WO1989004947A1 - Outil portatif d'alignement de chassis et d'essieux - Google Patents

Outil portatif d'alignement de chassis et d'essieux Download PDF

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Publication number
WO1989004947A1
WO1989004947A1 PCT/US1988/004117 US8804117W WO8904947A1 WO 1989004947 A1 WO1989004947 A1 WO 1989004947A1 US 8804117 W US8804117 W US 8804117W WO 8904947 A1 WO8904947 A1 WO 8904947A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
vehicle
light
targets
horizontal portion
Prior art date
Application number
PCT/US1988/004117
Other languages
English (en)
Inventor
Jerald C. Fournier
Original Assignee
Axle-Tru, Inc.
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 to KR1019890701362A priority Critical patent/KR890701989A/ko
Application filed by Axle-Tru, Inc. filed Critical Axle-Tru, Inc.
Publication of WO1989004947A1 publication Critical patent/WO1989004947A1/fr
Priority to DK352989A priority patent/DK352989A/da
Priority to NO89892920A priority patent/NO892920L/no

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/275—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/16—Active or passive device attached to the chassis of a vehicle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/24—Specially developed for using with trucks or other heavy-duty vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/30—Reference markings, reflector, scale or other passive device

Definitions

  • the present invention relates to a portable apparatus for aligning the axles of a vehicle / such as a tractor or trailer, and for detecting bends, bows, twists and other irregularities in vehicle frames and other components.
  • the invention allows mechanics to repair and replace frames and other major structural components of vehicles in the field, without the aid of special purpose, precision-leveled racks and platforms.
  • the trailer will sometimes fail to properly trail the tractor because of axle misalignment. This problem generally results from the axle being misaligned such that it is not perpendicular to a fore- and-aft centerline of the frame of the trailer.
  • Similar misalignments of the rear axle(s) of the tractor can also cause problems, such as accelerated tire wear, lowered fuel economy, and increased driver fatigue.
  • U.S. Patent 3,566,476 to McWhorter uses a light projector attached on a support behind the wheel axle.
  • the projector is first directed towards a rear reference point extending from the underside of the trailer frame.
  • the projector is then tilted downwardly and the beam projected forwardly to a front reference point attached to a kingpin.
  • the beam will supposedly miss the kingpin reference point when the axle is out of alignment.
  • Both the kingpin reference point and the rear reference point are located on the centerline of the trailer frame.
  • the light projector is connected on a frame to two wheel gauges which are attached around the circumference of the tire.
  • the present invention provides an arrangement for making such repairs which is convenient and relatively inexpensive, while maintaining the required degree of precision.
  • An object of the present invention is to provide an apparatus for aligning wheel axles of and making other repairs to a vehicle, which apparatus is both accurate and simple to operate.
  • Another object of the present invention is to provide an apparatus for aligning wheel axles of and making other repairs to a vehicle, which can be used on uneven ground.
  • Yet another object of the present invention is to provide such a device which is portable and which can be used in various surroundings and under various conditions.
  • a further object of the present invention is to provide " a device which measures directly from the
  • a further object of the present invention is to provide a device for establishing a reference plane underneath the frame of a tractor or trailer so that measurements can be made between this reference plane and the vehicle, for providing an indication of irregularities in the frame of the vehicle.
  • a still further object of the present invention is to provide an apparatus for aligning the axles of a tractor which measures the alignment at different points along a line that is exactly parallel to the center axis of a wheel axle.
  • a still further object of the present invention is to provide a device which assures perpendicularity of a generated beam of light to a central axis of a support of the light source.
  • a device for establishing a reference plane with respect to a vehicle frame from which measurements relating to the vehicle can be made which includes a first target assembly attachable to the underside of the vehicle frame.
  • This first target assembly has at least two targets spaced apart on a first line which is substantially transverse to the vehicle frame.
  • the individual targets of the assembly are spaced an equal vertical distance from the underside of the frame.
  • a second target assembly, which is attachable to the underside of the vehicle frame also has at least two targets spaced apart on a second line which is substantially transverse to the vehicle frame.
  • Each of these individual ⁇ targets are also spaced the same vertical distance from the underside of the vehicle frame, and these targets are provided with openings for allowing a light beam to pass through.
  • a light source directs a beam of light through an individual target of the second target assembly toward a corresponding target on the first assembly.
  • This light source is positionable along a line that is substantially transverse to the vehicle frame.
  • An advantage of this embodiment of "the present invention is that a reference plane is established with respect to a vehicle frame by the multiple targets on the target assemblies. From this reference plane, measurements can be made to various points on the underside of the vehicle frame to detect irregularities, so that steps can be taken to correct these irregularities.
  • a light source which is positionable along a line substantially transverse to the vehicle frame, is used in combination with the multiple targets to define the reference plane beneath the vehicle so as to allow measurements to be made relative to the frame at any point.
  • a U-shaped frame having a horizontal bar and two upright portions extending from the bar at right angles thereto.
  • the upright portions include means for attaching the U-shaped frame to a central axis of the axle such that the horizontal bar is parallel to the central axis.
  • a first target assembly is attachable to an underside of the vehicle, and has at least two targets spaced apart on a first line substantially transverse to the long axis of the vehicle and spaced an equal vertical distance from the underside of the vehicle.
