CN114111529B - Method and device for measuring caster angle and caster angle of vehicle kingpin - Google Patents
Method and device for measuring caster angle and caster angle of vehicle kingpin Download PDFInfo
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- CN114111529B CN114111529B CN202111325880.6A CN202111325880A CN114111529B CN 114111529 B CN114111529 B CN 114111529B CN 202111325880 A CN202111325880 A CN 202111325880A CN 114111529 B CN114111529 B CN 114111529B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
Abstract
The invention discloses a device for measuring the caster angle and the internal caster angle of a kingpin of a vehicle, which comprises a fixing part, an adjusting part and a measuring part; the fixing part is used for clamping the tire; the adjusting part is arranged on the fixing part and is used for adjusting the angles of the measuring part on the X-Z surface and the Y-Z surface so as to keep the measuring part horizontal; the measuring part is arranged on the adjusting part and is used for measuring the caster angle and the caster angle of the kingpin of the vehicle. The invention also discloses a method for measuring the caster angle and the caster angle of the kingpin of the vehicle. The invention can rapidly and conveniently measure the caster angle and the caster angle of the kingpin of the vehicle, and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of automobile detection, in particular to a method and a device for measuring a caster angle and an internal caster angle of a kingpin of a vehicle.
Background
The main pin of the automobile is a rotation center when the steering wheel of the traditional automobile turns, and the false main pin is a straight line from the center position of the fixed shock absorber on the automobile body to the center of the ball pin at the lower end of the steering knuckle. The positioning parameters of the kingpin comprise kingpin caster and kingpin caster, and the kingpin caster is used for automatically correcting the front wheel when the vehicle runs, keeping straight running and avoiding the defects of straight line deviation, front wheel shimmy, unstable steering wheel swaying and the like of the vehicle.
At present, a four-wheel aligner is mainly used for measuring the caster angle and the internal caster angle of a kingpin of a vehicle, and the method has the advantages of large investment and long measurement period and can not be used for measuring at any time. Therefore, there is a great need for a new device and method for measuring caster and caster in a vehicle.
Disclosure of Invention
The invention aims to provide a method and a device for measuring the caster angle and the caster angle of a vehicle kingpin, which can be used for quickly and conveniently measuring the caster angle and the caster angle of the kingpin of the vehicle and improving the working efficiency.
The technical scheme adopted by the invention is as follows:
a vehicle caster angle and caster angle measuring apparatus includes a fixing portion, a caster angle adjusting portion, and a measuring portion;
the fixing part is used for clamping the tire;
when the caster angle of the kingpin is installed, the caster angle adjusting part of the kingpin is installed on the fixing part and is used for adjusting the angles of the measuring part on the X-Z surface and the Y-Z surface so as to keep the measuring part horizontal;
when the main pin inner dip angle is arranged, the main pin inner dip angle adjusting part is arranged on the fixing part and is used for adjusting the angle of the measuring part on the X-Z surface so as to keep the measuring part at a proper angle;
the measuring part is arranged on the caster angle adjusting part and is used for measuring the caster angle of the kingpin of the vehicle;
the measuring part is arranged on the main pin inner dip angle adjusting part and is used for measuring the main pin inner dip angle of the vehicle.
According to the scheme, the fixing part comprises a fixing part body, a clamping adjusting knob and 2 clamping arms; the clamping adjusting knob penetrates through the fixing part body and then is connected with an adjusting rack, and the adjusting rack is meshed with adjusting teeth of the 2 clamping arms; the clamping adjusting knob is rotated, and the 2 clamping arms are opened or closed, so that the clamping and the loosening of the tire are realized.
According to the scheme, the caster angle adjusting part comprises an X-Z surface rough adjusting mechanism, a Y-Z surface adjusting mechanism and an X-Z surface fine adjusting mechanism; the X-Z surface coarse adjustment mechanism is connected with the fixing part body of the fixing part and is used for adjusting the angle of the measuring part on the X-Z surface and carrying out coarse adjustment on the horizontal position of the measuring part; the Y-Z surface adjusting mechanism is arranged on the X-Z surface rough adjusting mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface; the X-Z plane fine adjustment mechanism is arranged on the Y-Z plane adjustment mechanism and is used for adjusting the angle of the measuring part on the X-Z plane and finely adjusting the horizontal position of the measuring part;
the main pin internal inclination angle adjusting part comprises an X-Z plane rough adjustment adjusting mechanism, an X-Z plane adjusting mechanism and a Y-Z plane fine adjustment adjusting mechanism; the X-Z surface coarse adjustment mechanism is connected with the fixing part body of the fixing part and is used for adjusting the angle of the measuring part on the X-Z surface and carrying out coarse adjustment on the horizontal position of the measuring part; the X-Z surface adjusting mechanism is arranged on the X-Z surface rough adjusting mechanism and is used for adjusting the angle of the measuring part on the X-Z surface; the Y-Z surface fine adjustment mechanism is arranged on the X-Z surface adjustment mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface and finely adjusting the horizontal position of the measuring part;
when the back tilt angle and the kingpin inner tilt angle are measured, the X-Z surface rough adjustment mechanism and the X-Z surface fine adjustment mechanism are shared.
