electric work vehicle

Abstract

This enables the miniaturization of electric work vehicles. [Solution] The electric work vehicle 10 comprises a vehicle body 11, a driver unit 13 mounted on the vehicle body 11, a battery 26 positioned in front of the driver unit 13, and a battery frame 56 that supports the battery 26 and is mounted on the vehicle body 11. The driver unit 13 includes a steering wheel 37 and a power steering device 38 connected to the steering wheel 37 to assist in the operation of the steering wheel 37, and the battery frame 56 has a mounting portion 80 for attaching the power steering device 38.

Description

Technical Field

[0001] This disclosure relates to an electric work vehicle.

Background Art

[0002] Patent Document 1 discloses an electric work vehicle (electric tractor) that travels and performs predetermined work by driving an electric motor. This electric work vehicle includes a vehicle body (vehicle main body) supported by left and right front wheels and rear wheels, and a driver's cab mounted on the vehicle body. A steering wheel and a power steering mechanism are provided at the front of the driver's cab. The power steering mechanism is attached to a pillar frame that rises upward from the vehicle body. A battery is mounted on the vehicle body on the front side of the pillar frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The electric work vehicle described in Patent Document 1 requires a pillar frame to provide a power steering mechanism. However, the presence of the pillar frame makes the vehicle body longer in the front - rear direction, preventing the electric work vehicle from being made more compact. An object of this disclosure is to enable the electric work vehicle to be made more compact.

Means for Solving the Problems

[0005] The electric work vehicle of this disclosure is a vehicle body, a driver's cab mounted on the vehicle body, a battery disposed in front of the driver's cab, The battery frame supports the battery and is mounted on the vehicle body, The aforementioned driving unit includes a steering wheel and a power steering device connected to the steering wheel and assisting in the operation of the steering wheel. The battery frame has a mounting portion for attaching the power steering device. [Effects of the Invention]

[0006] According to this disclosure, it is possible to make electric work vehicles more compact. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a side view of the electric work vehicle. [Figure 2] Figure 2 is a schematic side view showing the battery support structure. [Figure 3] Figure 3 is a cross-sectional view along line AA in Figure 2. [Figure 4] Figure 4 is an exploded perspective view of the battery, battery frame, and power steering system. [Figure 5] Figure 5 is a cross-sectional view along line BB in Figure 2. [Figure 6] Figure 6 is a block diagram showing an example of the configuration of an electric work vehicle. [Modes for carrying out the invention]

[0008] <Summary of the embodiments of this disclosure> The embodiments of this disclosure are outlined below. (1) The electric work vehicle according to this embodiment is The vehicle body and The vehicle body includes an operating unit, A battery located in front of the aforementioned driver's unit, The battery frame supports the battery and is mounted on the vehicle body, The operation unit includes a steering wheel and a power steering device connected to the steering wheel to assist the operation of the steering wheel. The battery frame has an attachment portion for attaching the power steering device.

[0009] According to the above configuration, since the power steering device is attached to the attachment portion of the battery frame, a pillar frame as in the prior art is not required, and accordingly, the electric work vehicle can be made more compact in the front-rear direction.

[0010] (2) In the electric work vehicle according to (1) above, the battery frame has a rear support portion disposed on the rear side of the battery. The attachment portion protrudes rearward from the rear support portion.

[0011] (3) In the electric work vehicle according to (2) above, the attachment portion is located above the lower end of the battery frame. According to this configuration, a space can be formed below the attachment portion, and this space can be used to widely secure the space around the driver's feet or to arrange other components.

[0012] (4) In the electric work vehicle according to any one of (1) to (3) above, the operation unit has a meter panel. The battery frame has a second attachment portion for attaching the meter panel. According to this configuration, by using the battery frame, not only the power steering device but also the meter panel provided in the operation unit can be attached.

[0013] (5) In the electric work vehicle according to (4) above, the second attachment portion is provided above the attachment portion.

[0014] (6) In the electric work vehicle according to any one of (1) to (5) above, the battery frame has a partition board that partitions the front end of the operation unit.

[0015] (7) The battery-operated work vehicle according to any one of (1) to (6) above has a frame member that faces the side surface of the battery with a gap therebetween, and a buffer member that is compressed by relative movement in the facing direction between the battery and the frame member. According to this configuration, the vibration of the battery-operated work vehicle can be absorbed by the buffer member, and it is possible to suppress the vibration from being transmitted to the battery.

