combine

Abstract

The present invention provides a combine harvester in which a battery is mounted on the vehicle body, thereby preventing accidental operation of the battery discharge prevention switch and eliminating the need to operate the discharge prevention switch. [Solution] A combine harvester comprising a driving unit 15 provided on a traveling machine body 2, and an access step 60 provided on the side of the traveling machine body 2 for the operator to get on and off the driving unit 15, wherein a battery 70 and a discharge prevention switch 90 for preventing the battery 70 from discharging are provided below the floor 52 of the driving unit 15.

Description

Technical Field

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[0001] The present invention relates to a combine equipped with a battery provided on a traveling body.

Background Art

[0002] Conventionally, there is a combine equipped with a battery provided on a traveling body. The battery is used, for example, as a power source for a starting motor of an engine as a driving source of the combine or for electrical components such as headlights provided in a cabin covering an operation unit.

[0003] Regarding the use of the combine, for example, the usage period may be limited only to a specific period such as the harvesting period during a year. Therefore, in a combine equipped with a battery, in order to suppress the discharge of the battery during the period when the combine is not used, there is a configuration provided with an operation unit for switching between a connection state allowing power transmission from the battery and a non-connection state in which power transmission is cut off (see, for example, Patent Document 1). Patent Document 1 discloses a configuration in which an operation unit for switching between the connection state and the non-connection state of the battery is provided on the outer peripheral portion of the machine body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] This invention has been made in view of the above-mentioned problems, and aims to provide a combine harvester that, in a configuration in which a battery is mounted on the traveling body, can suppress accidental operation of the battery discharge prevention switch and eliminate the effort required to operate the discharge prevention switch. [Means for solving the problem]

[0007] The combine harvester according to the present invention comprises an operating section provided on a traveling machine body, and an access section provided on the side of the traveling machine body for an operator to get on and off the operating section, wherein a battery and a discharge prevention switch for preventing the battery from discharging are provided below the floor of the operating section.

[0008] In another aspect of the present invention, the combine harvester is provided in a position where the discharge prevention switch is accessible from the side of the traveling body via the boarding / alighting section.

[0009] In another aspect of the present invention, the combine harvester is configured such that the discharge prevention switch is positioned to the left and right inward from the left and right outer side walls of the battery in the left and right direction of the traveling machine.

[0010] In another aspect of the present invention, the combine harvester has a boarding / alighting section comprising support columns provided on both sides of the vehicle in the front-rear direction and a step provided between the front and rear support columns, and at least a portion of the discharge prevention switch is positioned between the battery and the front support column in the front-rear direction of the vehicle.

[0011] In another aspect of the present invention, a combine harvester is provided in which an engine room containing an engine is installed below the driver's compartment of the traveling machine, and an engine cover is provided on the left or right side of the engine, on the side where the passenger compartment is located, to cover the engine room and to be openable and closable. [Effects of the Invention]

[0012] According to the present invention, in a configuration in which a battery is mounted on a mobile vehicle, it is possible to suppress accidental operation of the battery discharge prevention switch and to eliminate the effort required to operate the discharge prevention switch. [Brief explanation of the drawing]

[0013] [Figure 1] This is a left side view of a combine harvester according to one embodiment of the present invention. [Figure 2] This is a right side view of a combine harvester according to one embodiment of the present invention. [Figure 3] This is a plan view of a combine harvester according to one embodiment of the present invention. [Figure 4] This is a right side view showing the front of the traveling body of a combine harvester according to one embodiment of the present invention. [Figure 5] This diagram schematically shows the configuration of an electrical circuit including a battery, a discharge prevention switch, and electrical components according to one embodiment of the present invention. [Figure 6] This is a front view showing the configuration of a battery and its surrounding area according to one embodiment of the present invention. [Figure 7] This is a front perspective view showing the configuration of a battery and its surroundings according to one embodiment of the present invention. [Figure 8] A right side view showing a battery according to an embodiment of the present invention and its surrounding configuration. [Figure 9] A right side cross-sectional view showing a battery according to an embodiment of the present invention and its surrounding configuration. [Figure 10] A plan cross-sectional view showing a battery according to an embodiment of the present invention and its surrounding configuration. [Figure 11] A front view showing a battery according to an embodiment of the present invention and its surrounding configuration. [Figure 12] A right side view showing a battery according to an embodiment of the present invention and its surrounding configuration. [Figure 13] A front perspective view showing a battery according to an embodiment of the present invention and its surrounding configuration.

Mode for Carrying Out the Invention

[0014] In the present invention, in a configuration where a battery is mounted on a traveling machine body, by devising the arrangement configuration of a discharge prevention switch of the battery and the like, an unintended operation of the discharge prevention switch of the battery is suppressed, and the operation of the discharge prevention switch can be performed without taking time. Hereinafter, embodiments of the present invention will be described.

[0015] The overall configuration of the combine 1 according to the present embodiment will be described with reference to FIGS. 1 to 4. In the following description, the left side (the lower side in FIG. 3) and the right side (the upper side in FIG. 3) facing the front of the combine 1 are defined as the left side and the right side of the combine 1, respectively.

[0016] As shown in FIGS. 1 and 2, the combine 1 according to the present embodiment is a normal-type combine as a harvesting machine that scoops up the harvested crops (such as rice, wheat, soybeans, corn, etc.) in the field into the machine body, threshes, sorts, stores the grain, and can be carried out of the machine as appropriate. The combine 1 includes a self-propelled traveling machine body 2 and a harvesting unit 3 provided at the front end of the traveling machine body 2. The harvesting unit 3 is configured as a harvesting device that takes in unharvested cereal straws such as rice and wheat while harvesting them, and is attached to the traveling machine body 2 so as to be liftable.

[0017] The traveling machine body 2 includes a traveling unit 4 configured as a crawler-type traveling device having a pair of left and right crawler units 5, 5. A machine body frame 6 is installed between the left and right crawler units 5, 5. Each crawler unit 5 has a plurality of rotating bodies including a drive sprocket 5a provided at the front end thereof, and a crawler 5c wound around these rotating bodies. The drive sprocket 5a is rotationally driven by receiving the transmission of power from an engine 25 provided in the combine 1.

[0018] On the left side of the machine body frame 6, a threshing unit 7 that threshes the cereal straws cut and supplied by the harvesting unit 3 and a sorting unit 8 that sorts the grains threshed by the threshing unit 7 are provided. The threshing unit 7 and the sorting unit 8 are arranged behind the harvesting unit 3 in a manner where the threshing unit 7 is in the upper stage and the sorting unit 8 is in the lower stage.

[0019] On the machine body frame 6, on the right side of the threshing unit 7 and the sorting unit 8, a grain storage unit 9 having a grain tank 10 that stores the grains (clean grains) sorted by the sorting unit 8 is provided. Inside the grain tank 10, a lower discharge conveyor that conveys the stored grains toward the discharge port of the grain tank 10 is provided. A vertical conveyor 12 is erected along the vertical direction so as to communicate with the discharge port of the grain tank 10. A grain discharge conveyor 13 is connected to the upper end of the vertical conveyor 12. The grain discharge conveyor 13 is provided so as to be rotatable in the horizontal direction and liftable and rotatable about a horizontal axis. By these conveyors, the grains in the grain tank 10 are conveyed and discharged from a paddy inlet 14 provided at the tip of the grain discharge conveyor 13 to the truck bed, container, etc.

