electric work vehicle

Abstract

To provide an electric work vehicle that can easily prevent an operator from erroneously removing a connection part provided at one end of an electric wire from an electric power port.SOLUTION: An electric work vehicle comprises: an electric wire 60 electrically connected to an electric power port; a connection part 70 provided at one end of the electric wire 60 and connected to the electric power port; and a locking mechanism 80 capable of locking in a state in which the connection part 70 is connected to the electric power port. The locking mechanism 80 is switchable between a locked state in which the connection part 70 is locked in a state of being connected to the electric power port in response to an operation of a manual operation tool 84 and a locking release state of permitting removal of the connection part 70 from the electric power port, and is provided with a restriction part 26 located midway along an operation locus K of the manual operation tool 84. The restriction part 26 is fixed to a machine body by a fixing tool b1 attached / detached using a tool.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to an electric work vehicle including a battery and a motor driven by electric power supplied from the battery. [Background Art]

[0002] As the electric work vehicle as described above, for example, one described in Patent Document 1 is already known. This electric work vehicle travels by a traveling device (a "front wheel" and a "rear wheel" in Patent Document 1) driven by a motor (an "electric motor" in Patent Document 1). Electric power from the battery is supplied to the motor via an electric wiring (an "electric wire" in Patent Document 1). [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2013-248918 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] Patent Document 1 does not describe the structure of a connection portion between an electric wiring and a battery. Here, in the electric work vehicle described in Patent Document 1, a configuration is conceivable in which a power port is provided on a side portion of the battery and a connection portion is connected to the power port. The connection portion is provided at one end of the electric wiring.

[0005] With this configuration, a configuration in which electric power from the battery is supplied to the motor via the electric wiring can be easily realized with a relatively simple structure. However, in this configuration, if an operator accidentally removes the connection portion from the power port, the motor cannot be driven. This may cause situations such as, for example, the electric work vehicle becoming unable to travel.

[0006] The objective of the present invention is to provide an electric work vehicle that makes it easier for workers to avoid accidentally disconnecting a connection part provided at one end of an electrical wiring harness from a power port. [Means for solving the problem]

[0007] The present invention is characterized by comprising a battery, a motor driven by power supplied from the battery, a traveling device driven by the motor, and a power port provided on the side of the battery, wherein the power port is an input port into which power is input to the battery, or an output port into which power is output from the battery, and comprises electrical wiring electrically connected to the power port, a connection part provided at one end of the electrical wiring and connected to the power port, and a locking mechanism capable of locking the connection part in the state connected to the power port, wherein the locking mechanism is Equipped with a human-operated device, human control tool but operation By changing posture The connection is configured to be switchable between a locked state in which the connection is locked while connected to the power port, and an unlocked state that allows the connection to be removed from the power port, and the manual operating tool Change of posture The system includes a restricting section located in the middle of the operating trajectory, and this restricting section is fixed to the aircraft by a fastener that can be attached and detached using a tool.

[0008] In this configuration, the connector is locked in place by a locking mechanism while connected to the power port. Therefore, to disconnect the connector from the power port, the operator must use a manual tool. This makes it less likely for the operator to accidentally disconnect the connector from the power port compared to configurations without a locking mechanism or manual tool.

[0009] Furthermore, this configuration includes a restricting section located in the middle of the operating trajectory of the manual control tool, and the restricting section is fixed to the machine body by a fastener that can be attached and detached using a tool. Therefore, in order to operate the manual control tool, it is necessary to remove the fastener using a tool and then remove the restricting section. This makes it easier to avoid situations where the operator accidentally operates the manual control tool.

[0010] Based on the above, this configuration makes it possible to realize an electric work vehicle that makes it easier to avoid situations in which workers accidentally disconnect the connection part provided at one end of the electrical wiring from the power port.

[0011] Furthermore, in the present invention, it is preferable that the restricting portion is fixed to the battery by the fixing device.

[0012] In this configuration, the regulating unit is supported by the battery. This makes it easier to stably support the regulating unit.

[0013] Furthermore, in the present invention, the restricting portion is preferably a connection portion cover that covers the connection portion.

[0014] This configuration allows the restricting part to protect the connection part. Thus, the restricting part has the function of protecting the connection part. As a result, it is easier to suppress an increase in the number of components while achieving protection for the connection part.

[0015] Furthermore, in the present invention, it is preferable that the restricting portion has a shape that is open downwards.

[0016] With this configuration, heat is less likely to accumulate in the space covered by the restricting portion compared to cases where the restricting portion is not open at the bottom. As a result, there is no need to provide a dedicated component to dissipate the heat from the space covered by the restricting portion. Consequently, it is easier to suppress increases in manufacturing costs.

[0017] Furthermore, in the present invention, it is preferable that the upper surface of the restricting portion is inclined.

[0018] According to this configuration, foreign matter such as sand that has contacted the upper surface of the restricting portion easily falls along the slope of the upper surface of the restricting portion. This makes it difficult for foreign matter such as sand to accumulate on the upper surface of the restricting portion.

[0019] Furthermore, in the present invention, it is preferable that a plurality of wiring structures including the power port, the electric wiring, the connecting portion, the lock mechanism, and the manual operation tool are provided, the plurality of manual operation tools are arranged side by side, the restricting portion is formed of a single member, and the restricting portion is arranged to extend over each of the operation trajectories of the plurality of manual operation tools.

[0020] According to this configuration, the operation of the plurality of manual operation tools is restricted by the restricting portion formed of a single member. As a result, the number of members tends to be reduced compared to a case where a plurality of restricting portions corresponding to a plurality of manual operation tools are provided.

[0021] Another feature of the present invention includes a battery, a motor driven by electric power supplied from the battery, a traveling device driven by the motor, and a power port provided on a side portion of the battery, wherein the power port is an input port through which electric power is input to the battery or an output port through which electric power is output from the battery, and the present invention includes an electric wiring electrically connected to the power port, a connecting portion provided at one end of the electric wiring and connected to the power port, and a connecting portion cover that covers the connecting portion. The device comprises a cover member that covers the battery, the cover member being configured to open and close by swinging around a pivot axis along the left-right direction of the device, a support arm covered by the cover member being configured to swing up and down around its base end, and the support arm being configured to support the cover member in an open state by bringing the free end of the support arm into contact with the cover member from below when the support arm is in an upright position, and the support arm being supported by the connection cover. wherein.

[0022] According to this configuration, the connecting portion is covered by the connecting portion cover. As a result, compared to a configuration in which no connecting portion cover is provided, it is difficult for an operator to accidentally remove the connecting portion from the power port.

[0023] Therefore, according to this configuration, it is possible to realize an electric work vehicle that can easily avoid a situation where an operator accidentally removes the connecting portion provided at one end of the electric wiring from the power port. In this configuration, the connecting part cover has the function of supporting the support arm. As a result, it is easier to suppress an increase in the number of components while still providing support for the support arm.

[0024]

[0025]

[0026]

[0027]

[0028]

[0029]

[0030] Another feature of the present invention is a battery, a motor driven by power supplied from the battery, a traveling device driven by the motor, and a power port provided on the side of the battery, wherein the power port is an input port into which power is input to the battery, or an output port into which power is output from the battery, and the present invention also includes electrical wiring electrically connected to the power port, a connection part provided at one end of the electrical wiring and connected to the power port, and a connection part cover covering the connection part. comprising: a power feeding portion to which a charger can be connected and which is electrically connected to the battery via the electric wiring, wherein the power feeding portion is supported by the connection portion cover In particular .

