CN110779709A

CN110779709A - Self calibration equipment of automobile centering device in ADAS calibration

Info

Publication number: CN110779709A
Application number: CN201911264254.3A
Authority: CN
Inventors: 胡春霞; 梁绍敏; 孙浩
Original assignee: Shandong Zhengneng Automobile Testing Equipment Co Ltd
Current assignee: Shandong Zhengneng Automobile Testing Equipment Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-02-11

Abstract

The invention relates to the technical field of automobile detection, in particular to a self-calibration device of an automobile centering device in ADAS calibration. The invention has novel design and simple principle, the supporting legs of the calibration frame are randomly placed on the roller of the centering device, the positioning pins are inserted into the positioning holes and the pin holes, the push rod is pushed out to center the calibration frame, the distance measuring sensor is electrified to measure the distance between the sensor and the inner side of the supporting legs, the centering state of the centering device can be conveniently, quickly and accurately judged, and the data of whether the centering device is centered or not and if the centering device is not centered, which side has larger error can be obtained from the result, the error caused by manual measurement is avoided, the adjustment direction and the size can be given, and the maintenance personnel can be guided to quickly repair the centering device.

Description

Self calibration equipment of automobile centering device in ADAS calibration

Technical Field

The invention relates to the technical field of automobile detection, in particular to self-calibration equipment of an automobile centering device in ADAS calibration.

Background

Research and application of Advanced Driving Assistance System (ADAS) technology is rapidly being carried out in various related fields, it can be said that automobiles are rapidly entering a completely new ADAS world, and the application scenario of ADAS requires that its related functions must be tested with sufficient reliability, aiming at ensuring that an automatic driving vehicle can safely run without risk, so that the test of an ADAS system becomes a problem which is currently concerned, the test (namely calibration) of the ADAS system mainly comprises the calibration of a front camera, a front radar, a look-around camera (AVM), a rear radar and the like of the automobile, the detection of the height of a wheel arch of the automobile body and other items, and each detection item aims at the premise that the center line of the automobile is coincident with the driving center line, the premise is usually realized by an automobile centering device (another name is a centering mechanism), and the automobile centering device generally realizes the equal pushing distance of the left side and the right side by pushing a connecting rod mechanism by a cylinder. The accuracy of the aligners directly affects the ADAS calibration results, and therefore, the aligners need to be calibrated at intervals of several months.

However, the existing calibration equipment is troublesome to use, and the calibration state of the calibrator cannot be quickly and accurately determined, so that the calibration accuracy is seriously influenced. Accordingly, those skilled in the art have provided a self-calibration apparatus for a vehicle plummer in ADAS calibration to solve the above-mentioned problems in the background art.

Disclosure of Invention

The invention aims to provide a self-calibration device of an automobile centering device in ADAS calibration, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the calibration device comprises a calibration frame, wherein a rear straightening device is arranged at the position, located at the rear end, of the lower portion of the calibration frame, a front straightening device is arranged at the position, located at the front end, of the lower portion of the calibration frame, straightening device shields are fixed at middle sections of the positions, located at the upper ends of the front straightening device and the rear straightening device, of the straightening device shields, push rods are arranged at positions, located at two sides, of the inner portions of the straightening device shields, two hydraulic cylinders which are arranged oppositely are fixedly installed at the bottom ends of the inner portions of the straightening device shields, a distance measuring sensor which is electrically connected with an external control interface is fixedly installed at the position, located at the center line, of the top ends of the inner portions of the straightening device shields, connecting rods connected with the push rods are fixed to the telescopic ends of the hydraulic cylinders, a convex block is fixed at the position, and a positioning hole is formed in the upper surface of the convex block.

As a still further scheme of the invention: the calibration frame comprises a frame, two front supporting legs are fixed at positions, corresponding to the front centering device, below the front end of the frame, two rear supporting legs are fixed at positions, corresponding to the rear centering device, below the rear end of the frame, reinforcing ribs in a star structure are welded inside the frame, supporting plates are arranged at positions, located at the front end and the rear end, of the inner sides of the reinforcing ribs, a positioning block is connected between the front end supporting plate and the frame, pin holes identical to the positioning hole in diameter are formed in the upper surface of the positioning block, and positioning pins penetrate through the pin holes.

