CN111999077A

CN111999077A - Automobile sideslip detection table with automatic positioning function and detection method

Info

Publication number: CN111999077A
Application number: CN202011190163.2A
Authority: CN
Inventors: 朱伟; 高建国
Original assignee: Chengdu Chengbao Development Co ltd
Current assignee: Chengdu Chengbao Development Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2020-11-27
Anticipated expiration: 2040-10-30
Also published as: CN111999077B

Abstract

The invention discloses an automobile sideslip detection platform with an automatic positioning function and a detection method. On the frame was entered to the car, when the front wheel of car was responded to by photoelectric switch, the car stopped, then set aside the subassembly through the car and put the car into alignment, make the front and back wheel perpendicular to left side slide and the right side slide of car enter, drive the detection component motion that sideslips through location slide mechanism simultaneously and carry out preliminary location, then carry out the accurate positioning to the detection component that sideslips, the location is accomplished the back, the front wheel of car enters on the detection component that sideslips, the completion detects the sideslip of car front wheel, make the detection that sideslips of car more accurate.

Description

Automobile sideslip detection table with automatic positioning function and detection method

Technical Field

The invention relates to the field of automobile sideslip detection, in particular to a detection method of an automobile sideslip detection platform with an automatic positioning function.

Background

The detection of the automobile steering wheel sideslip amount is one of important contents for guaranteeing the safe operation of an automobile. The sideslip referred to in this specification means the sideslip of the steering wheels of the automobile, not the overall sideslip that occurs when the automobile is braked. The lateral slip of the front wheel refers to the phenomenon that the toe-in and the camber angle of the front wheel are not matched (the lateral force generated by the camber angle and the lateral force generated by the toe-in are not balanced), so that the automobile generates a leftward or rightward deviation phenomenon when the automobile runs in a straight line. It reflects the stability of the straight-line running of the automobile. At this time, the steered wheels roll forward and also generate a phenomenon of lateral slip, which is called sideslip. Practice proves that the sideslip of the automobile can cause the increase of rolling resistance, the deterioration of running stability, the aggravation of tire abrasion, the increase of running oil consumption and heavy steering, and the service performance and the economical efficiency of the automobile are influenced. The sideslip of the automobile must be periodically detected.

If the front wheel sideslip amount is within an allowable range (GB7258-2012 'technical conditions for motor vehicle operation safety' stipulates not more than 5m/km), the front wheel sideslip amount has no great influence on the use of the vehicle, but if the sideslip amount is too large, the harm is great, and the method is mainly represented in the following aspects: affecting the driving stability. When the sideslip amount is too large, the phenomena of heavy steering, weakened automatic aligning action, obvious direction deviation, head swing (when the vehicle speed is more than 50 km/h) and the like can occur; increasing fuel consumption. The running resistance increases when the amount of sideslip is excessive. Therefore, the oil consumption of the automobile is increased, and the oil consumption is generally increased by about 4 percent; the tire is excessively worn. The abrasion loss and the abrasion speed are in direct proportion to the sideslip quantity according to the quantitative analysis of the relation between the sideslip quantity and the tire abrasion by the related data. When the detection condition of 1 ten thousand vehicle numbers is analyzed, 70 percent of the vehicle sideslip amount is unqualified. 80% of the front wheels of the vehicle are severely worn, the tread is flat, and the tire shoulders are zigzag. Therefore, the front wheel side slip of the automobile is required to be strictly checked in the regulations of national standards GB7258-2012 technical conditions for safe operation of the automobile, GB18565-2001 comprehensive performance requirements and checking methods for commercial vehicles, GB/T17993-2005 general requirements for the capability of the comprehensive performance checking station of the automobile, GB21861-2008 motor vehicle safety checking projects and methods and the like. And provides clear technical indexes and detection methods.

The sideslip inspection bench is a detection device which detects the magnitude and direction of the sideslip amount of the front wheel by using a method for detecting the left-right movement amount of a sliding plate when an automobile passes through the sliding plate at a low speed and judges whether the sideslip amount is qualified or not. The most common side-slipping inspection bench used in China is a sliding plate type side-slipping inspection bench which is divided into a double-plate linkage type side-slipping inspection bench and a single-plate type side-slipping inspection bench according to the structure, and the side-slipping inspection equipment used in the current domestic automobile inspection station is mostly the double-plate linkage type side-slipping inspection bench. The track width of the front wheels of different vehicles is different due to different models of vehicles or different models of front wheels, and the track width refers to the distance between the center lines of the tracks left by the wheels on the vehicle supporting plane (generally, the ground). If the two ends of the axle are double wheels, the track width is the distance between the two center planes of the double wheels, the distance between the sliding plates at the two sides of the existing sideslip detection platform can not be adjusted according to different wheel pitches, so that the side sliding plates are easy to be not positioned on the running path of the front wheel when the automobile drives into the detection platform, the position of the automobile or the position between the sliding plates at the two sides needs to be adjusted manually, and the problems of difficult adjustment and long time consumption are caused, the accuracy of the detection result is influenced to a certain extent, and meanwhile, the existing side sliding plate can not be positioned accurately, so that the front wheel of the automobile can not run at the central position of the side sliding plate, and the front wheel of the automobile can easily run at the positions of the two sides of the side sliding plate, due to the influence of the gravity of the automobile, the side sliding plate can generate a certain sideslip amount when a force is applied to one side of the side sliding plate, so that the sideslip distance is inaccurate, and the difference between the measured sideslip value and the actual sideslip value is large; because the car drives in from the direction of difference, and the automobile body is the slope of different angles, prior art all drives the vehicle through the manual work and ajusts, drives in again and sideslips and detect on the test table, and the manual work is ajusted and is needed many times adjustment, and the space of detection zone is limited simultaneously, leads to the vehicle can not be complete ajusted, and then influences the detection that the auto steering wheel sideslips, leads to the data error that detects too big.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides an automobile sideslip detection platform with an automatic positioning function and a detection method, which are used for solving the defects of the prior art, and can quickly align an automobile, and meanwhile, a left side sliding plate and a right side sliding plate can be adjusted according to the wheel track of the front wheels of the automobile, so that the two front wheels respectively run at the central positions of the left side sliding plate and the right side sliding plate, and the automobile sideslip detection is quicker and the detection data are more accurate.

The purpose of the invention is realized by the following technical scheme: a detection method of an automobile sideslip detection platform with an automatic positioning function comprises the following steps:

s1, acquiring a zero position; when the cylinder is not in operation, the original position of the poking rod a is taken as the zero position of the left side sliding plate, the original position of the poking rod b is taken as the zero position of the right side sliding plate, the two electromagnets a and the two electromagnets are electrified through the control system, one motor close to the left side sliding plate rotates to drive one screw rod to rotate, so that one push rod is driven to move forwards, the electromagnet on one push rod is electromagnetically attracted with the magnet to push the left side sliding plate to move, the other motor close to the right side sliding plate rotates to drive the other screw rod to move forwards, the electromagnet on the other push rod is electromagnetically attracted with the magnet to push the right side sliding plate to move, so that the fixed cylinder on the two moving plates is driven to move in the sliding chute, when the electromagnet a on the left side sliding plate is electromagnetically attracted with the electromagnet a on the poking rod a, the motor for controlling the left side sliding plate to reversely rotate to, when the magnet a on the right sliding plate and the magnet on the right poking rod b are magnetically attracted, a motor for controlling the right sliding plate reversely rotates to drive the other push rod to move back to the initial position, and the corresponding other electromagnet is powered off, so that the zero positions of the left sliding plate and the right sliding plate are positioned, the distance between the left sliding plate and the left displacement sensor at the zero position is obtained through the left displacement sensor, the position is marked as Y1, and the distance between the right sliding plate and the right displacement sensor at the zero position is obtained through the right displacement sensor, and the position is marked as Y2;

s2, straightening the automobile and initially positioning the front wheel; the automobile is driven onto the automobile correcting assembly, the correcting rod a and the correcting rod b are driven by the air cylinder to move to correct the automobile, meanwhile, the correcting rod a and the correcting rod b drive the left side sliding plate and the right side sliding plate to move through the positioning sliding mechanism, after the automobile is corrected, the primary positioning of the left side sliding plate and the right side sliding plate is completed, the distance between the left side sliding plate and the left displacement sensor at the primary positioning position is obtained through the left displacement sensor, the position is marked as X1, the distance between the right side sliding plate and the right displacement sensor at the primary positioning position is obtained through the right displacement sensor, and the position is marked as X2;