  • a second target assembly which is also attachable to the underside of the vehicle, has at least two targets spaced apart on a second line substantially transverse to the long axis of the vehicle.
  • the targets on the second target assembly are each spaced the same vertical distance from the vehicle underside, and are provided with openings for allowing a light beam to pass through the targets.
  • a light source for generating a beam of light, is slidably mounted on the horizontal bar of the U-shaped frame. This light source is slidably positionable to a plurality of points along the horizontal bar.
  • each of the target assemblies includes at least two targets so that the alignment can be measured at the adjusting side of the axle, as opposed to the center or stationary side of the axle. Since the axle effectively "pivots" about the stationary side, any deviation from perfect alignment at the adjusting side will be greater than at the center and still greater than at the stationary side, and thus, easier to detect and correct.
  • a perpendicularity checking device assures that the beam of light produced by the light source is perpendicular to the horizontally extending bar. This eliminates error which can be introduced into the measurements if the light beam produced by the source is not truly perpendicular to the horizontal bar of the frame which supports the light. Deviations from a truly perpendicular arrangement can result from normal tolerances in the light source support, especially in such supports which provide for horizontal and/or vertical movements of the light source. In order to allow for such movements, clearances must be provided in the mechanical parts of the support, and these clearances can result in variance of the light beam from a truly perpendicular orientation with respect to the horizontal bar of the frame.
  • the light source itse-lf may also be a source of error in this regard.
  • the light source which is preferably used in this and other wheel alignment systems is a relatively low priced, low powered laser.
  • the laser is mounted in a relatively lightweight frame which is subsequently attached (for example, by screws or bolts) to the underlying support frame.
  • the inventor has determined that the light beam produced by the laser is not carefully aligned with the associated enclosure, including the brackets or holes provided for attachment to an underlying support, so that replacement of the laser assembly in such an aligning apparatus may introduce significant errors into measurements subsequently made by the apparatus.
  • an apparatus which includes a U-shaped frame having a horizontal bar and two upright portions extending from the bar at right angles thereto. These upright portions include means for attaching the U-shaped frame to a central axis of the wheel axle so that the horizontal bar is parallel to the central axis.
  • the apparatus also includes a frame squaring plate which is attachable to the frame of the vehicle. This squaring plate has at least two reference portions which, in one preferred embodiment, are upright bars. The distances from each of these reference portions to the horizontal bar is measured and compared to determine axle alignment.
  • These preferred embodiments provide a portable apparatus which does not need a light source, yet which still provides an accurate measure of wheel axle alignment. Accurate measurement is assured through the use of a U-shaped frame which has a horizontal bar that is exactly parallel to the central axis of the axle being measured, and which is brought into relatively close proximity to the reference portions of the frame squaring plate.
  • Figure 1 is a perspective view of a U-shaped frame constructed in accordance with a preferred embodiment of the present invention.
  • Figure 2 is a front view of a rear target assembly constructed in accordance with a preferred embodiment of the present invention.
  • Figures 2a and 2b show additional detail of the portion of the rear target assembly which is used to suspend the assembly from a vehicle frame.
  • Figure 3 is a front view of a front target assembly constructed in accordance with a preferred embodiment of the present invention.
  • Figure 4 is a perspective view showing a portion of
  • Figure 5 is a schematic, perspective view of the arrangement of the apparatus of Figures 1-3 attached to a trailer frame.
  • Figure 6 is a side view of a trailer with a reference plane established underneath.
  • Figure 7 illustrates a manner of using the apparatus of the present invention.
  • Figure 8 is a top view of a squaring frame constructed in accordance with a preferred embodiment of the present invention.
  • Figure 9 shows the squaring frame of Figure 8 being used with the frame of Figure 1 to check the alignment of a vehicle axle without a light source.
  • Figure 10 is a top view of a perpendicularity checking device constructed in accordance with a preferred embodiment of the present invention, mounted on the frame of Figure 1.
  • Figure 11 is a side view of the apparatus shown in Figure 10.
  • the major components of a preferred embodiment of the apparatus are shown separately in Figures 1-3, as attached and used to perform measurements on a vehicle in Figures 4-7.
  • the first major component of the apparatus is shown in Figure 1 and is a U-shaped frame 10 upon which is mounted a light projector, such as a laser 12.
  • Laser 12 is slidably mounted on frame 10, and is adjustable in the horizontal direction between stops 14 and 16. Stops 14 and 16 are spaced approximately five feet apart which allows laser 12 to define a reference plane which projects beyond the frame rails of most vehicles (frame rails are typically spaced on 32" - 42" centers) .
  • a hinge 18 on which laser 12 is mounted allows laser 12 to be adjusted (tilted) in the vertical direction.
  • Rear target assembly 32 is shown in Figure 2 and comprises the next major component of the apparatus. Upwardly extending arms 36 and 38 are horizontally adjustable by means of double rack assembly 44. Racks 45 are adjustable by means of a knob 46 (dashed lines) on the rear side of the assembly which is connected to gear 47 (dashed lines) positioned between racks 45.
  • Blocks 37 and 39 which have a long axis extending into the paper in the Figure 2 illustration, are provided to assure squareness of target assembly 32 to the vehicle frame.
  • Blocks 37 and 39 are preferably attached to upright arms 36 and 38 by two rolled pins, one of which is allowed to project approximately 1/4 - 1/2 inch from the blocks to provide a support surface (i.e., the underside of the proj.ecting pin) for suspending target assembly 32 from the vehicle frame (see Figure 2(b)).
  • Racks 45 are adjusted to press the vertical surfaces of blocks 37 and 39 tightly against a vertical surface of the vehicle frame, causing target assembly 32 to "self-adjust" to a perpendicular relationship with the longitudinal axis of the vehicle frame.
