CN107439521B

CN107439521B - Self-propelled plant protection machine

Info

Publication number: CN107439521B
Application number: CN201611231913.XA
Authority: CN
Inventors: 土居一纪; 萩山丈士; 梶原隆幸; 越智孝司; 矢野典弘; 上岛徳弘
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2016-05-31
Filing date: 2016-12-28
Publication date: 2021-07-27
Anticipated expiration: 2036-12-28
Also published as: JP2017212919A; CN107439522B; CN107439520B; CN107439520A; CN107439521A; CN107439522A

Abstract

The invention provides a self-propelled plant protection machine. When an object is present on the side of the opening/closing door, the opening/closing door cannot be opened widely, and there is a disadvantage that the entrance is narrow. The self-propelled plant protection machine is provided with on a traveling vehicle body (2): a cabin (20) as an operator control room; a spray rod (40) for spraying the liquid medicine; and a chemical tank (30), wherein the cabin (20) is provided with an opening/closing door (25), and when the opening/closing door (25) is opened, the opening/closing door (25) is configured to overlap the cabin (20) when viewed from the front of the body.

Description

Self-propelled plant protection machine

Technical Field

The invention relates to a self-propelled plant protection machine which is used for broadcasting liquid medicine in a medicine box from a spray rod in the advancing process.

Background

In order to prevent exposure of the liquid medicine dispensed from the spray bar, there is a technique having a chamber (for example, see patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2014-76789

In the aforementioned known technique, an opening/closing door is provided in the cabin. However, since the opening/closing door is configured to be opened and closed by being rotated at the front-side branch point, when an object is present on the side, the opening/closing door cannot be opened widely, which has a drawback that the entrance is narrow. Further, the opening and closing guide becomes an obstacle.

Disclosure of Invention

The present invention addresses the problem of eliminating the aforementioned problems.

The above object of the present invention can be achieved by the following configuration.

That is, a first aspect of the present invention provides a self-propelled plant protection machine in which a traveling vehicle body 2 is provided with: a cabin 20 as an operator's cab; a spray bar 40 for spraying the liquid medicine; and a chemical tank 30, wherein the cabin 20 is provided with an opening/closing door 25, and when the opening/closing door 25 is opened, the opening/closing door 25 is configured to overlap the cabin 20 when viewed from the front of the body.

A second aspect of the present invention is the self-propelled plant protection machine according to the first aspect, wherein a guide member for guiding an opening/closing operation direction of the opening/closing door 25 is provided.

A third aspect of the present invention provides a self-propelled plant protection machine, in which a traveling vehicle body 2 is provided with: a cabin 20 as an operator's cab; a nozzle rod 40b configured to be switchable between a chemical liquid spreading posture extending in the left-right direction and a storage posture extending in the front-rear direction on the side of the chamber 20; and a chemical tank 30, wherein the cabin 20 is provided with an opening/closing door 25, and the self-propelled plant protection machine is provided with a guide for guiding an opening/closing operation direction of the opening/closing door 25, the guide being provided between the cabin 20 and the spray bar 40b in a plan view.

Effects of the invention

In the present invention, since the structure is such that the opening and closing door 25 is opened, the opening and closing door 25 is configured to be overlapped with the cabin 20 when viewed from the front of the body when the opening and closing door 25 is opened, and therefore the opening and closing door 25 is largely opened.

In the second aspect of the present invention, the opening and closing door 25 is opened and closed stably.

In the third aspect of the present invention, since the guide is provided between the cabin 20 and the spray bar 40b in a plan view, the opening/closing door 25 is largely opened forward.

Drawings

Fig. 1 is a left side view of a medicament dispensing vehicle.

Fig. 2 is a perspective view of the drug dispensing vehicle as viewed from the front right.

Fig. 3 is a perspective view of the drug dispensing vehicle viewed from the upper left rear side.

Fig. 4 is a plan view of a portion of the medication dispensing vehicle omitted.

Fig. 5 is a plan view showing a spreading operation state of the medicine spreading vehicle.

Fig. 6 is a perspective view of a part of the cabin viewed from the left rear and upper side.

Fig. 7 is a perspective view of a part of the cabin viewed from the left rear upward direction.

Fig. 8 is a top view of a portion of the chamber.

Fig. 9 is a top view of a portion of the chamber.

