JP2017225428A - Self-propelled pest control machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-propelled pest control machine allowing an operator to conduct pest control work for a long period of time by keeping an environment in a cabin in which the operator boards comfortable.SOLUTION: In the self-propelled pest control machine, a cabin 20 is arranged in a front part of the travelling machine body which travels with front and rear wheels 6 and 7, and a chemical tank 30 is loaded in a rear part of the machine body. A control boom 40 is arranged in front of the cabin 20 and can be switched between a pest control work posture in which the control boom laterally extended, and a housed posture in which the control boom is arranged along a lateral side of the travelling machine body. A condenser 48 for exchange of an air conditioning cooling medium is arranged at upper rear of the cabin 20 for air conditioning the cabin 20 inside.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a self-propelled control machine for spraying chemicals such as agricultural chemicals on crops in a field.

  As described in Patent Document 1 below, the self-propelled control machine is provided with a cabin in which an operator gets on and operates a chemical in front of a chemical tank in which a chemical is dissolved.

Japanese Patent No. 5789583

  The cabin on which the operator is boarded improves the confidentiality in order to protect the worker from the mist of chemical sprayed from the nozzle of the control boom, but air conditioning is necessary because the cabin interior becomes hot during the control work in the summer. However, it is not described in the self-propelled control machine.

  An object of the present invention is to enable a self-propelled control machine to perform a control work for a long time while maintaining a comfortable environment in a cabin on which an operator is boarded.

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

  According to the first aspect of the present invention, a control boom 40 provided at the front portion of the cabin 20 is provided with a cabin 20 at the front portion of the traveling vehicle body 2 traveling on the front wheels 6 and the rear wheels 7 and mounted with a chemical tank 30 at the rear portion. In a self-propelled control machine capable of switching between a control work posture extended from side to side and a storage posture along the left and right side portions of the traveling vehicle body 2, a condenser 48 for heat exchange of air conditioning refrigerant is connected to the cabin 20. The self-propelled control machine is characterized in that the cabin 20 is air-conditioned by being arranged on the rear upper side.

  The invention according to claim 2 is the self-propelled control machine according to claim 1, wherein the front portion of the medicine tank 30 is bulged to the lower side of the condenser 48.

  According to a third aspect of the present invention, the drive motor for the condenser fan 53 that blows air and cools the condenser 48 is an electric variable motor. Control machine.

  According to the first aspect of the present invention, the control work under the hot summer heat can be comfortably and safely performed in the cabin 20 air-conditioned using the heat exchange condenser 48. The heat exchanging capacitor 48 does not interfere with the movement of the control boom 40 that moves left and right outside the cabin 20 because it does not exist inside the vehicle 20 and does not interfere with the steering operation. Further, since the capacitor 48 is provided on the cabin 20, the influence of dust and the like is reduced.

  In the second aspect of the invention, in addition to the effect of the first aspect, a part of the medicine tank 30 is bulged using the space below the heat exchanging capacitor 48, so the volume of the medicine tank 30 is expanded. As a result, long-term continuous control work becomes possible.

  In the invention according to claim 3, in addition to the effect of claim 1 or claim 2, the heat exchanging capacitor 48 is cooled by air by the condenser fan 53, but when a lot of dust is generated in the field The influence of dust can be reduced by driving the drive motor at high speed. Since the drive motor is composed of an electric motor, it can quickly respond to cooling of the capacitor.

