CN102806944A - Method and device for adjusting caster angle of kingpin of vehicle - Google Patents
Method and device for adjusting caster angle of kingpin of vehicle Download PDFInfo
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- CN102806944A CN102806944A CN2011101448312A CN201110144831A CN102806944A CN 102806944 A CN102806944 A CN 102806944A CN 2011101448312 A CN2011101448312 A CN 2011101448312A CN 201110144831 A CN201110144831 A CN 201110144831A CN 102806944 A CN102806944 A CN 102806944A
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Abstract
The invention discloses a method for adjusting a caster angle of a kingpin of a vehicle. The method includes measuring a current value of the caster angle of the kingpin; determining the required adjustment amount for the caster angle of the kingpin according to the current value and a qualified value; computing a rotational angle of a nut of a distance rod according to the required adjustment amount and the unit change amount of a unit rotational angle, corresponding to the caster angle of the kingpin, of the nut of the distance rod; and adjusting the caster angle of the kingpin of the vehicle by turning the nut of the distance rod according to the rotational angle. According to the method for adjusting the caster angle of the kingpin of the vehicle, the current value of the caster angle of the kingpin is measured by a four-wheel position finder, then the required adjustment amount for the caster angle of the kingpin is determined according to the current value of the caster angle of the kingpin and the qualified value, the rotational angle of the nut of the distance rod is computed according to the required adjustment amount, and the caster angle of the kingpin is adjusted by adjusting the nut of the distance rod by one step, so that operational efficiency of adjustment for the caster angle of the kingpin can be improved, and labor intensity is reduced. The invention further discloses a device for adjusting the caster angle of the kingpin of the vehicle.
Description
Technical field
The present invention relates to the wheel alignment adjustment technology, especially relate to a kind of vehicle kingpin caster angle method of adjustment.In addition, the invention still further relates to a kind of vehicle wheel caster angle regulating device of implementing said method.
Background technology
Should have certain relative position relation between the wheel of vehicle, stub and the axletree.The installation of this certain relative position relation of maintenance is called wheel alignment, and the parameter of wheel alignment has toeing-in, camber angle, kingpin caster angle and Kingpin inclination angle.
Stub is the center of gyration of the wheel flutter of automobile when turning to, and is a thicker bearing pin.The automobile of present many independent suspensions has not had stub.But in wheel alignment, still continuing to use this noun of stub, its synonym as the steer axis of wheel flutter, think wheel flutter when turning to, is that steer axis rotates to the left and right with the stub.
Kingpin caster angle is meant from wheel face and observes, the angle that forms between main pin axis and the vertical line through the front-wheel center.Kingpin caster angle can form back positive balancing torque, makes wheel get back to the straight-line travelling position, thereby guarantees that vehicle keeps stability line to go, and kingpin caster angle is unsuitable excessive, and the kingpin caster angle of vehicle generally is no more than 2 degree-3 degree.
In the adjustment process of wheel alignment; The parameter of camber angle and toeing-in can directly show on the telltale of four-wheel position finder; Can directly adjust the parameter of camber angle and toeing-in according to the parameter on the telltale; Telltale shows the variation of correlation parameter in real time, directly is adjusted to till the acceptability limit.
After front-wheel camber angle adjustment is qualified, adjust kingpin caster angle again, but the parameter of kingpin caster angle can not observe directly on the four-wheel position finder telltale, more can not be in course of adjustment shows in real time.
The method of measurement of existing kingpin caster angle is: after the parameter adjustment of front-wheel camber angle is qualified, bearing circle is turned right, when the rotation angle disk pointer reaches 20 number of degrees values under the wheel; The relative keys of pinning on the location shaven head of four-wheel position finder is measured; The left-handed turning bearing circle stops up to 20 degree then, pins the relative keys on the shaven head of location once more, through above-mentioned measurement; Four-wheel position finder just can calculate the parameter of kingpin caster angle and be presented on the telltale, and the commissioning staff is according to recording kingpin caster angle adjustment.
Repeat above-mentioned method of measurement after the adjustment; Just can know adjusted kingpin caster angle, if the parameter of kingpin caster angle then also need repeat above-mentioned adjustment not when acceptability limit; And repeat the parameter that above-mentioned method of measurement records kingpin caster angle, till the parameter of kingpin caster angle reaches acceptability limit.
Can find out that the method for adjustment of above-mentioned kingpin caster angle causes in the adjustment process of kingpin caster angle in practical application, not have quantification and data presented guidance in real time, can only lean on the commissioning staff to repeat adjustment by rule of thumb, it is low to adjust efficient, and labour intensity is big.The new employee need repeat to adjust more than three times, veteran employee's first-time qualification rate 20%, and the kingpin caster angle adjustment has become vehicle emphasis bottleneck operation aborning, has a strong impact on carrying out smoothly of ordinary production.