[0016] (8) In the battery-operated work vehicle according to (7) above, the buffer member is disposed on the outer surface of the frame member, and the battery frame has a fixing member that is fixed to the battery in a state where the buffer member is sandwiched between the battery frame and the frame member.

[0017] <Details of Embodiments of the Present Disclosure> Hereinafter, details of embodiments of the present disclosure will be described with reference to the drawings. [Overall Configuration of Battery-Operated Work Vehicle] FIG. 1 is a side view of the battery-operated work vehicle. In this specification, the direction in which the battery-operated work vehicle 10 moves forward is defined as the front, the direction in which the battery-operated work vehicle 10 moves backward is defined as the rear, the left side when the battery-operated work vehicle 10 faces forward is defined as the left, and the right side when the battery-operated work vehicle 10 faces forward is defined as the right.

[0018] As shown in FIG. 1, the battery-operated work vehicle 10 of the present embodiment is a vehicle used for agricultural work, specifically, a tractor. However, the battery-operated work vehicle 10 is not limited to a tractor, and may be a moving body such as an agricultural machine, a construction machine, and a utility vehicle.

[0019] As shown in Figure 1, the electric work vehicle 10 comprises a vehicle body 11, a running gear 12, an operating unit 13, and work devices 14 and 15. The vehicle body 11 includes a machine frame 21 and a transmission case 22. The machine frame 21 is formed to be long in the front-to-rear direction so as to extend substantially over the entire length of the vehicle body 11 in the front-to-rear direction. The machine frame 21 is constructed by connecting, for example, strip-shaped plate material into a frame shape. The transmission case 22 is located at the rear of the machine frame 21.

[0020] The vehicle body 11 includes a hood 24 and left and right rear wheel fenders 25. The hood 24 covers equipment located at the front of the vehicle frame 21. This equipment includes, for example, a battery 26, an inverter 27, and an electric motor 28. The rear wheel fenders 25 are mudguards that cover the outer circumference of the left and right rear wheels 12B, mainly above the rear wheels 12B, which will be described later.

[0021] The running gear 12 supports the vehicle body 11 so that it can move. The running gear 12 includes left and right front wheels 12A and left and right rear wheels 12B, which are the running wheels. The front wheels 12A and rear wheels 12B consist of annular tires. The left and right front wheels 12A are mounted on a front axle case supported at the front of the machine frame 21. The left and right rear wheels 12B are mounted on a rear axle case that protrudes from both the left and right sides of the transmission case 22. The front wheels 12A and rear wheels 12B are driven by an electric motor 28. The front wheels 12A and rear wheels 12B are not limited to tires and may be in other forms such as crawlers.

[0022] The driver's unit 13 is located on the vehicle body 11. The driver's unit 13 includes a driver's seat 31, driver's floor 32, locomotive frame 33, instrument panel 34, and control devices 35, etc. The driver's seat 31 is located above the transmission case 22. The driver's seat 31 is the part where the driver sits to operate and run the electric work vehicle 10. The driver's seat 31 is located between the left and right rear wheel fenders 25.

[0023] The driver's floor 32 is located in front of the driver's seat 31 and is situated on the aircraft frame 21. The driver's floor 32 is the area where the driver, seated in the driver's seat 31, rests their feet. The driver's floor 32 is equipped with control pedals (not shown) and the like that can be operated by the driver's feet while seated in the driver's seat 31.

[0024] The lops frame 33 extends upward from the rear end of the aircraft frame 21. The lops frame 33 is formed in a gate shape (downward U-shape) when viewed from the front, and its lower end is connected to the aircraft frame 21. The lops frame 33 is located behind the driver's seat 31 and protects the driver seated in the driver's seat 31. The driver's compartment 13 may have a cabin covering the driver's seat 31, driver's floor 32, etc., instead of the lops frame 33.

