JP2012175923A - Electric working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric working machine in which an electric power is consumed depending on only operations and travel, thereby reducing the power consumption.SOLUTION: The electric working machine driven by the electric power from a battery 11 includes: an operation unit (a plowing unit 4) that has working devices (a tilling shaft 81 and a tilling tine 82), and a working electric motor 61 for driving the working devices; a traveling unit 3 that has traveling devices (an axle 51 and travel wheels 52, 52), and a traveling electric motor 31 for driving the traveling devices; and a machine unit 2 that has a controller 13 for controlling a power supply to the work electric motor 61 and the traveling electric motor 31, and an operation part 20.

Description

  The present invention relates to a technique for an electric working machine.

  2. Description of the Related Art Conventionally, an electric work machine that drives a motor with electric power from a battery and transmits power from the motor to a working device such as a tilling device to plow a field or the like has been known.

  An electric management machine that is one of the electric working machines shown in Patent Document 1 includes a tiller having a traveling wheel for traveling on a field and a tilling claw for plowing the field, and an output rotational force of one electric motor. Is transmitted to the tilling shaft to which the traveling wheel and the tilling claw are attached via the speed change mechanism. In such a configuration, the electric motor is equipped with an electric motor with a capacity (output) that can run and plow at the same time. Even so, power consumption has been consumed more than necessary.

JP 2006-115777 A

  Therefore, an object of the present invention is to provide an electric working machine that can reduce power consumption by consuming electric power only for work and traveling.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to the first aspect of the present invention, there is provided an electric working machine driven by electric power from a battery, the working unit having a working device and a working electric motor for driving the working device, and the traveling device and the traveling device are driven. A traveling unit having a traveling electric motor, a control unit that controls power supply to the working electric motor and the traveling electric motor, and an airframe unit having an operation unit.

  In Claim 2, it is an electrically-driven working machine of Claim 1, Comprising: The said work unit and the said traveling unit each have a reduction gear.

  In Claim 3, it is an electrically-driven working machine of Claim 1 or Claim 2, Comprising: The said work unit and the said traveling unit are comprised so that attachment or detachment is respectively possible with respect to the said body unit.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, since the work unit and the traveling unit have separate electric motors, the working device and the traveling device can be individually controlled. That is, when one of the working device and the traveling device is used, it is not necessary to drive the electric motor for the other unused one, which leads to power saving. Further, there is no need to move gears or the like when shifting, and the driving of the electric motor can be stopped for each unit. Since the drive of the working device of the work unit can be easily stopped, it is possible to safely move backward or without work.

  In the second aspect, in addition to the effect of the first aspect, the work unit and the traveling unit each have a separate reduction gear, so that the reduction gear can have a strength corresponding to the output of each motor. Connected.

In Claim 3, in addition to the effects of Claims 1 and 2, since the work unit can be attached or detached as necessary, such as when the work unit is unnecessary or when the traveling unit is unnecessary, the electric work The entire machine can be reduced in weight by unnecessary units, and the weight load is reduced, leading to power saving.
By making each unit detachable, for example, if the work unit is equipped with a rotary tiller, the work unit can be removed and cleaning (maintenance) of each component can be easily performed.
By preparing a plurality of work units having different work, different work can be performed with one machine unit, and versatility is improved.

The side view which showed the whole structure of the electrically-driven working machine which concerns on 1st embodiment of this invention. The simplified sectional side view which similarly shows the internal structure of each unit. 1 is a control circuit diagram according to an embodiment of the present invention. The side view which showed the whole structure of the electrically-driven working machine which concerns on 2nd embodiment of this invention. The side view which similarly showed the connection part of the trolley | bogie unit, and the structure of the periphery. The side view which showed the whole structure of the electrically-driven working machine which concerns on 3rd embodiment of this invention. The side view which similarly showed the connection part of the trolley | bogie unit, and the structure of the periphery.

Next, embodiments of the invention will be described.
An overall configuration of a walking electric work machine 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the following description, the front-rear, left-right, up-down directions are defined with the arrow A direction in the figure as the front direction. Unless otherwise noted, each part will be described in the state in which the units of the electric work machine 1 are assembled, that is, the position and direction in the state where the electric work machine 1 is completed.

