WO2015199182A1 - Véhicule de travail - Google Patents

Véhicule de travail Download PDF

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Publication number
WO2015199182A1
WO2015199182A1 PCT/JP2015/068367 JP2015068367W WO2015199182A1 WO 2015199182 A1 WO2015199182 A1 WO 2015199182A1 JP 2015068367 W JP2015068367 W JP 2015068367W WO 2015199182 A1 WO2015199182 A1 WO 2015199182A1
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WO
WIPO (PCT)
Prior art keywords
cabin
frame
beam member
attached
roof
Prior art date
Application number
PCT/JP2015/068367
Other languages
English (en)
Japanese (ja)
Inventor
宮崎　竜一
Original Assignee
ヤンマー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ヤンマー株式会社 filed Critical ヤンマー株式会社
Priority to CN201580031542.8A priority Critical patent/CN106470876A/zh
Priority to KR1020167031441A priority patent/KR102140429B1/ko
Publication of WO2015199182A1 publication Critical patent/WO2015199182A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/06—Fixed roofs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B60Y2200/221—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/415—Wheel loaders

Definitions

  • the present invention relates to a work vehicle such as a tractor for agricultural work or a wheel loader for civil engineering work.
  • Patent Documents 1 and 2 work vehicles such as agricultural tractors have a cabin that covers a control seat on a traveling machine body (see, for example, Patent Documents 1 and 2).
  • the cabins described in Patent Documents 1 to 3 have a cabin frame constituting a framework and a roof body arranged on the upper end side of the cabin frame.
  • the cabin frame has a so-called frame structure in which a pillar (pillar) and a beam member (beam) are combined, and rigidity is secured by the pillar and the beam member.
  • a horizontally-rotating side door is provided on the left and right sides of the cabin.
  • Side doors are often made of a single piece of glass to ensure visibility. For this reason, in a work vehicle with a cabin, when an operator enters and exits the cabin, if the large side door made of single glass is closed, the air in the cabin is suddenly compressed, the cabin internal pressure increases, and the side door is Sometimes it was difficult to close.
  • This invention makes it a technical subject to provide the work vehicle which improved after examining the above present conditions.
  • a work vehicle including a cabin frame that forms a framework of a cabin that covers a control seat on a traveling machine body, and a roof body that is disposed on an upper end side of the cabin frame.
  • the sound absorbing material is divided into two chambers, a sound absorbing material is disposed on the upper surface side of the inner roof constituting the ceiling of the front chamber of the roof body, and the sound absorbing material is accommodated in the front chamber.
  • the work vehicle in the work vehicle according to the first aspect of the present invention, includes a closing plate that closes a ceiling hole formed in the inner roof, and the sound absorbing material is attached to an upper surface side of the closing plate. It is.
  • the work vehicle in the work vehicle according to the first or second aspect of the present invention, includes a side door that covers the left and right side portions of the cabin so that the left and right sides can be opened and closed.
  • releases the air in a cabin outside is provided.
  • the inside air discharge portion is attached to the lower rear portion of the cabin from the outside, and a discharge port body is provided on the lower surface side of the inside air discharge portion. is there.
  • the cabin frame includes a pair of left and right front struts, a pair of left and right rear struts, and upper end portions of the front struts.
  • the roof member is supported by the group of beam members, the rear chamber of the roof body protrudes rearward from the rear beam member, the rear chamber is supported by the rear beam member, and the air conditioner is installed in the rear chamber. Is to contain.
  • the left and right sides of the roof body are provided with tail pipes that discharge exhaust gas of an engine mounted on the traveling body to the outside.
  • An outside air intake port that communicates the rear chamber with the outside is formed on the side opposite to the tail pipe.
  • a hydraulic external take-out mechanism that supplies hydraulic oil to a work machine that is detachably attached to the traveling machine body, and the hydraulic external take-out
  • a fitting hole through which the cord-like member is inserted is formed in the clamp portion, and the fitting hole is inserted into the fitting hole through a grommet made of an elastic material.
  • the cord-like member is attached by forced fitting.
  • the interior of the roof body includes two front and rear chambers.
  • the sound absorbing material is arranged on the upper surface side of the inner roof that constitutes the ceiling of the front chamber of the roof body, and the sound absorbing material is accommodated in the front chamber, so that the noise near the upper side in the cabin Can be efficiently absorbed by the sound absorbing material.
  • the closing plate for closing the ceiling hole formed in the inner roof is provided and the sound absorbing material is adhered to the upper surface side of the closing plate, the blocking plate is attached to and detached from the inner roof.
  • the sound-absorbing material can be easily attached to or detached from the roof body simply by doing so.
  • a side door that closes the left and right sides of the cabin so as to be openable and closable. Since the portion is provided, when the side door is closed, the air in the cabin can be released from the inside air discharge portion, and the inside of the cabin can be easily maintained in a positive pressure state. As a result, the side door can be closed smoothly.
  • the inside air discharge portion is attached to the lower back portion of the cabin from the outside, and the discharge port body is provided on the lower surface side of the inside air discharge portion, so that the cabin is connected via the discharge port body. It is possible to accurately prevent rainwater and the like from entering inside.
  • the cabin frame includes a pair of left and right front struts, a pair of left and right rear struts, a front beam member connecting between the upper ends of the front struts, and an upper end of the rear struts.
  • the air conditioner can be arranged inside the roof body, and the problem of restricting the operator's front view because the air conditioner is housed in the front chamber of the roof body can be avoided.
  • the said rear chamber and the said front chamber which accommodate the said air conditioner are divided, it is easy to aim at the sealing performance of the said rear chamber. This also contributes to an improvement in workability of the air conditioner.
  • the tail pipe that discharges the exhaust gas of the engine mounted on the traveling machine body to the outside is provided on one of the left and right sides of the traveling machine body, and the side of the roof body opposite to the tail pipe is provided.
  • the outside air intake port that communicates the rear chamber with the outside is formed, it is possible to remarkably prevent the exhaust gas from the tail pipe from being taken into the outside air intake port.
  • a hydraulic external take-out mechanism that supplies hydraulic oil to a work machine that is detachably attached to the traveling machine body, a plurality of hydraulic operation levers that manually operate the hydraulic external take-out mechanism, and the hydraulic external A strip member for interlockingly connecting the take-out mechanism and each of the hydraulic operation levers, and punching and bending a cover plate attached to the cabin frame to form a clamp portion for the cord-like member on the cover plate; Since the clamp part is welded and fixed to the cabin frame, the midway part of each cord-like member can be supported by the clamp part formed on the cover body, and the cord-like members are accurately entangled with each other. Therefore, the cord-like members can be arranged in an orderly manner. It becomes easy to perform the wiring work itself of each cord-like member. Further, the cover plate can be used as a strength member of the cabin frame, and the rigidity of the cabin frame as a whole can be improved.
  • the said clamp part forms the fitting hole which penetrates the said cord-like member, and attaches the said cord-like member by the forced fitting to the said fitting hole via the grommet made from an elastic material Therefore, the cord-like member can be inserted and attached to the clamp portion in a one-touch manner, and the number of assembling steps can be reduced. Therefore, the workability of attaching the cord-like member to the clamp portion can be improved. Further, since the grommet is made of an elastic material, the sealing performance of the clamp part can be ensured reliably.
  • (A) is explanatory drawing which shows the connection structure of a front beam member, a left beam member, and a left front support
  • (b) is explanatory drawing which shows the connection structure of a front beam member, a right beam member, and a right front support
  • (A) is explanatory drawing which shows the connection structure of a rear beam member, a left beam member, and a left rear support
  • (b) is explanatory drawing which shows the connection structure of a rear beam member, a right beam member, and a right rear support
  • (A) is a side view of a base bracket
  • (b) is a rear perspective view of the base bracket. It is a left view of the cabin which shows the structure of a reinforcement frame.
  • the traveling machine body 2 of the tractor 1 in the embodiment is supported by a pair of left and right rear wheels 4 as well as a pair of left and right front wheels 3 as a traveling unit.
  • the tractor 1 is configured to travel forward and backward by driving the rear wheels 4 and the front wheels 3 with a common rail type diesel engine 5 (hereinafter simply referred to as an engine) as a power source mounted on the front portion of the traveling machine body 2.
  • a common rail type diesel engine 5 hereinafter simply referred to as an engine
  • the engine 5 is covered with a bonnet 6.
  • a cabin 7 is installed on the upper surface of the traveling machine body 2. Inside the cabin 7, a steering seat 8 and a steering handle (round handle) that moves the steering direction of the front wheel 3 to the left and right by steering. 9 are arranged. Steps 10 on which the operator gets on and off are provided at the left and right lower portions of the cabin 7.
  • a fuel tank 11 that supplies fuel to the engine 5 is provided below the bottom of the cabin 7.
  • the traveling machine body 2 includes an engine frame 14 having a front bumper 12 and a front axle case 13, and left and right machine body frames 15 detachably fixed to a rear portion of the engine frame 14.
  • a front axle 16 is rotatably protruded outward from the left and right ends of the front axle case 13.
  • the front wheels 3 are attached to the left and right ends of the front axle case 13 via the front axle 16.
  • a transmission case 17 is connected to the rear part of the body frame 15 for appropriately changing the rotational power from the engine 5 and transmitting it to the front and rear four wheels 3, 3, 4, 4.