[0025] The steering system 35 includes a steering wheel 37 and a power steering system 38. The steering wheel 37 is located in front of the driver's seat 31 and above the driver's floor 32. The steering wheel 37 is annular in shape and rotates around its central axis to control the left-right direction of the front wheels 12A. The steering wheel 37 is connected to the upper end of the power steering system 38. The power steering system 38 in this embodiment is a hydraulic control unit for controlling a hydraulic cylinder 39 for steering that assists the steering force of the front wheels 12A, and switches the flow path of pressurized oil to the hydraulic cylinder 39 by operating the steering wheel 37. The instrument panel 34 is located in front of the steering wheel 37. The instrument panel 34 includes a speedometer, a battery charge meter, and the like.

[0026] Figure 6 is a block diagram showing an example of the configuration of an electric work vehicle. In Figure 6, solid arrows indicate the power supply system, dashed-dotted arrows indicate the power transmission system, and dotted arrows indicate the hydraulic supply system. The electric work vehicle 10 includes a battery 26, inverters 27 and 41, and electric motors 28 and 42. The battery 26 is a rechargeable battery and is configured to be rechargeable by charging equipment such as a charging station. The inverters 27 and 41 convert the DC power discharged from the battery 26 into AC power. The electric motors 28 and 42 are operated by the power supplied from the inverters 27 and 41.

[0027] The electric work vehicle 10 of this embodiment is equipped with two inverters 27, 41 and two electric motors 28, 42. One of the electric motors, 28, is part of the drive system and is powered by electricity supplied from one of the inverters, 27. It transmits power to a continuously variable transmission (CVT) 46 located in the transmission case 22. The CVT 46 is, for example, a hydrostatic transmission (HST). The CVT 46 can shift gears indefinitely in both forward and reverse directions and is operated by a gear shift pedal (not shown) located on the driver's floor 32.

[0028] The output of the continuously variable transmission 46 is transmitted to the rear differential 48 via the auxiliary transmission 47, which rotates the rear wheels 12B. In addition, the output of the continuously variable transmission 46 is transmitted to the front differential 50 via the auxiliary transmission 47 and the front transmission 49, which rotates the front wheels 12A. The power from the electric motor 28, transmitted via the continuously variable transmission 46, is transmitted to the PTO shaft 52 via the PTO transmission 51. The PTO shaft 52 transmits power to working equipment such as tillers and seeders, which are connected to a three-point linkage mechanism located at the rear of the vehicle body 11. Therefore, the electric motor 28 is also an electric motor of the PTO system.

[0029] The other electric motor 42 is an electric motor for the hydraulic work system and is operated by power supplied from the other inverter 41. The electric motor 42 drives the hydraulic pump 43. As shown in Figure 1, these electric motors 42, inverter 41, and hydraulic pump 43 are located above one of the rear wheels 12B (left side) and are covered from above by the rear wheel fender 25.

[0030] The hydraulic pump 43 compresses the hydraulic fluid and supplies it to the hydraulic equipment 14a and 15a via the control valve 44. The electric work vehicle 10 of this embodiment constitutes a so-called tractor loader backhoe (TLB), with a front loader 14 mounted on the front of the vehicle body 11 and a backhoe 15 mounted on the rear of the vehicle body 11. The front loader 14 has a plurality of hydraulic cylinders (hydraulic equipment) 14a for rotating the bucket and swinging the boom. The backhoe 15 has a plurality of hydraulic cylinders (hydraulic equipment) 15a for rotating the bucket and swinging the boom and arm. The hydraulic equipment also includes a lifting device for raising and lowering the three-point linkage mechanism and hydraulic cylinders for power steering to assist in steering the front wheels 12A.

[0031] Figure 2 is a schematic side view showing the battery support structure. Figure 3 is a cross-sectional view taken along line AA in Figure 2. As shown in Figures 2 and 3, the battery 26 is constructed by stacking multiple battery modules vertically. The battery 26 as a whole is formed in a substantially rectangular parallelepiped shape. The battery 26 is located at the front of the body frame 21 of the vehicle body 11. Specifically, the vehicle body 11 includes a mounting frame 54 placed on the front of the body frame 21, and the battery 26 is placed on this mounting frame 54. The battery 26 is supported by a battery frame 56. The battery 26 and the battery frame 56 are located approximately in the center of the vehicle body 11 in the left-right direction.