  • a vertical bar 50 extends downwardly from rack assembly 44 and is vertically adjusted by knob 51. At the bottom of vertical bar 50 is a triangular plate 52. Attached to triangular plate 52, at a right angle to vertical bar 50, is horizontal bar 54. At the ends of horizontal bar 54 are targets 56 and 58 which have slots 60 and 62 therein.
  • Target assembly 70 includes a vertical bar 72 extending downwardly from a first horizontal bar 84.
  • Horizontal bar 84 is connected at a right angle to the top of vertical bar 72.
  • a second horizontal bar 75 is connected at a right angle to the bottom of vertical bar 72 by triangle 74. Attached at both ends of second horizontal bar 75 are targets 76 and 78.
  • Horizontal bar 75 is vertically adjustable to various positions and is held in that position by a clamping knob 79.
  • a kingpin attachment device 80 for attaching front target assembly 70 to the kingpin of a trailer is attached to vertical member 82.
  • Member 82 is pivotably connected to horizontal bar 84 and can be adjusted, relative to bar 84, by set screws 86 and 88 which are mounted to and extend through a portion of vertical bar 72.
  • This arrangement allows horizontal bar 84, and consequently horizontal bar 75, to be adjusted so as to be parallel to the kingpin plate when target assembly 70 is suspended from the kingpin. It is also contemplated to provide means for attaching this target assembly to a part of the frame other than the kingpin, such as the frame rails or the kingpin plate, although attachment to the kingpin is preferred.
  • FIG. 4-7 The arrangement for attaching and using target assemblies 32 and 70 and U-shaped frame 10 with a truck frame is shown in Figures 4-7.
  • the U-shaped frame 10 is attached directly to the center of the wheel axle at its upright portions 20 and 22 by centering elements 28 and 30, as shown in Figure 4. Centering elements 28 and 30 extend through upright portions 20 and 22 at right angles.
  • Centering elements 28 and 30 are at right angles to upright portions 20 and 22, and upright portions 20 and 22 are at right angles to horizontal bar 17. Thus, it is readily apparent that attachment of centering elements 28 and 30 to the center axis of the wheel axle will assure that horizontal bar 17 will be in a parallel relationship to the center axis of the wheel axle. Due to the rigidity of U-shaped frame 10, horizontal bar 17 will maintain this parallel relationship. It is important to note that centering elements 28 and 30 are attached directly to the center axis of the wheel axle. This is best accomplished by locating the conically-shaped depressions in the ends of the axle which are used to center the axle in a lathe during the axle manufacturing operation.
  • Rear target assembly 32 is preferably attached to the frame rails of the vehicle.
  • Racks 44 axe extended so that the upwardly extending arms 36 and 38 will support target assembly 32.
  • Blocks 37 and 39 are positioned to abut the frame rails so that targets 56 and 58 will be aligned along a line which is transverse to the trailer frame.
  • front target assembly 70 is attached to the kingpin plate by attachment device 80 and its dual targets 76 and 78 are also aligned along a line transverse to the trailer frame. This alignment may be accomplished by measuring and comparing the distances from each end of horizontal bar 84 to the front end of the kingpin plate or trailer frame.
  • the horizontal distance between targets 56 and 58 and between targets 76 and 78 are exactly equal.
  • the vertical distances between each of the target pairs and the underside of the frame are also adjusted so that the respective targets lie in a plane which is parallel to the plane of the vehicle frame.
  • the back rail of the trailer box and the kingpin plate can be used as reference points for attaching the target assemblies since, during construction of the trailer frame, the kingpin plate and the back rail are placed in a jig and squared to each other, followed by construction of the rest of the trailer frame around these elements. In this way, a constant and desired spatial orientation between the kingpin plate and the back rail is assured, and thus, the alignment of the targets along lines transverse to the trailer frame and the presence of the four targets in a common plane are also assured.
  • Figure 5 shows the establishment of a reference plane A by the use of the apparatus of the present invention.
  • Laser 12 moves between stops 14 and 16 to a first position such that the light beam will project through target 56 of rear target assembly 32 onto target 76 of front target assembly 70.
  • Laser 12 is then moved along horizontal bar 17 so that the light beam will project through target 58 onto target 78 of front target assembly 70. Since all four targets are positioned in the same plane, which is preferably parallel to the plane defined by the kingpin plate, reference plane A will also be parallel to the kingpin plate.
  • Adjustable support elements 24 and 26 can be used to correct any angular inclination of horizontal bar 17 which might cause angling of the plane defined by laser 12 as it moves along horizontal bar 17.
  • Figure 6 illustrates the means for checking the truck frame for ⁇ irregularities with the use of established reference plane A.
  • a simple gauge is held against the bottom of the frame so that the light projected from laser 12 will impinge upon it, and the point of impingement on the gauge is noted. This is illustrated, by way of example, at point B in Figure 6.
  • the gauge is then moved to point C and the measurement is repeated. If the truck frame has been bowed, light from laser 12 will impinge upon a different location on the gauge, and the extent and degree of the irregularity (i.e., the bow) can be noted. Similar measurements relative to the reference plane will detect the degree of arch in the trailer floor and the degree of bend, twist or other irregularities in the frame elements of the vehicle. Measurements from the reference plane can also be used to locate and replace undercarriage components with precision and accuracy.
  • the rear axles on a trailer unit are typically mounted in a frame arrangement to form a unit which is referred to as the slider.
  • This unit rides on rails underneath the rear of the trailer box, and can be positioned in several for and aft positions depending upon the weight and distribution of cargo in the trailer box.
  • One end of the axle arrangement is typically mounted in a relatively rigid and fixed manner to one side of the slider, although a certain amount of pivotable movement around the fixed mount is contemplated.
  • the other side of the axle is mounted to the slider by means of an adjusting mechanism, such as a turn buckle, to allow that side of the axle to be moved in the for and aft direction. This allows a means for adjusting the transversely oriented axle axis relative to the longitudinal axis of the trailer.