  • a tank frame 18 having a rectangular frame plate shape in a bottom view projecting outward in the left and right directions is bolted to the lower surface sides of the left and right body frames 15 and the mission case 17.
  • the fuel tank 11 of the embodiment is divided into left and right.
  • the left and right fuel tanks 11 are distributed and mounted on the upper surface side of the left and right projecting portions of the tank frame 18.
  • the left and right rear axle cases 19 are mounted on the left and right outer surfaces of the mission case 17 so as to protrude outward.
  • Left and right rear axle cases 20 are rotatably inserted in the left and right rear axle cases 19.
  • the rear wheel 4 is attached to the mission case 17 via the rear axle 20. Upper portions of the left and right rear wheels 4 are covered with left and right rear fenders 21.
  • a hydraulic lifting mechanism 22 that lifts and lowers a work machine such as a rotary tiller is detachably attached to the rear upper surface of the mission case 17.
  • a work machine such as a rotary tiller is connected to the rear portion of the transmission case 17 via a three-point link mechanism including a pair of left and right lower links 23 and a top link 24.
  • a PTO shaft 25 for transmitting a PTO driving force to a working machine such as a rotary tiller is provided to project rearward.
  • a flywheel 26 is attached to an engine output shaft (not shown) that protrudes rearward from the rear side of the engine 5.
  • a main shaft 27 projecting rearward from the flywheel 26 and a main transmission input shaft 28 projecting forward from the front side of the transmission case 17 are connected via a power transmission shaft 29 having universal shaft joints at both ends.
  • FIG. 1, FIG. 7 and FIG. 10 In the transmission case 17, a hydraulic continuously variable transmission, a forward / reverse switching mechanism, a traveling auxiliary transmission gear mechanism, and a differential gear mechanism for rear wheels are arranged.
  • the rotational power of the engine 5 is transmitted to the main transmission input shaft 28 of the transmission case 17 via the main driving shaft 27 and the power transmission shaft 29, and is appropriately shifted by the hydraulic continuously variable transmission and the traveling auxiliary transmission gear mechanism. Then, the transmission power is transmitted to the left and right rear wheels 4 through the rear wheel differential gear mechanism.
  • the front wheel output shaft 30 projecting forward from the lower front portion of the transmission case 17 projects rearward from the front axle case 13 containing a front wheel differential gear mechanism (not shown) via a front wheel drive shaft 31.
  • a front wheel transmission shaft (not shown) is connected. Transmission power by the hydraulic continuously variable transmission and the traveling auxiliary transmission gear mechanism in the transmission case 17 is transmitted from the front wheel output shaft 30, the front wheel drive shaft 31, and the front wheel transmission shaft to the front wheel differential gear mechanism in the front axle case 13. Is transmitted to the left and right front wheels 3 via.
  • a steering column 32 is disposed in front of the control seat 8 in the cabin 7.
  • the steering column 32 is erected in a state of being embedded in the back side of the dashboard 33 disposed on the front side inside the cabin 7.
  • a steering handle 9 having a substantially round shape in plan view is attached to the upper end side of the handle shaft that protrudes upward from the upper surface of the steering column 32.
  • a one-touch lift lever 34 for forcibly moving a working machine such as a rotary tiller to the highest position or the lowest position, and a pair of left and right brake pedals 35 for braking the traveling machine body 2. And are arranged.
  • a forward / reverse switching lever 36 for switching the traveling direction of the traveling machine body 2 between forward and reverse and a power transmission clutch (not shown) are disconnected.
  • a clutch pedal 37 is provided.
  • An erroneous operation preventing body 38 (reverser guard) extending along the forward / reverse switching lever 36 is disposed on the left side of the steering column 32 and below the forward / reverse switching lever 36.
  • an erroneous operation prevention body 38 as a contact preventer below the forward / reverse switching lever 36, the operator is prevented from inadvertently contacting the forward / reverse switching lever 36 when getting on and off the tractor 1.
  • An operation display panel 39 incorporating a liquid crystal panel is provided on the upper rear side of the dashboard 33.
  • Accelerator pedal 41 for controlling the rotational speed or vehicle speed of engine 5 is arranged on the right side of steering column 32 on floor plate 40 in front of control seat 8 in cabin 7. Note that substantially the entire top surface of the floor plate 40 is formed as a flat surface.
  • Side columns 42 are arranged on both the left and right sides of the control seat 8. Between the control seat 8 and the left side column 42, the parking brake lever 43 for executing the operation of maintaining the left and right rear wheels 4 in a braking state and the traveling speed (vehicle speed) of the tractor 1 are forcibly greatly increased.
  • An ultra-low speed lever 44 (creep lever) to be reduced, a sub-shift lever 45 for switching the output range of the traveling sub-transmission gear mechanism in the transmission case 17, and a PTO shift for switching the driving speed of the PTO shaft 25
  • a lever 46 is arranged.
  • a differential lock pedal 47 for turning on / off the differential drive of the left and right rear wheels 4 is disposed below the control seat 8.
  • a reverse PTO lever 48 that performs an operation of driving the PTO shaft 25 in the reverse direction is disposed on the left rear side of the control seat 8.
  • an armrest 49 for placing the arm and elbow of the operator seated on the control seat 8 is provided.
  • the armrest 49 is configured separately from the control seat 8 and has a main transmission lever 50 that increases and decreases the traveling speed of the tractor 1 and a dial type that manually changes and adjusts the height position of a work machine such as a rotary tiller.
  • a working part position dial 51 (elevating dial) is provided.
  • the armrest 49 is configured to be able to be turned up and rotated in a plurality of stages with the rear end lower part as a fulcrum.
  • the left side column 42 includes, in order from the front side, a throttle lever 52 that sets and maintains the rotational speed of the engine 5, and a PTO clutch switch 53 that performs intermittent operation of power transmission from the PTO shaft 25 to a working machine such as a rotary tiller.
  • a plurality of hydraulic operation levers 54 (SCV levers) for switching the hydraulic external take-off valve 430 (sub-control valve, see FIG. 42) arranged on the upper surface side of the mission case 17 are arranged.
  • the hydraulic external take-off valve is for supplying and controlling hydraulic oil to another work machine such as a front loader retrofitted to the tractor 1.
  • four hydraulic operation levers 54 are arranged in accordance with the number of hydraulic external take-out valves 430 (four stations).
  • the cabin 7 that covers the control seat 8 on the traveling machine body 2 includes a cabin frame 300 that forms a framework.
  • the cabin frame 300 includes a pair of left and right front columns 301 positioned in front of the control seat 8, a pair of left and right rear columns 302 positioned behind the control seat 8, and a front beam that connects between the upper ends of the front columns 301.
  • a roof body 306 is detachably attached to the upper end side of the cabin frame 300, that is, on a rectangular frame constituted by the front beam member 303, the rear beam member 304, and the left and right side beam members 305.
  • the left and right outer end sides of the front lower plate 307 extending inward in the left and right directions are connected to the lower end side of each front support column 301.
  • a vertically long board support plate 308 that fixes and supports the dashboard 33 is connected to the left and right inner ends of the left and right front lower plate plates 307, and the board support plate 308 is erected between the left and right front columns 301.
  • a rear intermediate beam member 309 extending in parallel with the rear beam member 304 is connected between the lower ends of the left and right rear columns 302.
  • the rear intermediate beam member 309 is connected to the upper ends of a pair of left and right rear lower frames 310 extending downward. End portions in the longitudinal direction of the bottom frame 311 extending in the front-rear direction are connected to the front lower plate 307 and the lower end side of the rear lower frame 310 aligned in the front-rear direction.
  • the rear upper end side of the fender frame 312 curved so as to swell forward and upward in a side view along the shape of the rear fender 21 is connected to the lower end side of each rear post 302.
  • the front end lower side of each fender frame 312 is connected to the rear end side of the side frame 313 protruding rearward from the lower portion of the corresponding front support 301.
  • the left and right outer end sides of the front lower plate plate 307 are also connected to each side frame 313.
  • the left and right rear fenders 21 are attached to the left and right outer surfaces of each fender frame 312 and the corresponding left and right outer surfaces of the rear lower frame 310.
  • a rear cover plate 314 is attached to the rear intermediate beam member 309 and the left and right rear lower frames 310 so as to cover a region surrounded by the rear intermediate beam member 309 and the left and right rear lower frames 310.
  • a seat support plate 315 that is L-shaped in a side view is attached to the lower end side of the rear cover plate 314 and the left and right bottom frames 311.
  • the control seat 8 is disposed on the seat support plate 315.
  • the left and right fender frames 312, the rear lower frame 310, and the bottom frame 311 are attached with bulged fender inner plates 316 along the front inner surface side of the rear wheel 4. Side columns 42 are disposed on the left and right fender inner plates 316.
  • a floor plate support plate 317 is attached and supported on the left and right front lower plate plates 307, the front side of the bottom frame 311, the side frames 313, and the front end sides of the seat support plates 315.
  • the floor board 40 is disposed on the left and right floor board support plates 317.
  • the front end lower sides of the left and right fender frames 312 and the front and rear middle portions of the bottom frame 311 corresponding thereto are connected by left and right horizontally long auxiliary frames 318.
  • a windshield 321 is disposed on the front side of the cabin frame 300, that is, in a region surrounded by the left and right front columns 301, the front beam members 303, and the left and right front lower plate plates 307.
  • a rear glass 322 is disposed on the rear surface side of the cabin frame 300, that is, in a region surrounded by the left and right rear columns 302, the rear beam member 304, and the rear intermediate beam member 309.