s3, accurately positioning the front wheels of the automobile; inputting the type of the automobile wheel into a control system to obtain the width of the type of the automobile wheel, wherein the width is marked as X, X/2 is the distance between a left side sliding plate and a right side sliding plate which need to move outwards, starting two motors, simultaneously electrifying an electromagnet, powering off the electromagnet a, driving the left side sliding plate and the right side sliding plate to move through the electromagnetic attraction of the electromagnet and the magnet, respectively detecting the moving distance of the left side sliding plate and the right side sliding plate through a left displacement sensor and a right displacement sensor, after the left side sliding plate and the right side sliding plate continue to slide outwards for the distance of X/2, powering off the electromagnet, driving a push rod to move to the original position through the reverse rotation of the two motors, thereby realizing the accurate positioning of two front wheels of the automobile, driving the two front wheels on the central positions of the left side sliding plate and the right side sliding plate respectively, enabling the sideslip detection data to be more accurate, and enabling the distance between the left side, the distance between the right side sliding plate and the right displacement sensor is X2+ X/2;

s4, detecting sideslip data; the two front wheels of the automobile are respectively driven on the left side sliding plate and the right side sliding plate in a straight line, the left side sliding plate and the right side sliding plate are enabled to move on the frame in a lateral mode due to the lateral sliding of the front wheels, the distance between the left side sliding plate and the left side sliding plate is detected through a left displacement sensor, the distance is marked as Z1, Z1- (X1 + X/2) is the lateral sliding value of the left front wheel of the automobile, the distance between the right side sliding plate and the right side sliding plate is detected through a right displacement sensor, the distance is marked as Z2, and Z2- (X2 + X/2) is the lateral sliding value of;

s5, resetting; the automobile correcting component returns to the original position through contraction of the air cylinder, the two motors are started, the electromagnets are powered on, the left side sliding plate and the right side sliding plate are driven to return to each zero position through electromagnetic attraction of the electromagnets and the magnets, namely the left side sliding plate returns to the Y1, the right side sliding plate returns to the Y2, finally the electromagnets are powered off, and the two push rods return to the original position.

An automobile sideslip detection platform with an automatic positioning function comprises a rack, a sideslip detection assembly, an induction assembly and an automobile straightening assembly, wherein the automobile straightening assembly, the induction assembly and the sideslip detection assembly are sequentially arranged on the rack from front to back, and the sideslip detection assembly is connected with the automobile straightening assembly through a positioning sliding mechanism;

the sideslip detection assembly comprises a left side sliding plate, a right side sliding plate and a driving mechanism, the left side sliding plate and the right side sliding plate can be arranged on the rack in a left-right sliding mode, the left side sliding plate and the right side sliding plate are symmetrically arranged in a left-right mode, a left displacement sensor and a right displacement sensor are arranged on the rack, the left displacement sensor and the right displacement sensor are both located between the left side sliding plate and the right side sliding plate and are symmetrically arranged, the left displacement sensor is used for detecting the displacement of the left side sliding plate, the right displacement sensor is used for detecting the displacement of the right side sliding plate, the driving mechanism is arranged on one side, away from the left displacement sensor, of the left side sliding plate and the right side sliding plate, and the driving mechanism is used;

the middle parts of the left side sliding plate and the right side sliding plate, which are close to one end of the automobile straightening assembly, are connected with movable plates through connecting rods, the width of each movable plate is the same as that of the left side sliding plate, and the middle parts of the two movable plates, which are close to one end of the automobile straightening assembly, are provided with the positioning sliding mechanisms;

the automobile straightening assembly comprises a front wheel straightening assembly and a rear wheel straightening assembly which are sequentially arranged on the rack from front to back, the front wheel straightening assembly and the rear wheel straightening assembly are identical in structure, the front wheel straightening assembly comprises a straightening rod a, a straightening rod b and a shearing mechanism a, the straightening rod a and the straightening rod b are arranged in parallel from left to right, the shearing mechanism a is arranged between the straightening rod a and the straightening rod b, one end of the left side of the shearing mechanism a is in sliding connection with the straightening rod a, the other end of the left side of the shearing mechanism a is hinged with the straightening rod a, one end of the right side of the shearing mechanism a is in sliding connection with the straightening rod b, the other end of the shearing mechanism a is hinged with the straightening rod b, a sliding groove a is horizontally formed in the rack, the sliding groove a is located right below the straightening rod a, sliding grooves b are symmetrically formed in two sides of the sliding groove a, and the sliding grooves b are arranged in parallel with the sliding groove a, the bottoms of the correcting rod a and the correcting rod b are both connected with the sliding chute a and the sliding chute b in a sliding manner through upright columns, an air cylinder is arranged in the sliding chute a, and two ends of the air cylinder are respectively fixed with the two upright columns in the sliding chute b;

the induction assembly comprises two bases which are symmetrically arranged on the rack left and right, photoelectric switches are arranged on the bases, the height of each photoelectric switch is smaller than that of an automobile wheel, and a first sliding groove for the positioning sliding mechanism to move is formed in each base along the length direction;

the positioning sliding mechanism comprises a fixed cylinder and a sliding rod, the fixed cylinder is fixed at the middle of one end of the movable plate, the sliding rod can penetrate through the fixed cylinder in a sliding mode, a spring is arranged in the fixed cylinder, two ends of the spring are respectively connected with the fixed cylinder and the sliding rod, the sliding rod is far away from one end of the fixed cylinder and penetrates through the sliding groove, a magnet a is fixed in the sliding groove, the inner sides of the right rod a and the right rod b are opposite to each other, an electromagnet a is arranged on the inner side of the right rod a, and when the electromagnet a is powered on, the magnet a is in electromagnetic attraction with the electromagnet a, and the spring is in a stretching state.

Further, the driving mechanism comprises a screw rod, an electromagnet, a magnet, a push rod, a screw rod seat, a motor and a mounting plate, the mounting plate is fixed on the frame, the screw rod seat is fixed on the top of the mounting plate, the screw rod is rotationally connected with the screw rod seat through a bearing, the screw rod is vertically arranged with the left side sliding plate, the push rod is in threaded connection with the screw rod, the push rod is L-shaped and is arranged in parallel with the screw rod, the bottom of the push rod is contacted with the mounting plate, one end of the push rod, which is far away from the screw rod seat, is fixed with the electromagnet, the motor is fixed on the mounting plate, an output shaft of the motor is connected with one end of the screw rod, and the magnets are arranged on one sides of the left side sliding plate and the right side sliding plate, which are close to the push rod, and are positioned on the moving path of the push rod.

Further, the driving mechanism comprises a lead screw, a push rod, a lead screw seat, a motor, a mounting plate, a wedge block, a conical connecting block and a sliding assembly, the mounting plate is fixed on the frame, the lead screw seat is fixed at the top of the mounting plate, the lead screw is rotatably connected with the lead screw seat through a bearing, the lead screw is vertically arranged with the left side sliding plate, the push rod is in threaded connection with the lead screw, the push rod is L-shaped, the push rod is arranged in parallel with the lead screw, the bottom of the push rod is contacted with the mounting plate, the conical connecting block is fixed at one end of the push rod far away from the lead screw seat, the motor is fixed on the mounting plate, the output shaft of the motor is connected with one end of the lead screw, the connecting grooves are respectively formed at one side of the left side sliding plate and the right side sliding plate close to the push rod, the mounting holes, sliding assemblies are fixed in the two mounting holes, the sliding assemblies are connected with the wedge-shaped blocks, and one ends, provided with wedge surfaces, of the wedge-shaped blocks extend into the connecting grooves;

the two sides of the wedge block are respectively provided with a first wedge surface and a first clamping plane, the conical connecting block is conical, one end of the large diameter of the conical connecting block is fixedly connected with the push rod, and a clamping plane is formed at the joint of the conical connecting block and the push rod.

