Work vehicles

Abstract

To provide a work vehicle configured so as to suppress rain water and dust from adhering to an insertion port of a charging connector.SOLUTION: A cover (91) openably and closably supported on a first support shaft (95) extending in a longitudinal direction is provided above a left fender (64L) provided at a left side of a control seat (60) of a control section (6), and a charging connector (90) that charges a battery (50) with electricity is connected through a connection member (93) to a lower part of the cover (91). When the cover (91) is closed, a longitudinal shaft (90A) of the charging connector 90 extends in a lateral direction, so that an insertion port (90B) of the charging connector (90) confronts a left side, and when the cover (91) is opened, the longitudinal shaft (90A) of the charging connector (90) rotates in a counterclockwise direction, when viewed from a shaft center of the first support shaft (95).SELECTED DRAWING: Figure 29

Description

Technical Field

[0001] The present invention relates to a work vehicle equipped with a working machine that travels in a park or the like and cuts turf or the like planted in the park.

Background Art

[0002] Conventionally, a technique of providing a charging connector for charging a battery that supplies power to a motor on the left side of the body of an electric vehicle driven by a motor is known. (Patent Document 1)

[0003] Further, a work vehicle mounts a battery at the rear of the work vehicle, supplies the power of the battery to an electric motor, and transmits the output rotation of the electric motor to a working machine that cuts turf or the like supported in a liftable manner at the rear wheels or the front part of the work vehicle to drive it. A technique is known. (Patent Document 2)

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, with the means of Patent Document 1, there is a risk that rainwater or dust that has entered the inside from the gap in the outer peripheral part of the cover that covers the outside of the charging connector adheres to the insertion port (socket) of the charging connector and causes a short circuit.

[0006] Also, with the means of Patent Document 2, there is a risk that the battery may be damaged by the vibration generated in the traveling vehicle body during traveling.

[0007] Therefore, the primary objective of the present invention is to provide a work vehicle that prevents rainwater and dust from adhering to the charging connector socket. Another objective is to provide a work vehicle that prevents battery damage caused by vibrations of the vehicle body during operation. [Means for solving the problem]

[0008] The present invention, which solves the above problems, is as follows. In other words, the invention described in claim 1 is a work vehicle having a running body (1) with a pair of left and right front wheels (2) at the front, a pair of left and right rear wheels (3) at the rear of the running body (1), a weed cutting machine (4) between the front wheels (2) and rear wheels (3) of the running body (1), a bonnet section (5) having a predetermined space at the front of the running body (1), a control section (6) on the rear side of the bonnet section (5) where the operator sits, and a grass collection container (8) on the rear side of the control section (6) for collecting the weeds cut by the work machine (4), A first electric motor (30) for driving the rear wheel (3) and a second electric motor (40) for driving the work machine (4) are provided on the front side of the grass collection container (8), a battery (50) for supplying high-voltage power to the first electric motor (30) and the second electric motor (40) is provided on the bonnet section (5), a cover (91) is provided on the upper part of the left fender (64L) located to the left of the cockpit (60) of the control unit (6) and is supported by a first support shaft (95) that extends in the front-rear direction so as to be able to open and close, a charging connector (90) for charging the battery (50) is connected to the lower part of the cover (91) via a connecting member (93), when the cover (91) is closed, the longitudinal axis (90A) of the charging connector (90) extends in the left-right direction and the insertion port (90B) of the charging connector (90) faces to the left, when the cover (91) is open, View from the rear In the axial view of the first support shaft (95), the longitudinal axis (90A) of the charging connector (90) is time This is a work vehicle characterized by its ability to rotate in a specific direction.

[0009] The invention described in claim 2 is a work vehicle according to claim 1, wherein an arc-shaped support member (94) is provided at the lower part of the cover (91) and is rotatably supported by the first support shaft (95), an uneven portion (94A) is formed on the outer circumference of the support member (94), a plate-shaped engaging member (97) is provided on the left fender (64L) and extends toward the uneven portion (94A), and a protrusion (97A) is formed at the tip of the engaging member (97) that engages with the uneven portion (94A).

[0010] The invention described in claim 3 is the work vehicle according to claim 2, wherein the depth of the uneven portion (94A) is formed to increase in a counterclockwise direction.

[0011] The invention described in claim 4 is a work vehicle according to claim 1, wherein a cap (98B) that covers the insertion opening (90B) is rotatably supported on a second support shaft (98A) that extends in the front-rear direction of a protective cover (98) fitted onto the charging connector (90).

[0012] The invention described in claim 5 is a work vehicle according to claim 1, wherein the work machine (4) and the grass collection container (8) are connected by a chute (46), and a ventilation opening (101) is formed to the left of the entrance (8A) that connects the rear of the chute (46) on the front wall (100) of the grass collection container (8), for blowing air forward from the grass collection container (8).

[0013] The invention described in claim 6 is a work vehicle according to claim 1, wherein the work machine (4) and the grass collection container (8) are connected by a chute (46), and a first cooling pipe (105) through which cooling water for cooling the first electric motor (30) circulates and a second cooling pipe (106) through which cooling water for cooling the second electric motor (40) circulates are arranged side by side to the left of the entrance (8A) that connects the rear of the chute (46) on the front wall (100) of the grass collection container (8).

[0014] The invention described in claim 7 is a work vehicle according to claim 1, wherein a left support member (12L, 13L) is provided on the left side of the running vehicle body (1) at a predetermined distance in the front-rear direction, a right support member (12R, 13R) is provided on the right side of the running vehicle body (1) at a predetermined distance in the front-rear direction, a left vibration damping member (53L) is provided on the left front-rear frame (52L) of the bracket (52) fitted onto the battery (50) at a predetermined distance in the front-rear direction, a right vibration damping member (53R) is provided on the right front-rear frame (52R) of the bracket (52) at a predetermined distance in the front-rear direction, and in a front view, the connecting portion of the left support member (12L, 13L) and the connecting portion of the left front-rear frame (52L) are formed with an upward slope to the left, and the connecting portion of the right support member (12R, 13R) and the connecting portion of the right front-rear frame (52R) are formed with an upward slope to the right.

[0015] The invention described in claim 8 is a work vehicle according to claim 7, wherein, in a front view, the inclined surface of the connecting portion of the left support member (12L, 13L) and the connecting portion of the left front and rear frame (52L) is formed perpendicular to a first imaginary line (54L) connecting the center of the left vibration damping member (53L) and the center of the left front wheel (2L) of the front wheel (2), and the inclined surface of the connecting portion of the right support member (12R, 13R) and the connecting portion of the right front and rear frame (52R) is formed perpendicular to a second imaginary line (54R) passing through the center of the right vibration damping member (53R) and the center of the right front wheel (2R) of the front wheel (2).