As a still further scheme of the invention: the pin hole and the positioning hole are positioned on the same vertical horizontal line, the diameter of the positioning pin is matched with the inner diameter of the pin hole, and the length of the positioning pin is twice of the distance between the pin hole and the positioning hole.

As a still further scheme of the invention: the upper surface of the frame is provided with four lifting rings, the four lifting rings are screwed and fixed with the frame through bolts, and the four lifting rings are distributed in a rectangular shape.

As a still further scheme of the invention: the front straightening device comprises two straightening device outer frames which are distributed in a straight line shape, and a plurality of rollers are rotatably connected to the inner sides of the two straightening device outer frames at equal intervals.

As a still further scheme of the invention: the cylinder includes the pivot, the both ends of pivot are all rotated in the inboard of centering ware frame through the bearing and are connected, and the both ends of pivot have all cup jointed spacing dish, the outside of spacing dish all is fixed with fixed cover, it is fixed mutually through fastening bolt between fixed cover and the pivot.

As a still further scheme of the invention: the surface of the fixed sleeve is provided with a threaded hole at a position corresponding to the fastening bolt, and the internal thread in the threaded hole is matched with the thread teeth on the surface of the fixed sleeve.

Compared with the prior art, the invention has the beneficial effects that: the invention has novel design and simple principle, the supporting legs of the calibration frame are randomly placed on the roller of the centering device, the positioning pins are inserted into the positioning holes and the pin holes, the calibration program is started, the hydraulic cylinder pushes the push rod to center the calibration frame, the distance measuring sensors fixed under the shields of the front and rear centering devices are electrified to measure the distance between the sensors and the inner sides of the supporting legs, the centering state of the centering device can be conveniently, quickly and accurately judged, and the data of whether the centering device is centered or not and if the centering device is not centered, which has larger error is obtained from the result, the error caused by manual measurement is avoided, the adjustment direction and size can be given to guide maintenance personnel to quickly repair the centering device, the limiting disc on the roller can be adjusted according to the size of the wheels, and the stability is increased.

Drawings

FIG. 1 is a schematic structural diagram of a self-calibration apparatus of an automobile plummer in ADAS calibration;

FIG. 2 is a schematic structural diagram of a calibration frame in a self-calibration device of an automobile plummer in ADAS calibration;

FIG. 3 is a schematic structural diagram of a front centering device in a self-calibration apparatus of an automobile centering device in ADAS calibration;

FIG. 4 is a schematic diagram of a roller of the self-calibration apparatus of the auto-aligner in ADAS calibration;

FIG. 5 is an enlarged schematic view of a portion A of FIG. 2 of a self-calibration apparatus of an auto-aligner in ADAS calibration;

FIG. 6 is a front elevational view of a self-calibration apparatus for an auto-centering device in ADAS calibration.

