JP2016220558A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a structure of a simple cabin of a working vehicle to make a space atmosphere of the inside of the cabin excellent.SOLUTION: A simple type cabin is constituted of a cabin frame forming a skelton, a front side window frame where a windshield is fit, a front side roof frame which covers a front side ceiling part of the cabin and where a colored flexible sheet is attached, and a transparent flexible sheet which covers both right and left surfaces of the cabin and a rear side surface. The cabin frame of a reverse L-shape in a side view and the front side window frame which is quadrilateral in a front view and where the windshield is fit are connected to form a framework. The front side roof frame is mounted on the formed framework, and the transparent flexible sheet for covering both right and left surfaces of the cabin and the rear side surface is attached.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a work vehicle, and more particularly to a simplified cabin of a work vehicle.

  In the chemical spraying machine, the left and right sides of the cockpit are formed by aluminum frames consisting of front and rear sides and upper and lower sides, and the front and rear sides of the left and right aluminum frames are connected by iron frames, respectively. The aluminum frame is constructed so that a transparent flexible sheet is attached to cover the left and right sides of the cockpit, and the transparent flexible sheet can be opened and closed by opening and closing with a fastener. A simplified cabin is known that has a structure in which a roof is fixed to a vehicle and is mounted with a chemical tank formed in a U shape in plan view so as to surround the rear side and the left and right sides of the cockpit (Patent Document 1).

Japanese Patent No. 4635378

  In the prior art, the cabin frame is composed of a left and right aluminum frame, and the left and right iron frames are composed of a front upper frame, a front lower frame, and a rear frame. A frame is configured by connecting frames, and a transparent flexible sheet, a windshield, and a roof are attached to the frame configuration.

  The present invention simplifies the cabin frame by constructing a cabin frame with a reverse L-shaped cabin frame and a front window frame to which a windshield is attached, and attaching a transparent flexible sheet and roof to the cabin frame. The rear roof is attached to the front roof so that it can be opened, and the windshield can be opened to the front so that the cabin atmosphere is good and the engine in the front side of the aircraft is easily inspected. To do.

  In order to solve the above problems, the present invention has taken the following technical means.

  According to the first aspect of the present invention, the traveling vehicle body (2) is provided with an engine (E), a steering handle (7), and a cockpit (6) covered sequentially with a bonnet (5) from the front side to the rear side. And a chemical tank (9) that surrounds the left and right sides and the rear side of the cockpit (6), and includes a simplified cabin (25) so as to surround the operating unit, the simplified cabin (25 ), A cabin frame (26) forming a skeleton, a front window frame (27) fitted with a windshield (27c), and a colored flexible sheet covering the front ceiling portion of the cabin and attached. The front roof frame (28) and a transparent flexible sheet that covers both the left and right sides and the rear side of the cabin, and the cabin frame (26) extends in the front-rear direction above the center in the left-right direction of the fuselage. The upper frame (26a) to be arranged and the rear frame (26b) arranged along the vertical direction at the center in the left-right direction of the rear side of the fuselage are configured in an inverted L shape in side view, and the rear frame (26b ) Is attached to the lateral center of the rear side of the traveling vehicle body (2), and the front window frame (27) is a rectangular front upper window frame (27a) fitted with a windshield (27c). ) And left and right lower frames (27b) that extend downward from the rear of the bonnet (5) at the lower left and right sides of the upper front window frame (27a), and the left and right lower frames (27b, 27b). ) Are attached to the left and right sides of the front side of the traveling vehicle body (2), the upper left and right central parts of the upper front window frame (27a) are connected to the front end of the upper frame (26a), and the front roof frame A work vehicle, characterized in that the side roof frame (29) after mounted the colored flexible sheet on the side provided to be extended after 28).

  According to a second aspect of the present invention, in the first aspect of the invention, the windshield (27c) of the upper front window frame (27a) is configured to be rotatable about an axis in the left-right direction of the upper part or the lower part. A work vehicle characterized in that the lower side or upper side of the glass (27c) can be opened forward.

  According to a third aspect of the present invention, in the second aspect of the present invention, the upper portion of the windshield (27c) of the upper front window frame (27a) is configured to be rotatable about a left-right axis, and the windshield (27c) Is a work vehicle that is configured to be openable forward and upward.