  • Side doors 323 made of transparent glass are disposed in the left and right side surfaces of the cabin frame 300, that is, in the region surrounded by the front and rear columns 301 and 302, the side beam members 305, the fender frame 312 and the side frames 313. is doing.
  • Each side door 323 is attached to the corresponding rear column 302 via a pair of upper and lower hinges 324 so as to be opened and closed.
  • the columns 301 and 302 and the beam members 303, 304, and 305 are located on the side sides of the cabin 7 (cabin frame 300). ing. For this reason, it is possible to widen the windows on the front, rear, left and right sides of the cabin frame 300.
  • a windshield 321, a rear glass 322, and left and right side doors 323 are disposed on the front, rear, left and right side surfaces of the cabin frame 300.
  • the front portions of the left and right front lower plate plates 307 are front support bases attached to the left and right body frames 15 via front vibration isolating rubber bodies 98 as vibration isolating members. 96. Further, a base bracket 327 projecting outward in the left and right directions is provided at a connecting portion (butting portion) between the left and right rear lower frames 310 and the bottom frame 311. The left and right base brackets 327 are connected to a rear support 97 attached to the left and right rear axle cases 19 via a rear vibration isolation rubber body 99 as a vibration isolation member. Accordingly, the traveling machine body 2 supports the cabin 7 in a vibration-proof manner via the plurality of vibration-proof rubber bodies 98 and 99.
  • the cabin frame 300 is provided with various support stays 331, 335, 338, 343 for attaching the lamp member. That is, a pair of left and right front upper support stays 331 are welded and fixed to the middle part of the front beam member 303 in the longitudinal direction. Each of the front upper support stays 331 is a thin plate projecting forward and obliquely upward.
  • a front upper work lamp 333 which is an example of a lamp member, is attached to each front upper support stay 331 via a front attachment piece 332 that extends downward in the forward direction.
  • the left and right front upper stage work lights 333 illuminate the front of the tractor 1.
  • the left and right front upper work lights 333 are positioned so as to overlap the front beam member 303 in front view so as not to obstruct the operator's front view.
  • a recessed portion 334 also referred to as a bulging portion
  • each front upper stage work lamp 333 fits.
  • the base end side of the upper support stay 335 is fixed by welding.
  • a rear upper work lamp 337 which is an example of a lamp member, is attached to the front end side of each rear upper support stay 335 via a rear attachment piece 336 that extends rearward.
  • the left and right rear upper work lights 337 illuminate the rear of the tractor 1 (work machine, etc.).
  • the base end side of the front middle support stay 338 is fixed by welding to the middle part of the upper and lower front struts 301.
  • a front composite lamp 339 and a front / middle work lamp 340 which are examples of lamp members, are attached to the front end side of each front / middle support stay 338.
  • Each front middle support stay 338 is laterally outward facing away from both the front beam member 303 and the left and right side beam members 305 in plan view so that the front composite light 339 and the front middle work light 340 do not obstruct the front view of the operator. Projecting forward and curved so as to extend forward from the midway part in the longitudinal direction.
  • the front composite light 339 indicates the intention of the vehicle and the person in front of the tractor 1 such as the vehicle width and left-right rotation of the tractor 1, and the front composite light 339 according to the embodiment includes a direction indicator light and a vehicle width. It consists of lights.
  • the left and right front middle stage work lights 340 illuminate the front of the tractor 1.
  • a vertical mounting bracket 341 is provided on the front end side of each front middle support stay 338, and a front composite lamp 339 is attached to the front side of the mounting bracket 341.
  • a front middle work lamp 340 is attached to the upper end side of the attachment bracket 341.
  • side mirrors 342 are attached via mirror stays 341 above the front and middle support stays in the left and right front columns 301.
  • the mirror stay 341 also extends forward in the left and right directions away from both the front beam member 303 and the left and right side beam members 305 in a plan view so as not to disturb the operator's front view.
  • the front side of the rear lower support stay 343 in the vertical direction is welded and fixed to the lower part of the left and right rear struts 302.
  • a rear composite lamp 344 and a rear lower stage work lamp 345 which are examples of lamp members, are attached to the rear side of each rear lower stage support stay 343.
  • Each rear lower support stay 343 projects outward from the left and right rear struts 302 in the rear view so that the rear composite lamp 344 and the rear lower work lamp 345 do not obstruct the operator's rear view.
  • the rear composite light 344 indicates the intention of the vehicle or person behind the tractor 1 to decelerate, stop, reverse, rotate left and right, and the like. It consists of a light, a reverse light, and a direction indicator light.
  • the left and right rear lower work lamps 345 illuminate the left and right sides of the tractor 1.
  • the rear composite lamp 344 is attached to the front side of each rear lower support stay 343.
  • a rear lower work lamp 345 is attached to the upper end side of the rear lower support stay 343.
  • the front composite lamp 339 and the rear composite lamp are set at approximately the same vertical height.
  • the cabin frame 300 is formed in a hollow shape, and the inside of the hollow shape is configured as a wiring passage for inserting cables. Then, cables are pulled out from the notches (not shown) formed in the support columns 301, 302, the beam members 303, 304 and the support stay, and the cables are connected to the lamp members 333, 337, 339, 340, 344, 345. is doing.
  • the cabin 7 is provided that covers the control seat 8 on the traveling machine body 2, and the cabin 7 includes a cabin frame 300 that forms a skeleton, and the cabin frame 300.
  • the work vehicle 1 having the roof body 306 arranged on the upper end side, support stays 331, 335, 338, 343 for attaching the lamp members 333, 337, 339, 340, 344, 345 are provided in the cabin frame 300.
  • the lamp members 333, 337, 339, 340, 344, and 345 can be directly attached to the cabin frame 300. For this reason, it contributes to the assembly workability
  • the cabin frame 300 includes a pair of left and right front struts 301, a pair of left and right rear struts 302, a front beam member 303 connecting between the upper ends of the front struts 301, and an upper end of the rear struts 302.
  • a rear beam member 304 that connects the front beam 301 and a side beam member 305 that connects the upper ends of the front column 301 and the rear column 302 that are arranged in the front-rear direction.
  • a front composite lamp 339 and a front middle work lamp 340 as the lamp members are attached to the support stay 338, and a rear composite lamp 344 as the lamp member and the support stay 343 provided at the lower part of each rear column 302 Since the rear lower stage work lamp 345 is attached, the front composite lamp 339 and the front middle stage work lamp 340 can be attached together on the support stays 338 on the front struts 301 side.
  • the support stay 343 of the rear struts 302 side can mounted together rear composite lamp 344 and rear lower working light 345. That is, the support stays 338 and 343 can be used as support members for the plurality of lamp members 339, 340, 344, and 345, thereby contributing to a reduction in the number of parts.
  • the handling of cables for the plurality of lamp members 339, 340, 344, and 345 can be simplified. It is easy to secure the front / rear and left / right visibility from within the cabin 7.
  • the cabin 7 is provided that covers the control seat 8 on the traveling machine body 2, and the cabin 7 includes a cabin frame 300 that forms a skeleton, and the cabin frame 300.
  • the cabin frame 300 connects the pair of left and right front columns 301, the pair of left and right rear columns 302, and the upper ends of the front columns 301 to each other.
  • a front upper work lamp 333 is attached to a pair of left and right support stays 331 provided in the middle of the longitudinal direction of the front beam member 303, Since the rear upper work lamp 337 is attached to the support stay 335 provided on the end side, the front upper work lamp 333 can be directly attached to the front beam member 303, and the rear upper work lamp is attached to the rear beam member 304. 337 can be attached directly. For this reason, it contributes to the assembly workability
  • the assembling work of the roof body 306 with respect to the cabin frame 300 can be simplified. This also contributes to improving the assembly workability on the production line.
  • each front upper work lamp 333 may block the front view of the operator seated on the control seat 8. Can be significantly reduced, and the operator's front view can be secured well.
  • Step 10 of the embodiment includes a plurality of tread plate step portions 351 (two steps in the embodiment), and front and rear side plate portions 352 and 353 connected to these tread plate step portions 351.
  • the plurality of tread plate step portions 351 are shifted from each other in the front-rear direction so as to move away from the rear wheel 4 as going downward.
  • the lower step tread step 351 is displaced forward from the upper step tread step 351.
  • the front side plate portion 352 is formed in a substantially L shape in front view.
  • the upper end side of the vertically long portion 354 in the front plate portion 352 is bolted to a bracket piece 355 that is welded and fixed to the lower end side of each front column 301.
  • the front end side of the upper stepped plate step portion 351 is fixed to a vertically halfway portion of the vertically long portion 354 in the front side plate portion 352.
  • the front end side of the lower tread plate step portion 351 is fixed to the lower end horizontal portion 356 of the front plate portion 352.
  • the lower end horizontal part 356 of the front side plate part 352 projects forward from the vertically long part.
  • the upper end side of the rear plate portion 353 is bolted to an auxiliary frame 318 that connects the left and right fender frames 312 and the bottom frame 311.
  • the rear end side of the upper step plate step portion 351 is fixed to the upper and lower middle portions of the rear plate portion 353.
  • the rear end side of the lower tread plate step portion 351 is fixed to the lower end side of the rear plate portion 353.
  • the rear side plate portion 353 is inclined forward and downward and is further bent forward in the vicinity of the upper and lower middle portions.
