MEASUREMENT DEVICE AND A SYSTEM AND METHOD FOR USING THE SAME

• US 20110313724A1
• Filed: 06/14/2011
• Published: 12/22/2011
• Est. Priority Date: 06/18/2010
• Status: Active Grant

• Current Assignee: Pile Dynamics, Inc.
• Original Assignee: Pile Dynamics, Inc.
• Inventors: Dalton, Wayne, Raines, Tim
• Granted Patent: US 8,612,175 B2
• Time in Patent Office: Days
• US Class Current: 702/166
• CPC Class Codes: G01B 21/18 for measuring depth

Abstract

A measurement device system and method of using the same for determining the depth of a pile being installed and/or the equipment used to install the pile. The device including an encoder assembly having a support attachable to a structural component of a rig wherein the support has a pivot joint coaxial with a load arm axis. The encoder assembly has a load arm rotatable about the arm axis and with a wheel near its distal end that is rotatable about a wheel axis with an encoder joined to the wheel that moves with the wheel. The encoder assembly further including a biasing assembly to urge the load arm and wheel into an engaged condition relative to the associated pile installation machine such that the wheel frictionally engages a surface of another structural component of the rig. Thus, the displacement of the first structural component relative to the second component rotates the wheel about the wheel axis and the encoder. This information can then be used to determine pile depth.

Claims

1. A measurement device for use with a pile installation machine, the measurement device for determining a depth of a pile being installed into a ground layer by measuring displacement of a working head of the pile installation machine, the measurement device comprising at least one encoder assembly having a support bracket fixably attachable to a first associated structural component of an associated pile installation machine, the support bracket having a mounting arrangement for the fixable attachment to the first structural component and a pivot joint coaxial with a load arm axis, the at least one encoder assembly further including a load arm rotatable about the load arm axis and having a base end near the load arm axis and a distal end spaced from the load arm axis, the load arm further including a wheel near the distal end that is rotatable about a wheel axis, the at least one encoder assembly further including an encoder joined to the wheel such that the wheel drives the encoder as it rotates, the at least one encoder assembly further including a wheel force biasing assembly loaded between the support bracket and the load arm configured to urge the load arm and wheel about the load arm axis into an engaged condition relative to the associate pile installation machine such that the wheel frictionally engages a surface of a second associated structural component and the displacement of the first structural component relative to the surface of the second structural component rotates the wheel about the wheel axis and thus rotates the encoder, the measurement device further including a communication system to send encoder data to an associated computing system for receiving the encoder data to determine at least one of the displacement of the first structural component relative to the surface of the second structural component and the depth of an associate pile.

2. The measurement device of claim 1, wherein the load arm is also pivotable about a second axis transverse to the load arm axis.

3. The measurement device of claim 2, wherein the second axis is aligned with the load arm axis.

4. The measurement device of claim 2, wherein the at least one encoder assembly includes a control arm pivotable about the load arm axis and extending between a base end near the load arm axis and a distal end spaced from the base end, the control arm being axially spaced from the load arm along the load arm axis and including a side load biasing assembly between the control arm base and distal ends, the biasing assembly having a side load shaft generally parallel to and spaced from the load axis that extends between the control arm and the load arm, the side load biasing assembly further including at least one biasing member loaded against the load arm, the at least one biasing members urging the load arm into a centered position while allowing controlled movement of the load arm about the second axis.

5. The measurement device of claim 4, wherein the side load shaft is fixed to one of the control arm and the load arm and extends through an opening in the other of the control arm and the load arm, the at least one biasing member including a pair of biasing members positioned on either side of the opening in the other arm and engaging the other arm.

6. The measurement device of claim 5, wherein the opening in the other of the control arm and the load arm is an elongated slot.

7. The measurement device of claim 4, wherein the wheel force biasing assembly loaded between the support bracket and the load arm includes a wheel force biasing shaft extending between the control arm and the support bracket, the wheel force biasing assembly further including at least one biasing member engaging one of the control arm and the support bracket.

8. The measurement device of claim 4, wherein the at least one encoder assembly further includes a pivot shaft extending from the pivot joint and coaxial with the load arm axis, both the load arm and the control arm being joined to the pivot shaft.

9. The measurement device of claim 1, further including a transceiver for communicating with the associated computing system.

10. The measurement device of claim 1, wherein the at least one encoder assembly includes a first and as second encoder assembly.

11. The measurement device of claim 1, wherein the encoder rotates about the wheel axis.

12. The measurement device of claim 1, wherein the associated pile is an auger cast pile and the displacement is of the auger for the casting of the pile.

13. The measurement device of claim 1, wherein the first associated structural component of the pile installation machine is at least one of a working head, a gear box, a hammer cage and a support tower of the associated pile installation machine and the second associated structural component is at least one of the support tower and a cable pulley of the associated pile installation machine.

14. The measurement device of claim 1, wherein the support bracket is an L-shaped bracket having a first and a second leg forming the L-shape, the pivot joint being formed in the first leg, the mounting arrangement being in at least one of the first and the second legs, the mounting arrangement includes a plurality of mounting openings and a plurality of fasteners.