[0020] On the machine frame 6, the driver's compartment 15 is located in front of the grain storage unit 9, that is, in the front right position on the machine frame 6, where the operator sits. The driver's compartment 15 is covered by a cabin 16. The driver's compartment 15 is equipped with a driver's seat 17, a steering wheel 18 located in front of the driver's seat 17, and various operating parts such as a main gear lever 19, a sub-gear lever, and a work clutch lever (see Figure 2). The work clutch lever is an operating tool for switching the threshing clutch, which intermittently transmits power to the threshing unit 7, and the harvesting clutch, which intermittently transmits power to the harvesting unit 3, on and off.

[0021] Below the driver's compartment 15 on the machine frame 6, there is an engine room 20 where the engine 25, which serves as the power source, is installed. The combine harvester 1 uses the rotational power of the engine 25 to drive the harvesting unit 3, the driving unit 4, the threshing unit 7, the sorting unit 8, and the grain storage unit 9. The engine 25 is located in the space below the driver's compartment 15, in the front right-hand space on the machine frame 6. The engine 25 is, for example, a diesel engine.

[0022] Within the engine compartment 20, a radiator 21 is located to the right of the engine 25 (see Figure 3). The radiator 21 is installed in the middle of the coolant circulation path for the engine 25 and cools the coolant sent from the engine 25 through heat exchange with the outside air. The coolant cooled by the radiator 21 is returned to the engine 25. The radiator 21 has a roughly rectangular plate shape and is erected with its thickness oriented in the left-right direction.

[0023] Furthermore, as shown in Figures 2 and 4, an engine cover 22, which is an outside air intake cover that covers the right side of the engine compartment 20, is provided to the right of the engine 25. The radiator 21 is located inside the engine cover 22. In other words, the radiator 21 is positioned between the engine 25 and the engine cover 22. The outside air taken in from the engine cover 22 is used for heat exchange in the radiator 21.

[0024] The engine cover 22 is located on the right side of the combine harvester 1, between the cabin 16 and the grain tank 10. The engine cover 22 is positioned as a portion that protrudes slightly to the right of the right side of the grain tank 10.

[0025] The lower rear edge portion 22a of the engine cover 22 is formed in a straight line that follows the vertical direction when viewed from the side. The engine cover 22 is supported by two hinge portions 22b located at the top and bottom of the rear edge portion 22a, so as to be rotatable with respect to the aircraft frame 6 side in the vertical direction as the pivot axis, and is designed to open and close from the front.

[0026] The engine cover 22 is opened and closed by operating a lock lever 27, which is an engine cover operating member located on the front lower side of the engine cover 22. The lock lever 27 is linked to a locking mechanism (not shown) that locks the engine cover 22 to the main body of the traveling machine 2. The lock lever 27 performs the operation of locking and unlocking the engine cover 22 by the locking mechanism, as well as the operation of opening and closing the engine cover 22.

[0027] When the engine cover 22 is closed, the right side of the engine 25 and radiator 21, which is the outside of the engine compartment, is covered by the engine cover 22, and the engine compartment 20 is closed from the right side. When the engine cover 22 is opened, the right side of the engine compartment 20 becomes open.

[0028] The engine cover 22 is provided with a rotary screen 23. The rotary screen 23 is configured to draw in outside air into the engine compartment 20 as cooling air for the engine 25. The rotary screen 23 is rotatably supported by a rotating support located at the center of a circular opening 23a formed in the engine cover 22, and is configured to rotate by the drive of a motor (not shown).

[0029] The rotary screen 23 has a circular opening 23a over which a mesh-like dustproof screen 23b is stretched. The dustproof screen 23b collects dust, dirt, straw, etc., preventing dust, etc. from entering the engine room 20 along with the outside air. The dust, etc. collected by the dustproof screen 23b is removed by a suction device 24 provided on the outside of the rotary screen 23. The suction device 24 is configured to suck up the dust, etc. attached to the dustproof screen 23b and discharge it outside the machine.

[0030] The cabin 16 covering the driver's compartment 15 has a front section, a rear section, a left side section, a right side section, a roof section that forms the ceiling, and a bottom section, and these parts together form a roughly box-like shape.

[0031] The upper majority of the front of the cabin 16 is a front window section 81. Side window sections 82 are provided on both the left and right sides of the front window section 81, forming the upper front portion of the left and right sides of the cabin 16. The front window section 81 and the side window sections 82 are formed as transparent windows using rectangular transparent plates made of glass, acrylic resin, polycarbonate resin, or the like.

[0032] In the cabin 16, a front cover portion 83 is provided below the front window portion 81 and the left and right side window portions 82, covering the lower front part of the cabin 16. The front cover portion 83 is made of a metal member such as a steel plate and has a front portion 83a located below the front window portion 81 and left and right side portions 83b located below the left and right side window portions 82. The front portion 83a of the front cover portion 83 forms the part of the front of the cabin 16 below the front window portion 81, and the left and right side portions 83b form the part of the front of the left and right side portions of the cabin 16 below the side window portions 82.

[0033] A door 50, which is an opening and closing door for boarding and alighting, is provided on the right side of the cabin 16. The door 50 occupies most of the right side of the cabin 16. The door 50 is rotatably supported on the frame portion of the cabin 16 so as to open outward from the front. The door 50 is rotatably supported on a predetermined support portion provided on the rear of the right side of the cabin 16 by door support portions 51 provided at two locations, one above and one below, with the vertical direction as the pivot axis. A grip portion 54 for opening and closing the door 50 is provided in the upper and lower middle portion of the front of the door 50.

[0034] An entry / exit step 60 is provided on the lower right side of the cabin 16, serving as an entry / exit area for the operator to enter and exit the driver's compartment 15 inside the cabin 16. The entry / exit step 60 is located below the door 50 and in front of the lower part of the engine cover 22 when viewed from the right side. The operator ascends the entry / exit step 60 when entering the cabin 16 and descends the entry / exit step 60 when exiting the cabin 16.

[0035] The lower surface of the cabin 16 forms the floor 52 of the driver's compartment 15 (see Figure 4). The floor 52 forms a horizontal floor surface by a floor panel 53 in front of and below the driver's seat 17. A seat support base 55 is provided behind the floor panel 53, and the driver's seat 17 is installed on the seat support base 55. The seat support base 55 forms a substantially horizontal support surface above and behind the floor panel 53, serving as a support surface for the driver's seat 17.

[0036] At the front lower side of the cabin 16, a lower front cover portion 84 is provided below the front cover portion 83. The lower front cover portion 84 is made of a metal member such as a steel plate and has a front portion located below the front portion 83a of the front cover portion 83, and left and right side portions located below the left and right side portions 83b of the front cover portion 83, and is provided in a manner that extends the front cover portion 83 downward. The lower front cover portion 84 constitutes a cover portion that is integrally continuous with the front cover portion 83, and in a side view, together with the front cover portion 83, it has a gently bulging shape with the front side being convex.

[0037] As described above, in the combine harvester 1, an engine room 20 containing the engine 25 is provided below the driver's compartment 15 of the traveling machine body 2. An engine cover 22, which covers the engine room 20 and is designed to be openable and closable, is provided on the right side of the engine 25, on the side where the boarding / alighting steps 60 are located.

[0038] The harvesting unit 3 will now be described. The harvesting unit 3 includes a feeder 30 as a conveying device, a platform 31 as a grain header, a cutting blade device 32, a pair of left and right grass dividers 33, 33, and a raking reel 34.

[0039] The feeder 30 is a supply and conveying device that transports the grain stalks harvested in the harvesting section 3 and supplies them to the threshing section 7. The feeder 30 has a configuration in which a conveyor for transporting grain stalks is installed inside a feeder house 35 which serves as a housing. The feeder house 35 is configured as a roughly rectangular cylinder with its longitudinal direction as the front-to-back direction in a plan view. The feeder 30 is located to the left of the cabin 16 (see Figure 3), and is installed with the rear end opening of the feeder house 35 communicating with the front threshing opening 7a of the threshing section 7 (see Figure 1).