  The electric working machine 1 according to the first embodiment is a walking type management machine, and is a working machine capable of performing management work such as tillage work and upright work. The electric work machine 1 includes a body unit 2, a traveling unit 3, and a work unit (a tilling unit 4 in the first embodiment).

  The airframe unit 2 is a unit for performing various operations and operations by an operator and performing control such as supplying electric power to the traveling unit 3 and the tilling unit 4. The airframe unit 2 is mainly composed of a power supply / control unit 10 and an operation unit 20.

  Further, the power source / control unit 10 is mainly configured by a battery 11, a battery case 12, and a control device 13.

  The battery 11 is a secondary battery and can be charged and discharged. The electric power from the battery 11 can be supplied to various electric devices of the electric work machine 1 to be operated. The battery 11 is formed in a substantially box shape. A connection terminal is formed on one side surface (for example, the lower end surface), and the battery 11 is configured to be connectable to the connection terminal formed on the traveling unit 3 or the work unit. It can be supplied. A handle 11a that can be gripped by an operator is attached to the upper portion of the battery 11, and the handle 11a is grasped and removed from the battery case 12 during charging or the like so that it can be easily carried.

  The battery case 12 is a substantially box-shaped case that accommodates the battery 11, and is arranged such that its longitudinal direction is inclined to the front low and the rear high. The upper part of the battery case 12 is open, and serves as an insertion slot into which the battery 11 can be inserted while the operator holds the handle 11a. A connection terminal is formed in the battery case 12, and the connection terminal and the connection terminal of the battery 11 are configured to be connectable. However, the insertion opening of the battery case 12 is not limited to the upper part, and may be a side part.

  The battery case 12 accommodates a control device 13 (see FIG. 3), and is configured to appropriately supply power from the battery 11 as an energy source to each device by an operator's operation. However, the arrangement position of the control device 13 is not limited and may be arranged on the upper surface or the lower surface of the battery case 12. Further, the battery 11, the battery case 12, and the control device 13 can be configured integrally, or a connection terminal can be provided in the battery case 12 to connect to the traveling unit 3 or the work unit.

  Mounting holes (screw holes) 12a, 12a,... For allowing the traveling unit 3 to be attached to the battery case 12 are formed on the rear side of the battery case 12. Further, a first body side terminal 132a of the first control connector 132 that can be electrically connected to the battery 11 and the electric motor 31 for traveling of the traveling unit 3 is disposed at an appropriate position on the rear lower side surface of the battery case 12 (FIG. 3). ) Is provided. The first machine body side terminal 132 a of the first control connector 132 is connected to the control device 13 via the harness 131.

  Further, attachment holes (screw holes) 12b, 12b,... For making the tillage unit 4 attachable are formed on the front side surface of the battery case 12. Further, a second machine body side terminal 136 a of the second control connector 136 that can be electrically connected to the working electric motor 61 of the tillage unit 4 is provided at an appropriate position on the front upper surface of the battery case 12. The second machine body side terminal 136 a of the second control connector 136 is connected to the control device 13 via the harness 135.

  The operation unit 20 is used to operate various devices and to steer the electric work machine 1 and is attached so as to protrude from the rear upper part to the rear upper part of the power source / control unit 10. The operation unit 20 mainly includes a base side handle 21, an upper side handle 22, switch levers 25 a and 25 b, and an operation device 26.

  The base side handle 21 is a cylindrical member, and is arranged so that its front lower end is fixed to the upper rear part of the battery case 12 and its longitudinal direction is inclined to the front low and rear high.

  The upper handle 22 is a member formed in a loop shape in a plan view, and forms a portion that is held by an operator. The front end of the upper handle 22 is connected to the rear end of the base handle 21. More specifically, the upper handle 22 is supported by the base handle 21 via a rotation shaft 23 whose axis is the left-right direction (horizontal direction). The rotation shaft 23 is disposed at substantially the same height as or slightly above the power supply / control unit 10. With such a configuration, the upper handle 22 can be rotated with respect to the base handle 21 with the rotation shaft 23 as a fulcrum.

