Work vehicle

Abstract

To provide a work vehicle which is configured to appropriately provide a battery on a machine body frame.SOLUTION: A seat frame 33 is provided. A machine body frame has a first frame part 21, a second frame part 22 extending upward from the rear of the first frame part 21, and a third frame part 23 extending backward from the upper part of the second frame part 22. In the seat frame 33, a vertical part 33a can be attached / removed to / from the first frame part 21, and a longitudinal part 33b can be attached / removed to / from the second frame part 22 or the third frame part 23. A battery 42 is provided between the vertical part 33a and the second frame part 22, and is provided between the longitudinal part 33b and the first frame part 21.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a working vehicle of an electric type that obtains driving power by a motor, and a hybrid type working vehicle that obtains driving power by an engine and a motor.

Background Art

[0002] Some working vehicles are equipped with a body frame having a structure as disclosed in Patent Document 1. In Patent Document 1, the body frame has a first frame portion, a second frame portion extending upward from the rear portion of the first frame portion, and a third frame portion extending rearward from the upper portion of the second frame portion, and the riding portion is supported at a portion between the front wheels and the rear wheels in the body frame. In the body frame, a seat frame is connected across the first frame portion and the upper portion of the second frame portion, and the seat is supported by the seat frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a working vehicle equipped with a body frame as in Patent Document 1, when configuring an electric type working vehicle or a hybrid type working vehicle, it is necessary to provide a relatively large battery, so it is necessary to consider securing the battery placement space and the battery attachability.

[0005] An object of the present invention is to configure a working vehicle so that a battery can be appropriately provided in the body frame.

Means for Solving the Problems

[0006] The work vehicle of the present invention comprises a machine frame, a front wheel for driving supported at the front of the machine frame, a rear wheel for driving supported at the rear of the machine frame, a passenger seat supported in the portion of the machine frame between the front wheel and the rear wheel, a seat frame having an upper and lower portion along the vertical direction and a front and rear portion extending rearward from the upper part of the upper and lower portion, and supporting the seat of the passenger seat, a battery, and a motor that outputs driving power using the power of the battery, wherein the machine frame has a first frame portion located below the passenger seat, a second frame portion extending upward from the rear of the first frame portion, and a third frame portion extending rearward from the upper part of the second frame portion, the upper and lower portion of the seat frame is attachable to and detachable from the first frame portion, the front and rear portion is attachable to and detachable from the second frame portion or the third frame portion, and the battery is provided between the upper and lower portion and the second frame portion and between the front and rear portion and the first frame portion The aircraft is provided with a right seat frame and a left seat frame, and the battery is positioned such that its right end is to the right and outward of the right seat frame, and its left end is to the left and outward of the left seat frame, and it is positioned in a manner that it extends continuously from the position to the right and outward of the right seat frame to the position to the left and outward of the left seat frame, and side guards are provided on the left and right outward sides of the battery such that they overlap with the battery when viewed from the side of the aircraft. .

[0007] According to the present invention, the aircraft frame has a first frame portion located below the passenger compartment, a second frame portion extending upward from the rear of the first frame portion, and a third frame portion extending rearward from the upper part of the second frame portion. In a seat frame that supports a seat, the upper and lower parts of the seat frame are attached to the first frame section, and the front and rear parts of the seat frame are attached to the second frame section (third frame section).

[0008] As a result, relatively large spaces are created between the upper and lower parts of the seat frame and the second frame, and between the front and rear parts of the seat frame and the first frame. Therefore, even with a relatively large battery, the aforementioned spaces can be effectively utilized to mount the battery on the machine frame without difficulty, thereby improving the driving performance of the work vehicle.

[0009] According to the present invention, when attaching the battery to the machine frame during the production of the work vehicle, or when replacing the battery, the seat frame (upper and lower parts and front and rear parts) can be removed from the first frame part and the second frame part (third frame part).

[0010] This design allows for easier installation and removal of the battery from the vehicle frame, as the seat frame does not obstruct the process. This improves the productivity and maintainability of the work vehicle.

