CN114111529A - Method and device for measuring caster angle and inner tilt angle of vehicle kingpin - Google Patents
Method and device for measuring caster angle and inner tilt angle of vehicle kingpin Download PDFInfo
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- CN114111529A CN114111529A CN202111325880.6A CN202111325880A CN114111529A CN 114111529 A CN114111529 A CN 114111529A CN 202111325880 A CN202111325880 A CN 202111325880A CN 114111529 A CN114111529 A CN 114111529A
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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 a caster angle and a caster angle of a kingpin of a vehicle, which comprises a fixing part, an adjusting part and a measuring part, wherein the fixing part is arranged on the fixing part; the fixing part is used for clamping a tire; the adjusting part is arranged on the fixing part and used for adjusting the angles of the measuring part on an X-Z surface and a 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 main pin of the vehicle. The invention also discloses a method for measuring the caster angle and the inner tilt angle of the kingpin of the vehicle. The invention can quickly and conveniently measure the caster angle and the caster angle of the kingpin of the vehicle, and improve the operation 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 inner tilt angle of a vehicle kingpin.
Background
The main pin of the automobile is a turning center when a steering wheel on the traditional automobile turns, and the false main pin is a straight line from the center position of a fixed shock absorber on an automobile body to the center of a ball pin at the lower end of a steering knuckle. The positioning parameters of the kingpin comprise a kingpin caster angle and a kingpin inclination angle, and the kingpin has the functions of automatically aligning the front wheel when the vehicle runs, keeping the vehicle running in a straight line and avoiding the occurrence of poor conditions such as straight deviation of the vehicle, shimmy of the front wheel, unstable swinging of a steering wheel and the like.
At present, the four-wheel aligner is mainly used for measuring the caster angle and the caster angle of a main pin of a vehicle, the mode has large investment and long measuring period, and the measurement cannot be carried out at any time. Therefore, a new device and method for measuring caster angle and caster angle of a vehicle kingpin is urgently needed.
Disclosure of Invention
The invention aims to provide a method and a device for measuring a caster angle and a caster angle of a kingpin of a vehicle.
The technical scheme adopted by the invention is as follows:
a vehicle kingpin caster and kingpin inclination measuring device comprises a fixing part, a kingpin caster adjusting part, a kingpin inclination adjusting part and a measuring part;
the fixing part is used for clamping a tire;
when the caster angle of the main pin is installed, the caster angle adjusting part of the main pin 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 inclination angle of the main pin is arranged, the inclination angle adjusting part of the main pin is arranged on the fixing part and 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 kingpin caster angle adjusting part and is used for measuring the vehicle kingpin caster angle;
the measuring part is arranged on the kingpin inclination adjusting part and is used for measuring the vehicle kingpin inclination.
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 the adjusting rack, and the adjusting rack is meshed with the adjusting teeth of the 2 clamping arms; and 2, the clamping adjusting knob is rotated, and the 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 coarse adjustment mechanism, a Y-Z surface adjustment mechanism and an X-Z surface fine adjustment 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 performing coarse adjustment on the horizontal position of the measuring part; the Y-Z surface adjusting mechanism is arranged on the X-Z surface coarse adjusting mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface; the X-Z surface fine adjustment mechanism is arranged on the Y-Z surface adjustment mechanism and is used for adjusting the angle of the measuring part on the X-Z surface and performing fine adjustment on the horizontal position of the measuring part;
the kingpin inclination adjusting part comprises an X-Z surface coarse adjustment mechanism, an X-Z surface adjustment mechanism and a Y-Z surface fine adjustment 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 performing coarse adjustment on the horizontal position of the measuring part; the X-Z surface adjusting mechanism is arranged on the X-Z surface coarse 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 performing fine adjustment on the horizontal position of the measuring part;
when the caster angle and the kingpin inclination angle are measured, the X-Z surface coarse 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 knob passes through the arc-shaped adjustment groove on the adjustment part body and then passes through the vertical groove on the fixing part body; the X-Z surface coarse adjustment knob can be unscrewed or screwed, the adjusting part body can move up and down along the vertical groove on the fixing part body after being unscrewed, the proper Z-position of the measuring part is ensured, and meanwhile, the angle of the adjusting part body can be adjusted on the X-Z surface along the arc-shaped adjusting groove on the adjusting part body, so that the horizontal position of the measuring part is coarsely 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 shaft of the linear supporting piece, and the measuring surface adjusting block 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 the adjusting part body of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block is connected with one end shaft of the L-shaped supporting piece, and the measuring surface adjusting block 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 caster angle and the kingpin inclination 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 adjusting knobs with gears at the end heads, the gears are meshed with adjusting racks on arc-shaped grooves on horizontal adjusting blocks of the Y-Z surface adjusting mechanism (the X-Z surface adjusting mechanism), the angle of the horizontal adjusting blocks is adjusted on the X-Z surface (the Y-Z surface) along the arc-shaped grooves on the horizontal adjusting blocks by rotating the fine adjustment adjusting knobs, and the horizontal position of the measuring part is finely adjusted.