Summary of the invention
The present invention provides a kind of vehicle kingpin caster angle method of adjustment and device, in order to solve the deficiency of prior art, improves kingpin caster angle adjustment operating efficiency, reduces labour intensity.
The invention provides a kind of method of adjustment of vehicle kingpin caster angle, comprising:
Measure the currency of kingpin caster angle;
Confirm the need accent amount of kingpin caster angle according to said currency and acceptance value;
According to said accent amount and the corresponding wheel caster angular unit of the propelling rod nut rotation unit angle variation of needing, calculate the rotational angle of said propelling rod nut;
According to said rotational angle rotary thrust stem nut, realize the adjustment of vehicle kingpin caster angle.
The present invention also provides a kind of vehicle wheel caster angle regulating device, comprises handle, rotary head, calibrated disc and sleeve; One end of said handle is connected with rotary head to drive said rotary head unidirectional rotation; Said sleeve is fixedly mounted on an end of said rotary head, and the other end of said rotary head is captiveed joint with said calibrated disc; Jacket casing is connected on the said propelling rod nut; Said handle is provided with reference graduation, is used for when said handle rotates with the rotation of drive propelling rod nut, through said reference graduation and calibrated disc metering rotational angle.
Vehicle kingpin caster angle method of adjustment provided by the invention and device; Measure the currency of kingpin caster angle through four-wheel position finder; The need accent amount of confirming kingpin caster angle according to the currency and the acceptance value of kingpin caster angle again according to the rotational angle of need accent amount calculating propelling rod nut, realizes the adjustment of kingpin caster angle through once adjusting the propelling rod nut at last; Can improve kingpin caster angle adjustment operating efficiency, reduce labour intensity.
Description of drawings
Fig. 1 is the structural representation of the propelling rod that is suitable for of first embodiment of the invention vehicle kingpin caster angle method of adjustment;
The diagram of circuit of the vehicle kingpin caster angle method of adjustment that Fig. 2 provides for first embodiment of the invention;
The front view of the vehicle wheel caster angle regulating device that Fig. 3 provides for second embodiment of the invention;
Fig. 4 is the left view of the vehicle wheel caster angle regulating device among Fig. 3.
Reference numeral:
Swing arm 2-propelling rod under the 1A-subframe 1-
The 3-propelling rod nut 31-first propelling rod nut 32-second propelling rod nut
4-handle 5-calibrated disc 6-rotary head
7-turns to change-over switch 8-reference graduation
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
With reference to figure 1, Fig. 1 is the structural representation of the propelling rod that is suitable for of first embodiment of the invention vehicle kingpin caster angle method of adjustment.
At first need to prove; As shown in Figure 1; Only show the part of subframe 1A among the figure, following swing arm 1 is installed on the subframe 1A, and the lower end of the steering ball end (not shown in figure 1) in an end of propelling rod 2 (left upper end of the propelling rod 2 among Fig. 1) and the following swing arm 1 is connected; Adjust the position of attachment point under coupled following swing arm bulb position that connects and then the adjustment stub through the length variations of propelling rod 2, thereby change casterangle.
The other end of propelling rod 2 (bottom righthand side of propelling rod 2 among Fig. 1) has propelling rod nut 3, and in the actual installation, the bottom righthand side of propelling rod 2 also is connected (not shown in figure 1) with subframe.
The quantity of propelling rod nut 3 can be one, can adjust the effective length of propelling rod 2 with respect to the position of propelling rod 2 through regulating propelling rod nut 3.Propelling rod nut 3 in the present embodiment specifically comprises the first propelling rod nut 31 in propelling rod 2 outsides and the effect that inboard 32, two nuts of the second propelling rod nut can play mutual locking positioning.
In the adjustment of kingpin caster angle, can adjust kingpin caster angle through the length of adjustment propelling rod 2, particularly; Shortening propelling rod 2 effective lengths then kingpin caster angle reduce; Just shorten the stressed length of work of propelling rod 2, increase the then kingpin caster angle increase of propelling rod 2 effective lengths, that is to say; When kingpin caster angle during greater than acceptance value; Unclamp the propelling rod 2 second inboard propelling rod nuts 32 so that remove locking, it can be rotated, through the first propelling rod nut 31 in the outside of screwing to the first reasoning stem nut 31; Make win propelling rod nut 31 and the second propelling rod nut 32 to the inboard directions motion of propelling rod 2, kingpin caster angle is turned down thereby can shorten propelling rod 2 effective lengths.When kingpin caster angle during less than acceptance value; Unclamp the first propelling rod nut 31 in the outside so that remove locking to the second reasoning stem nut 32; The second inboard propelling rod nut 32 of screwing this moment; Just adjust the lateral direction motion of the first propelling rod nut 31 and the second propelling rod nut 32, kingpin caster angle is transferred big thereby can increase propelling rod 2 effective lengths to propelling rod 2.