According to the scheme, the X-Z surface coarse adjustment mechanism comprises an adjustment part body and an X-Z surface coarse adjustment knob, wherein an arc-shaped adjustment groove is formed in the adjustment part body; the X-Z surface coarse adjustment adjusting knob passes through the arc-shaped adjusting groove on the adjusting part body and then passes through the vertical groove on the fixing part body; the X-Z surface coarse adjustment adjusting knob can be unscrewed or screwed, the adjusting part body can be moved up and down along the vertical groove on the fixing part body after unscrewing, the Z position of the measuring part is proper, meanwhile, the adjusting part body can be adjusted in an angle along the X-Z surface along the arc-shaped adjusting groove on the adjusting part body, and the horizontal position of the measuring part is coarse adjusted.
According to the scheme, the Y-Z surface adjusting mechanism comprises a linear supporting piece, a measuring surface adjusting block and a horizontal adjusting block; the linear supporting piece is connected with the adjusting part body of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block is connected with the linear supporting piece through a shaft, and can rotate along the shaft; the horizontal adjusting block is connected with the measuring surface adjusting block;
the X-Z surface adjusting mechanism comprises an L-shaped supporting piece, a measuring surface adjusting block and a horizontal adjusting block; the L-shaped supporting piece is connected with an adjusting part body of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block is connected with one end of the L-shaped supporting piece through a shaft, and can rotate along the shaft; the horizontal adjusting block is connected with the measuring surface adjusting block;
the measuring surface adjusting block and the horizontal adjusting block are shared when the back tilt angle and the kingpin inner tilt angle are measured.
According to the scheme, the X-Z surface fine adjustment mechanism and the Y-Z surface fine adjustment mechanism comprise fine adjustment knobs, the ends of the fine adjustment knobs are provided with gears, the gears are meshed with adjustment racks on arc grooves on horizontal adjustment blocks of the Y-Z surface adjustment mechanism (X-Z surface adjustment mechanism), the fine adjustment of the horizontal position of the measuring part is realized by rotating the fine adjustment knobs to adjust angles of the horizontal adjustment blocks on the X-Z surface (Y-Z surface) along the arc grooves on the horizontal adjustment blocks.
According to the scheme, the measuring part comprises a sliding rail with a bubble type level, a digital display angle ruler and 2 infrared linear lasers; the sliding rail is fixed on the horizontal adjusting block; the digital display angle ruler can slide on the slide rail; the 2 infrared linear lasers are respectively arranged at the upper end and the lower end of the measuring arm of the digital display angle ruler, and the infrared linear lasers emit light on the Y-Z surface to form a linear.
According to the scheme, the measuring arm is of an arc-shaped structure, so that an infrared linear laser can be conveniently arranged.
The invention also provides a method for measuring the caster angle and the caster angle of the kingpin of the vehicle.
According to the scheme, the method comprises the following steps:
when the caster angle of the kingpin is measured, the tire is clamped through the fixing part, and the caster angle of the kingpin and the caster angle measuring device of the kingpin of the vehicle are fixed on the tire; the measuring part is kept at a proper height and a proper measuring surface through the adjustment of the caster angle adjusting part of the kingpin, and the sliding rail of the measuring part is adjusted to be horizontal; opening a measuring arm of the digital display angle ruler, so that the digital display angle ruler moves along the sliding rail, and the infrared word line which is shot by the infrared word line laser irradiates the central position of the shock absorber at the fixed end of the vehicle body and the central position of the lower end of the steering knuckle respectively; at this time, the measured angle of the angle gauge is subtracted by 90 degrees to obtain the measured value of the caster angle of the kingpin.