  • the lateral width of the rear side plate portion 353 is set wider than the lateral width of the front side plate portion 352 (vertically long portion 354). If comprised in this way, when an operator puts a foot on each step board step part 351, presence of the front side board part 352 (vertically long part 354) does not become obstructive, and it contributes to the boarding / alighting improvement of the cabin 7 also in this point. Moreover, since the rear side plate part 353 is wide, mud splashing of the rear wheel 4 can be effectively suppressed by the presence of the rear side plate part 353.
  • the traveling machine body 2 on which the engine 5 is mounted a pair of left and right front wheels 3 and rear wheels 4 that support the traveling machine body 2, and the traveling machine body 2.
  • a work vehicle 1 that includes a cabin 7 that covers a certain control seat 8 and a step 10 for getting in and out of the cabin 7, the left and right sides of the cabin 7 are positioned between the front wheel 3 and the rear wheel 4 that are lined up and down.
  • the step 10 is suspended and provided, and the step 10 includes a plurality of step plate step portions 351 and front and rear side plate portions 352 and 353 connected to the step plate step portions 351.
  • the plurality of tread plate step portions 351 are shifted in the front-rear direction so as to move away from the rear wheel 4 as they go down, so that the front steps along the flow line of the operator toward the inside and outside of the cabin 7 are moved forward. Will be located each step board stepped portion 351, it can be significantly improved passenger of the said cabin 7.
  • the width in the left-right direction of the rear side plate portion 353 is set wider than the width in the left-right direction of the front side plate portion 352 (vertically long portion 354), when the operator puts his / her foot on each step plate step portion 351 Further, the presence of the front side plate portion 352 does not get in the way, and this also contributes to an improvement in getting on and off the cabin 7. Moreover, since the said rear side board part 353 is wide, mud splash of the said rear wheel 4 can be suppressed effectively by the presence of the said rear side board part 353.
  • the roof body 306 attached to the upper end side of the cabin frame 301 includes an outer roof 361 that is an exterior, an inner roof 362 that forms the ceiling of the cabin 7, and a rear cover 363 that protrudes rearward from the rear beam member 304. Yes.
  • the inside of the roof body 306 is configured to be hollow. Therefore, the rear side of the outer roof 361 also extends rearward from the rear beam member 304.
  • a recess 334 (bulging portion) into which each front upper work lamp 333 is fitted is formed on the front side of the outer roof 361.
  • the interior of the roof body 306 is partitioned into two front and rear chambers by an inner roof 362 and a rear cover 363.
  • the space on the inner roof 362 side corresponds to the front chamber, and the space on the rear cover 363 side corresponds to the rear chamber.
  • An air conditioner 364 that manages the air conditioning in the cabin 7 is accommodated in the rear chamber side (rear cover 363 side) inside the roof body 306.
  • the air conditioner 364 adjusts the air conditioning (room temperature) in the cabin 7 by heating using the cooling water of the engine 5 and cooling using a compressor, a condenser, an evaporator, and the like driven by the engine.
  • the air conditioner 364 By disposing the air conditioner 364 on the rear cover 363 side protruding rearward from the rear beam member 304, the overall height of the cabin 7 is prevented from becoming higher than necessary.
  • the embodiment by providing the rear upper stage support stay 335 on the upper end side of each rear column 302 instead of the rear beam member 304, while ensuring a good rear view of the operator, between the left and right rear upper stage support stays 335.
  • an arrangement space on the rear side of the roof body 306 an arrangement space for the rear cover 363 that houses the air conditioner 364) is secured.
  • the rear cover 363 is connected to the rear beam member 304 of the cabin frame 300. Therefore, the rear cover 363 and the air conditioner 364 are supported by the rear beam member 304 of the cabin frame 300.
  • a sealing material 365 is attached to the peripheral edge of the rear cover 363. In a state where the outer roof 361 is placed on the inner roof 362 and the rear cover 363, the sealing material 365 is in close contact with the inner surface side of the outer roof 361, and the rear chamber side (rear cover 363 side) inside the roof body 306 is hermetically sealed. It becomes a shape.
  • the left and right sides of the outer roof 361 are inclined so as to be cut obliquely downward toward the left and right inner sides.
  • the side opposite to the tail pipe 229 that discharges the exhaust gas of the engine 5 to the outside is the rear chamber side (rear cover) inside the roof body 306. 363 side) is connected to the outside, and an outside air intake port 366 is formed.
  • the tail pipe 229 is erected so as to extend from the lower side to the upper side on the right front side of the cabin 7 (extends along the right front column 301).
  • the outside air intake port 366 is formed on the rear side of the left side portion of the outer roof 361 (the portion corresponding to the rear cover 363).
  • the outside air intake port 366 faces the air conditioner 364 in the rear cover 363 from the left side through a communication port (not shown) formed in the left wall portion of the rear cover 363.
  • a lattice-shaped ventilation frame body 367 is attached to the outside air intake port 366.
  • a dust filter is attached to the communication port formed in the left side wall of the rear cover 363.
  • an inside air intake port 368 that connects the inside of the rear cover 363 and the cabin 7 is formed on the control seat 8.
  • a lattice-shaped ventilation frame body 369 is attached to the inside air intake port 368.
  • an inside / outside air switching shutter plate 370 for opening and closing a communication port formed in the left side wall portion of the rear cover 363 is disposed.
  • the inside / outside air switching shutter plate 370 is configured to be opened and closed by driving an actuator 371.
  • the inside / outside air switching shutter plate 370 is moved to open, the communication port of the rear cover 363 is opened, and the air conditioner 364 in the rear cover 363 is driven to communicate with the outside through the communication port from the outside air intake port 366 into the rear cover 363. Air is guided.
  • the communication port of the rear cover 363 is closed and external air does not enter from the outside air inlet 366, and the air conditioner 364 is driven to drive the inside of the rear cover 363 from the inside air inlet 368.
  • the air in the cabin 7 is guided to the inside.
  • the ratio of the outside air and the inside air guided to the air conditioner 364 in the rear cover 363 can be adjusted by the opening degree (opening / closing degree) of the inside / outside air switching shutter plate 370.
  • the adjustment air discharge port 372 formed on the front surface side of the air conditioner 364 has a bifurcated air conditioning duct in plan view that guides the adjustment air from the rear chamber side (rear cover 363 side) to the front chamber side (inner roof 362 side).
  • the upstream side of 373 is connected.
  • the upstream side of the air conditioning duct 373 is located above the inside air intake port 368 and passes through the front surface side of the rear cover 363 and the rear surface side of the inner roof 362 and branches into a bifurcated right and left.
  • the bifurcated duct portion 374 of the air conditioning duct 373 extends in a rectangular shape in plan view along a rectangular frame formed by the front beam member 303, the rear beam member 304, and the left and right side beam members 305.
  • An adjustment shutter plate 376 that adjusts the communication state between the air conditioning duct 375 provided on the left and right sides of the inner roof 362 and the duct portion 374 is disposed in the middle of each duct portion 374 of the air conditioning duct 373.
  • the left and right adjustment shutter plates 376 are configured to rotate in conjunction with each other by an actuator 377 and a push-pull wire 378.
  • each duct portion 374 of the air conditioning duct 373 communicates with a defrosting outlet 379 provided at the front portion of the inner roof 362.
  • Each of the outlets 375 and 379 is provided with fins (not shown) for changing and adjusting the amount and direction of the adjusted air from the air conditioner 364.
  • the adjusted air from the air conditioner 364 is supplied to the right and left air conditioning outlets. It blows out into the cabin 7 only from 375.
  • the adjusted air from the air conditioner 364 is blown into the cabin 7 only from the left and right defrosting outlets 379. According to the rotation angle of both the left and right adjustment shutter plates 376, the air volume of the adjustment air from the air conditioning outlet 375 and the air volume of the adjustment air from the fog removal outlet 379 can be adjusted.
  • a sound absorbing material 444 is arranged on the upper surface side of the inner roof 362 constituting the ceiling of the front chamber of the roof body 306.
  • a sound absorbing material 444 is accommodated in the inner roof 362.
  • the sound absorbing material 444 of the embodiment is made of, for example, foamed urethane, soft urethane, gypsum board, glass wool, or the like.
  • a ceiling hole 445 is formed in the inner roof 362.
  • a closing plate 446 that closes the ceiling hole 445 is detachably attached to a location of the ceiling hole 445 of the inner roof 362.
  • a sound absorbing material 444 is attached to the upper surface side of the closing plate 446 with an adhesive or the like.
  • the cabin 7 covers the control seat 8 on the traveling body 2, and the cabin 7 has a framework.
  • a tail pipe 135 for releasing exhaust gas of the engine 5 mounted on the traveling machine body 2 to the outside is provided in a work vehicle 1 having a cabin frame 300 and a roof body 306 disposed on the upper end side of the cabin frame 300.
  • the roof body 306 is divided into two front and rear chambers on the left and right sides of the traveling machine body 2, the air conditioner 364 is accommodated on the rear chamber 363 side, and the tail pipe 229 of the right and left side parts of the roof body 306 is accommodated. Since the outside air intake 366 for communicating the rear chamber 363 with the outside is formed on the opposite side to the outside, the exhaust gas from the tail pipe 229 is supplied to the outside air intake 36. Fear can be significantly prevented the capture to.
  • the cabin frame 300 includes a pair of left and right front struts 301, a pair of left and right rear struts 302, a front beam member 303 connecting between the upper ends of the front struts 301, and an upper end of the rear struts 302.
  • a rear beam member 304 that connects the front beam 301 and a side beam member 305 that connects the upper ends of the front column 301 and the rear column 302 arranged in the front-rear direction, and the rear chamber 363 of the roof body 306 is connected to the rear beam.
