Device for measuring camber and caster of car steerable wheels. RU patent 2308015.
 Method of measuring summary play in vehicle steering gear / 2295714Proposed method come to fixing angle of turning of steering wheel from moment of being of movement of steerible wheels to one side till moment of beginning of movement to other side at running of vehicle. Summary play is determined by angle of turning of steering wheel between moments of appearance of side accelerations of opposite signs. |
 Method for proximate diagnostics of vehicle wheel setting angles / 2293963Proposed method for proximate diagnostics of vehicle wheel setting angles that can be also used to diagnose condition of hanger components and vehicle wheel setting angles includes installation of one wheel of one vehicle axle on rotary horizontal supporting platform and recording of parameters characterizing their setting angles while turning the wheels, other wheel of same vehicle axle being blocked; then platform is turned in horizontal plane within range of acting wheel-to-platform frictional forces, and measurements are made of distance corresponding to total integral clearances in hanger components and steering wheel trapezium at fixed points on wheels. Then wheels are synchronously rolled about their axis so that they turn through 90 deg., and distance corresponding to integral clearance in wheel bearings and in hanger components is measured at same fixed points. After that wheels are synchronously rolled again so that they further turn about their axis through other 90 deg., and distances characterizing degree of their convergence are measured at same fixed points on wheels occurring in diametric opposition to their position during first measurement. |
 Device and method for balancing actuator control unit / 2292022Proposed device includes control unit with balancing members with whose help bell crank is secured on shaft of electromechanical converter, swivel table with base, two movable stops and two voltmeters with power supply source. Method consists in applying an overload to bell crank of control unit in plane of symmetry of control unit by rotating the swivel table and measuring the center of mass of control unit balancing members. Prior to creating an overload, two movable stops are brought in contact with bell crank and moment of closing of electric circuits by movable stop and each end of bell crank is checked. Then stops are drawn away and equal definite clearances are set between ends of bell crank and stops. After creating an overload, moment of closing electric circuits of each end of bell crank is checked. In case closing of electric circuits is noted at different moments of time, cycle of above-mentioned operations is repeated at change of positions of centers of mass of balancing members with electromechanical converter switched-off till moment of simultaneous closing of electrical circuits by each end of bell crank under action of overload. |
 Automobile controlled wheels convergence measuring device / 2292011Apparatus includes driving running drums kinematically coupled with drive system; driven running drums and measuring axially movable drums and in addition it includes carriages for supporting measuring movable drums, guides for carriages, pneumatic cylinders and displacement pickups. |
 Device for checking play and force on vehicle steering wheel / 2273012Proposed device has telescopic member with stops on ends for fastening said member on rim of steering wheel and device for determining angular position of steering wheel made in form of indicator and scale secured on telescopic member with possibility of turning in plane parallel to plane of steering wheel and displacement of center of turning along telescopic member, steering wheel force sensor installed on one of end of telescopic member and made in form of two-way dynamometer, device for indicating moment of beginning of turning of steerable wheels of vehicle, and source of laser beam to be used as indicator. Signaling device contains movable electric contact installed on frame or front axle of vehicle to be tested for contact with rim of one of vehicle steerable wheels, and portable light indicator connected to supply source through said electric contact. Stops of telescopic member are furnished with spring catches to improved reliability of fastening of telescopic member on steering wheel. |
 Method of and device for checking vehicle steering gear summary play / 2266530Proposed method of checking summary play in vehicle steering gear comes to successively turning steering wheel from one to other side through angle exceeding possible play with subsequent recording of steering turning angle and displacement of steerable wheel by detectors and forming characteristics of play after which play is estimated by angle of turning of steering wheel after taking up play. Steering wheel turning angle detector is installed arbitrary on steering wheel rim in plane of its rotation, and displacement of steerable wheel is determined by displacement of point extreme from center of rim of steerable wheel in horizontal plane taking it as beginning of counting of steering wheel play, and end of counting is determined by two-fold displacement of said point in opposite direction. Summary play of steering gear is determined as difference of angle of turning of steering wheel from beginning of counting to first beginning of displacement of rim of steerable wheel with extraction of angle of turning of steering wheel from first to second beginning of displacement of rim of steerable wheel in the same direction. Steering wheel turning angle detector is fixed in three points in arbitrary