When the caster angle is measured, the linear support piece of the Y-Z surface adjusting mechanism is replaced by the L-shaped support piece of the X-Z surface adjusting mechanism, and the rest is unchanged; the measuring part is kept at a proper height and a proper measuring surface through the adjustment of the main pin inner dip angle adjusting part, and the sliding rail of the measuring part is adjusted to be vertical; opening a measuring arm of the digital display angle ruler, so that the digital display angle ruler slides on the sliding rail along the Y-direction horizontal direction, and an infrared word line which is shot by an infrared word line laser irradiates the central position of the shock absorber at the fixed end of the vehicle body and the central position of the lower end of the steering knuckle respectively; at this time, the measured angle of the angle ruler is subtracted by 90 degrees to obtain the measured value of the caster angle.
The invention has the beneficial effects that:
the angle of the measuring part on the X-Z surface and the Y-Z surface is adjusted by arranging the fixing part, the caster angle adjusting part of the kingpin and the measuring part, so that the measuring part is ensured to be on a proper measuring surface, and the caster angle of the kingpin of the vehicle are measured, and the test is simple, convenient and quick;
the accuracy of the measurement result is ensured by arranging an X-Z surface rough adjustment mechanism, a Y-Z surface adjustment mechanism, an X-Z surface adjustment mechanism and an X-Z surface fine adjustment mechanism;
the device has the advantages of simple structure and convenient operation, and can rapidly and conveniently measure the caster angle and the internal caster angle of the kingpin of the vehicle, thereby improving the working efficiency;
the precision is reliable, and the problems of difficult measurement operation, waste of working hours and the like at present can be solved;
the device can be used for adjusting the size and meeting the measurement requirements of the caster angle and the caster angle of the kingpin of multiple vehicle types.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a vehicle caster and caster measuring apparatus;
FIG. 2 is a schematic view of the structure of the caster and caster measuring apparatus (except for the clamp arm) of the vehicle;
FIG. 3 is a schematic structural view of a fixing portion;
FIG. 4 is a schematic view of the connection structure of the clamp adjustment knob and 2 clamp arms;
FIG. 5 is a schematic structural view of a caster adjuster;
FIG. 6 is a schematic structural view of the caster adjuster;
FIG. 7 is a schematic diagram of the connection structure of the Y-Z surface adjustment mechanism and the X-Z surface fine adjustment mechanism;
FIG. 8 is a schematic diagram of the connection structure of the measuring section and the leveling block;
FIG. 9 is a schematic diagram of the operation of 2 IR inline lasers;
FIG. 10 is a schematic illustration of a test of caster of a vehicle;
FIG. 11 is a schematic view of view A of FIG. 10;
FIG. 12 is a schematic illustration of a test of caster angle of a vehicle kingpin;
FIG. 13 is a schematic view of view A of FIG. 12;
in the figure: A. the device comprises a fixing part, a B, an adjusting part, a C, a measuring part, a clamping arm, a 2, a fixing part body, a 3, a clamping adjusting knob, a 4, an adjusting part body, a 5, an X-Z surface coarse adjusting knob, an a, a vertical groove, a B, an arc-shaped adjusting groove, a 6, a measuring surface adjusting block, a 7, a horizontal adjusting block, an 8, a fine adjusting knob, a C, an arc-shaped groove, a 9, a sliding rail, a 10, a digital display angle ruler, a 11, an infrared linear laser, a 12, a transmission shaft, a 13, a stabilizer bar, a 14, a steering gear, a 15, a vehicle body fixed end of a shock absorber, a 16, a steering knuckle lower end, a 17, a linear supporting piece, a 17-1 and an L-shaped supporting piece.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 13, a vehicle caster and caster measuring apparatus includes a caster measuring apparatus and a caster measuring apparatus including a fixing portion a for clamping a tire, an adjusting portion B (caster adjusting portion ) and a measuring portion C; the adjusting part B is arranged on the fixing part A and is used for adjusting the direction and the angle of the measuring part C and adjusting the angles of the measuring part C on the X-Z surface and the Y-Z surface so as to ensure that the measuring part C is on a proper measuring surface; the measuring part C is arranged on the adjusting part B and is used for measuring the caster angle and the caster angle of the kingpin of the vehicle.
Because the supporting pieces of the main pin caster angle measuring device and the main pin inner inclination angle measuring device are different (the supporting board of the main pin caster angle measuring device is a straight supporting piece 17, the supporting piece of the main pin inner inclination angle measuring device is an L-shaped supporting piece 17-1), other parts can be shared. The structure of the caster measuring apparatus is described in detail below.
