Work vehicle

Abstract

To address such a problem that conventionally, work vehicles (tractors) include a cabin in which an operator boards, however, when a position information acquisition device is equipped on a work vehicle with a cabin, it is often installed outside the cabin, resulting in high costs to ensure weather resistance.SOLUTION: A work vehicle includes a cabin (23) in which an operator boards, and a position information acquisition device (31) for acquiring position information of the vehicle body, where the position information acquisition device (31) is disposed in a space between a cabin roof (25) and an interior panel (36), the cabin (23) includes a glass window (27) in a side face thereof, and the position information acquisition device (31) is disposed below a portion of the cabin roof (25), extending further laterally beyond the glass window (27).SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a work vehicle equipped with a cabin.

Background Art

[0002] Conventionally, there has been a work vehicle (tractor) equipped with a cabin in which an operator rides (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when a work vehicle equipped with a cabin is equipped with a position information acquisition device, it is often installed outside the cabin, which poses a problem of high cost for ensuring weather resistance.

Means for Solving the Problems

[0005] The invention according to claim 1 is a work vehicle including a cabin (23) in which an operator rides and a position information acquisition device (31) that acquires position information of the vehicle body, wherein the position information acquisition device (31) is disposed in a space between a cabin roof (25) and an interior panel (36).

[0006] The invention according to claim 2 is a work vehicle including a glass window (27) on a side surface of the cabin (23), wherein the position information acquisition device (31) is disposed below a portion of the cabin roof (25) that extends laterally beyond the glass window (27).

[0007] According to the present invention, it is possible to improve the weather resistance and the convenience of harness connection without interfering with the position acquisition performance by the position information acquisition device (31).

Brief Description of the Drawings

[0008]

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Embodiments for Carrying Out the Invention

[0009] Hereinafter, a combine harvester 1, which is an example of a work vehicle according to an embodiment of the present invention, will be described with reference to the accompanying drawings. For ease of understanding, for the convenience of explanation, the front side is referred to as the front, the rear side as the rear, the right hand side as the right side, and the left hand side as the left side when viewed from the operator, but the configuration is not limited thereto.

[0010] <Overall configuration of the combine harvester> As shown in FIGS. 1 to 3, the combine harvester 1 is provided with a traveling device 4 having a pair of left and right traveling crawlers 3 that travel on the soil surface on the lower side of the vehicle body 2, and on the left and right on the vehicle body 2, a threshing device 6 that threshes and separates the cereal straws that are conveyed and supplied while being sandwiched by the feed chain 5, a grain tank 7 as a storage device that temporarily stores the grains, and a discharge auger 8 that discharges the grains stored in the grain tank 7 outside the machine. The discharge auger 8 is mounted and arranged, and a straw discharge processing device 9 is mounted on the rear end portion of the threshing device 6. The discharge auger 8 undulates by operating the auger lifting cylinder when discharging the grains.

[0011] In front of the threshing device 6, there are a weeding body 11 that weeds the uncut cereal straws from the front end side, a lifting portion 12 that lifts the weeded cereal straws, a cutting blade portion 13 that cuts the lifted cereal straws, and a supply adjustment conveyance portion that rakes in the cut cereal straws and adjusts the handling depth during conveyance and transfers them to the feed chain 5. The harvesting device 15 having the like is suspended and arranged at the front end portion of the vehicle body 2 so as to be vertically movable with respect to the soil surface by a harvesting lifting cylinder.

[0012] An operating device for operating and controlling the combine harvester 1 and an operator's seat 21 on which the operator sits are provided at the upper rear side of the harvesting device 15. An engine 22 is mounted below the operator's seat 21, the grain tank 7 is arranged at the rear side, and a cabin 23 that covers the operating device and the operator's seat 21 is provided. These traveling device 4, threshing device 6, harvesting device 15, operating device, engine 22, cabin 23, etc. are mounted on the vehicle body 2 of the combine harvester.

[0013] In addition, on the monitor 35 provided inside the cabin 23, when the full tank sensor detects that the grain in the grain tank 7 is full, an alarm indicating that the grain tank is full, or when the fuel level sensor detects that the fuel in the fuel tank is running low, an alarm indicating fuel shortage and various support items from the control device are displayed.

[0014] The operating device includes a main transmission lever that actuates a transmission actuator to switch between forward and reverse and stop and to perform main transmission switching by the forward and backward operations of the operator seated in the operator's seat 21, a steering lever that actuates a left and right traveling actuator to operate the left and right side clutches and left and right side brakes of the left and right traveling crawlers 3, 3 by tilting operations to the left and right sides to perform left and right steering during straight travel and turning in various turning modes, and to operate the mowing lift cylinder by an operation in the front and rear direction to raise and lower the mowing device 15, a threshing lever that actuates a threshing clutch actuator to turn on and off the drive between the mowing device 15 and the threshing device 6, an auger operation lever that moves the position of the discharge port 8a at the tip of the grain discharge auger 8 vertically by the operation of the auger lift cylinder and horizontally by the operation of the left and right turning actuator, and various operating tools such as an auger drive switching lever that actuates an auger drive electromagnetic clutch to turn on and off the drive of the grain discharge auger 8 to discharge the grain in the grain tank 7 to the outside of the machine through the discharge port 8a.