[0040] The platform 31 is configured in a horizontally elongated bucket shape and is connected to the front side of the feeder 30 so as to communicate with the front end opening of the feeder house 35. A scraping auger (platform auger) 37 is provided inside the platform 31. The scraping auger 37 is mounted on an axis so as to be rotatable with the left-right direction as the axis of rotation.

[0041] The cutting blade device 32 is provided on the front lower edge of the platform 31 and is configured in the shape of a clipper. The pair of left and right grass dividers 33, 33 are provided so as to protrude forward from the left and right sides of the front of the platform 31. The raking reel 34 is a reel with a tine bar and is provided in a position in front and above the raking auger 37. The raking reel 34 is supported so as to be rotatable with the left-right direction as the axis of rotation between the tips of a pair of left and right reel support arms 34a, 34a, whose base ends are pivotally supported on the platform 31. The raking reel 34 rotates and continuously acts on the podded portion of the grain stalk, raking the podded portion of the grain stalk towards the raking auger 37. Power from the engine 25, transmitted via various transmission mechanisms, is used for the operation of each part of the cutting unit 3.

[0042] The conveyor inside the feeder house 35 has a harvesting unit input shaft (feeder house conveyor shaft) 38, which is located at the front of the threshing unit 7 and has its axial direction in the left-right direction, as a drive shaft that pivots at the end of its feed. The rear end of the feeder 30 is supported so as to be rotatable relative to the traveling machine body 2, with the harvesting unit input shaft 38 as the pivot axis. In addition, a lifting cylinder 39, which is a hydraulic cylinder, is interposed between the lower surface of the feeder house 35 and the machine frame 6 (see Figure 1).

[0043] The harvesting unit 3 is designed to move up and down by the rotation of the feeder 30 relative to the traveling machine body 2, which occurs as a result of the extension and retraction of the lifting cylinder 39. The height of the harvesting unit 3 is adjusted by the lifting and lowering of the harvesting unit 3, with the harvesting unit input shaft 38 as the pivot axis. The lifting and lowering of the harvesting unit 3 is operated by a predetermined operating unit provided on the driver's unit 15.

[0044] A front rotor 26 is provided at the rear of the feeder 30 to feed the stalks of grain conveyed by the feeder 30 to the threshing opening 7a. The front rotor 26 is located between the end of the conveyor inside the feeder house 35 and the threshing opening 7a. The stalks of grain conveyed by the feeder 30 are fed from the end of the conveyor inside the feeder house 35 through the threshing opening 7a into the threshing chamber 7b of the threshing unit 7 by the front rotor 26.

[0045] The threshing section 7 and the sorting section 8 will now be described. The threshing section 7 has a threshing drum 40 located in a threshing chamber 7b with a threshing opening 7a facing forward, and a receiving net 42 positioned below the threshing drum 40. The threshing chamber 7b is formed by a machine frame provided on the machine frame 6.

[0046] The threshing drum 40 is rotatably supported by a threshing drum shaft whose axis is oriented in the front-rear direction. Multiple dust supply valves are angle-adjustable on the upper side of the threshing drum 40 for adjusting the conveying speed (residence time) of the threshed grain in the threshing chamber 7b. The receiving net 42 is for allowing the grain to leak out and is provided along the outer circumferential surface of the lower part of the threshing drum 40.

[0047] The sorting unit 8 includes a rocking sorting plate 43, which is a rocking sorting unit located below the receiving net 42, a first conveyor 45, a second conveyor 46, and a winnowing machine 47. The rocking sorting plate 43 is configured to reciprocate and rock in a predetermined direction which is the front-to-back direction in a plan view by a rocking mechanism (not shown).

[0048] The oscillating sorting plate 43 has a configuration for specific gravity sorting, including a feed pan, a chaff sieve positioned behind the feed pan to adjust the amount of grain leakage, and a grain sieve positioned below the chaff sieve. The first conveyor 45 is positioned in the first trough, which extends in the machine width direction, to collect the first grain (first grade). The second conveyor 46 is positioned behind the first conveyor 45 and is positioned in the second trough, which extends in the machine width direction, to collect the second grain (second grade). The winnowing machine 47 blows sorting air onto the oscillating sorting plate 43, which exits from the front lower to the rear upper.

[0049] A return conveyor (not shown) is provided on the right side of the machine body where the threshing section 7 and sorting section 8 are located. The return conveyor is connected to the second conveyor 46 with its lower end positioned near the second conveyor 46, and its upper end is positioned near the front end of the threshing drum 40, extending in an upward sloping manner. To the right of the return conveyor, a vertically extending grain lifting conveyor 49 is provided. The grain lifting conveyor 49 transports the first grain, which has been sent by the first conveyor 45, into the grain tank 10.

[0050] The combine harvester 1, having the configuration described above, raises the harvesting unit 3 to a desired height (the harvesting height of the grain stalks) relative to the ground by the raising and lowering motion of the feeder 30, with the harvesting unit input shaft 38 as the central pivot shaft, in the field, and moves from a non-working state to a working state, in which state it moves on the traveling machine body 2. As a result, the combine harvester 1 separates the harvested crop into those to be harvested and those not to be harvested by the left and right dividers 33, 33, and while the pod-bearing portion of the grain stalks to be harvested is raked in by the raking reel 34, the pod-bearing portion of the grain stalks is cut by the cutting blade device 32.

[0051] The podded portions of the grain stalks, harvested at the desired cutting position, are raked into the platform 31 by a rotating auger 37. The auger 37's feeding action also gathers the stalks near the intake of the feeder house 35 within the platform 31, where they are then taken into the feeder house 35. The grain stalks taken into the feeder house 35 are then transported by a conveyor through the feeder house 35 and fed into the threshing opening 7a by the front rotor 26, where they are supplied to the threshing unit 7.

[0052] The podded portions of the grain stalks supplied to the threshing unit 7 are threshed by the threshing unit 7. Specifically, the grain stalks supplied to the threshing unit 7 are conveyed backward by the rotating threshing drum 40, and are threshed mainly between the threshing drum 40 and the receiving screen 42. Threshed grains smaller than the mesh size of the receiving screen 42 leak through the receiving screen 42. Straw and other debris that do not leak through the receiving screen 42 are discharged into the field through a dust outlet located at the rear of the sorting unit 8 by the conveying action of the threshing drum 40.

[0053] Meanwhile, the grains that have been threshed in the threshing section 7 and have leaked out of the receiving screen 42 are sorted in the sorting section 8. Specifically, the threshed grains that have been threshed in the threshing drum 40 and have leaked out of the receiving screen 42 are sorted into fine grains (first grade), grains with stems and other parts attached and mixed with straw (second grade), and straw scraps, etc., by the specific gravity sorting action of the oscillating sorting plate 43 and the wind sorting action of the winnowing machine 47, and then removed.

[0054] The grain (first-grade) that falls from the oscillating sorting plate 43 after sorting in the sorting section 8 is transported to the grain tank 10 by the first conveyor 45 and the connected lifting grain conveyor 49. The second-grade grain is returned to the threshing start end of the threshing drum 40 by the second conveyor 46 and the connected return conveyor, and undergoes threshing again. Straw and other debris are discharged into the field from the dust outlet located at the rear of the sorting section 8.