The fixing part A comprises a fixing part body 2, a clamping adjusting knob 3 and 2 clamping arms 1; the clamping adjusting knob 3 passes through the fixed part body 2 and then is connected with an adjusting rack, and the adjusting rack is meshed with adjusting teeth of the 2 clamping arms 1; the clamping adjustment knob 3 is rotated to open or close the 2 clamping arms 1, thereby realizing clamping and loosening of the tire.
The adjusting part B comprises an X-Z surface rough adjusting mechanism, a Y-Z surface adjusting mechanism and an X-Z surface fine adjusting mechanism. The X-Z surface coarse adjustment mechanism is connected with the fixing part body 2 of the fixing part A and is used for adjusting the angle of the measuring part C on the X-Z surface and carrying out coarse adjustment on the horizontal position of the measuring part C. The Y-Z surface adjusting mechanism is arranged on the X-Z surface rough adjusting mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface. The X-Z plane fine adjustment mechanism is arranged on the Y-Z plane adjustment mechanism and is used for adjusting the angle of the measuring part C on the X-Z plane and finely adjusting the horizontal position of the measuring part C.
The structure of the adjusting part B is as follows: the X-Z surface coarse adjustment mechanism comprises an adjustment part body 4 and an X-Z surface coarse adjustment knob 5, wherein an arc-shaped adjustment groove b is formed in the adjustment part body 4; the X-Z surface coarse adjustment knob 5 passes through the arc-shaped adjustment groove b on the adjustment part body 4 and then passes through the vertical groove a on the fixed part body 2; the X-Z surface coarse adjustment adjusting knob 5 can be unscrewed or screwed, the adjusting part body 4 can be moved up and down along the vertical groove a on the fixing part body 2 after unscrewing, the Z position of the measuring part C is ensured to be proper, and meanwhile, the angle of the adjusting part body 4 can be adjusted along the arc-shaped adjusting groove b on the adjusting part body on the X-Z surface, so that the horizontal position of the measuring part C is coarse adjusted. The Y-Z surface adjusting mechanism comprises a straight supporting piece 17, a measuring surface adjusting block 6 and a horizontal adjusting block 7; the in-line support piece 17 is connected with the adjusting part body 4 of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block 6 is connected with the linear supporting piece 17 through a shaft, and the measuring surface adjusting block 6 can rotate along the shaft (the measuring surface adjusting block 6 and the linear supporting piece 17 can be also connected through bolts and nuts in a fastening way); the horizontal adjusting block 7 is connected with the measuring surface adjusting block 6; the structure can adjust the angle of the measuring surface adjusting block on the Y-Z surface, and ensures that the angle of the measuring surface of the measuring part is proper. The X-Z surface fine adjustment mechanism comprises a fine adjustment knob 8 with a gear at the end, the gear of the fine adjustment knob 8 is meshed with an adjustment rack on an arc-shaped groove C on the horizontal adjustment block 7, and the horizontal adjustment of the horizontal position of the measuring part C is carried out by rotating the fine adjustment knob 8 to realize the adjustment of the angle of the horizontal adjustment block 7 along the arc-shaped groove C on the X-Z surface.
The measuring part C comprises a sliding rail 9 with a bubble type level, a digital display angle ruler 10 and 2 infrared linear lasers 11; the slide rail 9 is fixed on a horizontal adjusting block 7 of the Y-Z surface adjusting mechanism; the digital display angle ruler 10 can slide in the horizontal direction of the 9 on the slide rail; the 2 infrared linear lasers 11 are respectively arranged at the upper end and the lower end of the measuring arm of the digital display angle ruler 10 in an arc-shaped structure, and the infrared linear lasers 11 emit light on the Y-Z plane to form a linear.
Example 2
The method adopts the device for measuring the caster angle and the caster angle of the kingpin of the vehicle to measure the caster angle and the caster angle of the kingpin of the vehicle; the method comprises the following steps:
when the caster angle of the kingpin is measured, the tire is clamped through the fixing part, and the caster angle of the kingpin and the caster angle measuring device of the kingpin of the vehicle are fixed on the tire; the measuring part is kept at a proper height and a proper measuring surface through the adjustment of the adjusting part, and the sliding rail of the measuring part is adjusted to be horizontal; opening a measuring arm of the digital display angle ruler, so that the digital display angle ruler moves along the sliding rail, and the infrared word line which is shot by the infrared word line laser irradiates the central position of the shock absorber at the fixed end of the vehicle body and the central position of the lower end of the steering knuckle respectively; at this time, the measured angle of the angle gauge is subtracted by 90 degrees to obtain the measured value of the caster angle of the kingpin.
