CN106017396B - A kind of vehicle dynamic front beam measuring device - Google Patents
A kind of vehicle dynamic front beam measuring device Download PDFInfo
- Publication number
- CN106017396B CN106017396B CN201610637404.0A CN201610637404A CN106017396B CN 106017396 B CN106017396 B CN 106017396B CN 201610637404 A CN201610637404 A CN 201610637404A CN 106017396 B CN106017396 B CN 106017396B
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- drive component
- centering
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- trailing wheel
- table top
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/013—Wheels
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- General Physics & Mathematics (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of vehicle dynamic front beam measuring devices, are related to vehicle equipment technical field.Prenex mechanism for testing includes test cell and centering adjustment unit, and test cell and centering adjustment unit are set to the positive front of trailing wheel adjusting mechanism, mirror image is symmetrical respectively set there are two；Test cell includes measuring braced frame, rotating bracket, support roller, displacement sensor and angle driving lever, rotating bracket top sets that there are two the support rollers that are mutually parallel, at least one support roller is connected with support roller drive component, rotating bracket bottom centre, which is equipped with, to be connect by shaft with the bottom for measuring braced frame, the rear side of rotating bracket is equipped with angle driving lever, measures braced frame and is equipped with and the matched displacement sensor of angle driving lever；Centering adjustment unit includes centering rod, spring probe and centering drive component, and one end of centering rod is equipped with spring probe, and the other end connects centering drive component by connecting plate.Its is simple in structure, safe and reliable, and measurement result is accurate, and repeatability is high.
Description
Technical field
The present invention relates to vehicle equipment technical fields.
Background technology
Automotive wheel toe-in parameter has direct relation to the safety traffic of automobile and the service life of automobile, not due to toeing-in
Qualification, cause tire premature wear and deformity wear, economic loss caused by tire is scrapped in advance be it is prodigious, it is serious also
Blowing out in the process of moving leads to traffic accident, and China has also promulgated national measurement specification JJF1154-2014 thus《Four-wheel is fixed
Position instrument calibrating standard》.Currently, many equipment for measuring toeing-in angle are mostly static measurement equipment on the market, lead to vehicle
The prenex measurement error of wheel is big, and repeatability is bad.
Invention content
The technical problem to be solved by the present invention is in view of the above shortcomings of the prior art, provide a kind of vehicle dynamic front beam survey
Device is measured, simple in structure, safe and reliable, measurement result is accurate, and repeatability is high.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of vehicle dynamic front beam measuring device, including prenex mechanism for testing and trailing wheel adjusting mechanism, prenex mechanism for testing
Including test cell and centering adjustment unit, test cell and centering adjustment unit are set to the positive front of trailing wheel adjusting mechanism, centering
Adjustment unit is set to the outside of test cell, test cell and centering adjustment unit mirror image is symmetrical respectively set there are two；
Test cell and trailing wheel adjusting mechanism are contacted with the bottom surface of the front-wheel of vehicle and trailing wheel respectively；
Each test cell includes measuring braced frame, rotating bracket, support roller, displacement sensor and angle to dial
The top of bar, rotating bracket is set there are two the support roller being mutually parallel, and at least one support roller is connected with support roller drive component, rotation branch
The bottom centre of frame is connect by shaft with the bottom for measuring braced frame, and the rear side of rotating bracket is equipped with angle driving lever, measures
Braced frame is equipped with and the matched displacement sensor of angle driving lever；
The centering adjustment unit includes centering rod, spring probe and centering drive component, and one end of centering rod is equipped with bullet
Property probe, spring probe is in contact with the lateral surface of front-wheel bottom, and the other end of centering rod is connected with centering drive by connecting plate
Dynamic component；
Displacement sensor, support roller drive component, spring probe, centering drive component and trailing wheel adjusting mechanism with it is programmable
Logic controller connects.
As further technical solution, forced synchronism adjustment component is additionally provided between two centering adjustment units,
Forced synchronism adjustment component includes the steel wire rope that both ends are connect with two connecting plates respectively, and steel wire rope is tensioned by pulley and is oriented to.