  According to the first aspect of the present invention, the simplified cabin is framed by the upper frame (26a), the rear frame (26b) and the front window frame (27) which are reverse L-shaped when viewed from the side. Since the roof frame (28, 29) to which the seat is attached and the transparent flexible sheet covering the left and right sides and the rear side of the cabin are attached, the configuration can be simplified and the cost can be reduced. In addition, when only the front roof frame (28) to which the colored flexible sheet is attached is attached, the outside air can be circulated to the rear side of the cabin so that the operator can perform an inspection operation from the inside of the cabin to the rear. It is possible to easily check the working state. If the rear roof frame (29) is connected to the front roof frame (28) and attached, the influence of direct sunlight and light rain can be reduced, and the driving space can be made comfortable.

  According to the second aspect of the present invention, the windshield (27c) of the upper front window frame (27a) is configured to be openable about the left or right axis of the upper part or the lower part. The glass (27c) is opened forward, the bonnet (5) is opened, and the engine (E) can be easily inspected.

  According to the invention of claim 3, the upper part of the windshield (27c) of the upper front window frame (27a) is configured to be pivotable about the left and right axis, and the windshield (27c) is pivoted to open upward and forward. Since it is configured so that the operator can sit in the cabin, the operator can lean on the upper body forward and easily check the engine (E) in the hood (5).

A side view of a chemical spraying machine. The top view of a chemical | medical solution spraying work machine. The front view of a chemical spraying work machine. The side view of the chemical | medical solution spraying work machine which attached the simple type cabin. The top view of the chemical | medical solution spraying work machine which attached the simple type cabin. The front view of the chemical | medical solution spraying work machine which attached the simple type cabin. The side view of the front side part of a chemical | medical solution spraying work machine. The side view of a chemical | medical solution spraying work machine, the front view of a switch. The front view and top view of the front side part of a chemical | medical solution spraying work machine. The front view and top view of the front side part of a liquid spreading operation machine. The front view and top view of the front side part of a liquid spreading operation machine. The top view of the front side part of a chemical | medical solution spraying work machine.

  Hereinafter, a chemical solution spraying working machine according to an embodiment will be described with reference to the drawings.

  First, the whole structure of the chemical | medical solution spraying work machine 1 provided with this invention is demonstrated based on FIGS. In addition, it has described as right and left and front and back on the basis of the advancing direction of a working machine.

  The traveling vehicle body 2 of the chemical spraying work machine 1 is provided with a pair of left and right front wheels 3 and 3 and rear wheels 4 and 4, and a control spraying device 11 is attached to the front side portion of the traveling vehicle body 2.

  In addition, as shown in FIG. 9, the chemical | medical solution spraying work machine 1 of this embodiment makes the minimum ground clearance high, and has comprised the distance between wheels (tread) widely.

  An engine E covered with a bonnet 5 is mounted above the left and right front wheels 3, 3 of the traveling vehicle body 2. A pilot seat 66 is provided above the left and right front wheels 3, 3 and the left and right rear wheels 4, 4, and a steering handle 7 is provided in front of the pilot seat 6.

  When the steering handle 7 is steered left and right, the pair of left and right front wheels 3 and 3 and rear wheels 4 and 4 are simultaneously interlocked and steered in opposite phases to each other, so that a four-wheel steering structure capable of small-turn traveling is achieved.

  Further, a chemical tank 9 is provided so as to surround the left and right sides and the rear side of the cockpit 6. As shown in FIGS. 4 and 5, the rear auxiliary frame 2a is extended from the rear part of the traveling vehicle body 2, and the chemical tank 9 is placed so as to straddle the rear upper surface of the traveling vehicle body 2 and the upper surface of the rear auxiliary frame body 2a. It is detachably attached. The control pump 10 is provided in the lower part of either one of the rear auxiliary frame bodies 2a.

  Moreover, as shown in FIGS. 1-3, the control spraying apparatus 11 is comprised by the center spraying boom 11c located in the front of the body, and the right and left spraying booms 11L and 11R attached to the left and right sides of the center spraying boom 11c. .

  The control spraying device 11 is moved up and down by a lifting cylinder 15 so that the left and right spraying booms 11L and 11R can be opened and closed by left and right opening and closing cylinders 17 and 17, and when a left and right opening and closing lever (not shown) is operated, 11R can be changed into a spraying operation state (shown in FIGS. 2 and 3) protruding independently on both the left and right sides, and a storage state (shown in FIG. 1) along both sides of the traveling vehicle body 2. ing. Reference numerals 13 and 13 denote left and right holding frames for holding the left and right spraying booms 11L and 11R in the stored state.

