveling vehicle body 2. In the center boom 40a, a plurality of nozzles 41a for injecting medicine in a mist form are arranged at intervals.

  A lift link 13 supported on both left and right side portions of the bonnet 12 is attached to the front portion of the traveling vehicle body 2. The lift link 13 has an upper link 13a and a lower link 13b arranged in parallel, the front end portions are connected by a hitch bracket 14, and the rear end portions are axially supported by upright columns 15 to form a parallel link configuration. Then, the tip of the parallel link is moved up and down by the lift cylinder 17 so that the height of the chemical solution sprayed on the control boom 40 can be adjusted.

  The side boom 40b is attached to the left and right sides of the center boom 40a so as to be switchable between a spraying posture extending in the vehicle width direction of the traveling vehicle body 2 and a storage posture along the left and right sides of the traveling vehicle body 2. The side boom 40b is supported by boom receivers 80 disposed on the left and right sides of the rear side of the traveling vehicle body 2 in the storage posture. In the side boom 40b, a plurality of nozzles 41b for spraying the medicine in a mist form are arranged at intervals. The drug spraying vehicle 1 is a slide boom in which the side boom 40b extends and contracts, and is a vehicle that can extend the length of the side boom 40b and perform a wide range of drug spraying during operation. The illustration of the nozzle 41b and the slide mechanism of the boom 40b is omitted.

  A center boom 40a extending in the left-right direction of the machine body is attached to the lower end portion of the hitch bracket 14. Also, cylinder mounting columns 16 projecting upward are provided at the left and right ends, and a solenoid valve with a hydraulic tank (incorporated in the upper and lower cylinders 19) is electrically controlled at the upper end of the cylinder mounting column 16. An upper end of an upper and lower cylinder 19 that is a rolling cylinder that expands and contracts via is attached, and a side boom 40 b is rotatably attached to the lower end of the upper and lower cylinder 19. Accordingly, the side boom 40 b is raised and lowered by the expansion and contraction of the upper and lower cylinders 19.

  The side boom 40b is attached to the center boom 40a via the cylinder attachment column 16, but the side boom 40b is opened and closed by the open / close cylinder 18 provided on the center boom 40a.

The cabin 20 includes a cabin frame 21 (21a, 21b, 21c, etc.) and a cabin roof 22, and a base portion is supported by the main frame 3.
As shown in FIGS. 5 to 8, the cabin frame 21 includes left and right front frames 21 a and 21 a erected from the main frame 3 and left and right rear frames 21 e and 21 e erected from the main frame 3. Between the left and right front frames 21a and 21a and the left and right rear frames 21e and 21e, left and right intermediate frames 21d and 21d standing from the main frame 3 are provided.

  Then, an upper left frame 21cL that connects the upper parts of the left front frame 21a, the left intermediate frame 21d, and the left rear frame 21e, and an upper right frame 21cR that connects the upper parts of the right front frame 21a, the right intermediate frame 21d, and the right rear frame 21e. Each is provided with a rearward extension. In the present specification and drawings, among the pair of left and right components, L attached to the reference numeral indicates the left member, and R indicates the right member.

  In the middle of the left rear frame 21e, a left auxiliary frame 21ba directed upward and rearward is attached, and a left rear auxiliary frame 21b that connects the rear end of the left auxiliary frame 21ba and the rear end of the left upper frame 21cL is provided.

  In addition, a right auxiliary frame 21ba that extends rearward and upward is attached in the middle of the right rear frame 21e, and a right rear auxiliary frame 21b that connects the rear end of the right auxiliary frame 21ba and the rear end of the upper right frame 21cR is provided. Yes.

  A front upper frame 21cF connecting the upper parts of the left front frame 21a and the right front frame 21a, a rear upper frame 21cB connecting the upper part of the left rear auxiliary frame 21b and the right rear auxiliary frame 21b, and a left upper frame 21cL, an upper right frame are provided. A cabin roof 22 made of a resin material is attached to the upper portions of 21cR, the front upper frame 21cF, and the rear upper frame 21cB.

  The left opening / closing door 25L is positioned at a portion surrounded by the left intermediate frame 21d, the left rear frame 21e, and the left upper frame 21cL. Further, the right opening / closing door 25R is positioned at a portion surrounded by the right intermediate frame 21d, the right rear frame 21e, and the upper right frame 21cR.

