EP2021730A1 - Tilting alarm for a mobile machine - Google Patents

Tilting alarm for a mobile machine

Info

Publication number
EP2021730A1
EP2021730A1 EP07718883A EP07718883A EP2021730A1 EP 2021730 A1 EP2021730 A1 EP 2021730A1 EP 07718883 A EP07718883 A EP 07718883A EP 07718883 A EP07718883 A EP 07718883A EP 2021730 A1 EP2021730 A1 EP 2021730A1
Authority
EP
European Patent Office
Prior art keywords
alarm system
roller
tilt angle
tilting
alarm
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.)
Withdrawn
Application number
EP07718883A
Other languages
German (de)
French (fr)
Other versions
EP2021730A4 (en
Inventor
John Ibrahim
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.)
Conplant Pty Ltd
Original Assignee
Conplant 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
Priority claimed from AU2006902521A external-priority patent/AU2006902521A0/en
Application filed by Conplant Pty Ltd filed Critical Conplant Pty Ltd
Publication of EP2021730A1 publication Critical patent/EP2021730A1/en
Publication of EP2021730A4 publication Critical patent/EP2021730A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/02—Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/282—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit
    • E01C19/283—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit pedestrian-controlled, e.g. with safety arrangements for operator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum

Definitions

  • This invention relates to a tilting alarm system for a mobile machine having a prime mover and an articulated component such as a vibratory compaction roller.
  • a typical smooth drum, single drum vibratory roller consists of a prime mover having a forwardly mounted vibratory drum roller which is supported by a frame with its axis of rotation transverse to the direction of movement of the prime mover.
  • the drum frame is pivotally mounted on the prime mover to allow limited pivotal movement of the frame about the axis of movement of the prime mover.
  • the pendulum switch may be mounted at or near the articulation point of the roller.
  • a tilting alarm system for a machine having a prime mover and an articulated roller
  • the alarm system comprising a pendulum switch adapted to sense the transverse tilt angle of the roller with respect to the prime mover and an audible and/or visual alarm adapted to be activated by the pendulum switch when the tilt angle exceeds a predetermined value.
  • the roller is a vibratory roller and the tilt alarm system includes a vibration interrupter relay which de-energises the vibratory system when the tilt angle exceeds a second predetermined value that is larger than the first predetermined value.
  • both the audible and/or visual alarm as well as the vibration interrupter relay are connected to adjustable time delays to allow for short bumps and sways.
  • Fig. 1 is a schematic diagram of a tilting alarm system according to one embodiment of the invention. MODES FOR CARRYING OUT THE INVENTION
  • the tilting alarm system 10 of one embodiment of the invention includes a level pendulum switch 11 having outwardly directed arms 12 and 13 each of which has inwardly directed operating fingers 14 and 15 respectively.
  • the pendulum switch 11 is pivotally mounted about axis 16. When the pendulum switch 11 is in its normal or neutral position as shown in Fig. 1 where the roller (not shown) is not tilted, the operating fingers 14 and 15 are clear of inductive pick ups 17 and 18 respectively.
  • the inductive pick ups 17 and 18 are electrically connected to a maximum oscillation variable timer relay 19 which in turn is connected to an alarm and warning light relay 20 that is adapted to energise the warning light 21 and/or the audible alarm 22.
  • a central inductive pick up 23 which operates the vibration interrupt circuit.
  • the central pick up 23 is electrically connected to the vibration cut-out variable timer relay 24 which in turn is connected to the vibration interrupt relay 25.
  • the pendulum switch 11 is mounted at the articulation point of the vibratory roller to sense the transverse tilt angle of the front section of the vibratory roller.
  • the angle of tilt is sensed in two stages. In the first stage, a tilt angle between 5° to 15° (depending on the model of the roller) activates the audible alarm 22 and the warning light 21 mounted adjacent the operator to warn the operator that the front of the roller has reached a dangerous tilt angle. In the second stage, when the tilt angle is between 5° to 15° (depending on the model of roller), the vibration interrupt relay 24 (which is wired into the roller vibration circuit) shuts down the vibration mechanism of the roller reducing the slide effect of the slope to further warn the operator of a critical tilt angle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Road Paving Machines (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

A tilting alarm system (10) for a machine having a prime mover and an articulated component such as a roller includes a pendulum switch (11) adapted to sense the transverse tilt angle of the roller with respect to the prime mover and an audible and/or visual alarm (20, 21, 22) adapted to be activated by the pendulum switch when the tilt angle exceeds a predetermined value.