[0032] The aircraft frame 21 has a pair of left and right side plate members 21a. Each side plate member 21a is formed in the shape of a long strip in the front-rear direction, with its surface facing left-right. The mounting frame 54 also has a pair of left and right side plate members 54a. Each side plate member 54a is formed in a roughly C-shape when viewed from the front. The side plate members 54a are placed on mounting pieces 21b provided at the upper end of the side plate members 21a and are fixed to the side plate members 21a by fasteners 57 consisting of bolts and nuts.

[0033] Figure 4 is an exploded perspective view of the battery, battery frame, and power steering system. The battery frame 56 supports the battery 26 from the front-to-back, left-to-right, and below directions. The battery frame 56 is formed in the shape of a roughly rectangular box. The top of the battery frame 56 is open. The battery 26 is inserted into the battery frame 56 from above. Alternatively, the battery 26 can be inserted into the battery frame 56 from the side by removing the front-to-back or left-to-right side walls of the battery frame 56.

[0034] Mounting pieces 58 protruding in the left-right direction are provided at the lower ends of the left and right side walls of the battery frame 56. As shown in Figure 3, these mounting pieces 58 are attached to a mounting frame 54 fixed on the aircraft frame 21. The mounting pieces 58 are placed on the upper surface of the side plate member 54a of the mounting frame 54 and are fixed to the side plate member 54a by fasteners 59 consisting of bolts and nuts.

[0035] As shown in Figure 2, the drive / PTO system inverter 27 is located inside the mounting frame 54. The inverter 27 is located below the battery 26 and battery frame 56. The drive / PTO system electric motor 28 is located inside the mounting frame 54 and / or inside the machine frame 21. The electric motor 28 is located below the battery 26 and battery frame 56. As shown in Figure 3, the inverter 27 and electric motor 28 are located approximately in the center of the vehicle body 11 in the left-right direction.

[0036] As shown in Figure 4, the battery frame 56 has a plurality of frame members 61 to 65 that constitute the bottom wall and side walls. Specifically, the battery frame 56 has a bottom frame member 61, a left frame member 62, a right frame member 63, a front frame member 64, and a rear frame member 65. The bottom frame member 61, the left frame member 62, the right frame member 63, the front frame member 64, and the rear frame member 65 constitute support parts that support the battery 26 from below, the left side, the right side, the front side, and the rear side, respectively.

[0037] The bottom frame members 61 are positioned on both the lower front and lower rear sides of the battery 26, supporting the battery 26 from below. The front and rear bottom frame members 61 are each formed in the shape of a strip plate. The left and right ends of the bottom frame members 61 constitute the mounting pieces 58 described above.

[0038] Cushioning members 67 are attached to both the left and right sides of the upper surface of each bottom frame member 61. The cushioning members 67 are elastic members made of rubber, synthetic resin, or the like. The battery 26 is placed on the cushioning members 67 provided on each bottom frame member 61, and the cushioning members 67 absorb vibrations and shocks from below and suppress their transmission to the battery 26.

[0039] The left frame member 62 of the battery frame 56 has front and rear support columns 62a positioned adjacent to the front and rear sides of the left side of the battery 26, and a side member 62b connecting the front and rear support columns 62a. The right frame member 63 of the battery frame 56 has front and rear support columns 63a positioned adjacent to the front and rear sides of the right side of the battery 26, and a side member 63b connecting the front and rear support columns 63a.

[0040] Each support column 62a, 63a is made of a member formed to be elongated in the vertical direction, for example, by bending a plate material into a roughly C-shape when viewed from above. Each support column 62a, 63a is positioned opposite the left and right sides of the battery 26 and is arranged roughly parallel to each side. The side members 62b, 63b are made of a member formed to be elongated in the front-rear direction, for example, by bending a plate material into a roughly C-shape when viewed from the front. The side members 62b, 63b are spanned between the lower and upper sides of the front and rear support columns 62a, 63a.

[0041] The front frame member 64 of the battery frame 56 consists of a long member in the left-right direction, and is formed, for example, by bending a plate material into a roughly L-shape when viewed from the side. The front frame member 64 is spanned between the upper ends of the front support columns 62a and 63a of the left frame member 62 and the right frame member 63.

[0042] The rear frame member 65 of the battery frame 56 is made of a member that is elongated in the left-right direction and is formed, for example, from a square pipe. The rear frame member 65 is spanned between the upper ends of the rear support columns 62a and 63a of the left frame member 62 and the right frame member 63, and between the upper and lower intermediate sections.

