WO2002065080A1 - A torsion load measuring device - Google Patents

A torsion load measuring device Download PDF

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Publication number
WO2002065080A1
WO2002065080A1 PCT/AU2002/000130 AU0200130W WO02065080A1 WO 2002065080 A1 WO2002065080 A1 WO 2002065080A1 AU 0200130 W AU0200130 W AU 0200130W WO 02065080 A1 WO02065080 A1 WO 02065080A1
Authority
WO
WIPO (PCT)
Prior art keywords
torsion
measuring device
load
mounting block
load measuring
Prior art date
Application number
PCT/AU2002/000130
Other languages
French (fr)
Inventor
Stewart James Wright
Original Assignee
Digga Australia Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digga Australia Pty Ltd filed Critical Digga Australia Pty Ltd
Publication of WO2002065080A1 publication Critical patent/WO2002065080A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges

Definitions

  • This invention relates to torsion load measuring devices and in particular devices used for measuring the output torsion of pendulum mounted drive units in boring and piling applications.
  • a torsion load measuring device comprising an elongate mounting block providing a first pivot axis connectable to a parent machine and a second pivot axis at right angles to the first pivot axis connectable to a active boring tool, a load measuring device mounted on the mounting block, and means for transmitting a signal indicating output torsion from the load measuring device to a remote visual indication device.
  • the mounting block is provided with a plurality of flat outer surfaces upon which a plurality of load cells are positioned.
  • the load cell or cells are protected by a sleeve mounted on the mounting block.
  • the device is connected to the boom of a parent machine and the motor and gearbox combination of an auger of a drilling apparatus in a manner which enables the boring tool to pendulate on a first axis relative to the mounting block and the mounting block to pendulate on the boom on a second axis at right angles to the first axis.
  • the invention resides in a method of measuring torsion loads on a boring tool the method comprising the steps of;
  • the load measurements are transmitted by electrical wires.
  • the load measurements are transmitted by wireless apparatus.
  • Figure 1 is a diagrammatic side view of a typical boring apparatus to which the present invention relates.
  • Figure 2 is a perspective and diagrammatic sketch of a torsion measuring device according to the present invention.
  • Figures 3 and 4 are perspective and side views respectively of the aspects of the device of figure 2, and
  • Figure 5 is a sectional drawing taken at VI :VI of figure 4
  • Figure 6 is a front view of a control and information console for the device of the present invention
  • a typical auger drive unit comprises a parent machine 1 , commonly an excavator, which has an extending boom arm 2.
  • the excavator can be readily adapted by removal of the excavator bucket and attachment of a drive unit including hydraulic motor and gearbox 3 and an auger bit 4.
  • the drive unit is attached to the boom arm via pendulum mounting means 5.
  • the present invention provides a mounting block generally indicated by arrow 10 which provides a first pivot axis X:X adapted for connection to a parent machine (not shown) and a second pivot axis Y:Y at right angles to the first pivot axis adapted for connection to a boring or piling tool (not shown).
  • a plurality of load cells generally indicated by arrow 11 are attached to a central portion of the mounting block behind a sleeve 1 1a.
  • the respective pivot axis X:X and Y:Y each provide pivot axles 12 connected to pairs of lugs.
  • Upper lugs 13 can be welded to the pendulum mounting means (not shown) of a parent machine and lower lugs 14 welded to the gearbox 3 and driving motor connected to an auger.
  • the mounting block 10 can be fabricated from heat-treated high quality steel chosen for load cell applications.
  • the mounting block 10, excluding the lugs 13, 14, is illustrated in more detail by figures 3 to 6.
  • the mounting block 10 comprises a solid elongate sleeve bar 15 which is of a hexagonal or octagonal cross-section.
  • the metal bar 15 is machined to provide axle apertures 16, and mounts a wiring connector 17.
  • the sleeve 11a is placed adjacent the connector 17 and protects load cells 18 fixed to flat side surfaces of the bar 15.
  • the load cells 11 are strategically placed around the perimeter of the bar 15 and each are being electrically connected by connecting wires 19 which in turn are connected to the connector 17.
  • An elongate wiring aperture 20 provides means by which wiring from the connector 17 can be fed to the information and control console generally indicated by arrow 21 in figure 6, which can be located next in the cab of the parent machine.
  • the load cells 11 and console 21 can be d.c. powered.
  • the console 21 is programmed to enable an operator to enter and retrieve specific information and to read of active torsion loads (weights) during the operation of an auger.
  • the console may include a torsion load display 22, an auxiliary display 23, a unit indicator 24 eg, grams, pounds, tonnes, an output display 25, and status enunciators 26.
  • the measuring devices wireless signal transmission may be adapted in conjunction with a mounted or hand held display device.