[0031] According to this configuration, the connection portion cover has a function of supporting the power feeding portion. As a result, it is easy to suppress an increase in the number of members while achieving support of the power feeding portion.

[0032] Another feature of the present invention is a battery, a motor driven by power supplied from the battery, a traveling device driven by the motor, and a power port provided on the side of the battery, wherein the power port is an input port into which power is input to the battery, or an output port into which power is output from the battery, and the present invention also includes electrical wiring electrically connected to the power port, a connection part provided at one end of the electrical wiring and connected to the power port, and a connection part cover covering the connection part. comprising: a radiator; and a radiator frame that supports the radiator, wherein the connection portion cover is supported by the radiator frame In particular .

[0033] According to this configuration, the radiator frame has a function of supporting the connection portion cover. As a result, it is easy to suppress an increase in the number of members while achieving support of the connection portion cover.

[0034] Another feature of the present invention is a battery, a motor driven by power supplied from the battery, a traveling device driven by the motor, and a power port provided on the side of the battery, wherein the power port is an input port into which power is input to the battery, or an output port into which power is output from the battery, and the present invention also includes electrical wiring electrically connected to the power port, a connection part provided at one end of the electrical wiring and connected to the power port, and a connection part cover covering the connection part. an upper portion of the connection portion cover is placed on an upper portion of the battery In particular .

[0035] According to this configuration, when attaching the connection portion cover to a vehicle body, an operator can place the upper portion of the connection portion cover on the upper portion of the battery. This tends to facilitate the work of attaching the connection portion cover to the vehicle body.

[0036] Another feature of the present invention is a battery, a motor driven by power supplied from the battery, a traveling device driven by the motor, and a power port provided on the side of the battery, wherein the power port is an input port into which power is input to the battery, or an output port into which power is output from the battery, and the present invention also includes electrical wiring electrically connected to the power port, a connection part provided at one end of the electrical wiring and connected to the power port, and a connection part cover covering the connection part.The connection cover has a first wall and a second wall in a vertical position, the first wall and the second wall facing each other, the distance between the first wall and the second wall corresponds to the width of the battery in the direction of approach and separation between the first wall and the second wall, and when the connection cover is attached to the aircraft, the first wall and the second wall sandwich the battery. In particular be.

[0037] In this configuration, the first and second walls function as guides when the operator attaches the connection cover to the machine. This makes the process of attaching the connection cover to the machine easier.

[0038] Furthermore, in the present invention, it is preferable that the connection cover is supported by the battery. With this configuration, the connector cover is more easily and stably supported. Furthermore, in the present invention, it is preferable that the connecting part cover is divided into a plurality of cover bodies. With this configuration, when performing maintenance work on a part covered by one of the multiple cover bodies, the worker can access that part by removing that one cover body. Therefore, it is not necessary to remove the entire connection cover in order to access that part. This makes maintenance work easier. Furthermore, in the present invention, it is preferable that the invention comprises a plurality of power ports and a plurality of connection parts corresponding to the plurality of power ports, wherein the plurality of connection parts are arranged side by side, and the connection part cover is made of a single material and is arranged to cover the plurality of connection parts.

[0039] In this configuration, multiple connection points are covered by a single-component connection cover. This tends to reduce the number of components compared to a system where multiple connection covers are provided for each connection point.

[0040] Furthermore, in the present invention, it is preferable that the plurality of power ports include a power port for high current and a power port for low current.

[0041] In this configuration, the connection points connected to the high-voltage power port and the connection points connected to the low-voltage power port are covered by the connection point cover. This makes it easier to avoid situations where workers accidentally disconnect not only the connection points connected to the high-voltage power port, but also the connection points connected to the low-voltage power port. [Brief explanation of the drawing]

[0042] [Figure 1] This is a left side view of the tractor. [Figure 2] This is a left side view showing the configuration of the cover components, etc. [Figure 3] This is a left side view showing the structure of the lid and other components. [Figure 4] This diagram shows the arrangement of the power supply unit and other components when viewed from the direction of connection of the charger. [Figure 5] This is a partially broken plan view showing the structure of the lid and other parts. [Figure 6] This is a partially broken front view showing the structure of the frame-like part, etc. [Figure 7] This is a front view showing the configuration of the power port and other components. [Figure 8] This is a front view showing the configuration of the port cover and other components. [Figure 9] This is a plan view showing the configuration of the port cover, etc. [Figure 10] This is a left side view showing the configuration of the port cover, etc. [Figure 11] This is a right side view showing the configuration of the port cover, etc. [Figure 12] This is a partially broken right side view showing the configuration of a human-operated device, etc. [Figure 13] This is a perspective view showing the configuration of the first connection part and the first locking mechanism. [Figure 14] This is a front view showing the configuration of the port cover and the like in the first alternative embodiment. [Figure 15] This is a left side view showing the configuration of the port cover and the like in the first alternative embodiment. [Figure 16] This is a right side view showing the configuration of the port cover and other components in the first alternative embodiment. [Modes for carrying out the invention]

[0043] Embodiments for carrying out the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of arrow F in the drawings will be "forward", the direction of arrow B will be "backward", the direction of arrow L will be "left", and the direction of arrow R will be "right". Also, the direction of arrow U in the drawings will be "up", and the direction of arrow D will be "down".

[0044] [Overall configuration of the tractor] The following describes tractor A of this embodiment (corresponding to the "electric work vehicle" according to the present invention). As shown in Figure 1, tractor A is equipped with left and right front wheels 10 (corresponding to the "running gear" according to the present invention), left and right rear wheels 11 (corresponding to the "running gear" according to the present invention), and a cover member 12.

[0045] Furthermore, tractor A is equipped with a machine frame 2 and a driver's unit 3. The machine frame 2 is supported by the left and right front wheels 10 and the left and right rear wheels 11.

[0046] The cover member 12 is located at the front of the aircraft body. The control unit 3 is located behind the cover member 12. In other words, the cover member 12 is located in front of the control unit 3.

[0047] The driver's unit 3 includes a protective frame 30, a driver's seat 31, and a steering wheel 32. The operator (worker) can sit in the driver's seat 31. This allows the operator to board the driver's unit 3. The left and right front wheels 10 are steered by operating the steering wheel 32. The operator can perform various driving operations in the driver's unit 3.

[0048] In other words, tractor A is equipped with a driver's compartment 3 on which an operator can board.

[0049] Furthermore, tractor A is equipped with battery 4, inverter 5, motor M, transmission T, and front transmission mechanism FT.

[0050] As shown in Figures 1 and 2, the cover member 12 is configured to pivot around a cover pivot axis Q (corresponding to the "pivot axis" according to the present invention) that runs along the left-right direction of the aircraft. This allows the cover member 12 to be opened and closed. In other words, the cover member 12 is configured to be opened and closed by pivoting around the cover pivot axis Q that runs along the left-right direction of the aircraft. As shown in Figures 1 and 2, the cover pivot axis Q is located at the rear of the cover member 12.