Below in conjunction with accompanying drawing 1 and accompanying drawing 2 explanations vehicle kingpin caster angle method of adjustment provided by the invention.
With reference to Fig. 2, the diagram of circuit of the vehicle kingpin caster angle method of adjustment that Fig. 2 provides for first embodiment of the invention.
In the first embodiment of the present invention, vehicle kingpin caster angle method of adjustment comprises:
Particularly, kingpin caster angle is transferred to 0 degree, on the first propelling rod nut 31 in the outside, make sign; Rotate the first propelling rod nut, 31 set angles, specifically can select 360 degree or 720 degree or other angles, four-wheel position finder is measured the variation of corresponding kingpin caster angle; The variation of kingpin caster angle multiply by the unit angle of setting again divided by the set angle that the first propelling rod nut 31 is rotated, and draws wheel caster angular unit variation.
More specifically, the unit angle can be 30 degree, 60 degree, 90 degree or 180 degree, can specifically confirm suitable unit angle according to the adjusting accuracy of kingpin caster angle.For example, if propelling rod nut 3 rotates 360 degree, the variation that four-wheel position finder is measured corresponding kingpin caster angle is 0.48 degree, then can calculate according to said method, and moving 30 degree of propelling rod nut 3 revolutions, wheel caster angular unit variation is ± 0.04 degree.Moving 60 degree of propelling rod nut 3 revolutions, wheel caster angular unit variation is ± 0.08 degree.Moving 90 degree of propelling rod nut 3 revolutions, wheel caster angular unit variation is ± 0.12 degree.Moving 180 degree of propelling rod nut 3 revolutions, wheel caster angular unit variation is ± 0.24 degree.
Need to prove; Step 10; Demarcate the corresponding wheel caster angular unit of propelling rod nut rotation unit angle variation; Be not the kingpin caster angle method of adjustment that provides of present embodiment necessary step all in practical implementation, after demarcating the corresponding wheel caster angular unit of propelling rod nut rotation unit angle variation, follow-up each adjustment is all adjusted and is got final product according to demarcating unit variation after measuring.
The mensuration mode preferably can be measured the currency of kingpin caster angle through four-wheel position finder, and currency is presented on the telltale of four-wheel position finder.
Can rotate through manpower, preferably adjust the anglec of rotation of propelling rod nut through adjustment tool with angular measure function.
Concrete application process when the propelling rod casterangle method of adjustment that specifying first embodiment of the invention below provides is adjusted in the four-wheel location:
If the acceptance value of kingpin caster angle be 0.8 degree to 1.6 degree, the currency of measuring kingpin caster angle through four-wheel position finder is 0 degree.The currency of kingpin caster angle and the difference of acceptance value are 0.8 degree-1.6 degree, and the currency of kingpin caster angle needs the first propelling rod nut 31 in the conter clockwise adjustment outside less than acceptance value, and the second inboard propelling rod nut 32 of screwing can be transferred kingpin caster angle big.
The first propelling rod nut 31 in the outside need rotate counterclockwise 600 degree to 1200 degree; In order to make adjustment more accurate; Can get intermediate value 900 degree; The first propelling rod nut 31 is rotated counterclockwise 900 degree, just can kingpin caster angle once be adjusted in the scope of acceptance value the second propelling rod nut 32 is fastening.
Can find out; The kingpin caster angle method of adjustment that present embodiment provides is through the currency of four-wheel position finder measurement kingpin caster angle, the need accent amount of confirming kingpin caster angle according to the currency and the acceptance value of kingpin caster angle again; Calculate the rotational angle of propelling rod nut according to need accent amount; Realize the adjustment of kingpin caster angle through once adjusting the propelling rod nut at last, can improve kingpin caster angle adjustment operating efficiency, reduce labour intensity.
With reference to figure 3 and Fig. 4, the front view of the vehicle wheel caster angle regulating device that Fig. 3 provides for second embodiment of the invention; Fig. 4 is the left view of the vehicle wheel caster angle regulating device among Fig. 3.