Further, the sliding assembly includes electro-magnet, magnet and coupling spring, magnet is fixed in the mounting hole, the wedge is kept away from the one end of wedge face one is fixed with the electro-magnet, coupling spring sets up in the mounting hole, coupling spring's both ends respectively with wedge and magnet fixed connection, work as the electro-magnet with during the magnet electromagnetic separation, the toper connecting block is equipped with one side of joint plane one with joint plane adaptation joint, work as the electro-magnet with during the magnet electromagnetic separation, the toper connecting block not with the wedge contact.

Furthermore, a plurality of rolling shafts are arranged on two sides of the rack, and the left side sliding plate and the right side sliding plate are arranged on the rolling shafts.

Furthermore, the inner sides of the correcting rod a and the correcting rod b are provided with mounting grooves, the left end of the shear mechanism a is slidably arranged in the mounting groove in the correcting rod a, the right end of the shear mechanism a is slidably arranged in the mounting groove in the correcting rod b, the bottom of the mounting groove is provided with a sliding groove, the shear mechanism a is arranged at two ends in the mounting groove, and bearings are rotatably arranged in the sliding groove in a sliding mode.

Furthermore, a sliding groove is horizontally formed in one end, close to the left sliding plate, of the rack, and the left sliding plate and the right sliding plate can be slidably arranged in the sliding groove.

Furthermore, the upper end and the lower end in the sliding groove are provided with a plurality of balls, the balls are arranged at equal intervals along the length direction of the sliding groove, and the left side sliding plate and the right side sliding plate are arranged on the balls.

The invention has the beneficial effects that:

1. the utility model provides a car sideslip detects platform with automatic positioning function, is dialled when the car and is tentatively fixed a position left side slide and right side slide, then carries out the accurate positioning according to the wheel track of car front wheel, makes left side slide and right side slide can adjust according to the wheel track of car front wheel, makes two front wheels respectively in the central point department of putting of left side slide and right side slide go to make the car sideslip detect more fast and detect data more accurate.

2. The place ahead that sideslips the determine module is provided with the car and dials the subassembly, and the car is being sideslipped and is examined time measuring, dials the subassembly through the car earlier and put forward, drives into the sideslip and detects on the determine module that sideslips again, makes the detection data that sideslips more accurate, can put forward the car fast simultaneously, has practiced thrift the time of putting forward and the required space of putting forward of car.

Drawings

FIG. 1 is a flow chart of a method for detecting a side-slip test station of an automobile with an automatic positioning function according to the present invention;

FIG. 2 is a schematic view of an overall structure of a first embodiment of an automobile sideslip detection platform with an automatic positioning function according to the present invention;

FIG. 3 is a schematic view of an exemplary embodiment of a first exemplary embodiment of an automobile sideslip detection station with automatic positioning function according to the present invention;

FIG. 4 is a schematic structural diagram of a driving mechanism of an automobile sideslip detection platform with automatic positioning function according to an embodiment of the present invention;

FIG. 5 is a schematic view of the internal structure of a positioning slide mechanism in an automobile sideslip detecting station with automatic positioning function according to the present invention;

FIG. 6 is a perspective view of an automobile alignment assembly in an automobile sideslip detection station with automatic positioning function according to the present invention;

FIG. 7 is an enlarged view taken at A in FIG. 6;

FIG. 8 is an enlarged view of FIG. 2 at B

FIG. 9 is a perspective view of an induction assembly in an automotive side-slip test station with automatic positioning capability in accordance with the present invention;

FIG. 10 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 11 is a schematic view of the second embodiment of the automobile sideslip detection station with automatic positioning function according to the present invention;

FIG. 12 is a schematic structural view of a second driving mechanism of an automobile sideslip detection platform with an automatic positioning function according to an embodiment of the present invention;

FIG. 13 is an enlarged view at C of FIG. 11;

in the figure, 1-a frame, 2-a side sliding detection component, 4-a sensing component, 6-a vehicle correcting component, 21-a left side sliding plate, 22-a right side sliding plate, 23-a connecting rod, 24-a driving mechanism, 25-a left displacement sensor, 26-a right displacement sensor, 27-a moving plate, 29-a chute I, 30-a screw rod, 31-an electromagnet, 32-a magnet, 33-a rolling shaft, 35-a rolling ball, 36-a chute, 37-a fixed cylinder, 38-a sliding rod, 39-a spring, 40-a magnet a, 41-a base, 42-a photoelectric switch, 43-an electromagnet a, 44-a push rod, 45-a screw rod seat, 46-a motor, 47-a mounting plate, 48-a wedge block, 49-a conical connecting block, 50-connecting groove, 51-mounting hole, 52-wedge surface I, 53-clamping plane I, 56-clamping plane, 57-connecting spring, 63-front wheel correcting component, 64-rear wheel correcting component, 65-correcting rod b, 66-correcting rod a, 67-shearing mechanism a, 68-sliding groove a, 69-upright column, 70-sliding groove b, 71-air cylinder, 72-mounting groove and 73-sliding groove.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

As shown in fig. 1, a method for detecting a vehicle sideslip detection station with an automatic positioning function includes the following steps:

s1, acquiring a zero position; when the cylinder 71 is not operated, the original position of the aligning rod a66 is taken as the zero point position of the left side sliding plate 21, the original position of the aligning rod b65 is taken as the zero point position of the right side sliding plate 22, the two electromagnets a43 and the two electromagnets 31 are energized through the control system, one motor 46 close to the left side sliding plate 21 rotates to drive one lead screw 30 to rotate, so as to drive one push rod 44 to move forward, the electromagnet 31 on one push rod 44 is electromagnetically attracted with the magnet 32, the left side sliding plate 21 is pushed to move, the other motor 46 close to the right side sliding plate 22 rotates to drive the other lead screw 30 to rotate, so as to drive the other push rod 44 to move forward, the electromagnet 31 on the other push rod 44 is electromagnetically attracted with the magnet 32, the right side sliding plate 22 is pushed to move, and further the fixed cylinders 37 on the two moving plates 27 move in the first sliding chute 29, when the electromagnet a40 on the left side sliding plate 21 is electrically, the motor 46 for controlling the left slide plate 21 rotates reversely to drive a push rod 44 to move back to the initial position, and simultaneously a corresponding electromagnet 31 is powered off, when a magnet a40 on the right slide plate 22 and an electromagnet a43 on a poking rod b65 are electromagnetically attracted, the motor 46 for controlling the right slide plate 22 rotates reversely to drive another push rod 44 to move back to the initial position, and simultaneously another corresponding electromagnet 31 is powered off, so that the zero point positions of the left slide plate 21 and the right slide plate 22 are positioned, the distance between the left slide plate 21 and the left displacement sensor 25 at the zero point position is obtained through the left displacement sensor 25, the position is marked as Y1, the distance between the right slide plate 22 and the right displacement sensor 26 at the zero point position is obtained through the right displacement sensor 26, and the position is marked as Y2;

s2, straightening the automobile and initially positioning the front wheel; when an automobile drives into the automobile correcting assembly 6, the correcting rod a66 and the correcting rod b65 are driven by the air cylinder 71 to move to correct the automobile, meanwhile, the correcting rod a66 and the correcting rod b65 drive the left sliding plate 21 and the right sliding plate 22 to move through the positioning sliding mechanism, after the automobile is corrected, the initial positioning of the left sliding plate 21 and the right sliding plate 22 is completed, the distance between the left sliding plate 21 and the left displacement sensor 25 at the initial positioning position is obtained through the left displacement sensor 25, the position is marked as X1, the distance between the right sliding plate 22 and the right displacement sensor 26 at the initial positioning position is obtained through the right displacement sensor 26, and the position is marked as X2;

s3, accurately positioning the front wheels of the automobile; inputting the type of the automobile wheel into a control system to obtain the width of the type of the automobile wheel, wherein the width is marked as X, X/2 is the distance between the left side sliding plate 21 and the right side sliding plate 22 which needs to move outwards, starting the two motors 46, simultaneously electrifying the electromagnet 31, powering off the electromagnet a43, driving the left side sliding plate 21 and the right side sliding plate 22 to move through the electromagnetic attraction of the electromagnet 31 and the magnet 32, respectively detecting the moving distance of the left side sliding plate 21 and the right side sliding plate 22 through the left displacement sensor 25 and the right displacement sensor 26, powering off the electromagnet 31 after the left side sliding plate 21 and the right side sliding plate 22 continue to slide outwards for the distance of X/2, reversely rotating the two motors 46 to drive the push rod 44 to move to the original position, thereby realizing the accurate positioning of the two front wheels of the automobile, and enabling the two front wheels to respectively run on the central positions of the left side sliding plate 21, the sideslip detection data are more accurate, at the moment, the distance between the left side sliding plate 21 and the left displacement sensor 25 is X1+ X/2, and the distance between the right side sliding plate 22 and the right displacement sensor 26 is X2+ X/2;