15. The measurement device of claim 1, wherein the load arm has a length and the length is selectively adjustable.

16. A system for use with a pile installation machine, the system for determining a depth of a pile being installed into a ground layer by measuring displacement of a working head of the pile installation machine, the system comprising a measurement device having at least one encoder assembly including a support bracket fixably attachable to a first associated structural component of an associated pile installation machine, the support bracket having a mounting arrangement for the fixable attachment to the first structural component and a pivot joint coaxial with a load arm axis, the at least one encoder assembly further including a load arm rotatable about the load arm axis and having a base end near the load arm axis and a distal end spaced from the load arm axis, the load arm further including a wheel near the distal end that is rotatable about a wheel axis, the at least one encoder assembly further including an encoder joined to the wheel such that the wheel drives the encoder as it rotates, the at least one encoder assembly further including a wheel force biasing assembly loaded between the support bracket and the load arm configured to urge the load arm and wheel about the load arm axis into an engaged condition relative to the associate pile installation machine such that the wheel frictionally engages a surface of a second associated structural component and the displacement of the first structural component relative to the surface of the second structural component rotates the wheel about the wheel axis and thus rotates the encoder;

a communication system and a computing system, the communication system controlling the flow of data between the measurement device and the computing system wherein at least the data generated by the encoder is transmitted to the computing system, the computing system configured to determine the depth of the associate pile from the data produced by the at least one encoder assembly.

17. The system of claim 16, wherein the load arm axis is also pivotable about a second axis transverse to the load arm axis.

18. The system of claim 17, wherein the at least one encoder further include a control arm pivotable about the load arm axis and extending between a base end near the load arm axis and a distal end spaced from the base end, the control arm being axially spaced from the load arm along the load arm axis and including a side load biasing assembly between the control arm base and distal ends, the biasing assembly having a side load shaft generally parallel to and spaced from the load axis that extends between the control arm and the load arm, the side load biasing assembly further including at least one biasing member loaded against the load arm, the at least one biasing members urging the load arm into a centered position while allowing controlled movement of the load arm about the second axis.

19. The system of claim 18, wherein the side load shaft is fixed to one of the control arm and the load arm and extends through an opening in other of the control arm and the load arm, the at least one biasing member including a pair of biasing members position on either side of the opening in the other arm and engaging the other arm.

20. The system of claim 18, wherein the wheel force biasing assembly loaded between the support bracket and the load arm includes a wheel force biasing shaft extending between the control arm and the support bracket, the wheel force biasing assembly further including at least one biasing member engaging one of the control arm and the support bracket.

21. The system of claim 16, wherein the encoder assembly further includes a pivot shaft extending from the pivot joint and coaxial with the load arm axis, both the load arm and the control arm being joined to the pivot shaft.

22. The system of claim 16, further including a transceiver for communicating between the measurement device and the computing system.

23. The system of claim 16, wherein the at least one encoder assembly includes a first and as second encoder assembly, the computing system being configured to compare readings from both the first and second encoder assemblies.

24. The system of claim 16, wherein the associated pile is an auger cast pile and the displacement is of the auger for casting the pile.

25. The system of claim 16, wherein the first associated structural component of the pile installation machine is at least one of a working head, a gear box, a hammer cage and a support tower of the associated pile installation machine and the second associated structural component is at least one of the support tower and a cable pulley of the associated pile installation machine.

26. The system of claim 16, wherein the computing system is a hand held device.

27. The system of claim 16, wherein the computing system is a remote computing system.

28. A method of determining a depth of a pile being installed into a ground layer by measuring displacement of a working head of a pile installation machine, the method comprising the steps of:

providing a measurement device having at least one encoder assembly including a support bracket fixably attachable to a first associated structural component of an associated pile installation machine, the support bracket having a mounting arrangement for the fixable attachment to the first structural component and a pivot joint coaxial with a load arm axis, the at least one encoder assembly further including a load arm rotatable about the load arm axis and having a base end near the load arm axis and a distal end spaced from the load arm axis, the load arm further including a wheel near the distal end that is rotatable about a wheel axis, the at least one encoder assembly further including an encoder joined to the wheel such that the wheel drives the encoder as it rotates, the at least one encoder assembly further including a wheel force biasing assembly loaded between the support bracket and the load arm configured to urge the load arm and wheel about the load arm axis into an engaged condition relative to the associate pile installation machine such that the wheel frictionally engages a surface of a second associated structural component and the displacement of the first structural component relative to the second structural component rotates the wheel about the wheel axis and thus rotates the encoder;

securing the at least one encoder assembly to the first structural component;

adjusting the at least one encoder assembly such that the wheel frictionally engages the surface of the second associated structural component;

providing a computing system;

providing a communication system to control the flow of data between the measurement device and the computing system;

generating rotational data based on the rotation of the wheel during the installation of the pile;

determining a displacement between the first structural component and the surface of the second structural component based on the rotational data; and

,

calculating a depth of the pile based the displacement.

29. The method of claim 28, further including the step of mounting the communication system to the first structural object, the communication system including a wireless connection with the computing system.

30. The method of claim 28, further including the step of stopping the installation of the pile when a desired depth has been reached.

31. The method of claim 28, wherein the load arm axis is also pivotable about a second axis transverse to the load arm axis.

32. The method of claim 31, wherein the at least one encoder further include a control arm pivotable about the load arm axis and extending between a base end near the load arm axis and a distal end spaced from the base end, the control arm being axially spaced from the load arm along the load arm axis and including a side load biasing assembly between the control arm base and distal ends, the biasing assembly having a side load shaft generally parallel to and spaced from the load axis that extends between the control arm and the load arm, the side load biasing assembly further including at least one biasing member loaded against the load arm, the at least one biasing members urging the load arm into a centered position while allowing controlled movement of the load arm about the second axis.

33. The method of claim 28, wherein the at least one encoder assembly includes a first and a second encoder assembly, the method further including the step of collecting data from both the first and second encoder assemblies and comparing the data collected from the first and second encoder assemblies for the calculating step.

34. The method of claim 28, further including the step of transmitting the rotational data to a remote location and at least one of the determining and calculating steps being performed at the remote location.