[0016] The invention described in claim 9 is a work vehicle according to claim 1, wherein the vehicle body (1) is formed by a vehicle body main body (10) extending in the front-rear direction and a steering post (11) extending in the vertical direction that supports the steering shaft (63) of the control unit (6), an inverted U-shaped upper and lower protective frame (26) is provided along the outer circumference of the battery (50), and an inverted U-shaped safety frame (7) is provided on the rear side of the driver's seat (60), and in a side view, a third imaginary line (28) connecting the top of the upper and lower protective frame (26) and the base of the connecting portion (7A) of the safety frame (7) extends above the steering wheel (62) supported on the upper part of the steering shaft (63).

[0017] The invention described in claim 10 is a work vehicle according to claim 9, wherein a front and rear protective frame (27) is provided in the middle of the upper and lower protective frame (26) in the vertical direction, and the rear part of the front and rear protective frame (27) is connected to a steering post (11).

[0018] The invention described in claim 11 is a work vehicle according to claim 10, wherein a buffer member (15) is provided at a predetermined distance in the left-right direction at the lower part of the steering post (11), and the tip of the buffer member (15) is pressed against the rear surfaces of the left battery (50L) and the right battery (50R) of the battery (50), respectively. [Effects of the Invention]

[0019] According to the invention described in claim 1, a first electric motor (30) for driving the rear wheels (3) and a second electric motor (40) for driving the work machine (4) are provided on the front side of the grass collection container (8), a battery (50) for supplying high-voltage power to the first electric motor (30) and the second electric motor (40) is provided on the bonnet section (5), a cover (91) is provided on the upper part of the left fender (64L) located on the left side of the cockpit (60) of the control unit (6) and is supported by a first support shaft (95) that extends in the front-rear direction so as to be able to open and close, a charging connector (90) for charging the battery (50) is connected to the lower part of the cover (91) via a connecting member (93), when the cover (91) is closed, the longitudinal axis (90A) of the charging connector (90) extends in the left-right direction and the insertion port (90B) of the charging connector (90) faces to the left, when the cover (91) is open, View from the rear In the axial view of the first support shaft (95), the longitudinal axis (90A) of the charging connector (90) is time Because it rotates in the direction of measurement, it prevents rainwater and dust from adhering to the charging connector (90) socket (90B), and when charging the battery (50), the plug can be easily inserted into the charging connector (90) socket (90B).

[0020] According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, a support member (94) formed in an arc shape and rotatably supported by a first support shaft (95) is provided below the cover (91). An uneven portion (94A) is formed on the outer peripheral portion of the support member (94). A plate-like engaging member (97) extending toward the uneven portion (94A) is provided on the left fender (64L), and a convex portion (97A) engaging with the uneven portion (94A) is formed at the tip of the engaging member (97). Therefore, when the cover (91) is closed and opened or opened and closed, vibration is propagated to the fingertips of the operator, allowing the operator to recognize the opening and closing operation of the cover (91) and suppressing misoperation.

[0021] According to the invention described in claim 3, in addition to the effects of the invention described in claim 2, the depth of the uneven portion (94A) is formed deeper as it goes counterclockwise. Therefore, when the cover (91) is opened from the closed state, the vibration increases as it approaches the open state. Also, when the cover (91) is closed from the open state, the vibration decreases as it approaches the closed state, allowing the operator to more recognize the opening and closing operation of the cover (91) and further suppressing misoperation.

[0022] According to the invention described in claim 4, in addition to the effects of the invention described in claim 1, a cap (98B) covering the insertion port (90B) is rotatably supported on a second support shaft (98A) extending in the front-rear direction of a protective cover (98) externally fitted to the charging connector (90). Therefore, it is possible to further suppress rainwater and dust from adhering to the insertion port (90B) of the charging connector (90).

[0023] According to the invention described in claim 5, in addition to the effects of the invention described in claim 1, the working machine (4) and the grass collection container (8) are communicated by a shooter (46). A ventilation port (101) for blowing air from the grass collection container (8) toward the front is formed on the left side of the loading port (8A) connecting the rear part of the shooter (46) to the front wall (100) of the grass collection container (8). Therefore, the conveyed air blown into the grass collection container (8) can be blown from the ventilation port (101) toward the first electric motor (30) and the second electric motor (40) to suppress the temperature rise of the electric motors 30 and 40.

[0024] According to the invention described in claim 6, in addition to the effect of the invention described in claim 1, the working machine (4) and the hay collecting container (8) are communicated with each other by the shooter (46), and on the left side of the inlet (8A) connecting the rear part of the shooter (46) of the front wall (100) of the hay collecting container (8), the first cooling pipe (105) through which cooling water for cooling the first electric motor (30) circulates and the second cooling pipe (106) through which cooling water for cooling the second electric motor (40) circulates are arranged side by side. Therefore, the cooling water circulating through the first cooling pipe (105) and the second cooling pipe (106) can be cooled by the conveying air blown into the hay collecting container (8), and the temperature rise of the first electric motor (30) and the second electric motor (40) can be suppressed.

[0025] According to the invention described in claim 7, in addition to the effect of the invention described in claim 1, left support members (12L, 13L) are provided on the left part of the traveling vehicle body (1) at a predetermined interval in the front-rear direction, and right support members (12R, 13R) are provided on the right part of the traveling vehicle body (1) at a predetermined interval in the front-rear direction. Left vibration-proof members (53L) are provided on the left front-rear frame (52L) of the bracket (52) externally fitted to the battery (50) at a predetermined interval in the front-rear direction, and right vibration-proof members (53R) are provided on the right front-rear frame (52R) of the bracket (52) at a predetermined interval in the front-rear direction. In a front view, the connecting part of the left support members (12L, 13L) and the connecting part of the left front-rear frame (52L) are formed to be inclined upward to the left, and the connecting part of the right support members (12R, 13R) and the connecting part of the right front-rear frame (52R) are formed to be inclined upward to the right. Therefore, damage to the battery (50) due to large left-right vibrations of the traveling vehicle body (1) generated during traveling can be further suppressed.

[0026] According to the invention described in claim 8, in addition to the effects of the invention described in claim 7, in a front view, the inclined surface of the connecting portion of the left support member (12L, 13L) and the connecting portion of the left front and rear frame (52L) is formed perpendicular to a first imaginary line (54L) connecting the center of the left vibration damping member (53L) and the center of the left front wheel (2L) of the front wheel (2), and the inclined surface of the connecting portion of the right support member (12R, 13R) and the connecting portion of the right front and rear frame (52R) is formed perpendicular to a second imaginary line (54R) passing through the center of the right vibration damping member (53R) and the center of the right front wheel (2R) of the front wheel (2), so that large vibrations caused by unevenness in the running surface can be suppressed via the left front wheel (2L) and the right front wheel (2R), thereby further suppressing damage to the battery (50).