According to the scheme, the measuring part comprises a slide rail with a bubble type level meter, 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 a measuring arm of the digital display angle ruler, and the infrared linear lasers emit light on the Y-Z surface to form a linear line.
According to the scheme, the measuring arm is of an arc-shaped structure, so that an infrared linear laser can be conveniently installed.
The invention also provides a method for measuring the caster angle and the inner tilt 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 fixing part clamps the tire, and the caster angle of the kingpin of the vehicle are fixed on the tire; the measuring part is kept at a proper height and on a proper measuring surface through the adjustment of the caster angle 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, enabling the digital display angle ruler to move the digital display angle ruler along the slide rail, and enabling the infrared line laser to emit infrared lines to irradiate the center position of the shock absorber at the fixed end of the vehicle body and the center position of the lower end of the steering knuckle respectively; and at the moment, subtracting 90 degrees from the measurement angle of the angle ruler to obtain the measurement value of the caster angle of the kingpin.
When the inner inclination angle of the kingpin is measured, the linear supporting piece of the Y-Z surface adjusting mechanism is replaced by the L-shaped supporting piece of the X-Z surface adjusting mechanism, and the rest parts are unchanged; through the adjustment of the kingpin inclination angle adjusting part, the measuring part is kept at a proper height and on a proper measuring surface, and the slide rail of the measuring part is adjusted to be vertical; opening a measuring arm of the digital display angle ruler, enabling the digital display angle ruler to slide on the slide rail along the Y direction in the horizontal direction, and enabling an infrared word line emitted by the infrared word line laser to irradiate the center position of the shock absorber at the fixed end of the vehicle body and the center position of the lower end of the steering knuckle respectively; and at the moment, subtracting 90 degrees from the measurement angle of the angle ruler to obtain the measurement value of the inner inclination angle of the kingpin.
The invention has the following beneficial effects:
by arranging the fixing part, the kingpin caster angle adjusting part, the kingpin inclination adjusting part and the measuring part, the angles of the measuring part on an X-Z surface and a Y-Z surface are adjusted, and the measuring part is ensured to be on a proper measuring surface, so that the vehicle kingpin inclination and the kingpin inclination are measured, and the test is simple, convenient and quick;
the accuracy of a measuring result is ensured by arranging an X-Z surface coarse 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, convenience in operation, capability of quickly and conveniently measuring the caster angle and the caster angle of the main pin of the vehicle, and improvement on the working efficiency;
the precision is reliable, and the problems of difficulty in measurement operation, waste of working hours and the like at present can be solved;
the size can be adjusted, and the measurement requirements of the caster angle and the inner inclination angle of the kingpin of various types of kingpins can be met.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a vehicle kingpin caster and caster measurement apparatus;
FIG. 2 is a schematic view of the construction of the vehicle kingpin caster and kingpin inclination measurement apparatus (excluding the clamp arm);
FIG. 3 is a schematic structural view of the fixing portion;
FIG. 4 is a schematic view showing a connection structure of the grip adjusting knob and 2 grip arms;
FIG. 5 is a schematic structural view of the caster adjustment part;
FIG. 6 is a schematic structural view of a kingpin inclination adjusting unit;
FIG. 7 is a schematic view showing a connection structure of the Y-Z surface adjustment mechanism and the X-Z surface fine adjustment mechanism;
FIG. 8 is a schematic view showing a connection structure of the measuring section and the leveling block;
FIG. 9 is a schematic diagram of the operation of a 2 IR line laser;
FIG. 10 is a schematic illustration of a test of caster angle of a kingpin of a vehicle;
FIG. 11 is a schematic view from perspective A of FIG. 10;