  Specifically, a transparent glass plate 25b (a portion surrounded by the left intermediate frame 21d, the left rear frame 21e and the upper left frame 21cL and a portion surrounded by the right intermediate frame 21d, the right rear frame 21e and the upper right frame 21cR, respectively) 18) is attached to form an opening / closing door 25.

  Further, a front glass plate 38 is attached to a portion surrounded by the left front left frame 21a, the left upper frame 21cL, and the left middle frame 21d, and is surrounded by the right front frame 21a, the right upper frame 21cR, and the right middle frame 21d. A front glass plate 38 is also attached to the part. Then, a rear glass plate 39 is attached to a portion surrounded by the left left rear frame 21e, the left upper frame 21cL, the left rear auxiliary frame 21b, and the left auxiliary frame 21ba. On the other hand, a capacitor 48 (FIG. 19) is attached to a portion surrounded by the right rear frame 21e on the right side, the upper right frame 21cR, the right rear auxiliary frame 21b, and the right auxiliary frame 21ba, and a transparent glass plate is disposed below the capacitor 48. To do.

  The middle part of the left front frame 21a and the middle part of the right front frame 21a are connected by the middle front frame 21aC. A front upper glass plate is disposed in a portion surrounded by the left and right front frames 21a, 21a, the intermediate front frame 21aC, and the front upper frame 21cF. Further, a front lower glass plate is disposed in a portion surrounded by the left and right front frames 21a and 21a, the intermediate front frame 21aC, and the main frame 3.

  The lower part of the left rear auxiliary frame 21b and the lower part of the right rear auxiliary frame 21b are connected by a rear intermediate frame 21bC. A rear glass plate 57 (FIG. 19) is disposed in a portion surrounded by the left and right rear auxiliary frames 21b and 21b, the rear intermediate frame 21bC, and the rear upper frame 21cB.

The left and right auxiliary frames 21ba are formed along the shape above the medicine tank 30.
Opening doors 25 fitted with glass plates 25 b (FIG. 18) are provided on both side surfaces of the cabin 20. A front glass plate 38 is provided on the front side of the open / close door 25, and a rear glass plate 39 is provided on the rear side of the open / close door 25.

  9 to 11 are partial top views of the cabin 20 when the left opening / closing door 25L is changed from a closed state to an open state, respectively. That is, FIG. 9 shows a state where the left door 25L is closed, and FIG. 11 shows a state where the left door 25L is opened. 12 and 13 are perspective views of the vicinity of the guide plate of the left open / close door 25L. Since the right door 25R has a symmetrical configuration with the left door 25L, its description and illustration are omitted.

  A guide plate 32 having a curved guide groove 32a of the opening / closing door 25 is attached to the front portion of the upper left frame 21cL via a support arm 36, and the opening / closing door 25 is inserted into the guide groove 32a of the guide plate 32. Since the pin 25a supported and fixed to the upper end of the door is always fitted, when the door 25 moves to the open side, the door 25 moves forward along the curved guide groove 32a of the guide plate 32 to the maximum. Is opened to the position shown in FIGS.

  A left door frame 34L is provided inside the left open / close door 25L, and a striker (projecting portion) 29 made of a round bar is fixedly attached (welded) to the left door frame 34L. Therefore, when the left open / close door 25L is opened, the striker 29 also moves together. The striker 29 passes through the outside of the left front frame 21a and enters the holder (receiving portion) 26 composed of a leaf spring. Thereby, the left open / close door 25L is locked and held in an open state. The holder 26 and the striker 29 constitute a lock mechanism for the open / close door 25.

  The forward projecting arm 27 is fixed to the front frame 21a by welding. A holder 26 is attached to the front projecting arm 27 with a screw, and a front end portion of a guide plate 32 is fixed to the tip of the front projecting arm 27. The rear end portion of the guide plate 32 is fixed to the upper left frame 21cL.

  The door 25 is in the state shown in FIG. 10 between the closed state shown in FIG. 9 and the open state shown in FIG. 11. In this state, the left door 25L moves in parallel from the state shown in FIG. It is in the state. That is, the left open / close door 25L translates forward while moving toward the outside of the cabin 20. Thereafter, as shown in FIG. 11, the front side of the left opening / closing door 25 </ b> L moves forward while rotating so that it approaches the main body side of the cabin 20. When the handle 47 (FIG. 16) is turned to open the opening / closing door 25, the damper 46 pushes the opening / closing door 25 in the opening direction. This pushing action is up to the position shown in FIG. Open to the position. When closing the left open / close door 25L, the operator closes it to the position shown in FIG.