s4, detecting sideslip data; two front wheels of the automobile are respectively driven on the left side sliding plate 21 and the right side sliding plate 22 in a straight line, the left side sliding plate 21 and the right side sliding plate 22 are laterally moved on the frame 1 due to the sideslip of the front wheels, the distance from the left side sliding plate 21 is detected by the left displacement sensor 25 and is marked as Z1, then Z1- (X1 + X/2) is the sideslip value of the left front wheel of the automobile, the distance from the right side sliding plate 22 is detected by the right displacement sensor 26 and is marked as Z2, and then Z2- (X2 + X/2) is the sideslip value of the right front wheel of the automobile;

s5, resetting; the automobile correcting component 6 returns to the original position through the contraction of the air cylinder 71, the two motors 46 are started, the electromagnet 31 is powered on, the left side sliding plate 21 and the right side sliding plate 22 are driven to return to each zero position through the electromagnetic attraction of the electromagnet 31 and the magnet 32, namely, the left side sliding plate 21 returns to the Y1 position, the right side sliding plate 22 returns to the Y2 position, finally, the electromagnet 31 is powered off, and the two push rods 44 return to the original position.

As shown in fig. 2 to 13, an automobile sideslip detection platform with an automatic positioning function comprises a rack 1, a sideslip detection assembly 2, an induction assembly 4 and an automobile straightening assembly 6, wherein the rack 1 is sequentially provided with the automobile straightening assembly 6, the induction assembly 4 and the sideslip detection assembly 2 from front to back, and the sideslip detection assembly 2 is connected with the automobile straightening assembly 6 through a positioning sliding mechanism;

the induction component 4 comprises two bases 41 which are arranged on the rack 1 in a bilateral symmetry manner, a photoelectric switch 42 is arranged on each base 41, the height of each photoelectric switch 42 is smaller than that of an automobile wheel, and a first sliding groove 29 for positioning a sliding mechanism to move is formed in each base 41 in the length direction;

the device also comprises a control system, and the photoelectric switch 42, the motor 46, the electromagnet 31, the left displacement sensor 25, the right displacement sensor 26 and the electromagnet a43 are all electrically connected with the control system.

On the car entered frame 1, the front wheel of car was responded to by photoelectric switch 42, the car stops, then set aside subassembly 6 through the car and put the car into alignment, make the front and back wheel perpendicular to left side slide 21 and the right side slide 22 of car enter, drive the motion of the detection component 2 that sideslips through location slide mechanism simultaneously and carry out preliminary location, then carry out the accurate positioning to the detection component 2 that sideslips, the location is accomplished the back, the front wheel of car enters on the detection component 2 that sideslips, the completion detects the sideslip of car front wheel, the detection that sideslips of messenger's car is more accurate.

As shown in fig. 2 and fig. 3, the side-sliding detecting assembly 2 includes a left slide plate 21, a right slide plate 22 and a driving mechanism 24, the left slide plate 21 and the right slide plate 22 are both arranged on the frame 1 in a left-right sliding manner, the left slide plate 21 and the right slide plate 22 are symmetrically arranged in a left-right manner, the frame 1 is provided with a left displacement sensor 25 and a right displacement sensor 26, the left displacement sensor 25 and the right displacement sensor 26 are both arranged between the left slide plate 21 and the right slide plate 22 and symmetrically arranged, the left displacement sensor 25 is used for detecting a displacement of the left slide plate 21, the right displacement sensor 26 is used for detecting a displacement of the right slide plate 22, the driving mechanism 24 is arranged on a side of the left slide plate 21 and a side of the right slide plate 22 away from the left displacement sensor 25, and;

a plurality of rollers 33 are arranged on both sides of the frame 1, and the left side sliding plate 21 and the right side sliding plate 22 are both arranged on the rollers 33.

The lateral movement of the left slide plate 21 and the right slide plate 22 is achieved by rollers 33, and it should be noted that the axes of the rollers 33 are parallel to the longitudinal direction of the left slide plate 21 and the right slide plate 22.

The middle parts of the left side sliding plate 21 and the right side sliding plate 22, which are close to one end of the automobile straightening assembly 6, are connected with moving plates 27 through connecting rods 23, the width of each moving plate 27 is the same as that of the left side sliding plate 21, and the middle parts of the two moving plates 27, which are close to one end of the automobile straightening assembly 6, are provided with positioning sliding mechanisms;

two conditions are required to be met in order to realize that the two front wheels respectively run on the central positions of the left side sliding plate 21 and the right side sliding plate 22; the first condition is as follows: ensuring that the distance between the center line of the left slide plate 21 in the length direction and the center line of the right slide plate 22 in the length direction is equal to the wheel track; and a second condition: meanwhile, the symmetry line between the left side sliding plate 21 and the right side sliding plate 22 is collinear with the central line of the wheel track, so that the automobile can be ensured to accurately run on the central positions of the left side sliding plate 21 and the right side sliding plate 22 after the two conditions are met, the influence of gravity on the sideslip value is avoided, and the measured sideslip data is more accurate.

The driving mechanism 24 disclosed in the first embodiment has the advantages of simple structure, high response speed and the like, but has the defect of low connection strength with the left side sliding plate 21 and the right side sliding plate 22, so that the driving mechanism is suitable for a small-sized sideslip detection platform, the driving mechanism disclosed in the second embodiment has high connection strength, can drive the left side sliding plate 21 and the right side sliding plate 22 with large weight to slide, but has a relatively complex structure, is relatively slow in connection speed compared with the first embodiment, is suitable for installation and application of a large-sized sideslip detection platform, and the driving mechanism 24 of the two embodiments is explained below respectively:

the first embodiment is as follows: as shown in fig. 1 and 4, the driving mechanism 24 includes a screw rod 30, an electromagnet 31, a magnet 32, a push rod 44, a screw rod seat 45, a motor 46 and a mounting plate 47, the mounting plate 47 is fixed on the frame 1, the screw rod seat 45 is fixed on the top of the mounting plate 47, the screw rod 30 is rotatably connected with the screw rod seat 45 through a bearing, the screw rod 30 is vertically arranged with the left side sliding plate 21, the push rod 44 is in threaded connection with the screw rod 30, the push rod 44 is in an "L" shape, the push rod 44 is arranged in parallel with the screw rod 30, the bottom of the push rod 44 is in contact with the mounting plate 47, one end of the push rod 44 far away from the screw rod seat 45 is fixed with the electromagnet 31, the motor 46 is fixed on the mounting plate 47, an output shaft of the motor 46 is connected with one end of the screw rod 30, and the sides of the;

the operation process of the driving mechanism 24 in the first embodiment is as follows: the motor 46 is started, the motor 46 drives the screw rod 30 to rotate, and the push rod 44 is in contact with the mounting plate 47, so that the rotational freedom of the push rod 44 is limited, the screw rod 30 and the push rod 44 form a screw rod nut pair, and the push rod 44 moves along the length direction of the screw rod 30; the forward rotation motor 46 drives the push rod 44 to move forward through the lead screw 30, i.e. to move close to the magnet 32, and through electromagnetic attraction between the electromagnet 31 and the magnet 32, the two driving mechanisms 24 respectively drive the left side sliding plate 21 and the right side sliding plate 22 to move, so that after the electromagnet 31 is powered off, the reverse rotation motor 46 rotates, so that the push rod 44 moves backward on the lead screw 30, i.e. moves away from the magnet 32, and the push rod 44 returns to the initial position. Because the electromagnet 31 is connected with the magnet 32 in an attracting mode, and the attracting strength of the electromagnet 31 and the magnet 32 is small, the connecting strength of the push rod with the left side sliding plate 21 and the right side sliding plate 22 is low, and the device is not suitable for a large side sliding detection table.