Fig. 10 is a plan view of the open/close door on the left side in an open state.

Fig. 11 (a) is a perspective view of the cabin frame structure showing a state where the left opening/closing door is closed, and (B) is a perspective view of the cabin frame structure showing a state where the left opening/closing door is opened.

Fig. 12 is a perspective view showing a frame structure of the cabin.

Fig. 13 is a side view of the right side of the cabin as viewed from the inside of the cabin.

Fig. 14 is a perspective view of the left opening/closing door.

Fig. 15 is a perspective view of the cabin as viewed from the left front side and the upper side (a state where the opening/closing door is closed).

Fig. 16 is a perspective view of the cabin as viewed from the left front and upward (a state in which the opening/closing door is opened halfway).

Fig. 17 is a perspective view of the cabin as viewed from the left front and upward (a state where the opening/closing door is fully opened).

Fig. 18 is a perspective view of a part of the cabin viewed from the upper left.

Fig. 19 is a perspective view showing a frame structure of the cabin viewed from the right rear upper side (a state where the opening/closing door is closed).

Fig. 20 is a perspective view showing a frame structure of the cabin as viewed from the right rear upper side (a state where the opening/closing door is fully opened).

Fig. 21 is a perspective view of a part of the cabin viewed from the left rear.

Fig. 22 is a plan view of a portion of the medication dispensing vehicle omitted.

Fig. 23 is a front view of the glass portion and door frame of the opening and closing door.

Fig. 24 is a perspective view of the drug dispensing vehicle with a part thereof omitted.

Fig. 25 is a perspective view of the drug dispensing vehicle with a part thereof omitted.

Fig. 26 is a perspective view of a part of the cabin viewed from the left rear.

Fig. 27 is a perspective view of a part of the cabin viewed from the front left.

Fig. 28 is a perspective view of a part of the cabin viewed from the left rear.

Fig. 29 (a) is a side view of a part of the chamber viewed from the right side, and (b) is a side view of the condenser.

Fig. 30 is a perspective view of a part of the cabin viewed from the lower left rear side.

Fig. 31 is a perspective view of the cabin as viewed from the rear right.

Fig. 32 is a perspective view of the cabin as viewed from the front right above.

Fig. 33 is a perspective view of the cabinet and the medicine tank viewed from the left rear.

Description of the reference symbols

2: traveling vehicle body, 6: front wheel, 7: rear wheel, 20: cabin, 21 c: upper frame, 25: opening and closing door, 30: kit, 40: spray bar, 501L: a guide (guide rail).

Detailed Description

Modes (embodiments) for carrying out the present invention will be specifically described with reference to the accompanying drawings. The present invention is not limited to the contents described in the following embodiments. The components described below include those that can be easily conceived by a person having ordinary skill in the art and substantially the same. Further, the following structures may be combined as appropriate. Various omissions, substitutions, and changes in the structure may be made without departing from the spirit of the invention.

The chemical spreading vehicle 1 of the present embodiment is a working vehicle in which an operator such as an operator rides on the traveling vehicle body 2 and spreads a chemical over a field while performing a driving operation. As shown in fig. 1 to 3, the chemical spreading vehicle 1 includes a traveling vehicle body 2, a cabin 20, a chemical tank 30, a spray bar 40, and the like, and the spray bar 40 spreads the chemical supplied from the chemical tank 30 over a field. In the present embodiment, the traveling direction of the medicine dispensing vehicle 1 is the direction along the front-rear direction of the traveling vehicle body 2, and is the direction from the driver seat 4 (see fig. 4) toward the front glass GF during the straight traveling of the medicine dispensing vehicle 1. The vehicle width direction or the left-right direction of the traveling vehicle body 2 is a direction horizontally perpendicular 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 is configured to include a main frame 3, a driver seat 4, a steering wheel 5, left and right front wheels 6, and left and right rear wheels 7. The main frame 3 is formed to extend in the front-rear direction of the traveling vehicle body 2. The driver seat 4 is a seat for the operator to sit when the operator performs a driving operation of the medicine dispensing vehicle 1. An operation unit 90 for controlling operations such as opening and closing of the spray bar 40 and spreading of a chemical is disposed at an appropriate position around the driver seat 4. The steering wheel 5 changes the traveling direction of the chemical dispensing vehicle 1 by operating at least the left and right

front wheels

6, 6 by the turning operation of the operator.