It is a right view of a chemical spray vehicle. It is the perspective view which looked at the medicine distribution vehicle from the right front. It is the perspective view which looked at the medicine distribution vehicle from the left rear. It is a top view of the chemical | medical agent dispersion | distribution vehicle which made the cabin a cross section. It is the top view which looked at the chemical spray vehicle during control work from the sky. It is a left upper perspective view of a cabin. It is the figure which looked at the front half of the chemical | medical agent dispersion | distribution vehicle at the time of opening the left opening / closing door from diagonally upper left. It is the partial top view which looked at the state which closed the left opening-and-closing door from the upper part. It is. It is the partial top view which looked at the state which opened the left opening / closing door completely from the upper direction. It is the perspective view which looked at the inside of a cabin from the upper part. It is a perspective view of a cabin left front upper part. It is the figure which looked at the right opening door from the inside of a cabin. It is a perspective view of the left opening / closing door. It is the perspective view which looked at the cabin from the right rear. It is the perspective view which looked at the cabin from the right front. It is the perspective view which looked at the cabin frame part from the left front. It is the perspective view which looked at the cabin from the left front. It is a perspective view of a capacitor, a guard, etc. which are arranged on the upper right side wall in the cabin. It is the perspective view which looked at the cabin from the right front. It is the principal part perspective view which looked at the cabin from the left rear. It is the perspective view which looked at the capacitor | condenser and the receiver dryer from the inside of a cabin. It is the principal part perspective view which looked at the cabin from the left rear. It is a top view in the state where a medicine tank was removed. It is a perspective view from the right rear lower part of the cabin of the state which removed the chemical | medical agent tank. It is a perspective view from the lower left front of the cabin with the medicine tank removed. It is a perspective view from the back of a cabin of the state where a medicine tank was removed. It is a sectional side view of the external air introduction part of an air conditioner. It is the perspective view which removed the cabin and was seen from the right rear. It is the perspective view which looked at the inside of a cabin from the left front. It is the perspective view which looked at the medicine distribution vehicle from the upper left rear. It is a right view of a chemical | medical agent tank. It is the front view of a chemical | medical agent dispersion | distribution vehicle, and the enlarged front view of a boom operation switch box.

  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 to 3, the medicine spraying vehicle 1 includes a traveling vehicle body 2, a cabin 20, a medicine tank 30, a control boom 40 for spraying medicine supplied from the medicine tank 30 to a field, and the like. 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 travels from the driver seat 4 (see FIG. 13) toward the front glass GF when the medicine spraying vehicle 1 goes straight. Direction. 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 driver 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 driver's seat 4 is a seat for an operator to sit when operating the medicine spraying vehicle 1. At an appropriate position around the driver's seat 4, an operation unit 90 for controlling operations such as opening / closing of the control boom 40 and spraying of the medicine is disposed.

  The steering handle 5 erected in front of the driver seat 4 changes the traveling direction of the medicine spraying vehicle 1 by steering at least the left and right front wheels 6 and 6 by a turning operation by an operator. That is, the front wheels 6 and 6 are steered wheels that are steered by at least a turning operation of the steering handle 5.

  The front wheels 6 and the rear wheels 7 are appropriately shifted in the transmission case (not shown) by the engine power in the bonnet BN, and the shifted power is transmitted to rotate.

  The cabin 20 forms a passenger compartment by surrounding the driver's seat 4 and peripheral devices, a steering handle, and the like. The cabin 20 is disposed between the medicine tank 30 and the control boom 40. The cabin 20 includes a cabin frame 21 (first front frame 21a, fourth frame 21b, upper frame 21c, etc.), a cabin roof 22, left and right open / close doors 25L, 25R, and the like.

  The cabin frame 21 is disposed on both the left and right sides of the front portion of the cabin 20 in the vehicle width direction, and the left and right first front frames 21a and 21a standing on the main frame 3, and the left and right first front frames 21a and 21a. Left and right second frames 21d, 21d and left and right second frames 21d, 21d, and left and right third frames 21e, 21e. Furthermore, left and right fourth frames 21b and 21b that are not erected on the main frame 3 are formed behind the left and right third frames 21e and 21e, and the left and right first front frames 21a and 21a It consists of two frames 21d and 21d, left and right third frames 21e and 21e, and an upper frame 21c that connects the upper portions of the left and right fourth frames 21b and 21b.

