Torque monitoring device

Patent metadata

Field	Value
Publication number	US-10493574-B2
Application number	US-201715676227-A
Country	US
Kind code	B2
Filing date	Aug 14, 2017
Priority date	Aug 14, 2017
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A torque monitoring device for a fastener is provided. The torque monitoring device includes a sensing element mounted within the fastener. The sensing element measures a value of fastener elongation. The torque monitoring device also includes a receiving element coupled to a torque machine. The receiving element is communicably coupled with the sensing element. The receiving element is configured to receive the value of fastener elongation from the sensing element. The receiving element is also configured to generate an alert for terminating a torque operation being performed by the torque machine when the value of fastener elongation exceeds a pre-set value of fastener elongation.

First claim

What is claimed is:

1. A torque monitoring device for a fastener, the torque monitoring device comprising:
a sensing element mounted within a counter bore of the fastener, wherein the sensing element measures a value of fastener elongation; and
a receiving element coupled to a torque machine, the receiving element being communicably coupled with the sensing element, wherein the receiving element is configured to:
receive the value of fastener elongation from the sensing element; and
generate an alert for terminating a torque operation being performed by the torque machine when the value of fastener elongation exceeds a pre-set value of fastener elongation.

2. The torque monitoring device of claim 1 , wherein the sensing element includes at least one of an ultrasonic sensor and a magnetic sensor.

3. The torque monitoring device of claim 1 , wherein the sensing element includes a spring element for measuring the value of fastener elongation.

4. The torque monitoring device of claim 1 , wherein the receiving element is communicably coupled with a control module associated with the torque machine, the control module being configured to terminate the torque operation based on the alert received from the receiving element.

5. The torque monitoring device of claim 1 , wherein a central machine system is communicably coupled with the sensing element, the central machine system being configured to:
receive the value of fastener elongation from the sensing element; and
generate an alert indicative of clamping force in the fastener based on the value of fastener elongation received from the sensing element.

6. The torque monitoring device of claim 1 , wherein the fastener is a track bolt that couples a track link of an undercarriage joint with a track shoe of the undercarriage joint.

7. An undercarriage joint comprising:
a track shoe adapted to contact a ground surface;
a track link for coupling with the track shoe; and
a fastener for coupling the track link with the track shoe, the fastener defining a counterbore therein and including a sensing element mounted within the counterbore for measuring a value of fastener elongation,
wherein a torque machine is used to perform a torque operation on the fastener for coupling the track link with the track shoe, the torque machine including a receiving element communicably coupled with the sensing element, wherein the receiving element is configured to:
receive the value of fastener elongation from the sensing element; and
generate an alert for terminating the torque operation when the value of fastener elongation exceeds a pre-set value of fastener elongation.

8. The undercarriage joint of claim 7 , wherein the sensing element includes at least one of an ultrasonic sensor and a magnetic sensor.

9. The undercarriage joint of claim 7 , wherein the sensing element includes a spring element for measuring the value of fastener elongation.

10. The undercarriage joint of claim 7 , wherein the receiving element is communicably coupled with a control module associated with the torque machine, the control module being configured to terminate the torque operation based on the alert received from the receiving element.

11. The undercarriage joint of claim 7 , wherein a central machine system is communicably coupled with the sensing element, the central machine system being configured to:
receive the value of fastener elongation from the sensing element; and
generate an alert indicative of clamping force in the fastener based on the value of fastener elongation received from the sensing element.

12. A torque monitoring device for a fastener, the torque monitoring device comprising:
a sensing element mounted within the fastener, wherein the sensing element measures a value of fastener elongation; and
a receiving element coupled to a torque machine, the receiving element being communicably coupled with the sensing element, the receiving element being configured to:
receive the value of fastener elongation from the sensing element; and
generate an alert for terminating a torque operation being performed by the torque machine when the value of fastener elongation exceeds a pre-set value of fastener elongation,

wherein the sensing element includes at least one of an ultrasonic sensor, a magnetic sensor, and a spring element for measuring the value of fastener elongation.

13. The torque monitoring device of claim 12 , wherein the receiving element is communicably coupled with a control module associated with the torque machine, the control module being configured to terminate the torque operation based on the alert received from the receiving element.

14. The torque monitoring device of claim 12 , wherein a central machine system is communicably coupled with the sensing element, the central machine system being configured to:
receive the value of fastener elongation from the sensing element; and
generate an alert indicative of clamping force in the fastener based on the value of fastener elongation received from the sensing element.

15. The torque monitoring device of claim 12 , wherein the fastener is a track bolt that couples a track link of an undercarriage joint with a track shoe of the undercarriage joint.

Assignees

• Caterpillar Inc

Inventors

• Johannsen Eric J
• Mckinley Timothy A

Classifications

• G01L5/24

  for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed · CPC title

• G01L5/0038

  applying a pushing force · CPC title

• G01L5/0004

  Force transducers adapted for mounting in a bore of the force receiving structure (G01L5/0009 takes precedence) · CPC title

• B23P19/065 Primary

  Arrangements for torque limiters or torque indicators in screw or nut setting machines (for hand tools B25B23/14) · CPC title

• B25B23/14

  Arrangement of torque limiters or torque indicators in wrenches or screwdrivers (couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L) · CPC title