As further technical solution, it is additionally provided with lifting brake assemblies between two support rollers, lifts brake assemblies
It is set to the top between support roller, is braked by lifting including lifting brake block and lifting brake drive component, lifting brake block
Drive component is connect with rotating bracket；Lifting brake drive component is connect with programmable logic controller (PLC).
As further technical solution, the side of the rotating bracket is additionally provided with return retaining mechanism, and return locks machine
Structure includes lock sleeve, latch segment and locking drive component, and latch segment front end is equipped with lock projection, rear end and set on measurement support frame
Locking drive component connection on frame, lock sleeve are set to rotating bracket side, and lock sleeve is equipped with the lock coordinated with lock projection
Tight groove；Locking drive component is connect with programmable logic controller (PLC).
As further technical solution, two opposite inside upper parts of braced frame that measure are additionally provided with safe guiding
Guardrail.
As further technical solution, the measurement braced frame top further respectively has can be on coverage test unit
The front shroud in face.
As further technical solution, the measurement braced frame lower part is additionally provided with wheel tread adjusting mechanism, and wheelspan is adjusted
Mechanism includes that fixed frame, connection sheet and wheelspan adjust drive component, and fixed frame top is equipped with measures braced frame for connecting
Connection sheet, connection sheet lower part adjust drive component with wheelspan and connect；Fixed frame both sides are additionally provided with the support for lifting test cell
Rail；Wheelspan adjusts drive component and is connect with programmable logic controller (PLC).
As further technical solution, the trailing wheel adjusting mechanism includes mobile table top and is connect respectively with mobile table top
Trailing wheel ajust unit and trailing wheel mobile unit；Mobile table top is rectangular mobile table top；It includes ajusting that trailing wheel, which ajusts unit,
Baffle and synchronize and ajust component, ajusting baffle has two to be mutually parallel, is set to mobile station face top, and with mobile table top
Side is slidably connected, and the long axis of long axis and mobile table top is mutually perpendicular to, and synchronizes and ajusts component set on mobile table top lower part, and with
Ajust baffle connection, synchronize ajust component can drive two ajust baffle and meanwhile move along table top long axis direction move；
Trailing wheel mobile unit includes being set to the guide assembly and trailing wheel mobile unit drive component of mobile station face lower part；It synchronizes and ajusts group
Part and trailing wheel mobile unit drive component are connect with programmable logic controller (PLC).
As further technical solution, it is described synchronize ajust component can be with mobile table top synchronizing moving, including synchronous pendulum
Positive motor, swing arm, connecting rod and bearing rod synchronize and ajust motor immediately below mobile table top, and output shaft is put with set on synchronous
The positive middle part of swing arm above positive motor is affixed, and the both ends of swing arm are connect with one end of two connecting rods respectively, two connecting rods it is another
One end respectively be symmetrically set in synchronize ajust motor both sides the positive middle part of bearing rod connect, bearing rod is being set to mobile table top just
Lower section, and both ends are connect by connector with the both ends for ajusting baffle respectively；It synchronizes and ajusts motor and Programmable logical controller
Device connects.
As further technical solution, the mobile table top top both sides are additionally provided with and can cover above mobile table top
Side cover board.
It is using advantageous effect caused by above-mentioned technical proposal：
The structure of device is simple, easy to use, and floor space is small, and uses dynamic measuring tech, measures toe-in angle
Precision is high, and error is small, and repeatability is strong, is conducive to the efficiency for improving detection adjustment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the portions the A enlarged drawing of Fig. 1；
Fig. 3 is the C direction views of the test cell and wheel tread adjusting mechanism in Fig. 1 positioned at right side；
Fig. 4 is the vertical view of Fig. 3；
Fig. 5 is the B direction views of centering adjustment unit in Fig. 1；
Fig. 6 is the structural schematic diagram of wheel tread adjusting mechanism in Fig. 1；
Fig. 7 is the vertical view of trailing wheel adjusting mechanism in Fig. 1；
Fig. 8 is the upward view of Fig. 7；
Fig. 9 is that the structural schematic diagram for ajusting component is synchronized in Fig. 7.