14 and 15 are perspective views of the cabin as seen from the upper right side of the medicine spraying vehicle, and FIG. 16 is a perspective view showing the inside of the left open / close door 25L.
L-shaped door frames 34L and 34R are attached at a plurality of portions which are important points of the open / close doors 25L and 25R. Hereinafter, the left door frame 34L will be described.

  The left door frame 34L is attached to the glass plate 25b of the left open / close door 25L. FIG. 17 shows a configuration diagram of a glass mounting portion (portions indicated by arrows P, Q, G, T, and J in FIG. 18).

  An iron-based member 67 having a female screw 68 is welded to the door frame 34. Since the glass plate 25b is provided with holes, rubber 69, 69 is laid on both sides of the hole, and an iron-based member 67 having a female screw is applied to the outside and fixed with screws 66.

  The left opening / closing door 25 </ b> L and the main body side of the cabin 20 are connected by an upper opening / closing arm 31 and a lower opening / closing arm 31. The upper opening / closing arm 31 and the lower opening / closing arm 31 are connected by a connecting frame 44. By providing the connection frame 44, the strength of the frame structure is increased, and the opening / closing door 25 can be opened and closed more stably. The door frame 34, the opening / closing arm 31, the connecting frame 44, etc. constitute a support frame for the opening / closing door 25.

  The left door frame 34L has an L shape, and is mainly composed of an upper left door frame 34La on the upper side and a rear left door frame 34Lb on the rear side, and a central left door frame at the center of the rear left door frame 34Lb. The lower left door frame 34Ld is welded to the lower part of the rear left door frame 34Lb.

  An upper first fulcrum 34a is provided in the upper left door frame 34La, an upper second fulcrum 34b is provided in the upper part of the left intermediate frame 21d, and the upper first fulcrum 34a and the upper second fulcrum 34b are connected to the upper open / close arm. Connect at 31.

  The lower opening / closing arm 31 has the same shape as the upper opening / closing arm 31. A lower first fulcrum 34c is provided at the connecting portion between the lower left door frame 34Ld and the opening / closing arm 31, and a lower second fulcrum 34d is provided below the intermediate frame 21d. Both ends of the lower opening / closing arm 31 are connected by the first fulcrum 34c and the second fulcrum 34d.

  The upper opening / closing arm 31, the upper first fulcrum 34a, the upper second fulcrum 34b, the lower opening / closing arm 31, the lower first fulcrum 34c, and the lower second fulcrum 34d are at the same position in plan view. Yes.

  The pair of upper and lower open / close arms 31 and 31 are bent in a U shape, and when the left open / close door 25L is opened as shown in FIG. 15, the upper and lower open / close arms 31 and 31 are left intermediate frames. The second fulcrum 34b, 34d rotates around the axis so as to bypass the outer side of 21d.

  As shown in FIG. 16, the striker 29 provided on the upper left door frame 34La, the upper opening / closing arm 31 and the upper first fulcrum 34a are provided with a gap in the vertical direction, so that the striker 29 and the upper opening / closing arm 31 There is no risk of fingers being caught between them.

  Further, while the left open / close door 25L in the closed state shown in FIG. 9 moves to the open state shown in FIG. 11, the left open / close door 25L moves so as not to interfere with surrounding members. Therefore, the operator in the cabin 20 can easily get out of the medicine spraying vehicle 1. That is, the left open / close door 25L opens and closes within the space of the left side boom 40b and the cabin 20 main body. In addition, the opening / closing door 25 is configured so that the front end of the opening / closing door 25 does not hit the boom post 45 (see FIG. 2), which is the base when the control boom 40 is lifted up and down, with the opening / closing door 25 being most open.

Further, as shown in FIG. 9 and the like, the curved guide groove 32a of the guide plate 32 has a configuration in which the rear side width W2 is gradually wider than the front side width W1.
When closing the open / close door 25, the open / close door 25 is operated from the front side to the rear side. At that time, the guide groove 32a is curved, so that the pin 25a at the upper end of the open / close door 25 is easily caught by the guide groove 32a. However, since the rear width of the guide groove 32a is increased (for example, about 3 mm), the opening / closing door 25 can be operated rearward smoothly. Moreover, when opening the opening / closing door 25, the operability of the opening / closing door 25 is improved by being easily pulled forward.

  The upper left door frame 34La is provided with a stopper 50 that prevents interference with the cabin 20 and overstroke when the left opening / closing door 25L is opened. The above-described locking mechanism locks the left opening / closing door 25L in an opened state, and prevents the left opening / closing door 25L from moving naturally due to the inclination of the fuselage.