  • U-shaped frame 10 is mounted directly to the centers of the respective ends of the wheel axle.
  • Horizontal bar 17 is thus parallel to the wheel axle.
  • horizontal bar 17 will also become parallel to the targets 56, 58 and 76, 78 so that when light * beam D is projected through targets 56 and 58 onto targets 76 and 78, light beam D will impinge upon the centering mark on both targets 76 and 78, thereby indicating proper alignment of the axle.
  • U-shaped frame 10 includes a perpendicularity checking attachment 110, which is illustrated in Figures 10 and 11.
  • Attachment 110 has an A-shaped frame with side legs 112 and a cross piece 113.
  • Attachment devices 114 include clamping screws 115 for clamping attachment 110 into position on horizontal bar 117.
  • a first target 116 is positioned in the center of cross piece 113 and is provided with a small opening 120 for allowing the light beam to pass through.
  • a rigid connecting piece 117 is connected to target 116.
  • a second target 118 is attached to the other end of connecting piece 117.
  • Second target 118 also has an opening 121 for allowing the light beam to pass therethrough. Openings 120 and 121 of targets 116 and 118 are aligned along a straight line which is perpendicularly aligned with an imaginary line passing through the centers of attachment devices 114.
  • attachment devices 114 are clamped in place on horizontal bar 17 by screws 115.
  • Attachment devices 114 are U-shaped brackets which are designed to fit on horizontal bar 17 and wedged into position by the clamping action of screws 115. As shown in Figure 11, the profile of each device 114 is not symmetrical. Rather, the depending portion
  • first target 116 Following positioning of attachment 110 on horizontal bar 17, the light source is positioned to shine through first target 116. Since openings 120 and 121 of first and second targets 116 and 118 are aligned along a line which is perpendicular to the central axis of horizontal bar 17, the generated beam of light will pass, through both first target 116 and second assurance target 118 only when the beam of light is itself perpendicular to the central axis of horizontal bar 17. If the beam does not pass through the openings in both targets, the orientation of the light relative to horizontal bar 17 is adjusted in order to bring the light beam into a near perfect perpendicular orientation with respect to horizontal bar 17. Once perpendicularity of the beam of light is assured, the operation of axle alignment or detection of frame irregularities is the same as that previously described.
  • Line A'A* marks a position which is co-aligned with the end of attachment 110 and which is approximately 15 inches from the source of the light beam (i.e., laser 12).
  • Line B'B' represents a line that is 28 feet from the laser and corresponds to a typical distance that may be encountered in using the light on a tractor or small trailer.
  • Line C'C represents a line that is 45 feet from laser 12 and represents a distance at which measurements might be taken when using the apparatus on a full size trailer.
  • a perpendicularity checking arrangement in the form of attachment 110, is provided to assure that such errors are not introduced when the light is repositioned. After repositioning of laser 12, and prior to taking measurements or attempting to align the axle, attachment 110 is mounted on horizontal bar 17 and the perpendicularity of the light beam is checked.
  • laser 12 which is mounted to the underlying support by screws or bolts fitted in slotted or slightly oversized holes, is adjusted to bring the light beam into perpendicular alignment with horizontal bar 17 by loosening the screws or bolts and repositioning the laser housing on the support.
  • the perpendicularity of the beam must also be checked and adjusted, if necessary, when a new laser unit is fitted on the apparatus. This initial check and alignment is important regardless of whether the alignment system provides for a repositionable or sliding light, such as that in the preferred embodiment of the present invention, or a relatively stationary light, such as that shown in the McWhorter patent.
  • the housing and mounting brackets associated with lasers or other light sources which are typically used in these applications are relatively light in weight and are non-rigid, and errors in alignment of the beam relative to the housing can be introduced by excessive wear and tear, handling, or other stresses and strains resulting from normal or abnormal usage.
  • the present inventor has recognized that some arrangement for checking and adjusting the perpendicularity of the light beam produced by such lasers or other light sources, relative to the frame of an alignment or measuring device, should be provided to assure a greater degree of accuracy than might otherwise be provided.
  • FIG. 8 and 9 An alternate preferred embodiment is shown in Figures 8 and 9 in which a light source is not needed for aligning the wheel axle.
  • U-shaped frame 10 of Figure 1 is used, but without laser 12.
  • squaring frame 100 which is attached to the frame of, for example, a tractor and includes a top plate 101 with end elements 102 which are extendable, by means of threaded element 125, from plate 101 to attach squaring frame 100 to the tractor frame end elements 102 tightly about the edges of the frame elements to assure that squaring frame 100 is, in fact, square with respect to the tractor frame.
  • Upright reference posts 104 extend upwardly from end elements 102.
  • An upright supporj 106 extends upwardly from top plate 101.
  • FIG. 9 Centering elements 28 and 30 of U-shaped frame 10 are attached to the wheel axle as in the previously described embodiments.
  • Horizontal bar 17 is positioned above the tractor frame and lowered onto the upright support element 106 between upright reference posits 104. Because of the parallel relationship existing between horizontal bar 17 and the central axis of the axle, a measurement of the distances between upright reference posts 104 and horizontal bar 17 on both right and left sides of squaring frame 100 will give an indication of the alignment of the axle. Note that two measurements should be taken, the measurement from an upright post 104 on the right side of the tractor to horizontal bar 17 (distance A), and a measurement from an upright post 104 on the left side of the tractor to horizontal bar 17 (distance B) .
  • horizontal bar 17 (and, thus, the central axis of the axle) will be perpendicular to the center line of the tractor frame and therefore will be properly aligned.
  • the adjustment of the axle to bring the axle into alignment can be accomplished in a conventional manner, such as by inserted shims or by a turnbuckle.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