Abstract

A torsion load measuring device that provides for a mounting block to which torque measuring device is fixed. The mounting block is interposed between the gearbox of a ground boring auger and pendulum mounting means of a parent machine and the torque measuring device can be electrically connected to a digital indicator mounted within a control console of a parent machine.

Description

A TORSION LOAD MEASURING DEVICE
TECHNICAL FIELD This invention relates to torsion load measuring devices and in particular devices used for measuring the output torsion of pendulum mounted drive units in boring and piling applications.
BACKGROUND ART There are numerous occasions when it is desirable or essential for the operator of a boring and or piling machine to be aware of torsion loads during the operation of his machine. In the instance of setting structural piles or poles torsion values are set by the supervising engineer and must be adhered to.
Currently there are various means of measuring, monitoring or calculating torsion loads the most common of which is to measure the inlet and outlet pressures of a hydraulic motor and to relate these to displacements and gearbox ratios to arrive at the theoretical torque.
The problem with this procedure is that mechanical and volumetric losses in a system prevent accurate readings.
It is an object of the present invention to provide a torsion load- measuring device for measuring torsion forces during boring and piling operations.
Further objects and advantages of the present invention will become apparent from the ensuing description which is given by way of example.
DISCLOSURE OF INVENTION In one form the invention resides in a torsion load measuring device comprising an elongate mounting block providing a first pivot axis connectable to a parent machine and a second pivot axis at right angles to the first pivot axis connectable to a active boring tool, a load measuring device mounted on the mounting block, and means for transmitting a signal indicating output torsion from the load measuring device to a remote visual indication device.
Suitably, the mounting block is provided with a plurality of flat outer surfaces upon which a plurality of load cells are positioned. Suitably, the load cell or cells are protected by a sleeve mounted on the mounting block.
Suitably, the device is connected to the boom of a parent machine and the motor and gearbox combination of an auger of a drilling apparatus in a manner which enables the boring tool to pendulate on a first axis relative to the mounting block and the mounting block to pendulate on the boom on a second axis at right angles to the first axis.
In another form, the invention resides in a method of measuring torsion loads on a boring tool the method comprising the steps of;
(a) interposing a torsion load measuring device as described above between the boom of a parent machine and a boring tool, and
(b) measuring torsion loads using load cells attached to the torsion measuring device, and
(c) transmitting load measurements to a receiving device remote from the torsion load measuring device.
Suitably, the load measurements are transmitted by electrical wires. Suitably, the load measurements are transmitted by wireless apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS Aspects of the present invention will now described with reference to the accompanying drawings in which; Figure 1 is a diagrammatic side view of a typical boring apparatus to which the present invention relates, and
Figure 2 is a perspective and diagrammatic sketch of a torsion measuring device according to the present invention.
Figures 3 and 4 are perspective and side views respectively of the aspects of the device of figure 2, and
Figure 5 is a sectional drawing taken at VI :VI of figure 4, and Figure 6 is a front view of a control and information console for the device of the present invention
BEST MODE With respect to Figure 1 of the drawings a typical auger drive unit comprises a parent machine 1 , commonly an excavator, which has an extending boom arm 2.
The excavator can be readily adapted by removal of the excavator bucket and attachment of a drive unit including hydraulic motor and gearbox 3 and an auger bit 4. The drive unit is attached to the boom arm via pendulum mounting means 5.
With respect to Figures 2 to 5 of the drawings the present invention provides a mounting block generally indicated by arrow 10 which provides a first pivot axis X:X adapted for connection to a parent machine (not shown) and a second pivot axis Y:Y at right angles to the first pivot axis adapted for connection to a boring or piling tool (not shown).
A plurality of load cells generally indicated by arrow 11 are attached to a central portion of the mounting block behind a sleeve 1 1a.
The respective pivot axis X:X and Y:Y each provide pivot axles 12 connected to pairs of lugs.
Upper lugs 13 can be welded to the pendulum mounting means (not shown) of a parent machine and lower lugs 14 welded to the gearbox 3 and driving motor connected to an auger.
The mounting block 10 can be fabricated from heat-treated high quality steel chosen for load cell applications.
The mounting block 10, excluding the lugs 13, 14, is illustrated in more detail by figures 3 to 6.
The mounting block 10 comprises a solid elongate sleeve bar 15 which is of a hexagonal or octagonal cross-section. The metal bar 15 is machined to provide axle apertures 16, and mounts a wiring connector 17. The sleeve 11a is placed adjacent the connector 17 and protects load cells 18 fixed to flat side surfaces of the bar 15.
The load cells 11 are strategically placed around the perimeter of the bar 15 and each are being electrically connected by connecting wires 19 which in turn are connected to the connector 17.
An elongate wiring aperture 20 provides means by which wiring from the connector 17 can be fed to the information and control console generally indicated by arrow 21 in figure 6, which can be located next in the cab of the parent machine. The load cells 11 and console 21 can be d.c. powered.
The console 21 is programmed to enable an operator to enter and retrieve specific information and to read of active torsion loads (weights) during the operation of an auger.
The console may include a torsion load display 22, an auxiliary display 23, a unit indicator 24 eg, grams, pounds, tonnes, an output display 25, and status enunciators 26.
As an alternative to a hard wiring connection between the console and the measuring devices wireless signal the measuring devices wireless signal transmission may be adapted in conjunction with a mounted or hand held display device.
It is considered that the present invention will provide many advantages over existing methods for torsion measurements, in particular the convenience and accuracy of readings.
Aspects of the present invention have been described by way of example only and it will be appreciated that modifications and additions thereto may be made without departing from the scope thereof, as defined in the appended claims.