  The stopper 50 includes a lock nut 50a fixed to the upper left door frame 34La and a cylindrical elastic body (rubber, spring, etc.) 50b fixed to the tip of the lock nut 50a. The left opening door 25L shown in FIG. In the state, the elastic body 50b at the tip of the lock nut 50a is disposed so as to contact the left front frame 21a. When the door 25 is opened when the door 25 is opened, the tip of the stopper 50 comes into contact with the front frame 21a, but the impact is alleviated by the action of the elastic body 50b.

  The lock nut 50a is not limited to bolts or screws. That is, it is sufficient that the elastic body is attached to a member in which a female thread is cut in a cylindrical system. The protrusion height can be adjusted by using the lock nut 50a.

  By providing the stopper 50 inside the open / close door 25, the overstroke of the open / close door 25 can be prevented, and interference with the side surface of the cabin 20 can be prevented, so that the open / close door 25 can be prevented from being damaged.

  Then, as shown in FIG. 7 and the like, a cushioning material 54 is wound around a portion of the lower opening / closing arm 31 that is close to the front glass plate 38 when the door is opened. Since the lock mechanism and the stopper 50 are provided inside the upper part of the open / close door 25, when the operation is restricted by the lock mechanism or the stopper 50, the lower part of the open / close door 25 is also subjected to the reaction and easily rattles. Therefore, it is conceivable that the lower opening / closing arm 31 interferes with the front glass plate 38 with this momentum.

  However, since the shock absorbing material 54 is provided to reduce the impact when the door 25 is opened, interference between the door 25 and the front glass plate 38 of the cabin 20 can be prevented. Examples of the buffer material 54 include various materials such as a packing material such as a tape and a foam, a sponge, and a cushion material.

  As described above, the upper left door frame 34La on the upper side of the left door frame 34L is provided with the stopper 50, and the lower opening / closing arm 31 is provided with the buffer material 54. The upper left door frame 34La with the locking mechanism is easily subjected to an impact when opened, but the impact is mitigated by providing a stopper 50 at this portion. On the other hand, in the vicinity of the lower left door frame 34Ld on the lower side without the locking mechanism, it is sufficient to mount the cushioning material 54 on the opening / closing arm 31, so that it is possible to prevent an impact at the time of opening with a simple configuration. Accordingly, it is possible to appropriately prevent the left opening / closing door 25L from coming into contact with the front glass plate 38 of the cabin 20.

FIG. 18A shows a side view of the door frame of the left door of the cabin, and FIG. 18B shows a view seen from the direction of arrow A in FIG.
The glass plate 25b of the left open / close door 25L is mounted mainly at three locations: an upper left door frame 34La, a rear left door frame 34Lb, and a central left door frame 34Lc. The left door frame 34L has an arcuate shape as shown in FIG. 18 (B), and is in close contact with the glass plate 25b at the above-mentioned three attachment points of the upper part, the central part, and the lower part, between the upper part and the central part, and between the central part and the lower part. There is a gap S between them.

  When the left door frame 34L has a straight shape in the vertical direction as in the case of the glass plate 25b, that is, when there is no gap S, the adhesion deteriorates due to dimensional tolerances. Therefore, the left door frame 34L is bowed up and down, and the clearance S is provided, so that the left opening door 25L is closed by pulling it toward the fuselage side by turning the handle 47 at the center portion, thereby causing the aforementioned deformation. The gap S disappears. Therefore, when the left opening / closing door 25L is closed, the adhesion of the left opening / closing door 25L to the machine body side, that is, the sealing performance, is improved.

FIG. 19 shows a perspective view of the medicine spraying vehicle as seen from the right rear side, and FIG. 20 shows a perspective view of the medicine spraying vehicle as seen from the cabin side.
As shown in FIG. 19, a condenser 48 for air conditioning of the cabin 20 is disposed on the upper right rear side of the cabin 20. A guard 49 is provided on the side surface of the capacitor 48 to prevent the control boom 40 from interfering, and a capacitor cover 60 is provided around the capacitor 48.

  A net 59 is provided on the upstream surface of the condenser 48 in the flow direction of the cooling air, and a long hole 60a for fixing the net 59 and a notch 60b for fixing the net bolt 50 are provided on the front surface of the capacitor cover 60. Further, by attaching the net 59 to the net rails 61 and 61 provided above and below the capacitor 48, the net 59 can be easily attached and detached in the longitudinal direction of the machine body. The net rails 61 and 61 are attached to the upper and lower surfaces of the capacitor cover 60, and the net 59 is attached between the rails 61 and 61.