L'appareil portatif décrit, qui sert à aligner les essieux d'un véhicule et à détecter les irrégularités dans des châssis de véhicules, comprend une source lumineuse (12) servant à créer un plan de référence (A). Des cibles doubles (32, 70) sont fixées au-dessous du châssis du véhicule et sont utilisées conjointement avec la source lumineuse (12) pour établir le plan de référence (A). La source lumineuse (12) est disposée coulissante sur une barre horizontale (17) de la structure en U (10). On peut mesurer des irrégularités dans le châssis en mesurant la distance entre le plan de référence (A) et le dessous du châssis. La structure en U (10) est directement fixée à l'essieu des roues, de sorte que la barre horizontale (17) est parallèle à l'essieu. Un dispositif de contrôle de la perpendicularité (110), qui sert à assurer la perpendicularité du faisceau lumineux par rapport à la barre horizontale (17) est prévu.
PCT/US1988/004117 1987-11-17 1988-11-16 Outil portatif d'alignement de chassis et d'essieux WO1989004947A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019890701362A KR890701989A (ko) 1987-11-17 1988-11-06 휴대용 액슬 및 프레임 정렬공구
DK352989A DK352989A (da) 1987-11-17 1989-07-17 Apparat til opretning af koeretoejers aksler og rammer
NO89892920A NO892920L (no) 1987-11-17 1989-07-17 Baerbart aksel- og rammejusteringsredskap.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12185387A 1987-11-17 1987-11-17
US121,853 1987-11-17

