公开(公告)号：US09796564B2

公开(公告)日：2017-10-24

申请号：US15055721

申请日：2016-02-29

Applicant: Kobe Steel, Ltd. ,  KOBELCO CRANES CO., LTD.

Inventor： Hiroaki Kawai ,  Takashi Hiekata ,  Koji Inoue ,  Shintaro Sasai ,  Toshiro Yamashita ,  Koichi Shimomura ,  Tetsuya Ogawa

IPC: B66C13/16 ,  B66C13/50 ,  B66C13/22 ,  B66C15/00 ,  B66C23/90

CPC classification number: B66C13/50 ,  B66C13/22 ,  B66C15/00 ,  B66C23/905

Abstract: A crane includes an overload safety device and a identifying unit. The overload safety device includes a maximum-load calculating unit configured to calculate a maximum load that a winch drum is capable of winding up with driving torques output from the remaining electric motors other than a failed electric motor identified by the identifying unit, an updating unit configured to update a set hoisting ability value stored in a storing unit to a value equal to the maximum load, and a control unit configured to cause the remaining electric motors to operate when a value of a load derived by a load deriving unit is equal to or smaller than a latest set hoisting ability value stored in the storing unit and stop the operation of the plurality of electric motors when the value of the load derived by the load deriving unit exceeds the latest set hoisting ability value.

公开(公告)号：US09759146B2

公开(公告)日：2017-09-12

申请号：US14894018

申请日：2014-05-27

Applicant: KOBELCO CRANES CO., LTD.

Inventor： Toshiki Tsurumi ,  Shintaro Sasai ,  Koichi Shimomura ,  Takahiro Hanamoto ,  Hitoshi Sakurai

IPC: F01N3/00 ,  F02D41/02 ,  F02D9/06 ,  B60K13/04 ,  B66C13/00 ,  F01N3/023 ,  F01N3/025 ,  F01N3/035 ,  F01N9/00 ,  F02D41/40

CPC classification number: F02D41/029 ,  B60K13/04 ,  B66C13/00 ,  F01N3/023 ,  F01N3/0235 ,  F01N3/0253 ,  F01N3/035 ,  F01N9/002 ,  F01N2900/10 ,  F01N2900/1606 ,  F02D9/06 ,  F02D41/021 ,  F02D41/405 ,  F02D2041/026 ,  F02D2200/604 ,  Y02T10/47

Abstract: An exhaust gas purification control device includes an engine, an actuator using the engine as a driving source, an operation unit used by an operator to operate the actuator or the engine, an operation detector detecting whether or not the operation unit is being operated, a purification device for capturing soot in exhaust gas of the engine, an accumulation amount detector detecting an accumulation amount of the soot captured by the purification device, a regeneration unit for performing an regenerating operation of regenerating the purification device by burning the soot captured by the purification device, and a controller controlling the regenerating operation. The controller switches a control from a control of prioritizing an operation by the operation unit to a control of prioritizing the regenerating operation in a stepwise manner as the accumulation amount of the soot detected by the accumulation amount detector increases.

公开(公告)号：US10315896B2

公开(公告)日：2019-06-11

申请号：US15327904

申请日：2015-07-10

Applicant: Kobe Steel, Ltd. ,  KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Hiroaki Kawai ,  Takashi Hiekata ,  Shintaro Sasai ,  Naoto Hori ,  Toshiro Yamashita ,  Koichi Shimomura

IPC: B66D5/18 ,  B60T8/17 ,  B66C13/28 ,  B66D5/30 ,  B66D1/48 ,  B66C13/46

Abstract: An electric winch device includes a required braking force estimation section which estimates a required braking force required to stop a free-falling object at a position at an allowable stopping height; a braking force determination section which determines, out of an operational braking force, each of a first braking force to be borne by a braking device and a second braking force to be borne by a braking force which is generated in an electric motor due to consumption of regenerative power; and a control section which causes the braking device to apply the first braking force to a winch drum. The braking force determination section determines the first braking force to be a braking force equal to or greater than the required braking force when, at a time of stopping of the free-falling object, the operational braking force is equal to or greater than the required braking force.

公开(公告)号：US10196247B2

公开(公告)日：2019-02-05

申请号：US15037604

申请日：2014-11-06

Applicant: Kobe Steel, Ltd. ,  KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Takashi Hiekata ,  Hiroaki Kawai ,  Toshiro Yamashita ,  Shintaro Sasai ,  Naoto Hori ,  Koichi Shimomura

IPC: B66D1/12 ,  B66D5/30 ,  B66D1/46 ,  B66C13/28

Abstract: Provided is an electric winch device including: an electric motor; a winch drum; a brake; an operation lever; and a controller. The controller includes: a first torque derivation unit which derives a value of a first torque applied to the winch drum due to a load of an object; a second torque derivation unit which derives a value of a second torque generated in the winch drum by a drive torque of the electric motor; and a brake control unit which determines a timing for releasing a braking action on the winch drum after the operation lever has been operated, on the basis of a differential between the second torque value and the first torque value, and which causes the brake to release the braking action on the winch drum by transmitting, to the brake, a control signal instructing release of the braking action on the winch drum at the determined timing.

公开(公告)号：US10150655B2

公开(公告)日：2018-12-11

申请号：US15304736

申请日：2015-04-07

Applicant: Kobe Steel, Ltd. ,  KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Takashi Hiekata ,  Hiroaki Kawai ,  Toshiro Yamashita ,  Shintaro Sasai ,  Naoto Hori ,  Koichi Shimomura

IPC: B66D1/46 ,  B66C13/28 ,  B66C13/12 ,  B66D1/12 ,  B66D1/24 ,  B66D1/48 ,  B66D5/02

Abstract: An electric winch device including an electric motor that rotates a winch drum in a hoisting direction, and generates regenerative electric power when a rotation of the winch drum in a lowering direction is transmitted to the electric motor, a transmission device that transmits the rotation between the electric motor and the winch drum, a power calculating section that calculates power of the target object by freefall, and a control section that controls an operation of the transmission device. When the power calculated by the power calculating section exceeds reference electric power, the control section causes the transmission device to change the transmission rate of the rotation to a transmission rate at which the regenerative electric power generated by the electric motor is equal to or smaller than the reference electric power.