  The condenser 48 is provided at the rear part of the cabin frame 21 to cool the refrigerant, and the liquefied refrigerant is sent to the receiver dryer 55. The receiver dryer 55 is a refrigerant amount adjusting tank that temporarily stores the refrigerant liquefied by the condenser 48. The receiver dryer 55 also has a function of absorbing moisture and removing impurities with a desiccant or a strainer. The liquefied refrigerant is sent to a compressor (not shown) through the pipe 50.

  A transparent window 55 a is provided on the upper part of the receiver dryer 55. The transparent window 55a is for confirming the refrigerant amount. In the present embodiment, the transparent window 55a can be monitored by the rearview mirror 35 disposed at the upper rear portion on the right outside of the cabin 20. The rearview mirror 35 is fixedly supported by a rear upper frame 21cB (FIGS. 5 and 6) disposed above the rear portion of the right side surface of the cabin 20.

  Therefore, when checking the refrigerant amount of the air conditioner indicated by the transparent window 55a, it is not necessary for the operator to stand up from the seat 4 and to look through the transparent window 55a from the rear glass plate 57, and it is easy even when sitting by the rearview mirror 35. Can be confirmed. By providing the rearview mirror 35, it is possible to improve the visibility on the right side and to easily check the amount of refrigerant during maintenance.

FIG. 21 (A) shows a perspective view of the cabin of the medicine spraying vehicle as viewed from the left front, and FIG. 21 (B) shows a partially enlarged view of FIG. 21 (A).
When the operator gets on the cabin 20, the operator puts his / her foot on Step 70 and holds the hand catcher 52 attached to the rear frame 21 e to open the open / close door 25. The presence / absence of the step 70 and the hand catcher 52 facilitates getting on and off the cabin 20.

  The step 70 includes an upper step portion 70b fixed to the upper portion of the rectangular frame 70a and a lower step portion 70c fixed to the lower portion of the frame 70a. Since the surface of the lower step portion 70c is uneven, it also prevents slipping, and the upper step portion 70b is formed of a knurled arm with a spaced surface, so that mud adhered to the operator's shoes, etc. Can be dropped.

  When spraying relatively tall crops such as soybeans or when topdressing rice, the lower step portion 70c may hit the surrounding crops, and the crop may be damaged, but the front and side of the lower step portion 70c. By providing the guide 72 that surrounds the rear, damage to the crop can be prevented.

FIG. 22 (A) shows a perspective view showing another example of the step for getting on and off of the medicine spraying vehicle, and FIG. 22 (B) shows a perspective view of the step attachment portion of FIG. 22 (A).
In this example, the upper end of the frame 70a of Step 70 is rotatably connected to a shaft 74 fixed to the main frame 3, and the lower step portion 70c is formed by unevenness in the field when the medicine spraying vehicle 1 is overrun or traveling. Is pushed upward, it rotates upward (in the direction of arrow H) about the shaft 74. Further, by providing a spring 78 between the main frame 3 and the frame 70a, the step 70 is held in a state of being moved upward due to the dead center being exceeded. By adopting this configuration, it is possible to cope with work on an uneven farm field, going into and out of the farm field, and the like.

In FIG. 23, the perspective view which showed another example of the step for boarding / alighting of a chemical | medical agent dispersion | distribution vehicle is shown.
The step 170 is a weight of the step 170 itself, and by making the lower side of the airframe heavy, the center of gravity of the airframe is lowered and it is difficult to fall. By forming the upper step portion 170b and the lower step portion 170c provided on the rectangular frame 170a from heavy materials, weights can be easily configured. In the present embodiment, the upper step portion 170b and the lower step portion 170c themselves are iron blocks. On the other hand, in the case of step 70 in FIG. 22, the upper step portion 70b and the lower step portion 70c are sheet metal.

  Further, by arranging the upper step portion 170b and the lower step portion 170c alternately on the left and right sides in a step shape, the width of the step portion can be suppressed and the cost can be reduced. Further, when the lower step portion 170c is provided in the front and the upper step portion 170b is provided in the rear, it is easy to move to the auxiliary step 76 in the rear, and it is easy to get on and off the auxiliary step 76. The auxiliary step 76 is not a step for getting on and off the cabin 20, but a step for checking the amount of liquid in the medicine tank 30. The amount of liquid inside can be confirmed by riding the auxiliary step 76 and looking into the medicine tank 30 from above.

