System and method for monitoring a brake system of a mining machine

Patent metadata

Field	Value
Publication number	US-9458903-B2
Application number	US-201414213637-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Mar 14, 2013
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

A mining machine including a brake operable to halt motion of a component of the mining machine; a first sensor operable to sense a characteristic of the brake to generate brake data; a second sensor operable to sense motion of the component of the mining machine to generate motion data; and a controller. The controller is operable to receive the brake data and the motion data, analyze the brake data and the motion data according to a brake set model and a brake release model, and output an alert in response to an issue with the analyzed brake data or the analyzed motion data.

First claim

What is claimed is:

1. A mining machine comprising:
a motor operable to move a component of the mining machine;
a brake operable to halt motion of the component of the mining machine;
a first sensor operable to sense a characteristic of the brake to generate brake data;
a second sensor operable to sense relative movement of the motor to generate motion data; and
a controller operable to
receive the brake data and the motion data,
analyze the brake data and the motion data according to a brake set model, the brake set model including determining a brake set time of the component, the brake set time being a time difference between a first time, when the brake is engaged, and a second time, when the second sensor indicates substantially no motion of the component braked by the engaged brake, and
output an alert in response to an issue with the analyzed brake data or the analyzed motion data.

2. The mining machine of claim 1 , wherein the brake pressure model further includes comparing the sensed brake pressure to an average brake pressure.

3. The mining machine of claim 1 , wherein the brake set model is based on comparing the brake set time to an average brake set model time period.

4. The mining machine of claim 1 , wherein the brake release model is based on comparing a brake release time to an average brake release model time period.

5. The mining machine of claim 4 , wherein the brake release indicator indicates that a brake solenoid has been activated.

6. The mining machine of claim 1 , wherein the alert is output to a network.

7. The mining machine of claim 1 , wherein the alert is output to a user.

8. The mining machine of claim 1 , wherein the alert shuts down the mining machine.

9. The mining machine of the claim 1 , wherein the controller is further operable to analyze the brake data and the motion data according to a brake release model, wherein analyzing the brake data and the motion data according to the brake release model includes determining a brake release time of the component, the brake release time being a time difference between a third time when the brake is disengaged, and a fourth time a brake release indicator, which indicates that the brakes are released, turns on.

10. The mining machine of claim 1 , wherein the controller is further operable to analyze the brake data and the motion data according to a brake pressure model, the brake pressure model including determining an average time period in which a brake pressure sensed by the first sensor reaches a predetermined threshold.

11. A method of monitoring health of a brake of a mining machine, the mining machine including a movable component and a motor operable to move the movable component;
the method comprising;
sensing, with a first sensor, a characteristic of the brake to generate brake data;
sensing, with a second sensor, relative movement of a motor to generate motion data;
analyzing, using a controller, the brake data and the motion data according to a brake set model, the brake set model including determining a brake set time of the movable component, the brake set time being a time difference between a first time, when the brake is engaged, and a second time, when the second sensor indicates substantially no motion of the movable component braked by the engaged brake; and
outputting the alert on a user interface an alert in response to an issue with the analyzed brake data or the analyzed motion data.

12. The method of claim 11 , wherein the brake pressure model further includes comparing the sensed brake pressure to an average brake pressure.

13. The method of claim 11 , wherein the brake set model is based on comparing the brake set time to an average brake set model time period.

14. The method of claim 11 , wherein the brake release model is based on comparing the brake release time to an average brake release model time period.

15. The method of claim 14 , wherein the brake release indicator indicates that a brake solenoid has been activated.

16. The method of claim 11 , wherein the alert is output to a network.

17. The method of claim 11 , wherein the alert is output to a user.

18. The method of claim 11 , wherein the alert shuts down the mining machine.

19. The method of claim 11 , wherein the analyzing is performed locally by a controller of the mining machine.

20. The method of claim 11 , further comprising outputting the brake data and the motion data to a remote server, wherein the remote server performs the steps of analyzing of the brake data and the motion data.

Assignees

• Harnischfeger Tech Inc

Inventors

• Rikkola Michael J
• Gudur Shashikiran
• Bhushan Anubhaw

Classifications

• B60T17/22

  Devices for monitoring or checking brake systems; Signal devices · CPC title

• E02F9/2083

  Control of vehicle braking systems · CPC title

• H02P3/00

  Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters (stopping of synchronous motors with electronic commutators H02P6/24; stopping dynamo-electric motors rotating step by step H02P8/24; vector control H02P21/00) · CPC title

• E02F3/43

  Control of dipper or bucket position; Control of sequence of drive operations · CPC title

• E21C35/04

  Safety devices (operating in the event of breakage of a haulage cable or chain E21C29/20) · CPC title