The power of the engine in the hood BN is appropriately shifted in a transmission (not shown), and the power after the shift is transmitted to the front wheels 6 and the rear wheels 7, thereby rotationally driving the front wheels 6 and the rear wheels 7.

The cabin 20 surrounds the driver seat 4 and peripheral equipment, a steering wheel, and the like, thereby forming a passenger compartment. The chamber 20 is disposed between the chemical tank 30 and the spray bar 40. The cabin 20 includes a cabin frame 21(21a, 21b, 21c, 21d, etc.), a cabin ceiling 22, left and right opening/

closing doors

25L, 25R, etc.

The cabin frame 21 includes: left and right 1

st front frames

21a, 21a disposed on the left and right sides in the vehicle width direction of the front portion of the cabin 20 and erected on the main frame 3; left and right 2

nd frames

21d, 21d disposed rearward of the left and right 1

st front frames

21a, 21 a; and left and right 3

rd frames

21e, 21e disposed behind the left and right 2

nd frames

21d, 21 d. Further, left and right 4

th frames

21b, 21b not erected on the main frame 3 are formed behind the left and right 3 rd frames 21e, and the cabin frame 21 includes an upper frame 21c (see fig. 12) connecting upper portions of the left and right 1 st front frames 21a, left and right 2 nd frames 21d, left and right 3 rd frames 21e, and left and right 4

th frames

21b, 21 b.

The lower end portions of the left and right 4

th frames

21b, 21b and the intermediate portions of the left and right 3

rd frames

21e, 21e are connected by the left and right 5

th frames

21f, 21 f. The middle portions of the left and right 1

st front frames

21a, 21a are connected by a front connecting frame 21 g. The left and right 4 th frames 21b and 21b are connected by a rear connecting frame 21h at a position slightly above the lower end.

A front glass GF is attached between the front connection frame 21g and the upper frame 21c, and a lower front glass GFu is attached below the front connection frame. A rear glass 57 is provided between the rear connecting frame 21h and the upper frame 21c, and the rear glass 57 is configured to be openable and closable outward with the upper side as a fulcrum. Further, a left 1 st glass LG1 is attached between the left 1 st front frame 21a and the left 2 nd frame 21d, a left 2 nd glass LG2 is attached between the left 3 rd frame 21e and the left 4 th frame 21b, a right 1 st glass RG1 is attached between the right 1 st front frame 21a and the right 2 nd frame 21d, a condenser 48 for cooling and liquefying a refrigerant for air conditioning is attached between the right 3 rd frame 21e and the right 4 th frame 21b, and a right 2 nd glass RG2 is attached below the condenser 48.

The medicine tank 30 is disposed in proximity to the right and left 4 th frames 21b, to the right and left 5 th frames 21f, and to the rear of the right and left 3

rd frames

21e, 21 e.

Left and right operation lamps WR1, WR2 are provided at the front upper part of the cabin 20. Further, left and right headlamps BFL, BFR are provided at the front portion of the hood BN. The left and right work lights WR1 and WR2 are configured to be interlocked with the left and right headlamps BFL and BFR. That is, if the left and right task lamps WR1 and WR2 are turned on, the left and right headlamps BFL and BFR become the light-off circuits. This prevents simultaneous lighting, thereby ensuring charge/discharge performance and preventing battery power from being exhausted.

The medicine tank 30 is a container that stores medicine dispensed from the spray bar 40. The chemical tank 30 is disposed on the rear side of the chamber 20, as shown in fig. 1. As shown in fig. 4, medicine tank 30 is formed in an コ shape so as to surround the right and left sides and the rear side of driver seat 4 in a plan view. The chemical tank 30 is detachably mounted on the main frame 3. The chemical is a liquid substance such as a liquid obtained by dissolving a fertilizer, an agricultural chemical, or the like in a solvent (e.g., water) or a liquid (e.g., water) containing a solid component such as a fertilizer, an agricultural chemical, or the like.