Claims

CLAIMS:
1. A torsion load measuring device comprising an elongate mounting block providing a first pivot axis connectable to a parent machine and a second pivot axis at right angles to the first pivot axis connectable to a active boring tool, a load measuring device mounted on the mounting block, and means for transmitting a signal indicating output torsion from the load measuring device to a remote visual indication device.
2. A torsion measuring device as claimed claim 1 wherein the mounting block is provided with a plurality of flat outer surfaces upon which a plurality of load cells are positioned.
3. A torsion load measuring device as claimed in claim 1 wherein the load cell or cells are protected by a sleeve mounted on the mounting block.
4. A torsion load measuring device as claimed in claim 1 connected to the boom of a parent machine and the motor and gearbox combination of an auger of a drilling apparatus in a manner which enables the boring tool to pendulate on a first axis relative to the mounting block and the mounting block to pendulate on the boom on a second axis at right angles to the first axis.
5. A method of measuring torsion loads on a boring tool the method comprising the steps of;
(d) interposing a torsion load measuring device as claimed in claim 1 between the boom of a parent machine and a boring tool, and (e) measuring torsion loads using load cells attached to the torsion measuring device, and (f) transmitting load measurements to a receiving device remote from the torsion load measuring device.
6. A method as claimed in claim 5 wherein the load measurements are transmitted by electrical wires.
7. A method as claimed in claim 5 wherein the load measurements are transmitted by wireless apparatus.
PCT/AU2002/000130 2001-02-09 2002-02-11 A torsion load measuring device WO2002065080A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR3004A AUPR300401A0 (en) 2001-02-09 2001-02-09 A torsion load measuring device
AUPR3004 2001-02-09

Publications (1)

Publication Number Publication Date
WO2002065080A1 true WO2002065080A1 (en) 2002-08-22

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Application Number Title Priority Date Filing Date
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AU (1) AUPR300401A0 (en)
WO (1) WO2002065080A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016217922A (en) * 2015-05-22 2016-12-22 旭化成建材株式会社 Rotation torque measuring device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359898A (en) * 1980-12-09 1982-11-23 Schlumberger Technology Corporation Weight-on-bit and torque measuring apparatus
US4608861A (en) * 1984-11-07 1986-09-02 Macleod Laboratories, Inc. MWD tool for measuring weight and torque on bit
US4811597A (en) * 1988-06-08 1989-03-14 Smith International, Inc. Weight-on-bit and torque measuring apparatus
US4958517A (en) * 1989-08-07 1990-09-25 Teleco Oilfield Services Inc. Apparatus for measuring weight, torque and side force on a drill bit
US5386724A (en) * 1993-08-31 1995-02-07 Schlumberger Technology Corporation Load cells for sensing weight and torque on a drill bit while drilling a well bore
AU736985B2 (en) * 1997-09-29 2001-08-09 Hydrapower Pty Ltd Auger unit for torque transducer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359898A (en) * 1980-12-09 1982-11-23 Schlumberger Technology Corporation Weight-on-bit and torque measuring apparatus
US4608861A (en) * 1984-11-07 1986-09-02 Macleod Laboratories, Inc. MWD tool for measuring weight and torque on bit
US4811597A (en) * 1988-06-08 1989-03-14 Smith International, Inc. Weight-on-bit and torque measuring apparatus
US4958517A (en) * 1989-08-07 1990-09-25 Teleco Oilfield Services Inc. Apparatus for measuring weight, torque and side force on a drill bit
US5386724A (en) * 1993-08-31 1995-02-07 Schlumberger Technology Corporation Load cells for sensing weight and torque on a drill bit while drilling a well bore
AU736985B2 (en) * 1997-09-29 2001-08-09 Hydrapower Pty Ltd Auger unit for torque transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016217922A (en) * 2015-05-22 2016-12-22 旭化成建材株式会社 Rotation torque measuring device

Also Published As

Publication number Publication date
AUPR300401A0 (en) 2001-03-08

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