CA2617476A1 - Dragline bucket rigging and control apparatus - Google Patents

Dragline bucket rigging and control apparatus Download PDF

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Publication number
CA2617476A1
CA2617476A1 CA002617476A CA2617476A CA2617476A1 CA 2617476 A1 CA2617476 A1 CA 2617476A1 CA 002617476 A CA002617476 A CA 002617476A CA 2617476 A CA2617476 A CA 2617476A CA 2617476 A1 CA2617476 A1 CA 2617476A1
Authority
CA
Canada
Prior art keywords
dragline
control system
bucket
modes
boom assembly
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002617476A
Other languages
French (fr)
Other versions
CA2617476C (en
Inventor
Jeffrey Craig Rowlands
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CMTE Development Ltd
Original Assignee
Individual
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
Priority claimed from AUPQ3846A external-priority patent/AUPQ384699A0/en
Priority claimed from AUPQ6348A external-priority patent/AUPQ634800A0/en
Priority claimed from AUPQ7400A external-priority patent/AUPQ740000A0/en
Priority claimed from AUPR0067A external-priority patent/AUPR006700A0/en
Application filed by Individual filed Critical Individual
Priority claimed from CA002394782A external-priority patent/CA2394782C/en
Publication of CA2617476A1 publication Critical patent/CA2617476A1/en
Application granted granted Critical
Publication of CA2617476C publication Critical patent/CA2617476C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • E02F9/264—Sensors and their calibration for indicating the position of the work tool
    • E02F9/265—Sensors and their calibration for indicating the position of the work tool with follow-up actions (e.g. control signals sent to actuate the work tool)
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/48—Drag-lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

A large electric dragline having a housing (35) and boom (37) is provided with spaced apart in-line sheaves (34) and (36) at boom point to separate hoist ropes (31) and (32) which are led to the front and rear of bucket (30) respectively. Differential hoist rope control allows accurate and continuous adjustment of the bucket carry angle during all modes of operation. Also described is a computer control system giving continuous accurate control of carry angle by differential hoist rope operation, with manual selection of mode of operation.

Claims (9)

1. A control system for a dragline of the type having a rotatable support mounted on a base, a boom assembly projecting outwardly from the support and rotatable therewith, and a bucket suspended from the boom assembly by adjustable hoist ropes and controllable by adjustable drag ropes extending from the support to the bucket, therebeing at least two adjustable hoist ropes of which the first is operatively connected to a front section of the bucket and the second is operatively connected to a rear section of the bucket, each hoist rope being actuated by hoisting gear arranged to alter the angle of inclination of the bucket in a vertical plane by differential movement of one hoist rope relative to the other, the control system using a computer to control the relative movement of the first and second hoist ropes via the hoisting gear, to maintain the bucket in a desired angle of inclination for a mode of dragline operation selected by an operator.
2. A control system for a dragline as claimed in claim 1 wherein, in one or more of the selected modes of operation, the computer controls the desired angle of operation continuously throughout that mode.
3. A control system for a dragline as claimed in claim 2 wherein said one or more selected modes of operation are selected from the group comprising digging, carrying, and cleaning modes.
4. A control system for a dragline as claimed in any one of claims 1 to 3 wherein the computer is used to limit the rates of dynamic transition that the hoisting gear may apply.
5. A control system for a dragline as claimed in claim 4 wherein the dynamic transition occurs during a change in the mode of operation.
6. A control system for a dragline as claimed in any one of claims 1 to 5 when arranged to allow the operator to control movement of the bucket relative to the boom assembly and housing.
7. A control system for a dragline as claimed in claim 6 wherein the control system is arranged to allow the operator to control movement of the bucket relative to the boom assembly and housing only within preset safe operating parameters.
8. A control system for a dragline as claimed in any one of claims 1 to 7 wherein the modes of dragline operation selected by the operator can include any one or more of chopping, digging, disengaging, carrying, dumping and cleaning modes.
9. A control system for a dragline as claimed in any one of claims 1 to 8 wherein the dragline includes at least two boom point sheaves located at or near the distal end of the boom assembly, spaced apart from each other by a fixed distance such that the first said sheave, the first said hoist rope being entrained over the first sheave and the second said hoist rope being entrained over the second sheave.
CA2617476A 1999-11-03 2000-10-31 Dragline bucket rigging and control apparatus Expired - Lifetime CA2617476C (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
AUPQ3846 1999-11-03
AUPQ3846A AUPQ384699A0 (en) 1999-11-03 1999-11-03 Dragline bucket rigging and control apparatus
AUPQ6348 2000-03-20
AUPQ6348A AUPQ634800A0 (en) 2000-03-20 2000-03-20 Dragline bucket rigging and control apparatus
AUPQ7400 2000-05-10
AUPQ7400A AUPQ740000A0 (en) 2000-05-10 2000-05-10 Dragline bucket rigging and control apparatus
AUPR0067A AUPR006700A0 (en) 2000-09-12 2000-09-12 Dragline bucket rigging & control apparatus
AUPR0067 2000-09-12
CA002394782A CA2394782C (en) 1999-11-03 2000-10-31 Dragline bucket rigging and control apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002394782A Division CA2394782C (en) 1999-11-03 2000-10-31 Dragline bucket rigging and control apparatus

Publications (2)

Publication Number Publication Date
CA2617476A1 true CA2617476A1 (en) 2001-05-10
CA2617476C CA2617476C (en) 2012-06-19

Family

ID=39367120

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2617476A Expired - Lifetime CA2617476C (en) 1999-11-03 2000-10-31 Dragline bucket rigging and control apparatus

Country Status (1)

Country Link
CA (1) CA2617476C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009152561A1 (en) * 2008-06-16 2009-12-23 Commonwealth Scientific And Industrial Research Organisation Method and system for machinery control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009152561A1 (en) * 2008-06-16 2009-12-23 Commonwealth Scientific And Industrial Research Organisation Method and system for machinery control

Also Published As

Publication number Publication date
CA2617476C (en) 2012-06-19

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20201102