[0015] <Cabin 23> As shown in FIGS. 1 to 3, the cabin 23 is configured in a box shape by providing a cabin roof 25 on the upper part of a cabin frame 24 whose base is fixed to the vehicle body 2, and is equipped with a door 26 that opens and closes at the front with a right glass window 26a provided on the right side surface, left glass windows (glass windows) 27 on the left side surface, a front glass window 28 on the front side surface, and a rear glass window 29 on the rear side surface.

[0016] As shown in FIGS. 4 to 7, an air conditioner unit 30 is provided at the center in the front and rear direction on the upper left side inside the cabin 23, and a GNSS unit 31 as a position information acquisition device and a temperature-controlled storage 32 as a storage for keeping the PET bottles 30a, 30b and canned bottles cold and warm are provided behind the air conditioner unit 30.

[0017] The GNSS unit 31 is arranged within the left - right width of the air - conditioner unit 30, and the refrigerator 32 is arranged such that its left - hand side overlaps with the right - hand side of the air - conditioner unit 30.

[0018] Also, by arranging the GNSS unit 31 within the front - rear width of the refrigerator 32, it can be arranged without protruding to the rear of the cabin 23.

[0019] Therefore, the air - conditioner unit 30, the GNSS unit 31, and the refrigerator 32 can be compactly arranged in the upper - left space within the cabin 23.

[0020] Also, by utilizing the dead space behind the air - conditioner unit 30 to arrange the GNSS unit 31 and the refrigerator 32, and arranging the air - conditioner unit 30 and the refrigerator 32 in a position overlapping in the left - right direction, the space within the cabin 23 can be effectively utilized, and it can be prevented from protruding greatly into the living space within the cabin 23 or protruding outside the cabin 23.

[0021] Also, by providing the GNSS unit 31 within the cabin 23, the appearance is improved.

[0022] The lower surface of the GNSS unit 31 is configured to be at a higher position than the lower surface of the refrigerator 32, improving the rear visibility.

[0023] The GNSS unit 31 is arranged to protrude to the left side beyond the left end of the driver's seat 21, ensuring a wide indoor space.

[0024] The front duct 33F is extended from the front - side of the right - hand surface of the air - conditioner unit 30 forward toward the upper part within the cabin 23, curved (detoured) so as to protrude to the left in front of the air - conditioner unit 30, then extended from the front part within the cabin 23 from the left side to the right side, and further extended from the right side within the cabin 23 rearward to reach the right side of the driver's seat 21.

[0025] In the front duct 33F, left and right front air outlets 34a and 34b are provided at the front part inside the cabin 23, and further, front and rear right air outlets 34c and 34d as side air outlets are provided at the right part inside the cabin 23.

[0026] Note that the left and right front air outlets 34a and 34b provided at the front part inside the cabin 23 are configured to jet air - conditioned air downward, and also serve as a defogging function (defroster) for the front glass window 28.

[0027] A monitor 35 is arranged at a position where the front left part of the front duct 33F is curved (detoured) to widen the interior space of the cabin 23.

[0028] The monitor 35 is attached in a state of being recessed into the interior side surface of the interior panel 36, giving an integrated feeling as if it were embedded in the interior panel 36 and having a good appearance.

[0029] Also, the monitor 35 is arranged above the lower surface of the interior panel 36 to prevent light from shining in, and is located on the left side of a rearview mirror (a rear monitor may also be used) 37 provided at the front left - right center position, making it easily visible to the driver sitting on the driver's seat 21.

[0030] Also, a rear duct 33R is extended from the rear - side of the right side surface of the air - conditioning unit 30 in a bifurcated manner forward and backward toward the upper part inside the cabin 23. A left - front air outlet 34e as a side air outlet is provided at a position where the rear duct 33R extended forward reaches the left side of the driver's seat 21. The end extended backward is opened at the upper part inside the refrigerator 32 to jet air - conditioned air into the refrigerator 32, and a left - rear air outlet 34f as a rear air outlet is provided on the opening - and - closing door 32a of the refrigerator 32 to jet air - conditioned air to the rear side of the driver's seat 21 so as to air - condition the back side of the driver.

[0031] And the front air inlet 33Fa at the base of the front duct 33F connected to the front side of the right side surface of the air conditioner unit 30 is wider than the rear air inlet 33Ra at the base of the rear duct 33R connected to the rear side of the right side surface of the air conditioner unit 30.