  The lower left and right fourth frames 21b and 21b and the middle of the left and right third frames 21e and 21e are connected by left and right fifth frames 21f and 21f. An intermediate portion of the left and right first front frames 21a, 21a is connected by a front connection frame 21g. Slightly above the lower ends of the left and right fourth frames 21b, 21b are connected by a rear connecting frame 21h.

  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 21g. 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.

  In addition, a left first glass LG1 is attached between the left first front frame 21a and the left second frame 21d, and between the left third frame 21e and the left fourth frame 21b, The left second glass LG2 is attached, and the right first glass RG1 is attached between the right first front frame 21a and the right second frame 21d, and the right third frame 21e and the right second frame 21d are attached. A condenser 48 (see FIG. 2) that cools and liquefies the air-conditioning refrigerant is attached between the four frames 21b, and the right second glass RG2 is attached to the lower side of the condenser 48.

  In addition, it is preferable to provide a water injection nozzle and a wiper on the lower left and right sides or one side of the front glass GF so that the front surface can be wiped off appropriately. It is preferable that the injection nozzles and wipers provided on the left and right can be used simultaneously or alternately, or only the necessary side can be used.

  The medicine tank 30 is installed close to the left and right fourth frames 21b and 21b and below the left and right fifth frames 21f and 21f and further to the rear of the left and right third frames 21e and 21e.

  As shown in FIG. 2, left and right work lights WR1 and WR2 are provided at the front upper portion of the cabin 20. Further, left and right headlamps BFL and BFR are provided at the front portion of the bonnet 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, the left and right headlamps BFL and BFR are turned off when the left and right work lights WR1 and WR2 are turned on. Thereby, since it does not light simultaneously, charging / discharging performance can be ensured and the battery can be prevented from running out.

  The drug tank 30 is a container that stores a drug solution sprayed from the boom 40. As shown in FIG. 1, the medicine tank 30 is disposed on the rear side of the cabin 20. As shown in FIG. 4 in plan view, the medicine tank 30 is formed in a U shape so as to surround both the left and right sides and the rear side of the driver seat 4 and is detachably mounted on the main frame 3. The drug solution is a liquid substance such as a liquid obtained by dissolving fertilizers, agricultural chemicals or the like in a solvent (for example, water), and a liquid (for example, water) containing solids such as fertilizers or agricultural chemicals.

  As shown in FIG. 5, the control boom 40 spreads the medicine widely on the left and right of the front side of the medicine spreading vehicle 1. The boom 40 is provided on the front side of the traveling vehicle body 2. The boom 40 includes a center boom 40a and side booms 40b and 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. The center boom 40a is provided with a plurality of nozzles 41a for injecting medicine in a mist form at intervals.

  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. Further, the side boom 40b is supported by boom receivers 80 (FIG. 1) disposed on the left and right sides on 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 condenser 48 of the air conditioner is provided at the above-described position, and cools the refrigerant. The refrigerant that has been liquefied by the compressor 47 (FIG. 15) is sent to the condenser 48 and arranged outside the condenser 48. Then, the air is cooled by the condenser fan 53 that sucks the air in the cabin 20, and further sent to the receiver dryer 55 (FIG. 22) installed at the rear to remove the water in the refrigerant, and is sent to the evaporator via the expansion valve. Then, the blower fan blows cold air into the cabin 20. The condenser fan 53 is driven by a variable electric motor and is controlled together with the air conditioner. When there is a lot of dust, the condenser fan 53 is rotated quickly so that the dust does not enter the cabin 20.

  As shown in FIG. 2, the air conditioner main body 100 that generates cooling air is disposed on the ceiling of the cabin 20, and is covered with a cabin roof 22 that covers the upper portion of the cabin 20. Thereby, the air-conditioner main body 100 can be protected from the scattered chemicals at the time of control. Further, as shown in FIG. 1, the outside air introduction unit 110 of the air conditioner is configured to be provided downward in the left and right center of the rear portion of the cabin roof 22. Thereby, it becomes possible to introduce outside air from the rear part where the chemical solution scatters away from the control boom 40. Although the outside air introduction part 110 is shown in FIG. 28, the opening part 110b of the outside air introduction cover 110a is on the cabin 20 side. Thereby, introduction | transduction of a chemical | medical solution can be suppressed.