[0027] According to the invention of claim 9, in addition to the effects of the invention of claim 1, the vehicle body (1) is formed by a vehicle body main body (10) extending in the front-rear direction and a steering post (11) extending in the vertical direction that supports the steering shaft (63) of the control unit (6). An inverted U-shaped upper and lower protective frame (26) is provided along the outer circumference of the battery (50), and an inverted U-shaped safety frame (7) is provided behind the driver's seat (60). In a side view, a third imaginary line (28) connecting the top of the upper and lower protective frame (26) and the base of the connecting part (7A) of the safety frame (7) extends above the steering wheel (62) supported on the upper part of the steering shaft (63). This creates a large protective space below the third imaginary line (28), which reduces the risk of the operator seated in the driver's seat (60) colliding with external tree branches, etc., when the work vehicle is in motion, thereby improving work safety.

[0028] According to the invention of claim 10, in addition to the effects of the invention of claim 1, a front and rear protective frame (27) is provided extending rearward from the middle of the upper and lower protective frame (26) in the vertical direction, and the rear of the front and rear protective frame (27) is connected to the steering post (11). This increases the rigidity of the upper and lower protective frame (26) and the front and rear protective frame (27), thereby suppressing deformation during falls and other incidents.

[0029] According to the invention described in claim 11, in addition to the effects of the invention described in claim 10, cushioning members (15) are provided at a predetermined distance from each other in the left-right direction at the lower part of the steering post (11), and the tips of the cushioning members (15) are pressed against the rear surfaces of the left battery (50L) and the right battery (50R) of the battery (50), respectively. This prevents the left battery (50L) and the right battery (50R) of the battery (50) from moving backward when the work vehicle is suddenly started, thereby suppressing damage to the left battery (50L) and the right battery (50R) from colliding with surrounding members. [Brief explanation of the drawing]

[0030] [Figure 1] This is a left side view of the work vehicle. [Figure 2] This is a left side view of a work vehicle with its hood cover open. [Figure 3] This is a perspective view of a key section of a work vehicle that was partially broken. [Figure 4] This is a rear view of the work vehicle. [Figure 5] This is a plan view of the rear wheels and the main components of the work equipment. [Figure 6] This is a left side view of the rear wheel and the main components of the work implement. [Figure 7] This is a left side view of the electric motor for the rear wheels and the electric motor for the work equipment. [Figure 8] This is a perspective view of the speed control lever used to increase or decrease the rotational speed of the cutting blade of a work machine. [Figure 9] This is a perspective view of the vehicle in motion. [Figure 10] This is a perspective view of the steering column. [Figure 11] An objective view of the battery and steering column. [Figure 12] This is a plan view of the work vehicle, excluding the hood cover and driver's seat. [Figure 13] This is an objective view of the battery and battery bracket. [Figure 14] This is a perspective view of the battery bracket. [Figure 15]This is a front view of the front wheel, battery, and battery bracket. [Figure 16] This is a perspective view of the protective frame. [Figure 17] This is an explanatory diagram of the protective space formed by the protective frame and safety frame. [Figure 18] This is a perspective view of electrical components. [Figure 19] This is a left side view of an electrical component. [Figure 20] This is a perspective view of the casing with the lid removed. [Figure 21] This is a plan view of the casing with the lid removed. [Figure 22] This is a vertical cross-section of the main body in the front-to-back direction. [Figure 23] This is a perspective view of the electrical box and electric motor. [Figure 24] This is a right-side view of the controller for the work vehicle, located on the hood. [Figure 25] This is a perspective view showing the lid located above the charging connector in the closed position. [Figure 26] This is a perspective view with the lid located above the charging connector open. [Figure 27] This is a front view illustrating the orientation of the charging connector when the lid is closed. [Figure 28] This is a front view illustrating the orientation of the charging connector when the lid is open. [Figure 29] This is a rear view illustrating the locking portion and the engaged member located at the bottom of the lid. [Figure 30] This is a left side view illustrating the locking portion and the engaged member located at the bottom of the lid. [Figure 31] This is a perspective view of the charging connector. [Figure 32] This is a perspective view of a charging connector in a different configuration. [Figure 33] Here are perspective views of other configurations of the charging connector. [Figure 34] This is a perspective view illustrating the opening formed in the front wall of the grass collection container. [Figure 35]Figure 34 is a perspective view showing the opening covered with a filter. [Figure 36] This is a perspective view illustrating the cooling pipes used to cool an electric motor. [Modes for carrying out the invention]

[0031] As shown in Figure 1, a pair of front wheels 2 are provided at the front of the vehicle body 1 of a work vehicle such as a riding lawnmower, and a pair of rear wheels 3 are provided at the rear of the vehicle body 1. A work implement 4 for cutting grass, etc., is provided between the front wheels 2 and the rear wheels 3 on the underside of the vehicle body 1. A bonnet section 5 is provided at the front of the upper part of the vehicle body 1, and a control section 6 for the operator is provided at the rear of the bonnet section 5. A safety frame (ropes) 7 for protecting the operator is provided at the rear of the control section 6, and a grass collection container 8 for storing grass, etc. cut by the work implement 4 is provided at the bottom of the safety frame 7.

[0032] As shown in Figures 2 and 3, the bonnet section 5 is provided with a battery 50 that stores power supplied to an electric motor (the "first electric motor" in the claim) 30 that drives the rear wheels 3 and an electric motor (the "second electric motor" in the claim) 40 that drives the work machine 4, and the battery 50 is covered by a bonnet cover 5A. The bonnet cover 5A is supported by a support shaft (not shown) that extends in the left-right direction and is provided at the front of the vehicle body 1. This makes it possible to effectively utilize the space formed in the bonnet section 5 and to suppress differences in the front-rear weight balance of the work vehicle.

[0033] A cockpit 60 is provided at the rear of the control unit 6, and a steering wheel 62 is provided in front of the cockpit 60. The steering wheel 62 is supported on the upper part of a steering shaft 63 that extends in the vertical direction, and the steering shaft 63 is supported by a steering post 11.

[0034] On the left fender 64L to the left of the cockpit 60, there is a cleaner lever 65 for operating a cleaner (not shown) that forcibly transports the remaining cut grass from the chute 46, which transports the cut grass cut by the implement 4 to the grass collection container 8, into the grass collection container 8. On the right fender 64R of the cockpit 60, there is a lifting lever 66 for operating the raising and lowering of the implement 4.

[0035] A brake pedal 68 is provided on the left side of the steering post 11 on the floor 67 of the control unit 6, and accelerator pedals 69 for forward and reverse are provided on the right side.