[0032] Therefore, the front duct 33F is a long duct that reaches from the left part to the right part in the cabin 23 provided with the four left and right front air outlets 34a, 34b and the front and rear right air outlets 34c, 34d via the front part. However, a sufficient volume of air-conditioning air can be ensured at the wide front air inlet 33Fa from the air conditioner unit 30, and good air conditioning can be performed.

[0033] Also, since the rear duct 33R has a relatively short path for ejecting air-conditioning air from the left front air outlet 34e near the air conditioner unit 30 and the left rear air outlet 34f via the refrigerator 32, a sufficient air-conditioning effect can be obtained even through the narrow rear air inlet 33Ra from the air conditioner unit 30.

[0034] Also, since the air conditioner unit 30 sends air-conditioning air to the refrigerator 32 through the rear duct 33R, and after ejecting fresh air-conditioning air into the refrigerator 32, it is ejected from the left rear air outlet 34f, the inside of the refrigerator 32 can always be cooled or heated with fresh air-conditioning air.

[0035] Also, since the air conditioner unit 30 ejects air-conditioning air to the upper position inside the refrigerator 32 through the rear duct 33R and ejects it into the cabin 23 from the lower left rear air outlet 34f, the cooling efficiency and heating efficiency of the refrigerator 32 are good.

[0036] Also, since the left rear air outlet 34f is provided on the opening and closing door 32a of the refrigerator 32, it can be arranged without separately providing a space for the air outlet, resulting in a simple and inexpensive configuration.

[0037] Note that the front duct 33F and the rear duct 33R are integrally formed of synthetic resin. Although they are ducts separated into a front part and a rear part, the manufacturing cost can be reduced without increasing the number of parts by forming them integrally.

[0038] The lower surface of the refrigerator 32 is arranged above the lower surface of the air conditioner unit 30, and a wider space in the cabin 23 can be secured.

[0039] The refrigerator 32 is arranged in the upper left rear part in the cabin 23 and does not obstruct the forward view of the operator sitting on the operator's seat 21.

[0040] The refrigerator 32 is arranged behind the operator's seat 21. Therefore, even if the PET bottles 30a, 30b, etc. in the refrigerator 32 fall, they will not hit the operator sitting on the operator's seat 21.

[0041] The refrigerator 32 is arranged in the vicinity where its front surface coincides with the backrest of the operator's seat 21. Therefore, since the refrigerator 32 is not far from the operator's seat 21 which is the cockpit, it is easy to use.

[0042] The opening / closing door 32a of the refrigerator 32 is provided with a pivot shaft in the front-rear direction at the lower end, and the upper part is configured to open forward and downward. The PET bottles 30a, 30b, etc. inside will not roll out even when the opening / closing door 32a is opened. Note that a hook 32b that can be operated from the outside is provided at the upper part of the opening / closing door 32a to maintain the closed state.

[0043] Hoses 30c of the air conditioner unit 30 are arranged below the refrigerator 32, effectively utilizing the space below the refrigerator 32.

[0044] The left rear glass window 27a arranged behind the left glass window 27 is provided up to the position of the lower surface of the refrigerator 32, improving the left rear view.

[0045] As shown in FIG. 8, the refrigerator 32 can accommodate two 500-ml PET bottles 30a horizontally and three 350-ml PET bottles 30b vertically.

[0046] As shown in FIG. 9, the refrigerator-freezer 32 is provided with a recess 32c on the inner bottom surface to prevent the 500 ml plastic bottle 30a from rolling when stored horizontally.

[0047] A space 25a is provided between the upper surface of the refrigerator-freezer 32 and the cabin roof 25, and is configured such that the temperature of the cabin roof 25 does not directly transfer heat to the refrigerator-freezer 32.

[0048] Also, as shown in FIG. 10, the monitor 35 has a base portion of its mounting portion 35a mounted in a monitor mounting hole 35b provided on the lower surface of the interior panel 36, and has a neat appearance.

[0049] The refrigerator-freezer 32 has its bottom surface portion mounted in a cold storage mounting hole 32d provided on the lower surface of the interior panel 36, and has a neat appearance.

[0050] In the above embodiment, an example of the refrigerator-freezer 32 is shown as the storage, but it may also be a cold storage that functions with cold air from the air conditioner unit 30, or a heat-insulating storage that functions with warm air from the air conditioner unit 30.

[0051] In short, since the air conditioner unit 30, the front duct 33F, the rear duct 33R, and the plurality of air outlets 34a, 34b, 34c, 34d, 34e, 34f are provided above the cabin 23, a wide living space can be secured within the cabin 23.