place on steering wheel rim in plane of its rotation. Device for checking summary play in vehicle steering gear has steering wheel turning angle detectors and steerable wheel displacement detectors, and play calculator unit at output of which play indicator is installed, all being connected to supply unit. Play calculator unit includes series-connected analog-to-digital converter and microcontroller. Output of steering wheel turning angle detector made in form of gyroscope is connected to input of analog-to-digital converter whose output is connected to first input of microcontroller to first output of which play indicator is connected, and to second output, additional indicator-piezoradiator. Second input of microcontroller is connected to output of steerable wheel displacement detector, each element of circuit being connected to supply unit by common bus. Device is furnished with switch whose input is connected to third output of microcontroller, and outputs are connected to drivers of interface RS-232 and USB. |
 Wheel alignment gauge / 2251658Proposed wheel alignment gauge contains working member and measuring element. Working member can rotate around its axle, and measuring element secured on working member can come in contact with check points on surfaces under checking and can move along working member. Working member is made up of similar symmetrical parts and is installed on clamp connected with centering cones. Gauge is fastened by means of centering cones engaging with centering holes of axle-shafts or hubs of wheels. Gauge can be furnished with adapters with central conical holes designed for fitting on wheel, disks, when used on automobiles whose wheels have no centering holes. |
 Vehicle steerable wheels turning sensor / 2246713Proposed sensor is made in form of two supports 1 interconnected by crossmember 2. Stop 3 is mounted on one end of crossmember to thrust against external side surface of disk of vehicle steerable wheel 4. Other end of crossmember is provided with pin 5 spring-loaded relative to said crossmember for engagement with disk of wheel 4. Pin is connected through electromagnetic lock with one end of measuring strip 9. Other end of strip interacts with recording element 10 whose output is connected to corresponding input of electronic unit. |
 Device for determining angular vibration of vehicle wheel / 2245536Device has testing bench and control device which comprises storing device, unit for generating signals of recording dependence of angular deviation on time, unit for decoding discrete signal and its interpolating, correlation unit, and unit for calculating power spectrum. |
 Device for measuring angular movements of object / 2306526Device comprises emitter, modulator, and first, second, and third photodetectors. The device is additionally provided with the circuit for measuring angular movement and circuit for measuring angular velocity and angular acceleration. The circuit for measuring angular velocity and angular acceleration comprises shifting unit, AND-NOT element, pulse generator, AND element, counter, first divider, two indicators, controller of constant value, multiplier, and second divider. |
 Method of measuring angle of divergence of light beam / 2305255Method can be used for checking angle of divergence of light beam. Light beam, having angle of divergence to be found, is focused in focal plane where two optical wedges are disposed. Wedges diverge light half-spots in different directions; spots are imaged by projection lens in registration plane. Part of beam is deflected into plane of image of source to be disposed at distance of 2f" from focusing system where size d2 of image of source has to be measured. Source is mounted in front of focusing system at distance of 2f', where f' is focal length of focusing system. Then sizes d1 of deflected spots are measured and angle of divergence Θ is calculated from relation of sinΘ/2=-1/+2[1/f' (d2xd1/d2+-d1)], where "+" sign is chosen in case of prefocal crossing of beams and "+" sign is chosen in case the beams cross behind focal plane. |
 Fiber-optic pickup of rotation angle / 2290606Pickup comprises multi-mode fiber light guide connected with the part whose angle of rotation should be measured, source of coherent radiation, device for input of radiation to the light guide, and TV camera that records the distribution of intensity of output radiation. The fiber light guide is bent in a plane perpendicular to the plane of rotation. A section of light guide between the radiation source and the initial point the bend is rectilinear. The axis of the rectilinear section of the fiber light guide is positioned at a minimum distance from the axis of rotation of the part. |
 Method of mating longitudinal axes of on-board device and object / 2282824Method can be used at adjustment of on-board devices at objects of different purposes to provide high precision of navigation. Error angle of incoming normal of on-board device's reflector is measured relatively its longitudinal axis. Optical axis of first theodolite is adjusted along direction of object's longitudinal axis and along direction of incoming normal of on-board device's reflector. Second theodolite is mounted on left board of object in such a manner that first theodolite could be sighted on from the second one. Optical axes of theodolites are matched when first theodolite is disposed in area of sight of object's longitudinal axis. After that optical axes of theodolites are matched. |