As shown in fig. 5, the spray bar 40 spreads the medicine toward the front side of the medicine spreading vehicle 1. The chamber 20 is omitted in fig. 5. The spray bar 40 is provided on the front side of the traveling vehicle body 2. The spray bar 40 is composed of a center spray bar 40a and side spray bars 40b, 40b on both sides. The center boom 40a is disposed on the front side of the chemical dispensing vehicle 1 and extends horizontally in the vehicle width direction of the travel vehicle body 2. A plurality of nozzles 41a for spraying a medicine are arranged at intervals on the center nozzle bar 40 a. The left and right side booms 40b are attached to the left and right sides of the center boom 40a so as to be switchable between a broadcast 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 lance 40b is supported by lance receiving portions 80 disposed on both left and right sides of the rear side of the traveling vehicle body 2 in the storage posture. A plurality of nozzles 41b for spraying a medicine are disposed at intervals on the side spray bar 40 b.

The condenser 48 of the air conditioner is disposed at the aforementioned position, the refrigerant is cooled, and the refrigerant that is continuously liquefied is sent to a receiver drier 55 (see fig. 3) disposed behind the condenser 48. The condenser 48 is covered with a condenser cover 48 a.

As shown in fig. 2, the air conditioner main body 100 that generates cooling air is disposed on the ceiling portion of the cabin 20 and is covered by a cabin ceiling 22 that covers the upper portion of the cabin 20. This can protect the air conditioner main body 100 from splashing chemical liquid during plant protection. As shown in fig. 1, the external air introducing unit 110 of the air conditioner is provided below the center of the rear portion of the cabin roof 22. This allows the external air to be introduced from the rear portion where the chemical liquid is less scattered.

Further, a cover 715 is provided between the chamber 20 and the chemical tank 30. The cover 715 may be formed of a metal plate or an elastic member such as rubber. Spacers are provided between the hood BN and the front glass GF of the chamber 20, and between the hood BN and the left and right lower front glasses Gfu. This prevents entry of water, rain water, dust, and the like during washing. The appearance is also improved.

Left and right opening/

closing doors

25L and 25R into which glass plates are fitted are provided on both side surfaces of the chamber 20. In a state where the left opening/closing door 25L is closed, the left opening/closing door 25L is positioned at a portion surrounded by the left 2 nd frame 21d, the left 3 rd frame 21e, the upper frame 21c, and the floor surface (floor) ST. The right opening and closing door 25R is symmetrical to the left opening and closing door 25L, and therefore, the description thereof is omitted. Moreover, the explanation of the components symmetrically disposed on the left and right is also omitted.

Fig. 7 is a view showing the front half of the medicine dispensing vehicle 1 when the left opening/closing door 25L is opened, as viewed obliquely from above.

Fig. 8 is a partial plan view of a state where the left opening/closing door 25L is closed as viewed from above, and fig. 10 is a partial plan view of a state where the left opening/closing door 25L is fully opened as viewed from above.

As shown in fig. 6, 8, and 10, a left bracket 26L for holding a left opening/closing door 25L when opened is provided at the left end of the front surface of the cabin 20. Specifically, a forward projecting arm 27L facing the front left side is fixedly attached to the upper portion of the left 1 st front frame 21a by welding, and a left bracket 26L is attached to the forward projecting arm 27L by a screw. The left bracket 26L is a plate spring structure sandwiched from the top-bottom direction. Then, the rod-shaped left striker 29L attached to the left opening/closing door 25L by welding is pinched between the left bracket 26L, and the left opening/closing door 25L is held in an open state.

A left side mirror 35L is attached to the left front projecting arm 27L via a left support plate 36L.

Fig. 11 (a) is a perspective view of the cabin frame 21 in a state where the left opening/closing door 25L is closed. Fig. 11 (B) is a perspective view of the cabin frame 21 in a state where the left opening/closing door 25L is fully opened.

As shown in fig. 11 (a) and 11 (B), an コ -shaped left door frame 34L is attached to a plurality of important parts of the left opening/closing door 25L. The left door frame 34L is attached to the glass portion 25g of the left opening/closing door 25L. And is configured to open a hole in the glass portion 25g and fix it by a screw.

The left opening/closing door 25L is connected to the cabin body side 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 configured as follows.

The left door frame 34L is formed in an コ -shape, and includes an upper portion 34Lu, a front portion 34Lf, and a lower portion 34 Ld. The upper side portion 34Lu is provided with an upper first fulcrum 34a, the upper side middle frame 21d is provided with an upper second fulcrum 34b, and the upper first fulcrum 34a and the upper second fulcrum 34b are connected by the upper opening/closing arm 31.