[0011]

[0012] According to the present invention, by providing right and left seat frames, the seat can be supported with sufficient strength, and even seats with a large width, such as bench seats, can be supported without difficulty.

[0013] According to the present invention, the right end of the battery is located laterally to the right of the right seat frame, and the left end of the battery is located laterally to the left of the left seat frame, so that a battery that is long in the left-right direction is mounted on the machine frame. As a result, even a relatively large battery can be mounted on the machine frame without difficulty, and the driving performance of the work vehicle can be improved.

[0014] In the present invention, it is preferable that the backrest portion of the seat is provided so as to be attachable to and detachable from the aircraft frame.

[0015] According to the present invention, when attaching the battery to the machine frame during the production of the work vehicle, or when replacing the battery, in addition to removing the seat frame (upper and lower parts and front and rear parts) from the first frame part and the second frame part (third frame part), the backrest of the seat can also be removed from the machine frame.

[0016] As a result, when attaching the battery to the airframe or removing the battery from the airframe, the seat frame and the backrest of the seat do not interfere, so the battery can be easily attached to the airframe and removed from the airframe, improving the productivity and maintainability of the work vehicle.

Brief Description of the Drawings

[0017] [Figure 1] It is a left side view of the work vehicle. [Figure 2] It is a plan view of the work vehicle. [Figure 3] It is a left side view showing the airframe, roll bar frame, seat frame, battery, etc. [Figure 4] It is a plan view showing the airframe, seat frame, battery, etc. [Figure 5] It is an exploded left side view showing the airframe, roll bar frame, seat frame, battery, etc. [Figure 6] It is a cross-sectional plan view of the sensor support part and the hitch attachment part.

Modes for Carrying Out the Invention

[0018] In FIGS. 1 to 6, an example of a work vehicle, an electric multi-purpose work vehicle, is shown. In FIGS. 1 to 6, F indicates the front direction, B indicates the rear direction, U indicates the upward direction, D indicates the downward direction, R indicates the right direction, and L indicates the left direction.

[0019] (Overall Configuration of the Work Vehicle) As shown in FIGS. 1 and 2, an airframe 3 is provided. Right and left front wheels 1 for traveling (corresponding to a traveling device) are supported at the front part of the airframe 3, and right and left rear wheels 2 for traveling (corresponding to a traveling device) are supported at the rear part of the airframe 3. The airframe 3 is supported by the front wheels 1 and the rear wheels 2.

[0020] The passenger compartment 4 where the driver and the operator ride is supported by a portion between the front wheel 1 and the rear wheel 2 in the airframe frame 3, and the passenger compartment 4 is surrounded by the ROPS frame 5. The passenger compartment 4 is provided with a driver's seat 6 (equivalent to a seat), a passenger seat 7 (equivalent to a seat), a floor 8, a steering wheel 9 for steering the front wheel 1, and the like.

[0021] The bonnet 10 is provided on the front side with respect to the passenger compartment 4, and the loading platform 11 is provided on the rear side with respect to the passenger compartment 4. The loading platform 11 is capable of being lifted and lowered between a use posture shown by a solid line in FIG. 1 and a dump posture (refer to the two-dot chain line in FIG. 1) in which the front part of the loading platform 11 is lifted with the lower part of the rear part of the loading platform 11 as a fulcrum.

[0022] (Configuration of the airframe frame) As shown in FIGS. 1 to 4, the airframe frame 3 has a first frame portion 21, a second frame portion 22, a third frame portion 23, a fourth frame portion 24, a fifth frame portion 25, a sixth frame portion 26, a seventh frame portion 27, and the like.

[0023] The first frame portion 21 is located below the passenger compartment 4 (floor 8) and is provided along the front-rear direction. The second frame portion 22 is connected to the rear portion of the first frame portion 21 and extends upward from the rear portion of the first frame portion 21. The third frame portion 23 is connected to the upper portion of the second frame portion 22 and extends rearward from the upper portion of the second frame portion 22.