  Further, the lower surface 110c of the outside air introduction cover 110a is configured to be inclined upward toward the rear. As a result, even if the chemical solution enters the outside air introduction cover 110a, it flows along the lower surface 110c without being accumulated and easily flows down the outside of the rear glass 57 to be discharged, thereby preventing direct introduction of the chemical solution.

  Left and right open / close doors 25L and 25R fitted with glass plates are provided on the left and right sides of the cabin 20. When the left door 25L is closed, as shown in FIG. 11, the left door 25L includes the left second frame 21d, the left third frame 21e, the upper frame 21c, and the left end portion of the floor surface ST. It is set as the structure located in the part enclosed by. Since the right door 25R is symmetrical with the left door 25L, description thereof is omitted. In addition, description of the members provided symmetrically is also omitted.

  In FIG. 7, the figure which looked at the front half of the chemical | medical agent dispersion | distribution vehicle 1 at the time of opening the left opening-and-closing door 25L from diagonally upper left is shown. FIG. 8 is a partial plan view of the left open / close door 25L as viewed from above, and FIG. 10 is a partial plan view of the left open / close door 25L as viewed from above. FIG.

  As shown in FIGS. 6, 8, and 10, a left holder 26 </ b> L that holds the left open / close door 25 </ b> L when opened is provided at the left end of the front surface of the cabin 20. Specifically, the left front projecting arm 27L facing forward is fixed to the upper portion of the left first front frame 21a by welding, and the left holder 26L is attached to the left front projecting arm 27L with a screw. Yes. The left holder 26L has a configuration of a leaf spring that is sandwiched from above and below, and the left open door 25L is opened by a rod-shaped left striker 29L that is welded to the left open door 25L by being sandwiched between the left holder 26L. Held in a state.

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

  As shown in FIG. 11, a U-shaped left door frame 34 </ b> L is attached to a plurality of portions that are important points of the left opening / closing door 25 </ b> L. The left door frame 34L is attached by making a hole in the glass portion 25g of the left open / close door 25L and fixing with a screw. The left opening / closing door 25L and the cabin main body side 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 configured as follows.

  The left door frame 34L has a U-shape and includes an upper part 34Lu, a front side part 34Lf, and a lower side part 34Ld. An upper first fulcrum 34a is provided in the upper portion 34Lu, an upper second fulcrum 34b is provided in the upper part of the left second frame 21d, and the upper first fulcrum 34a and the upper second fulcrum 34b are connected to the upper opening / closing arm. 31 is connected.

  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 by a lower first fulcrum 34a and a lower second fulcrum 34b.

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

  The upper and lower open / close arms 31, 31 are bent in a J-shape, and when the left open / close door 25L is opened, the upper and lower open / close arms 31, 31 bypass the outside of the left second frame 21d. Thus, the second fulcrum 34b, 34b rotates around the axis.

  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 open / close track of the left open / close door 25L. That is, since the pin 25a supported and fixed to the upper end of the opening / closing door 25 is always fitted in the guide groove 32a, when the left opening / closing door 25L moves to the open side, the curved guide groove 32a of the guide plate 32 is formed. The opening / closing door 25 moves along and is opened up to the position shown in FIGS.

  Further, as shown in FIG. 11, since the striker 29L provided on the left door frame 34L, the upper opening / closing arm 31 and the rotation fulcrum 34a of the left door frame 34L are provided with a gap in the vertical direction, the striker 29L is provided. There is no possibility that a finger is caught between the upper and lower open / close arms 31.

  While the left open / close door 25L shown in FIG. 8 moves to the open state shown in FIGS. 7 and 10, the left open / close door 25L does not interfere with surrounding members. The left opening / closing door 25L moves greatly to the left front of the cabin 20, so that 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 40L and the cabin 20 main body.