The lower opening/closing arm 31 has the same shape as the upper opening/closing arm 31. The lower opening/closing arm 31 is connected to a lower first fulcrum 34a and a lower second fulcrum 34 b.

The upper opening/closing arm 31, the upper first fulcrum 34a, and the upper second fulcrum 34b are located at the same position as the lower opening/closing arm 31, the lower first fulcrum 34a, and the lower second fulcrum 34b in plan view. Therefore, the fulcrum arm 34a1 is attached rearward from the front side portion 34Lf of the left door frame 34L, and the lower first fulcrum 34a is provided on the fulcrum arm 34a 1.

The upper and lower opening/closing

arms

31, 31 are bent in a J-shape, and as shown in fig. 11 (B), in a state where the left opening/closing door 25L is opened, the upper and lower opening/closing

arms

31, 31 rotate around the second fulcrums 34B, 34B so as to detour in the outer direction of the left intermediate frame 21 d.

The left upper frame 21c is provided with a guide plate 32 having a curved guide groove 32a, and the curved guide groove 32a guides the opening/closing rail of the left opening/closing door 25L. That is, the pin 25a is always fitted into the guide groove 32a, and the pin 25a is supported and fixed upward at the rear upper end of the opening/closing door 25, and if the left opening/closing door 25L moves to the opening side, the opening/closing door 25 moves along the curved guide groove 32a of the guide plate 32 together with the pin 25a and is opened to the maximum extent to the position shown in fig. 7, 10, and 11 (B).

As shown in fig. 11 (a), since the striker 29L, the upper opening/closing arm 31, and the pivot 34a of the left door frame 34L are provided on the left door frame 34L with a gap in the vertical direction, fingers are not caught between the striker 29L and the upper opening/closing arm 31.

While the left opening/closing door 25L in the closed state shown in fig. 8 is moved to the open state shown in fig. 7 and 10, the left opening/closing door 25L performs an operation that does not interfere with surrounding components, and the left opening/closing door 25L moves largely to the left front of the cabin 20, so that the operator in the cabin 20 can easily walk out to the outside of the medicine dispensing vehicle 1. That is, the left opening/closing door 25L opens and closes within the space between the left side lance 40L and the cabin 20 main body.

As a feature of the present configuration, the state shown in fig. 9 is between the closed state shown in fig. 8 and the open state shown in fig. 10. The state shown in fig. 9 is a state after the parallel translation from the state of fig. 8. That is, the left opening/closing door 25L moves in parallel forward while moving outward of the cabin 20. Thereafter, as shown in the state of fig. 10, the front side of the left opening/closing door 25L moves forward while rotating to approach the cabin body side.

As shown in the perspective view of the upper left front of the cabin 20 in fig. 6, a left side mirror 35L capable of monitoring the rear of the body is disposed at an upper front portion on the left outer side of the cabin 20. The left side mirror 35 is fixedly supported by a support plate 36, and the support plate 36 is disposed above the side surface of the cabin 20. The left support plate 36L is attached to the left front projecting arm 27L by a bolt. The through hole 36a of the left front projecting arm 27L can be used as a hole for lifting the cabin. The right side mirror 35R has a symmetrical structure, and therefore, the description thereof is omitted.

Fig. 13 is a cross-sectional view of the cabin, and the right opening/closing door 25R is viewed from the inside of the cabin. The right opening/closing door 25R is provided with a front side locking knob 42 and a rear side locking knob 43.

Further, as in the configuration example shown in the perspective view of the left opening/closing door 25L in fig. 14, by providing the connecting frame 44 that connects the upper and lower opening/closing arms 31, the left opening/closing door 25L can be opened and closed stably. The connecting frame 44 is formed on the left side of the opening/closing door 25L with respect to the longitudinal half portion of the opening/closing arm 31, and the opening/closing of the left side opening/closing door 25L can be more stably performed. The coupling frame 44 can also be used as a handle for opening and closing the left opening/closing door 25L.