  • the air conditioner 364 can be disposed inside the roof body 306 without increasing the overall height of the cabin 7, and the air conditioner 364 is accommodated in the front chamber 362 of the roof body 306. You can avoid the problem of limiting the forward view of the operator. Further, by attaching the rear upper work lamp 337 to the support stay 335 provided on the upper end side of each rear column 302, the arrangement space on the rear chamber 363 side of the roof body 306 is reduced for the rear upper work lamps 337. While being able to form between the support stays 335, the operator's back view can also be ensured favorable. Further, since the rear chamber 363 that houses the air conditioner 364 is partitioned from the front chamber 362, it is easy to improve the sealing performance of the rear chamber 363. This also contributes to an improvement in workability of the air conditioner 364.
  • the cabin frame 300 constituting the framework of the cabin 7 that covers the control seat 8 on the traveling body 2 and the roof body 306 disposed on the upper end side of the cabin frame 300.
  • the roof body 306 is divided into two front and rear chambers, and a sound absorbing material 444 is disposed on the upper surface side of the inner roof 362 constituting the ceiling of the front chamber of the roof body 306. Since the sound absorbing material 444 is accommodated in the room, noise near the upper side in the cabin 7 can be efficiently absorbed by the sound absorbing material 444.
  • the closing plate 446 for closing the ceiling hole 445 formed in the inner roof 362
  • the sound absorbing material 444 is attached to the upper surface side of the closing plate 446
  • the closing plate 446 is attached to the inner roof 362.
  • the sound absorbing material 444 can be easily attached to or detached from the roof body 306 simply by attaching and detaching.
  • the rectangular frame that supports the roof body 306 includes the front beam member 303, the rear beam member 304, and the left and right side beam members 305.
  • the front beam member 303, the rear beam member 304, and the left and right side beam members 305 correspond to frame members constituting the cabin frame 300.
  • the front beam member 303 is made of a hollow (rectangular cross-section) square pipe material, and extends long in the left-right direction.
  • the left and right end surfaces of the front beam member 303 are welded and fixed to the upper end side surface of the front column 301.
  • the rear beam member 304 and the left and right side beam members 305 are both made of steel having a C-shaped cross section (groove shape).
  • the rear beam member 304 extends long in the left-right direction, and the left and right side beam members 305 extend long in the front-rear direction.
  • Reinforcing plates 304a and 305a extending along the respective longitudinal directions are fitted into the openings of the rear beam member 304 and the side beam members 305 and fixed by welding. For this reason, at least the longitudinal halfway part of the rear beam member 304 and each side beam member 305 is hollow (such as a rectangular pipe).
  • the left and right end surfaces of the rear beam member 304 are fixed to the upper end side surface of the rear column 302 by welding.
  • the front end surface of each side beam member 305 is welded and fixed to the upper end side surface of the front column 301. Therefore, either the left or right end surface of the front beam member 303 and the front end surface of either of the left or right side beam members 305 are in contact with the upper end side of the front column 301.
  • a bracing reinforcement bracket 319 is fixed by welding inside the front beam member 303 and the left and right side beam members 305. The presence of the reinforcing bracket 319 ensures the connection strength between the front beam member 303, the left and right side beam members 305, and the front column 301.
  • each side beam member 305 is fixed to the upper end side surface of the rear column 302 by welding. Therefore, either the left or right end face of the rear beam member 304 and the rear end face of either the left or right side beam member 305 are in contact with the upper end side of the rear column 302.
  • a brace-like reinforcing bracket 319 is also welded and fixed inside the rear beam member 304 and the left and right side beam members 305. The presence of the reinforcing bracket 319 ensures the connection strength between the rear beam member 304, the left and right side beam members 305, and the rear column 302.
  • the cabin 7 that covers the control seat 8 on the traveling machine body 2 is provided, and the cabin 7 includes a cabin frame 300 that constitutes a framework. At least one frame member 304, 305 of the cabin frame 300 is formed in a C-shaped cross section, and reinforcing plates 304a, 305a extending along the longitudinal direction of the frame member 304, 305 are provided on the frame member 304, 305. By welding and fixing to the opening, at least the longitudinal middle part of the frame member 304, 305 is formed in a hollow shape, so that the frame member 304, As a result, the rigidity of the cabin frame 300 can be improved and the cost can be reduced.
  • Base brackets 327 are attached to the left and right abutting portions on the lower rear side of the cabin frame 300 so as to project outward in the left and right directions.
  • a base bracket projecting outward in the left and right directions at the connecting portion (butting portion) between the left and right rear lower frames 310 and the bottom frame 311. 327 is provided.
  • a base bracket 327 is connected to a rear support base 97 on the rear axle case 19 that protrudes left and right outward from the transmission case 17 of the traveling machine body 2 via a rear vibration isolation rubber body 99 that is a vibration isolation member.
  • the lower end surface of the rear lower frame 310 is fixed to the upper surface of the rear end of the bottom frame 311 by welding.
  • a base bracket 327 is previously attached to the rear end side of the bottom frame 311 by welding to form a unit.
  • the base bracket 327 includes a substrate plate 328 to which the post-vibration rubber body 99 is attached, and a pair of front and rear connecting pieces 329 and a reinforcing plate piece 330 that complement the connection strength between the substrate plate 328 and the bottom frame 311.
  • the substrate plate 328 is fixed by welding so as to protrude outward in the left-right direction with respect to the lower surface of the rear end of the bottom frame 311.
  • the pair of front and rear connecting pieces 329 connects the upper surface of the substrate plate 328 and the rear end side of the bottom frame 311.
  • the rear cover piece 329 closes the rear opening end surface of the bottom frame 311 which is a hollow (a rectangular cross section) square pipe material.
  • the front cover piece 329 supports the rear end side surface of the bottom frame 311 via the reinforcing plate piece 330.
  • the reinforcing plate piece 330 is disposed so as to overlap the butted portion of the rear lower frame 310 and the bottom frame 311 from the side.
  • An opening hole 330 a is formed in the reinforcing plate piece 330 so as to face the butted portion between the rear lower frame 310 and the bottom frame 311. The presence of the opening hole 330a makes it possible to weld the reinforcing plate piece 330 to the portion of the butted portion of the rear lower frame 310 and the bottom frame 311 that the reinforcing plate piece 330 covers.
  • the rear lower frame 310 can be retrofitted to the bottom frame 311 after attaching the base bracket 327 with the reinforcing plate piece 330 to the bottom frame 311 in advance to form a unit.
  • the welding length of the portion of the butted portion between the bottom frame 311 and the rear lower frame 310 that covers the reinforcing plate piece 330 is sufficiently increased due to the presence of the opening hole 330a. It can be secured. Therefore, while the joining workability of the bottom frame 311 and the rear lower frame 310 can be improved, the joining strength of the bottom frame 311 and the rear lower frame 310 can be improved, and the rigidity of the cabin frame 300 can be improved.
  • a base bracket 327 is attached to the left and right abutting portions on the lower rear side of the cabin frame 300 so as to protrude outward in the left and right directions, and the rear axle case 19 that protrudes outward in the left and right directions from the transmission case 17 of the traveling body 2 Since the base bracket 327 is connected to the support base 97 via the vibration isolation member 99, the lower rear side of the cabin frame 300 can be supported from the left and right outer sides, and the lower rear side of the cabin frame 300 is supported by the traveling aircraft body. 2 can be connected in a vibration-proof and stable manner.
  • the transparent single glass side doors 323 are disposed so as to be able to be opened and closed.
  • the side door 323 is attached to the corresponding rear column 302 through a pair of upper and lower hinges 324 so as to be opened and closed.
  • a door lock member 400 that switches the side door 323 between a locked state and an unlocked state is provided on the front side of the side door 323.
  • the handle 400a provided on the outer surface side of the door lock member 400, the door lock member 400 is locked or unlocked, and the side door 323 is opened and closed.
  • a C-shaped reinforcing frame 401 in side view is arranged to increase the strength of the side door 323.
  • the reinforcing frame 401 includes a vertical frame portion 402 extending along the rear edge side of the side door 323, an upper horizontal frame portion 403 extending forward from the upper end side of the vertical frame portion 402 along the upper edge side of the side door 323, and a vertical frame.
  • a lower horizontal frame portion 404 extending forward from the lower end side of the portion 402 so as to partition the upper and lower sides of the side door 323.
  • the lower horizontal frame portion 404 is located in the middle of the upper and lower sides of the inner surface of the side door 323 and corresponds to a longitudinal frame body that increases the strength of the side door 323.
  • the reinforcing frame 401 is positioned so as to surround the upper side of the side door 323.
  • the reinforcing frame 401 is connected to the door lock member 400 and a pair of upper and lower hinges 324.
  • the front end side of the lower horizontal frame portion 404 is connected to the door lock member 400.
  • a corner portion between the lower horizontal frame portion 404 and the vertical frame portion 402 is connected to the front end side of the lower hinge 324, and an upper end side of the vertical frame portion 402 is connected to the upper hinge 324. That is, the side door 323 is sandwiched between the door lock member 400 and the pair of upper and lower hinges 324 and the reinforcing frame 401.
  • a front end side of the upper horizontal frame portion 403 is directly connected to an upper end front portion of the side door 323.
  • the lower hinge 324 and the fender frame 312 are connected via an air cylinder 405.
  • the door lock member 400 is switched to the unlocking direction by grasping with a hand at the middle part of the lower horizontal frame part 404, that is, the part of the lower horizontal frame part 404 where the hand of the operator seated on the control seat 8 reaches.
  • a grip body 406 to be operated is provided.
  • the grip body 406 is interlocked and connected to the door lock member 400 via a wire member built in the lower horizontal frame portion 404.
