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

• US 9,458,903 B2
• Filed: 03/14/2014
• Issued: 10/04/2016
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Joy Global Surface Mining Inc. (Mitsui & Company Limited)
• Original Assignee: Harnischfeger Technologies Inc. (Mitsui & Company Limited)
• Inventors: Bhushan, Anubhaw, Rikkola, Michael J., Gudur, Shashikiran
• Primary Examiner(s): Khatib, Rami
• Assistant Examiner(s): BOOMER, JEFFREY C
• Application Number:
  US14/213,637
• Publication Number:
  US 20140277964A1
• Time in Patent Office: 935 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B60T 13/662 characterised by specified functions of the control system components
• CPC Class Codes: B60T 17/22 Devices for monitoring or checking brake systems; Signal devices
• CPC Class Codes: B60T 8/88 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• CPC Class Codes: E02F 3/43 Control of dipper or bucket position; Control of sequence of drive operations
• CPC Class Codes: E02F 9/2083 Control of vehicle braking systems
• CPC Class Codes: E21C 35/04 Safety devices operating in the event of breakage of a haulage cable or chain E21C29/20
• CPC Class Codes: E21C 47/00 Machines for obtaining or the removal of materials in open-pit mines obtaining peat E21C49/00
• CPC Class Codes: F16D 2125/00 Components of actuators
• CPC Class Codes: F16D 66/00 Arrangements for monitoring working conditions, e.g. wear, temperature
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass
• CPC Class Codes: H02P 3/00 Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters stopping of synchronous motors with electronic commutators except reluctance motors, H02P6/24; stopping dynamo-electric motors rotating step by step H02P8/24; vector control H02P21/00

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.

Claims

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.