[0052] Also, by making the front suction port 33Fa of the front duct 33F with a long air supply distance wider than the rear suction port 33Ra of the rear duct 33R with a short air supply distance, air-conditioning air can be evenly sent from the air conditioner unit 30 to the plurality of air outlets 34a, 34b, 34c, 34d, 34e, 34f around the interior of the cabin 23, the temperature within the cabin 23 can be changed as uniformly as possible, and an environment that is easy to work in can be realized.

[0053] Also, in the rear duct 33R, air-conditioning air is guided to the temperature-controlled refrigerator 32 that cools or warms PET bottles 30a, 30b, canned bottles, etc., and the rear air outlet 34f is provided in the temperature-controlled refrigerator 32. Therefore, the temperature-controlled refrigerator 32 can be arranged by utilizing the air-guiding path of the air-conditioning air, and a wide living space can be secured in the cabin 23.

[0054] Also, since the temperature-controlled refrigerator 32 is arranged on the rear side of the cabin 23 and the bottom thereof is located above the bottom of the air-conditioning unit 30, a wide living space can be secured in the cabin 23.

[0055] Also, since the rear air outlet 34f is provided in the opening / closing door 32a, the air-conditioning device can be further downsized.

[0056] Also, the opening / closing door 32a of the temperature-controlled refrigerator 32 is configured to open upward toward the front lower side by a pivot shaft provided at the lower part, and since the temperature-controlled refrigerator 32 and the rear air outlet 34f are located behind the operation seat 21, air-conditioning air can be sent to the rear of the operation seat 21, improving the comfort of the cabin 23. Even if the opening / closing door 32a opens unintentionally and the internal PET bottles 30a, 30b, etc. fall, it is difficult to hit the operator sitting on the operation seat 21, ensuring safety.

[0057] Also, by making good use of the upper space of the cabin 23, the air-conditioning unit 30, the rear duct 33R, the temperature-controlled refrigerator 32, and the position information acquisition device 31 can be arranged compactly, and a wide living space can be secured in the cabin 23.

[0058] Also, since the front duct 33F is curved and the monitor 35 is arranged at a part where the interior space of the cabin 23 is widened, a wide living space can be secured in the cabin 23, and the monitor 35 can be arranged at a location where it is easy to view, enabling efficient work.

[0059] Also, since the front air outlets 34a, 34b located above the front glass window 28 blow out air-conditioning air downward toward the front glass window 28, the defogging function (defroster) of the front glass window 28 can be utilized to prevent a decrease in visibility.

[0060] As shown in FIGS. 11 to 13, a wiper 40 is provided at the upper part of the outer surface of the windshield window 28.

[0061] The cabin roof 25 protrudes forward of the windshield window 28 at the front of the cabin 23.

[0062] The wiper 40 has a general configuration in which the base is rotatably supported by an offset plate 39 fixed to the front protruding portion of the cabin roof 25, and when not in operation, it stops and is stored in a horizontal posture within the lower surface of the front protruding portion of the cabin roof 25.

[0063] Therefore, since the wiper 40 is stored within the lower surface of the front protruding portion of the cabin roof 25 when not in operation, the forward visibility can be improved.

[0064] Inside the inner side of the front end portion of the cabin roof 25, a wiper motor 41 for driving the wiper 40 is provided. The drive shaft 41a of the wiper motor 41 is provided through the offset plate 39, and operates the rotation link mechanism of the wiper 40 so that the wiper 40 reciprocally rotates between a horizontal non-operating position and a position facing downward in the vertical direction to wipe off water droplets, dirt, etc. adhering to the outer surface of the windshield window 28.

[0065] A washer nozzle 42 is provided at the left and right central portions of the offset plate 39. When the operation device is operated, the washer pump operates to spray washing water onto the outer surface of the windshield window 28.

Explanation of Signs

[0066] 4 Traveling device 21 Operator's seat 23 Cabin 25 Cabin roof 25a Space 28 Windshield window 30 Air conditioner unit 30a PET bottle 30b PET bottle 31 Position information acquisition device (GNSS unit) 32 Storage (refrigerator) 32a Opening / closing door 32c Recess 33F Front duct 33Fa Front air inlet 33R Rear duct 33Ra Rear air inlet 34a Front air outlet (left front air outlet) 34b Front air outlet (right front air outlet) 34c Side air outlet (front right air outlet) 34d Side air outlet (rear right air outlet) 34e Side air outlet (left front air outlet) 34f Rear air outlet (left rear air outlet) 35 Monitor 40 Wiper

Claims

1. A work vehicle equipped with a cabin (23) in which a worker rides and a position information acquisition device (31) that acquires position information of a vehicle body, The position information acquisition device (31) is disposed in a space between a cabin roof (25) and an interior panel (36). Work vehicle.

2. A glass window (27) is provided on the side of the cabin (23), The position information acquisition device (31) is disposed below a portion of the cabin roof (25) that extends laterally beyond the glass window (27). Work vehicle.

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