When the caster angle of the kingpin is measured, the linear supporting piece 17 of the Y-Z surface adjusting mechanism is replaced by the L-shaped supporting piece 17-1 to form an X-Z surface adjusting mechanism, and the rest is unchanged; the measuring part is kept at a proper height and a proper measuring surface through the adjustment of the main pin inner dip angle adjusting part, and the sliding rail of the measuring part is adjusted to be vertical; opening a measuring arm of the digital display angle ruler, so that the digital display angle ruler slides on the sliding rail along the Y-direction horizontal direction, and an infrared word line which is shot by an infrared word line laser irradiates the central position of the shock absorber at the fixed end of the vehicle body and the central position of the lower end of the steering knuckle respectively; at this time, the measured angle of the angle ruler is subtracted by 90 degrees to obtain the measured value of the caster angle.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (9)
1. The utility model provides a vehicle caster angle and caster angle measuring device, its characterized in that: the device comprises a fixing part, a main pin caster angle adjusting part, a main pin internal caster angle adjusting part and a measuring part;
the fixing part is used for clamping the tire;
the caster angle adjusting part comprises an X-Z surface rough adjusting mechanism, a Y-Z surface adjusting mechanism and an X-Z surface fine adjusting mechanism; the X-Z surface coarse adjustment mechanism is connected with the fixing part body of the fixing part and is used for adjusting the angle of the measuring part on the X-Z surface and carrying out coarse adjustment on the horizontal position of the measuring part; the Y-Z surface adjusting mechanism is arranged on the X-Z surface rough adjusting mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface; the X-Z plane fine adjustment mechanism is arranged on the Y-Z plane adjustment mechanism and is used for adjusting the angle of the measuring part on the X-Z plane and finely adjusting the horizontal position of the measuring part;
the main pin internal inclination angle adjusting part comprises an X-Z plane rough adjustment adjusting mechanism, an X-Z plane adjusting mechanism and a Y-Z plane fine adjustment adjusting mechanism; the X-Z surface coarse adjustment mechanism is connected with the fixing part body of the fixing part and is used for adjusting the angle of the measuring part on the X-Z surface and carrying out coarse adjustment on the horizontal position of the measuring part; the X-Z surface adjusting mechanism is arranged on the X-Z surface rough adjusting mechanism and is used for adjusting the angle of the measuring part on the X-Z surface; the Y-Z surface fine adjustment mechanism is arranged on the X-Z surface adjustment mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface and finely adjusting the horizontal position of the measuring part;
when the back inclination angle and the kingpin inclination angle are measured, the X-Z surface rough adjustment mechanism is shared; the X-Z surface fine adjustment mechanism and the Y-Z surface fine adjustment mechanism are shared;
when the caster angle of the kingpin is measured, the caster angle adjusting part is arranged on the fixing part and is used for adjusting the angles of the measuring part on the X-Z surface and the Y-Z surface so as to keep the measuring part horizontal;
when the main pin internal inclination angle is measured, the main pin internal inclination angle adjusting part is arranged on the fixing part and is used for adjusting the angle of the measuring part on the X-Z surface so as to keep the measuring part at a proper angle;
the measuring part is arranged on the caster angle adjusting part and is used for measuring the caster angle of the kingpin of the vehicle;
the measuring part is arranged on the main pin inner dip angle adjusting part and is used for measuring the main pin inner dip angle of the vehicle.
2. The vehicle caster and caster measurement apparatus of claim 1, wherein: the fixing part comprises a fixing part body, a clamping adjusting knob and 2 clamping arms; the clamping adjusting knob penetrates through the fixing part body and then is connected with an adjusting rack, and the adjusting rack is meshed with adjusting teeth of the 2 clamping arms; the clamping adjusting knob is rotated, and the 2 clamping arms are opened or closed, so that the clamping and the loosening of the tire are realized.
3. The vehicle caster and caster measurement apparatus of claim 1, wherein: the X-Z surface coarse adjustment mechanism comprises an adjustment part body and an X-Z surface coarse adjustment knob, and an arc-shaped adjustment groove is formed in the adjustment part body; the X-Z surface coarse adjustment adjusting knob passes through the arc-shaped adjusting groove on the adjusting part body and then passes through the vertical groove on the fixing part body; the measurement unit is moved on the X-Z plane by moving the X-Z plane rough adjustment knob.