Fig. 15 to 18 show other configurations of the opening and closing methods of the left and right opening and

closing doors

25L and 25R, and for convenience of viewing, the cabin roof 22 is removed. In this case, since the left opening/closing door 25L is bilaterally symmetrical to the right opening/closing door 25R, the left opening/closing door 25L will be described, and the description of the right opening/closing door 25R will be omitted.

The structure of the left guide rail 501L arranged from the front of the cabin 20 to the front will be described with respect to the components corresponding to the above-described guide plate 32 (opening/closing guide plate of the opening/closing door 25L). A1 st mounting portion 510 is fixed to the left upper frame 21c by welding, and the rear portion of the left rail 501L is mounted to the 1 st mounting portion 510 by a bolt 510 a. The front portion of the left rail 501L is attached to the left front projecting arm 27L for attaching the left side mirror 35L by a bolt 510 b. Further, the 2 nd mounting portion 511 is fixed to the left upper frame 21c by welding in front of the 1 st mounting portion 510, a connecting plate 511a is fixed by welding to an upper portion of the middle portion of the left guide rail 501L, and the connecting plate 511a and the 2 nd mounting portion 511 are mounted by a bolt 511 b. Thus, the left guide rail 501L is fixed at position 3 with respect to the device itself, and therefore, the pin 501a on the side of the opening/closing door 25L moves smoothly in the guide groove 501La without being bent. The lower side of the pin 501a is fixed to the upper front portion of the left opening/closing door 25L, and the upper side of the pin 501a always enters the guide groove 501La of the left guide rail 501L.

Since the guide (left guide rail) 501L for moving the opening/closing door 25 in the front-rear direction is provided at the upper portion of the cabin 20, the operator is not hindered when the operator rides in or out of the cabin 20.

Since the left guide rail 501L is provided on the upper frame 21c constituting the cabin 20, the left guide rail 501L can be firmly supported.

The front portion of the left guide rail 501L is configured to protrude forward of the cabin 20, and therefore the opening/closing door 25 is largely opened forward.

Fig. 15 shows a state where the opening/closing door 35L is closed. Fig. 16 shows a state in which the left opening/closing door 25L is opened halfway, and the left opening/closing door 25L is opened to this position by parallel movement. Fig. 17 shows a state where the left opening/closing door 25L is fully opened.

Since the left guide rail 501L itself has an arc shape, a space exists between the inner side of the left guide rail 501L and the left upper frame 21 c. This improves the appearance of the product. Further, the large guide rail is not positioned above the entrance/exit portion 502, and thus the carriage and the landing are simplified.

Fig. 19 is a perspective view of the cabin frame 21 in a state where the left opening/closing door 25L is closed. Fig. 20 is a perspective view showing the cabin frame 21 in a state where the left opening/closing door 25L is fully opened. The structure of fig. 19 and 20 is a modified structure of the structure of fig. 14. The operations of the upper and lower opening/closing arms 31, the fulcrum, and the like are the same as those of the configuration of fig. 11.

A left door frame 34L (inverted L-shaped) is continuously disposed at a necessary minimum portion of the upper and rear portions of the left opening/closing door 25L. The glass portion 25g of the left opening/closing door 25L is formed as one piece. This improves the visibility.

The connecting frame 44 connecting the upper and lower opening/closing

arms

31, 31 is configured to be provided so as to be movable forward as much as possible. A holding bracket 700 for holding the closed state is provided at the rear portion and the vertical middle portion of the left opening/closing door 25L. The holding bracket 700 is not a locking device but a locking member. The holding bracket 700 is automatically rotated by abutting against a wedge-shaped member by closing the left opening/closing door 25L. Further, since the spring is provided inside the holding bracket 700, the holding bracket 700 itself is closely attached to the wedge-shaped member, and thus the left opening/closing door 25L can be appropriately held.

Automatically becoming the locking state. A locking knob 701 for locking the opening/closing door 25L is provided at the front portion and the vertical middle portion of the left opening/closing door 25L. The locking knob 701 has a lock arm 702 that rotates integrally with the knob 701. Reference numeral 703 denotes an opening/closing handle for opening/closing the left opening/closing door 25L, and is disposed in a range from the vicinity of the locking knob 701 to the vicinity of the holding bracket 700. This improves the operability. Specifically, the front portion of the opening/closing handle 703 is attached to a base 701a on which the locking knob 701 is attached to the glass portion 25g, and the rear portion of the opening/closing handle 703 is attached to the left door frame 34L.