[0055] As described above, the combine harvester 1 according to this embodiment includes an operating unit 15 provided on the traveling body 2, and an access step 60 provided on the side of the traveling body 2 for the operator to get on and off the operating unit 15. In the combine harvester 1, a battery 70 and a discharge prevention switch 90 for preventing the battery 70 from discharging are provided below the floor panel 53 which forms the floor 52 of the operating unit 15.

[0056] As shown in Figure 5, the battery 70 is used as a power source to supply power to the electrical components 80 installed in the combine harvester 1. The electrical components 80 include, for example, the starting motor for the engine 25, the headlights installed in the cabin 16, and the control unit that controls various devices. Figure 5 schematically shows the configuration of the electrical circuit including the battery 70, the discharge prevention switch 90, and the electrical components 80.

[0057] As shown in Figure 5, the battery 70 and the electrical components 80 are electrically connected to each other by a first conductor section 71 and a second conductor section 72. Each of the first conductor section 71 and the second conductor section 72 is a connecting wire, which is a conductor such as an electric wire or cable covered with an insulator. In addition to the connecting wire, it may also include conductors such as metal frame members that make up the aircraft frame 6.

[0058] The battery 70 has a positive terminal 73 and a negative terminal 74. In the example shown in Figure 5, the positive terminal 73 is connected to the electrical component 80 by a first conductor section 71, and the negative terminal 74 is connected to the electrical component 80 by a second conductor section 72. A discharge prevention switch 90 is provided in the middle of the second conductor section 72.

[0059] The discharge prevention switch 90 is a switching device that can interrupt the transmission of power from the battery 70. The discharge prevention switch 90 is configured to allow power transmission from the battery 70 in a closed state, which closes the circuit, and to allow power transmission from the battery 70 in an open state, which disconnects power transmission from the battery 70. The battery 70 and the discharge prevention switch 90 are connected to each other by a cable 75 which constitutes the portion of the second conductor section 72 between the battery 70 and the discharge prevention switch 90.

[0060] In a configuration equipped with a discharge prevention switch 90, for example, during the harvest season or other periods when the combine harvester 1 is in use, the discharge prevention switch 90 is kept in the connected state. When the combine harvester 1 is not in use, such as after the harvest season, the discharge prevention switch 90 is switched from the connected state to the disconnected state. This suppresses the discharge of the battery 70 during the period when the combine harvester 1 is not in use. Then, when the combine harvester 1 is put back into use, the discharge prevention switch 90 is switched from the disconnected state to the connected state.

[0061] The arrangement of the battery 70 and the discharge prevention switch 90 will be described below using Figures 6 to 13. Note that the illustration of the battery 70 is simplified in the cross-sectional views shown in Figures 9 and 10.

[0062] The battery 70 is mounted on the chassis 120 that constitutes the mobile body 2, below the cabin 16. The chassis 120 is the frame 6 of the mobile body 2 and is horizontally framed by frame members such as pipe-shaped members and plate-shaped members arranged in the front-rear or left-right direction. The battery 70 is positioned on the right front part of the chassis 120 and in front of the engine 25.

[0063] The battery 70 has a roughly rectangular parallelepiped shape and is installed with its longitudinal direction oriented left to right (see Figure 10). The battery 70 has a front surface 70a, a rear surface 70b, a left side surface 70c, a right side surface 70d, an upper surface 70e, and a lower surface 70f as the surfaces that make up its roughly rectangular parallelepiped shape.

[0064] The battery 70 has a tapered shape 77 at its lower end, which is slightly narrower at the bottom with a slight step compared to the upper end. The tapered shape 77 is formed by the four slanted surfaces that make up the lower part of each of the front 70a, rear 70b, left side 70c, and right side 70d. The tapered shape 77 is provided in a dimensional range of approximately 1 / 6 to 1 / 5 of the overall dimensions of the battery 70 in the vertical direction.

[0065] The right side of the top surface 70e of the battery 70 is provided with a connection part for receiving a connector 76 attached to one end of the cable 75. A discharge prevention switch 90 is located directly in front of the front surface 70a of the battery 70.

[0066] The support configuration for the battery 70 will now be described. The battery 70 is mounted on a support plate portion 121 that constitutes the chassis 120 and is positioned and fixed in place. The support plate portion 121 is provided as a horizontal plate-shaped part by a single plate-shaped member or a plurality of overlapping plate-shaped members. The upper surface of the support plate portion 121 serves as the mounting surface 121a for the battery 70. The plate-shaped members that constitute the support plate portion 121 are fixed to the frame portion 122 that constitutes the chassis 120.

[0067] The frame section 122 is a frame portion arranged horizontally and linearly along the front-rear or left-right direction of the aircraft, and is composed of one or more square pipe (square steel pipe) shaped members. As the frame section 122 that supports the support plate section 121, there are left and right extending frame sections 122A arranged along the left-right direction on both the front and rear sides of the support plate section 121, a left front-rear extending frame section 122B arranged along the front-rear direction on the left side of the support plate section 121, and a right front-rear extending frame section 122C arranged along the front-rear direction on the right side of the support plate section 121.

[0068] The right front-rear extension frame section 122C is composed of two square pipe-shaped members fixed to each other by welding or the like in a side-by-side configuration. Furthermore, on the left side of the left front-rear extension frame section 122B, an inclined frame 123 is provided, extending diagonally to the left rear from the left front-rear extension frame section 122B, as a component of the chassis 120. The inclined frame 123 is composed of square pipe-shaped members, with its front end fixed to the left side of the left front-rear extension frame section 122B by welding or the like.

[0069] The plate-shaped member constituting the support plate portion 121 has a fixed surface portion 121b that is aligned in the front-to-back direction or left-to-right direction around the main body portion that forms the installation surface 121a, and the fixed surface portion 121b is fixed to the side portion 122c of the corresponding frame portion 122 by welding or the like. The fixed surface portion 121b is a plate-shaped portion that is bent at a right angle downwards from the horizontal main body portion of the support plate portion 121.

[0070] The battery 70 is fixed in a state where it is placed and supported on the support plate portion 121. As a configuration for fixing the battery 70 on the support plate portion 121, there are restricting plate portions 124 located on the front, rear, and left sides of the battery 70 in its placed state, which restrict the movement of the battery 70 on the support plate portion 121, and a fixing plate portion 125 provided on the right side of the battery 70. The right end of the battery 70 is supported on the right front and rear extended frame portion 122C, whose upper surface is substantially flush with the mounting surface 121a of the support plate portion 121 (see Figure 11).

[0071] The restricting plate section 124 is composed of a bent plate-like member formed in an L-shape, and has a fixed surface section 124a that is fixed to the support plate section 121 and a support surface section 124b that restricts the movement of the battery 70 as the L-shaped surface section. The L-shaped member constituting the restricting plate section 124 is fixed to the support plate section 121 by fixing the fixed surface section 124a to the installation surface 121a by welding or the like, and the support surface section 124b is erected perpendicular to the installation surface 121a.

[0072] Each restricting plate portion 124 is positioned with its support surface portion 124b facing the battery 70, and the support surface portion 124b is positioned opposite the side wall of the battery 70. By contacting the battery 70, the restricting plate portion 124 restricts the movement of the battery 70. A restricting plate portion 124 located on the front or rear side of the battery 70 restricts the movement of the battery 70 to the front or rear by the support surface portion 124b, while a restricting plate portion 124 located on the left side of the battery 70 restricts the movement of the battery 70 to the left by the support surface portion 124b.

[0073] Each restrictor plate portion 124 is located approximately in the center of the battery 70 in the front-to-back or left-to-right direction. Furthermore, the height of the support surface portion 124b of each restrictor plate portion 124 is lower than the height of the upper end of the tapered shape portion 77 of the battery 70, and the support surface portion 124b is provided to act on the tapered shape portion 77.