In figure：1, test cell；2, trailing wheel adjusting mechanism；4, wheel tread adjusting mechanism；5, centering rod；6, spring probe；7、
Centering drive component；8, connecting plate；11, steel wire rope；12, pulley；13, braced frame is measured；14, support roller；15, lifting brake
Piece；16, displacement sensor；17, angle driving lever；18, rotating bracket；20, drive component is locked；21, latch segment；22, lock sleeve；
23, safety is oriented to guardrail；24, fixed frame；25, connection sheet；26, rail is held in the palm；27, mobile table top；28, baffle is ajusted；29, wheelspan tune
Save drive component；32, it synchronizes and ajusts motor；33, swing arm；34, connecting rod；35, bearing rod；36, side cover board；37, front shroud；38、
Ground；39, guide protrusions；40, supporting rack.
Specific implementation mode
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
In the method for traditional test toe-in, mostly use static test greatly, i.e., artificially to vehicle tyre to positive situation into
Row adjustment, then carries out angle measurement, this test in the case where vehicle is generally in stationary state using various sensors
Method due to when being adjusted every time to vehicle wheel alignment situation since various errors, wheel all may not to positive situation
It is completely the same, cause toe-in value measurement error larger, is unfavorable for correctly examining Toe-in.Therefore, it is necessary to using dynamic
The method of measurement obtains more accurate toe-in value.
As shown in figures 1-8, it is a kind of one embodiment of vehicle dynamic front beam measuring device of the present invention：
Including prenex mechanism for testing and trailing wheel adjusting mechanism 2, prenex mechanism for testing includes that test cell 1 and centering adjustment are single
Member, test cell 1 and centering adjustment unit are set to 2 positive front of trailing wheel adjusting mechanism, and centering adjustment unit is set to test cell 1
Outside, test cell 1 and centering adjustment unit mirror image is symmetrical respectively set there are two；Test cell 1 and trailing wheel adjusting machine
Structure 2 is contacted with the bottom surface of the front-wheel of vehicle and trailing wheel respectively.The wheel contact surface of test cell 1 and trailing wheel adjusting mechanism 2 with
Ground is concordant, and vehicle is facilitated to drive into test zone.
Test cell 1 is the core institution for testing toe-in angle, and each test cell 1 includes measuring braced frame 13, turning
Dynamic holder 18, support roller 14, displacement sensor 16 and angle driving lever 17.The top of rotating bracket 18 sets that there are two the supports that are mutually parallel
Wheel 14, at least one support roller 14 are connected with support roller drive component, and support roller 14 turns for being contacted with vehicle front-wheel, and with motor car wheel
Dynamic, wherein at least one support roller 14 is active roller station, and two support rollers 14 are run simultaneously in operational process, can keep the flat of wheel
Steady operation.The bottom centre of rotating bracket 18 is connect by shaft with the bottom for measuring braced frame 13 so that rotating bracket 18
It can be dynamic around pin joint shaft rotation according to the practical situation of movement of wheel.The rear side of rotating bracket 18 is equipped with angle driving lever 17, measures branch
The bottom surface of support frame frame 13 is equipped with and 17 matched displacement sensor 16 of angle driving lever.Angle driving lever 17 can be with rotation
The rotation of holder 18 and swing, and then displacement sensor 16 perceives the spacing between angle driving lever 17 and displacement sensor 16
Variation, the angle of the rotation of angle driving lever 17 can be calculated by this distance change, and then obtains the toe-in angle numerical value of vehicle.It is excellent
Choosing, support roller drive component is motor；Shaft is bearing arrangement.