  • the door lock member 400 is switched in the unlocking direction via the wire member.
  • the door lock member 400 is unlocked.
  • the operator can unlock the door lock member 400 only by a very simple operation of holding the grip body 406 together with the lower horizontal frame portion 404 while sitting on the control seat 8. If the side door 323 is pushed as it is, the side door 323 smoothly opens and rotates.
  • the cabin 7 that covers the control seat 8 on the traveling machine body 2 is provided, and the cabin 7 includes a cabin frame 300 that forms a framework, and left and right sides of the cabin 7.
  • a C-shaped reinforcing frame 401 in a side view that increases the strength of the side door 323 is disposed on the inner surface side of the side door 323, and the reinforcing frame 401, a vertical frame portion 402 extending along the rear edge side of the side door 323, an upper horizontal frame portion 403 extending forward from the upper end side of the vertical frame portion 402 along the upper edge side of the side door 323, A lower horizontal frame portion 404 extending forward from the lower end side of the vertical frame portion 402 so as to partition the upper and lower sides of the side door 323; Because they have, the reinforcing frame 401 so as to surround the upper portion of the side door 323 will be located.
  • the rigidity of the side door 323, which is often made of a single glass, is utilized by using the reinforcing frame 401 as a strength member of the side door 323 itself, while ensuring the side view of the cabin 7 side. Can be planned. Further, the lower horizontal frame portion 404 can be used as a handrail for getting on and off the cabin 7.
  • the reinforcing frame 401 is connected to a door lock member 400 that switches the side door 323 between a locked state and an unlocked state, and a pair of upper and lower hinges 324 that connect the side door 323 to the cabin frame 300 so as to be opened and closed. Since they are connected, the side door 323 can be sandwiched between the door lock member 400 and the pair of upper and lower hinges 324 and the reinforcing frame 401, and the reinforcing frame 401 can be easily and highly strengthened with respect to the side door 323. Can be linked. Therefore, the assembly work of the side door 323 can be facilitated and the manufacturing cost can be reduced.
  • the cabin 7 that covers the control seat 8 on the traveling machine body 2 is provided, and the cabin 7 includes a cabin frame 300 that forms a framework, and left and right sides of the cabin 7.
  • a door lock member 400 that switches the side door 323 between a locked state and an unlocked state is provided on the front side of the side door 323, and the side door
  • a front and rear longitudinal frame body 404 that increases the strength of the side door 323 is disposed in the middle of the upper and lower sides of the inner surface of the H.323, and the door lock member 400 is connected to the front end side of the frame body 404.
  • the door lock member 400 is moved to a position where the operator's hand seated on the control seat 8 can reach by hand. Since the grip body 406 for switching operation in the direction of release is provided, the operator can perform the door lock only by a very simple operation such as gripping the grip body 406 together with the frame body 404 while sitting on the control seat 8. The member 400 can be unlocked, and the opening operability of the side door 323 can be improved.
  • the upper and lower hinges 324 for connecting the side door 323 to the rear column 302 of the cabin frame 300 so as to be openable and closable are a hinge stay 408 provided on the rear column 302 and a hinge cover 409 pivotally attached to the hinge stay 408 so as to be laterally rotatable. And have.
  • the front half of the hinge cover 409 is bolted to the rear edge side of the side door 323.
  • the hinge stay 408 includes a flat plate portion 408a protruding from the rear column 302 and a pivotal support portion 408b formed on the tip side of the flat plate portion 408a.
  • a stopper bolt 410 is attached to the flat plate portion 408 a of the hinge stay 408 as a stopper member that abuts on the inner surface rear side of the hinge cover 409 and restricts the maximum opening angle of the side door 323.
  • the stopper bolt 410 is provided with a metal contact plate 411 on the inner surface rear side of the hinge cover 409. A state in which the side door 323 is opened and the head or the tip of the stopper bolt 410 is brought into contact with the contact plate 411 of the hinge cover 409 is the maximum opening angle of the side door 323.
  • the screwing amount of the stopper bolt 410 By adjusting the screwing amount of the stopper bolt 410, the contact position between the contact plate 411 of the hinge cover 490 and the stopper bolt 410 is changed, and the maximum opening angle of the side door 323 is adjusted.
  • the cabin 7 is provided that covers the control seat 8 on the traveling machine body 2, and the cabin 7 includes a cabin frame 300 that forms a framework, and left and right sides of the cabin 7.
  • the work vehicle 1 includes a hinge 324 that connects the side door 323 to the cabin frame 300 so as to be opened and closed.
  • the hinge 324 is provided in the cabin frame 300.
  • the hinge stay 408 and a hinge cover 409 pivotally attached to the hinge stay 408 so that the hinge stay 408 is in contact with the inner surface of the hinge cover 409 and has a maximum opening angle of the side door 323.
  • the hinge stay 408 is attached to the hinge stay 408. Only simple structure using the stopper member 410 to attach Ri can be achieved regulations maximum opening angle of the side door 323. Therefore, a structure that regulates the maximum opening angle of the side door 323 can be manufactured at low cost, and the cost can be reduced.
  • the stopper member 410 is a stopper bolt that is screwed into the hinge stay 408. By adjusting the screwing amount of the stopper bolt 410, the position of contact with the hinge cover 409 is changed and the side door 323 is fully opened. Since the angle is adjusted, the adjustment operation of the maximum opening angle of the side door 323 can be performed extremely easily.
  • a transparent single glass rear glass 322 that closes and opens the portion is disposed on the rear side of the cabin 7 (the rear surface side of the cabin frame 300).
  • the rear glass 322 is attached to the rear beam member 304 through a pair of left and right hinges 413 so as to be openable and closable (can be turned up and down).
  • a locked block 414 serving as a locked portion that determines the opening / closing position of the rear glass 322 is bolted to the left and right central portions of the upper surface of the rear intermediate beam member 309 in the cabin frame 300.
  • the locked block 414 is formed in a U-shape in plan view that opens toward one of the rear columns 302.
  • Rotating handle 415 is attached to the free end side of rear glass 322 inner surface.
  • the rotary handle 415 includes a handle base portion 416 fastened to the free end of the inner surface of the rear glass 322, a rotary shaft portion 417 protruding forward from the handle base portion 416, and a handle protruding in a direction intersecting with the rotary shaft portion 417. Part 418.
  • the rotating shaft portion 417 is formed with a plurality of downwardly protruding engaging protrusions 420a and 420b that are positioned at an appropriate interval in the longitudinal direction.
  • the opening / closing position of the rear glass 322 can be switched in four stages including the fully closed position by the combination of the engagement protrusions 420a and the locked block 414. It is configured.
  • the rear side portion of the cabin 7 Is closed by the rear glass 322 (the rear glass 322 is in the fully closed position).
  • the rear glass 322 is in a minimum half-open position slightly separated from the rear side portion of the cabin 7.
  • the rear side portion of the cabin 7 is located behind the cabin 7 from the minimum half-open position.
  • An intermediate half-open position away from In a state in which the second engagement protrusion 420b is fitted into the recessed groove 414b of the locked block 414, the rear glass 322 is at the maximum open position farthest from the rear side portion of the cabin 7.
  • the opening / closing window is not limited to the rear glass 322. Further, the opening / closing window is not limited to the flip-up type, and may be a vertical type or a horizontal type.
  • a wiper 421 for cleaning the rear glass 322 is provided on the outer surface upper side of the rear glass 322 (see FIG. 38).
  • a wiper drive case 422 that houses a wiper motor (not shown) for driving the wiper 421 and the like is mounted on the inner surface upper side of the rear glass 322 (see FIG. 39). Since the wiper 421 protrudes outward at the upper part of the outer surface of the rear glass 322, the wiper 421 interferes with the rear cover when the rear glass 322 is swung up and rotated on the rear cover 363 of the roof body 306. A relief recess 423 that is recessed upward is prevented (see FIG. 29). As shown in FIG. 29).
  • a reflector 427 is provided on the fixed bracket 424 attached to the left side of the rear glass 322.
  • the fixed bracket 424 and the left rear column 302 are connected via a damper body 425 such as an air cylinder, and the right side portion of the rear glass 322 and the right rear column 302 are connected via a damper body 426 such as an air cylinder. (See FIG. 39).
  • the cabin 7 is provided to cover the control seat 8 on the traveling machine body 2, and the cabin 7 includes a cabin frame 300 constituting a framework and one side portion of the cabin 7.
  • a locking portion 414 that determines the opening / closing position of the opening / closing window 322 is attached to the cabin frame 300.
  • a plurality of engaging protrusions 420a and 420b that are selectively engaged with and disengaged from the locked portion 414 by a turning operation of the turning handle 415 are attached to the turning handle 415 provided on the free end side.
  • the opening / closing position of the opening / closing window 322 can be switched to a plurality of stages by only a very simple (one-touch) operation of rotating the rotating handle 415. Almost perform the opening and closing operation of the opening and closing windows 322 or the half-open or fully closed.
  • FIG. 42 As shown in FIG. 42, on the upper surface of the hydraulic lifting mechanism 22 on the rear side of the upper surface of the transmission case 17, a plurality of hydraulic external take-out valves 430 as hydraulic external take-out mechanisms are arranged side by side in the vertical direction.
  • the hydraulic fluid can be supplied to a work machine such as a front loader or a boom sprayer that is detachably attached to the machine body 2.
  • Each hydraulic external take-out valve 430 is a mechanically operated switching valve, and each hydraulic external take-out valve 430 and the corresponding hydraulic operation lever 54 are interlocked and connected by a push-pull wire 431 as a rope member.
  • the switching spool of each hydraulic external take-off valve 430 is interlocked and connected to the corresponding hydraulic operation lever 54 via the push-pull wire 431.
  • the hydraulic operation levers 54 are turned, the corresponding hydraulic external take-off valves 430 are switched.