 Method for adjusting photo-detectors row and device for realization of said method / 2272247Device for adjusting row of photo-detectors has central light-emitting mark, projection optical system, row of photo-detectors, block for selecting signals from row elements, block for determining coordinate and controlling block. Device additionally includes two pairs of light-emitting marks, four blocks for determining maximal signals and two blocks for subtracting signals, while pairs of light-emitting marks are evenly spaced from central mark, adjacent marks of each pair are directed differently and are extensions of one another and are spaced from each other along row of photo-detectors. |
 Optical-electronic device for controlling angular dimensions / 2260174Device has lighting device, measured object, support line, optical system, photo-detector, analog-digital converter, measuring block, position indicator and drive. Additionally inserted are spring suspension, position detector for spring suspension, drive is made in form of drive for moving suspension, suspension is kinematically connected to support line on one side and moving drive and position indicator on other side. |
 Mode of hologram interferometering of a flat object / 2255308The mode of hologram interferometering of a flat object is in making of a double exposure hologram of the surface of the object in counter rays. Then two images of the surface of the object reconditioned by the hologram are directed in an optical system in which one after another two direct Fournier-Frenel transform are carried out, interferograms of the images of the surface of the object are fixed. The object and the interferogram are located at such distances from the lenses that the in-focus image of the surface of the object in the surface of the interferogram is made and at the expense of variations of these distances and the focal distances of the lenses, measured sizes are divided and wishful sensitivities of measurements of travel and inclination constant along the whole surface are chosen. |
 Optoelectronic converter of position-code type / 2248093Device has coordinate scale having raster and code path of which the first one is represented as a chain of windows forming regular raster and the second one is represented as a chain of code windows, reading unit having illumination unit, analyzing raster mask, raster path photodetectors, and multi-element raster path photodetector. The raster path photodetectors, and multi-element raster path photodetector are connected to recording and analyzing unit, respectively. The reading unit has analyzing code mask being two window paths arranged so that succession period is a multiple of code step and window width is equal to the code step. The windows on the paths are shifted by a value equal to half code step. |
 Method for checking cylindrical components such as nuclear fuel pellets for perpendicularity / 2247939In order to check component 10 such as nuclear fuel pellet of any diameter and length for perpendicularity and to obtain measurement results stable with time, this component is placed on supporting surface and distances separating diametrically opposite generating lines of component from read-our rod T, T' are measured at two different levels and in two measuring planes P, P' normal to one another by means of two pairs of laser micrometers A1, A2; B1, B2. Maximal deviation of component under check from perpendicularity is calculated on them. |
 Laser ranger monitoring device / 2246710Device has receiving optical module placed in series with optic signal delay unit and radiation unit. Axes of receiving optical module and radiation module are aligned. Receiving optical module additionally has mesh with luminous radial lines and transparent diaphragm which is disposed in point of crossing of lines of mesh and mounted in focal plane of first objective. Device also has photoreceiver, measurement data control and registration unit, illuminator, optical unit, fiber-optic divider and fiber-optic adder. |
 Laser viewfinder system / 2245513Device has laser fixed in body, images forming device made in form of intersecting filaments. Body is made in form of hollow prism, provided with cone at the end. Upper portion of cone is combined with center of apertures provided in coordinate lines system. Body is mounted with possible angular displacements around aperture center. Forming device filaments are made non-transparent and fixed in frames inserted in system. Frames are placed with possible displacement independently from one another in direction perpendicular to filaments. |
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Laser ranger monitoring device / 2246710 Device has receiving optical module placed in series with optic signal delay unit and radiation unit. Axes of receiving optical module and radiation module are aligned. Receiving optical module additionally has mesh with luminous radial lines and transparent diaphragm which is disposed in point of crossing of lines of mesh and mounted in focal plane of first objective. Device also has photoreceiver, measurement data control and registration unit, illuminator, optical unit, fiber-optic divider and fiber-optic adder. |
FIELD: transport engineering; car servicing equipment.
SUBSTANCE: device for checking steering geometry of vehicle steerable wheels contains horizontal platform with pads movable in horizontal plane for arrangement of steerable wheels of automobile. Using proposed device, measuring are carried out turning wheels with brakes applied. Device contains additionally two movable pads longitudinal displacement pickups and two movable pads cross displacement pickups. Values of cross displacement of movable pads indicated caster of steerable wheels and values of longitudinal displacement of movable pads, camber of steerable wheels.