  Further, as a feature of this configuration, the state shown in FIG. 9 is obtained between the closed state shown in FIG. 8 and the open state shown in FIG. The state shown in FIG. 9 is a state translated from the state of FIG. That is, the left open / close door 25L translates forward while moving toward the outside of the cabin 20. Thereafter, as shown in FIG. 10, the front side of the left open / close door 25 </ b> L moves forward while rotating and moving toward the cabin main body.

  Further, as shown in the perspective view of the upper left front part of the cabin 20 in FIGS. 12 and 6, a left side rearview mirror 35 </ b> L capable of monitoring the rear of the aircraft is disposed at the upper front part of the left outer side of the cabin 20. The left side rearview mirror 35 is fixedly supported by a left support plate 36L disposed above the side surface of the cabin 20. The left support plate 36L is attached to the left front projecting arm 27L with a bolt. Further, the through hole 36a of the left front projecting arm 27L can be used as one hole for lifting the cabin. Since the right side rearview mirror 35R has a symmetric configuration, description thereof is omitted.

  Note that the left side rearview mirror 35L and the right side rearview mirror 35R may be attached to the upper part of the front frame of the left and right open / close doors 25L and 25R or the upper and lower middle parts via a mirror attachment arm. Then, the rear can be seen from the cabin 20 even when the open / close doors 25L and 25R are opened.

  FIG. 13 shows a view of the right open / close door 25R viewed from the inside of the cabin by cutting the cabin. The right door 25R is provided with a front locking knob 42 and a rear locking knob 43.

  Further, as in the configuration example shown in the perspective view of the left open / close door 25L in FIG. 14, by providing the connecting frame 44 that connects the upper and lower open / close arms 31, 31, the left open / close door 25L can be opened and closed stably. It can be carried out. However, the left opening / closing door 25L can be opened / closed more stably by configuring the connecting frame 44 on the opening / closing door 25L to the left of half of the longitudinal direction of the opening / closing arm 31. The connecting frame 44 can be a handle for opening and closing the left opening / closing door 25L.

  Although a specific mounting state display is omitted, a boom operation switch box 65 shown in FIG. 33 is provided near the boarding step 66L outside the left opening / closing door 25L, and the left side when the operator gets into the cabin 20 is provided. The boom 40b is raised so as not to get in the way. The boom operation switch box 65 is provided with a lift switch 65a and an open / close switch 65b, and the side boom 40b is lifted and lowered by the lift switch 65a, and the side boom 40b is horizontally opened and closed by the open / close switch 65b.

  If the boom operation switch box 65 is provided outside the right opening / closing door 25R, it is easy to get into the cabin 20 from the right side. However, if the boom operation switch box 65 is provided on each side, the cabin 20 can be viewed from either the left or right side. Getting into is easier.

  FIG. 15 is a perspective view of the cabin 20 as viewed from the right rear. A compressor 47 for air conditioning of the cabin 20 is attached to the lower left rear portion of the cabin 20. Specifically, it is below the driver seat 4. Further, the capacitor 48 is disposed on the right rear upper side of the cabin 20. As described above, the air conditioner main body 100 that generates cooling air is disposed in the front part of the ceiling of the cabin 20 and is covered with the cabin roof 22 that covers the upper part of the cabin 20.

  Thus, by completing the refrigerant circulation system only on the cabin 20 side, the cabin 20 can be easily attached to and detached from the traveling vehicle body 2. Furthermore, since the path | route through which a refrigerant | coolant flows becomes short, a hose becomes short and can reduce the amount of refrigerant | coolants. Further, the hose arrangement from the air conditioner main body 100 to the compressor 47 can be passed through the left first front frame 21a, and the hose arrangement from the condenser 48 to the air conditioner main body 100 is performed on the right upper frame. Since the inside of 21c can be passed, arrangement becomes easy.

