WO2005024342A1 - Laser alignment system - Google Patents
Laser alignment system Download PDFInfo
- Publication number
- WO2005024342A1 WO2005024342A1 PCT/AU2004/001220 AU2004001220W WO2005024342A1 WO 2005024342 A1 WO2005024342 A1 WO 2005024342A1 AU 2004001220 W AU2004001220 W AU 2004001220W WO 2005024342 A1 WO2005024342 A1 WO 2005024342A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser
- clamp
- base
- adjustment mechanism
- alignment system
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000008859 change Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000012858 resilient material Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
- E21D9/004—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines using light beams for direction or position control
Definitions
- the present invention relates to a laser alignment system of the type used for marking a line or grade for a tunnel or channel in mining or civil construction.
- a laser When excavating tunnels particularly tunnels of considerably length, it is common to use a laser to assist in directing the excavation in terms of direction and/or grade.
- the laser is typically mounted on a side wall of the tunnel .
- a chain is suspended from a back of the tunnel in line with the laser beam so that the beam projects onto the chain at a particular point on the chain. This point is marked with paint or some other type of marker.
- the chain is then swung out of the way of the laser beam and attached to a side wall of the tunnel. From time-to-time when it is desired to re-check the alignment of the beam, the chain is detached from the side wall and freely suspended. If the laser beam is in correct alignment then it will again project on the point previously marked on the chain. If the beam does not strike that point it may be concluded that the beam has been moved out of alignment. However it may also be the case that the chain is not suspended along exactly the same line along which it lay when the point was originally marked on the chain. Accordingly there is some uncertainty as to whether or not the laser is actually correctly aligned.
- the present invention was developed to provide an alternate laser alignment system.
- a laser alignment system comprising:
- a body housing a laser system emitting at least one laser beam
- the mounting comprising a course alignment adjustment mechanism allowing said body to be moved about a point and a fine alignment adjustment mechanism the fine alignment adjustment mechanism operable to adjust the position of the point.
- the course alignment adjustment mechanism includes a ball to which the body is connected and a clamp for selectively clamping and releasing the ball.
- the fine alignment adjustment mechanism comprises a base and at least one member coupling the base to the clamp, the member operable to change the position of the clamp relative to the base.
- the fine alignment adjustment mechanism comprises a resilient member acting to bias the clamp away from the base.
- the fine alignment adjustment mechanism comprises two members coupling the base to the clamp each of the members operable to change the position of the clamp relative to the base.
- the fine alignment adjustment mechanism comprises three members coupled between said base and said clamp, the members spaced about the resilient member and operable to change the position of the clamp relative to the base.
- each of the members is threadingly engaged at at least one end to one of the base and the clamp whereby screwing of any member causes the clamp to move relative to the base.
- the laser system emits at least two laser beams in mutually orthogonal directions.
- the alignment apparatus further comprises a control circuit for controlling the laser system, the control circuit incorporating a receiver circuit for receiving a control signal transmitted from a remotely located transmitter.
- control circuit further comprises an electrical power storage device.
- control circuit further comprises a timer for turning the laser system ON for a predetermined time upon receipt of the control signal and subsequently turning the laser system OFF after said predetermined time.
- control circuit is disposed within the body.
- control circuit is physically separate from the body, but is electrically connectable to the laser system.
- Figure 1 is a side view of an embodiment of the laser alignment system
- Figure 2 is an exploded view of a mounting incorporated in the alignment system
- Figure 3 is a plan view of a socket member of the alignment system.
- Figure 4 is an exploded view of a laser housing incorporated in the alignment system
- Figure 5 illustrates the use of an embodiment of the laser alignment system
- Figure 6 is a schematic representation of a further embodiment of the laser alignment system.
- an alignment laser system 10 in accordance with an embodiment of this invention comprises a body 12 housing a laser system emitting at least one, though most preferably three, laser beams 14a, 14b and 14c; and a mounting 16 to which the body 12 is connected.
- the mounting 16 comprises a course alignment adjustment mechanism 18 allowing the body 12 to be moved about a point 20, and a fine alignment adjustment mechanism 22 for adjusting the position of the point 20.
- the course alignment adjustment mechanism 18 comprises a ball 24 which is formed with an integral neck 26 and planer flange 28.