[0074] The fixing plate portion 125 is a plate-shaped part provided to the battery 70 so as to cover the entire rear part of the right side portion 70d. The fixing plate portion 125 is composed of a lower plate member 126 and an upper plate member 127 that are fixed to each other.

[0075] The lower plate member 126 is a bent plate-shaped member having a predetermined bent shape when viewed from the front, and is provided with its lower side fixed to the right column support frame 128 and its upper side fixed to the lower part of the upper plate member 127. The right column support frame 128 extends in the front-rear direction along the right front-rear extension frame portion 122C, with its front end positioned in front of the discharge prevention switch 90 and near the front end of the right front-rear extension frame portion 122C in the front-rear direction, and its rear end positioned behind the battery 70.

[0076] The right-side support frame 128 is composed of a member that forms a roughly L-shaped bend when viewed from the front, and has a roughly L-shaped surface portion that is a horizontal fixed surface portion 128a and a support surface portion 128b that rises from the right side of the fixed surface portion 128a. The right-side support frame 128 is installed with both its front and rear portions fixed to the front and rear support brackets 129 provided on the right side of the right-side front and rear extension frame portion 122C.

[0077] The support bracket 129 has an upper surface portion 129a and front and rear side portions 129b, and is a bent plate-like member that forms a roughly inverted U shape with the lower side open when viewed from the right side. The support bracket 129 is fixed to the right front and rear extension frame portion 122C by fixing the upper surface portion 129a to the upper surface portion 122e of the right front and rear extension frame portion 122C, and the side portion 129b to the right side of the right side surface 122f of the right front and rear extension frame portion 122C by welding or the like to the upper surface portion 129a and the side portion 129b, respectively to the upper surface portion 122e and the right side surface 122f. The rear support bracket 129 has a larger dimension in the front-to-rear direction compared to the front support bracket 129.

[0078] The right-side support frame 128 is fixed to the front and rear support brackets 129 by bolts 131, with its fixed surface portion 128a overlapping the upper surface portion 129a of the front and rear support brackets 129 from above. The bolts 131 pass through the fixed surface portion 128a and the upper surface portion 129a of the support bracket 129 from above and are screwed into nuts 132 provided on the underside of the upper surface portion 129a. There are two fixing points by bolts 131 on each support bracket 129, one at the front and one at the rear. The right-side support frame 128 is also fixed to the right-side front and rear extension frame portion 122C by bolts 133 in the front and rear direction between the front and rear bolts 131. The bolts 133 pass through the fixed surface portion 128a and the upper surface portion 122e of the right-side front and rear extension frame portion 122C and are screwed into nuts provided on the underside of the upper surface portion 122e.

[0079] The lower plate member 126 has a horizontal fixed surface portion 126a at its lower end, and the fixed surface portion 126a is superimposed on the fixed surface portion 128a of the right support frame 128 from above, and fixed to the right support frame 128 by bolts 134. The bolts 134 pass through the fixed surface portions 126a and 128a from above and are screwed into nuts 135 provided on the underside of the fixed surface portion 128a. There are two fixing points by bolts 134, one at the front and one at the back.

[0080] The upper plate member 127 has a rectangular plate-shaped portion as its main body that covers the right side portion 70d of the battery 70, and has an upper surface portion 127a formed by bending at a right angle from the upper end of the main body toward the left, and a rear surface portion 127b formed by bending at a right angle downward from the rear end of the upper surface portion 127a. The upper surface portion 127a covers the right rear corner of the upper surface portion 70e of the battery 70 from above, and the rear surface portion 127b covers the upper right corner of the rear surface portion 70b of the battery 70 from behind.

[0081] The lower plate member 126 has a connecting surface portion 126b at its upper end that runs vertically. The connecting surface portion 126b is superimposed on the lower end of the upper plate member 127 from the left side, and the lower plate member 126 is fixed and connected to the upper plate member 127 by a male screw portion 136 and a nut 137. The male screw portion 136 protrudes to the right from the connecting surface portion 126b, passes through the lower part of the upper plate member 127, and is screwed into the nut 137. There are two fixing points provided by the male screw portion 136, one at the front and one at the back.

[0082] In the lower part of the upper plate member 127, an elongated hole 127c is formed with the vertical direction as the longitudinal direction, through which the male screw portion 136 passes. This allows for adjustment of the vertical position of the upper plate member 127 relative to the lower plate member 126. By adjusting the vertical position of the upper plate member 127, the upper surface portion 127a of the upper plate member 127 and the support plate portion 121 can provide a clamping action in the vertical direction to the battery 70 placed on the support plate portion 121. This allows the battery 70 to be firmly fixed on the support plate portion 121.

[0083] Furthermore, by removing the fixing plate portion 125, the battery 70 can be lifted upward or moved to the right on the mounting surface 121a, while being positioned by the forward, rearward, and leftward restricting plate portions 124, thus becoming removable. When removing the battery 70 from the chassis 120, for example, the battery 70, which is placed on the support plate portion 121, can be removed by pulling it to the right of the machine.

[0084] The discharge prevention switch 90 is fixedly supported on the support plate portion 121 via a support stay 140 at a position directly in front of the battery 70. The support stay 140 is positioned approximately in the center of the battery 70 in the left-right direction. The support stay 140 is an example of a support member that supports the discharge prevention switch 90 on the support plate portion 121.

[0085] The support stay 140 is a bent plate-shaped member formed in a hat shape when viewed from the front, and has fixing surfaces 141 on both the left and right sides, side surfaces 142 rising from the left and right inner sides of each fixing surface 141, and an installation surface 143 connecting the upper ends of the left and right side surfaces 142. The support stay 140 has a symmetrical shape in the left-right direction.

[0086] The support stay 140 is fixed to the support plate portion 121 by welding or other means to the left and right fixing surfaces 141 of the support plate portion 121 and the mounting surface 121a of the support plate portion 121. The left and right side portions 142 are plate-shaped portions with the left-right direction as the plate thickness direction, and the mounting surface portion 143 is a plate-shaped portion with the up-down direction as the plate thickness direction. The mounting surface portion 143 is the upper surface of the support stay 140 and is the surface that receives the mounting of the discharge prevention switch 90, and its upper surface is a horizontal mounting surface.

[0087] The discharge prevention switch 90 has a switch body 91 having a roughly rectangular parallelepiped shape, a cylindrical operating arm 92 protruding to the right from the right side of the switch body 91, and a handle key 93, which is an operating member, that is detachably attached to the operating arm 92.

[0088] The discharge prevention switch 90 has plate-shaped projections 94 on both the front and rear sides of the lower part of the switch body 91, and is fixed to the support stay 140 by fixing each projection 94 to the mounting surface 143 of the support stay 140 with bolts 95. The bolts 95 pass through the projections 94 and the mounting surface 143 from above and are screwed into nuts 96 provided on the lower side of the mounting surface 143 (see Figure 11).

[0089] On the left side of the switch body 91, there are two switch-side terminals 97, one at the front and one at the back (see Figure 10). The switch-side terminals 97 consist of a male screw portion protruding to the right from the right side of the switch body 91 and a nut screwed onto it. The rear switch-side terminal 97 is electrically connected to terminal 75a, which is located at the other end of cable 75. One side of an L-shaped bracket 98, which has an L-shaped bend when viewed from the front, is connected to the front switch-side terminal 97. The other side of the L-shaped bracket 98 extends to the right along the mounting surface 143 and is fixed to the mounting surface 143 by a bolt 99. The bolt 99 passes through the other side of the L-shaped bracket 98 and the mounting surface 143 from above and is screwed into a nut portion 101 located on the underside of the mounting surface 143 (see Figure 11).

