Title:
WORK DEVICE AND WORK MACHINE EQUIPPED WITH THE WORK DEVICE
Document Type and Number:
Japanese Patent JP2020178650
Kind Code:
A
Abstract:
To provide a work device capable of appropriately processing (consuming) regenerative power generated in an electric motor even when a variation in actual required power (actual load) of the electric motor is large.SOLUTION: A work device connected to a travelling vehicle equipped with a prime mover for executing agricultural work includes: a work part for executing agricultural work by the rotation of a rotary body; an electric motor driven by electric power; a power transmission mechanism to which power generated by the driving of the electric motor, and power from the prime mover are input, and which transmits the input power to the work part; a regenerative resistor for consuming regenerative power generated in the electric motor; a switching part for switching a state between a connection state and a cut-off state between the electric motor and the regenerative resistor; and a control part for controlling the switching operation of the switching part. The control part brings the switching part into a cut-off state when actual required power of the electric motor is a positive value exceeding 0 W, and is equal to or larger than a first threshold set based on an amplitude of actual required power determined by the number of rotations of the rotary body.SELECTED DRAWING: Figure 25
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Inventors:
YAMANAKA YUKIFUMI
Application Number:
JP2019085476A
Publication Date:
November 05, 2020
Filing Date:
April 26, 2019
Export Citation:
Assignee:
KUBOTA KK
International Classes:
A01C19/02; A01B71/02; H02M7/48; H02P3/18
Domestic Patent References:
| JP6214806B1 | 2017-10-18 | |||
| JP2010106513A | 2010-05-13 | |||
| JP2010183714A | 2010-08-19 |
Attorney, Agent or Firm:
Mikio Yasuda