FIG. 12 is a schematic view of a vehicle kingpin inclination test;
FIG. 13 is a schematic view from perspective 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 1, a clamping arm, a 2, a fixing part body, a 3, a clamping adjusting knob, a adjusting part body, a 5, an X-Z surface coarse adjusting knob, a vertical groove, B, an arc adjusting groove, 6, a measuring surface adjusting block, 7, a horizontal adjusting block, 8, a fine adjusting knob, C, an arc groove, 9, a sliding rail, 10, a digital display angle ruler, 11, an infrared linear laser, 12, a transmission shaft, 13, a stabilizer bar, 14, a steering gear, 15, a vehicle body fixing end of a shock absorber, 16, a steering knuckle lower end, 17, a linear supporting piece, 17-1 and an L-shaped supporting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit 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, which includes 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 an X-Z surface and a Y-Z surface so as to ensure that the measuring part C is on a proper measuring surface; and 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 main pin of the vehicle.
The supporting members of the caster angle measuring device and the caster angle measuring device are different from each other (the supporting plate of the caster angle measuring device is the linear supporting member 17, and the supporting member of the caster angle measuring device is the L-shaped supporting member 17-1), and other components can be shared. The following describes the structure of the caster angle measuring apparatus in detail.
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 penetrates through the fixing part body 2 and then is connected with an adjusting rack, and the adjusting rack is meshed with the adjusting teeth of the 2 clamping arms 1; and the clamping adjusting knob 3 is rotated to open or close the 2 clamping arms 1, so that the clamping and the loosening of the tire are realized.
The adjusting part B comprises an X-Z surface coarse 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 performing coarse adjustment on the horizontal position of the measuring part C. The Y-Z surface adjusting mechanism is arranged on the X-Z surface coarse adjusting mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface. The X-Z surface fine adjustment mechanism is arranged on the Y-Z surface adjustment mechanism and is used for adjusting the angle of the measuring part C on the X-Z surface and performing fine adjustment on the horizontal position of the measuring part C.
The structure of the adjustment 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 fixing part body 2; the X-Z surface coarse adjustment knob 5 can be loosened or tightened, the adjustment part body 4 can move up and down along the vertical groove a on the fixing part body 2 after being loosened, the Z-direction position of the measurement part C is ensured to be proper, and meanwhile, the adjustment part body 4 can adjust the angle along the arc-shaped adjustment groove b on the adjustment part body on the X-Z surface, so that the horizontal position of the measurement part C is coarsely adjusted. The Y-Z surface adjusting mechanism comprises a linear supporting piece 17, a measuring surface adjusting block 6 and a horizontal adjusting block 7; the linear supporting 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 straight-line-shaped 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 straight-line-shaped supporting piece 17 can be fastened and connected through bolts and nuts); 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 the measuring surface angle of the measuring part is ensured to be 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, the angle of the horizontal adjustment block 7 is adjusted on the X-Z surface along the arc-shaped groove C on the horizontal adjustment block 7 by rotating the fine adjustment knob 8, and the horizontal position of the measuring part C is finely adjusted.
The measuring part C comprises a slide rail 9 with a bubble type level gauge, a digital display angle ruler 10 and 2 infrared linear lasers 11; the slide rail 9 is fixed on the horizontal adjusting block 7 of the Y-Z surface adjusting mechanism; the digital display angle ruler 10 can slide on the slide rail 9 in the horizontal direction; 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, wherein the measuring arm is of an arc structure, and the infrared linear lasers 11 emit light on the Y-Z surface to form a linear line.