[0051] When the cover member 12 is closed, the battery 4 is covered by the cover member 12. In other words, tractor A is equipped with a cover member 12 that covers the battery 4. The motor M is located below the battery 4.

[0052] Battery 4 supplies power to inverter 5. Inverter 5 converts the DC power from battery 4 into AC power and supplies it to motor M. Motor M is then driven by the AC power supplied by inverter 5. The driving force of motor M is transmitted to transmission device T.

[0053] The transmission unit T is located behind the battery 4 and behind the motor M. The front transmission mechanism FT extends forward from the transmission unit T. The transmission unit T changes the speed of the driving force received from the motor M and transmits it to the left and right rear wheels 11. The driving force is also transmitted from the transmission unit T to the left and right front wheels 10 via the front transmission mechanism FT. As a result, the left and right front wheels 10 and the left and right rear wheels 11 are driven.

[0054] Specifically, tractor A includes a battery 4 and a motor M that is powered by electricity supplied from battery 4. Tractor A also includes left and right front wheels 10 and left and right rear wheels 11 that are driven by motor M.

[0055] As shown in Figure 1, a linkage mechanism LN is provided at the rear of tractor A. An operating device (not shown), such as a tilling device, can be connected to the linkage mechanism LN.

[0056] The transmission device T is configured to transmit a portion of the driving force received from the motor M to the work device. This drives the work device.

[0057] With the above configuration, tractor A can perform work using its work equipment while moving using the left and right front wheels 10 and the left and right rear wheels 11.

[0058] [Power supply section and opening] As shown in Figures 3 and 4, tractor A is equipped with a power supply unit 20. As shown in Figures 5 and 6, the power supply unit 20 is covered by a cover member 12. That is, tractor A is equipped with a cover member 12 that covers the battery 4 and the power supply unit 20.

[0059] The power supply unit 20 is located in front of the battery 4. Furthermore, the power supply unit 20 is located in the left front portion of the space covered by the cover member 12. However, the present invention is not limited to this, and the power supply unit 20 may be located in any portion of the space covered by the cover member 12. For example, the power supply unit 20 may be located in the right front portion of the space covered by the cover member 12.

[0060] Tractor A is equipped with a first harness 61 (see Figure 8). The power supply unit 20 is electrically connected to the battery 4 via the first harness 61. As shown in Figure 4, the power supply unit 20 may also be fitted with a removable cap 21. The cap 21 may be provided with a handle 21a that can be gripped by the operator.

[0061] As shown in Figures 4 to 6, an opening 13 is formed in the portion of the cover member 12 facing the power supply unit 20. The worker can access the power supply unit 20 through the opening 13. If a cap 21 is attached to the power supply unit 20, the worker can reach into the opening 13 to attach or detach the cap 21.

[0062] In this embodiment, the opening 13 is formed on the left side of the cover member 12. However, the present invention is not limited thereto. If the power supply unit 20 is located in the front right portion of the space covered by the cover member 12, the opening 13 may be formed on the right side of the cover member 12. That is, the opening 13 is formed on the left or right side of the cover member 12.

[0063] As shown in Figure 6, a charger G provided in a charging facility can be connected to the power supply unit 20. When an operator connects the charger G to the power supply unit 20, the charger G passes through the opening 13. The specifications of the charger G and the power supply unit 20 are not particularly limited, but they may be CHAdeMO, for example.

[0064] In other words, tractor A is equipped with a power supply unit 20 that can connect to a charger G and is electrically connected to the battery 4. More specifically, tractor A is equipped with a power supply unit 20 that can connect to a charger G and is electrically connected to the battery 4 via a first harness 61.

[0065] By connecting the charger G to the power supply unit 20, power is supplied to the battery 4 via the first harness 61. This charges the battery 4.

[0066] As shown in Figure 6, the power supply unit 20 is positioned facing the first direction C1. The first direction C1 is diagonally upward. More specifically, the first direction C1 is to the upper left. That is, the power supply unit 20 is positioned facing diagonally upward.

[0067] As shown in Figure 6, the opening 13 is directed toward the second direction C2. The second direction C2 is diagonally upward. More specifically, the second direction C2 is to the upper left.

[0068] The inclination of the first direction C1 with respect to the horizontal is the first angle E1. The inclination of the second direction C2 with respect to the horizontal is the second angle E2. The second angle E2 is smaller than the first angle E1. That is, the inclination of the opening 13 with respect to the horizontal is smaller than the inclination of the power supply unit 20 with respect to the horizontal.

[0069] Figure 3 shows the first height position H1, the second height position H2, the third height position H3, and the fourth height position H4. The first height position H1 is the height position of the upper end of the opening 13. The second height position H2 is the height position of the upper end of the power supply unit 20. The third height position H3 is the height position of the lower end of the power supply unit 20. The fourth height position H4 is the height position of the lower end of the opening 13.

[0070] The second height position H2 is located lower than the first height position H1. That is, the upper end of the power supply unit 20 is located lower than the upper end of the opening 13.

[0071] The third height position H3 is located higher than the fourth height position H4. That is, the lower end of the power supply unit 20 is located higher than the lower end of the opening 13.

[0072] [Lid and frame-like parts] As shown in Figures 3 to 5, tractor A is equipped with a cover portion 14. The cover portion 14 is provided in a state that closes the opening 13. As shown in Figures 3 and 4, the cover portion 14 can change between an open state and a closed state by swinging around the cover swing axis P. The cover portion 14 shown in Figure 3 is in the closed state. The cover portion 14 shown in Figures 4 and 5 is in the open state. The opening direction of the cover portion 14 is towards the front.

[0073] When the lid 14 is open, the opening 13 is opened. When the lid 14 is closed, the opening 13 is closed by the lid 14. With this configuration, the lid 14 can open and close the opening 13. In other words, tractor A is equipped with a lid 14 that can open and close the opening 13.

[0074] As shown in Figure 3, the pivot axis P of the lid is located at the front end of the lid 14. Therefore, the base end of the lid 14's oscillation is the front end of the lid 14. Also, the free end of the lid 14's oscillation is the rear end of the lid 14.

[0075] Furthermore, as shown in Figure 3, the lid pivot axis P is inclined upwards towards the front. That is, the lid pivot axis P is inclined in the direction of opening of the lid portion 14 with respect to the vertical direction.

[0076] Furthermore, as shown in Figure 3, the edge 14a of the lid 14 has a gently sloping portion 15 and a steeply sloping portion 16. Both the gently sloping portion 15 and the steeply sloping portion 16 are inclined upwards towards the rear. The inclination of the gently sloping portion 15 is gentler than the inclination of the steeply sloping portion 16.

[0077] The gently sloping section 15 is located at the lower end of the edge 14a. The rear end of the gently sloping section 15 is connected to the front end of the steeply sloping section 16. In other words, the upper end of the gently sloping section 15 is connected to the lower end of the steeply sloping section 16.

[0078] With the above configuration, the gently sloping section 15 is inclined so that it is located higher the closer it is to the steeply sloping section 16. That is, the gently sloping section 15 is located at the lower end of the edge 14a and is inclined so that it is located higher the closer it is to the steeply sloping section 16. Also, the steeply sloping section 16 is inclined so that it is located lower the closer it is to the gently sloping section 15.