In the figure: 1. a rear straightening device; 2. a front pendulum; 21. a corrector outer frame; 22. a drum; 221. a rotating shaft; 222. a limiting disc; 223. fixing a sleeve; 224. fastening a bolt; 3. a calibration frame; 31. a frame; 32. a front leg; 33. positioning blocks; 34. a hoisting ring; 35. positioning pins; 36. a support plate; 37. reinforcing ribs; 38. a pin hole; 39. a rear leg; 4. a corrector guard; 5. a push rod; 6. a connecting rod; 7. a ranging sensor; 8. a bump; 9. positioning holes; 10. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, a self-calibration apparatus for an ADAS-calibrated automobile centering device includes a calibration frame 3, a rear centering device 1 is disposed below the calibration frame 3 at a rear position, a front centering device 2 is disposed below the calibration frame 3 at a front position, centering device shields 4 are fixed at middle positions above the front centering device 2 and the rear centering device 1, push rods 5 are disposed inside the centering device shields 4 at two sides, two hydraulic cylinders 10 are fixed at bottom ends inside the centering device shields 4, a distance measuring sensor 7 electrically connected to an external control interface is fixed at a center line position at top ends inside the centering device shields 4, a connecting rod 6 connected to the push rods 5 is fixed at a telescopic end of the hydraulic cylinders 10, a bump 8 is fixed at a middle position at a rear end of the centering device shields 4, the upper surface of the bump 8 is provided with a positioning hole 9, the calibration frame 3 comprises a frame 31, two front support legs 32 are fixed at positions corresponding to the front centering device 2 below the front end of the frame 31, two rear support legs 39 are fixed at positions corresponding to the rear centering device 1 below the rear end of the frame 31, a reinforcing rib 37 in a "" structure is welded inside the frame 31, support plates 36 are respectively arranged at the front end and the rear end of the inner side of the reinforcing rib 37, the front end support plate 36 is connected with the frame 31 through a positioning block 33, the upper surface of the positioning block 33 is provided with a pin hole 38 with the same aperture as that of the positioning hole 9, a positioning pin 35 penetrates through the pin hole 38, the pin hole 38 and the positioning hole 9 are in the same vertical horizontal line, the diameter of the positioning pin 35 is matched with the inner diameter of the pin hole 38, the length of the positioning pin 35 is twice of the distance between the pin hole 38 and the positioning hole 9, when in use, meanwhile, the positioning pin 35 is inserted into the positioning hole 9 and the pin hole 38, a calibration program is started, the hydraulic cylinder 10 pushes the push rod 5 to align the calibration frame 3, the distance measuring sensors 7 fixed under the shields of the front and rear aligners are electrified, the distance between the sensors and the inner sides of the supporting legs is measured, the aligning state of the aligners can be conveniently, quickly and accurately judged, and whether the aligners are aligned or not and which error is larger if the aligners are not aligned are obtained from the result, so that the error caused by manual measurement is avoided, the adjustment direction and the size can be given, and a maintenance worker can be guided to quickly repair the aligners.

The upper surface of frame 31 is provided with four rings 34, closes fixedly through the bolt is twisted between four rings 34 and the frame 31, and four rings 34 are the rectangle and distribute, can play the effect of convenient handling, have reduced the use degree of difficulty, have practiced thrift the time.

The front straightening device 2 comprises two straightening device outer frames 21 distributed in a shape like a Chinese character 'yi', the inner sides of the two straightening device outer frames 21 are connected with a plurality of rollers 22 in a rotating mode at equal intervals, each roller 22 comprises a rotating shaft 221, two ends of each rotating shaft 221 are connected with the inner sides of the straightening device outer frames 21 in a rotating mode through bearings, limiting discs 222 are sleeved at two ends of each rotating shaft 221, fixing sleeves 223 are fixed on the outer sides of the limiting discs 222, threaded holes are formed in the positions, corresponding to the fastening bolts 224, of the surfaces, where the fixing sleeves 223 are fixed through the fastening bolts 224, between the fixing sleeves 223 and the rotating shafts 221, internal threads in the threaded holes are matched with threads on the surfaces of the fixing sleeves 223, during adjustment, the fastening bolts 224 are loosened, the limiting discs 222 are adjusted according to the thickness of wheels, the limiting discs are fixed through the fastening bolts 224 after adjustment is finished, wheels with different thicknesses.

The working principle of the invention is as follows: when the device is used, the supporting legs of the calibration frame 3 are randomly placed on the roller 22 of the centering device, meanwhile, the positioning pins 35 are inserted into the positioning holes 9 and the pin holes 38, a calibration program is started, the hydraulic cylinder 10 pushes the push rod 5 to center the calibration frame 3, the distance measuring sensors 7 fixed under the shields of the front and rear centering devices are electrified, the distance between the sensors and the inner sides of the supporting legs is measured, the centering state of the centering device can be conveniently, quickly and accurately judged, and the result shows that whether the centering device is centered or not, if the centering device is not centered, the data with larger error is obtained, the error caused by manual measurement is avoided, the adjustment direction and the size can be given, and a maintenance worker can be guided to quickly repair the centering device;