  A handle fixing lever 24 is provided on the right side of the rotating shaft 23. By rotating and loosening the handle fixing lever 24, the upper handle 22 can be rotated up and down to an arbitrary height, or can be rotated backward. Therefore, the upper handle 22 can easily insert the battery 11 into the battery case 12 without obstruction. Then, the upper handle 22 can be fixed at a desired rotation position by rotating the handle fixing lever 24 in the tightening direction.

  The rear portion of the upper handle 22 is formed with a grip portion 22a that is substantially horizontal in a side view, and switch levers 25a and 25b are disposed below the grip portion 22a. The front end portions of the switch levers 25a and 25b are supported by the middle portion of the upper handle 22 so as to be rotatable in the vertical direction. The switch levers 25a and 25b are electrically connected to the control device 13 in the battery case 12, and rotate the rear portions of the switch levers 25a and 25b upward. That is, when the operator holds the switch levers 25a and 25b together with the grip portion 22a, the various devices are driven. Here, of the left and right switch levers 25a and 25b, the left switch lever 25a is configured to drive various devices of the traveling unit 3, and the right switch lever 25b is configured to drive various devices of the tillage unit 4. It is also possible. Conversely, the left switch lever 25a can be configured to drive various devices of the tillage unit 4, and the right switch lever 25b can be configured to drive various devices of the traveling unit 3.

  The operating device 26 mainly includes a main power switch 121, a traveling unit operation unit 261, and a work unit operation unit 262. The operation device 26 is attached to the grip portion 22 a of the upper handle 22 and is electrically connected to the control device 13 in the battery case 12. The main power switch 121 is configured to supply or cut off electric power to various devices (the electric motor 31 for traveling and the electric motor 61 for work) by being “ON” or “OFF”. ing. The traveling unit operation unit 261 changes the number of rotations of the forward switch 261 a that normally rotates the traveling electric motor 31 in the traveling unit 3, the reverse switch 261 b that reversely rotates the traveling electric motor 31, and the traveling electric motor 31. And a speed change dial 261c that can change the traveling speed. The work unit operation unit 262 includes a work speed change dial 262 a that changes the rotation speed of the working shaft motor 81 by changing the rotation speed of the work electric motor 61.

Next, the traveling unit 3 will be described.
The traveling unit 3 supports the body unit 2 and enables the electric working machine 1 to travel. The traveling unit 3 is mainly composed of a traveling case 30, a traveling electric motor 31, a reduction gear 40, and a traveling device (axle 51 traveling wheels 52 and 52).

  The traveling case 30 is for accommodating the traveling electric motor 31 and the speed reduction device 40 and for supporting the airframe unit 2 by the traveling wheels 52 and 52. The traveling case 30 is attached to the rear side surface of the battery case 12 so that the longitudinal direction is the front-rear direction and the front case becomes higher and lower. A flange portion 30a is formed on the upper portion of the traveling case 30 so as to be fixed to the battery case 12, and the flange portion 30a is fitted to the mounting holes 12a formed on the side surface of the battery case 12. The mounting holes 30b are opened. Further, the first traveling side terminal 132b (convex) of the first control connector 132 is provided so that the traveling unit 3 can be electrically connected to the first body side terminal 132a of the first control connector 132 with the traveling unit 3 attached to the body unit 2. Shape) is arranged.

  Furthermore, a traveling electric motor 31 is disposed in the upper part of the traveling case 30. The traveling electric motor 31 is connected to the first traveling side terminal 132 b of the first control connector 132 via the harness 133. A traveling electric motor output shaft 32 projects downward from the lower portion of the traveling electric motor 31.

  Furthermore, the speed reduction device 40 transmits power by decelerating from the traveling electric motor output shaft 32 to the axle 51. The speed reduction device 40 includes a travel drive shaft 41 disposed on a coaxial extension of the travel electric motor output shaft 32 and a worm gear mechanism 43 that transmits power from a lower portion of the travel drive shaft 41 to the horizontal axle 51.

  The worm gear mechanism 43 includes a worm 43 a attached to the lower end portion of the travel drive shaft 41 and a worm wheel 43 b splined to the left and right center of the axle 51. However, the speed reduction mechanism of the speed reduction device 40 is not limited to the worm gear mechanism 43, and may be a planetary gear mechanism, a spur gear mechanism, a bevel gear mechanism, or the like, or a combination of these mechanisms including the worm gear mechanism. It may be and is not limited.