Example 2
A vehicle kingpin caster angle and kingpin inclination angle measuring method adopts the vehicle kingpin caster angle and kingpin inclination angle measuring device to measure the vehicle kingpin caster angle and kingpin inclination angle; the method comprises the following steps:
when the caster angle of the kingpin is measured, the fixing part clamps the tire, and the caster angle 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, enabling the digital display angle ruler to move the digital display angle ruler along the slide rail, and enabling the infrared line laser to emit infrared lines to irradiate the center position of the shock absorber at the fixed end of the vehicle body and the center position of the lower end of the steering knuckle respectively; and at the moment, subtracting 90 degrees from the measurement angle of the angle ruler to obtain the measurement value of the caster angle of the kingpin.
When the inner inclination angle of the kingpin is measured, the L-shaped supporting piece 17-1 is replaced by the linear supporting piece 17 of the Y-Z surface adjusting mechanism to form an X-Z surface adjusting mechanism, and the rest of the X-Z surface adjusting mechanism is unchanged; through the adjustment of the kingpin inclination angle adjusting part, the measuring part is kept at a proper height and on a proper measuring surface, and the slide rail of the measuring part is adjusted to be vertical; opening a measuring arm of the digital display angle ruler, enabling the digital display angle ruler to slide on the slide rail along the Y direction in the horizontal direction, and enabling an infrared word line emitted by the infrared word line laser to irradiate the center position of the shock absorber at the fixed end of the vehicle body and the center position of the lower end of the steering knuckle respectively; and at the moment, subtracting 90 degrees from the measurement angle of the angle ruler to obtain the measurement value of the inner inclination angle of the kingpin.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a vehicle swizzle caster angle and swizzle inclination measuring device which characterized in that: the device comprises a fixing part, a kingpin caster angle adjusting part, a kingpin inclination angle adjusting part and a measuring part;
the fixing part is used for clamping a tire;
when the caster angle of the kingpin is measured, the caster angle adjusting part is arranged on the fixed part and used for adjusting the angles of the measuring part on an X-Z surface and a Y-Z surface so as to keep the measuring part horizontal;
when the inclination angle of the kingpin is measured, the kingpin inclination angle adjusting part is arranged on the fixing part and used for adjusting the angle of the measuring part on the X-Z plane so as to keep the measuring part at a proper angle;
the measuring part is arranged on the kingpin caster angle adjusting part and is used for measuring the vehicle kingpin caster angle;
the measuring part is arranged on the kingpin inclination adjusting part and is used for measuring the vehicle kingpin inclination.
2. The vehicle kingpin 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 the adjusting rack, and the adjusting rack is meshed with the adjusting teeth of the 2 clamping arms; and 2, the clamping adjusting knob is rotated, and the clamping arms are opened or closed, so that the clamping and the loosening of the tire are realized.
3. The vehicle kingpin caster and caster measurement apparatus of claim 1, wherein: the caster angle adjusting part comprises an X-Z surface coarse adjustment mechanism, a Y-Z surface adjustment mechanism and an X-Z surface fine adjustment 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 performing coarse adjustment on the horizontal position of the measuring part; the Y-Z surface adjusting mechanism is arranged on the X-Z surface coarse adjusting mechanism and is used for adjusting the angle of the measuring part on the Y-Z surface; the X-Z surface fine adjustment mechanism is arranged on the Y-Z surface adjustment mechanism and is used for adjusting the angle of the measuring part on the X-Z surface and performing fine adjustment on the horizontal position of the measuring part;
the kingpin inclination adjusting part comprises an X-Z surface coarse adjustment mechanism, an X-Z surface adjustment mechanism and a Y-Z surface fine adjustment 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 performing coarse adjustment on the horizontal position of the measuring part; the X-Z surface adjusting mechanism is arranged on the X-Z surface coarse 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 performing fine adjustment on the horizontal position of the measuring part;
when the caster angle and the kingpin inclination angle are measured, the X-Z surface coarse adjustment mechanism is shared; the X-Z surface fine adjustment mechanism and the Y-Z surface fine adjustment mechanism are shared.
