Riding electric work machine with swing arm traction
A riding-type electric work machine including a vehicle body frame, an electrically driven operating unit, a swing arm swingably supported by the vehicle body frame, a traction motor held by the swing arm, a battery and a suspension coupled to the swing arm. The swing arm includes a housing base enclosing the traction motor and an arm connecting the housing base to the swing shaft.
1 . A riding-type electric work machine comprising:
a vehicle body frame;
an electrically driven operating unit supported by the vehicle body frame;
a swing arm pivotably supported by the vehicle body frame through a swing shaft;
a traction motor held by the swing arm;
a battery supported by the vehicle body frame and configured to supply electric power to the traction motor and the operating unit; and
a suspension coupled to the swing arm and the vehicle body frame, wherein
the swing arm comprises: a mounting base for connecting to the traction motor; and a first arm connecting the mounting base to the swing shaft,
wherein vehicle body frame includes an arm connector tab protruding downward from a bottom face of the vehicle body frame,
the swing shaft of the swing arm is pivotably connected to the arm connector tab,
the riding-type electric work machine further comprises a travel control unit configured to control the traction motor,
wherein the swing arm comprises a right swing arm and a left swing arm disposed respectively on right and left of the vehicle body frame, and
at least a part of the travel control unit is interposed between the right swing arm and the left swing arm,
the arm connector tab comprises a right arm connector tab and a left arm connector tab disposed respectively on right and left of the vehicle body frame,
at least a part of the travel control unit is interposed between the right arm connector tab and the left arm connector tab such that the travel control unit is covered by the right arm connector tab and the right swing arm in a right-side view of the riding-type electric work machine.
2 . The riding-type electric work machine according to claim 1 , wherein
the swing shaft and the mounting base are disposed at different positions along a vehicular longitudinal direction of the riding-type electric work machine,
the first arm extends from the swing shaft toward the mounting base, and
the battery protrudes downward from the vehicle body frame, at least a part of the battery being interposed between the right swing arm and the left swing arm.
3 . The riding-type electric work machine according to claim 1 , further comprising:
a speed reducer disposed outward of the traction motor in a vehicular width direction and coupled to the traction motor; and
a drive wheel provided to the speed reducer,
wherein at least a part of a unit composed of the speed reducer and the traction motor is disposed inside the drive wheel.
4 . The riding-type electric work machine according to claim 1 , wherein
the mounting base has a cylindrical shape,
the first arm slants outward in the vehicular width direction as the first arm approaches a rear of the riding-type electric work machine.
5 . The riding-type electric work machine according to claim 1 , wherein the operating unit is disposed at a front of the swing shaft in the vehicular longitudinal direction.
6 . The riding-type electric work machine according to claim 1 , further comprising:
a drive motor configured to drive the operating unit; and
an operating unit controller configured to control the drive motor,
wherein the operating unit controller is disposed above the travel control unit in a vehicular height direction.
7 . The riding-type electric work machine according to claim 1 , further comprising:
an autonomous control unit configured to autonomously control the traction motor and the operating unit.
8 . The riding-type electric work machine according to claim 1 , wherein
a frame side connector by which the suspension is connected to the vehicle body frame overlaps the battery in a side view of the riding-type electric work machine.
9 . The riding-type electric work machine according to claim 1 , wherein
the swing shaft is disposed on a front end of the first arm, and
the swing arm comprises a mounting base side connector by which the suspension is connected to the mounting base.
10 . The riding-type electric work machine according to claim 4 , wherein the first arm slants outward in the vehicular width direction such that the mounting base is located on outside of the vehicle body frame in the vehicular width direction in a plan view of the riding-type electric work machine.
11 . The riding-type electric work machine according to claim 2 , wherein the at least a part of the battery is interposed between the right swing arm and the left swing arm in a vehicular width direction.
12 . The riding-type electric work machine according to claim 2 , wherein the vehicle body frame includes a right frame extended along the vehicular longitudinal direction and a left frame extended along the vehicular longitudinal direction, and
the battery is interposed between the right frame and the left frame in a vehicular width direction.
