Shovel

Patent metadata

Field	Value
Publication number	US-11261581-B2
Application number	US-201715705381-A
Country	US
Kind code	B2
Filing date	Sep 15, 2017
Priority date	Mar 20, 2015
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A shovel enabled to set an engine revolution speed to revolution speeds including a revolution speed for a running operation and a revolution speed for an idling running operation that is lower than the revolution speed for the running operation includes an engine provided as a driving source of the shovel, an operating part configured to be driven by a driving force of the engine, an operation component configured to operate the operating part, a detecting device configured to detect a position of a movable portion of an operator and a position of the operation component, an operation determining part configured to determine a positional relationship between the movable portion and the operation component, and a control part configured to set the engine revolution speed of the engine based on the positional relationship between the movable portion and the operation component that is determined by the operation determining part.

First claim

What is claimed is:

1. A shovel enabled to set an engine revolution speed to a plurality of revolution speeds, the plurality of revolution speeds including:
a revolution speed for a running operation, and a revolution speed for an idling running operation that is lower than the revolution speed for the running operation, the shovel comprising:
a cabin;
an engine provided as a driving source of the shovel;
an operating part configured to be driven by a driving force of the engine;
an operation component configured to operate the operating part;
a detecting device installed at a first position inside the cabin so as to detect a second position of a movable portion of an operator and a third position of the operation component, the first position of the detecting device being apart from the third position of the operation component;
an operation determining part configured to determine a positional relationship between the second position of the movable portion of the operator and the third position of the operation component, the positional relationship being determined during the movable portion of the operator is out of contact with the operation component; and
a control part configured to set the engine revolution speed of the engine based on the determined positional relationship in which the movable portion of the operator is out of contact with the operation component, wherein the engine is kept revolving even when the positional relationship between the second position and the third position is changed.

2. The shovel according to claim 1 ,
wherein when the operation determining part determines that the movable portion of the operator is in the second position contacting the operation component, the control part continuously sets the engine revolution speed to the revolution speed for the running operation.

3. The shovel according to claim 1 ,
wherein when the operation determining part determines that the movable portion of the operator is moving toward the operation component in a state where the engine revolution speed is set to the revolution speed for the idling running operation, the control part sets the engine revolution speed to the revolution speed for the running operation.

4. The shovel according to claim 1 ,
wherein when the operation determining part determines that the movable portion of the operator does not touch the operation component, the control part sets the engine revolution speed to the revolution speed for the idling running operation.

5. The shovel according to claim 1 ,
wherein the operation component is an operation lever operable by a hand of the operator.

6. The shovel according to claim 1 ,
wherein the operation component is an operation pedal operable by a foot of the operator.

7. The shovel according to claim 1 ,
wherein the detecting device is an image capturing device configured to capture an image of the operation component and a vicinity of the operation component, and
wherein the operation determining part determines whether the operation component is operated using the captured image captured by the image capturing device.

Assignees

• Sumitomo S H L Construction Machinery Co Ltd
• Sumitomo Shi Constr Mach Co

Inventors

• Misaki Youji

Classifications

• F02D2200/604

  Engine control mode selected by driver, e.g. to manually start particle filter regeneration or to select driving style · CPC title

• F02D2200/602

  Pedal position · CPC title

• F02D41/08

  for idling (F02D41/06, F02D41/16 take precedence) · CPC title

• F02D41/021

  Introducing corrections for particular conditions exterior to the engine (conjoint control of vehicle sub-units for propelling the vehicle B60W30/18) · CPC title

• F02D31/001

  Electric control of rotation speed · CPC title