  The step 170 is directly inserted into and fixed to the hole provided in the main frame 3, so that the strength is higher than that of connecting to the main frame via another member. Further, by inserting into the main frame 3 and fixing with bolts, screws, pins or the like in holes provided in the stay 170aa that is fixed to the upper end of the frame 170a, it is easy to detach from the main frame 3.

  Further, when a U-shaped stay 170ab is provided in the horizontal portion of the frame 170a and the upper step portion 170b and the lower step portion 170c are inserted into the stay 170ab and fixed with bolts, screws, pins, etc., the step portion is fixed to the stay 170ab. Since it can be detached while being supported by 170ab, it can be easily attached and detached even if it is heavy.

  In FIG. 23, the upper step portion 170b is attached to the U-shaped space portion of the stay 170ab, but the upper step portion 170b may be mounted on the stay 170ab. In this way, the height of the upper step portion 170b can be adjusted.

  Further, the step portions 170b and 170c can be configured by providing a step portion between the upper step portion 170b and the lower step portion 170c to form three steps, or by changing the upper and lower mounting positions of the step portions 170b and 170c. Can be adjusted.

  For example, as shown in FIG. 24, a U-shaped frame 170d having a U-shaped cross section is passed over the frame 170a by welding or the like, and one side of the step portions 170b and 170c is inserted into the U-shaped opening from the lateral direction or the front side. It can be easily attached and removed by fixing with a fixing tool such as a bolt or nut (not shown) from a hole (not shown) provided in the U-shaped frame 170d.

  The upper step portion 170b and the lower step portion 170c have an anti-slip and mud removing effect by making the surfaces uneven or meshed.

  The present invention can also be used for work vehicles equipped with other work machines.

DESCRIPTION OF SYMBOLS 1 Drug distribution vehicle 2 Traveling vehicle body 3 Main frame 4 Driver's seat 5 Steering handle 6 Front wheel 7 Rear wheel 12 Bonnet 13 Lift link 14 Hitch bracket 15 Post 16 Cylinder mounting post 17 Lifting cylinder 18 Opening / closing cylinder 19 Upper / lower cylinder 20 Cabin 21 Cabin frame 22 Cabin roof 25 Open / close door 26 Holder 27 Forward projecting arm 29 Strike 30 Drug tank 31 Open / close arm 32 Guide plate 34 Door frame 34a, 34c First fulcrum 34b, 34d Second fulcrum 35 Mirror 36 Support arm 38 Front glass plate 39 Rear glass Plate 40 Control boom 41a, 41b Nozzle 44 Connecting frame 45 Boom post 46 Damper 47 Handle 48 Capacitor 49 Guard 52 Hand catcher 54 Buffer material 55 Receiver dryer 57 Glass 59 net 60 capacitor cover 61 net rail 66 bis 67 ferrous member 68 female screw 69 rubber 70, 170 Step 72 guide 74 the shaft 76 receives the auxiliary step 78 the spring 80 boom

Claims (3)

A cabin (20) serving as an operator cockpit provided with an opening and closing door (25);
A control boom (40) for spraying a medicine having a configuration capable of switching between a chemical solution spreading posture extending in the left-right direction and a storage posture extending laterally of the open / close door (25);
A guide body (32) provided on the cabin frame (21) constituting the cabin (20) for guiding the opening / closing door (25) in the front-rear direction and opening toward the front side from the cabin (20);
A support frame (31, 34, 44) of the door (25) provided inside the door (25);
A stopper (50) provided on the support frame (31, 34, 44) for preventing an overstroke that contacts the side surface of the cabin (20) when the open / close door (25) is opened. Drug spraying vehicle. A glass plate (38) is provided on the front side of the door (25) on the side of the cabin (20),
A cushioning material (54) is provided in a portion of the support frame (31, 34, 44) adjacent to the glass plate (38) when the open / close door (25) is opened. The medicine spraying vehicle according to 1. Provided on the upper part of the support frame (31, 34, 44), projecting part (29) projecting inside the support frame (31, 34, 44), and provided on the side surface of the cabin (20). A locking mechanism (26, 29) for holding the open / close door (25) in an open state.
The stopper (50) is provided on the support frame (31, 34, 44),
The medicine spraying vehicle according to claim 2, wherein the cushioning material (54) is provided below the support frame (31, 34, 44).

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