A damper 704 that constantly urges the left opening/closing door 25L in the opening direction is provided between the left 1 st front frame 21a and the coupling frame 44. Thus, when the lock is released by the lock knob 701, the left opening/closing door 25L is automatically opened. A left riding and descending handle 705 is provided at a vertically intermediate portion of the left intermediate frame 21 d. The linking frame 44 may also be used as a handle for taking in and out.

As shown in fig. 21, the coupling frame 44 is formed in a shape avoiding the left lifting handle 705, and therefore is easy to hold during lifting. An opening/closing handle 706 is provided at a lower rear portion of the left opening/closing door 25L. This facilitates the opening and closing operation of the opening and closing door 25L even when the left side boom 40L is stored. Reference numeral 707 is a striker when the left opening/closing door 25L is closed, and is provided between the left middle frame 21d and the left lifting/lowering handle 705. This ensures the rigidity of the striker 707.

The position of the left side mirror 35L is configured to be switchable between a normal state shown in fig. 18 and a good visibility state shown in fig. 22.

Fig. 23 shows a positional relationship between the left door frame 34L and the glass portion 25g of the left opening/closing door 25L. The gap L1 between the left door frame 34L and the glass portion 25g is configured to be enlarged as the gap is separated in the vertical direction from the vertically intermediate portion of the left door frame 34L. This improves the sealing property when the left opening/closing door 25L is closed.

Next, the ascending/descending auxiliary steps and the working auxiliary steps will be described. As shown in fig. 24, an auxiliary step 600 for ascending and descending is provided substantially at the center between the front wheels 6 and the rear wheels 7. The ascending and descending auxiliary step is composed of a first step 600a and a second step 600 b.

Further, an auxiliary ladder 601 for work is provided above the rear wheel 7 (above the front portion of the rear wheel 7) and on the lower side of the chemical tank 30. This allows the operator to move from the cabin 20 to the auxiliary work step 601, and to easily remove the cover 30a of the chemical tank 30 and perform works such as water supply while being mounted on the auxiliary work step 601. Both the ascending/descending step 600 and the working step 601 are configured to be detachable from the machine body frame. A fuel tank 604 is provided below the cabin 20. A cutout 605a is formed in the outer panel 605 on the lower side of the left opening/closing door 25L, and a fuel supply cap 604a of the fuel tank 604 is provided in the cutout 605 a. Since the second step 600b is disposed below and laterally to the oil feeding cap 604a, the second step 600b can be used as a table on which a refueling tank is placed during refueling. Further, based on the relationship of the wheelbases of the front wheel 6 and the rear wheel 7, the first step 600a is disposed between the front wheel 6 and the rear wheel 7 at a position not in contact with the front wheel 6, and the second step 600b is disposed at a position offset in the front-rear direction of the body with respect to the first step 600 a. That is, if the left opening/closing door 25L is opened, the left opening/closing door 25L portion becomes the entrance for the passenger, and therefore the second step 600b is disposed at the substantially central portion in the front-rear direction of the left opening/closing door 25L. The position of the second step 600b may be any position as long as it does not interfere with the ascending and descending of the cabin 20.

As shown in fig. 25, a left boom stopper 602L is provided on the left 4 th frame 21b of the cabin 20. Likewise, a right boom stopper 602R (see fig. 2) is also provided on the right 4 th frame 21 b. Thus, when the left and right side lances 40b are accommodated in the lance receiving portion 80, the left and right side lances 40b can be prevented from coming into contact with the cabin 20 main body. An elastic body (rubber) 603 is attached to the surface of the left stem stopper 602L and the surface of the right stem stopper 602R by bolts 603a, and may be bonded by an adhesive. This can absorb an impact to prevent damage to the left and right side booms 40 b. When the boom stopper 602L is mounted on the working ladder 601 for working, it also serves as a hand rest (hand catcher). Fig. 27 shows an enlarged view of the vicinity of the spray bar stop 602L on the left. A left turn lamp 710 is provided on the upper portion of the boom stopper 602L on the left side and inside the elastic body (rubber) 603. Further, a nozzle outer switch 711 that operates the nozzle 40 is provided inside the elastic body (rubber) 603 and below the nozzle stopper 602L on the left side. Reference numeral 711a denotes a lift switch of the nozzle bar, and reference numeral 711b denotes an open/close switch of the nozzle bar. Thus, no additional components are required for mounting the left turn light 710 and the spray bar exterior switch 711. As shown in fig. 28, the left boom stopper 602L can be fixed by appropriately rotating about the shaft center 713 as a rotation fulcrum by removing the fixing bolt 712 and loosening the upper and lower bolts 714.

