Swing control system for construction machines
US-2015361641-A1 · Dec 17, 2015 · US
Slewing-type working machine
US9366010B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9366010-B2 |
| Application number | US-201314406651-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 21, 2013 |
| Priority date | Jun 26, 2012 |
| Publication date | Jun 14, 2016 |
| Grant date | Jun 14, 2016 |
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Abstract
Official abstract text for this publication.
In a working machine having an upper slewing body rotated by a slewing electric motor, a controller outputs a command for switching a communication valve, and a command for specifying a torque of the slewing electric motor. The controller includes an abnormal-switching detection section which detects occurrence of abnormal switching in the communication valve, wherein the controller (i) determines, as a target value, a pressure which would be generated in the hydraulic motor if the communication valve was absent, or a torque determined based on the pressure, based on an operation state of a slewing operation device and a slewing state of the upper slewing body; (ii) determines, as an actual value, a pressure actually generated in the hydraulic motor or a torque determined based on the pressure; and (iii) outputs the torque command on the basis of a value obtained by subtracting the actual value from the target value.
First claim
Opening claim text (preview).
The invention claimed is: 1. A slewing-type working machine comprising: a lower travel body; an upper slewing body mounted on the lower travel body so as to be able to be slewed; a hydraulic motor which is a drive source for slewing the upper slewing body; a slewing electric motor connected to an output shaft of the hydraulic motor to generate regenerative power by utilization of the slewing of the upper slewing body; a hydraulic pump which is a supply source for supplying…
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Mechanical Engineering · mapped topic
Fixed Constructions · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9366010B2 cover?
- In a working machine having an upper slewing body rotated by a slewing electric motor, a controller outputs a command for switching a communication valve, and a command for specifying a torque of the slewing electric motor. The controller includes an abnormal-switching detection section which detects occurrence of abnormal switching in the communication valve, wherein the controller (i) determi…
- Who is the assignee on this patent?
- Kobelco Constr Mach Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification E02F9/123. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Jun 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).