[0036] Electrical components 61 are provided below the cockpit 60 of the control unit 6. This allows for effective use of the space formed below the cockpit 60.

[0037] The safety frame 7 is formed from a left support column 7L that extends vertically, a right support column 7R that extends vertically, and an inverted U-shaped connecting portion 7A that connects the upper parts of the left support column 7L and the right support column 7R.

[0038] As shown in Figures 4-7, an electric motor 30, such as a synchronous motor or induction motor, which is operated by a three-phase AC voltage waveform that drives the rear wheel 3, is provided below the electrical components 61. The output shaft 30A, which extends in the left-right direction from the electric motor 30, is connected to the upper part of a gearbox 31 that reduces the output rotation transmitted from the output shaft 30A to increase the output torque or reverse the direction of rotation. The electric motor 30 is positioned offset from the center in the left-right direction towards the left rear wheel 3L.

[0039] The output rotation, which is increased or decreased in the gearbox 31, is transmitted to the drive shaft 33, which extends in the left-right direction, via a differential gear 32, which is located at the bottom of the gearbox 31 and is formed by differential gears or the like. The output rotation transmitted to the drive shaft 33 is then transmitted to the left rear wheel 3L and the right rear wheel 3R, which are supported at both ends of the drive shaft 33.

[0040] Below the electric motor 30, there is an electric motor 40, such as a synchronous motor or induction motor, which is operated by a three-phase AC voltage waveform that drives the work implement 4. The output shaft 40A, which extends in the front-rear direction of the electric motor 40, is connected to the rear of a universal joint 41, which also extends in the front-rear direction. The output shaft 40A is also provided above the drive shaft 33, perpendicular to the drive shaft 33. This allows for effective use of the space below the electric motor 30. Furthermore, the transmission path between the electric motor 40 and the work implement 4 can be shortened, allowing for efficient transmission of the output rotation of the electric motor 40 to the work implement 4. The electric motor 40 is positioned offset from the center in the left-right direction towards the left rear wheel 3L.

[0041] The front of the universal joint 41 is connected to a gearbox 42, which reduces the output rotation transmitted from the universal joint 41 to increase the output torque. The output rotation transmitted to the gearbox 42 is transmitted to the left cutting blade (not shown) located in the left discharge passage 45L of the work implement 4 via an output shaft formed in the vertical direction of the gearbox 42.

[0042] A connecting member 43, which extends in the left-right direction, is connected to the right side of the gearbox 42, and the right side of the connecting member 43 is connected to the gearbox 44. The output rotation transmitted to the gearbox 44 is transmitted to the right cutting blade (not shown) provided in the right discharge passage 45R of the work machine 4 via an output shaft formed by extending the gearbox 44 in the vertical direction. The rotational speeds of the output shafts of the gearbox 42 and the gearbox 44 are the same, but their directions of rotation are opposite; that is, in a plan view, the output shaft of the gearbox 42 rotates clockwise, and the output shaft of the gearbox 44 rotates counterclockwise.

[0043] The outlets of the left discharge passage 45L and the right discharge passage 45R are connected to the inlet of the chute 46, which transports the cut grass and other materials to the grass collection container 8. The outlet of the chute 46 is connected to the inlet 8A of the grass collection container 8. The electric motors 30 and 40 are located in front of the front wall 100 of the grass collection container 8, and the rear of the chute 46 extends further back than the rear of the electric motors 30 and 40.

[0044] In a plan view, the front of the chute 46 is located to the right of the universal joint 41, and the middle of the chute 46 is located to the right of the gearbox 31. In a rear view, the chute 46 and the grass collection container 8 are located between the gearbox 31 and the right rear wheel 3R. This allows a large chute 46 to be installed in the space formed to the right of the universal joint 41 and the gearbox 31, enabling efficient transport of grass and other materials cut by the implement 4 to the grass collection container 8.

[0045] In a side view, the upper wall of the chute 46 is formed with an upward slope towards the rear, and the rear of the chute 46 extends downward below the electrical components 61. This makes the rear of the chute 46 larger, preventing clogging of grass and other debris inside the chute 46.

[0046] As shown in Figure 8, the rotational speeds of the left and right cutting blades can be increased or decreased by operating the speed shift lever 47 located on the left side of the steering wheel 62. When the speed shift lever 47 is in the neutral position, the output rotation of the electric motor 40 becomes zero, and the rotational speeds of the left and right cutting blades also become zero. When the speed shift lever 47 is moved from the neutral position to the forward tilt position, the output rotation of the electric motor 40 is increased or decreased according to the angle of the forward tilt position, and the rotational speeds of the left and right cutting blades are also increased or decreased accordingly. Furthermore, when the speed shift lever 47 is moved from the neutral position to the rearward tilt position, the output rotation of the electric motor 40 is increased or decreased according to the angle of the rearward tilt position, the direction of rotation of the output rotation of the electric motor 40 becomes reversed, and the rotational speeds of the left and right cutting blades are also increased or decreased accordingly, causing the rotational directions of the left and right cutting blades to be reversed.

[0047] As shown in Figures 9 and 10, the vehicle body 1 is formed from a vehicle body main body 10 that supports the front wheels 2 and rear wheels 3, and a steering post 11 that supports the steering shaft 63.

[0048] The main body of the vehicle 10 has left front and rear frames 10L and right front and rear frames 10R that extend in the front-rear direction, and a left connecting portion 11L and a right connecting portion 11R that extend forward are formed at the lower part of the steering post 11.

[0049] The left connecting portion 11L is fixed to the left front and rear frame 10L by fastening means such as bolts, and the right connecting portion 11R is fixed to the right front and rear frame 10R by fastening means such as bolts, forming a single vehicle body 1.

[0050] A left support member 12L is provided at the front of the left front / rear frame 10L, and the connecting portion of the left support member 12L is formed with an upward slope to the left. Similarly, a right support member 12R is provided at the front of the right front / rear frame 10R, and the connecting portion of the right support member 12R is formed with an upward slope to the right. The left support member 12L and the right support member 12R are made of channel steel.

[0051] A left support member 13L is provided at the front of the left connecting section 11L, and the connecting portion of the left support member 13L is formed with an upward slope to the left. Similarly, a right support member 13R is provided at the front of the right connecting section 11R, and the connecting portion of the right support member 12R is formed with an upward slope to the right. The left support member 13L and the right support member 13R are made of channel steel.

[0052] A protruding portion 14 is formed at the lower part of the steering post 11, projecting forward at a predetermined distance in the left-right direction, and a cushioning member 15 made of rubber or the like is provided at the tip of the protruding portion 14.