[0043] The battery frame 56 has a bottom wall and front, rear, left, and right side walls composed of multiple frame members 61 to 65, and openings are formed in the bottom wall and side walls. This makes the battery frame 56 lighter and improves the heat dissipation of the battery 26.

[0044] Figure 5 is a cross-sectional view along line BB in Figure 2. The battery 26 is supported on the bottom frame member 61 of the battery frame 56 via a cushioning member 67, and also on the left frame member 62 and the right frame member 63 via cushioning members 69. Specifically, the battery 26 and the battery frame 56 are connected by connecting bolts 71, and the cushioning members 69 are attached to these connecting bolts 71.

[0045] As shown in Figure 3, the distance L1 between the left and right frame members 62 and 63 in the battery frame 56 is greater than the width W1 of the battery 26 in the left-right direction. Furthermore, as shown in Figure 5, the left and right frame members 62 and 63 (support columns 62a and 63a) of the battery frame 56 are positioned opposite each other with a gap t between them on the side of the battery 26.

[0046] The connecting bolt 71 has a head portion 71a located at one end (the left end in Figure 5), a male threaded portion 71b located at the other end (the right end in Figure 5), and a flange portion 71c and a large-diameter shaft portion 71d located between the head portion 71a and the male threaded portion 71b.

[0047] The head 71a of the connecting bolt 71 has a hexagonal outer surface that can be engaged with a tool such as a wrench. The male thread portion 71b is cylindrical in shape, and male threads are formed on its outer surface. The flange portion 71c is positioned adjacent to the head 71a.

[0048] The flange portion 71c of the connecting bolt 71 is formed in a disc shape and protrudes radially outward from the head portion 71a. The large-diameter shaft portion 71d is positioned between the flange portion 71c and the male thread portion 71b. The large-diameter shaft portion 71d is cylindrical in shape, having a larger diameter than the male thread portion 71b and a smaller diameter than the flange portion 71c.

[0049] An annular washer 72 and an annular cushioning member 69 are fitted to the outer circumferential surface of the large-diameter shaft portion 71d. Through holes 62c and 63c are formed in the support columns 62a and 63a, into which the large-diameter shaft portion 71d of the connecting bolt 71 can be inserted. On the side surface of the battery 26 facing the support columns 62a and 63a, a female screw hole 26a is formed, into which the male screw portion 71b of the connecting bolt 71 can be fastened.

[0050] When the large-diameter shaft portion 71d of the connecting bolt 71 is inserted into the through hole 62c and the male threaded portion 71b is fastened into the female threaded hole 26a, the washer 72 and the cushioning member 69 are positioned between the outer surface of the support column 62a and the flange portion 71c of the connecting bolt 71. Therefore, when the battery 26 moves in a direction that widens the gap t between it and the support column 62a (to the right in Figure 5), the cushioning member 69 is compressed, absorbing the vibrations and shocks associated with the movement.

[0051] Since the battery 26 is connected to the left and right frame members 62 and 63 on both the left and right sides by connecting bolts 71, the cushioning member 69 absorbs shocks and vibrations regardless of whether the battery 26 moves to the left or right.

[0052] As described above, the battery frame 56 of this embodiment has frame members 62 and 63 that face the side of the battery 26 with a gap t between them, and a buffer member 69 that is compressed by the relative movement of the battery frame 56 and the battery 26 in the opposing direction (left-right direction). The buffer member 69 is also arranged on the outer surface of the frame members 62 and 63, and the battery frame 56 has a fixing member (connecting bolt) 71 that fixes the battery 26 with the buffer member 69 sandwiched between the frame members 62 and 63.

[0053] Since the battery 26 is supported by the battery frame 56 via the cushioning members 67 and 69, vibrations associated with the driving and operation of the electric work vehicle 10 can be suppressed from being transmitted from the battery frame 56 to the battery 26, thereby suppressing damage to the battery 26. Furthermore, if the battery 26 is not connected to the battery frame 56 via the cushioning members 67 and 69, it would be necessary to firmly connect them using many bolts or the like to prevent relative movement between them. However, by interposing the cushioning members 67 and 69 between them as in this embodiment, the number of connecting bolts 71 can be reduced.