The outside of each test cell 1 is equipped with centering adjustment unit, for pushing wheel to be moved on mechanism for testing 1,
Make front tyre with mechanism for testing 1 to just.Centering adjustment unit includes centering rod 5, spring probe 6 and centering drive component 7, right
One end of middle bar 5 is equipped with spring probe 6, and spring probe 6 is in contact with the lateral surface of front-wheel bottom, and the other end of centering rod 5 is logical
It crosses connecting plate 8 and is connected with centering drive component 7, centering drive component 7 is connected with braced frame 13 is measured.It is driven by centering
Component 9 promotes centering rod 5 so that spring probe 6 contacts with wheel and push wheel, makes wheel position to just.Two centering rods 5
It should retreat simultaneously, the wheel for pushing both sides can be accurately synchronized, when wheel position is not positive, on the centering rod of side
Spring probe 6 can touch wheel first, and wheel is pushed to middle part, until the spring probe page 6 of the other side touches vehicle
Wheel, spring probe 6 sends pressure data to programmable logic controller (PLC), by judging the stressing conditions of two groups of spring probes 6,
It can achieve the purpose that judge whether centering, i.e. two groups of 6 stressing conditions of spring probe are consistent, then centering success.Centering driving group
Part 7 can be leading screw, belt, rack-and-pinion, steel wire rope, chain or liquid gas pressure transmission etc., it is preferred that centering drive component 7 is
Driven by Hydraulic Cylinder component.
Above-mentioned centering adjustment unit ensures the rotation center of the center of front-wheel and rotating bracket 18 to just, in this process
In, rotating bracket 18 can rotate so that the traffic direction of wheel and the traffic direction of support roller 14 are convergent, until weight completely
It closes, under original state (not contacted with wheel), angle driving lever 17 and the initial spacing of displacement sensor 16 may be programmed
In logic controller reserve, the shift length of angle driving lever 17 can also obtain in test process, by with displacement it is relevant away from
Calculating from parameter, it will be able to obtain the angle of front-wheel deflection, i.e. toe-in angle.
In order to improve the degree of automation of device, it is conveniently operated personal observations and operation, displacement sensor 16, support roller driving
Component, spring probe 6, centering drive component 7 and trailing wheel adjusting mechanism 2 are connect with programmable logic controller (PLC)
Further, in order to ensure that two centering rods can synchronize advance and retreat, the accuracy of centering is improved, two centering adjustment are single
Forced synchronism adjustment component is additionally provided between member.Forced synchronism adjustment component includes the steel that both ends are connect with two connecting plates respectively
Cord 11, steel wire rope 11 are tensioned by pulley 12 and are oriented to.Steel wire rope 11 can be when to middle, to failing accurate synchronization propulsion
Connecting plate 8 is drawn, it is forced to simultaneously advance, so that centering rod 5 being capable of forced synchronism propulsion.
Further, lifting brake assemblies are additionally provided between two support rollers 14, lifting brake assemblies include that lifting is stopped
Vehicle piece 15 and lifting brake drive component, lifting brake block 15 are set to the top between support roller 14, by lifting brake driving
Component is connect with rotating bracket 18.It lifts brake block 15 to be set between two support rollers 14, the disengaging of vehicle can be assisted.Lifting is stopped
15 lower part of vehicle piece is connect by lifting hydraulic cylinder with rotating bracket 18, when vehicle will enter or leave, lifts 15 liters of brake block
Position at least concordant with 14 upper surface of support roller is played, the disengaging of vehicle is facilitated, prevents vehicle damage support roller 14 and rotating bracket
18.In order to improve the degree of automation of device, lifting brake drive component is connect with programmable logic controller (PLC).Preferably, it lifts
It is hydraulic cylinder to rise brake drive component.Further, 15 lower part of lifting brake block is additionally provided with baffle, prevents lifting 15 mistake of brake block
Degree declines to be contacted with support roller 14, influences support roller normal operation.
Further, it is " recessed " shape frame to measure braced frame 13, and support roller 14 is set to the inside of " recessed " shape frame, measures branch
13 top of support frame frame is additionally provided with the guide protrusions 39 for tentatively being limited to wheel, can carry out limit resistance to wheel
Gear prevents except the vehicle region that sideslip is supported to support roller 14 in disengaging, reduces the impaired probability of other parts.