- the ball 24 is connected to the body 12 by three screws 30 (see Figure 3) that are received in holes 32 formed in the flange 28.
- a clamp 34 selectively clamps and releases the ball 24.
- the mechanism 18 is essentially in the form of a releasable ball joint, with the point 20 at the geometric centre of the ball 24.
- the clamp 34 comprises an outer locking case 36 that has an opening 38 at one end through which the neck 26 and flange 28 extend. The opening 38 is of a diameter smaller than the diameter of the ball 24.
- the clamp 34 also includes a socket member 40 that is housed within the locking case 36 and has a recess 42 for seating the ball 24. An upper end of the member 40 is formed with a diametrically extending channel 44 so that the upper portion of the member 44 is effectively bifurcated (see Figure 3) .
- a transverse hole 46 is formed in the member 40 and has a first length 48 of a first inner diameter and a second length 50 of a smaller inner diameter. Its sheath 52 is seated within the portion 48.
- a locking screw 54 passes through a hole 56 formed in the side of the locking case 36 and received within the sheath 52 and extends into and threadingly engages the portion 50 of the hole 46. Turning the locking screw 54 in one direction has the effect of squeezing the bifurcation about the ball 24 thereby preventing it from moving within the recess 42 and clamping it into position. Turning of the screw 54 in an opposite direction releases the bifurcation allowing the ball 24 to move.
- the locking case 36 is closed by a base plate 58 that is screwed to a peripheral flange 60 of the locking case 36 by screws 62.
- the fine alignment adjustment mechanism 22 includes a base 64 in the form of a rectangular plate and at least one, in this embodiment three, members 66 that couple the base 64 to the clamp 34 (via the base plate 58) .
- the members 66 are in the form of threaded shafts each of which is provided with an intermediate adjustment wheel 67 that can be grabbed by a persons hand to rotate the members 66 about their longitudinal axis and thus screw the members 66 into and out of the base plate 58.
- the members 66 are positioned at the corners of an imaginary equilateral triangle.
- a resilient member in the form of a spring 68 acts to bias the clamp 34 away from the base 64.
- the resilient member can be in the form of a block of resilient material such as rubber.
- each member 66 sits in a corresponding hole 70 formed in the base 64 while their opposite ends 71 threadingly engage corresponding holes 72 in the base plate 58.
- the members 66 are passed through the holes 70 in the plate 64 and the wheels 67 then screwed onto and fixed to the members 66.
- the members 66 are then screwed into the holes 72 so that their opposite ends 74, each of which include a transverse hole 76, protrudes from the base plate 58.
- Split pins 78 are inserted in the holes 76 to prevent the members 66 from being withdrawn from the holes 72.
- the body 12 comprises a main cylindrical housing 80 having a first compartment 82 at one end, a second compartment 84 at an opposite end and a substantially solid portion 86 between the compartments 82 and 84.
- the compartment 82 houses a battery 88 for powering lasers 90a, 90b and 90c.
- This compartment is closed by a screw cap 94 that engages a thread 96 formed on an inner circumferential surface of the housing 80 at the end adjacent the compartment 82.
- the cap 94 is provided with three holes 98 which receive the screws 30 which attach the body 12 to the mounting 16 and in particular the ball 24.
- the portion 86 is provided with a longitudinally extending cylindrical cavity 100, a first radial cavity 102 that extends between the cavity 100 and opens onto an outer surface 104 of the body 12 and a further radial cavity 106 that also extends from the cavity 100 to the outer surface 104 but is perpendicular to the cavities 100 and 104.
- the laser 90b is held within the cavity 106 while the laser 90c is held within the cavity 102.
- Lens covers 108 and 110 seal the lasers 90b and 90c into cavities 106 and 102 respectively.
- a cylindrical insert 112 is housed within the compartment 84 and houses a circuit motherboard 92 and the laser 90a.
- the laser 90a passes centrally through a hole formed in a plate 93 supporting the motherboard 92.
- a back end of the laser 90a is received within the cavity 100.
- the insert 112, motherboard 92 and laser 90a are held within the compartment 84 by a cap 118 that is formed with a thread on its outer circumferential surface that engages a thread 119 formed on an inner circumferential surface of the body 12 in compartment 84.