Description

TILTING ALARM FOR A MOBILE MACHINE TECHNICAL FIELD
This invention relates to a tilting alarm system for a mobile machine having a prime mover and an articulated component such as a vibratory compaction roller. BACKGROUND ART
For the sake of convenience, the invention will be described in relation to a smooth drum, vibrating single drum compaction roller but it is to be understood that the invention is not limited thereto as the tilting alarm system may be used in other circumstances where there is a need to warn an operator of the possibility of rollover.
A typical smooth drum, single drum vibratory roller consists of a prime mover having a forwardly mounted vibratory drum roller which is supported by a frame with its axis of rotation transverse to the direction of movement of the prime mover. The drum frame is pivotally mounted on the prime mover to allow limited pivotal movement of the frame about the axis of movement of the prime mover.
There is a need for an alarm system adapted to warn of an minimise the possibility of rollover of the compaction roller should the angle of tilt of the roller exceed a predetermined value. The pendulum switch may be mounted at or near the articulation point of the roller. SUMMARY OF THE INVENTION
According to one aspect of the invention there is provided a tilting alarm system for a machine having a prime mover and an articulated roller, the alarm system comprising a pendulum switch adapted to sense the transverse tilt angle of the roller with respect to the prime mover and an audible and/or visual alarm adapted to be activated by the pendulum switch when the tilt angle exceeds a predetermined value.
In a preferred form of the invention, the roller is a vibratory roller and the tilt alarm system includes a vibration interrupter relay which de-energises the vibratory system when the tilt angle exceeds a second predetermined value that is larger than the first predetermined value.
It is preferred that both the audible and/or visual alarm as well as the vibration interrupter relay are connected to adjustable time delays to allow for short bumps and sways. BRIEF DESCRIPTION OF THE DRAWING
Fig. 1 is a schematic diagram of a tilting alarm system according to one embodiment of the invention. MODES FOR CARRYING OUT THE INVENTION
As shown in Fig. 1 , the tilting alarm system 10 of one embodiment of the invention includes a level pendulum switch 11 having outwardly directed arms 12 and 13 each of which has inwardly directed operating fingers 14 and 15 respectively. The pendulum switch 11 is pivotally mounted about axis 16. When the pendulum switch 11 is in its normal or neutral position as shown in Fig. 1 where the roller (not shown) is not tilted, the operating fingers 14 and 15 are clear of inductive pick ups 17 and 18 respectively.
The inductive pick ups 17 and 18 are electrically connected to a maximum oscillation variable timer relay 19 which in turn is connected to an alarm and warning light relay 20 that is adapted to energise the warning light 21 and/or the audible alarm 22. In between the inductive pick ups 17 and 18 there is a central inductive pick up 23 which operates the vibration interrupt circuit. The central pick up 23 is electrically connected to the vibration cut-out variable timer relay 24 which in turn is connected to the vibration interrupt relay 25.
The pendulum switch 11 is mounted at the articulation point of the vibratory roller to sense the transverse tilt angle of the front section of the vibratory roller. The angle of tilt is sensed in two stages. In the first stage, a tilt angle between 5° to 15° (depending on the model of the roller) activates the audible alarm 22 and the warning light 21 mounted adjacent the operator to warn the operator that the front of the roller has reached a dangerous tilt angle. In the second stage, when the tilt angle is between 5° to 15° (depending on the model of roller), the vibration interrupt relay 24 (which is wired into the roller vibration circuit) shuts down the vibration mechanism of the roller reducing the slide effect of the slope to further warn the operator of a critical tilt angle.

Claims

CLAIMS:
1. A tilting alarm system for a machine having a prime mover and an articulated component, the alarm system comprising a pendulum switch adapted to sense the transverse tilt angle of the component with respect to the prime mover and an audible and/or visual alarm adapted to be activated by the pendulum switch when the tilt angle exceeds a predetermined value.
2. A tilting alarm system according to claim 1 wherein the articulated component is a vibratory roller and the tilt alarm system includes a vibration interrupter relay which de-energises the vibratory system when the tilt angle exceeds a second predetermined value that is larger than the first predetermined value.
3. A tilting alarm system according to claim 1 wherein both the audible and/or visual alarm as well as the vibration interrupter relay are connected to adjustable time delays to allow for short bumps and sways.
EP07718883A 2006-05-12 2007-05-11 Tilting alarm for a mobile machine Withdrawn EP2021730A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006902521A AU2006902521A0 (en) 2006-05-12 Tilting alarm for a mobile vehicle
PCT/AU2007/000636 WO2007131272A1 (en) 2006-05-12 2007-05-11 Tilting alarm for a mobile machine

Publications (2)

Publication Number Publication Date
EP2021730A1 true EP2021730A1 (en) 2009-02-11
EP2021730A4 EP2021730A4 (en) 2009-06-17

Family

ID=38693441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07718883A Withdrawn EP2021730A4 (en) 2006-05-12 2007-05-11 Tilting alarm for a mobile machine

Country Status (4)

Country Link
EP (1) EP2021730A4 (en)
AU (1) AU2007250522B2 (en)
NZ (1) NZ572954A (en)
WO (1) WO2007131272A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359777A (en) * 2011-04-04 2012-02-22 优必得节能技术(上海)有限公司 Detection device, rail train and rail locomotive for detecting the motion state of moving objects

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846781A (en) * 1973-01-10 1974-11-05 L Smith Slope indicator and roll-over warning indicator for earthmoving equipment
US3848750A (en) * 1973-02-09 1974-11-19 D Hoge Crane tip alarm
US4077132A (en) * 1977-02-22 1978-03-07 Keuffel & Esser Company Digital level indicator
DE3044485A1 (en) * 1980-11-26 1982-06-03 Losenhausen Maschinenbau AG, 4000 Düsseldorf SAFETY DEVICE ON CONSTRUCTION MACHINERY
US4682145A (en) * 1985-05-03 1987-07-21 Brawner Jr Clarence A Truck level sensing and indicating system
US4952908A (en) * 1988-06-20 1990-08-28 Navistar International Transportation Corp. Trailer stability monitor
WO1991000983A1 (en) * 1989-07-13 1991-01-24 Christopher Mark Baker Safety tilt alarm
US5532672A (en) * 1994-11-28 1996-07-02 Plazarin; James J. Vehicle level alarm
AU7141700A (en) * 1999-11-05 2001-05-10 Kenneth John Eaton Electromechanical warning device
DE102004038657A1 (en) * 2004-08-09 2006-02-23 Bomag Gmbh Device and method for determining an acceleration-independent inclination angle

Also Published As

Publication number Publication date
AU2007250522B2 (en) 2008-11-27
NZ572954A (en) 2011-12-22
WO2007131272A1 (en) 2007-11-22
EP2021730A4 (en) 2009-06-17
AU2007250522A1 (en) 2007-11-22

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Inventor name: IBRAHIM, JOHN

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