The side of rotating bracket 18 is additionally provided with return retaining mechanism, and return retaining mechanism includes lock sleeve 22, latch segment 21
And drive component 20 is locked, latch segment 21 is set to 18 side of rotating bracket, and front end is equipped with lock projection, rear end and set on measurement branch
Locking drive component 20 on support frame frame 13 connects, and the same side of rotating bracket 18 is equipped with lock sleeve 22, and lock sleeve 22 is equipped with
With the locking groove of lock projection cooperation.Return retaining mechanism can limit the rotational angle of rotating bracket 18, prevent rotation branch
18 corner of frame excessive range or damage displacement sensor 16, return retaining mechanism beyond displacement sensor 16 can also make rotation
Holder 18 comes back to original state and locks, and going out next vehicle of vehicle and detection for tested vehicle is ready, specifically, working as vehicle
When needing disengaging, latch segment 21 pushes up under the drive of locking drive component 20 to lock sleeve 22, until lock projection and locking
Groove is in close contact, and rotating bracket 18 is fixed；When that needs to be tested, latch segment 21 is in locking drive component 20
Drive under be detached from lock sleeve 22, but when rotating bracket 18 rotates, lock sleeve 22 remains to touch latch segment 21, makes rotation branch
Frame 18 can rotate within the scope of the restriction of latch segment 21, prevent excessive other parts of damage of 18 slewing area of rotating bracket.
In order to improve the degree of automation of device, locking drive component 20 is connect with programmable logic controller (PLC).Preferably, locking driving
Component 20 is cylinder.
Further, in order to prevent in vehicles while passing or test process, running out the way, wheel enters two test cells
In region between 1, the parts in this region are protected, two measure the opposite inside upper part of braced frame 13 and are additionally provided with peace
It is complete to be oriented to guardrail 23.
Further, it in order to be protected to components such as test cells 1, measures 13 top of braced frame and further respectively has energy
Front shroud 37 above enough coverage test units 1, front shroud 37 can be slidably connected with the top edge of rotating bracket 18, convenient for opening
It closes and loads and unloads.
Further, it measures 13 lower part of braced frame and is additionally provided with wheel tread adjusting mechanism 4 so that two test cells 1 can edge
The direction vertical with its mirror axis is moved horizontally to spacing and is matched with vehicle front-wheel spacing, to adapt to the vehicle of different model
Test, improve testing efficiency, reduce testing cost.Wheel tread adjusting mechanism 4 includes that fixed frame 24, connection sheet 25 and wheelspan are adjusted
Drive component, 24 top of fixed frame are equipped with for connecting the connection sheet 25 for measuring braced frame 13,25 lower part of connection sheet and wheelspan
It adjusts drive component 29 to connect, and is connect with fixed frame 24 by guide rail guide frame；24 both sides of fixed frame are additionally provided with for holding in the palm
Lift test cell 1 support rail 26, support rail 26 test cell 1 can be played the role of lifting simultaneously and is oriented to, be convenient for accurately into
Line space is adjusted, and also provides accommodation space for wheel tread adjusting mechanism 4.Under the drive that wheelspan adjusts drive component 29, measure
It can be effectively that wheelspan adjusting drive component 29 carries that braced frame 13, which drives 1 transverse shifting of entire test cell, fixed frame 24,
For support, make its stable operation.To improve the degree of automation of device, wheelspan adjusts drive component 29 and Programmable logical controller
Device connects.It can be leading screw, belt, rack-and-pinion, chain etc. that wheelspan, which adjusts drive component 29, driving device can make motor or
Person's hydraulic pressure, pneumatic device etc., it is preferred that it is motor-driven Lead screw transmission structure that wheelspan, which adjusts drive component 29,.
Further, 4 lower part of wheel tread adjusting mechanism is additionally provided with supporting rack 40, disposes this supporting rack 40 in advance in ground,
For being supported to test cell and wheel tread adjusting mechanism 4, and the installation of various components can be facilitated.