  On the other hand, an axle 51 that penetrates the traveling case 30 in the left-right direction is rotatably supported by the traveling case 30 at the lower end portion of the traveling case 30. Wheels 52 and 52 are fixed to the left and right ends of the axle 51, respectively.

  With this configuration, the traveling electric motor 31 is rotationally driven by the electric power supplied from the battery 11 in a state where the entire traveling unit 3 is fixed to the airframe unit 2. This rotational drive is transmitted to the travel drive shaft 41 via the travel electric motor output shaft 32 and rotates the worm 43 a at the lower end of the travel drive shaft 41. When the worm 43a rotates, the worm wheel 43b fitted to the worm 43a is decelerated while changing the rotation direction of the worm 43a to rotate the axle 51. As the axle 51 rotates, the left and right traveling wheels 52 and 52 rotate, and the entire electric work machine 1 can travel while being supported by the traveling wheels 52 and 52.

  Then, by operating the forward switch 261a or the reverse switch 261b of the airframe unit 2, the traveling wheels 52 and 52 are rotated forward or backward, and the electric work machine 1 moves forward or reverse.

  The traveling unit 3 is configured to be detachable from the body unit 2. That is, the first machine side terminal 132a of the first control connector 132 formed on the battery case 12 of the machine unit 2 and the first travel side terminal 132b of the first control connector 132 of the travel unit 3 are connected. Further, with the mounting holes 12a of the battery case 12 of the airframe unit 2 and the mounting holes 30b of the traveling case 30 being combined, the battery case 12 and the traveling case 30 are connected by bolts nuts 88, etc. By fixing, the entire traveling unit 3 can be easily attached to the airframe unit 2. Further, by loosening the bolts and nuts 88, etc., and separating the connected first control connector 132 into the first airframe side terminal 132a and the first travel side terminal 132b, the entire travel unit 3 is the airframe unit. 2 can be easily removed.

Next, the tillage unit 4 will be described.
The tillage unit 4 is attached to the front of the airframe unit 2 and is used for tilling the field. The tillage unit 4 is mainly composed of a work electric motor 61, a tilling speed reduction device 70, a tilling case 60, a working device (a tilling shaft 81, a tilling claw 82...), A tilling cover 83, and the like.

  The tilling case 60 is a case that houses the working electric motor 61 and the tilling speed reducing device 70. The tilling case 60 is attached to the front side surface of the battery case 12 so that the longitudinal direction thereof becomes front low and high. A flange portion 60a is formed on an upper portion of the rear side surface of the tilling case 60 so as to be attached to a lower portion of the front side surface of the battery case 12, and a mounting hole 12b formed on the front side surface of the battery case 12 in the flange portion 60a. The mounting hole 60b is opened so as to match. In addition, the second work side terminal 136b of the second control connector 136 is arranged so that it can be electrically connected to the second body side terminal 136a of the second control connector 136 with the tillage unit 4 attached to the body unit 2. Is done.

  Furthermore, a working electric motor 61 is disposed in the upper part of the tilling case 60. The work electric motor 61 is connected to the second work side terminal 136 b of the second control connector 136 via the harness 137. The work electric motor 61 is supported by a support member (not shown) so as not to move in the tilling case 60. An upper end portion of the tillage motor output shaft 62 is fixed to the lower portion of the working electric motor 61.

  Further, the tillage reduction device 70 is a device connected to the tillage motor output shaft 62 and is disposed on an extension of the tillage motor output shaft 62 in the axial direction. The tilling speed reducing device 70 includes a tilling drive shaft 71 disposed coaxially with the tilling motor output shaft 62 and a worm gear mechanism 73 that transmits power from the lower portion of the tilling drive shaft 71 to the horizontal tilling shaft 81.

  The worm gear mechanism 73 includes a worm 73 a attached to the lower end portion of the tillage motor output shaft 62 and a worm wheel 73 b splined to the tillage shaft 81. However, the speed reduction mechanism of the tillage reduction device 70 is not limited to the worm gear mechanism 73, and may be a planetary gear mechanism, a spur gear mechanism, a bevel gear mechanism, or the like, or a combination of these mechanisms including the worm gear mechanism. It may be and is not limited.