[0054] Since the connecting bolt 71 can be inserted into the battery frame 56 from the outside without being subjected to vertical or horizontal loads and connected (fastened) to the battery 26, the connection work to the battery 26 can be easily performed.

[0055] The cushioning member 69 may be provided between the battery 26 and the front frame member 64 and rear frame member 65 of the battery frame 56, and the cushioning member 69 may absorb shocks and vibrations caused by the movement of the battery 26 in the front-rear direction.

[0056] As shown in Figures 2 and 4, the battery frame 56 has a mounting portion 80 for attaching the power steering device 38. The mounting portion 80 is provided on the rear frame member (rear support portion) 65 of the battery frame 56. The mounting portion 80 has a pair of left and right mounting plates 81 that are formed in a substantially triangular shape in a side view.

[0057] One side of each mounting plate 81, located at the front end, is positioned approximately vertically and fixed to the rear frame member 65. The other side of the mounting plate 81, located at the upper end, is positioned slightly higher than the battery 26 in a nearly horizontal position. Yet another side of the mounting plate 81 is a slanted side extending diagonally upward and rearward (diagonally downward and frontward), forming the lower surface 80a of the mounting portion 80.

[0058] The lower surface 80a of the mounting portion 80 is positioned above the lower end of the battery frame 56. Therefore, as shown in Figure 2, a space S is formed below the mounting portion 80. This space S is further expanded below the battery frame 56 as the battery frame 56 is mounted on the aircraft frame 21 via the mounting frame 54.

[0059] Mounting holes 81a for attaching the power steering device 38 are formed at the rear end of each mounting plate 81. The power steering device 38 is attached to the mounting portion 80 by inserting it between a pair of mounting plates 81 and supporting it with a support shaft 83 such as a bolt inserted into the mounting hole 81a. The power steering device 38 is configured to swing back and forth with the support shaft 83 inserted into the mounting hole 81a as the pivot point. This configuration realizes the tilt steering function, which allows the steering wheel 37 to be adjusted in position back and forth.

[0060] As described above, by providing the mounting portion 80 for the power steering device 38 on the battery frame 56, it becomes unnecessary to raise a dedicated frame for mounting the power steering device 38 from the machine frame 21. Therefore, it is not necessary to secure space behind the battery 26 for arranging the dedicated frame, and the electric work vehicle 10 can be made more compact in the front-to-rear direction.

[0061] Furthermore, by providing a mounting section 80 on the battery frame 56, the structure of the mounting section 80 itself can be simplified and its weight reduced. The battery 26 is heavier than the engine in conventional engine-driven work vehicles (tractors). Therefore, by reducing the weight of the mounting section 80, the weight balance in the front-rear direction of the electric work vehicle 10 can be appropriately achieved, similar to engine-driven work vehicles.

[0062] The space S formed below the mounting portion 80 can be used to provide ample space for the driver's feet, to accommodate other components, or to serve as a workspace for piping and wiring.

[0063] As shown in Figure 2, a mounting base 85 is provided on the upper surface 80b of the mounting portion 80 (mounting plate 81). The mounting base 85 is made of a substantially horizontal plate. A mounting portion (second mounting portion) 87 for mounting the meter panel 34 is provided on this mounting base 85. This mounting portion 87 has a mounting surface 87a that is inclined upward and diagonally backward so that the meter panel 34 is easily visible to the driver sitting in the driver's seat 31, and the meter panel 34 is mounted on this mounting surface 87a.

[0064] By providing such a mounting portion 87 on the battery frame 56, it becomes unnecessary to raise a dedicated frame for mounting the meter panel 34 from the machine frame 21. Therefore, it is not necessary to secure space behind the battery 26 for the dedicated frame, making it possible to make the electric work vehicle 10 more compact in the front-to-rear direction. Furthermore, by providing the mounting portion 87 for the meter panel 34 on the mounting portion 80 for the power steering device 38, the configuration of the mounting portion 87 can be further simplified.