[0090] As shown in Figure 10, the handle key 93 has a plate-shaped knob portion 93a that is gripped by the operator, a cylindrical fitting cylinder portion 93b that is fitted onto the right end of the operating arm portion 92, and an operating shaft portion 93c that is concentric with the fitting cylinder portion 93b and protrudes to the left. By inserting the operating shaft portion 93c into the operating arm portion 92 from the right side and fitting the fitting cylinder portion 93b, the handle key 93 becomes engaged with the internal structure of the switch body portion 91, that is, it becomes possible to turn the discharge prevention switch 90 on and off.

[0091] The discharge prevention switch 90 can be switched on or off by rotating the handle key 93 around a pivot axis in the left-right direction that coincides with the axis of the operating arm 92. When the discharge prevention switch 90 is on, it is in a connected state where power can be transmitted from the battery 70, and when the discharge prevention switch 90 is off, it is in a disconnected state where power transmission from the battery 70 is cut off.

[0092] In this embodiment, as shown in Figure 9, the handle key 93 turns on the discharge prevention switch 90 when the knob 93a is laid flat (tilted forward), and turns off the discharge prevention switch 90 when the knob 93a is raised. The rotation operation of the handle key 93, which is used to switch the discharge prevention switch 90 on and off, is performed within an angle range of approximately 100° (see Figure 9, arrow A1). In Figure 9, the handle key 93 with the discharge prevention switch 90 in the off state is shown by a dashed line.

[0093] The discharge prevention switch 90 is configured such that the handle key 93 can be removed from the operating arm 92 when it is in the off state. In other words, the handle key 93 is designed to be removed from the operating arm 92 when the discharge prevention switch 90 is in the off state and the handle key is in the upright position. This configuration prevents the discharge prevention switch 90 from being accidentally turned on when it is in the off state.

[0094] The discharge prevention switch 90 is located in a position accessible from the side of the traveling machine 2 via the boarding / alighting step 60. In this embodiment, the boarding / alighting step 60 is located on the right side of the traveling machine 2, and the discharge prevention switch 90 is located in a position accessible from the right side of the traveling machine 2 via the boarding / alighting step 60.

[0095] The boarding / alighting step 60 has right support frame 150, which is a support column provided on both sides in the front-rear direction of the traveling machine body 2, and a step portion 160 provided between the front and rear right support frame 150. The front and rear right support frame 150 and the step portion 160 constitute the upper step 60A of the boarding / alighting step 60.

[0096] The front and rear right support frames 150 are straight frames made of square pipe-shaped members and are installed between the chassis 120 and the floor 52 of the cabin 16. The right support frames 150 have a rectangular cross-sectional shape with the front-rear direction as the longitudinal direction. The front and rear right support frames 150 are located to the right of the battery 70 in the left-right direction. The right support frames 150 are installed in an inclined manner with an angle of approximately 10° from the bottom to the top, moving from the left side inward to the right side outward. The front and rear right support frames 150 (150A, 150B) are installed so as to overlap each other when viewed from the front (see Figure 6).

[0097] In the front-to-back direction, the front right support frame 150A is located in front of the battery 70 and is positioned so as to overlap a portion of the front of the discharge prevention switch 90 when viewed from the right side (see Figure 8). Therefore, in the front-to-back direction, most of the rear of the discharge prevention switch 90 is located between the battery 70 and the front right support frame 150A.

[0098] Furthermore, in the front-to-back direction, the rear right support frame 150B is located behind the battery 70 and is positioned so as to partially overlap the lower part of the front edge of the engine cover 22 when viewed from the right side (see Figure 8). The front and rear right support frames 150 are located on the inside (left side) of the engine cover 22 in the left-to-right direction.

[0099] The right support frame 150 has its lower end fixed to the right support frame 128. The lower end of the right support frame 150 is fixed to the fixed surface portion 128a and the support surface portion 128b of the right support frame 128 by welding or the like. Reinforcement plates 152, which are roughly triangular plate-like members, are provided on both the front and rear sides of the lower end of the right support frame 150. The reinforcement plates 152 are welded to the right support frame 128 and the right support frame 150 to reinforce the lower fixed portion of the right support frame 150. The right support frame 128 partially increases the height of the support surface portion 128b by having the front and rear support portions of the right support frame 150 on the support surface portion 128b protrude upward in a trapezoidal shape.

[0100] The right support frame 150 is fixed at its upper end to a predetermined frame member 153 that constitutes the floor portion 52 of the cabin 16 by welding or the like via a bracket 154, which is a bent plate-shaped member that forms an inverted U shape when viewed from the right side. The frame member 153 is a straight frame member made of square pipe-shaped members and extends in the front-rear direction.

[0101] The front and rear right support frames 150, along with the front and rear left support frames 151 located to the left of the battery 70 in the left-right direction, support the driver's unit 15 and the cabin 16 to the chassis 120. The front and rear left support frames 151 are straight frames made of square pipe-shaped members, similar to the right support frames 150, and are installed between the chassis 120 and the floor portion 52 of the cabin 16.

[0102] The front and rear left support frames 151 are located to the left of the battery 70 in the left-right direction. The left support frames 151 are positioned perpendicular to the chassis 120, following the vertical direction. The front and rear left support frames 151 are positioned so as to overlap each other in a front view (see Figure 6). The front left support frame 151 has a square cross-sectional shape, while the rear left support frame 151 has a rectangular cross-sectional shape with the front-to-rear direction as its longitudinal direction, and its dimension in the front-to-rear direction is longer than that of the front left support frame 151 (see Figure 10).

[0103] The front left support frame 151 is positioned in the front-rear direction at the same or approximately the same location as the front right support frame 150A, and the rear left support frame 151 is positioned in the front-rear direction at the same or approximately the same location as the rear right support frame 150B. As shown in Figure 10, in a plan cross-sectional view, the front and rear right support frames 150 and the front and rear left support frames 151 are located outside the four corners of the battery 70, and the battery 70 is provided within the area enclosed by the four support frames (150, 151).

[0104] The left support frame 151 has its lower end fixed to the left support frame 138, which is provided on the left front-rear extension frame section 122B. The left support frame 138 extends in the front-rear direction along the left front-rear extension frame section 122B, with its front end positioned in front of the discharge prevention switch 90 and near the front end of the left front-rear extension frame section 122B, and its rear end positioned behind the battery 70.

[0105] The left-side support frame 138 is composed of a member that forms a roughly U-shaped bend when viewed from the front, and has a roughly U-shaped surface portion, which includes a horizontal fixed surface portion 138a and side portions 138b that rise from both the left and right sides of the fixed surface portion 138a. The left-side support frame 138 is fixed to the left front and rear extension frame portion 122B by bolts 139 with the fixed surface portion 138a overlapping the upper surface portion of the left front and rear extension frame portion 122B from above. The fixing points by bolts 139 are provided at two locations on both the front and rear sides of each of the front and rear left support frames 151.

[0106] The lower end of the left support frame 151 is fixed to the fixed surface portion 138a and the left and right side portions 138b of the left support frame 138 by welding or the like. The left support frame 138 partially increases the height of the side portions 138b by having the front and rear support portions of the left support frame 151 on the left and right side portions 138b protrude upward in a trapezoidal shape. The upper end of the left support frame 151 is fixed to a predetermined member constituting the floor portion 52 of the cabin 16 by welding or the like via a bracket 155 (see Figure 6).

[0107] In the boarding / alighting step 60, the step portion 160 has a step support plate 161 fixed to each of the front and rear right support frame 150, and two steps 162 provided between the front and rear step support plates 161.