  On the other hand, a tilling shaft 81 penetrating the tilling case 60 in the left-right direction is rotatably supported by the tilling case 60 at the lower end of the tilling case 60. On the tilling shaft 81 protruding from the tilling case 60, a plurality of tilling claws 82 for performing the tilling work are attached. Further, the upper side of the tilling claws 82 is covered with a tilling cover 83 and fixed to a part of the tilling case 60. The tillage cover 83 is a cover mainly for the purpose of preventing sediment scattering.

  With this configuration, the working electric motor 61 is rotationally driven by the electric power supplied from the battery 11 in a state where the entire tillage unit 4 is fixed to the body unit 2. This rotational drive is transmitted to the tillage drive shaft 71 via the tillage motor output shaft 62 and rotates the worm 73a at the lower end of the tillage drive shaft 71. When the worm 73a rotates, the worm wheel 73b fitted to the worm 73a decelerates and rotates the tillage shaft 81 while changing the rotation direction of the worm 73a. When the tilling shaft 81 rotates, the left and right tilling claws 82... Rotate, and the field can be plowed.

  In the electric working machine 1 configured as described above, the traveling speed of the traveling device (the axle 51 and the traveling wheels 52 and 52) of the traveling unit 3 is changed to an appropriate speed by the speed change dial 261c attached to the body unit 2. can do.

  Further, the tillage unit 4 is configured to be attachable to and detachable from the body unit 2. That is, the second machine side terminal 136a of the second control connector 136 formed on the battery case 12 of the machine unit 2 and the second work side terminal 136b of the second control connector 136 of the tillage unit 4 are connected. Further, with the mounting holes 12b of the battery case 12 of the fuselage unit 2 and the mounting holes 60b of the tillage case 60 being combined, the battery case 12 and the tilling case 60 are bolted nuts 88, etc. As a result, the entire tillage unit 4 can be easily fixed to the airframe unit 2. In addition, by loosening the bolts and nuts 88, etc., and separating the second machine-side terminal 136a and the second work-side terminal 136b of the connected second control connector 136, the entire tillage unit 4 is separated from the machine unit 2. It can be easily removed.

  Then, when cleaning (washing) the tilling claws 82 and the like to which the soil in the field is attached after the tilling work, the tilling unit 4 is detached from the airframe unit 2 so that only the tilling unit 4 is present, and then the tilling claws 82 etc. Can be washed. Therefore, since the electric working machine 1 can be disassembled and cleaned for each unit, cleaning can be performed more easily than washing the entire electric working machine 1.

  In addition, when cleaning is performed, each unit of the present embodiment has the battery 11 mounted on the airframe unit 2 side. Since the traveling unit 3 and the tilling unit 4 that are not equipped with the battery 11 are not mounted and there is no fear of a short circuit, washing with water becomes easy.

  By replacing the tillage unit 4 that is a work unit in the electric work machine 1 of the first embodiment with a unit for another use, the electric work machine is used for various work uses. In other words, the electric working machine 100 of the second embodiment shown in FIG. 4 is different from the machine unit 2 to which the traveling unit 3 of the first embodiment shown in FIG. Composed by installing.

  Here, the cart unit 400 is a box-shaped mounting portion 401 having an open upper portion on which luggage or the like can be mounted, and a mounting portion with a predetermined interval in the front-rear direction below the mounting portion 401. A traveling wheel portion 402 having an axle 402a rotatably supported by 401 and having traveling wheels 402b... Disposed at both left and right ends of the axle 402a, and a connecting portion 403 attached to the rear side surface of the carriage unit 400. It is comprised by.

  The connecting portion 403 includes a cart side connecting portion 431 and an airframe side connecting portion 432.

  The cart-side connecting portion 431 includes a connecting arm 311 that protrudes from the rear side surface of the mounting portion 401, and a ring-shaped connecting ring 312 that is attached to the rear end of the connecting arm 311 and opens in the vertical direction. .