[0079] As shown in Figure 3, the power supply unit 20 is located above the gently sloping section 15 in a side view.

[0080] As shown in Figure 4, the cover member 12 has a frame-shaped portion 40. The frame-shaped portion 40 surrounds the opening 13. That is, the cover member 12 has a frame-shaped portion 40 that surrounds the opening 13.

[0081] Furthermore, in Figure 4, the lid 14 is in the open position, and the frame-shaped portion 40 does not overlap with the power supply portion 20. Thus, the opening 13 and the power supply portion 20 are positioned such that, when the lid 14 is in the open position, the frame-shaped portion 40 does not overlap with the power supply portion 20 when viewed in the direction of connection of the charger G.

[0082] As shown in Figure 5, the frame-shaped portion 40 is configured to contact the open lid portion 14. Furthermore, a chamfered portion 41 is formed on the portion of the frame-shaped portion 40 that faces the open lid portion 14. The chamfered portion 41 has a shape in which the corners are rounded off. The chamfered portion 41 may be made up of a flat surface, for example, or it may have a rounded shape.

[0083] With this configuration, the open lid portion 14 comes into contact with the chamfered portion 41.

[0084] As shown in Figure 6, the frame-shaped portion 40 has a wall-shaped extension portion 42. The extension portion 42 extends toward the inside of the cover member 12 relative to the opening 13. In other words, the extension portion 42 extends toward the side of the opening 13 where the power supply unit 20 is located. That is, the frame-shaped portion 40 has an extension portion 42 that extends toward the side of the opening 13 where the power supply unit 20 is located.

[0085] Furthermore, the extension portion 42 may be provided in a cylindrical shape corresponding to the entire circumference of the opening 13, or it may be provided corresponding to only a part of the opening 13. For example, the extension portion 42 may be provided corresponding only to the lower part of the opening 13. In this case, the extension portion 42 may be in the shape of a wall in a substantially horizontal position.

[0086] As shown in Figure 4, the frame-shaped portion 40 has a wall-shaped portion 43. The wall-shaped portion 43 is located at the lower part of the frame-shaped portion 40. The wall-shaped portion 43 is a wall-like part formed to extend upward. With this configuration, the wall-shaped portion 43 extends toward the power supply portion 20 when viewed in the connection direction of the charger G.

[0087] In other words, the frame-shaped portion 40 has a wall-shaped portion 43 that extends toward the power supply portion 20 when viewed in the direction of connection of the charger G.

[0088] As shown in Figures 3 and 4, the frame-shaped portion 40 has an outer frame portion 44. As shown in Figure 3, the outer frame portion 44 has a frame-like shape that surrounds the closed lid portion 14 in a side view. As shown in Figures 4 and 6, the wall-shaped portion 43 extends upward from the lower part of the outer frame portion 44.

[0089] [Push latch] As shown in Figure 4, tractor A is equipped with a push latch 17. The push latch 17 has a latch body 17a and a receiving portion 17b.

[0090] The latch body 17a is attached to a recess 45 formed in the frame-shaped portion 40. The recess 45 is recessed toward the inside of the cover member 12. Furthermore, the recess 45 is formed at a position corresponding to the free end of the lid portion 14 when it is closed. As a result, the latch body 17a is positioned at a position corresponding to the free end of the lid portion 14 when it is closed.

[0091] The receiving portion 17b is attached to the free end of the lid portion 14.

[0092] From the state shown in Figure 4, closing the lid 14 causes the receiving portion 17b to engage with the latch body 17a. As a result, the free end of the lid 14 is locked to the frame-shaped portion 40 by the push latch 17. In other words, tractor A is equipped with a push latch 17 capable of locking the free end of the lid 14 to the frame-shaped portion 40.

[0093] As shown in Figure 3, the lid portion 14 is provided with an indicator 18. The indicator 18 is not particularly limited, but may be composed of, for example, a plurality of small protrusions. The indicator 18 is provided on the surface of the lid portion 14 at a location corresponding to the push latch 17. That is, the indicator 18 is provided on the surface of the lid portion 14 at a location corresponding to the push latch 17.

[0094] In the state shown in Figure 3, the free end of the lid 14 is locked to the frame-shaped part 40 by the push latch 17. In this state, when an operator presses the part of the lid 14 indicated by the indicator 18, the engagement between the latch body 17a and the receiving part 17b is released. As a result, the free end of the lid 14 is released from the frame-shaped part 40.

[0095] With this configuration, the free end of the lid portion 14 can be engaged with and disengaged from the frame-shaped portion 40 by the push latch 17.

[0096] [Power port] As shown in Figure 7, the front side of the battery 4 is provided with a first port 51, a second port 52, a third port 53, and a fourth port 54. The first port 51, the second port 52, the third port 53, and the fourth port 54 are all power ports 50. In other words, tractor A is equipped with power ports 50 located on the side of the battery 4.

[0097] The first port 51 is an input port into which power is input to the battery 4. The second port 52, the third port 53, and the fourth port 54 are all output ports into which power is output from the battery 4. In other words, the power port 50 is either an input port into which power is input to the battery 4, or an output port into which power is output from the battery 4.

[0098] [Connections and electrical wiring] As shown in Figures 7 and 8, each power port 50 is connected to a connection part 70. More specifically, the first connection part 71 is connected to the first port 51 from the front. The second connection part 72 is connected to the second port 52 from the front. The third connection part 73 is connected to the third port 53 from below. The fourth connection part 74 is connected to the fourth port 54 from the front.

[0099] The first connection part 71, the second connection part 72, the third connection part 73, and the fourth connection part 74 are all connection parts 70. These connection parts 70 are arranged in a left-right direction.

[0100] Thus, tractor A is equipped with multiple power ports 50 and multiple connection points 70 corresponding to the multiple power ports 50. The multiple connection points 70 are arranged side by side.

[0101] As shown in Figures 7 and 8, each connection part 70 is provided at one end of the electrical wiring 60. Each electrical wiring 60 is electrically connected to the corresponding power port 50 via the connection part 70. In other words, tractor A is equipped with electrical wiring 60 that is electrically connected to the power port 50. Furthermore, tractor A is equipped with a connection part 70 that is provided at one end of the electrical wiring 60 and connected to the power port 50.

[0102] More specifically, tractor A is equipped with a first harness 61, a second harness 62, a third harness 63, and a fourth harness 64. The first harness 61, the second harness 62, the third harness 63, and the fourth harness 64 are all electrical wiring 60.

[0103] Here, the configuration of the front part of tractor A will be described. As shown in Figures 9 to 11, the front part of tractor A is equipped with a radiator 6, a cooling fan 7, an auxiliary battery 8, a voltage converter 9, a reserve tank (not shown), and an oil cooler (not shown). When the cover member 12 is closed, the radiator 6, cooling fan 7, auxiliary battery 8, voltage converter 9, reserve tank, and oil cooler are covered by the cover member 12.

[0104] The reserve tank can store coolant. The radiator 6 and water pump (not shown) are included in the coolant path of tractor A. The water pump pressurizes the coolant, causing it to circulate through this coolant path. The coolant is then cooled as it passes through the radiator 6.