Publications (1)

Publication Number Publication Date
WO1989004947A1 true WO1989004947A1 (fr) 1989-06-01

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PCT/US1988/004117 WO1989004947A1 (fr) 1987-11-17 1988-11-16 Outil portatif d'alignement de chassis et d'essieux

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EP (1) EP0386149A4 (fr)
JP (1) JPH03500930A (fr)
KR (1) KR890701989A (fr)
AU (1) AU2818689A (fr)
WO (1) WO1989004947A1 (fr)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP0593066A1 (fr) * 1992-10-16 1994-04-20 SCHENCK-KOMEG PRÜF- und AUTOMATISIERUNGSTECHNIK GmbH Dispositif pour calibrer des unités de mesure des angles de chasse, de pincement et d'inclinaison des roues de voitures sur un dispositif support
DE102012005164A1 (de) * 2012-03-16 2013-09-19 Bpw Bergische Achsen Kg Verfahren zur Justierung mindestens einer Messbrücke einer Vorrichtung zur Radstellungsmessung
US9435627B2 (en) 2014-10-09 2016-09-06 Alignment Simple Solutions, LLC Wheel alignment device
CN112346067A (zh) * 2017-10-20 2021-02-09 深圳市道通科技股份有限公司 一种车体中心线标定设备及方法

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FR3056171B1 (fr) * 2016-09-20 2020-05-08 Renault S.A.S Methode d'installation d'un referentiel geometrique sur un sol pour la calibration de composants electriques ou electroniques d'un vehicule automobile et un equipement adapte.

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EP0593066A1 (fr) * 1992-10-16 1994-04-20 SCHENCK-KOMEG PRÜF- und AUTOMATISIERUNGSTECHNIK GmbH Dispositif pour calibrer des unités de mesure des angles de chasse, de pincement et d'inclinaison des roues de voitures sur un dispositif support
DE102012005164A1 (de) * 2012-03-16 2013-09-19 Bpw Bergische Achsen Kg Verfahren zur Justierung mindestens einer Messbrücke einer Vorrichtung zur Radstellungsmessung
US9435627B2 (en) 2014-10-09 2016-09-06 Alignment Simple Solutions, LLC Wheel alignment device
CN112346067A (zh) * 2017-10-20 2021-02-09 深圳市道通科技股份有限公司 一种车体中心线标定设备及方法
CN112346067B (zh) * 2017-10-20 2024-04-26 深圳市道通科技股份有限公司 一种车体中心线标定设备及方法

Also Published As

Publication number Publication date
AU2818689A (en) 1989-06-14
KR890701989A (ko) 1989-12-22
EP0386149A1 (fr) 1990-09-12
EP0386149A4 (en) 1992-05-20
JPH03500930A (ja) 1991-02-28

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