[0024] The fourth frame portion 24 is connected to the rear portion of the first frame portion 21 and extends rearward from the rear portion of the first frame portion 21. A frame 28 along the left-right direction is connected across the rear portions of the right and left fourth frame portions 24. A frame 29 along the up-down direction is connected across the rear portion of the third frame portion 23 and the rear portion of the fourth frame portion 24.

[0025] The fifth frame section 25 is connected to the front of the first frame section 21 and extends forward from the front of the first frame section 21. The vertically oriented frame 30 is connected to the front of the first frame section 21 and extends upward from the front of the first frame section 21.

[0026] The sixth frame section 26 is connected to the upper part of the frame 30 and extends forward from the upper part of the frame 30. The front guard 12 is connected across the front of the fifth frame section 25 and the front of the sixth frame section 26.

[0027] As shown in Figures 3 and 4, the right and left front support sections 15 are connected to the upper part of the frame 30, and the frame 13, which runs in the left-right direction, is connected across the right and left front support sections 15. The frame 14, which runs in the left-right direction, is connected across the front of the right and left third frame sections 23, and the right and left rear support sections 16 are connected to the right and left parts of the frame 14.

[0028] The seventh frame portion 27 is formed in a U-shape (channel shape) when viewed from the side, and the seventh frame The front upper part of the frame section 27 is connected to the front support section 15, and the rear upper part of the seventh frame section 27 is connected to the rear support section 16. The floor 8 is connected across the front of the first frame section 21 and the front lower part of the seventh frame section 27. The right and left side guards 40 are connected across the rear support section 16 and the rear lower part of the seventh frame section 27.

[0029] (Configuration of the drive system) As shown in Figures 1 and 2, the rear wheels 2 are supported by a suspension mechanism (not shown) at the rear of the third frame section 23 and the rear of the fourth frame section 24. The transmission case 17 is supported by the fourth frame section 24, and the motor 18 is connected to the front of the transmission case 17.

[0030] A sub-transmission (not shown) and a rear differential (not shown) are provided inside the transmission case 17. Power from the motor 18 is transmitted to the sub-transmission, shifted, and then transmitted from the rear differential to the rear wheels 2 via the drive shaft 19.

[0031] The front wheel 1 is supported by a suspension mechanism (not shown) on the fifth frame section 25 and the sixth frame section 26, and the front differential device 20 is supported on the fifth frame section 25. Power branched from between the auxiliary transmission and the rear differential device in the transmission case 17 is transmitted to the front differential device 20 by the transmission shaft 31, and then transmitted from the front differential device 20 to the front wheel 1 via the drive shaft 32.

[0032] (Configuration of the rops frame) As shown in Figures 2, 3, and 4, the lops frame 5 has a right and left first part 5a, a second part 5b, a third part 5c, and so on.

[0033] The first part 5a of the LOPS frame 5 is formed in an inverted U-shape (inverted channel shape) when viewed from the side. The second part 5b of the LOPS frame 5 is provided along the left-right direction and is connected across the front parts of the right and left first parts 5a of the LOPS frame 5. The third part 5c of the LOPS frame 5 is provided along the left-right direction and is connected across the rear parts of the right and left first parts 5a of the LOPS frame 5.

[0034] The front lower part of the first section 5a of the lops frame 5 is connected to the front support section 15 by bolts (not shown), and the rear lower part of the first section 5a of the lops frame 5 is connected to the rear support section 16 by bolts (not shown). In this configuration, the lops frame 5 is attached to the aircraft frame 3.

[0035] The Lops frame 5 can be removed from the aircraft frame 3 by removing the front lower part of the first part 5a of the Lops frame 5 from the front support part 15 and removing the rear lower part of the first part 5a of the Lops frame 5 from the rear support part 16.

[0036] (Configuration of the seat frame supporting the driver's seat and passenger seat) As shown in Figures 3, 4, and 5, right and left seat frames 33 are provided. The seat frame 33 is formed by bending a square pipe into an L-shape (angle shape), and has an upper and lower portion 33a that runs vertically, and a front and rear portion 33b that extends rearward from the upper part of the upper and lower portion 33a.