As shown in fig. 5 to 10, the vehicle straightening assembly 6 includes a front wheel straightening assembly 63 and a rear wheel straightening assembly 64 which are sequentially arranged on the frame 1 from front to back, the front wheel straightening assembly 63 and the rear wheel straightening assembly 64 have the same structure, the front wheel straightening assembly 63 includes a straightening rod a66, a straightening rod b65 and a scissor mechanism a67, the straightening rod a66 and the straightening rod b65 are arranged in parallel from left to right, a scissor mechanism a67 is arranged between the straightening rod a66 and the straightening rod b65, one end of the left side of the scissor mechanism a67 is slidably connected with the straightening rod a66, the other end of the left side of the scissor mechanism a66 is hinged with the straightening rod a66, one end of the right side of the scissor mechanism a67 is slidably connected with the straightening rod b65, the other end of the right side of the scissor mechanism a 65 is hinged with the straightening rod b65, a chute 68 is horizontally arranged on the frame 1, the chute a68 is located right of the straightening rod a66, two sides of the chute a68 are symmetrically provided with chutes 70, a b 53, a chute 8653 is arranged in parallel with a chute 68, and a chute 8672 is connected with a upright post 8672 through, an air cylinder 71 is arranged in the sliding groove a68, and two ends of the air cylinder 71 are respectively fixed with the two upright posts 69 in the sliding groove b 70;

the automobile is straightened through the automobile straightening component 6, so that the detection result is more accurate, and the specific implementation mode is as follows: when the automobile runs onto the automobile correcting assembly 6, at this time, the front wheel correcting assembly 63 and the rear wheel correcting assembly 64 are located between wheels on two sides of the automobile, the air cylinder 71 is started, if the extending end of the air cylinder is connected with the upright column 69 on the correcting rod a66, the air cylinder 71 firstly drives the correcting rod a66 to move along the directions of the sliding groove a68 and the sliding groove b70, until the correcting rod a66 abuts against the wheels, the air cylinder 71 continues to extend, the shearing type mechanism a67 drives the correcting rod b65 to move until the correcting rod b65 abuts against the wheels on the other side, the air cylinder 71 continues to extend, the wheels are extruded by the correcting rod a66 and the correcting rod b65, so that the wheels are flush with the correcting rod a66 and the correcting rod b65, and a correcting effect is achieved.

As shown in fig. 5, the positioning sliding mechanism includes a fixed cylinder 37 and a sliding rod 38, the fixed cylinder 37 is fixed in the middle of one end of the moving plate 27, the sliding rod 38 is slidably inserted into the fixed cylinder 37, a spring 39 is disposed in the fixed cylinder 37, two ends of the spring 39 are respectively connected with the fixed cylinder 37 and the sliding rod 38, one end of the sliding rod 38 away from the fixed cylinder 37 passes through the first sliding slot 29 and is fixed with a magnet a40, the inner sides of the straightening rod a66 and the straightening rod b65 opposite to each other are both provided with an electromagnet a43, when the electromagnet a43 is energized, the magnet a40 and the electromagnet a43 are electromagnetically attracted, and the spring 39 is in a stretching state.

When the automobile is dialed, the zero positions of the left side sliding plate 21 and the right side sliding plate 22 on the side sliding detection assembly 2 are firstly positioned, and the positioning mode is as follows: when the cylinder 71 is not operated, the original position of the aligning rod a66 is taken as the zero position of the left side sliding plate 21, the original position of the aligning rod b65 is taken as the zero position of the right side sliding plate 22, the two electromagnets a43 and the two electromagnets 31 are energized through the control system, one motor 46 close to the left side sliding plate 21 rotates to drive one lead screw 30 to rotate, so as to drive one push rod 44 to move forward, the electromagnet 31 on one push rod 44 is electromagnetically attracted with the magnet 32, the left side sliding plate 21 is pushed to move, the other motor 46 close to the right side sliding plate 22 rotates to drive the other lead screw 30 to rotate, so as to drive the other push rod 44 to move forward, the electromagnet 31 on the other push rod 44 is electromagnetically attracted with the magnet 32, the right side sliding plate 22 is pushed to move, and the fixed cylinders 37 on the two moving plates 27 are driven to move in the first sliding chute 29, when the control system receives the electromagnet attraction signals of the electromagnet a40 on the left side sliding, the motor 46 for controlling the left slide plate 21 rotates reversely to drive a push rod 44 to move back to the initial position, and simultaneously a corresponding electromagnet 31 is powered off, when the control system receives an electromagnetic attraction signal of a magnet a40 on the right slide plate 22 and an electromagnet a43 on a poking rod b65, the motor 46 for controlling the right slide plate 22 rotates reversely to drive another push rod 44 to move back to the initial position, and simultaneously another corresponding electromagnet 31 is powered off, so as to complete the positioning of the zero point positions of the left slide plate 21 and the right slide plate 22, the left displacement sensor 25 obtains the distance between the left slide plate 21 and the left displacement sensor 25 at the zero point position, the position is marked as Y1, the right displacement sensor 26 obtains the distance between the right slide plate 22 and the right displacement sensor 26 at the zero point position, the position is marked as Y2, so that the poking rod a66 and the poking rod b65 respectively drive the left slide plate 21 and the right slide plate 22 to move through the electromagnetic attraction of the electromagnet a43 and the magnet a40 Performing initial positioning on the front wheels of the automobile, obtaining the distance between the left sliding plate 21 and the left displacement sensor 25 at the initial positioning position through the left displacement sensor 25, wherein the position is marked as X1, obtaining the distance between the right sliding plate 22 and the right displacement sensor 26 at the initial positioning position through the right displacement sensor 26, wherein the position is marked as X2, and respectively driving the left sliding plate 21 and the right sliding plate 22 to move through a correcting rod a66 and a correcting rod b65 so as to ensure that the symmetry line of the left sliding plate 21 and the right sliding plate 22 is collinear with the center line of the wheel distance and meet the condition II; it is worth noting that, because the automobile may be modified or for other reasons, the front wheel or the rear wheel of the automobile is not matched with the model of the automobile, so that the wheel track under the model of the automobile is not necessarily the actual wheel track, and after the left side sliding plate 21 and the right side sliding plate 22 are driven to move by the automobile correcting component 6, the actual wheel track can be obtained without the automobile wheel track, the model of the wheel corresponds to the wheel width parameter, only the width of one wheel is moved on the basis of primary positioning, namely, the distance between the center line of the length direction of the left side sliding plate 21 and the center line of the length direction of the right side sliding plate 22 is equal to the actual wheel track, so that the condition one is met, and the sideslip detection value is more accurate;

after the preliminary positioning is finished, the left sliding plate 21 and the right sliding plate 22 are accurately positioned through the driving mechanism 24, the accurate positioning ensures that the distance between the central line of the length direction of the left sliding plate 21 and the central line of the length direction of the right sliding plate 22 is equal to the actual wheel track, parameters of wheels of different types are stored in a control system, the wheel type of the automobile to be detected is output into the control system, so that the width of the front wheel of the automobile of the type is obtained, on the basis of the preliminary positioning, the left sliding plate 21 and the right sliding plate 22 relatively move by the width of one wheel, namely, the distance between the central line of the length direction of the left sliding plate 21 and the central line of the length direction of the right sliding plate 22 is equal to the wheel track, the width of the wheel is marked as X, X/2 is the distance that the left sliding plate 21 and the right sliding plate 22 need to laterally move, the electromagnet a43 is powered off, the electromagnet 31 and the magnet 32 are electromagnetically attracted to drive the left side sliding plate 21 and the right side sliding plate 22 to move, the left side displacement sensor 25 and the right side displacement sensor 26 respectively detect the moving distance of the left side sliding plate 21 and the right side sliding plate 22, when the left side sliding plate 21 and the right side sliding plate 22 continuously slide outwards for an X/2 distance, the electromagnet 31 is powered off, the two motors 46 rotate reversely to drive the push rod 44 to move to the original position, so that the accurate positioning of the two front wheels of the automobile is realized, the two front wheels respectively drive on the central positions of the left side sliding plate 21 and the right side sliding plate 22, the sideslip detection data is more accurate, at the moment, the distance between the left side sliding plate 21 and the left displacement sensor 25 is X1+ X/2, and the distance between the right side sliding plate 22 and the right displacement sensor 26;