[0108] The step support plate 161 is a plate-shaped member with its thickness in the front-to-back direction, and has a base portion 161a and upper and lower arm portions 161b that branch out downward to the right from the base portion 161a (see Figure 11). The step support plate 161 is fixed to the front and rear right support frame 150 by bolts 164 to mounting plates 163 that protrude to the right from the front and rear inner sides of each front and rear right support frame 150. Mounting plates 163 are provided at two locations, upper and lower, on each right support frame 150.

[0109] The step section 162 is composed of two step plates 165 installed between the arm sections 161b of the front and rear step support plates 161. The step plates 165 are roughly rectangular plate-like members with the thickness in the left-right direction and extending in the front-rear direction, and their upper edges have an uneven shape. The step plates 165 are fixed to the front and rear step support plates 161 by welding or the like. The two step plates 165 are spaced apart in the left-right direction and are arranged so as to overlap each other when viewed from the right side.

[0110] The upper and lower step sections 162 are arranged so that they overlap each other in a plan view. Regarding the vertical position of the two sets of step sections 162, the upper step section 162 is located between the floor 52 of the cabin 16 and the battery 70 (directly above the battery 70). The lower step section 162 is located at a height below the battery 70. In detail, the upper edge of the step plate 165 of the lower step section 162 is positioned at approximately the same height as the mounting surface 143 of the support stay 140 that supports the discharge prevention switch 90.

[0111] Furthermore, in the boarding / alighting step 60, a lower step 60B is provided below the upper step 60A. The lower step 60B has a fixed support plate 171 and a movable support plate 172, which are front and rear step support plates, and a step portion 173 provided between the front and rear movable support plates 172.

[0112] The fixed support plate 171 is fixedly supported to the right front and rear extension frame portion 122C via a mounting seat 174 provided inside the support bracket 129. The mounting seat 174 is provided, for example, by fixing a U-shaped or L-shaped metal fitting with the left side open in a plan view to the right side surface 122f of the right front and rear extension frame portion 122C by welding or the like, and a mounting surface portion 174a is formed to the right of the right side surface 122f with the left-right direction being the plate thickness direction (see Figure 12).

[0113] The fixed-side support plate 171 has a plate-shaped portion with the front-to-back direction as the thickness direction as the main body portion 171a, and a fixed surface portion 171b that is bent at a right angle toward the rear from the left end of the main body portion 171a (see Figure 12). The fixed-side support plate 171 is fixed to the mounting surface portion 174a of the mounting seat 174 at two points, top and bottom, by bolts 175. The fixed-side support plate 171 extends its main body portion 171a downward and to the right from the fixing portion to the mounting seat 174.

[0114] A movable support plate 172 is connected to the tip portion of the fixed support plate 171. The movable support plate 172 is a plate-shaped member that extends downward and to the right from the fixed support plate 171, with its front-to-back direction being the thickness direction. One end in the longitudinal direction is supported by a pivot member 176 such as a support pin so as to be rotatable relative to the fixed support plate 171 with its front-to-back direction being the pivot axis direction.

[0115] The step section 173 is composed of two step plates 177 installed between the other ends of the front and rear movable side support plates 172. The step section 173 has the same configuration as the step section 162 of the upper step 60A. The step section 173 is provided so as to substantially overlap the step section 162 of the upper step 60A in a plan view. In terms of vertical position, the step section 173 is located below the right front and rear extension frame section 122C and at the height of the upper part of the track 5c of the crawler section 5.

[0116] The lower step 60B is foldable by the upward rotation of the pivot members 176 of the front and rear movable support plates 172 relative to the front and rear fixed support plates 171. The lower step 60B is held in both its operational and folded states by the biasing force of a spring 178 provided between the front fixed support plate 171 and the front movable support plate 172.

[0117] The spring 178 is a coil spring with locking parts at both ends. One end of the spring is locked and supported by a support pin 179 provided on the fixed-side support plate 171 at a position to the left of the pivot member 176, and the other end of the spring is locked and supported by a support pin 181 provided on the movable-side support plate 172 at a position to the right of the pivot member 176 (see Figure 11). The spring 178 is covered and protected by a spring cover 182. The spring cover 182 is fixed to the movable-side support plate 172 at two points by bolts 183, etc., and covers almost the entire spring 178.

[0118] In the configuration described above, the discharge prevention switch 90 can be accessed from the right side of the mobile body 2 via the space between the upper and lower rungs 162 of the upper step 60A. Specifically, the discharge prevention switch 90 can be accessed from the right side of the mobile body 2 via the space between the upper and lower rungs 162 and the space between the battery 70 and the front right support frame 150.

[0119] As described above, in the front-to-back direction, most of the rear of the discharge prevention switch 90 is located between the battery 70 and the front right support frame 150A, and in a right side view, most of the rear of the discharge prevention switch 90 is exposed (see Figure 8). This exposed portion of the discharge prevention switch 90 in the right side view includes the rotating support part (operating arm part 92) of the handle key 93 for turning the discharge prevention switch 90 on and off.

[0120] More specifically, as shown in Figure 12, the pivot point C1 of the handle key 93 is located between the battery 70 and the front right support frame 150 in the front-rear direction. The pivot point C1 coincides with the central axis of the operating arm 92 and is the front-rear center of the discharge prevention switch 90.

[0121] Thus, the discharge prevention switch 90 has most of its rear portion located between the battery 70 and the front right support frame 150 in the front-rear direction of the mobile body 2. That is, as shown in Figure 12, the discharge prevention switch 90 is positioned such that most of its rear portion is located within the range ΔD between the position D1 of the front portion 70a of the battery 70 and the position D2 of the rear portion 150c of the front right support frame 150 in the front-rear direction.

[0122] Furthermore, regarding the arrangement of the discharge prevention switch 90, the discharge prevention switch 90 is positioned to the left and right inward from the right side surface 70d, which is the left and right outer side wall portion of the battery 70, in the left-right direction of the mobile body 2. As described above, the discharge prevention switch 90 is provided in front of the battery 70, fixedly supported on a support stay 140 provided on the support plate portion 121. In the left-right direction, the operating arm portion 92 and the handle key 93 of the discharge prevention switch 90 protrude to the right from the support stay 140.

[0123] In this manner, the discharge prevention switch 90, which is mounted on the support stay 140, is positioned to the left of the right side portion 70d of the battery 70, in the left-right direction. That is, as shown in Figure 11, the right end position E1 of the handle key 93, which is the right end position of the discharge prevention switch 90, is located to the left of the position E2 of the right side portion 70d of the battery 70, in the left-right direction.

[0124] According to the combine harvester 1 of this embodiment, which has the above configuration, when the battery 70 is mounted on the traveling body 2, it is possible to suppress accidental operation of the battery discharge prevention switch 90 and to eliminate the effort required to operate the discharge prevention switch 90.

[0125] In other words, the discharge prevention switch 90 is located below the floor 52 of the driver's unit 15, together with the battery 70. With this configuration, the discharge prevention switch 90 can be placed inside the body of the traveling machine 2, which prevents accidental operation of the discharge prevention switch 90 by the operator of the combine harvester 1 during work, thereby ensuring safety. Furthermore, since the discharge prevention switch 90 can be placed close to the driver's unit 15, operation of the discharge prevention switch 90, for example, at the start or end of work by the combine harvester 1, can be performed easily and without hassle.

[0126] Furthermore, in a configuration in which the battery 70 is located in front of the engine room 20, the discharge prevention switch 90 is positioned on the opposite side (front side) from the engine 25 relative to the battery 70 in the front-rear direction. With this configuration, the discharge prevention switch 90 can be positioned away from the engine 25, which is a heat source during the operation of the combine harvester 1, via the battery 70. This reduces the influence of heat from the engine 25 and suppresses malfunctions of the discharge prevention switch 90 due to overheating.