[0037] In the seat frame 33, the support portion 33c is connected to the upper part of the upper and lower portion 33a of the seat frame 33 (the front part of the front and rear portion 33b). The support portion 33d is connected to the rear part of the front and rear portion 33b of the seat frame 33.

[0038] In the aircraft frame 3, a mounting portion 21a is provided at the rear of the first frame portion 21, and a mounting portion 22a is provided at the upper part of the second frame portion 22. In the seat frame 33, the lower part of the upper and lower portion 33a of the seat frame 33 can be attached to and detached from the mounting portion 21a of the first frame portion 21 by bolts 34, and the rear part of the front and rear portion 33b of the seat frame 33 can be attached to and detached from the mounting portion 22a of the second frame portion 22 by bolts 34.

[0039] (Installation status of the driver's seat and passenger seat) As shown in Figures 3, 4, and 5, a rectangular pipe-shaped support frame 35 is provided, and multiple support points 35a are provided on the support frame 35. The support frame 35 can be attached to and removed from the support portion 33c of the seat frame 33 by bolts 36.

[0040] As shown in Figures 1 and 2, the driver's seat 6 is provided with a separate seat portion 6a and backrest portion 6b, and the passenger seat 7 is provided with a separate seat portion 7a and backrest portion 7b. As shown in Figures 3 and 5, a flat support member 37 is provided, with a leg portion 37a attached to the lower front part of the support member 37, and the seat portions 6a and 7a of the driver's seat 6 and passenger seat 7 are attached to the support member 37. The leg portion 37a of the support member 37 is attached to the pivot point portion 35a of the support frame 35 so as to be able to swing around an axis along the left-right direction.

[0041] A flat support member 38 is provided, and the backrests 6b and 7b of the driver's seat 6 and passenger seat 7 are attached to the support member 38. The support member 38 can be attached to and removed from the right and left first portions 5a of the lop frame 5 by bolts 39.

[0042] With the above configuration, in normal use, the front part of the support member 37 is supported by the seat frame 33 via the support frame 35, and the rear part of the support member 37 is supported by the support portion 3d of the seat frame 33.

[0043] As a result, the seat portion 6a of the driver's seat 6 and the seat portion 7a of the passenger seat 7 are supported by the seat frame 33, and are supported by the aircraft frame 3 via the seat frame 33. The backrest portion 6b of the driver's seat 6 and the backrest portion 7b of the passenger seat 7 are supported by the LOPS frame 5, and are supported by the aircraft frame 3 via the LOPS frame 5.

[0044] By using the pivot point 35a of the support frame 35 as a fulcrum and lifting the rear of the support member 37 upward, the area above the seat frame 33 can be opened. By removing the bolt 36 and detaching the support frame 35 from the seat frame 33, the seat portion 6a of the driver's seat 6 and the seat portion 7a of the passenger seat 7 can be detached from the seat frame 33.

[0045] By removing the bolt 39 and detaching the support member 38 from the lops frame 5, the backrest portion 6b of the driver's seat 6 and the backrest portion 7b of the passenger seat 7 can be detached from the aircraft frame 3.

[0046] (Battery and inverter configuration) As shown in Figures 3, 4, and 5, a flat support member 41 is connected to the rear of the first frame portion 21 along the left-right direction in the aircraft frame 3. The battery 42 is attached to the support member 41 in a manner that allows it to be attached and detached by bolts (not shown).

[0047] With the battery 42 attached to the support member 41, the battery 42 is located in a side view between the upper and lower portion 33a of the seat frame 33 and the second frame portion 22, and between the front and rear portion 33b of the seat frame 33 and the first frame portion 21.

[0048] In a plan view, the rightmost end 42a of the battery 42 is located laterally to the right of the right seat frame 33, and is located towards the left-right center of the aircraft frame 3, relative to the right seventh frame portion 27 and the right side guard 40. In a side view, the rightmost end 42a of the battery 42 overlaps with the right seventh frame portion 27 and the right side guard 40.