as shown in fig. 11 to 13, the second embodiment: the driving mechanism 24 comprises a screw rod 30, a push rod 44, a screw rod seat 45, a motor 46, a mounting plate 47, a wedge block 48, a conical connecting block 49 and a sliding assembly, the mounting plate 47 is fixed on the frame 1, the screw rod seat 45 is fixed on the top of the mounting plate 47, the screw rod 30 is rotatably connected with the screw rod seat 45 through a bearing, the screw rod 30 is vertically arranged with the left side sliding plate 21, the push rod 44 is in threaded connection with the screw rod 30, the push rod 44 is L-shaped, the push rod 44 is arranged in parallel with the screw rod 30, the bottom of the push rod 44 is contacted with the mounting plate 47, the conical connecting block 49 is fixed at one end of the push rod 44 far away from the screw rod seat 45, the motor 46 is fixed on the mounting plate 47, the output shaft of the motor 46 is connected with one end of the screw rod 30, the side of the left side sliding plate 21 and the side sliding plate 22 near the push rod 44, the sliding component is connected with a wedge block 48, and one end of the wedge block 48, which is provided with a wedge surface, extends into the connecting groove 50;

two sides of the wedge block 48 are respectively provided with a wedge surface I52 and a clamping plane I53, the conical connecting block 49 is conical, one end of the conical connecting block 49 with a large diameter is fixedly connected with the push rod 44, and a clamping plane 56 is formed at the joint of the conical connecting block 49 and the push rod 44.

The sliding assembly comprises an electromagnet 31, a magnet 32 and a connecting spring 57, the magnet 32 is fixed in the mounting hole 51, the electromagnet 31 is fixed at one end, away from the wedge-shaped surface I52, of the wedge-shaped block 48, the connecting spring 57 is arranged in the mounting hole 51, two ends of the connecting spring 57 are fixedly connected with the wedge-shaped block 48 and the magnet 32 respectively, when the electromagnet 31 is electromagnetically separated from the magnet 32, one side, provided with the clamping plane I53, of the conical connecting block 49 is in adaptive clamping connection with the clamping plane 56, and when the electromagnet 31 is electromagnetically attracted with the magnet 32, the conical connecting block 49 is not in contact with the wedge-shaped block 48.

The working process of the driving mechanism 24 in the second embodiment is as follows: the motor 46 is started, the motor 46 drives the screw rod 30 to rotate, and the push rod 44 is in contact with the mounting plate 47, so that the rotational freedom of the push rod 44 is limited, the screw rod 30 and the push rod 44 form a screw rod nut pair, and the push rod 44 moves along the length direction of the screw rod 30; the forward rotation motor 46 drives the push rod 44 to move forward through the screw rod 30, drives the conical connecting block 49 to move close to the wedge block 48, when the conical surface of the conical connecting block 49 is in contact with the first wedge surface 52, under the action of the first wedge surface 52, the wedge block 48 is arranged close to the magnet 32 under the action of continuous force applied by the conical connecting block 49 to compress the connecting spring 57, when the conical connecting block 49 passes through the wedge block 48, the wedge block 48 moves to the original position under the action of the connecting spring 57, after the reverse rotation motor 46, the first clamping plane 53 is abutted to the clamping plane 56, clamping of the push rod 44 with the left side sliding plate 21 or the right side sliding plate 22 is completed, and at the moment, the push rod 44 moves to drive the left side sliding plate 21 or the right side sliding; the electromagnet 31 is electrified to be electromagnetically attracted with the magnet 32, at the moment, the wedge-shaped block 48 moves close to the magnet 32, the bottom of the wedge-shaped block 48 is not contacted with the conical connecting block 49, the motor 46 is reversely rotated, and when the push rod 44 moves back, the conical connecting block 49 is withdrawn from the connecting groove 50 due to the fact that the push rod is not blocked by the wedge-shaped block 48, and the left side sliding plate 21 or the right side sliding plate 22 is separated; in order to ensure that the left sliding plate 21 or the right sliding plate 22 is pushed to move when the tapered connecting block 49 is clamped with the wedge block 48, electromagnets a and magnets a can be arranged between the top of the left sliding plate 21 and the rack 1 and between the bottom of the right sliding plate 22 and the rack 1, during clamping, the left sliding plate 21 and the right sliding plate 22 are fixed on the rack 1 through electromagnetic attraction of the electromagnets a and the magnets a, so that the tapered connecting block 49 and the wedge block 48 can be clamped smoothly, the electromagnets a and the magnets a are separated after clamping is completed, and the left sliding plate 21 and the right sliding plate 22 can move on the rack 1.

The detection method of the second embodiment is as follows: s1, acquiring a zero position; when the cylinder 71 is not operated, the original position of the aligning rod a66 is taken as the zero point position of the left side sliding plate 21, the original position of the aligning rod b65 is taken as the zero point position of the right side sliding plate 22, the control system energizes the two electromagnets a43, the motor 46 close to the left side sliding plate 21 rotates to drive the screw rod 30 to rotate, so as to drive the push rod 44 to move forward, so that the tapered connecting block 49 on the push rod 44 is clamped with the wedge block 48, the left side sliding plate 21 is pushed to move, the other motor 46 close to the right side sliding plate 22 rotates to drive the other screw rod 30 to rotate, so as to drive the other push rod 44 to move forward, so that the tapered connecting block 49 on the other push rod 44 is clamped with the wedge block 48, the right side sliding plate 22 is pushed to move, so as to drive the fixed cylinders 37 on the two moving plates 27 to move in the first sliding grooves 29, when the electromagnet a40 on, the motor 46 used for controlling the left slide plate 21 rotates reversely, drives a push rod 44 to move back to the initial position, meanwhile, a corresponding electromagnet 31 is electrified, when a magnet a40 on the right slide plate 22 and an electromagnet a43 on a poking rod b65 are electromagnetically attracted, the motor 46 used for controlling the right slide plate 21 rotates reversely, drives another push rod 44 to move back to the initial position, meanwhile, another corresponding electromagnet 31 is electrified, thereby completing the positioning of the zero point positions of the left slide plate 21 and the right slide plate 22, the distance between the left slide plate 21 and the left displacement sensor 25 at the zero point position is obtained through the left displacement sensor 25, the position is marked as Y1, the distance between the right slide plate 22 and the right displacement sensor 26 at the zero point position is obtained through the right displacement sensor 26, and the position is marked as Y2;

s3, accurately positioning the front wheels of the automobile; inputting the type of the automobile wheel into a control system to obtain the width of the type of the automobile wheel, wherein the width is marked as X, X/2 is the distance that the left sliding plate 21 and the right sliding plate 22 need to move outwards, starting the two motors 46, simultaneously powering off the electromagnet 31, powering off the electromagnet a43, driving the left sliding plate 21 and the right sliding plate 22 to move through the clamping connection of the tapered connecting block 49 and the wedge block 48, respectively detecting the moving distance of the left sliding plate 21 and the right sliding plate 22 through the left displacement sensor 25 and the right displacement sensor 26, after the left sliding plate 21 and the right sliding plate 22 continue to slide outwards for the distance of X/2, powering on the electromagnet 31, reversely rotating the two motors 46 to drive the push rod 44 to move to the original position, thereby realizing the accurate positioning of the two front wheels of the automobile, and enabling the two front wheels to respectively run on the central positions of the left sliding plate 21 and the right sliding plate, the sideslip detection data are more accurate, at the moment, the distance between the left side sliding plate 21 and the left displacement sensor 25 is X1+ X/2, and the distance between the right side sliding plate 22 and the right displacement sensor 26 is X2+ X/2;

s5, resetting; the automobile correcting assembly 6 returns to the original position through the contraction of the air cylinder 71, the two motors 46 are started, the electromagnet 31 is powered off, the left sliding plate 21 and the right sliding plate 22 are driven to return to the zero positions through the clamping of the conical connecting block 49 and the wedge block 48, namely, the left sliding plate 21 returns to Y1, the right sliding plate 22 returns to Y2, and the two push rods 44 return to the original position.

When the automobile is accurately positioned, the distance to be moved is short, the moving precision of the traditional driving devices such as an air cylinder, an electric push rod and the like is low, and the single moving distance is too large, so that when the left side sliding plate 21 and the right side sliding plate 22 are driven to move, the moving distance is easy to exceed X1+ X/2 or X2+ X/2, and the automobile can be moved to an accurate value only by multiple adjustments.