  FIG. 16 shows a perspective view of the housing of the cabin 20 adjacent to the upper front side of the medicine tank 30 as viewed from the right front. A condenser 48 for air conditioning of the cabin 20 is arranged on the upper right rear side of the cabin 20. A guard 49 is provided outside the condenser 48 in order to prevent the control boom from interfering.

  FIG. 17 is a perspective view of the cabin frame 21 of the cabin 20 as viewed from the left front. In FIG. 17, the description of the left first front frame 21a is omitted. With the right open / close door 25R closed, the air-conditioning refrigerant is cooled and liquefied between the right third frame 21e and the right fourth frame 21b in the upper rear part of the right open / close door 25R. A capacitor plate 63 for attaching the capacitor 48 to be attached is attached, and electrical components used for the capacitor 48 and the like are arranged on the capacitor plate 63.

  FIG. 18 is a perspective view of the cabin 20 viewed from the left front. The guard 49 is arranged on the upper left side of the cabin 20, so that the control boom 40 b can be prevented from hitting the cabin 20 in the case of erroneous operation.

  FIG. 20 shows a perspective view of the cabin 20 as viewed from the right front. A capacitor 48 and a guard 49 are disposed on the upper right side wall of the casing of the cabin 20, and a capacitor fan 53 is disposed in the center of the capacitor 48.

  FIG. 22 shows the receiver dryer 55. As shown in FIG. 21, by opening the rear glass 57 of the cabin 20, it is possible to check the refrigerant gas amount of the air conditioner indicated by the liquid eye 55 a of the receiver dryer 55. Reference numeral 48 in FIG. 22 denotes a capacitor, and the capacitor 48 and the receiver dryer 55 are viewed from the inside (cabin side).

  FIG. 21 shows a perspective view of the main part as seen from the left rear of the cabin 20. Since the receiver dryer 55 is offset from the rear surface of the right fourth frame 21b, the inside of the capacitor cover 60 is opened, and the rear glass 57 of the cabin 20 is opened, so that the liquid eye on the upper portion of the receiver dryer 55 is opened. By looking at 55a, it becomes easy to confirm the refrigerant gas amount.

  FIG. 19 is a perspective view of a capacitor 48 and a guard 49 arranged on the upper right side wall of the casing of the cabin 20. A hole 60d for sucking outside air and for dust removal on the front surface of the capacitor is provided on the lower surface of the capacitor cover 60. By providing the dust-removing hole 60d on the lower surface of the capacitor cover 60, the hole 60d is not only difficult to see from the outside, but also can be used as a hole for removing dust and the like adhering to the exhaust of the capacitor fan 53. .

  FIG. 23 shows a perspective view of the main part as seen from the left rear of the cabin 20. A tank lid 30 a is provided on the upper surface of the medicine tank 30. Therefore, as shown in the figure, the operator or the like can easily monitor the inside of the medicine tank 30 or determine whether or not the medicine needs to be replenished with the rear glass 57 of the cabin 20 opened.

  Next, the attachment / detachment configuration of the medicine tank 30 will be described. FIG. 24 is a plan view of the state where the medicine tank 30 is removed, FIG. 25 is a view of the cabin 20 with the medicine tank 30 removed as viewed from the lower right rear side, and FIG. 26 is a state where the medicine tank 30 is removed. FIG. 27 shows a view of the cabin 20 with the medicine tank 30 removed, as viewed from the rear.

  As shown in FIG. 25, slightly above the lower ends of the left and right fourth frames 21b and 21b described above are connected by a rear connecting frame 21h, and a partition wall 200 is provided below the rear connecting frame 21h. . Although this partition wall 200 has a concavo-convex portion and has a complicated shape, many portions of the partition wall 200 face the drug tank 30.