[0105] The radiator 6 is supported by a radiator frame 19. The radiator frame 19 is configured in a gate-like shape that covers the left and right sides of the radiator 6. In other words, tractor A comprises a radiator 6 and a radiator frame 19 that supports the radiator 6.

[0106] The cooling fan 7 is located behind the radiator 6. The cooling fan 7 blows cooling air towards the rear. As a result, outside air is introduced into the inside of the cover member 12 via the outside air intake 12a (see Figure 2) located at the front of the cover member 12, and passes through the radiator 6. Consequently, the radiator 6 is cooled.

[0107] The auxiliary battery 8 supplies power to various auxiliary devices. Power is also sent from the battery 4 to the voltage converter 9. The voltage converter 9 then steps down the power from the battery 4 and supplies it to the auxiliary battery 8.

[0108] In tractor A, the hydraulic fluid is cooled by passing through an oil cooler.

[0109] Furthermore, as shown in Figures 8 and 11, a fuse box 23 is located in front of the battery 4. A box cover 24 is provided on top of the fuse box 23. The worker can access the inside of the fuse box 23 by removing the box cover 24 upwards.

[0110] As shown in Figure 8, the first connection part 71 is provided at one end of the first harness 61. The other end of the first harness 61 is connected to the power supply unit 20. By connecting the charger G (see Figure 6) to the power supply unit 20, power is supplied to the battery 4 via the power supply unit 20, the first harness 61, and the first connection part 71. This charges the battery 4. In other words, the first port 51 is a power port 50 for high voltage.

[0111] The second connection part 72 is provided at one end of the second harness 62. The other end of the second harness 62 is connected to the inverter 5. Power from the battery 4 is supplied to the inverter 5 via the second connection part 72 and the second harness 62. In other words, the second port 52 is a power port 50 for high voltage.

[0112] The third connection part 73 is provided at one end of the third harness 63. The other end of the third harness 63 is connected to the voltage converter 9. Power from the battery 4 is sent to the voltage converter 9 via the third connection part 73 and the third harness 63. In other words, the third port 53 is a power port 50 for high voltage.

[0113] The fourth connection part 74 is provided at one end of the fourth harness 64. The other end of the fourth harness 64 is connected to an electronic control device, such as the ECU (Electronic Control Unit) of tractor A. Power from the battery 4 is sent to the electronic control device via the fourth connection part 74 and the fourth harness 64. In other words, the fourth port 54 is a low-voltage power port 50.

[0114] Thus, the multiple power ports 50 shown in Figure 7 include power ports 50 for high-voltage electricity and power ports 50 for low-voltage electricity.

[0115] [Locking mechanism] As shown in Figures 8, 12, and 13, tractor A is equipped with a locking mechanism 80. The locking mechanism 80 can lock the connection part 70 while it is connected to the power port 50. In other words, tractor A is equipped with a locking mechanism 80 that can lock the connection part 70 while it is connected to the power port 50.

[0116] More specifically, the first connection part 71 is locked in place by the first locking mechanism 81 while connected to the first port 51. The second connection part 72 is locked in place by the second locking mechanism 82 while connected to the second port 52. Both the first locking mechanism 81 and the second locking mechanism 82 are locking mechanisms 80.

[0117] The first locking mechanism 81 and the second locking mechanism 82 have identical structures. The structure of the first locking mechanism 81 will be described in detail below. The description of the structure of the first locking mechanism 81 below also applies to the second locking mechanism 82.

[0118] As shown in Figures 7, 12, and 13, the first locking mechanism 81 has left and right protrusions 50a, a manual operating tool 84, and a sliding part 89. As shown in Figure 7, the left and right protrusions 50a of the first locking mechanism 81 protrude to the left and right from the first port 51. The left and right protrusions 50a of the second locking mechanism 82 protrude to the left and right from the second port 52.

[0119] As shown in Figures 12 and 13, the manual operating tool 84 includes left and right arm sections 85 and a connecting section 86. The left and right arm sections 85 extend in the front-rear direction. The front end of the left arm section 85 and the front end of the right arm section 85 are connected via the connecting section 86. The connecting section 86 extends in the left-right direction. The left and right arm sections 85 and the connecting section 86 may be formed integrally or may be separate parts.

[0120] The left and right arm portions 85 each have grooves 87 and holes 88 formed in them. As shown in Figure 12, the groove 87 is an arc-shaped groove centered on the operating axis Y that extends in the left-right direction. As shown in Figure 13, the hole 88 is formed at the upper end of the arm portion 85. The hole 88 communicates with the groove 87.

[0121] As shown in Figures 12 and 13, the left and right protrusions 50a are each engaged with the grooves 87. With the left and right protrusions 50a engaged with the grooves 87, the manual operator 84 can swing around the operating axis Y. By swinging around the operating axis Y, the manual operator 84 can change its position between a first position and a second position. In Figure 12, the manual operator 84 in the first position is shown by a solid line. The manual operator 84 in the second position is shown by a dashed line.

[0122] As shown in Figure 12, the sliding part 89 is configured to be slidable in the vertical direction. By sliding the sliding part 89 in the vertical direction, its position can be changed between a fixed position and a released position. In Figure 12, the sliding part 89 in the fixed position is shown by a solid line, and the sliding part 89 in the released position is shown by a dashed line.

[0123] When the manual operating tool 84 is in the first position and the sliding part 89 is in the fixed position, the first locking mechanism 81 is in a locked state. The locked state is a state in which the connecting part 70 is locked while connected to the power port 50.

[0124] The slide portion 89 is configured to restrict the swinging of the manual operating tool 84 when the first locking mechanism 81 is in the locked state. That is, in the locked state, the swinging of the manual operating tool 84 is restricted by the slide portion 89. When the slide portion 89 is released from this state, the manual operating tool 84 becomes swingable. When the operator swings the manual operating tool 84 to the second position, the first locking mechanism 81 becomes unlocked. The unlocked state is a state in which the connection portion 70 from the power port 50 can be removed.

[0125] In other words, the locking mechanism 80 is configured to be switchable between a locked state, in which the connection part 70 is locked while connected to the power port 50, and an unlocked state, in which the connection part 70 can be removed from the power port 50, in response to the operation of the manual operating tool 84.

[0126] Furthermore, in the unlocked state, pulling the manual operating tool 84 forward together with the first connecting part 71 causes the left and right protrusions 50a to pass through the hole 88. As a result, the left and right protrusions 50a disengage from the groove 87.

[0127] Here, as shown in Figures 7, 8, 12, and 13, tractor A is equipped with multiple wiring structures 25. The wiring structures 25 include a power port 50, electrical wiring 60, a connection part 70, a locking mechanism 80, and a manual operating tool 84.

[0128] In other words, in this embodiment, multiple wiring structures 25 are provided, each including a power port 50, electrical wiring 60, a connection part 70, a locking mechanism 80, and a manual operating tool 84.

[0129] More specifically, in this embodiment, two wiring structures 25 are provided. One wiring structure 25 includes a first port 51, a first harness 61, a first connection part 71, a first locking mechanism 81, and a manual operating tool 84 for the first locking mechanism 81. The other wiring structure 25 includes a second port 52, a second harness 62, a second connection part 72, a second locking mechanism 82, and a manual operating tool 84 for the second locking mechanism 82.