[0049] In a plan view, the left end 42b of the battery 42 is located laterally to the left of the left seat frame 33, and is located towards the left-right center of the aircraft frame 3, relative to the left seventh frame section 27 and the left side guard 40. In a side view, the left end 42b of the battery 42 overlaps with the left seventh frame section 27 and the left side guard 40.

[0050] Flat support members 43 are attached to the front and rear portions 33b of the right and left seat frames 33 so as to be removable by bolts (not shown). The inverter 44 and control device 45 are attached to the support members 41, and in a side view, the inverter 44 and control device 45 are located between the seat portions 6a, 7a of the driver's seat 6 and passenger seat 7 (support members 37) and the battery 42 (front and rear portions 33b of the seat frame 33).

[0051] When the driver seated in the driver's seat 6 operates the gear shift pedal (not shown), the operating position of the gear shift pedal is input to the control device 45, and the inverter 44 is operated by the control device 45 based on the operating position of the gear shift pedal. In the inverter 44, the DC power from the battery 42 is converted to AC power and supplied to the motor 18, the motor 18 operates and outputs power for driving, and the driving power from the motor 18 is supplied to the front wheels 1 and rear wheels 2 as described above.

[0052] (Maintenance of batteries and inverters) As shown in Figures 3, 4, and 5, by using the pivot point 35a of the support frame 35 as a pivot point and lifting the rear of the support member 37 upward, the area above the seat frame 33 is opened up as described above.

[0053] By lifting the support member 37, maintenance work on the inverter 44 and control device 45 can be performed. By removing the support member 43 from the seat frame 33, the inverter 44 and control device 45 can be removed. By lifting the support member 37 and removing the inverter 44 and control device 45, maintenance work on the battery 42 can be performed.

[0054] As described above, by removing the support frame 35 from the seat frame 33, and removing the seat portion 6a (seat) of the driver's seat 6 and the seat portion 7a (seat) of the passenger seat 7 from the seat frame 33, the bolts 34 can be removed, and the seat frame 33 can be removed from the aircraft frame 3 (first frame portion 21 and second frame portion 22).

[0055] By removing the seat frame 33 from the aircraft frame 3 (first frame portion 21 and second frame portion 22), the battery 42 can be removed from the aircraft frame 3 (support member 41), and the battery 42 can be attached to the aircraft frame 3 (support member 41).

[0056] In this case, as mentioned above, removing the bolt 39 to detach the support member 38 from the lops frame 5, and removing the backrest portion 6b of the driver's seat 6 and the backrest portion 7b of the passenger seat 7 from the aircraft frame 3 makes it even easier to install and remove the battery 42.

[0057] In addition to removing the backrest portion 6b of the driver's seat 6 and the backrest portion 7b of the passenger seat 7 from the aircraft frame 3, as described above, removing the front lower part of the first portion 5a of the lops frame 5 from the front support portion 15 and the rear lower part of the first portion 5a of the lops frame 5 from the rear support portion 16, thereby removing the lops frame 5 from the aircraft frame 3, makes it even easier to install and remove the battery 42.

[0058] (Configuration of the hitch mounting section) As shown in Figures 1 and 2, in the aircraft frame 3, a square pipe-shaped hitch mounting portion 46 is provided at the front end of the fifth frame portion 25, and a square pipe-shaped hitch mounting portion 47 is provided at the rear end (frame 28) of the fourth frame portion 24.

[0059] A hitch (not shown) for attaching a work device (not shown) can be attached to the hitch mounting sections 46 and 47, and the work device can be attached to the hitch, thereby allowing the work device to be mounted to the front or rear (both front and rear) of the machine frame 3. If the hitch is not needed, it can be removed from the hitch mounting sections 46 and 47.

[0060] By attaching a towing hitch (not shown) to the rear hitch mounting section 47, a trolley (not shown) can be connected to the hitch, allowing the work vehicle to tow the trolley. If a work vehicle becomes immobile on soft ground, a towing hitch can be attached to the hitch mounting sections 46 and 47. By attaching a wire (not shown) or the like to the hitch and having another work vehicle (not shown) tow the wire or the like, the work vehicle can be moved away from the soft ground. If the hitch is not needed, it can be removed from the hitch mounting sections 46 and 47.