The vehicle wheel caster angle regulating device that second embodiment of the invention provides comprises handle 4, calibrated disc 5, rotary head 6, turns to change-over switch 7 and sleeve (not shown).
One end of handle 4 is connected with rotary head 6 to drive rotary head 6 unidirectional rotation; Sleeve is fixedly mounted on an end of rotary head 6, and the other end of rotary head 6 is captiveed joint with calibrated disc 5; Jacket casing is connected on the propelling rod nut; Handle 4 is provided with reference graduation 8, is used for when handle 4 rotates with the rotation of drive propelling rod nut, through reference graduation 8 and calibrated disc 5 metering rotational angles.
One end of handle 4 is connected with rotary head 6, and rotary head 6 is captiveed joint with calibrated disc 5, when handle 4 drives rotary head 6 rotations; Calibrated disc 5 can rotate with rotary head 6; In the practical application, an end of rotary head 6 is equipped with the sleeve of special-purpose lengthening, and the jacket casing of special-purpose lengthening is on propelling rod nut 3; Pull handle 4, realize turn propelling rod nut 3.
Particularly, in the present embodiment, handle 4 is a long handle shape structure, and an end of handle 4 and rotary head 6 be for ratchet is connected, and turns to change-over switch 7 to be installed in an end of rotary head 6, moves to turn to change-over switch 7 can adjust the usable rotational direction of handle 4.
Calibrated disc 5 is a circular ring, and calibrated disc 5 is an angle index, and the scale increment is 30 degree or 45 degree or 60 degree or 90 degree, can confirm the scale increment of calibrated disc 5 according to actual needs, and the scale increment of the calibrated disc 5 that present embodiment provides is 90 degree.
Have reference graduation 8 on the handle 4, the tuning drive gear on the calibrated disc 5 points to reference graduation 8, can intuitively measure the rotational angle of rotary head 6, and then can measure the rotational angle of propelling rod nut.
The vehicle wheel caster angle regulating device that present embodiment provides is used for the vehicle casterangle method of adjustment that embodiment of the present invention first embodiment provides, and with the basic scale 8 on the zero degree pointed handle 4 on the calibrated disc 5, the commissioning staff pulls handle 4; Handle 4 drives rotary head 6 rotations, and then drives the sleeve rotation that is installed on the rotary head 6, and sleeve rotating band dynamicthrust stem nut 3 rotates; Because handle 4 and rotary head 6 are connected through ratchet, are in course of adjustment, after rotary head 6 turns an angle; Calibrated disc 5 also rotates respective angles with rotary head 6, at this moment, handle 4 is returned back to initial position; When handle 4 returns back to initial position; Reference graduation 8 on the handle 4 is corresponding with tuning drive gear on the calibrated disc 5, and then the rotational angle of definite propelling rod nut 3, realizes the adjustment to the vehicle kingpin caster angle.
Need to prove, in a second embodiment, also calibrated disc 5 can be installed, and angle index directly is engraved on the rotary head 6.
The vehicle wheel caster angle regulating device that present embodiment is carried can conveniently be realized the adjustment to the propelling rod nut, improves the efficient of kingpin caster angle adjustment.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (9)
1. a vehicle kingpin caster angle method of adjustment is characterized in that, comprising:
Measure the currency of kingpin caster angle;
Confirm the need accent amount of kingpin caster angle according to said currency and acceptance value;
According to said accent amount and the corresponding wheel caster angular unit of the propelling rod nut rotation unit angle variation of needing, calculate the rotational angle of said propelling rod nut;
According to said rotational angle rotary thrust stem nut, realize the adjustment of vehicle kingpin caster angle.
2. vehicle kingpin caster angle method of adjustment according to claim 1 is characterized in that, also comprise the calibration method of said unit variation, said calibration method comprises:
Kingpin caster angle is transferred to 0 degree, on the crest line of propelling rod nut, make sign;
Rotate propelling rod nut set angle, adopt four-wheel position finder to measure the variation of corresponding kingpin caster angle;
Said variation multiply by the unit angle of setting again divided by said set angle, draws wheel caster angular unit variation.
3. vehicle kingpin caster angle method of adjustment according to claim 2 is characterized in that, said unit angle is 30 degree, 60 degree, 90 degree or 180 degree.
4. vehicle kingpin caster angle method of adjustment according to claim 1 and 2; It is characterized in that; Saidly confirm the need accent amount of kingpin caster angle according to said currency and acceptance value, being specially the currency of confirming kingpin caster angle and the difference of acceptance value is the need accent amount of kingpin caster angle.