[0130] Furthermore, the number of wiring structures 25 provided is not limited to two; it may be one or three or more.

[0131] Furthermore, as shown in Figure 8, in this embodiment, multiple manual operating tools 84 are arranged side by side. More specifically, two manual operating tools 84 are arranged side by side. One manual operating tool 84 is the manual operating tool 84 for the first locking mechanism 81. The other manual operating tool 84 is the manual operating tool 84 for the second locking mechanism 82.

[0132] Furthermore, the number of manual operating tools 84 provided is not limited to two; it may be one or three or more.

[0133] [Port cover] As shown in Figure 8, tractor A is equipped with a port cover 26 (corresponding to the "regulating part" and "connection part cover" according to the present invention). The port cover 26 is formed by bending a single plate-like member. As shown in Figures 8 and 9, the port cover 26 covers the first connection part 71, the second connection part 72, the third connection part 73, and the fourth connection part 74.

[0134] In other words, the port cover 26 is made of a single component and is positioned to cover multiple connection parts 70. Furthermore, the port cover 26 is a connection part cover that covers the connection parts 70. In other words, tractor A is equipped with a port cover 26 that covers the connection parts 70.

[0135] As shown in Figure 12, the port cover 26 has a shape that is open downwards.

[0136] As shown in Figures 8 to 12, the port cover 26 has an upper wall portion 33, an inclined portion 34, a front wall portion 35, a left wall portion 36 (corresponding to the "first wall portion" according to the present invention), and a right wall portion 37 (corresponding to the "second wall portion" according to the present invention).

[0137] The upper wall portion 33 is a wall-like section in a horizontal position. The inclined portion 34 is a wall-like section that extends forward and downward from the front end of the upper wall portion 33. Due to the provision of the inclined portion 34, the upper surface of the port cover 26 is inclined.

[0138] The front wall portion 35 is a wall-like portion that extends downward from the lower end of the inclined portion 34. The left wall portion 36 and the right wall portion 37 are both wall-like portions in a vertical position. That is, the port cover 26 has a left wall portion 36 and a right wall portion 37 in a vertical position.

[0139] The left wall portion 36 and the right wall portion 37 face each other. The distance between the left wall portion 36 and the right wall portion 37 corresponds to the width of the battery 4 in the direction of approach and separation between the left wall portion 36 and the right wall portion 37. In this embodiment, the direction of approach and separation between the left wall portion 36 and the right wall portion 37 is the left-right direction.

[0140] As shown in Figures 8, 10, and 11, when the port cover 26 is attached to the body of tractor A, the left wall portion 36 is in contact with the left wall 4a of the battery 4, and the right wall portion 37 is in contact with the right wall 4b of the battery 4. In other words, when the port cover 26 is attached to the body, the left wall portion 36 and the right wall portion 37 sandwich the battery 4.

[0141] Furthermore, the upper wall portion 33 is placed on the upper part of the front end of the battery 4. That is, the upper part of the port cover 26 is placed on top of the battery 4.

[0142] As shown in Figures 8 and 9, the left end of the upper wall portion 33 is fixed to the battery 4 by a first bolt b1 (corresponding to the "fixing device" according to the present invention). The right end of the upper wall portion 33 is fixed to the battery 4 by a second bolt b2 (corresponding to the "fixing device" according to the present invention). Furthermore, as shown in Figure 11, the rear end of the right wall portion 37 is fixed to the battery 4 by a third bolt b3 (corresponding to the "fixing device" according to the present invention). The first bolt b1, the second bolt b2, and the third bolt b3 can all be attached and detached using a tool (for example, a spanner or wrench).

[0143] Specifically, the port cover 26 is fixed to the aircraft by a first bolt b1, a second bolt b2, and a third bolt b3, which are attached and detached using a tool. The port cover 26 is also fixed to the battery 4 by the first bolt b1, the second bolt b2, and the third bolt b3. Thus, the port cover 26 is supported by the battery 4.

[0144] As shown in Figure 12, the front wall portion 35 is located in the middle of the operating trajectory K of the manual operator 84 of the first locking mechanism 81. The same applies to the manual operator 84 of the second locking mechanism 82. In other words, the front wall portion 35 is positioned to span the operating trajectories K of both the manual operator 84 of the first locking mechanism 81 and the manual operator 84 of the second locking mechanism 82.

[0145] Thus, tractor A is equipped with a port cover 26 located in the middle of the operating trajectory K of the manual operating tool 84. Furthermore, the port cover 26 is made of a single component and is positioned to span across the operating trajectories K of the multiple manual operating tools 84.

[0146] Furthermore, as shown in Figures 8 and 11, the fuse box 23 is located below and near the port cover 26. When the port cover 26 is attached to the machine, the box cover 24 may be configured to interfere with the port cover 26 when an operator attempts to remove the box cover 24 upwards. This may make it difficult or impossible to remove the box cover 24 when the port cover 26 is attached to the machine.

[0147] [Support arm] As shown in Figures 2 and 9, tractor A is equipped with support arms 46. When the cover member 12 is in the closed position, the support arms 46 are covered by the cover member 12.

[0148] In other words, tractor A is equipped with a support arm 46 covered by a cover member 12.

[0149] Furthermore, as shown in Figure 2, the cover member 12 has an arm linking portion 12b.

[0150] The support arm 46 is configured to swing up and down around its base end 46a. With the cover member 12 in the open position, the support arm 46 is raised, and its free end 46b is connected to the arm linkage part 12b, so that the free end 46b comes into contact with the cover member 12 from below. As a result, the support arm 46 supports the cover member 12 in the open position.

[0151] Thus, the support arm 46 is configured to swing up and down around its base end 46a, and to support the cover member 12 in an open state by bringing the free end 46b of the support arm 46 into contact with the cover member 12 from below when the support arm 46 is in an upright position.

[0152] As shown in Figures 8 to 10, tractor A is equipped with a first stay 55 and a second stay 56. The first stay 55 is a lightning-shaped member that extends from the front end of the left end of the battery 4 toward the front right. The rear end of the first stay 55 is fixed to the battery 4. The front end of the first stay 55 is connected to the second stay 56.

[0153] The second stay 56 is a curved member that extends vertically. The lower end of the second stay 56 is connected to the front end of the first stay 55. The base end 46a of the support arm 46 is connected to the upper end of the second stay 56 in a manner that allows for relative rotation. As a result, the base end 46a of the support arm 46 is supported at the front end of the left end of the battery 4 via the second stay 56 and the first stay 55.

[0154] Furthermore, as shown in Figures 8 to 10, tractor A is equipped with a third stay 57. The third stay 57 extends forward and upward from the front wall 35. A holding part 58 is supported at the upper end of the third stay 57. The holding part 58 holds the support arm 46 in a horizontal position by clamping the support arm 46. The operator can release the support arm 46 from the holding part 58 and raise the support arm 46.

[0155] In this configuration, the support arm 46 is supported by the front wall portion 35 via the holding portion 58 and the third stay 57. In other words, the support arm 46 is supported by the port cover 26.

[0156] As shown in Figures 8 to 10, tractor A is equipped with a fourth stay 59. The fourth stay 59 extends in the longitudinal direction. The rear end of the fourth stay 59 is connected to the front end of the first stay 55. The front end of the fourth stay 59 is supported by the radiator frame 19.