[0065] A partition plate 86 that rises upward is provided at the front end of the mounting base 85. This partition plate 86 is positioned with its surface facing the front-to-back direction. In this embodiment, the mounting base 85 and the partition plate 86 are constructed by bending a single plate material into a roughly L-shape when viewed from the side. The partition plate 86 is positioned in front of the mounting portion 87 for the meter panel 34. The upper end of the partition plate 86 is positioned higher than the mounting portion 87. The partition plate 86 is longer in the left-to-right direction than the mounting base 85 and the battery frame 56. The partition plate 86 is positioned above the battery 26.

[0066] As shown in Figure 2, the rear end of the bonnet 24 is detachably connected to the partition plate 86. The front end of the bonnet 24 is connected to the front end of the aircraft frame 21 or mounting frame 54 via a pivot shaft in the left-right direction so as to be able to swing back and forth, and the rear end can be connected to the partition plate 86 to maintain a closed state. By detaching the rear end of the bonnet 24 from the partition plate 86 and swinging the bonnet 24 forward, the battery 26 located inside the bonnet 24 can be exposed to the outside.

[0067] The partition plate 86 demarcates the front end of the driver's unit 13. In other words, the partition plate 86 separates the space inside the bonnet 24 where the battery 26 is located from the driver's unit 13. By providing such a partition plate 86 on the battery frame 56, it becomes unnecessary to raise the partition plate from the machine frame 21. Therefore, it is not necessary to secure space behind the battery 26 for the partition plate, making it possible to make the electric work vehicle 10 more compact in the front-to-rear direction. Furthermore, by providing the partition plate 86 on the mounting part 80 for the power steering device 38, the configuration of the partition plate 86 can be simplified.

[0068] The mounting portion 87 for the meter panel 34 and the partition plate 86 are both provided on the mounting portion 80 for the power steering device 38, and are formed as a single unit. Therefore, by assembling these 80, 86, and 87 into a single part and attaching this part to the battery frame 56, manufacturing can be made easier compared to attaching 80, 86, and 87 to the battery frame 56 individually.

[0069] (Other embodiments) The embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the present invention is not limited to the embodiments described above, and includes all modifications within the scope equivalent to the configurations described in the claims.

[0070] For example, in the above embodiment, a mounting portion 87 for the meter panel 34 was provided on the battery frame 56, but the mounting portion 87 may be separate from the battery frame 56. Also, in the above embodiment, a partition plate 86 was provided on the battery frame 56, but the partition plate 86 may be separate from the battery frame 56. [Explanation of Symbols]

[0071] 10: Electric work vehicle 11: Vehicle body 13: Driver's Unit 26: Battery 34: Meter panel 37: Control handle 38: Power steering system 56: Battery Frame 62: Left frame component 63: Right frame member 65: Rear frame member (rear support part) 69: Cushioning material 71: Connecting bolt (fixing member) 80: Mounting part 86: Partition board 87: Mounting section (second mounting section) t: gap

Claims

1. The vehicle body and The vehicle body includes an operating unit, A battery located in front of the aforementioned driver's unit, The battery frame supports the battery and is mounted on the vehicle body, The aforementioned driving unit includes a steering wheel and a power steering device connected to the steering wheel and assisting in the operation of the steering wheel. An electric work vehicle, wherein the battery frame has a mounting portion for attaching the power steering device.

2. The battery frame has a rear support portion located behind the battery, The electric work vehicle according to claim 1, wherein the mounting portion protrudes rearward from the rear support portion.

3. The electric work vehicle according to claim 2, wherein the mounting portion is located above the lower end of the battery frame.

4. The aforementioned operating unit has a meter panel, The electric work vehicle according to any one of claims 1 to 3, wherein the battery frame has a second mounting portion for attaching the meter panel.

5. The electric work vehicle according to claim 4, wherein the second mounting portion is provided on the upper part of the mounting portion.

6. The electric work vehicle according to any one of claims 1 to 3, wherein the battery frame has a partition plate that partitions the front end of the driving section.

7. The electric work vehicle according to any one of claims 1 to 3, wherein the battery frame comprises a frame member that faces the side of the battery with a gap between them, and a buffer member that is compressed by the relative movement of the battery and the frame member in the opposing direction.

8. The cushioning member is arranged on the outer surface of the frame member, The electric work vehicle according to claim 7, wherein the battery frame has a fixing member that is fixed to the battery with the cushioning member sandwiched between it and the frame member.

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