  • each hydraulic operation lever 54 is disposed on the left side column 42 (see FIG. 2).
  • the number of hydraulic external take-off valves 430 is determined according to the number of hydraulic equipment for work implements that are mounted as necessary, and is not particularly limited.
  • the hydraulic external take-out valve 430 and the hydraulic operation lever 54 can be attached as an option when shipped or retrofitted.
  • the tractor 1 can be equipped with a work machine such as a front loader or a boom sprayer, and is usually shipped with a rotary cultivator that is a ground work machine and no other work machines attached.
  • a work machine such as a front loader or a boom sprayer
  • a rotary cultivator that is a ground work machine and no other work machines attached.
  • an appropriate number of hydraulic external take-out valves 430 and hydraulic operation levers 54 can be optionally attached.
  • the number of option settings is usually 4 or less, and can be applied to most work machines.
  • clamp portions for supporting the push-pull wires 431 are provided on the left and right sides of the rear cover plate 314 located behind the control seat 8. 432 is formed.
  • the clamp portion 432 is formed by punching the right side portion of the rear cover plate 314 and bending it backward.
  • a pair of upper and lower triangular blocks 433 are fixed by welding to the right and left inner sides of the right rear lower frame 310.
  • the upper and lower triangular blocks 433 and the right rear lower frame 310 are welded and fixed to the upper and lower and right edges of the clamp portion 432 of the rear cover plate 314.
  • the clamp part 432 is formed with a fitting hole 434 through which the push-pull wire 431 is inserted.
  • the same number of fitting holes 434 as the hydraulic external take-out valves 430 (four in the embodiment) are provided in the vertical direction with respect to the clamp portion 432.
  • a ring-shaped grommet 435 made of a soft elastic material is fitted in the middle portion of each push-pull wire 431.
  • the longitudinal midway part of each push-pull wire 431 is fitted and fixed to the fitting hole 434 of the clamp part 432 through a grommet 435 by forced fitting.
  • Each fitting hole 434 of the clamp part 432 is closed by a push-pull wire 431 and a grommet 435.
  • Each push-pull wire 431 is inserted through the fitting hole 434 of the clamp portion 432 into the cabin 7 (inside the area surrounded by the cabin frame 300).
  • the cabin frame 300 constituting the framework of the cabin 7 covering the control seat 8 on the traveling machine body 2 and the detachable to the traveling machine body 2
  • a hydraulic external take-out mechanism 430 that supplies hydraulic oil to a working machine mounted on the machine, a plurality of hydraulic operation levers 54 that manually operate the hydraulic external take-out mechanism 430, the hydraulic external take-out mechanism 430, and the hydraulic operation levers 54
  • the work vehicle 1 including the cord member 431 that interlocks and connects the cover plate 314 attached to the cabin frame 300, a clamp portion 432 for the cord-like member 431 is formed on the cover plate 314 by punching and bending.
  • the clamp part 432 is fixed to the cabin frame 300 by welding,
  • The can supported by the clamp portion 432 formed in the cover body 314, the cord-like member 431 to adequately prevented entangled to the each other, can be orderly arranged the respective cord-shaped member 431.
  • the wiring work of each of the cord-like members 431 can be easily performed.
  • the cover plate 314 can be used as a strength member of the cabin frame 300 (rear lower frame 310), so that the overall rigidity of the cabin frame 300 can be improved.
  • the clamp portion 432 is formed with a fitting hole 434 through which the cord-like member 431 is inserted, and the cord-like member 431 is attached to the fitting hole 434 through a grommet 435 made of an elastic material by forced fitting. Therefore, the cord-like member 431 can be inserted and attached to the clamp part 432 in a one-touch manner, and the number of assembling steps can be reduced. Therefore, the workability of attaching the cord-like member 431 to the clamp part 432 can be improved. Furthermore, since the grommet 435 is made of an elastic material, the sealing performance of the clamp portion 432 can be reliably ensured.
  • FIG. As shown in FIGS. 42 to 44, an inside air discharge case 436 is provided on the lower rear side of the cabin 7 as an inside air discharge portion for releasing the air in the cabin 7 to the outside when the side door 323 is closed.
  • a pair of left and right communication holes 437 are formed in the left and right other side portions (the left side portion located on the opposite side of the clamp portion 432) of the rear cover plate 314 located behind the control seat 8 (FIG. 21). 23, 43 and 44).
  • a ventilation plate 438 in which ventilation holes are formed in a matrix shape is disposed at both communication holes 437 of the rear cover plate 314 so as to overlap from the rear.
  • the left and right communication holes 437 and the ventilation plate 438 are covered from behind by an inside air discharge case 436 having a triangular cross section.
  • the inside air discharge case 436 is detachably fastened to the back surface of the rear cover plate 314 via the ventilation plate 438. That is, the inside air discharge case 436 is attached to the lower rear portion of the cabin 7 from the outside.
  • the front side of the inside air discharge case 436 is open forward.
  • a pair of left and right openings 439 are formed on the lower surface side of the inside air discharge case 436.
  • Each opening 439 is fitted and fixed with a discharge port body 440 for releasing air made of a soft elastic material.
  • a cut 441 is formed in each discharge port body 440.
  • the notch 441 is closed, and the airtightness in the cabin 7 is maintained.
  • the side door 323 is closed, the air in the cabin 7 is abruptly compressed and the internal pressure of the cabin 7 increases, so the notches 441 of each discharge port body 440 are opened and the air in the cabin 7 is released to the outside (air venting).
  • the cabin 7 is maintained in a positive pressure state.
  • the cabin 7 covering the control seat 8 on the traveling machine body 2 and the side door 323 that opens and closes the left and right sides of the cabin 7 are opened and closed.
  • an inside air discharge portion 436 that releases the air in the cabin 7 to the outside when the side door 323 is closed is provided on the lower back side of the cabin 7.
  • the air in the cabin 7 can be released from the inside air discharge portion 436, and the inside of the cabin 7 can be easily maintained in a positive pressure state.
  • the side door 323 can be closed smoothly.
  • the inside air discharge part 436 is attached to the lower back of the cabin 7 from the outside and the discharge port body 440 is provided on the lower surface side of the inside air discharge part 436, the cabin 7 is connected via the discharge port body 440. It is possible to accurately prevent rainwater and the like from entering inside. Furthermore, in the embodiment, since a plurality of (in this case, two) discharge port bodies 440 are provided in the inside air discharge portion 436, there is an advantage that it is easy to cope with a large pressure change (internal pressure change) in the cabin 7.
  • FIG. 19, 22 and 45 a vertically long board support plate 308 for fixing and supporting the dashboard 33 is connected to the left and right inner end sides of the front lower plate plate 307 connected to the lower end side of each front column 301.
  • the board support plate 308 is erected between the left and right front columns 301.
  • the board support plate 308 is one of the components of the cabin frame 300 and constitutes a strength member of the cabin frame 300.
  • a windshield 321 is disposed on the front side of the cabin frame 300, that is, in an area surrounded by the left and right front columns 301, the front beam members 303, and the left and right front lower plate plates 307.
  • the board support plate 308 is located on the cabin 7 inner side with respect to the windshield 321.
  • the windshield 321 covers the front side of the board support plate 308.
  • the windshield 321 is disposed on the front side of the cabin 7 without forming a notch.
  • FIG. 47 not only the steering column 32 and the dashboard 33 described above are attached to the board support plate 308, but also a brake valve 254 for braking the wheels 3 and 4 of the traveling machine body 2, and a brake valve 254.
  • a brake pedal 35 for operating is attached.
  • the brake valve 254 and the brake pedal 35 are supported on the board support plate 308.
  • through holes 253 and 442 penetrating in the front-rear direction are formed in both the windshield 321 and the board support plate 308.
  • a brake valve 254 is inserted into and fixed to the through holes 253 and 442.
  • the front end side of the brake valve 254 protrudes forward of the cabin 7 from both through holes 253 and 442.
  • a front wiper 251 for cleaning the windshield 321 is provided near the center of the windshield 321 (see FIG. 46).
  • the drive shaft 252 of the front wiper 251 passes through the windshield 321 and is pivotally supported on the upper portion of the board support plate 308.
  • a wiper drive case 443 accommodating a wiper motor (not shown) for driving the drive shaft 252 of the front wiper 251 is attached to the upper rear side of the board support plate 308 (see FIG. 47).
  • the cabin frame 300 constituting the framework of the cabin 7 covering the control seat 8 on the traveling body 2 and the front side of the cabin 7 are shown.
  • the cabin frame 300 includes a board support plate 308 that supports the dashboard 33 located in front of the control seat 8, and is closer to the interior of the cabin 7 than the windshield 321. Since the board support plate 308 is positioned and the board support plate 308 is configured as a strength member of the cabin frame 300, the dashboard 33 is supported by the board while improving the rigidity of the cabin frame 300 as a whole.
  • the plate 308 can be supported with high strength.
  • the windshield 321 can be attached to the front side of the cabin 7 without forming a notch, and the processing cost of the windshield 321 and the cost for securing the sealing property can be reduced.
  • the windproof and waterproof structure of the cabin 7 can be easily configured.
  • the brake valve 254 that brakes the wheels 3 and 4 of the traveling machine body 2 and the brake pedal 35 that operates the brake valve 254 are attached to the board support plate 308, the brake pedal 35 that is a movable member. And the brake valve 254 can be supported with high strength on the board support plate 308 which is a strength member of the cabin frame 300.
  • through holes 253 and 442 penetrating in the front-rear direction are formed in the windshield 321 and the board support plate 308, and the brake valve 254 is inserted and fixed in the through holes 253 and 442, and the front end side of the brake valve 254 Projecting from the through holes 253 and 442 to the front of the cabin 7, the windproof and waterproof structure of the cabin 7 can be easily configured, and the brake pedal 35 is disposed in the cabin 7.
  • the brake valve 254 and the braking mechanism for braking the wheels 3 and 4 can be easily connected.