EFFECT: reduced time taken for measuring camber and caster of steerable wheels.
3 dwg
The invention relates to the field of technical maintenance of vehicles, in particular to the equipment for measuring the angles of the steered wheels cars.
Trend of development of the equipment for this purpose is viewed in the transition from stationary electro-optic stands to Express the stands, which allows to increase labour productivity. A well-known stand FFP-4 ( A.M. Diagnostic provision of technical maintenance and repair of cars. M-Higher school, 1990. - 208 S.: Il.) makes measurement toe-in and camber, the angle of the longitudinal axis of the steering and consistency of turning angles of the wheels to the left and right. The stand consists of a horizontal platform (or lift), which is installed on the vehicle with the front wheels are mounted on the movable in the horizontal plane circles, allowing the steered wheels rotate around its axis of rotation of the steering wheel. Turntables have the scale and arrows for determining the angles of rotation of the steering wheel. On the disks managed wheels are mounted projectors, which have settings to ensure the alignment of the rotation of the wheel and turn the projector. At a certain distance from the front of the axis are set left and right screens with vertical and horizontal axes and scales laid out in degrees. The vertical scale is to determine the angle of the longitudinal axis of rotation of the steering wheel, the horizontal - to determine the camber. Measuring wheel camber screens are ahead of the vehicle, and for measuring the angle of the longitudinal axis of rotation of the steering wheel is on the side of the car is parallel to the longitudinal axis of the vehicle.
A significant drawback of the mentioned booth is the low productivity due to the large volume of preliminary finishing works.
It is also known device for checking the steering wheels of the vehicle (inventor's certificate of the USSR SU 1415658 A1, IPC G01 11/26 1995), a similar stand FFP-4. It has a horizontal platform with set rotating platforms, moving in a horizontal plane, and projection equipment that is connected with the driven wheels.
Disadvantages of the considered device are low productivity and complexity in the preparation work at the expense of installation and adjustment of the mounted equipment.
The task of this unit is to reduce the time of determining the collapse of the angles of inclination of longitudinal axis of the steering due to the absence of the hinged equipment.
Solution of the problem is achieved by the fact that the device for checking the steered wheels transport products, containing a horizontal platform placed on it moving in a horizontal plane sites for placing of the steering wheels of the car, characterized in that it additionally contains two sensor longitudinal and two sensor transverse displacements of mobile platforms, which, when turn the stagnation of the front wheels of the position corresponding to the straight motion of a vehicle, determine the longitudinal and transverse displacements sites, and by the values of the longitudinal displacements of mobile sites, you can determine the camber and the transverse displacement - longitudinal angle the axis of rotation of the steering wheel.
The device (see Fig.1-3) to measure the collapse of the angles of inclination of longitudinal axis of the steering is
- from the horizontal platform 1;
- two sites 2, mobile in longitudinal and transverse directions for installing the steering wheels of the car;
- sensors longitudinal displacements 3 measuring the longitudinal displacement of the mobile platforms;
- sensors transverse displacements 4, measure the transverse displacements of mobile platforms.
A device for measuring the collapse of the angles of inclination of longitudinal axis of the steering works as follows.
Car set on a horizontal platform 1, the front managed wheel is mounted on a mobile in longitudinal and transverse directions of the site 2 in the position corresponding to the straight motion of a vehicle, after which all the wheels (front and rear) inhibit. Measuring sensors longitudinal and transverse displacements of the moving platforms of the initial position after steering, determine corresponding angles of the steered wheels, and the values of transverse displacements sites determine the longitudinal angle of inclination of the axis of rotation of the steering wheel, and the magnitude of the longitudinal displacements - camber angles.
The device for checking the steering wheel of the vehicle, containing a horizontal platform placed on it moving in a horizontal plane sites for placing of the steering wheels of the car, different the fact that measurement is carried out at the braked wheels by turning the device additionally contains two sensor longitudinal and two sensor transverse displacements of mobile platforms, and the values of transverse displacements of mobile platforms determine the longitudinal angle of inclination of the axis of rotation the steering wheels, and the values of longitudinal displacements - camber angles.