13 . The riding-type electric work machine according to claim 1 , wherein the at least a part of the travel control unit is interposed between the right swing arm and the left swing arm in a vehicular width direction.
14 . The riding-type electric work machine according to claim 6 , wherein the operating unit controller is disposed above the travel control unit to cover the travel control unit.
15 . A riding-type electric work machine comprising:
a vehicle body frame;
an electrically driven operating unit supported by the vehicle body frame;
a swing arm pivotably supported by the vehicle body frame through a swing shaft,
wherein vehicle body frame includes an arm connector tab protruding downward from a bottom face of the vehicle body frame,
the swing shaft of the swing arm is pivotably connected to the arm connector tab,
the swing arm comprising a right swing arm and a left swing arm disposed respectively on right and left sides of the vehicle body frame;
a battery supported by the vehicle body frame and configured to supply electric power to the operating unit; and
a suspension coupled to the swing arm and the vehicle body frame; wherein
the battery protrudes downward from the vehicle body frame, and at least a part of the battery is interposed between the right swing arm and the left swing arm,
wherein the riding-type electric work machine further comprises a travel control unit disposed in front of the battery,
at least a part of the travel control unit is interposed between the right swing arm and the left swing arm,
the arm connector tab comprises a right arm connector tab and a left arm connector tab disposed respectively on right and left of the vehicle body frame,
at least a part of the travel control unit is interposed between the right arm connector tab and the left arm connector tab such that the travel control unit is covered by the right arm connector tab and the right swing arm in a right side view of the riding-type electric work machine.
16 . The riding-type electric work machine according to claim 15 , further comprising:
an autonomous control unit configured to autonomously control the traction motor and the operating unit.
17 . The riding-type electric work machine according to claim 15 , further comprising:
a traction motor held by the swing arm; and
wherein the travel control unit is configured to control the traction motor.
18 . The riding-type electric work machine according to claim 17 , further comprising:
a drive motor configured to drive the operating unit; and
an operating unit controller configured to control the drive motor;
wherein the operating unit controller is disposed above the travel control unit in a vehicular height direction.
19 . The riding-type electric work machine according to claim 18 , further comprising:
an autonomous control unit configured to autonomously control the traction motor and the operating unit.
20 . A riding-type electric work machine comprising:
a vehicle body frame;
an operating unit supported by the vehicle body frame;
a swing arm pivotably supported by the vehicle body frame through a swing shaft;
a traction motor held by the swing arm;
a battery supported by the vehicle body frame and configured to supply electric power to the traction motor; and
a drive wheel;
wherein the swing arm comprises a mounting base for mounting the traction motor, and a speed reducer is disposed outward of the traction motor in a vehicular width direction and coupled to the traction motor; and at least a part of a unit composed of the speed reducer and the traction motor is disposed inside the drive wheel,
wherein vehicle body frame includes an arm connector tab protruding downward from a bottom face of the vehicle body frame,
the swing shaft of the swing arm is pivotably connected to the arm connector tab,
the riding-type electric work machine further comprises a travel control unit configured to control the traction motor,
wherein the swing arm comprises a right swing arm and a left swing arm disposed respectively on right and left of the vehicle body frame, and
at least a part of the travel control unit is interposed between the right swing arm and the left swing arm,
the arm connector tab comprises a right arm connector tab and a left arm connector tab disposed respectively on right and left of the vehicle body frame,
at least a part of the travel control unit is interposed between the right arm connector tab and the left arm connector tab such that the travel control unit is covered by the right arm connector tab and the right swing arm in a right side view of the riding-type electric work machine.
21 . The riding-type electric work machine according to claim 18 , wherein
at least a part of the battery is interposed between the right swing arm and the left swing arm.
22 . The riding-type electric work machine according to claim 21 , further comprising:
an autonomous control unit configured to autonomously control the traction motor and the operating unit.