[0053] A left upper and lower frame 20L is provided at the rear of the left front and rear frame 10L, and a right upper and lower frame 20R is provided at the rear of the right front and rear frame 10R, and the upper parts of the left upper and lower frame 20L and the right upper and lower frame 20R are connected to left and right frames 21 that extend in the left and right direction.

[0054] The left side of the left frame 21 is provided with a left connecting section 22L that supports the lower part of the left support column 7L of the safety frame 7, and the right side of the left frame 21 is provided with a right connecting section 22R that supports the lower part of the right support column 7R of the safety frame 7.

[0055] As shown in Figures 11 and 12, the bonnet section 5 is equipped with a battery 50 that stores power supplied to the electric motor 30 that drives the rear wheels 3 and the electric motor 40 that drives the work equipment 4, and a battery 55 that stores power supplied to the controller 77 for the work vehicle, which controls the electronic equipment mounted on the vehicle body 1. The controller 77 controls the electronic equipment of the entire work vehicle, for example, by outputting a signal to control the electric motor 30 via an inverter device 81 in response to the operation input of the accelerator pedal 69, and by outputting a signal to control the electric motor 40 via an inverter device 82 in response to the operation input of the gear shift lever 47. In this embodiment, the battery 50 is made of a lithium-ion battery with high energy density, and the battery 55 is made of a lead-acid battery. Figures 11 and 12 show the right battery 50R that forms the battery 50, and a configuration in which a spacer 56 is provided to the left of the right battery 50R in place of the left battery 50L.

[0056] The spacer 56 and the right battery 50R are fixed to the vehicle body 10 and the steering post 11 via the battery bracket (the "bracket" in the claims) 52. The battery 55 is mounted on the upper surface of a support member 57 that extends forward from the front of the front left and right frames 52A of the battery bracket 52. This allows for efficient maintenance and inspection of the batteries 50 and 55, and also prevents rainwater from getting on the batteries 50 and 55.

[0057] A protective frame 25 is provided at the midpoint between the spacer 56 and the right battery 50R in the front-rear direction, extending along the outer circumference of both the spacer 56 and the right battery 50R. This prevents damage to the battery 50 in the event of the work vehicle tipping over.

[0058] As shown in Figure 13, the battery 50 installed in the bonnet section 5 is formed from a left battery 50L installed on the left side and a right battery 50R installed on the right side. The left battery 50L and the right battery 50R are formed by connecting multiple high-energy-density lithium-ion batteries in series and parallel, and are formed to have the same shape and capacity. This allows the work vehicle to run for a long time by installing the left battery 50L and the right battery 50R in the bonnet section 5 and connecting the left battery 50L and the right battery 50R in parallel, enabling mowing of grass in a large park. Furthermore, when mowing grass in a small park, either the left battery 50L or the right battery 50R can be removed from the bonnet section 5 and used as a replacement battery.

[0059] When using the left battery 50L and the right battery 50R connected in parallel, the upper front surfaces of the left battery 50L and the right battery 50R are connected by the front connecting plate 51A, and the upper rear surfaces of the left battery 50L and the right battery 50R are connected by the rear connecting plate 51B. This firmly connects the upper surfaces of the left battery 50L and the right battery 50R via the front connecting plate 51A and the rear connecting plate 51B, preventing breakage of cables connecting the terminals of the left battery 50L and the right battery 50R. In addition, the lower surfaces of the left battery 50L and the right battery 50R are fitted into the inner circumference of the battery bracket 52. This allows for effective use of the space formed in the bonnet section 5.

[0060] As shown in Figures 11 and 12, when the left battery 50L is removed and only the right battery 50R is used, a spacer 56 is provided to the left of the right battery 50R, which is formed to have the same shape and weight as the left battery 50L in a plan view. This suppresses a large shift in the center of gravity of the work vehicle and prevents any discomfort that may occur during operation.

[0061] As shown in Figure 14, the battery bracket 52 is formed of a left front and rear frame 52L and a right front and rear frame 52R that extend in the front and rear direction, a front left and right frame 52A that connects the front parts of the left front and rear frame 52L and the right front and rear frame 52R, and a rear left and right frame 52B that connects the rear parts of the left front and rear frame 52L and the right front and rear frame 52R. The left front and rear frame 52L and the right front and rear frame 52R are made of angle steel, while the front left and right frame 52A and the rear left and right frame 52B are made of channel steel.

[0062] The connecting portion of the left front and rear frame 52L is formed with an upward slope to the left, and the connecting portion of the right front and rear frame 52R is formed with an upward slope to the right. In a rear view, the upward slope to the left of the connecting portion of the left support member 13L, the connecting portion of the left support member 12L, and the connecting portion of the left front and rear frame 52L are formed at the same angle, and the upward slope to the right of the connecting portion of the right support member 12R, the connecting portion of the right support member 12R, and the connecting portion of the right front and rear frame 52R are formed at the same angle.

[0063] A round left vibration damping member 53L is provided on the lower surface of the connecting portion of the left front and rear frame 52L at a predetermined distance in the front-rear direction, and a round right vibration damping member 53R is provided on the lower surface of the connecting portion of the right front and rear frame 52R at a predetermined distance in the front-rear direction.

[0064] The left front and rear frame 52L is connected to the left support member 12L of the left front and rear frame 10L and the left support member 13L of the left connecting section 11L via the left vibration damping member 53L, and the right front and rear frame 52R is connected to the right support member 12R of the right front and rear frame 10R and the right support member 13R of the right connecting section 11R via the right vibration damping member 53R. This suppresses the transmission of vibrations from the vehicle body 10 generated when the work vehicle is running to the battery 50, thereby preventing damage to the battery 50.

[0065] As shown in Figure 15, the connecting portion of the left front and rear frame 52L has a leftward-sloping surface perpendicular to the left imaginary line (the "first imaginary line" in the claim) 54L, which connects the center of the left vibration damping member 53L and the center of the left front wheel 2L. Similarly, the connecting portion of the right front and rear frame 52R has a rightward-sloping surface perpendicular to the right imaginary line (the "second imaginary line" in the claim) 54R, which connects the center of the right vibration damping member 53R and the center of the right front wheel 2R. This suppresses large vibrations caused by unevenness in the running surface via the front wheels 2 and rear wheels 3, thereby preventing damage to the battery 50, etc. Reference numeral 35 indicates the front wheel support frame that supports the left and right front wheels 2, and reference numeral 36 indicates the connecting portion between the front wheel support frame and the running vehicle body 10, and indicates the pivot axis of the front wheel support frame.

[0066] The tip of the cushioning member 15 of the steering post 11 is pressed against the rear surface of the left and right rear frames 52B of the battery bracket 52. This prevents the battery 50 from moving backward when the work vehicle starts, thereby preventing damage to the battery 50.