[0157] [Support structure for the power supply section] As shown in Figures 8 to 10, the power supply unit 20 is supported by a support frame 65. The support frame 65 is a bent plate-shaped member. The power supply unit 20 is positioned so as to penetrate the support frame 65.

[0158] The upper end of the support frame 65 is supported by the first stay 55. The rear end of the support frame 65 is supported by the fifth stay 66. The front end of the lower end of the support frame 65 is supported by the sixth stay 67.

[0159] As shown in Figure 5, the fifth stay 66 is a lightning-shaped member that extends from the front end of the left end of the battery 4 toward the front right. The rear end of the fifth stay 66 is fixed to the battery 4. The front end of the fifth stay 66 is connected to the support frame 65.

[0160] As shown in Figures 5, 8, and 10, the sixth stay 67 is a member that extends in the front-rear direction. The rear end of the sixth stay 67 is connected to the support frame 65. The front end of the sixth stay 67 is connected to the radiator frame 19.

[0161] As shown in Figures 8 and 10, a notch J1 is formed in the port cover 26. The notch J1 extends from the lower left of the front wall 35 to the lower part of the left wall 36. The first stay 55 and the support frame 65 are positioned to fit into the notch J1.

[0162] Furthermore, as shown in Figure 8, the front wall portion 35 extends below the lower end positions of the first connecting portion 71 and the second connecting portion 72.

[0163] With the configuration described above, the connector 70 is locked in place by the locking mechanism 80 while connected to the power port 50. Therefore, in order for an operator to remove the connector 70 from the power port 50, they must operate the manual operating tool 84. This makes it less likely for an operator to accidentally remove the connector 70 from the power port 50 compared to a configuration without the locking mechanism 80 and manual operating tool 84.

[0164] Furthermore, according to the configuration described above, a port cover 26 is provided located in the middle of the operating trajectory K of the manual operating tool 84, and the port cover 26 is fixed to the machine body by a first bolt b1, a second bolt b2, and a third bolt b3, which are attached and detached using a tool. Therefore, in order to operate the manual operating tool 84, it is necessary to remove the first bolt b1, the second bolt b2, and the third bolt b3 using a tool, and then remove the port cover 26. This makes it easier to avoid situations in which an operator accidentally operates the manual operating tool 84.

[0165] Based on the above, this configuration makes it possible to realize a tractor A that makes it easier to avoid situations in which an operator accidentally disconnects the connection part 70 provided at one end of the electrical wiring 60 from the power port 50.

[0166] [First Alternative Embodiment] In the above embodiment, the port cover 26 is composed of a single component.

[0167] However, the present invention is not limited thereto. Below, a first alternative embodiment of the present invention will be described, focusing on the differences from the above embodiment. The configuration other than the parts described below is the same as in the above embodiment. Also, the same reference numerals are used for the same components as in the above embodiment.

[0168] As shown in Figures 14 to 16, in the first alternative embodiment, the port cover 26 is divided into two cover bodies, a first cover body 91 and a second cover body 92. However, the present invention is not limited thereto, and the port cover 26 may be divided into three or more cover bodies.

[0169] In other words, the port cover 26 is divided into multiple cover bodies.

[0170] The first cover body 91 and the second cover body 92 are arranged side by side. The first cover body 91 is located to the right of the second cover body 92.

[0171] As shown in Figures 14 and 16, the first cover body 91 has an upper wall portion 93, an inclined portion 94, a front wall portion 95, and a right wall portion 97.

[0172] The upper wall portion 93 is a wall-like part in a horizontal position. The inclined portion 94 is a wall-like part that extends forward and downward from the front end of the upper wall portion 93. Due to the provision of the inclined portion 94, the upper surface of the first cover body 91 is inclined.

[0173] The front wall portion 95 is a wall-like portion extending downward from the lower end of the inclined portion 94. The right wall portion 97 is a wall-like portion in a vertical position.

[0174] As shown in Figures 14 and 15, the second cover body 92 has an upper wall portion 90 and a front wall portion 98. The upper wall portion 90 is a wall-like portion in a horizontal position. The front wall portion 98 is a wall-like portion that extends downward from the front end of the upper wall portion 90.

[0175] Both the first cover body 91 and the second cover body 92 have a shape that is open downwards. In addition, the second cover body 92 also has a shape that is open to the left.

[0176] The first cover body 91 covers the first connection part 71 and the second connection part 72. The second cover body 92 covers the third connection part 73 and the fourth connection part 74.

[0177] The first cover body 91 is fixed to the battery 4 by the second bolt b2 and the third bolt b3. The second cover body 92 is fixed to the battery 4 by the first bolt b1.

[0178] In a first alternative embodiment, tractor A is equipped with a seventh stay 68, an eighth stay 69, and a ninth stay 75. As shown in Figures 14 to 16, the seventh stay 68 has a stepped shape when viewed from the front. The seventh stay 68 is fixed to the front surface of the front wall portion 98.

[0179] The eighth stay 69 is a member that extends in the front-rear direction. The rear part of the eighth stay 69 is fixed to the lower end of the seventh stay 68. The front part of the eighth stay 69 is fixed to the radiator frame 19.

[0180] In this configuration, the second cover body 92 is supported by the radiator frame 19 via the seventh stay 68 and the eighth stay 69. That is, the port cover 26 is supported by the radiator frame 19.

[0181] Furthermore, the holding portion 58 and the ninth stay 75 are supported at the upper end of the seventh stay 68. The ninth stay 75 is a member that extends in the left-right direction. The right portion of the ninth stay 75 is fixed to the upper end of the seventh stay 68. The base end 46a of the support arm 46 is connected to the left end of the ninth stay 75 in a manner that allows for relative rotation.

[0182] Furthermore, as shown in Figures 14 and 15, in the first alternative embodiment, the support frame 65 has an extended support portion 76 that extends upward. The upper end of the extended support portion 76 is fixed to the seventh stay 68.

[0183] In this configuration, the power supply unit 20 is supported by the second cover body 92 via the support frame 65 and the seventh stay 68. That is, the power supply unit 20 is supported by the port cover 26.

[0184] As shown in Figure 15, a notch J2 is formed in the upper part of the rear end of the support frame 65. The front wall portion 98 fits into the notch J2.

[0185] [Other Embodiments] (1) The power port 50 may be located on the rear, right, or left side of the battery 4.

[0186] (2) The manual operating tool 84 does not have to be included in the locking mechanism 80.

[0187] (3) An engine may be provided. In this case, the front wheels 10 and the rear wheels 11 may be driven by the motor M and the engine.

[0188] (4) The cover member 12 may be positioned at a location other than in front of the driver unit 3. For example, the cover member 12 may be positioned at the rear of the driver unit 3.

[0189] (5) The power supply unit 20 may be located above the steeply inclined section 16 when viewed from the side.

[0190] (6) The lid portion 14 may have any shape. For example, the edge portion 14a of the lid portion 14 does not have to have a gently sloping portion 15 and a steeply sloping portion 16.

[0191] (7) The lid 14 may be able to change between an open state and a closed state by means other than swinging. For example, the lid 14 may be able to change between an open state and a closed state by sliding it in the front-rear or up-down direction of the machine.