- the end cap 118 is formed with an internal shoulder 120 that seats a lens 122 through which the laser beam 14a from laser 90a passes.
- the lens 122 is held in place against the shoulder 120 by an annular ring 124.
- the cap 118 When the cap 118 is screwed into the body 12, it is screwed down to a position where it holds the insert 112 against the portion 86 with the ring 124 abutting an opposite side of the insert 112 and clamping the lens 122 against the shoulder 120.
- Power from the battery 88 held within the compartment 82 is supplied to the lasers 90a, 90b and 90c and the motherboard 92 via wires (not shown) which pass through a hole 126 formed in an end of the cavity 100 adjacent the compartment 82.
- the motherboard 92 will include a control circuit for switching the lasers 90a, 90b and 90c ON and OFF, and a receiver circuit for receiving an electromagnetic signal from a remote transmitter to control the control circuit. This allows a user to turn all the lasers 90 ON and OFF remotely using a hand-held transmitter (not shown) .
- the control circuit may include a timer for turning the lasers 90 ON for a predetermined time upon receipt of the control circuit and subsequently turning the lasers 90 OFF after that time.
- the laser beam 14a may be considered as the main laser beam and is used for providing an indication of line and/or grade of a tunnel being excavated.
- the laser 90b and 90c can be of lower power and are used for checking the alignment of the laser beam 14a.
- Figure 5 depicts the system 10 mounted via a bracket 126 to a side wall 128 of a tunnel 130.
- the body 12 is orientated via the course alignment adjustment mechanism 18 and fine alignment adjustment mechanism 22 so that the beam 14a extends along a desired line and grade of the tunnel 130.
- the points 132b and 132c where the laser beams 14b and 14c respectively strike the inner surface of the tunnel 130 are marked, for example with paint.
- the laser 90a which produces the beam 14a can be turned ON and OFF remotely when desired or required to ensure that the tunneling is progressing along the correct line and grade.
- an operator checks that beams 14b and 14c strike the points 132b and 132c. If they do, then beam 14a can be taken as denoting the correct line and grade of the tunnel. In the event that one or both of the beams 14b and 14c do not strike the points 132b and 132c respectively it is assumed that the laser beam 14a is out of alignment. In such an instance, an operator can manipulate the course and fine alignment adjustment mechanisms 18 and 22 to place the beams 14b and 14c back onto the points 132b and 132c thereby re-aligning the beam 14a along the correct line and grade.
- FIG. 6 illustrates a further embodiment of the laser alignment system 10 where features which correspond to features of the earlier embodiments are denoted by the same reference numbers.
- the laser alignment system 10 depicted in Figure 6 is functionally identical to that of Figure 1 however has the following structural variations.
- the adjustment wheels 67 are now formed at an end of the shafts 66 on a side of the base plate 64 distant the base plate 58. This allows a scaling down in size of the system 10 while allowing a user to still physically hold and turn the adjustment wheels 67. Having the adjustment wheels 67 between the plates 58 and 64 as in Figure 1 can make gripping the wheels 67 problematic in smaller models of the system 10.
- a bracket (not shown) is used to attach the base plate to a structure such as the wall of a tunnel in a manner to allow a user to easily access the wheels 67.
- the resilient member 68 is now in the form of a block of resilient material such as rubber instead of being in the form of a spring.
- the final significant variation in the embodiment shown in Figure 6 is that the battery 88 and motherboard 92 have been taken out of the body 12 and placed in a separate removable power and control unit 140 which is demountably supported on the base plate 58.
- Power is provided to the lasers 14 from the unit 140 via an electrical plug and socket arrangement 142 the plug being at the end of an electrical cable extending from the power control unit 140, and a socket being at the end of an electrical cable extending from the body 12.
- a hand-held transmitter 144 is used to send control signals 146 which are received by the receivers circuit on the motherboard in the unit 140 and used to provide power to the lasers 14 via the plug and socket 142.
- the body 12 is substantially shorter than the embodiment depicted in Figure 1 and is a simpler construction and internal form than that shown in Figure 4 as it now essentially only houses the three lasers 90a, 90b and 90c for producing the laser beams 14a, 14b and 14c.