  The chemical solution in the chemical solution tank 9 is sent to the control spraying device 11 by the control pump 10, and the chemical solution is sprayed from a large number of spray nozzles 14 of the center spraying boom 11c and the left and right spraying booms 11L, 11R.

  In addition, a PTO shaft (not shown) is mounted on the rear portion of the traveling vehicle body 2 so as to protrude rearward, and left and right lifting arms 22 and 22 that rotate up and down about a horizontal axis are provided on the rear portion of the traveling vehicle body 2. The left and right elevating arms 22 and 22 are moved up and down by an elevating cylinder (not shown), and are configured to move up and down between a lower part of the mounting surface of the chemical tank 9 and a predetermined distance upward.

  With the chemical tank 9 removed, for example, a rotary tiller (not shown) is connected to the rear ends of the left and right lifting arms 22 and 22 so that power can be transmitted from the PTO shaft to the rotary tiller so that the tilling work can be performed. It is composed.

  Next, the simplified cabin 25 will be described with reference to FIGS.

  The simplified cabin 25 is configured to surround the cockpit 6 of the riding work machine, and includes a cabin frame 26 forming a skeleton, a front window frame 27 fitted with a windshield 27c, and a transparent flexible sheet. The front roof frame 28 to which a transparent flexible sheet is attached, the rear roof frame 29 to which a transparent flexible sheet is attached, and the transparent flexible sheet that covers both the left and right sides and the rear side of the simplified cabin 25. ing.

  The rear lower part of the flexible sheet is located between the inner surface of the chemical liquid tank 9 and the cockpit 6, and the left and right parts of the flexible sheet, such as the left and right sides, are configured to be opened and closed with a vertical fastener. Yes.

  A transparent flexible sheet that covers both the left and right sides and the rear side of the simplified cabin 25 is configured to be rewound by a winding roll provided on the upper part of the frame member, and is drawn out to be wound and stored. You may comprise.

  The cabin frame 26 is, for example, a round bar in cross section, and is integrally configured in an inverted L shape when viewed from the side by an upper frame 26a and a rear frame 26b. The upper frame 26a is arranged along the front-rear direction above the center in the left-right direction of the traveling vehicle body 2, the rear frame 26b is arranged along the up-down direction at the center in the left-right direction, and the lower end thereof is the cockpit. 6 is bolted to the cockpit frame 30 for attachment.

  The middle part in the vertical direction of the rear frame 26b is rotatably connected to the left and right axis 26c so that the rear frame 26b can be folded and stored compactly when detached from the traveling vehicle body 2.

  The front window frame 27 is composed of an upper front window frame 27a that is fitted with a windshield 27c and has a rectangular shape in front view, and left and right lower frames 27b and 27b that extend downward from the lower left and right sides of the upper front window frame 27a. It is configured. The lower ends of the left and right lower frames 27 are attached to the left and right sides of the front side of the traveling vehicle body 2, and the upper left and right center portions of the upper front window frame 27 a are attached to the front end of the cabin frame 26 to form a frame.

  The upper portions of the left and right lower frames 27b and 27b are configured to be rotatable around the left and right shafts 27d and 27d so that they can be folded and stored compactly when removed.

  An upper end portion or a lower end portion of the upper front window frame 27 is supported by a hinge that rotates about a horizontal axis so that the upper or lower portion of the upper front window frame 27a can be opened and rotated forward. The operator can easily check the engine E by opening the front bonnet 5 while in the simple cabin 25.

  The roof member is composed of a front roof frame 28 that covers the front side of the cabin ceiling and a rear roof frame 29 that covers the rear side of the cabin, and the front end of the rear roof frame 29 is attached to the rear end of the front roof frame 28. It is detachable and can be opened and closed.

  The front roof frame 28 and the rear roof frame 29 have a structure in which a colored flexible sheet is attached to a rectangular frame body in plan view, and have a function as a sun visor. Therefore, by expanding or narrowing the area of the roof, the work space can be made comfortable in response to direct sunlight and light rain.

  If the flexible sheet of the rear roof frame 29 can be wound and opened with a roll, the opening and closing operation of the rear roof frame 29 can be performed quickly.

  The front window frame 27 includes an upper front window frame 27a in which a windshield is fitted in a rectangular frame body as viewed from the front, and left and right lower frame bodies 27b and 27b extending downward from the lower left and right sides of the upper front window frame 27a. It consists of and.