[0192] (8) The port cover 26 does not have to have an upper wall portion 33, nor does it have to have an inclined portion 34. That is, the port cover 26 may have a shape that is open upwards.

[0193] (9) The port cover 26 may be fixed to the part of the aircraft other than the battery 4 by the first bolt b1, the second bolt b2, and the third bolt b3.

[0194] (10) Instead of the port cover 26, a swing restricting section may be provided located in the middle of the operating trajectory K of the manual operating tool 84. The swing restricting section does not have to cover the connection section 70. Preferably, the swing restricting section is fixed to the machine body by a fastener (e.g., a bolt) that can be attached and detached using a tool (e.g., a spanner or wrench). In this case, the swing restricting section corresponds to the "restricting section" according to the present invention.

[0195] (11) The support arm 46 does not have to be supported by the port cover 26.

[0196] Furthermore, the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, as long as no inconsistencies arise. In addition, the embodiments disclosed herein are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the object of the present invention. [Industrial applicability]

[0197] This invention can be used not only for tractors but also for various electric work vehicles such as combine harvesters, rice transplanters, and construction machinery. [Explanation of Symbols]

[0198] 4: Battery 6: Radiator 10: Front wheels (running gear) 11: Rear wheels (running gear) 12: Cover component 19: Radiator frame 20: Power supply unit 25: Wiring structure 26: Port cover (restriction section, connection section cover) 36: Left wall section (first wall section) 37: Right wall section (second wall section) 46: Support arm 46a: Proximal end 46b:Free end 50: Power port 60: Electrical wiring 70: Connection part 80: Locking mechanism 84:Artificial operation equipment A: Tractor (electric work vehicle) b1: First bolt (fixing device) b2: Second bolt (fastener) b3: Third bolt (fixing device) G: Charger K: Operation trajectory M: Motor Q: Cover pivot axis (pivot axis)

Claims

1. Battery and A motor driven by power supplied from the aforementioned battery, A traveling device driven by the aforementioned motor, The battery comprises a power port provided on the side of the battery, The power port is an input port into which power is input to the battery, or an output port into which power is output from the battery. The electrical wiring electrically connected to the aforementioned power port, A connection part provided at one end of the electrical wiring and connected to the power port, The connection portion is equipped with a locking mechanism that allows it to be locked while connected to the power port, The locking mechanism is equipped with a manual operating tool, and is configured to be switchable between a locked state in which the connection part is locked while connected to the power port, and an unlocked state that allows the connection part to be removed from the power port, by operating the manual operating tool and changing its orientation. The aforementioned manual operator's tool is equipped with a restricting section located in the middle of the operation trajectory for changing its posture, The aforementioned regulating section is an electric work vehicle fixed to the machine body by fasteners that can be attached and detached using tools.

2. The electric work vehicle according to claim 1, wherein the restricting portion is fixed to the battery by the fixing device.

3. The electric work vehicle according to claim 1 or 2, wherein the restricting portion is a connection cover that covers the connection portion.

4. The electric work vehicle according to claim 3, wherein the regulating portion has a shape that is open downwards.

5. The electric work vehicle according to claim 1 or 2, wherein the upper surface of the regulating portion is inclined.

6. Multiple wiring structures are provided, each including the power port, the electrical wiring, the connection part, the locking mechanism, and the manual operating tool. Multiple of the aforementioned manual operating tools are arranged side by side. The electric work vehicle according to claim 1 or 2, wherein the regulating part is composed of a single member and is arranged so as to span the operation trajectory of each of the plurality of manual operating tools.

7. Battery and A motor driven by power supplied from the aforementioned battery, A traveling device driven by the aforementioned motor, The battery comprises a power port provided on the side of the battery, The power port is an input port into which power is input to the battery, or an output port into which power is output from the battery. The electrical wiring electrically connected to the aforementioned power port, A connection part provided at one end of the electrical wiring and connected to the power port, It comprises a connection cover that covers the aforementioned connection part, The battery is covered by a cover member, The cover member is configured to be able to open and close by swinging around a pivot axis that runs along the left-right direction of the aircraft. The support arm is covered by the aforementioned cover member, The support arm is configured to swing up and down around its base end, and to support the cover member in an open state by bringing the free end of the support arm into contact with the cover member from below when the support arm is in an upright position. The support arm is an electric work vehicle supported by the connection cover.

8. A battery and A motor driven by power supplied from the aforementioned battery, A traveling device driven by the aforementioned motor, The battery comprises a power port provided on the side of the battery, The power port is an input port into which power is input to the battery, or an output port into which power is output from the battery. The electrical wiring electrically connected to the aforementioned power port, A connection part provided at one end of the electrical wiring and connected to the power port, It comprises a connection cover that covers the aforementioned connection part, It is equipped with a power supply unit that can connect to a charger and is electrically connected to the battery via the aforementioned electrical wiring, The power supply unit is an electric work vehicle supported by the connection cover.

9. A battery and A motor driven by power supplied from the aforementioned battery, A traveling device driven by the aforementioned motor, The battery comprises a power port provided on the side of the battery, The power port is an input port into which power is input to the battery, or an output port into which power is output from the battery. The electrical wiring electrically connected to the aforementioned power port, A connection part provided at one end of the electrical wiring and connected to the power port, It comprises a connection cover that covers the aforementioned connection part, Radiator and, The system comprises a radiator frame that supports the radiator, The aforementioned connection cover is an electric work vehicle supported by the radiator frame.

10. A battery and A motor driven by power supplied from the aforementioned battery, A traveling device driven by the aforementioned motor, The battery comprises a power port provided on the side of the battery, The power port is an input port into which power is input to the battery, or an output port into which power is output from the battery. The electrical wiring electrically connected to the aforementioned power port, A connection part provided at one end of the electrical wiring and connected to the power port, It comprises a connection cover that covers the aforementioned connection part, The upper part of the aforementioned connection cover is an electric work vehicle mounted on top of the battery.

11. A battery and, A motor driven by power supplied from the aforementioned battery, A traveling device driven by the aforementioned motor, The battery comprises a power port provided on the side of the battery, The power port is an input port into which power is input to the battery, or an output port into which power is output from the battery. The electrical wiring electrically connected to the aforementioned power port, A connection part provided at one end of the electrical wiring and connected to the power port, It comprises a connection cover that covers the aforementioned connection part, The aforementioned connecting cover has a first wall portion and a second wall portion in a vertical position. The first wall portion and the second wall portion face each other, The distance between the first wall and the second wall corresponds to the width of the battery in the direction of approach and separation between the first wall and the second wall. With the connection cover attached to the machine body, the first wall and the second wall are the electric work vehicle that sandwiches the battery.

12. The electric work vehicle according to any one of claims 7 to 11, wherein the connection cover is supported by the battery.

13. The electric work vehicle according to any one of claims 7 to 11, wherein the connection cover is divided into a plurality of cover bodies.

14. It comprises a plurality of power ports and a plurality of connection parts corresponding to the plurality of power ports, The aforementioned multiple connection parts are arranged side by side. The electric work vehicle according to any one of claims 7 to 11, wherein the connection cover is made of a single member and is arranged to cover the plurality of connection parts.

15. The electric work vehicle according to claim 14, wherein the plurality of power ports include a power port for high current and a power port for low current.

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