[0061] (Configuration of the sensor support section) As shown in Figures 1 and 2, a sensor support portion 48 is provided. The sensor support portion 48 has a first portion 48a that runs in the left-right direction and a second portion 48b that is attached to the left-right central portion of the first portion 48a and runs in the front-rear direction, and the obstacle sensors 51 and 52 are supported by the first portion 48a.

[0062] The second portion 48b of the sensor support portion 48 is inserted into the hitch mounting portions 46 and 47, thereby attaching the sensor support portion 48 to the hitch mounting portions 46 and 47, and thus to the aircraft frame 3.

[0063] As shown in Figure 6, a fixing member 49 is provided, and the fixing member 49 has a main body portion 49a, a handle portion 49b, a receiving portion 49c, and a retaining portion 49d, etc. In the fixing member 49, the main body portion 49a is formed in the shape of a pin. The handle portion 49b held by the worker extends from the end of the main body portion 49a so as to intersect with the main body portion 49a. A washer-shaped receiving portion 49c is fixed to the middle part of the main body portion 49a. The retaining portion 49d is formed in the shape of a beta pin and can be attached to and detached from the end of the main body portion 49a.

[0064] After inserting the second portion 48b of the sensor support portion 48 into the hitch mounting portions 46 and 47, the main body portion 49a of the fixing member 49 is inserted into the openings of the hitch mounting portions 46 and 47 and the opening of the second portion 48b of the sensor support portion 48. The receiving portion 49c of the fixing member 49 is then pressed against the hitch mounting portions 46 and 47, and the retaining portion 49d of the fixing member 49 is attached to the end of the main body portion 49a. This allows the sensor support portion 48 to be attached and fixed to the hitch mounting portions 46 and 47.

[0065] By removing the retaining portion 49d of the fixing member 49 from the main body portion 49a, and removing the fixing member 49 from the hitch mounting portions 46 and 47, the second portion 48b of the sensor support portion 48 can be pulled out from the hitch mounting portions 46 and 47, and the sensor support portion 48 can be removed from the hitch mounting portions 46 and 47.

[0066] (Configuration of the obstacle sensor) As shown in Figures 1 and 2, the obstacle sensor 51 (corresponding to the first obstacle sensor) is supported in the left-right central portion of the first part 48a of the sensor support portion 48. The obstacle sensor 52 (corresponding to the second obstacle sensor) is supported by the first portion 48a of the sensor support portion 48, on the right and left sides relative to the obstacle sensor 51.

[0067] The obstacle sensor 51 is configured to detect obstacles using infrared or ultrasonic waves, and primarily detects obstacles located in front of (behind) the aircraft frame 3. A flat contact body 50 is provided on the obstacle sensor 52, and the obstacle sensor 52 detects an obstacle based on the contact body 50 coming into contact with the obstacle. In a plan view, the contact body 50 of the obstacle sensor 52 protrudes slightly in front (behind) the obstacle sensor 51.

[0068] When the sensor support portion 48 is attached to the hitch mounting portions 46 and 47, the first portion 48a of the sensor support portion 48 has a length that spans the right front wheel 1 and the left front wheel 1, and a length that spans the right rear wheel 2 and the left rear wheel 2.

[0069] When the sensor support portion 48 is attached to the hitch mounting portions 46 and 47, the right and left portions of the first portion 48a of the front sensor support portion 48 are positioned in front of the right and left front wheels 1. The right and left portions of the first portion 48a of the rear sensor support portion 48 are positioned behind the right and left rear wheels 2.

[0070] When the front sensor support portion 48 is attached to the hitch mounting portion 46, the front sensor support portion 48 (contact body 50 of the obstacle sensor 52) is located slightly in front of the front end of the front guard 12 in a side view.