As shown in fig. 26, a damper 708 is provided between the rear coupling frame 21h and the rear glass 57. This facilitates the opening and closing operation of the rear glass 57, and improves the visibility. Reference numeral 709 denotes a cover of the receiver drier, and the cover 709 is provided with a refrigerant inspection window 709 a. Thereby, the rear glass 57 is opened to facilitate the refrigerant inspection.

Fig. 29 (a) is a side view of the periphery of the condenser. Fig. 29 (b) shows an enlarged view of the condenser cover 48 a. As shown in fig. 29 (b), the dust-proof net 48b is configured to be slidable forward and detachable. This facilitates the inspection work. Further, the handle 48c of the condenser cover 48a is partially configured at a position not interfering with the right opening/closing door 25R.

As shown in fig. 30, a rear stay 717 is attached to the cabin frame 21 c. As shown in fig. 31, the monitor 718 is attached to the 1 st front frame 21a on the left side, and the rear view can be displayed on the monitor 718. The monitor 718 is configured to be capable of displaying various information of the body, alarm guidance, a GPS-based travel direction, and the like. Further, since the monitor 718 and the left side mirror 35L come into the same field of view, the driving operation becomes easy.

As shown in fig. 32, a GPS antenna stay 719 is provided at the center of the front cabin frame 21 c. Since the GPS antenna stay 719 is formed in an L-shape, the GPS antenna stay 719 is disposed above the cabin ceiling 22, and the reception sensitivity is improved.

As shown in fig. 33, a rear cover 720 is provided in a range from the lower side of the rear glass 55 to the chemical tank 30. Only the upper end of the rear cover 720 is fixed to the rear connecting frame 21h at a plurality of positions by bolts 720a, and the lower end of the rear cover 720 is not fixed. This prevents water, dust, and the like from entering, and improves the appearance.

Claims

1. A self-propelled plant protection machine is provided with, on a traveling vehicle body (2):

a cabin (20) as an operator control room;

a spray rod (40) for spraying the liquid medicine; and

a medicament box (30),

the self-propelled plant protection machine is characterized in that,

an opening/closing door (25) is provided to the cabin (20), the opening/closing door (25) is configured to open toward the front side,

the self-propelled plant protection machine is provided with a guide piece for guiding the opening and closing action direction of the opening and closing door (25), the guide piece is a guide plate with a curved guide groove, a pin is supported and fixed upwards at the upper end of the rear part of the opening and closing door, and the pin is embedded into the guide groove, so that the guide piece is configured to move the front part of the opening and closing door forwards while rotating and moving the front part of the opening and closing door to be close to the cabin body side, so as to guide the opening and closing action of the opening and closing door in the front and back direction, furthermore, the front part of the opening and closing door moves to be more front than the front part of the cabin,

when the opening/closing door (25) is opened, the opening/closing door (25) is configured to overlap the cabin (20) when viewed from the front of the body,

the left side of cabin (20) is provided with left spray lance backstop (602L), the right side of cabin (20) is provided with right spray lance backstop (602R), elastomer (603) are installed respectively to the surface of left spray lance backstop (602L) and the surface of right spray lance backstop (602R), the upper portion of left spray lance backstop (602L) just is in the inboard of elastomer (603) is provided with left direction lamp (710), the lower part of left spray lance backstop (602L) just is in the inboard of elastomer (603) is equipped with spray lance external switch (711) of operating spray lance (40).

2. The self-propelled plant protection machine of claim 1,

the spray bar comprises a side spray bar (40b), the side spray bar (40b) is configured to be capable of switching between a chemical liquid spreading posture extending in the left-right direction and a storage posture extending in the front-back direction at the side of the chamber (20),

the guide is disposed between the cabin (20) and the side boom (40b) in a plan view,

the left boom stopper (602L) is configured to be rotatable with a shaft core (713) as a rotation fulcrum.