Specifically, trailing wheel adjusting mechanism 2 is matched with centering adjustment unit, respectively the center position to trailing wheel and front-wheel and
Vehicle attitude is adjusted, and is ensured that vehicle front-wheel is corresponding with the rotation center position of rotating bracket 18, is specifically included trailing wheel
Adjusting mechanism 2 includes that mobile table top 27 and the trailing wheel being connect respectively with mobile table top 27 ajust unit and trailing wheel mobile unit.It moves
Dynamic table top 27 is rectangular mobile table top, and width is matched with the spacing of vehicle rear wheel, the upper surface of mobile table top 27 with
Ground is concordant, and the friction protrusion that can prevent rear wheels slip is additionally provided on upper surface.Trailing wheel ajust unit include ajust baffle 28 and
Synchronize and ajust component, ajusting baffle 28 has be mutually parallel two, is set to 27 top of mobile station face, and with mobile table top 27
Side is slidably connected, and the long axis of long axis and mobile table top 27 is mutually perpendicular to；It synchronizes and ajusts component and be set to mobile 27 lower part of table top,
And with ajust baffle 28 by being connect through the connector of mobile table top 27, synchronize and ajust component two can be driven to ajust baffle
28 move along the direction movement of 27 long axis of table top simultaneously；27 side of mobile table top is equipped with the bar shaped guiding for accommodating connector sliding
Hole.Trailing wheel mobile unit includes being set to the guide assembly and trailing wheel mobile unit drive component of 27 lower part of mobile station face, guide rail
Component can play guiding role to the overall movement of mobile table top 27.In order to improve the degree of automation of device, synchronizes and ajust
Component and trailing wheel mobile unit drive component are connect with programmable logic controller (PLC).The purpose of work of trailing wheel adjusting mechanism 2 is
Principle is similar with test cell 1, and after vehicle rear wheel reaches on mobile table top 27, trailing wheel is in two and ajusts the outer of baffle 28
Side, mobile table top 27 adjust connection sheet along trailing wheel under the drive of trailing wheel regulation motor and move, and are first moved to trailing wheel and front-wheel
Substantially aligned position, subsequent start-up, which synchronizes, ajusts component, control ajust baffle 28 it is synchronous simultaneously to outside mobile table top 27
Side is moved, and the baffle 28 of ajusting for first touching wheel drives a rear wheel, while another trailing wheel also and then rotates, and passes through pendulum
Pressure sensor induction inside positive baffle 28 illustrates rear wheel until two stressing conditions for ajusting baffle 28 are consistent
It is ajusted.
Specifically, synchronize ajust component can with mobile 27 synchronizing moving of table top, including synchronize ajust motor 32, swing arm 33,
Connecting rod 34 and bearing rod 35 synchronize and ajust motor 32 and be set to immediately below mobile table top 27, output shaft be set to synchronize ajust electricity
The positive middle part of the swing arm 33 of 32 top of machine is affixed, and the both ends of swing arm 33 are connect with one end of two connecting rods 34 respectively, two connecting rods
34 other end respectively be symmetrically set in synchronize ajust 32 both sides of motor the positive middle part of bearing rod 35 connect, bearing rod 35 sets
Immediately below mobile table top 27, and both ends are connect by connector with the both ends for ajusting baffle 28 respectively.As shown in figure 8, working as
It synchronizes when ajust the shaft of motor 32 and rotate clockwise, the both ends of swing arm 33 push connecting rod 34 to be displaced outwardly, and then synchronous
Promotion is ajusted baffle 28 and is moved outward；Conversely, when synchronizing the shaft for ajusting motor 32 and rotating counterclockwise, it is synchronous to pull
It ajusts baffle 28 to move inward, realizes that accurately and reliably trailing wheel ensures positioning, improves the accuracy of test.To improve device
The degree of automation synchronizes and ajusts motor 32 and connect with programmable logic controller (PLC).
Further, in order to protect trailing wheel adjusting mechanism 2,27 top both sides of mobile table top, which are additionally provided with, can cover mobile station
Side cover board 36 above face 17.Side cover board 36 can be connect with the boundary slip of mobile table top 27, convenient for handling.