the determination principle is as follows: two legs are respectively arranged at the front end and the rear end of the calibration frame 3, the distances L1 (front) and L2 (rear) at the inner sides of the legs are constant values, and L1= L2, the inner planes of the four legs are symmetrical with respect to the center line of the calibration frame 3, the distance measuring sensor 7 is mounted on the front and rear aligners, the distance between the distance measuring sensor 7 and the center of the front and rear aligners is also a constant value, and is set as L3 (front) and L4 (rear), the distance from the leg is detected by the distance measuring sensor 7 as L5 (front) and L6 (rear), it can be found that the distance of the right leg from the centre line is L3+ L5 (front) and L4+ L6 (rear), if L3+ L5= L1/2, L4+ L6= L2/2, and L3+ L5= L4+ L6, or L3+ L5-L1/2< the specified error, and L4+ L6-L2/2< the specified error, the pendulum corrector is qualified, otherwise, the pendulum corrector needs to be adjusted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A self-calibration device of an automobile centering device in ADAS calibration comprises a calibration frame (3) and is characterized in that a rear centering device (1) is arranged at the position of the lower part of the calibration frame (3) located at the rear end, a front centering device (2) is arranged at the position of the lower part of the calibration frame (3) located at the front end, centering device shields (4) are fixed at the middle sections of the upper positions of the front centering device (2) and the rear centering device (1), push rods (5) are arranged at the positions of the two sides of the inner part of the centering device shield (4), two hydraulic cylinders (10) which are arranged oppositely are fixedly arranged at the inner bottom end of the centering device shield (4), a distance measuring sensor (7) which is electrically connected with an external control interface is fixedly arranged at the position of the central line of the inner top end of the centering device shield (4), and connecting rods (6) which are connected with the push rods (5) are fixed at the telescopic ends of the hydraulic cylinders (10), the rear end of the centering device shield (4) is fixed with a bump (8) at the middle position, and the upper surface of the bump (8) is provided with a positioning hole (9).

2. An ADAS calibration device for calibrating a vehicle's pendulum corrector according to claim 1, it is characterized in that the calibration frame (3) comprises a frame (31), two front support legs (32) are fixed at the positions corresponding to the front centering device (2) below the front end of the frame (31), two rear supporting legs (39) are fixed at the positions corresponding to the rear centering device (1) below the rear end of the frame (31), reinforcing ribs (37) in a star structure are welded inside the frame (31), the inner sides of the reinforcing ribs (37) are provided with supporting plates (36) at the front end and the rear end, wherein the front end supporting plate (36) is connected with the frame (31) through a positioning block (33), the upper surface of the positioning block (33) is provided with a pin hole (38) with the same aperture as that of the positioning hole (9), and a positioning pin (35) penetrates through the pin hole (38).

3. An apparatus for calibrating an ADAS centering auto-centering device according to claim 2, wherein said pin hole (38) and said positioning hole (9) are on the same vertical level, the diameter of said positioning pin (35) is adapted to the inner diameter of said pin hole (38), and the length of said positioning pin (35) is twice the distance between said pin hole (38) and said positioning hole (9).

4. The device for calibrating the automobile centering device in ADAS calibration as claimed in claim 2, wherein the upper surface of the frame (31) is provided with four hanging rings (34), the four hanging rings (34) are screwed and fixed with the frame (31) through bolts, and the four hanging rings (34) are distributed in a rectangular shape.

5. The device for calibrating the auto-centering in ADAS calibration as claimed in claim 1, wherein said front centering device (2) comprises two centering device frames (21) distributed in a line shape, and a plurality of rollers (22) are rotatably connected to the inner sides of said centering device frames (21) at equal intervals.

6. The device for calibrating the automobile centering device during ADAS calibration of claim 5, wherein the roller (22) comprises a rotating shaft (221), both ends of the rotating shaft (221) are rotatably connected to the inner side of the centering device outer frame (21) through bearings, both ends of the rotating shaft (221) are sleeved with a limiting disc (222), the outer side of the limiting disc (222) is fixed with a fixing sleeve (223), and the fixing sleeve (223) is fixed with the rotating shaft (221) through a fastening bolt (224).

7. The device for calibrating the self-calibration of the automobile centering device in ADAS calibration as claimed in claim 6, wherein the surface of said fixing sleeve (223) is provided with a threaded hole at the position corresponding to the fastening bolt (224), and the internal thread of the threaded hole is matched with the thread on the surface of the fixing sleeve (223).