4. The vehicle kingpin caster and caster measurement apparatus of claim 3, wherein: 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 knob passes through the arc-shaped adjustment groove on the adjustment part body and then passes through the vertical groove on the fixing part body; the movement of the adjusting knob is roughly adjusted on the X-Z surface, so that the adjusting and measuring part moves on the X-Z surface.
5. The vehicle kingpin caster and caster measurement apparatus as recited in claim 3 or 4, 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 shaft of the linear supporting piece, and the measuring surface adjusting block 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 the adjusting part body of the X-Z surface coarse adjustment mechanism; the measuring surface adjusting block is connected with one end shaft of the L-shaped supporting piece, and the measuring surface adjusting block 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 caster angle and the kingpin inclination angle are measured.
6. The vehicle kingpin caster and caster measurement apparatus of claim 3, wherein: the X-Z surface fine adjustment mechanism and the Y-Z surface fine adjustment mechanism comprise fine adjustment adjusting knobs with gears at the end heads, the gears are meshed with adjusting racks on arc-shaped adjusting grooves on the horizontal adjusting blocks, the angles of the horizontal adjusting blocks are adjusted on the X-Z surface and the Y-Z surface along the arc-shaped adjusting grooves on the horizontal adjusting blocks by rotating the fine adjustment adjusting knobs, and the horizontal positions of the measuring parts are finely adjusted.
7. The vehicle kingpin caster and caster measurement apparatus of claim 1, wherein: the measuring part comprises a slide rail with a bubble level gauge, 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 a measuring arm of the digital display angle ruler, and the infrared linear lasers emit light on the Y-Z surface to form a linear line.
8. The vehicle kingpin caster and caster measurement apparatus of claim 1, wherein: the measuring arm is of an arc-shaped structure.
9. A method for measuring a caster angle and an inner tilt angle of a kingpin of a vehicle is characterized in that: the method employs the vehicle kingpin caster and caster measurement apparatus of any one of claims 1 to 8.
10. The vehicle kingpin caster and caster measurement method of claim 9, wherein: the method comprises the following steps:
when the caster angle of the kingpin is measured, the fixing part clamps the tire, and the caster angle of the kingpin of the vehicle are fixed on the tire; the measuring part is kept at a proper height and on a proper measuring surface through the adjustment of the caster angle 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, enabling the digital display angle ruler to move the digital display angle ruler along the slide rail, and enabling the infrared line laser to emit infrared lines to irradiate the center position of the shock absorber at the fixed end of the vehicle body and the center position of the lower end of the steering knuckle respectively; and at the moment, subtracting 90 degrees from the measurement angle of the angle ruler to obtain the measurement value of the caster angle of the kingpin.
When the inner inclination angle of the kingpin is measured, the linear supporting piece of the Y-Z surface adjusting mechanism is replaced by the L-shaped supporting piece of the X-Z surface adjusting mechanism, and the rest parts are unchanged; through the adjustment of the kingpin inclination angle adjusting part, the measuring part is kept at a proper height and on a proper measuring surface, and the slide rail of the measuring part is adjusted to be vertical; opening a measuring arm of the digital display angle ruler, enabling the digital display angle ruler to slide on the slide rail along the Y direction in the horizontal direction, and enabling an infrared word line emitted by the infrared word line laser to irradiate the center position of the shock absorber at the fixed end of the vehicle body and the center position of the lower end of the steering knuckle respectively; and at the moment, subtracting 90 degrees from the measurement angle of the angle ruler to obtain the measurement value of the inner inclination angle of the kingpin.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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 true CN114111529A (en) | 2022-03-01 |
| CN114111529B CN114111529B (en) | 2023-10-20 |
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| CN108844487A (en) * | 2018-05-03 | 2018-11-20 | 江苏大学 | A kind of equation motorcycle race toeing-in angle measuring device |
| CN110723211A (en) * | 2019-09-06 | 2020-01-24 | 江苏大学 | Adjusting device and angle adjusting method for inner inclination angle and back inclination angle of main pin of double-cross-arm suspension |
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| CN114111529B (en) | 2023-10-20 |
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