4. A vehicle caster and caster measuring apparatus as defined in claim 1 or 3, wherein: the Y-Z surface adjusting mechanism comprises a linear supporting piece, a measuring surface adjusting block and a horizontal adjusting block; the linear supporting piece is connected with the adjusting part body of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block is connected with the linear supporting piece through a shaft, and can rotate along the shaft; the horizontal adjusting block is connected with the measuring surface adjusting block;
the X-Z surface adjusting mechanism comprises an L-shaped supporting piece, a measuring surface adjusting block and a horizontal adjusting block; the L-shaped supporting piece is connected with an adjusting part body of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block is connected with one end of the L-shaped supporting piece through a shaft, and can rotate along the shaft; the horizontal adjusting block is connected with the measuring surface adjusting block;
the measuring surface adjusting block and the horizontal adjusting block are shared when the back tilt angle and the kingpin inner tilt angle are measured.
5. The vehicle caster and caster measuring apparatus of claim 4, wherein: the X-Z surface fine adjustment mechanism and the Y-Z surface fine adjustment mechanism comprise fine adjustment knobs, the ends of the fine adjustment knobs are provided with gears, the gears are meshed with adjustment racks on arc-shaped adjustment grooves on the horizontal adjustment blocks, the horizontal adjustment knobs are rotated to realize the adjustment angles of the horizontal adjustment blocks along the arc-shaped adjustment grooves on the horizontal adjustment blocks on the X-Z surface and the Y-Z surface, and the horizontal positions of the measuring parts are finely adjusted.
6. The vehicle caster and caster measuring apparatus of claim 4, wherein: the measuring part comprises a sliding rail with a bubble type level, a digital display angle ruler and 2 infrared one-word line lasers; the sliding rail is fixed on the horizontal adjusting block; the digital display angle ruler can slide on the slide rail; the 2 infrared word line lasers are respectively arranged at the upper end and the lower end of the measuring arm of the digital display angle ruler, and the infrared word line lasers emit light on the Y-Z surface to form a word line.
7. The vehicle caster and caster measurement apparatus of claim 6, wherein: the measuring arm is of an arc-shaped structure.
8. A method for measuring the caster angle and the internal caster angle of a vehicle is characterized by comprising the following steps: the method employs the vehicle caster and caster measuring apparatus of claim 6 or 7.
9. The method for measuring the caster and caster of a vehicle according to claim 8, wherein: the method comprises the following steps:
when the caster angle of the kingpin is measured, the tire is clamped through the fixing part, and the caster angle of the kingpin and the caster angle measuring device of the kingpin of the vehicle are fixed on the tire; the measuring part is kept at a proper height and a proper measuring surface through the adjustment of the caster angle adjusting part of the kingpin, and the sliding rail of the measuring part is adjusted to be horizontal; opening a measuring arm of the digital display angle ruler, so that the digital display angle ruler moves along the sliding rail, and the infrared word line which is shot by the infrared word line laser irradiates the central position of the shock absorber at the fixed end of the vehicle body and the central position of the lower end of the steering knuckle respectively; at this time, the measured angle of the angle ruler is subtracted by 90 degrees to obtain a measured value of the caster angle of the kingpin;
when the caster angle is measured, the linear support piece of the Y-Z surface adjusting mechanism is replaced by the L-shaped support piece of the X-Z surface adjusting mechanism, and the rest is unchanged; the measuring part is kept at a proper height and a proper measuring surface through the adjustment of the main pin inner dip angle adjusting part, and the sliding rail of the measuring part is adjusted to be vertical; opening a measuring arm of the digital display angle ruler, so that the digital display angle ruler slides on the sliding rail along the Y direction, and an infrared word line which is shot by an infrared word line laser irradiates the central position of the shock absorber at the fixed end of the vehicle body and the central position of the lower end of the steering knuckle respectively; at this time, the measured angle of the angle ruler is subtracted by 90 degrees to obtain the measured value of the caster angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325880.6A CN114111529B (en) | 2021-11-10 | 2021-11-10 | Method and device for measuring caster angle and caster angle of vehicle kingpin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325880.6A CN114111529B (en) | 2021-11-10 | 2021-11-10 | Method and device for measuring caster angle and caster angle of vehicle kingpin |
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| CN114111529A CN114111529A (en) | 2022-03-01 |
| CN114111529B true CN114111529B (en) | 2023-10-20 |
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