Furthermore, mounting grooves 72 are formed in the inner sides of the straightening rod a66 and the straightening rod b65, one end of the left side of the scissor mechanism a67 is slidably arranged in the mounting groove 72 on the straightening rod a66, one end of the right side of the scissor mechanism a67 is slidably arranged in the mounting groove 72 on the straightening rod b65, a sliding groove 73 is formed in the bottom of the mounting groove 72, bearings are rotatably arranged at two ends of the scissor mechanism a67 arranged in the mounting groove 72, and the bearings are slidably arranged in the sliding groove 73. The sliding connection between the scissor mechanism a67 and the aligning rod a66 and the aligning rod b65 is realized through the arrangement of the mounting groove 72 and the sliding groove 73, and meanwhile, the sliding friction is changed into rolling friction through the matching of the bearing and the sliding groove 73, so that the friction force between the scissor mechanism a67 and the aligning rod a66 and the aligning rod b65 is reduced, and the sliding effect is better.

Furthermore, a sliding groove 36 is horizontally formed at one end of the frame 1 close to the left sliding plate 21, and both the left sliding plate 21 and the right sliding plate 22 can be slidably disposed in the sliding groove 36.

Further, the upper end and the lower end inside the sliding chute 36 are provided with a plurality of balls 35, the plurality of balls 35 are arranged at equal intervals along the length direction of the sliding chute 36, and the left side sliding plate 21 and the right side sliding plate 22 are both arranged on the balls 35.

Install left slide 21 and right slide 22 in spout 36, it is spacing to left slide 21 and right slide 22, make left side slide 21 and right side slide 22 under the effect of preceding directive wheel and back directive wheel, can only move left or right, make the more accuracy of the volume of sideslipping that measures, change the sliding friction of left side slide 21 and right side slide 22 and spout 36 into rolling friction through ball 35 simultaneously, the influence of frictional force has been reduced, make the volume of sideslipping that detects more accurate.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A detection method of an automobile sideslip detection platform with an automatic positioning function is characterized by comprising the following steps:

s1, acquiring a zero position; when the cylinder (71) does not work, the original position of the correcting rod a (66) is taken as the zero position of the left sliding plate (21), the original position of the correcting rod b (65) is taken as the zero position of the right sliding plate (22), the two electromagnets a (43) and the two electromagnets (31) are electrified through the control system, one motor (46) close to the left sliding plate (21) rotates to drive one screw rod (30) to rotate, so that one push rod (44) is driven to move forwards, the electromagnet (31) on one push rod (44) is electromagnetically attracted with the magnet (32) to drive the left sliding plate (21) to move, the other motor (46) close to the right sliding plate (22) rotates to drive the other screw rod (30) to rotate, so that the other push rod (44) is driven to move forwards, the electromagnet (31) on the other push rod (44) is electromagnetically attracted with the magnet (32) to drive the right sliding plate (22) to move, and then the fixed cylinders (37) on the two moving plates (27) are driven to move in the first sliding groove (29), when the magnet a (40) on the left sliding plate (21) and the electromagnet a (43) on the right poking rod a (66) are electromagnetically attracted, the motor (46) for controlling the left sliding plate (21) reversely rotates to drive a push rod (44) to move back to the initial position, and simultaneously the corresponding electromagnet (31) is powered off, when the magnet a (40) on the right sliding plate (22) and the electromagnet a (43) on the right poking rod b (65) are electromagnetically attracted, the motor (46) for controlling the right sliding plate (22) reversely rotates to drive the other push rod (44) to move back to the initial position, and simultaneously the corresponding other electromagnet (31) is powered off, so that the positions of the left sliding plate (21) and the right sliding plate (22) are positioned, and the space between the left sliding plate (21) and the left displacement sensor (25) at the zero position is obtained through the left displacement sensor (25) The distance is marked as Y1, the distance between the right side sliding plate (22) and the right displacement sensor (26) at the zero point position is obtained through the right displacement sensor (26), and the position is marked as Y2;

s2, straightening the automobile and initially positioning the front wheel; the automobile is driven into the automobile correcting assembly (6), a correcting rod a (66) and a correcting rod b (65) are driven to move through an air cylinder (71) to correct the automobile, meanwhile, the correcting rod a (66) and the correcting rod b (65) drive the left sliding plate (21) and the right sliding plate (22) to move through a positioning sliding mechanism, after the automobile is corrected, the left sliding plate (21) and the right sliding plate (22) are preliminarily positioned, the distance between the left sliding plate (21) and the left displacement sensor (25) at the preliminarily positioned position is obtained through the left displacement sensor (25), the position is marked as X1, the distance between the right sliding plate (22) and the right displacement sensor (26) at the preliminarily positioned position is obtained through the right displacement sensor (26), and the position is marked as X2;

s3, accurately positioning the front wheels of the automobile; inputting the type of the automobile wheel into a control system to obtain the width of the type of the automobile wheel, wherein the width is marked as X, X/2 is the distance between a left side sliding plate (21) and a right side sliding plate (22) which need to move outwards, starting two motors (46), simultaneously electrifying an electromagnet (31), powering off an electromagnet a (43), driving the left side sliding plate (21) and the right side sliding plate (22) to move through the electromagnetic attraction of the electromagnet (31) and a magnet (32), respectively detecting the moving distance of the left side sliding plate (21) and the right side sliding plate (22) through a left displacement sensor (25) and a right displacement sensor (26), powering off the electromagnet (31) when the left side sliding plate (21) and the right side sliding plate (22) continue to slide outwards for the distance of X/2, driving a push rod (44) to move to the original position through the reverse rotation of the two motors (46), thereby realizing the accurate positioning of two front wheels of the automobile, two front wheels are respectively driven on the central positions of a left side sliding plate (21) and a right side sliding plate (22) to enable sideslip detection data to be more accurate, at the moment, the distance between the left side sliding plate (21) and a left displacement sensor (25) is X1+ X/2, and the distance between the right side sliding plate (22) and a right displacement sensor (26) is X2+ X/2;

s4, detecting sideslip data; the two front wheels of the automobile respectively run on a left sliding plate (21) and a right sliding plate (22) in a straight line, the left sliding plate (21) and the right sliding plate (22) move on a rack (1) due to the sideslip of the front wheels, the distance from the left sliding plate (21) is detected through a left displacement sensor (25) and is marked as Z1, Z1- (X1 + X/2) is the sideslip value of the left front wheel of the automobile, the distance from the right sliding plate (22) is detected through a right displacement sensor (26) and is marked as Z2, and Z2- (X35 2+ X/2) is the sideslip value of the right front wheel of the automobile;

s5, resetting; the automobile correcting assembly (6) returns to the original position through contraction of the air cylinder (71), the two motors (46) are started, the electromagnet (31) is electrified, the left side sliding plate (21) and the right side sliding plate (22) are driven to return to each zero position through electromagnetic attraction of the electromagnet (31) and the magnet (32), namely the left side sliding plate (21) returns to the Y1, the right side sliding plate (22) returns to the Y2, finally the electromagnet (31) is powered off, and the two push rods (44) return to the original position.

2. The automobile sideslip detection platform with the automatic positioning function is characterized by comprising a rack (1), a sideslip detection assembly (2), an induction assembly (4) and an automobile straightening assembly (6), wherein the automobile straightening assembly (6), the induction assembly (4) and the sideslip detection assembly (2) are sequentially arranged on the rack (1) from front to back, and the sideslip detection assembly (2) is connected with the automobile straightening assembly (6) through a positioning sliding mechanism;

the sideslip detection assembly (2) comprises a left side sliding plate (21), a right side sliding plate (22) and a driving mechanism (24), the left side sliding plate (21) and the right side sliding plate (22) can slide left and right and are arranged on the rack (1), the left side sliding plate (21) and the right side sliding plate (22) are arranged in a bilateral symmetry mode, a left displacement sensor (25) and a right displacement sensor (26) are arranged on the rack (1), the left displacement sensor (25) and the right displacement sensor (26) are both located between the left side sliding plate (21) and the right side sliding plate (22) and are symmetrically arranged, the left displacement sensor (25) is used for detecting the displacement of the left side sliding plate (21), the right displacement sensor (26) is used for detecting the displacement of the right side sliding plate (22), and one side of the left side sliding plate (21) and the right side sliding plate (22) far away from the left displacement sensor (25) is provided with the driving mechanism (24), the driving mechanism (24) is used for driving the left side sliding plate (21) and the right side sliding plate (22) to move;