Abstract

L'invention a pour objectif technique de permettre d'effectuer un travail agricole de manière confortable, par exemple en gérant le conditionnement de l'air ou en réduisant le bruit à l'intérieur d'une cabine. Le véhicule de travail (1) de l'invention est équipé : d'un châssis de cabine (300) qui configure la structure de la cabine (7) recouvrant un siège de conduite (8) sur un corps de machine mobile (2) ; et d'un corps de toit (306) disposé côté extrémité supérieur du châssis de cabine (300). Une partie interne du corps de toit (306) est divisée en deux chambres avant/arrière, et un matériau acoustique absorbant (444) est disposé côté face supérieure d'un toit interne (362) configurant le plafond de la chambre avant du corps de toit (306). Le matériau acoustique absorbant (444) est admis à l'intérieur de la chambre avant.
PCT/JP2015/068367 2014-06-26 2015-06-25 Véhicule de travail WO2015199182A1 (fr)

Priority Applications (2)

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CN201580031542.8A CN106470876A (zh) 2014-06-26 2015-06-25 作业车辆
KR1020167031441A KR102140429B1 (ko) 2014-06-26 2015-06-25 작업 차량

Applications Claiming Priority (2)

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JP2014131861A JP2016008037A (ja) 2014-06-26 2014-06-26 作業車両
JP2014-131861 2014-06-26

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WO2015199182A1 true WO2015199182A1 (fr) 2015-12-30

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CN (1) CN106470876A (fr)
WO (1) WO2015199182A1 (fr)

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CN113547977A (zh) * 2021-05-27 2021-10-26 浙江吉利控股集团有限公司 一种隐藏式车顶灯及车辆

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CN108131996B (zh) * 2017-11-28 2023-10-20 北京北方车辆集团有限公司 一种用于装甲车辆的可快速拆装式翼子板
EP3730347B1 (fr) * 2017-12-18 2023-06-07 Kubota Corporation Tracteur et engin de chantier

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JPH08238995A (ja) * 1995-03-03 1996-09-17 Hino Motors Ltd トラクタ及びトレーラ間にかけ渡されるジャンパケーブルの取付構造
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JPS63155810U (fr) * 1987-04-01 1988-10-13
JPH05272151A (ja) * 1992-03-23 1993-10-19 Kubota Corp 土工作業機
JPH08238995A (ja) * 1995-03-03 1996-09-17 Hino Motors Ltd トラクタ及びトレーラ間にかけ渡されるジャンパケーブルの取付構造
JP2002067657A (ja) * 2000-09-04 2002-03-08 Yanmar Agricult Equip Co Ltd 空気調和機を取り付けるキャビンの構造
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JP2008002067A (ja) * 2006-06-20 2008-01-10 Mitsubishi Agricult Mach Co Ltd 作業車両
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CN106470876A (zh) 2017-03-01
KR102140429B1 (ko) 2020-08-03
JP2016008037A (ja) 2016-01-18
KR20170020743A (ko) 2017-02-24

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