- the lasers 90b and 90c are offset from each other so that their respective beams do not lie on the same plane. This embodiment allows a potential reduction in overall cost where the user may require multiple systems 10 at different spaced apart locations but that may not require to be operated simultaneously. In this way, a single power control unit 140 may be used for multiple spaced apart systems 10.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004270764A AU2004270764A1 (en) | 2003-09-08 | 2004-09-08 | Laser alignment system |
CA002540719A CA2540719A1 (en) | 2003-09-08 | 2004-09-08 | Laser alignment system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003904897A AU2003904897A0 (en) | 2003-09-08 | An alignment laser | |
AU2003904897 | 2003-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024342A1 true WO2005024342A1 (en) | 2005-03-17 |
Family
ID=34230086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2004/001220 WO2005024342A1 (en) | 2003-09-08 | 2004-09-08 | Laser alignment system |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA2540719A1 (en) |
WO (1) | WO2005024342A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI408303B (en) * | 2011-08-12 | 2013-09-11 | Nat Univ Chung Hsing | Orientator |
RU2566367C1 (en) * | 2014-08-01 | 2015-10-27 | Федеральное Государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики - ФГУП "РФЯЦ-ВНИИЭФ" | Automatic adjustment of optical system with help of markers |
US11287258B2 (en) | 2019-01-16 | 2022-03-29 | Milwaukee Electric Tool Corporation | Laser projection tools and mounting accessories |
US11385055B2 (en) | 2019-07-23 | 2022-07-12 | Milwaukee Electric Tool Corporation | Laser emitter with a modular storage unit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643844A (en) * | 1948-07-12 | 1953-06-30 | Henry C Nette | Vernier control and pivot mounting for transits and like instruments |
US5575073A (en) * | 1994-02-03 | 1996-11-19 | Stabila Messgerate Gustav Ullrich Gmbh & Co. Kg | Apparatus for setting a horizontal plane by means of a level |
EP1136789A2 (en) * | 2000-03-07 | 2001-09-26 | RIWA TEC GmbH, Messgeräte Handelsgesellschaft | Console for spirit levels, specifically for laser spirit levels and for rotation laser devices |
DE10033873A1 (en) * | 2000-07-12 | 2002-01-31 | Walter Keller | Automatic area and space profile surveying method for e.g. architectural construction, involves controlling stepwise horizontal and vertical movements of laser measuring device and transmitting measurement data to PC |
-
2004
- 2004-09-08 WO PCT/AU2004/001220 patent/WO2005024342A1/en active Application Filing
- 2004-09-08 CA CA002540719A patent/CA2540719A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643844A (en) * | 1948-07-12 | 1953-06-30 | Henry C Nette | Vernier control and pivot mounting for transits and like instruments |
US5575073A (en) * | 1994-02-03 | 1996-11-19 | Stabila Messgerate Gustav Ullrich Gmbh & Co. Kg | Apparatus for setting a horizontal plane by means of a level |
EP1136789A2 (en) * | 2000-03-07 | 2001-09-26 | RIWA TEC GmbH, Messgeräte Handelsgesellschaft | Console for spirit levels, specifically for laser spirit levels and for rotation laser devices |
DE10033873A1 (en) * | 2000-07-12 | 2002-01-31 | Walter Keller | Automatic area and space profile surveying method for e.g. architectural construction, involves controlling stepwise horizontal and vertical movements of laser measuring device and transmitting measurement data to PC |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI408303B (en) * | 2011-08-12 | 2013-09-11 | Nat Univ Chung Hsing | Orientator |
RU2566367C1 (en) * | 2014-08-01 | 2015-10-27 | Федеральное Государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики - ФГУП "РФЯЦ-ВНИИЭФ" | Automatic adjustment of optical system with help of markers |
US11287258B2 (en) | 2019-01-16 | 2022-03-29 | Milwaukee Electric Tool Corporation | Laser projection tools and mounting accessories |
US11781865B2 (en) | 2019-01-16 | 2023-10-10 | Milwaukee Electric Tool Corporation | Laser projection tools and mounting accessories |
US11385055B2 (en) | 2019-07-23 | 2022-07-12 | Milwaukee Electric Tool Corporation | Laser emitter with a modular storage unit |
Also Published As
Publication number | Publication date |
---|---|
CA2540719A1 (en) | 2005-03-17 |
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