Working machine and control system

Patent metadata

Field	Value
Publication number	US-9556589-B2
Application number	US-201414279103-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	May 20, 2013
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

A working machine comprising a ground engaging structure and a propulsion system for moving the working machine via the ground engaging structure. A body is supported on the ground engaging structure, and a working arm is connected to the body and has a carriage at one end for receiving an attachment. A control system is provided for selectively and variably oscillating the carriage.

First claim

The invention claimed is:

1. A working machine, comprising:
a ground engaging structure;
a propulsion system for moving the working machine via the ground engaging structure;
a body supported on the ground engaging structure;
a working arm connected to the body and having a carriage at one end for receiving an attachment; and
a control system for selectively oscillating the carriage, wherein the control system comprises:
an actuator configured and arranged to selectively oscillate the carriage;
an electronic controller configured to control the actuator; and
a user input device in communication with the controller;

wherein the user input device comprises an oscillation input configured to selectively transmit an oscillation signal to the electronic controller to indicate a desired amplitude and/or frequency of oscillation of the carriage, wherein the oscillation input is variable to alter the oscillation signal transmitted to the electronic controller,
wherein the electronic controller is configured to upon receipt of the oscillation signal selectively activate the actuator to oscillate the carriage at the desired amplitude and/or frequency indicated by the oscillation signal,
wherein the controller is configured to signal actuation of the actuator to move the carriage from a first position to a second position simultaneously whilst oscillating the carriage at the desired amplitude and/or frequency, and
wherein the controller is configured to move the carriage in a desired direction at a slower rate when simultaneously moving and oscillating the carriage than when only moving the carriage.

2. The working machine according to claim 1 , wherein the oscillation signal includes an intensity indicator, and the controller is configured to use an algorithm and/or lookup table for transforming the intensity indicator to the desired amplitude and/or frequency of oscillation.

3. The working machine according to claim 1 , wherein simultaneous movement and oscillation of the carriage is selectively applied dependent upon a signal received from an indicator of the control system.

4. The working machine according to claim 1 , wherein the desired change of position indicated by the position signal is proportional to the position of the control device with respect to the neutral position of the control device.

5. The working machine according to claim 1 , wherein the controller is configured to detect when the control device is in the neutral position and only send a signal to actuate oscillations of the carriage when the input device is out of the neutral position.

Assignees

• Jc Bamford Excavators Ltd
• Bamford Excavators Ltd

Inventors

• Brooks Graham Mark
• Brooks Richard
• Bell Samuel Josef

Classifications

• E02F9/2012 Primary

  Setting the functions of the control levers, e.g. changing assigned functions among operations levers, setting functions dependent on the operator or seat orientation · CPC title

• E02F3/405

  using vibrating means (blades or levelling tools with vibrating teeth E02F3/8155; vibrating rippers E02F5/326) · CPC title

• E02F3/3402

  the arms being telescopic (fork-lift trucks with a telescopic boom B66F9/0655) · CPC title

• F15B2211/6346

  representing a state of input means, e.g. joystick position · CPC title

• F15B2211/327

  electrically or electronically · CPC title