  The upper or lower end of the windshield 27c fitted in the upper front window frame 27a is supported by a hinge that pivots about a horizontal axis, and the upper or lower part of the windshield 27c can be opened and rotated forward. It is configured as follows. Thus, the operator can open the bonnet 5 from the cabin and facilitate the inspection of the engine E.

  A fan 32 is attached to the front right side portion of the upper front window frame 27a in the simplified cabin 25 via a bracket so that air is blown to the operator from the right side of the front side to be cooled, and the fan 32 gets on and off from the left side of the simplified cabin 25. I try not to get in the way.

  A fan 32 may be attached to the rear side of the rear roof frame 28 of the cabin frame 26 so as to blow and cool the rear of the operator.

  A reflecting mirror 34 is attached to the upper part of the head of the operator in the sitting posture at the upper part of the rear frame 26b of the cabin frame 26 to ensure the safety of traveling on the road, the operator's rear view is good, and the chemical tank 9 is attached. The rear view is good.

  Left and right front work lights 36 and 36 are attached to the left and right sides of the upper front window frame 27a, and left and right rear work lights 38 and 38 are attached to the left and right sides of the rear roof frame 29. Have good.

  Next, the drift protection cover 42 will be described with reference to FIG.

  A support frame 41 is attached so as to protrude forward from the lateral frame 40 on the front side of the traveling vehicle body 2, and a center spraying boom 11 c of the control spraying device 11 is attached to the front end of the support frame 41 along the left-right direction. A drift protection cover 42 is attached to the rear side portion of the support frame 41 via a bracket 42a so as to be lowered rearward and inclined so as to cover the rear left and right of the center spraying boom 11c. The drift protection cover 42 is formed of a flexible plate having a length (for example, about 10 centimeters) that does not damage the crop by the spraying pressure.

  The drift protection cover 42 makes it easy to grasp the distance between the spray nozzle 14 and the top of the crop, and the spray height of the center spray boom 11c can be set appropriately. In addition, the drift prevention cover 42 can guide the sprayed chemical solution backward while pushing down the sprayed chemical solution, thereby improving the spraying efficiency and preventing the sprayed chemical solution from being applied to the operator.

  Next, FIG. 8 will be described.

  An auxiliary step 45 is provided, for example, on the left side getting on / off portion of the traveling vehicle body 2 to make it easy for the operator to get on and off. For example, a lifting switch 47 for lifting and lowering the left spraying boom 11L is provided at the lowermost part of the auxiliary step 45 so that the lifting switch 47 of the auxiliary step 45 can be lifted and lowered when the operator gets into the work implement. The lift switch 47 is connected to another power supply circuit so that it operates even when the key switch for starting the engine is not operated in the energized state.

  Thus, when the operator gets on the work machine, the operator can easily get on by operating the lifting switch 47 of the auxiliary step 45 to raise the left spraying boom 11L.

  Further, the lifting switch 47 is disposed on, for example, the lower surface of the left spraying boom 11L in the vicinity of the operator's getting-on / off position, and when the operator gets in, the lifting switch 47 is operated to raise the left spraying boom 11L. May be.

  Next, the support structure of the left and right front wheels 3, 3 will be described with reference to FIGS.

  The chemical solution spraying work machine 1 according to the present embodiment is configured to have a minimum ground clearance of, for example, 500 mm or more and a wide wheel distance (tread).

  A differential case 52 is disposed at the center of the left and right sides of the cast front axle case 51. For example, the right front axle case 51R (left side in FIGS. 9 and 10) is shortened near the left and right center of the front axle case 51, and the left front axle case 51L ( In FIG. 9 and FIG. 10, the right side) is divided into left and right so as to include the differential case 52, and the divided surfaces 51a of the left and right front axle cases 51L, 51RL, 51R are joined and fastened with bolts.

  Left and right vertical cases 53 and 53 are inclined on both the left and right sides of the left and right front axle cases 51L and 51R so as to extend to the left and right as the lower side, and left and right front wheel cases 54 and 54 are provided at the lower ends of the left and right vertical cases 53 and 53 The left and right front wheels 3, 3 are supported on the left and right front wheel cases 54, 54, and the power is transmitted from the differential case 52 via left and right front wheel transmission means (not shown) in the case. .

  A power steering cylinder 55 is disposed along the left-right direction on the front side of the left and right center part of the long left front axle case 51L, and the left and right steering rods 56, 56 of the cylinder 55 are expanded and contracted to the left and right. , 57, the left and right front wheels 3, 3 are steered.