In use, lifting brake block 15 gives rise to the position concordant with ground, it is single that wheel tread adjusting mechanism 4 adjusts two tests
The spacing of member 1 is adapted with the front-wheel spacing of vehicle to be measured, and vehicle is opened in test zone, vehicle front-wheel is made to be located at two
On the support roller 14 of a test cell 1, vehicle rear wheel is located on the mobile table top 27 of trailing wheel adjusting mechanism 1, then will lifting
Brake block 15 declines so that front-wheel comes into full contact with support roller 14.Then, return retaining mechanism is unclamped, starts support roller 14, opens simultaneously
Dynamic centering adjustment unit and trailing wheel adjusting mechanism 2, adjust the center position of the posture and front-wheel and trailing wheel of vehicle, before ensureing vehicle
The central alignment at the center and rotating bracket 18 of wheel.During adjustment, detected value constantly changes, and tester's observation is programmable to patrol
The numerical value shown on controller is collected, after numerical stability, as prenex detected value, the success of front-wheel centering at this time is run
Steadily.If detected value is not inconsistent with production requirement, testing staff directly can adjust the toe-in angle of vehicle according to detected value
It is whole, until meeting design needs.After testing stopping, support roller 14 stops operating, and centering adjustment unit and trailing wheel adjusting mechanism 2 are equal
It is returned to initial position, return retaining mechanism locks rotating bracket 18, and the lifting rising of brake block 15 is lifted vehicle front-wheel, is detected
Vehicle sails out of detection zone, completes a test period.
It should be noted that since two test cells 1 respectively measure the toe-in value of two wheels, when two vehicles
When the inconsistent or gap of toe-in value test of wheel is larger, tested after centering adjustment unit centering can be reused, so as to
More accurately it is adjusted.
After adopting the above technical scheme, the structure of device is simple, easy to use, floor space is small, and is surveyed using dynamic
Amount technology, the precision for measuring toe-in angle is high, and error is small, and repeatability is strong, is conducive to the efficiency for improving detection adjustment.
Claims (9)
1. a kind of vehicle dynamic front beam measuring device, it is characterised in that：Including prenex mechanism for testing and trailing wheel adjusting mechanism (2),
Prenex mechanism for testing includes test cell (1) and centering adjustment unit, and test cell (1) and centering adjustment unit are put set on trailing wheel
Positive mechanism (2) positive front, centering adjustment unit are set to the outside of test cell (1), test cell (1) and centering adjustment unit point
Other mirror image is symmetrical set there are two；Test cell (1) and trailing wheel adjusting mechanism (2) respectively with the front-wheel of vehicle and trailing wheel
Bottom surface contacts；
Each test cell (1) includes measuring braced frame (13), rotating bracket (18), support roller (14), displacement sensing
Device (16) and angle driving lever (17), the top of rotating bracket (18) set that there are two the support roller (14) being mutually parallel, at least one supports
Wheel (14) is connected with support roller drive component, and the bottom centre of rotating bracket (18) passes through shaft and the bottom for measuring braced frame (13)
Portion connects, and the rear side of rotating bracket (18) is equipped with angle driving lever (17), measures braced frame (13) and is equipped with and angle driving lever
(17) matched displacement sensor (16)；
The centering adjustment unit includes centering rod (5), spring probe (6) and centering drive component (7), and the one of centering rod (5)
End is equipped with spring probe (6), and spring probe (6) is in contact with the lateral surface of front-wheel bottom, and the other end of centering rod (5) passes through company
Fishplate bar (8) is connected with centering drive component (7)；
Displacement sensor (16), support roller drive component, spring probe (6), centering drive component (7) and trailing wheel adjusting mechanism (2)
It is connect with programmable logic controller (PLC)；
The trailing wheel adjusting mechanism (2) includes that mobile table top (27) and the trailing wheel being connect respectively with mobile table top (27) ajust unit
And trailing wheel mobile unit；Mobile table top (27) is rectangular mobile table top；Trailing wheel ajust unit include ajust baffle (28) and
It synchronizes and ajusts component, ajusting baffle (28) has two to be mutually parallel, is set to mobile station face (27) top, and and mobile station
Face (27) side is slidably connected, and the long axis of long axis and mobile table top (27) is mutually perpendicular to, and synchronizes and ajusts component set on mobile station
Face (27) lower part, and being connect with baffle (28) is ajusted, synchronize ajust component can drive two ajust baffle (28) and meanwhile along
The direction movement of mobile table top (27) long axis；Trailing wheel mobile unit include be set to mobile station face (27) lower part guide assembly and
Trailing wheel mobile unit drive component；Synchronize ajust component and trailing wheel mobile unit drive component with programmable logic controller (PLC) connect
It connects.
2. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：Two centering adjustment
Forced synchronism adjustment component is additionally provided between unit, it includes that both ends are connect with two connecting plates respectively that forced synchronism, which adjusts component,
Steel wire rope (11), steel wire rope (11) are tensioned by pulley (12) and are oriented to.
3. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：Two support rollers (14)
Between be additionally provided with lifting brake assemblies, lifting brake assemblies include lifting brake block (15) and lifting brake drive component, lifting
Brake block (15) is set to the top between support roller (14), is connect with rotating bracket (18) by lifting brake drive component；It lifts
Brake drive component is risen to connect with programmable logic controller (PLC).
4. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：The rotating bracket (18)
Side be additionally provided with return retaining mechanism, return retaining mechanism includes lock sleeve (22), latch segment (21) and locking drive component
(20), latch segment (21) front end is equipped with lock projection, rear end and the locking drive component in measurement braced frame (13)
(20) it connects, lock sleeve (22) is set to rotating bracket (18) side, and lock sleeve (22) is equipped with the locking coordinated with lock projection
Groove；Locking drive component (20) is connect with programmable logic controller (PLC).
5. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：Two measurement supports
The opposite inside upper part of frame (13) is additionally provided with safety and is oriented to guardrail (23).
6. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：The measurement braced frame
(13) further respectively have being capable of the front shroud (37) of coverage test unit (1) above on top.
7. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：The measurement braced frame
(13) lower part is additionally provided with wheel tread adjusting mechanism (4), and wheel tread adjusting mechanism (4) includes fixed frame (24), connection sheet (25) and wheelspan
Drive component (29) is adjusted, fixed frame (24) top is equipped with for connecting the connection sheet (25) for measuring braced frame (13), connection
Piece (25) lower part adjusts drive component with wheelspan and connect；Fixed frame (24) both sides are additionally provided with the support for lifting test cell (1)
Rail (26)；Wheelspan adjusts drive component (29) and is connect with programmable logic controller (PLC).
8. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：Described synchronize ajusts component
Including it can synchronize with mobile table top (27) synchronizing moving and ajust motor (32), swing arm (33), connecting rod (34) and bearing rod (35),
Synchronize and ajust motor (32) and be set to immediately below mobile table top (27), output shaft be set to synchronize ajust rotation above motor (32)
The positive middle part of bar (33) is affixed, and the both ends of swing arm (33) are connect with one end of two connecting rods (34) respectively, two connecting rods (34)
The other end respectively be symmetrically set in synchronize ajust motor (32) both sides bearing rod (35) it is positive middle part connect, bearing rod (35)
Immediately below mobile table top (27), and both ends are connect by connector with the both ends for ajusting baffle (28) respectively；Synchronous pendulum
Positive motor (32) is connect with programmable logic controller (PLC).
9. a kind of vehicle dynamic front beam measuring device according to claim 1, it is characterised in that：The mobile table top (27)
Top both sides, which are additionally provided with, can cover the side cover board (36) of mobile table top (17) above.
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| CN201610637404.0A CN106017396B (en) | 2016-08-05 | 2016-08-05 | A kind of vehicle dynamic front beam measuring device |
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| CN201610637404.0A CN106017396B (en) | 2016-08-05 | 2016-08-05 | A kind of vehicle dynamic front beam measuring device |
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| CN106017396B true CN106017396B (en) | 2018-10-19 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106482968B (en) * | 2016-10-26 | 2018-09-28 | 南京沃宇机电有限公司 | A kind of automobile tire fixture |
| CN109253890B (en) * | 2017-07-12 | 2022-06-21 | 上海宝钢工业技术服务有限公司 | Double-steering front axle positioning and adjusting device for large truck |
| CN110308429A (en) * | 2019-05-14 | 2019-10-08 | 一汽轿车股份有限公司 | A kind of method and apparatus of millimetre-wave radar producing line calibration |
| CN113945133B (en) * | 2021-09-01 | 2024-05-14 | 杭州电子科技大学 | Rugby measuring device with automatic correction function |
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