  As shown in FIG. 5, the fuselage-side connecting portion 432 includes a cylindrical member 321 having an upper portion slightly smaller than the inner diameter of the connecting ring 312 and a lower portion that is about the outer diameter of the connecting ring 312, and a lower end of the cylindrical member 321. And a mounting plate 322 provided with a plurality of mounting holes 322a. The attachment plate 322 is arranged so that the placement portion 401 is in an appropriate position when attached to the airframe unit 2. That is, it is attached to the lower end of the cylindrical member 321 so as to be substantially horizontal to the front surface of the battery case 12 of the machine unit 2. The mounting holes 322a of the mounting plate 322 are provided at positions corresponding to the mounting holes 12b of the battery unit 12 of the machine unit 2.

  Next, a method for attaching the cart unit 400 to the airframe unit 2 will be described.

  First, the fuselage side connecting portion 432 is attached to the front surface of the battery case 12 of the fuselage unit 2. At this time, the mounting plate 322 and the battery case 12 are fixed by the bolts and nuts 88 with the mounting holes 322a of the mounting plate 322 aligned with the mounting holes 12b of the battery case 12. And the truck side connection part 431 and the machine body side connection part 432 are connected by the fitting ring 312 of the truck side connection part 431 being fitted on the upper part of the columnar member 321 of the machine body side connection part 432. In the connected connecting portions 431 and 432, the connecting ring 312 and the connecting arm 311 can be rotated in the left-right direction around the axial direction (vertical direction) of the cylindrical member 321. That is, both the mounting portion 401 and the traveling wheel portion 402 connected to the connection arm 311 can rotate together with the connection ring 312 and the connection arm 311.

  Further, the work unit is not limited to the tillage unit 4 or the cart unit 400 shown in the first embodiment to the second embodiment but includes a work device such as a mower device or an axle tillage type tillage device. There may be.

  Next, a method of attaching each unit different from the electric working machine 100 according to the second embodiment will be described in the third embodiment. In addition, description is abbreviate | omitted about the same member and structure as 1st embodiment and 2nd embodiment.

  In the electric working machines 1 and 100 according to the first embodiment and the second embodiment, each unit (traveling unit 3, tilling unit 4, cart unit 400) with respect to the airframe unit 2 has mounting holes 12b formed in each unit. -Each unit is attached to the airframe unit 2 by fastening bolt nut 88 ... to 30b * 322b.

  In the electric working machine 300 according to the third embodiment shown in FIGS. 6 and 7, the mounting holes 12a and 12b formed in the machine unit 2 according to the second embodiment are not provided, and instead, one-touch latching is performed. A hooked portion 89 a of a tool (so-called patchon lock) 89 is attached. The one-touch latch 89 includes a hook-shaped latching portion 89a and a latching portion 89b that hooks a part of the latching portion 89a and holds the state.

  The latching portion 89b is attached to a mounting plate 323 (corresponding to the mounting plate 322 of the second embodiment) of the carriage unit 400 at a position where it can be latched to the latched portion 89a on the front side surface of the battery case 212. Yes.

  Similarly, the traveling case 230 (corresponding to the traveling case 30 of the first embodiment and the second embodiment) has the latching portions 89b to correspond to the latched portions 89a on the rear side surface of the battery case 212, respectively. Installed.

  By comprising in this way, compared with the method of fixing each unit with the bolt nut 88 ... of 1st embodiment and 2nd embodiment, each unit is carried out with the one-touch latch 89 shown in 3rd embodiment. It is easier to fix.

  In the electric working machines 1, 100, and 300 according to the embodiments, the working unit (cultivation unit 4, cart unit 400) is provided in front of the electric working machines 1, 100, and 300, and the electric working machines 1, 100, and 300 are Although the traveling unit 3 is arranged at the rear, it is not limited. That is, the traveling unit 3 may be disposed in front of the machine unit 2, and the work unit (cultivation unit 4 / cart unit 400) may be disposed behind. Alternatively, the airframe unit may be arranged at the uppermost position, and one of the work unit or the traveling unit may be disposed below the airframe unit, and the other of the work unit or the traveling unit may be disposed behind the airframe unit. Even in the above case, each unit can be attached by forming a mounting hole in each unit and fixing it with a bolt and nut, or by attaching it with a one-touch latch.