[0067] As shown in Figure 16, the protective frame 25 is formed from an upper and lower protective frame 26 that extends in the vertical direction, and a front and rear protective frame 27 that extends from the middle of the upper and lower protective frame 26 toward the rear.

[0068] The upper and lower protective frame 26 is formed from a left upper and lower frame 26L extending upward from the left front and rear frame 10L, an upper and lower right frame 26R extending upward from the right front and rear frame 10R, and an inverted U-shaped connecting portion 26A that connects the upper parts of the left upper and lower frame 26L and the upper and lower right frame 26R.

[0069] The left upper and lower frame 26L is located on the left side of the left battery 50L, the right upper and lower frame 26R is located on the right side of the right battery 50R, and the connecting section 26A is located on the upper side of the top surfaces of the left battery 50L and the right battery 50R. The left upper and lower frame 26L, the right upper and lower frame 26R, and the connecting section 26A are all made of square pipe.

[0070] The front and rear protective frame 27 is formed from a left front and rear frame 27L that extends rearward from the middle of the left upper and lower frame 26L in the vertical direction, a right front and rear frame 27R that extends rearward from the middle of the upper and lower right frame 26R in the vertical direction, and a connecting portion 27A that extends in the left-right direction and connects the rear parts of the left front and rear frame 27L and the right front and rear frame 27R. The connecting portion 27A is detachably fixed to the lower part of the steering post 11 by fastening means such as bolts. This increases the rigidity of the protective frame 25, which suppresses deformation of the protective frame 25 when the work vehicle overturns, and further prevents damage to the battery 50. In this embodiment, it is fixed to the lower part of the steering post 11 via the connecting portion 27A, but it is also possible to fix the rear parts of the left front and rear frame 27L and the right front and rear frame 27R to the lower part of the steering post 11 without providing the connecting portion 27A.

[0071] The left front and rear frame 27L is located on the left side of the left battery 50L, the right front and rear frame 27R is located on the right side of the right battery 50R, and the connecting section 27A is located on the rear side of the rear surfaces of the left battery 50L and the right battery 50R. The left front and rear frame 27L and the right front and rear frame 27R are made of square pipes, and the connecting section 27A is made of channel steel.

[0072] As shown in Figure 17, in a side view, the imaginary line (the "third imaginary line" in the claim) 28 connecting the top of the connecting portion 26A of the upper and lower protective frames 26 and the base of the connecting portion 7A of the safety frame 7 is formed to be located above the steering wheel 62. This creates a large protective space below the imaginary line 28, thereby reducing the risk of workers colliding with external tree branches or other objects while the work vehicle is in motion, and improving work safety.

[0073] As shown in Figures 18 and 19, the electrical components 61 consist of an electrical box 70 equipped with an inverter device 81 that supplies high-voltage power, and a charger 73 used to charge the battery 50, which is located below the electrical box 70. In a side view, the front of the electrical box 70 is located further forward than the front of the cockpit 60, and the front of the charger 73 is located further forward than the front of the electrical box 70. This creates a large space behind the electrical box 70 and the charger 73, and by providing the upper wall of the chute 46, which is formed with an upward sloping rearward incline, the vertical cross-sectional area of ​​the chute 46 in the left-right direction can be increased, thereby suppressing clogging of cut grass inside the chute 46. The input voltage of the charger 73 in this embodiment is an AC voltage of 100 to 240V.

[0074] The electrical box 70 is formed from a main body 70A and a lid 70B, which house the inverter device 81 and the like. The lid 70B is pivotably supported by a support shaft 70C that extends in the left-right direction and is located at the front of the main body 70A. In addition, in a side view, the upper surface of the lid 70B is formed with a rearward slope. This prevents rainwater from accumulating on the upper surface of the lid 70B.

[0075] The main body 70A is attached to support members 16A that extend in the front-rear direction, which are provided on both sides of the left and right frames 16 that extend in the left-right direction at the rear of the vehicle body 10, via grommets 71 provided at the four corners of the lower surface of the main body 70A. This suppresses the transmission of vibrations from the vehicle body 10 generated when the work vehicle is running to the inverter device 81, etc., thereby preventing damage to the inverter device 81, etc.

[0076] The charger 73 is mounted via grommets 74 provided at the four corners of the underside of the charger 73 to support members 18 that have a predetermined length in the front-rear direction and extend in the left-right direction, which are provided on the left and right frames 17 located on the front side of the left and right frames 16 of the vehicle body 10. This suppresses the transmission of vibrations from the vehicle body 10 generated when the work vehicle is running to the charger 73, thereby preventing damage to the charger 73.

[0077] The intermediate portion of the support member 18 in the front-rear direction is formed to protrude downward from the front and rear portions of the support member 18, and a ventilation hole 18A is formed in the intermediate portion to allow outside air to circulate. A fan 75 is provided on the upper surface of the charger 73 to forcibly circulate outside air. This prevents the charger 73 from becoming excessively hot during use and prevents damage to the electrical components that make up the charger 73.

[0078] As shown in Figures 20-22, a left terminal block 80L and a right terminal block 80R are provided on the left front of the lower wall of the main body 70A, and an inverter device 81 that generates a three-phase AC voltage waveform for operating the motor 30 and an inverter device 82 that generates a three-phase AC voltage waveform for operating the motor 40 are provided on the left rear of the lower wall of the main body 70A, and a converter device 83 that converts the 45V DC voltage supplied from the battery 50 to a 12V DC voltage supplied when charging the battery 55 is provided between the right terminal block 80R and the inverter device 82. This allows the inverter device 81 and other components heated by the lower wall of the main body 70A, which is cooled by the outside air, to be efficiently cooled. In this specification, the left terminal block 80L and the right terminal block 80R are collectively referred to as terminal block 80.

[0079] To the right of the inverter device 82 on the lower wall of the main body 70A, a data transfer device 84, such as an isolated CAN transceiver, is provided for data transfer between the controller 77 and the inverter device 81, etc. This blocks noise such as electromagnetic waves generated by the inverter device 81, etc., thereby improving the reliability of data transfer. Furthermore, electrical signals can be communicated between the controller 77, which is powered by a 12V battery 55, and the inverter device 81, etc., which is powered by a 45V battery 50, via the data transfer device 84.

[0080] Cable 85A connecting the battery 50 and the terminal block 80, and cable 85B connecting the controller 77 and the data transfer device 84 are routed by passing them through the inner circumference of a grommet provided in the opening of the front wall of the electrical box 70. Cable 86A connecting the motor 30 and the inverter device 81, and cable 86B connecting the motor 40 and the inverter device 82 are routed by passing them through the inner circumference of a grommet provided in the opening of the rear wall of the electrical box 70. This enhances the airtightness of the electrical box 70 and prevents rainwater and dust from entering the electrical box 70. Also, as shown in Figure 23, the motors 30 and 40 are located below the inverter device 81, which is located on the left rear of the main body 70A. This allows the length of cables 86A and 86B to be shortened and makes routing cables 86A and 86B easier.