5. vehicle kingpin caster angle method of adjustment according to claim 1 and 2 is characterized in that, the said anglec of rotation of adjusting the propelling rod nut through the adjustment tool with angular measure function that is specially according to said rotational angle rotary thrust stem nut.
6. a vehicle wheel caster angle regulating device is characterized in that, comprises handle (4), rotary head (6), calibrated disc (5) and sleeve; One end of said handle (4) is connected with rotary head (6) to drive said rotary head (6) unidirectional rotation; Said sleeve is fixedly mounted on an end of said rotary head (6), and the other end of said rotary head (6) is captiveed joint with said calibrated disc (5); Jacket casing is connected on the said propelling rod nut; Said handle (4) is provided with reference graduation (8), is used for when said handle (4) rotates with the rotation of drive propelling rod nut, through said reference graduation (8) and calibrated disc (5) metering rotational angle.
7. vehicle wheel caster angle regulating device according to claim 6 is characterized in that, an end of said handle (4) is connected for ratchet with said rotary head (6).
8. vehicle wheel caster angle regulating device according to claim 7 is characterized in that, said device also is equipped with and turns to change-over switch (7), is used to adjust the rotation direction that handle (4) drives rotary head (6) unidirectional rotation.
9. vehicle wheel caster angle regulating device according to claim 6 is characterized in that, the scale increment of said calibrated disc (5) upper angle scale is 30 degree, 60 degree, 90 degree or 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144831.2A CN102806944B (en) | 2011-05-31 | 2011-05-31 | Method and device for adjusting caster angle of kingpin of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144831.2A CN102806944B (en) | 2011-05-31 | 2011-05-31 | Method and device for adjusting caster angle of kingpin of vehicle |
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| Publication Number | Publication Date |
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| CN102806944A true CN102806944A (en) | 2012-12-05 |
| CN102806944B CN102806944B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110144831.2A Active CN102806944B (en) | 2011-05-31 | 2011-05-31 | Method and device for adjusting caster angle of kingpin of vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260781A (en) * | 2014-10-20 | 2015-01-07 | 安徽江淮汽车股份有限公司 | Method for calibrating camber angle and caster angle of wheel |
| CN108709530A (en) * | 2018-04-18 | 2018-10-26 | 北京博科测试系统股份有限公司 | Automobile front wheel kingpin caster angle measuring device and method |
| CN109625125B (en) * | 2018-09-20 | 2021-04-16 | 蔚来(安徽)控股有限公司 | Pre-installation method for subframe assembly |
| CN114111529A (en) * | 2021-11-10 | 2022-03-01 | 东风汽车集团股份有限公司 | Method and device for measuring caster angle and inner tilt angle of vehicle kingpin |
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| CN101097175A (en) * | 2006-07-01 | 2008-01-02 | 深圳市元征科技股份有限公司 | Automatic master pin measuring means of automobile wheels orientator |
| CN101979268A (en) * | 2010-09-25 | 2011-02-23 | 合肥工业大学 | Automobile steering wheel shimmy control method |
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2011
- 2011-05-31 CN CN201110144831.2A patent/CN102806944B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097175A (en) * | 2006-07-01 | 2008-01-02 | 深圳市元征科技股份有限公司 | Automatic master pin measuring means of automobile wheels orientator |
| CN101979268A (en) * | 2010-09-25 | 2011-02-23 | 合肥工业大学 | Automobile steering wheel shimmy control method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260781A (en) * | 2014-10-20 | 2015-01-07 | 安徽江淮汽车股份有限公司 | Method for calibrating camber angle and caster angle of wheel |
| CN104260781B (en) * | 2014-10-20 | 2016-06-15 | 安徽江淮汽车股份有限公司 | A kind of camber angle and back rake angle adjusting process |
| CN108709530A (en) * | 2018-04-18 | 2018-10-26 | 北京博科测试系统股份有限公司 | Automobile front wheel kingpin caster angle measuring device and method |
| CN108709530B (en) * | 2018-04-18 | 2023-05-23 | 北京博科测试系统股份有限公司 | Device and method for measuring caster angle of front wheel kingpin of automobile |
| CN109625125B (en) * | 2018-09-20 | 2021-04-16 | 蔚来(安徽)控股有限公司 | Pre-installation method for subframe assembly |
| CN114111529A (en) * | 2021-11-10 | 2022-03-01 | 东风汽车集团股份有限公司 | Method and device for measuring caster angle and inner tilt angle of vehicle kingpin |
| CN114111529B (en) * | 2021-11-10 | 2023-10-20 | 东风汽车集团股份有限公司 | Method and device for measuring caster angle and caster angle of vehicle kingpin |
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| CN102806944B (en) | 2014-12-03 |
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