the middle parts of the left side sliding plate (21) and the right side sliding plate (22) close to one end of the automobile straightening assembly (6) are connected with movable plates (27) through connecting rods (23), the width of each movable plate (27) is the same as that of the left side sliding plate (21), and the middle parts of the two movable plates (27) close to one end of the automobile straightening assembly (6) are provided with the positioning sliding mechanisms;

the automobile correcting component (6) comprises a front wheel correcting component (63) and a rear wheel correcting component (64) which are sequentially arranged on the rack (1) from front to back, the front wheel correcting component (63) and the rear wheel correcting component (64) are identical in structure, the front wheel correcting component (63) comprises a correcting rod a (66), a correcting rod b (65) and a shearing mechanism a (67), the correcting rod a (66) and the correcting rod b (65) are arranged in parallel from left to right, the shearing mechanism a (67) is arranged between the correcting rod a (66) and the correcting rod b (65), one end of the left side of the shearing mechanism a (67) is in sliding connection with the correcting rod a (66), the other end of the left side of the shearing mechanism a (67) is hinged with the correcting rod a (66), one end of the right side of the shearing mechanism a (67) is in sliding connection with the correcting rod b (65), and the other end of the right side of the shearing mechanism a (67) is hinged with the correcting rod b (65), a sliding groove a (68) is horizontally formed in the rack (1), the sliding groove a (68) is located under the correcting rod a (66), sliding grooves b (70) are symmetrically formed in two sides of the sliding groove a (68), the sliding grooves b (70) and the sliding groove a (68) are arranged in parallel, the bottoms of the correcting rod a (66) and the correcting rod b (65) are connected with the sliding groove a (68) and the sliding groove b (70) in a sliding mode through upright columns (69), an air cylinder (71) is arranged in the sliding groove a (68), and two ends of the air cylinder (71) are fixed to the two upright columns (69) in the sliding groove b (70) respectively;

the induction assembly (4) comprises two bases (41) which are arranged on the rack (1) in a bilateral symmetry mode, a photoelectric switch (42) is arranged on each base (41), the height of each photoelectric switch (42) is smaller than that of an automobile wheel, and a first sliding groove (29) used for the positioning sliding mechanism to move is formed in each base (41) along the length direction;

the utility model discloses a fixed position slide mechanism, including fixed section of thick bamboo (37) and slide bar (38), fixed section of thick bamboo (37) are fixed the middle part of movable plate (27) one end, slide bar (38) slidable wears to establish in fixed section of thick bamboo (37), be provided with spring (39) in fixed section of thick bamboo (37), the both ends of spring (39) respectively with fixed section of thick bamboo (37) and slide bar (38) are connected, slide bar (38) are kept away from the one end of fixed section of thick bamboo (37) is passed spout one (29) and is fixed with magnet a (40), set right pole a (66) and set right the relative inboard of pole b (65) all are provided with electro-magnet a (43), when electro-magnet a (43) circular telegram, magnet a (40) with electro-magnet a (43) electromagnetic attraction, spring (39) are in tensile state.

3. The automobile sideslip detection platform with the automatic positioning function according to claim 2, characterized in that the driving mechanism (24) comprises a lead screw (30), an electromagnet (31), a magnet (32), a push rod (44), a lead screw seat (45), a motor (46) and a mounting plate (47), the mounting plate (47) is fixed on the frame (1), the lead screw seat (45) is fixed at the top of the mounting plate (47), the lead screw (30) is rotatably connected with the lead screw seat (45) through a bearing, the lead screw (30) is vertically arranged with the left side sliding plate (21), the push rod (44) is in threaded connection with the lead screw (30), the push rod (44) is of an L shape, the push rod (44) is arranged in parallel with the lead screw (30), the bottom of the push rod (44) is in contact with the mounting plate (47), one end, far away from the screw rod seat (45), of the push rod (44) is fixed with the electromagnet (31), the motor (46) is fixed on the mounting plate (47), an output shaft of the motor (46) is connected with one end of the screw rod (30), the left side sliding plate (21) and the right side sliding plate (22) are close to one side of the push rod (44) and are provided with the magnet (32), and the magnet (32) is located on a moving path of the push rod (44).

4. The automobile sideslip detection platform with the automatic positioning function according to claim 2, characterized in that said driving mechanism (24) comprises a screw rod (30), a push rod (44), a screw rod seat (45), a motor (46), a mounting plate (47), a wedge block (48), a taper connecting block (49) and a sliding assembly, said mounting plate (47) is fixed on said frame (1), said screw rod seat (45) is fixed on the top of said mounting plate (47), said screw rod (30) is connected with said screw rod seat (45) through a bearing, said screw rod (30) is vertically arranged with said left side sliding plate (21), said push rod (44) is connected with said screw rod (30) by screw thread, said push rod (44) is 'L' shaped, said push rod (44) is arranged in parallel with said screw rod (30), the bottom of said push rod (44) is contacted with said mounting plate (47), one end, far away from the screw rod seat (45), of the push rod (44) is fixed with the conical connecting block (49), the motor (46) is fixed on the mounting plate (47), an output shaft of the motor (46) is connected with one end of the screw rod (30), one sides, close to the push rod (44), of the left side sliding plate (21) and the right side sliding plate (22) are respectively provided with a connecting groove (50), the upper end and the lower end of the inner wall of the connecting groove (50) are respectively provided with a mounting hole (51), sliding assemblies are respectively fixed in the two mounting holes (51), the sliding assemblies are connected with the wedge block (48), and one end, provided with a wedge surface, of the wedge block (48) extends into the connecting groove (50);

the both sides of wedge (48) are equipped with wedge face one (52) and joint plane one (53) respectively, toper connecting block (49) are conical, toper connecting block (49) major diameter's one end with push rod (44) fixed connection, toper connecting block (49) with the junction of push rod (44) is formed with a joint plane (56).

5. The automobile sideslip detection platform with the automatic positioning function according to claim 4, characterized in that the sliding assembly comprises an electromagnet (31), a magnet (32) and a connecting spring (57), the magnet (32) is fixed in the mounting hole (51), one end of the wedge-shaped block (48) far away from the wedge-shaped surface I (52) is fixed with the electromagnet (31), the connecting spring (57) is arranged in the mounting hole (51), two ends of the connecting spring (57) are respectively fixedly connected with the wedge-shaped block (48) and the magnet (32), when the electromagnet (31) is electromagnetically separated from the magnet (32), one side of the conical connecting block (49) provided with the clamping plane I (53) is clamped with the clamping plane (56) in an adaptive manner, and when the electromagnet (31) is electromagnetically attracted with the magnet (32), the conical connecting block (49) is not in contact with the wedge block (48).

6. The automobile sideslip detection platform with automatic positioning function according to claim 2 is characterized in that a plurality of rollers (33) are arranged on two sides of the frame (1), and the left side sliding plate (21) and the right side sliding plate (22) are installed on the rollers (33).

7. The automobile sideslip detection platform with the automatic positioning function according to claim 2, characterized in that mounting grooves (72) are formed in the inner sides of the correcting rod a (66) and the correcting rod b (65), one end of the left side of the scissor mechanism a (67) is slidably arranged in the mounting groove (72) in the correcting rod a (66), one end of the right side of the scissor mechanism a (67) is slidably arranged in the mounting groove (72) in the correcting rod b (65), a sliding groove (73) is formed in the bottom of the mounting groove (72), bearings are rotatably arranged at two ends of the scissor mechanism a (67) in the mounting groove (72), and the bearings are slidably arranged in the sliding groove (73).

8. The automobile sideslip detection platform with the automatic positioning function according to claim 2, characterized in that a sliding groove (36) is horizontally formed at one end of the frame (1) close to the left sliding plate (21), and both the left sliding plate (21) and the right sliding plate (22) can be slidably arranged in the sliding groove (36).

9. The automobile sideslip detection platform with the automatic positioning function according to claim 8, characterized in that a plurality of balls (35) are arranged at the upper end and the lower end inside the sliding chute (36), the balls (35) are arranged at equal intervals along the length direction of the sliding chute (36), and the left side sliding plate (21) and the right side sliding plate (22) are arranged on the balls (35).