[0081] The left terminal block 80L and the right terminal block 80R are connected to the inverter device 81, the left terminal block 80L and the right terminal block 80R are connected to the inverter device 82, and the inverter device 81 is connected to the inverter device 82, and the inverter device 81 is connected to the inverter device 82, all of which are connected by metal plate-shaped busbars 87. This allows for efficient wiring of the left terminal block 80L and the inverter device 81, etc.

[0082] As shown in Figure 24, rectangular support members 76 extending in the front-rear direction are provided on the upper and lower right frames 26R of the upper and lower protective frames 26 provided on the bonnet section 5. A controller 77 for the work vehicle is provided on the rear of the right side of the support member 76, and a relay 78 and a fuse 79 are provided on the front. The controller 77, relay 78 and fuse 79 are supplied with 12V DC power from the battery 55. This allows the controller 77 to be installed at a distance from the inverter devices 81 and 82, preventing malfunctions caused by noise such as electromagnetic waves generated by the inverter devices 81 and 82.

[0083] As shown in Figures 25 and 26, a cover (lid) 91 is provided on the right side of the rear of the cleaner lever 65 on the left fender 64L, covering the upper part of the charging connector 90 into which the charging cable is inserted when charging the battery 50. The cover 91 is fitted inside a case 92 having a rectangular opening.

[0084] As shown in Figure 27, when the cover 91 is closed, the charging connector 90 is in a reclined position with its longitudinal axis A, which extends in the left-right direction, parallel to the upper surface of the left fender 64L, and the insertion port 90B of the charging connector 90 is perpendicular to the vertical direction. This prevents rainwater that has seeped in through the gap between the left fender 64L and the cover 91 from seeping into the insertion port 90B. Note that when in the reclined position, the insertion port 90B of the charging connector 90 is facing to the left.

[0085] As shown in Figure 28, when the cover 91 is opened, the charging connector 90 is in an upright position with its longitudinal axis 90A intersecting the upper surface of the left fender 64L at approximately 45 degrees. This allows the plug of the charging cable to be easily inserted into the socket 90B of the charging connector 90. When the cover 91 is open, the longitudinal axis 91A in the left-right direction of the cover 91 also intersects the upper surface of the left fender 64L at approximately 45 degrees.

[0086] As shown in Figures 29 and 30, the right side of the charging connector 90 and the middle part of the lower surface of the cover 91 in the left-right direction are connected by a connecting member 93. This allows the cover 91 to be opened and closed to change the orientation of the charging connector 90.

[0087] A support member 94, formed in a roughly quarter-circle shape and extending downward from the right side of the lower surface of the cover 91, is rotatably supported by a support shaft (the "first support shaft" in the claim) 95 that extends in the front-rear direction and is provided on the right side of the case 92. 。

[0088] A wave-shaped uneven surface 94A is formed on the outer circumference of the support member 94, and the depth of the recesses in the uneven surface 94A is formed to increase in the counterclockwise direction on the outer circumference of the support member 94. A bracket 96 is also provided on the left fender 64L, and an engaging member 97 made of a leaf spring is provided on the upper part of the bracket 96, extending toward the uneven surface 94A of the support member 94. A mountain-shaped protrusion 97A is formed on the upper part of the engaging member 97, which engages with the uneven surface 94A of the support member 94. As a result, when opening the cover 91 from the closed position to the open position, a clicking vibration is transmitted to the operator's fingertips, and this vibration increases as the position approaches the open position from the closed position. Similarly, when closing the cover 91 from the open position to the closed position, a clicking vibration is transmitted to the operator's fingertips, and this vibration decreases as the position approaches the closed position from the open position, allowing the operator to recognize the opening and closing operation of the cover 91 and preventing errors.

[0089] As shown in Figure 31, a resin protective cover 98 is provided on the outer circumference of the insertion port 90B of the charging connector 90. A support shaft (the "second support shaft" in the claim) 98A extending in the front-rear direction is formed on the upper part of the protective cover 98, and a cap 98B covering the insertion port 90B is supported on the support shaft 98A so as to be openable and closable. This covers the insertion port 90B of the charging connector 90 with the cap 98B, further suppressing the penetration of rainwater that has seeped in through the gap between the left fender 64L and the cover 91 into the insertion port 90B. The insertion port 90B of the charging connector 90 is connected to the charger 73 via a cable (not shown). As a result, when the charging cable is inserted into the insertion port 90B of the charging connector 90, the battery 50 can be charged via the charger 73.

[0090] As shown in Figure 32, the charging connector 90 can be positioned with its socket 90B facing upwards, so that it is not linked to the opening and closing of the cover 91. This allows for the elimination of support members 94 and other components, thereby reducing the number of parts. Alternatively, as shown in Figure 33, the charging connector 90 can be positioned with its socket 90B facing forward at the front of the underside of the cockpit 60. This allows for the placement of electrical components such as sensors in the left fender 64L.

[0091] As shown in Figures 34 and 35, a rectangular inlet 8A is formed on the right side of the front wall 100 of the grass collection container 8, to which the outlet of the chute 46 is connected, and a rectangular ventilation opening 101 is formed on the left side of the inlet 8A. This allows the conveying air blown into the grass collection container 8 to be blown from the ventilation opening 101 towards the electric motors 30 and 40, thereby suppressing the temperature rise of the electric motors 30 and 40. The conveying air is generated by the rotation of the left and right cutting blades of the work machine 4 and is blown through the chute 46 to the grass collection container 8.

[0092] It is preferable to cover the ventilation opening 101 with a filter 102 from the rear. This prevents the mowed grass stored in the grass collection container 8 from being discharged to the outside through the ventilation opening 101.