[0071] When the rear sensor support 48 is attached to the hitch mounting part 47, the rear sensor support 48 (the contact body 50 of the obstacle sensor 52) is positioned slightly forward or approximately at the same position as the rear end of the cargo bed 11 in the operating state (shown by the solid line in Figure 1) when viewed from the side. As a result, even when the cargo bed 11 is operated to a dump position and soil is discharged downwards, the soil from the cargo bed 11 is less likely to hit the rear sensor support 48 (obstacle sensors 61, 52).

[0072] (First alternative embodiment of the invention) One or more seat frames 33 may be provided between the right and left seat frames 33, resulting in three or four or more seat frames 33. The rear portion of the front and rear section 33b of the seat frame 33 may be configured to be attachable and detachable to the front portion of the third frame section 23 by bolts 34.

[0073] (Second alternative embodiment of the invention) The seat frame 33 may be configured such that the seat portion 6a and backrest portion 6b of the driver's seat 6 are supported, and the seat portion 7a and backrest portion 7b of the passenger seat 7 are supported.

[0074] (Third alternative embodiment of the invention) The front driver's seat 6 and passenger seat 7, and the rear seats (not shown) may be mounted on the machine frame 3 to configure a four-seater work vehicle with two rows of seats. In this configuration, the battery 42 is placed under the rear seats, and the configuration shown in Figures 3, 4, and 5 can be applied to the rear seats. If the capacity of the battery 42 is insufficient when placed only under the rear seats, batteries 42 can also be placed under the driver's seat 6 and the passenger seat 7.

[0075] (Fourth alternative embodiment of the invention) The motor 18 may be configured as a rear-wheel drive type work vehicle, supplying power for driving to the rear wheels 2 but not to the front wheels 1. Instead of the front wheel 1, a crawler-type running gear (not shown) may be provided as the front running gear. Instead of the rear wheel 2, a crawler-type running gear (not shown) may be provided as the rear running gear. The front wheel 1 and rear wheel 2 may be configured with a single crawler-type running gear (not shown). [Industrial applicability]

[0076] The present invention can be applied not only to electric work vehicles whose running gear is driven by a motor, but also to hybrid work vehicles whose running gear is driven by both an engine and a motor. [Explanation of symbols]

[0077] 1 Front wheel 2 Rear wheels 3. Aircraft Frame 4. Boarding Area 6. Driver's seat 6b Backrest 7. Passenger seat (seat) 7b Backrest 18 motors 21. First frame portion 22 Second frame portion 23 Third frame section 33 Seat Frames 33a Upper and lower parts 33b Front and rear parts 42 batteries 42a Right end 42b Left end

Claims

1. A frame for the aircraft, a front wheel for driving supported at the front of the aircraft frame, and a rear wheel for driving supported at the rear of the aircraft frame, A passenger seat supported in the portion of the aircraft frame between the front wheel and the rear wheel, A seat frame that supports the seat of the passenger compartment, having upper and lower portions aligned in the vertical direction and front and rear portions extending rearward from the upper part of the upper and lower portions, It is equipped with a battery and a motor that outputs power for driving using the power of the battery, The aircraft frame comprises a first frame portion located below the passenger compartment, a second frame portion extending upward from the rear of the first frame portion, and a third frame portion extending rearward from the upper part of the second frame portion. In the aforementioned seat frame, the upper and lower portions are detachable from the first frame portion, and the front and rear portions are detachable from the second frame portion or the third frame portion. The battery is provided between the upper and lower portion and the second frame portion, and between the front and rear portion and the first frame portion. The right seat frame and the left seat frame are provided. The battery is provided such that its right end is located to the right and outward of the right seat frame, its left end is located to the left and outward of the left seat frame, and it is positioned in a continuous manner across the position to the right and outward of the right seat frame and the position to the left and outward of the left seat frame. A work vehicle in which side guards are provided on the left and right outer sides of the aforementioned battery, such that they overlap with the battery when viewed from the side of the machine.

2. The work vehicle according to claim 1, wherein the backrest portion of the seat is provided so as to be attachable to and detachable from the machine frame.

Images