  Each unit (airframe unit 2, traveling unit 3, work unit (cultivation unit 4, cart unit 400)) in the first to third embodiments is configured to be detachable from other units. The airframe unit 2 and the traveling unit may be integrally configured, or the airframe unit 2 may be integrally configured with the carriage unit 400.

  In the first embodiment to the third embodiment, the traveling electric motor 31 is configured such that the traveling electric motor output shaft 32 is orthogonal to the axle 51 and the tilling motor output shaft 62 is orthogonal to the tilling shaft 81. A working electric motor 61 is also arranged. However, the traveling electric motor and the working electric motor may be placed horizontally, that is, arranged parallel to the axle 51 and the tilling shaft 81. Further, the traveling electric motor may be disposed in the axle, and the working electric motor may be disposed in the tilling shaft.

  In addition, when each motor is configured horizontally, the speed reducer corresponding to the motor can be configured by a gear, a sprocket, or the like.

  As described above, the electric working machine 1 according to the present embodiment is an electric working machine that is driven by electric power from the battery 11 and drives the working device (cultivation shaft 81, tilling claw 82...) And the working device. A traveling unit 3 having a working unit (cultivation unit 4) having a working electric motor 61, a traveling device (axle 51, traveling wheels 52, 52), and a traveling electric motor 31 for driving the traveling device; The vehicle body unit 2 having the control device 13 that controls the power supply to the electric motor 61 for traveling and the electric motor 31 for traveling, and the operation unit 20 is provided.

  With this configuration, the work unit (cultivation unit 4) and the travel unit 3 have separate electric motors (travel electric motor 31, work electric motor 61), so that the work device (cultivation shaft 81, The tilling claws 82 ...) and the traveling wheels (axle 51, traveling wheels 52, 52) can be individually controlled. That is, when one of the working device and the traveling device is used, it is not necessary to drive the electric motor for the other unused one, which leads to power saving. Further, it is not necessary to move gears or the like when shifting, and the driving of the electric motors 31 and 61 can be stopped for each unit. Since the drive of the work device (cultivation shaft 81 tillage claw 82) of the work unit (cultivation unit 4) can be easily stopped, it is possible to safely move backward or without work.

  In the electric working machine 1 of the present embodiment, the work unit (plowing unit 4) and the traveling unit 3 have speed reducers 40 and 70, respectively.

  By configuring in this way, the work unit (cultivation unit 4) and the traveling unit 3 have separate reduction gears 40 and 70, respectively, so that each electric motor (the working electric motor 61, the traveling electric motor 31). Therefore, it is possible to obtain a reduction gear having a strength corresponding to the output of this, leading to cost reduction.

  In the electric working machine 1 of the present embodiment, the work unit (cultivation unit 4) and the traveling unit 3 are configured to be detachable from the machine unit 2.

  With this configuration, when the work unit (cultivation unit 4) is unnecessary, or when the traveling unit 3 is unnecessary, it can be attached and detached as necessary for work, so the entire electric work machine is unnecessary. It is possible to reduce the weight of the unit, and to reduce the weight load, leading to power saving. By making each unit detachable, the work unit can be removed and each component can be easily cleaned (maintenance). By preparing a plurality of work units having different work, different work can be performed with one machine unit, and versatility is improved.

DESCRIPTION OF SYMBOLS 1 Electric working machine 2 Airframe unit 3 Traveling unit 4 Tillage unit 11 Battery 13 Control apparatus 20 Operation part 31 Electric motor for traveling 40 Reduction gear 51 Axle (part of traveling apparatus)
52 Traveling wheel (part of traveling device)
61 Electric motor for work 70 Deceleration device 81 Tillage shaft (part of work device)
82 Tillage claw (part of work equipment)

Claims (3)

An electric working machine driven by electric power from a battery,
A work unit having a work device and a work electric motor for driving the work device;
A traveling unit having a traveling device and an electric motor for traveling that drives the traveling device;
A fuselage unit having a control device for controlling power supply to the working electric motor and the traveling electric motor, and an operation unit;
An electric working machine comprising: The electric working machine according to claim 1,
The working unit and the traveling unit each have a speed reducer. The electric working machine according to claim 1 or 2,
The working unit and the traveling unit are configured to be detachable from the airframe unit, respectively.

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