[0093] As shown in Figure 36, a cooling pipe (the "first cooling pipe" in the claim) 105 through which cooling water for cooling the electric motor 30 circulates and a cooling pipe (the "second cooling pipe" in the claim) 106 through which cooling water for cooling the electric motor 40 circulates are installed side by side to the left of the loading port 8A on the rear surface of the front wall 100 of the grass collection container 8. As a result, the cooling water flowing through the cooling pipes 105 and 106 is cooled by the conveying air blown into the grass collection container 8, thereby further suppressing the temperature rise of the electric motors 30 and 40. [Explanation of Symbols]

[0094] 1. Running vehicle 2 Front wheels 2L left front wheel 2R Right front wheel 3 Rear wheels 4. Work equipment 5. Hood section 6. Control Unit 7. Safety Frame 7A connection part 8 Grass collection container 8A Loading entrance 10. Main body of the running vehicle 11 Steering Post 12L Left support member 12R Right support member 13L Left support member 13R Right support member 15. Cushioning material 26 Top and bottom protective frames 27 Front and rear protective frames 28 Virtual Line (Third Virtual Line) 30 Electric motor (1st electric motor) 40 Electric motor (second electric motor) 46 Shooter 50 batteries 50L Left Battery 50R Right Battery 52 Battery bracket (bracket) 52L left front and rear frame 52R Right front and rear frame 53L Left vibration damping component 53R Right vibration damping component 54L Left virtual line (1st virtual line) 54R Right virtual line (second virtual line) 60 cockpits 62 Steering Wheel 63 Steering shaft 64L Left fender 90 Charging connector 90A Long shaft 90B socket 91 Cover 93 Connecting member 94 Support Member 94A Uneven part 95 Support shaft (1st support shaft) 97 Engaging Member 97A Convex part 98 Protective Cover 98A spindle (second spindle) 98B Cap 100 front wall 101 Ventilation hole 105 Cooling pipe (first cooling pipe) 106 Cooling pipe (second cooling pipe)

Claims

1. In a work vehicle having a running body (1) with a pair of left and right front wheels (2) at the front, a pair of left and right rear wheels (3) at the rear of the running body (1), a weed-cutting implement (4) between the front wheels (2) and rear wheels (3) of the running body (1), a bonnet section (5) with a predetermined space at the front of the running body (1), a control section (6) on the rear of the bonnet section (5) where the operator sits, and a grass collection container (8) on the rear of the control section (6) for collecting the weeds cut by the implement (4), A first electric motor (30) for driving the rear wheels (3) and a second electric motor (40) for driving the work machine (4) are provided on the front side of the grass collection container (8). A battery (50) is provided in the bonnet section (5) to supply high-voltage power to the first motor (30) and the second motor (40). A cover (91) is provided on the upper part of the left fender (64L) located to the left of the cockpit (60) of the control unit (6), and is supported by a first support shaft (95) that extends in the front-rear direction so as to be able to open and close. A charging connector (90) for charging the battery (50) is connected to the lower part of the cover (91) via a connecting member (93). When the cover (91) is closed, the longitudinal axis (90A) of the charging connector (90) extends in the left-right direction, and the insertion port (90B) of the charging connector (90) faces to the left. A work vehicle characterized in that, when the cover (91) is opened, the longitudinal axis (90A) of the charging connector (90) rotates clockwise in a view of the axis of the first support shaft (95) as seen from the rear.

2. An arc-shaped support member (94) is provided at the lower part of the cover (91) and is rotatably supported by the first support shaft (95). An uneven portion (94A) is formed on the outer circumference of the support member (94). The work vehicle according to claim 1, wherein the left fender (64L) is provided with a plate-shaped engaging member (97) extending toward the uneven portion (94A), and a protrusion (97A) that engages with the uneven portion (94A) is formed at the tip of the engaging member (97).

3. The work vehicle according to claim 2, wherein the depth of the uneven portion (94A) is formed to increase in a counterclockwise direction.

4. The work vehicle according to claim 1, wherein a cap (98B) that covers the insertion port (90B) is rotatably supported on a second support shaft (98A) that extends in the front-rear direction of a protective cover (98) fitted onto the charging connector (90).

5. The aforementioned work machine (4) and the grass collection container (8) are connected by a chute (46). The work vehicle according to claim 1, wherein a ventilation opening (101) is formed to the left of the entrance (8A) that connects the rear of the chute (46) of the front wall (100) of the grass collection container (8), for blowing air forward from the grass collection container (8).

6. The aforementioned work machine (4) and the grass collection container (8) are connected by a chute (46). The work vehicle according to claim 1, wherein a first cooling pipe (105) through which cooling water for cooling the first electric motor (30) circulates and a second cooling pipe (106) through which cooling water for cooling the second electric motor (40) circulates are arranged side by side to the left of the loading entrance (8A) that connects the rear of the chute (46) of the front wall (100) of the grass collection container (8).

7. Left support members (12L, 13L) are provided on the left side of the aforementioned vehicle body (1) at predetermined intervals in the front-rear direction. Right support members (12R, 13R) are provided on the right side of the aforementioned vehicle body (1) at predetermined intervals in the front-rear direction. A left vibration damping member (53L) is provided on the left front and rear frame (52L) of the bracket (52) fitted onto the battery (50) at a predetermined distance in the front-rear direction. A right vibration damping member (53R) is provided on the right front and rear frame (52R) of the bracket (52) at a predetermined distance in the front-rear direction. The work vehicle according to claim 1, wherein, in a front view, the connecting portion of the left support member (12L, 13L) and the connecting portion of the left front and rear frame (52L) are formed with an upward slope to the left, and the connecting portion of the right support member (12R, 13R) and the connecting portion of the right front and rear frame (52R) are formed with an upward slope to the right.

8. In a front view, the inclined surface of the connecting portion of the left support member (12L, 13L) and the connecting portion of the left front and rear frame (52L) is formed perpendicular to a first imaginary line (54L) connecting the center of the left vibration damping member (53L) and the center of the left front wheel (2L) of the front wheel (2), and the inclined surface of the connecting portion of the right support member (12R, 13R) and the connecting portion of the right front and rear frame (52R) is formed perpendicular to a second imaginary line (54R) passing through the center of the right vibration damping member (53R) and the center of the right front wheel (2R) of the front wheel (2), as described in claim 7.

9. The aforementioned vehicle body (1) is formed by a vehicle body main body (10) extending in the front-rear direction and a steering post (11) extending in the vertical direction that supports the steering shaft (63) of the control unit (6). An inverted U-shaped upper and lower protective frame (26) is provided along the outer circumference of the battery (50), and an inverted U-shaped safety frame (7) is provided behind the cockpit (60). The work vehicle according to claim 1, wherein, in a side view, a third imaginary line (28) connecting the top of the upper and lower protective frame (26) and the base of the connecting portion (7A) of the safety frame (7) extends above the steering wheel (62) supported on the upper part of the steering shaft (63).

10. The work vehicle according to claim 9, wherein a front and rear protective frame (27) extending to the rear is provided in the middle of the upper and lower protective frame (26) in the vertical direction, and the rear part of the front and rear protective frame (27) is connected to the steering post (11).

11. A buffer member (15) is provided at a predetermined distance in the left-right direction at the lower part of the steering post (11). The work vehicle according to claim 10, wherein the tip of the cushioning member (15) is pressed against the rear surfaces of the left battery (50L) and the right battery (50R) of the battery (50), respectively.

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