  As shown in FIG. 10, a connecting plate 58 is bolted and reinforced on the front side surfaces of the connecting portions of the left and right front axle cases 51L and 51R. The connecting plate 58 is configured to be bent in a front view so that the left and right central portions are narrowed in the vertical direction and the left and right side portions are wide so as to bypass the lower side of the input shaft 52a of the differential case 52. Bolts are fastened at four locations on the left and right sides.

  According to the above configuration, not only the tensile strength but also the bending strength and the torsional strength of the connecting plate 58 are increased, and the strength can be maximized while the connecting plate 58 is made small and compact.

  The left and right rear wheels 4, 4 are configured in the same manner.

  Next, the mounting structure of the left and right front axle cases 51L and 51R and the power steering cylinder 55 will be described with reference to FIGS.

  For example, the right front axle case 51R is shortened at the left and right central portions of the front axle case 51, the left front axle case 51L is divided into long parts so that the differential case is included, the inner side surfaces of the left and right front axle cases 51L and 51R are joined, and the reamer bolt 59 Further, flanges 51b and 51b are formed on the mating surfaces of the left and right front axle cases 51L and 51R, and are bolted.

  A cylinder 55 for power steering is provided in the left and right center front side of the long left front axle case 51L along the left and right direction, and the cylinder 55 side of the support cylinder 60 protruding forward from the left and right center part of the left front axle case 51 The support shaft 61 protruding rearward is inserted and fitted from the front side. Then, the left and right front axle cases 51L and 51R and the cylinder are engaged and supported by a reamer bolt 59 extending in the left and right direction for connecting the left and right front axle cases 51L and 51R in the retaining groove (not shown) of the inserted support shaft 61. 55 are simultaneously tightened and connected.

  According to the above configuration, the reamer bolt 59 for connecting the left and right front axle cases 51L and 51R can be used for positioning and retaining of the cylinder 55, so that the configuration can be simplified and the cost can be reduced.

  The left and right rear wheels 4, 4 are configured in the same manner.

2 traveling vehicle body 3 front wheel 4 rear wheel 5 bonnet 6 cockpit 7 steering handle 9 chemical tank 11 control spraying device 25 simplified cabin 26 cabin frame 26a upper frame 26b rear frame 27 front window frame 27a upper front window frame 27b left and right lower frame 27c Windshield 28 Front roof frame 29 Rear roof frame E Engine

Claims (3)

  The traveling vehicle body (2) has an engine (E) covered with a bonnet (5) sequentially from the front side to the rear side, a steering handle (7), a driving section having a cockpit (6), and a cockpit (6). The working vehicle is provided with a chemical tank (9) that surrounds both the left and right sides and the rear side of the vehicle, and has a simplified cabin (25) that surrounds the operating part, and the simplified cabin (25) forms a skeleton. A cabin frame (26), a front window frame (27) in which a windshield (27c) is fitted, and a front roof frame (28) covering a front ceiling portion of the cabin and attached with a colored flexible sheet ) And a transparent flexible sheet covering both the left and right sides and the rear side of the cabin, and the upper frame is arranged so that the cabin frame (26) extends along the front-rear direction above the center in the left-right direction. The rear frame (26a) and the rear frame (26b) arranged along the vertical direction at the center of the rear side of the fuselage are formed in an inverted L shape in side view, and the rear frame (26b) A lower end portion is attached to the center of the rear side portion of the traveling vehicle body (2) in the left-right direction, and the front window frame (27) is a front upper window frame (27a) having a rectangular shape in front view in which a windshield (27c) is fitted. The left and right lower frames (27b) extending downward from the rear of the bonnet (5) at the lower left and right sides of the upper front window frame (27a), and the left and right lower frames (27b, 27b) Lower end portions are attached to the left and right sides of the front side portion of the traveling vehicle body (2), the upper left and right center portions of the upper front window frame (27a) are connected to the front end portions of the upper frame (26a), and the front roof frame (28 On the back side) A work vehicle characterized in that a rear roof frame (29) to which a colored flexible sheet is attached can be extended.   In the invention of claim 1, the windshield (27c) of the upper front window frame (27a) is configured to be rotatable about the left or right axis of the upper part or the lower part, and the lower side of the windshield (27c). A work vehicle characterized in that the upper part or the upper part can be opened forward.   In the invention of claim 2, the upper portion of the windshield (27c) of the upper front window frame (27a) is configured to be rotatable about a left-right axis so that the windshield (27c) can be opened forward and upward. A work vehicle characterized by comprising.

Images