[0127] Furthermore, the discharge prevention switch 90 is located in a position accessible from the right side of the traveling body 2 via the boarding / alighting step 60. With this configuration, the discharge prevention switch 90 can be operated by reaching a hand through the boarding / alighting step 60 located on the right side of the traveling body 2, thereby improving the operability of the discharge prevention switch 90. In particular, in a configuration in which the front of the discharge prevention switch 90 is covered by the lower front cover portion 84 (see Figure 8), for the discharge prevention switch 90 in which a portion is exposed through the gap between the components of the boarding / alighting step 60 when viewed from the right side, the discharge prevention switch 90 can be easily operated from the right side of the boarding / alighting step 60, which is closer to the driver's unit 15, through the gap between the components of the boarding / alighting step 60, even with the lower front cover portion 84 attached.

[0128] Furthermore, the discharge prevention switch 90 is positioned to the left and right of the right side portion 70d of the battery 70 in the left-right direction of the traveling body 2. With this configuration, when the operator steps on or off the boarding / alighting step 60, it is possible to prevent the operator's toes or the like from coming into contact with the discharge prevention switch 90 through the gaps between the components of the boarding / alighting step 60.

[0129] In other words, when viewed from the right side of the mobile unit 2 towards the mobile unit 2, the discharge prevention switch 90 can be positioned behind the right side surface 70d of the battery 70. As a result, the right side surface 70d of the battery 70 acts as a guard surface, protecting the discharge prevention switch 90 from the toes of the operator getting on and off the boarding / alighting step 60. This prevents unintentional contact with the discharge prevention switch 90 and accidental operation of the discharge prevention switch 90.

[0130] Furthermore, the discharge prevention switch 90 is positioned such that, in the front-to-rear direction of the mobile body 2, the majority of its rear portion is located between the battery 70 and the front right support frame 150 that constitutes the upper step 60A. With this configuration, the battery 70 and the front right support frame 150 can act as guard members for the discharge prevention switch 90, thereby effectively preventing the operator from coming into contact with the discharge prevention switch 90 with their toes or other body parts when getting on or off the boarding / alighting step 60.

[0131] In this embodiment, it is preferable to position the discharge prevention switch 90 in the front-rear direction such that the majority of the rear portion of the discharge prevention switch 90, including the pivot center C1 of the handle key 93, is located between the battery 70 and the front right support frame 150. This arrangement of the discharge prevention switch 90 ensures good operability of the handle key 93 when operating the discharge prevention switch 90 from the right side of the machine.

[0132] The discharge prevention switch 90 may be positioned, in whole or substantially in whole, between the battery 70 and the front right support frame 150 in the front-to-back direction. In other words, the discharge prevention switch 90 only needs to be positioned, at least partially, between the battery 70 and the front right support frame 150 in the front-to-back direction.

[0133] Furthermore, an engine room 20 is provided below the driver's unit 15, and an openable and closable engine cover 22 is provided in the front-rear direction of the mobile body 2, directly behind the battery 70. With this configuration, the discharge prevention switch 90 can be positioned near the engine cover 22. For example, when performing maintenance around the engine 25 by opening the engine cover 22, the discharge prevention switch 90 can be operated easily and without hassle before or after the maintenance. In other words, the worker performing maintenance around the engine 25 can operate the discharge prevention switch 90 without changing their position relative to the mobile body 2, thereby improving the efficiency of the maintenance work.

[0134] In particular, the lock lever 27 for opening and closing the engine cover 22 is located in front of the engine cover 22, similar to the battery 70 and the discharge prevention switch 90. Therefore, the operator opening and closing the engine cover 22 can easily operate the discharge prevention switch 90 located near the engine cover 22, resulting in good workability for maintenance work around the engine 25.

[0135] Furthermore, the discharge prevention switch 90 is mounted and supported on the support stay 140 on the support plate portion 121 that constitutes the chassis 120. With this configuration, space can be secured below the discharge prevention switch 90 on the support plate portion 121, so good operability can be obtained when rotating the handle key 93 without pinching your hand between the handle key 93 and the support plate portion 121.

[0136] The embodiments described above are examples of the present invention, and the present invention is not limited to the embodiments described above. Therefore, even in embodiments other than those described above, various modifications are possible depending on the design, etc., as long as they do not depart from the technical spirit of the present invention. Furthermore, the effects described in this disclosure are merely examples and are not limiting, and other effects may also exist.

[0137] In the embodiment described above, combine harvester 1 is a conventional combine harvester, but the present invention is also applicable to other combine harvesters, such as a self-propelled combine harvester.

[0138] This technology can take the following configurations. Note that the configurations described below can be selected and combined as desired.

[0139] (1) A combine harvester comprising an operating section provided on the traveling body, and an access section provided on the side of the traveling body for the operator to get on and off the operating section, A battery and a discharge prevention switch for preventing the battery from discharging are provided below the floor of the aforementioned driver's unit. A combine harvester characterized by the following features. (2) The discharge prevention switch is located in a position accessible from the side of the traveling body via the boarding / alighting section. The combine harvester according to (1) above, characterized in that it is a combination harvester. (3) The discharge prevention switch is positioned to the left and right inward from the left and right outer side walls of the battery in the left and right direction of the mobile body. The combine harvester according to (1) or (2) above, characterized in that it is the same as described above. (4) The boarding / alighting section has support columns provided on both sides in the front-rear direction of the vehicle body, and a step provided between the front and rear support columns. The discharge prevention switch is positioned, at least in part, between the battery and the front support column in the longitudinal direction of the mobile body. A combine harvester according to any one of the above items (1) to (3), characterized in that it is a combine harvester. (5) An engine room containing an engine is provided below the driver's compartment of the aforementioned mobile body. An engine cover, which covers the engine compartment and is designed to be openable and closable, is provided on the left or right side of the engine, on the side where the passenger entry / exit area is located. A combine harvester according to any one of the above items (1) to (4), characterized in that it is a combine harvester. [Explanation of symbols]

[0140] 1 combine harvester 2. Mobile Unit 15. Driver's Unit 20 Engine Room 22 Engine cover 25 Engine 52 Floor 60. Steps for boarding / alighting (boarding / alighting area) 70 batteries 70d Right side (left and right outer side walls) 90 Discharge prevention switch 150 Right support frame (support section) 160 Foot part

Claims

1. A combine harvester comprising an operating section provided on the traveling body, and an access section provided on the side of the traveling body for the operator to get on and off the operating section, A battery and a discharge prevention switch for preventing the battery from discharging are provided below the floor of the aforementioned driver's unit. A combine harvester characterized by the following features.

2. The discharge prevention switch is located in a position accessible from the side of the traveling body via the boarding / alighting section. The combine harvester as described in feature 1.

3. The discharge prevention switch is positioned to the left and right inward from the left and right outer side walls of the battery in the left and right direction of the mobile body. A combine harvester according to claim 1 or 2.

4. The boarding / alighting section has support columns provided on both sides in the front-rear direction of the vehicle body, and a step provided between the front and rear support columns. The discharge prevention switch is positioned, at least in part, between the battery and the front support column in the longitudinal direction of the mobile body. The combine harvester as described in feature 1.

5. An engine room containing an engine is provided below the driver's compartment of the aforementioned mobile body. An engine cover, which covers the engine compartment and is designed to be openable and closable, is provided on the left or right side of the engine, on the side where the passenger entry / exit area is located. The combine harvester as described in feature 1.

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