  As shown in FIG. 24, the medicine tank 30 has a concave shape in plan view. When the medicine tank 30 is mounted, the convex portion 200 h of the partition wall 200 is positioned in the recessed portion 30 h of the medicine tank 30. Further, a protrusion 30t is formed on the right side portion of the medicine tank 30 to increase the tank capacity. Furthermore, since a spray-related control panel CP is attached to the upper surface of the protruding portion 30t, when the medicine tank 30 is attached or detached, the control panel CP is also attached or detached together. However, it is necessary to disconnect the harnesses connected to the control panel CP.

  As shown in FIG. 25, the partition wall 200 has a hole, and has a right hole 200R and a left hole 200L. A part of the medicine tank 30 is configured to enter the cabin (20). That is, the protrusion (entrance) 30t of the medicine tank 30 enters the cabin (20) through the right side hole 200R together with the control panel CP. Thereby, since the right-side hole portion 200R serves as a guide portion, the medicine tank (30) can be easily attached and detached.

  For the right hole 200R, a sponge 200S is attached to the inner periphery of the right hole 200R with an adhesive in order to maintain airtightness. That is, the protruding portion 30t of the medicine tank 30 enters and exits the cabin 20 while contacting the sponge 200S. Accordingly, maintenance of the control panel CP together with the removed medicine tank 30 can be easily performed. Also, during operations that do not use the drug tank 30, such as plowing work or middle tilling work where a rotary or the like is provided at the rear of the machine body, by removing the drug tank 30, the control panel CP related to drug spraying can also be removed, preventing erroneous operation. , Work efficiency is improved. In this case, the right hole 200R is configured to be closed with a dedicated plate.

  On the other hand, in the left hole 200L, a plate 200P made of a transparent resin material is attached with a plurality of screws. When the medicine tank 30 is mounted, a gauge portion 30g (FIG. 24) that displays the amount of the chemical solution that is long in the vertical direction comes close to the transparent plate 200P. Thereby, the remaining amount of the medicine tank 30 can be easily confirmed from the cabin 20.

  FIG. 29 shows the cabin 20 and the medicine tank 30 as viewed from the right rear. FIG. 30 shows the interior of the cabin 20 and a front cover 300f is detachable on the front side of the base 300 that supports the driver's seat 4. Has been. As shown in FIGS. 25 and 27, when the front cover 300 f is removed, maintenance of the compressor 47, other members, piping, and the like of the air conditioner can be easily performed from the cabin 20.

  As shown in FIG. 31, the fixation after the drug tank 30 is mounted on the main frame 3 is configured such that the left and right two positions below the rear part of the drug tank 30 are fixed by the left and right press plates KL and KL.

  As shown in FIG. 32, a tank detachment base 70 is detachably provided at the rear part of the main frame 3, and the medicine tank 30 is placed and moved from the traveling vehicle body 2. In this tank detachment base 70, left and right front support legs 71 and left and right rear support legs 72 are foldable and adjustable in length along the lower part of the main frame 3, and the lower casters 71a and 72a are grounded when used. . At the time of use, the medicine tank 30 is shifted and moved to the upper part of the tank removing table 70, and is moved to an arbitrary position using the casters 71a and 72a. Thereby, work efficiency improves.

2 Traveling body 6 Front wheel 7 Rear wheel 20 Cabin 30 Chemical tank 40 Control boom 48 Condenser 53 Condenser fan

Claims (3)

  A cabin (20) is provided in the front part of the traveling vehicle body (2) traveling on the front wheel (6) and the rear wheel (7), a drug tank (30) is mounted on the rear part, and provided in the front part of the cabin (20). A self-propelled control machine capable of switching between a control work posture in which a control boom (40) is extended to the left and right and a storage posture along the left and right sides of the traveling vehicle body (2). A self-propelled pest control machine characterized in that a condenser (48) is disposed on the rear upper side of the cabin (20) to air-condition the cabin (20).   The self-propelled pest control machine according to claim 1, wherein a front portion of the medicine tank (30) is swelled to a position below the condenser (48).   The self-propelled pest control machine according to claim 1 or 2, wherein a drive motor of a condenser fan (53) for blowing air to cool the condenser (48) is an electric variable motor.

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