CN102721825A - Hall effect type automobile wheel speed detecting device with buffer - Google Patents
Hall effect type automobile wheel speed detecting device with buffer Download PDFInfo
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- CN102721825A CN102721825A CN201210188635XA CN201210188635A CN102721825A CN 102721825 A CN102721825 A CN 102721825A CN 201210188635X A CN201210188635X A CN 201210188635XA CN 201210188635 A CN201210188635 A CN 201210188635A CN 102721825 A CN102721825 A CN 102721825A
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Abstract
The invention discloses a Hall effect type automobile wheel speed detecting device with a buffer. The Hall effect type automobile wheel speed detecting device mainly comprises an L-shaped connecting rod, a coded disc mechanism assembly, a wheel speed detecting mechanism assembly, the buffer and an upper fixing mechanism assembly; the coded disc mechanism assembly on the lower portion of the wheel speed detecting device is fixedly mounted on a hub of a detected automobile I by a connecting device III, so that a coded disc and a wheel rotate synchronously; and a strong magnet in the upper fixing mechanism assembly is attracted onto an automobile body, so that the upper portion of the wheel speed detecting device is fixed. A coded disc structure with mounting holes radially arranged at unequal angles can be quickly and conveniently mounted on the hub of the automobile and is applicable to different types of automobiles with different quantities of nuts, and pulse signal testing holes which are uniformly distributed are arranged on the edge of the coded disc, so that the wheel speed is directly measured; and a vertical buffering mechanism in the device eliminates influences of vertical vibration to the wheel speed detecting device when the automobile runs, and the Hall effect type automobile wheel speed detecting device is low in cost, convenient to install and high in test precision and universality.
Description
Technical field
The present invention relates to a kind of detection system that is applied to automotive field, specifically, the present invention relates to a kind of hall effect type automobile wheel speed pick-up unit that has impact damper.
Background technology
When vehicle carried out actual road test, wheel speed is one of important test parameter, and was significant for the evaluation of vehicle performance.Independently take turns fast proving installation at present and have a try when testing carrying out the road, have that versatility is poor, receive shortcomings such as ectocine is big in the test, and overseas equipment costs an arm and a leg, these are all restricting the test of taking turns fast parameter to a certain extent.
Through retrieval, (1) patent publication No.: CN101339199A; Denomination of invention: electromagnetic type automobile wheel speed sensor and installation method thereof; Open day: on January 7th, 2009; The applying date: on August 1st, 2008.This patent proposes a kind of electromagnetic type automobile wheel speed sensor; Gear ring is fixed on the wheel hub with wheel; The utilization electromagnetic induction principle, the magnetic flux checker that is utilized in gear ring tooth root, gear tip clearance in the rotation process causes the variation of induction electromotive force, and then records vehicle wheel rotational speed.But these class methods change because of the amplitude of sensor output signal, can't test the vehicle wheel rotational speed under the low speed of a motor vehicle operating mode; And its when installing magnetic pole and gear ring remain a certain gap, be difficult to guarantee.
(2) patent publication No.: CN102211505A; Denomination of invention: tire rotational speed and near field noise measurement mechanism; Open day: on October 12nd, 2011; The applying date: on May 6th, 2011.This patent proposes a kind of method of testing of tire rotational speed, and the tally function of utilization optoelectronic switch is equipped with the gear ring inductive disks and comes the drawings rotating speed.But the optoelectronic switch in the method is subject to the influence of external light source, and the result who causes rotating speed to measure is inaccurate.
(3) patent No.: CN202159070U; Denomination of invention: a kind of new automobile measurement mechanism; Open day: on March 7th, 2012; The applying date: on May 30th, 2011.This patent is put forward a kind of method of testing of tire rotational speed altogether; The rotor of wheel speed sensors is clamped in through the claw type chuck on the lateral surface of hub nut with wheel; The wheel speed sensors shell connects with vehicle body, and the relative motion through rotor sensor and stator measures vehicle wheel rotational speed indirectly.But in this method, can't guarantee the pretightning force between claw type chuck and the hub nut, be prone to have an accident in the wheel driving process, and the size versatility of claw type chuck is poor, measurement mechanism can not be applicable to the installation of multiple wheel diameters.
Realistic problem to wheel speed detects the invention discloses a kind of hall effect type automobile wheel speed pick-up unit that has impact damper, has realized the fast detecting of wheel speed.In this device development and Design have the code-disc structure of non-equal angles radiation mounting hole, can be installed in quickly and easily on the wheel hub of vehicle, and be suitable for the vehicle of different nut quantity; The edge of code-disc is provided with equally distributed pulsed test signal hole, cooperates with Hall switch, has realized the direct measurement of wheel speed; Vertical buffer gear has eliminated that vertical vibration is to taking turns the influence of fast test result in the vehicle operating process in the device, and cost is low, and is easy for installation, and measuring accuracy is high, has very strong versatility.
Summary of the invention
Technical matters to be solved by this invention is to have overcome the problem that prior art exists, and a kind of hall effect type automobile wheel speed pick-up unit that has impact damper is provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize:
The described hall effect type automobile wheel speed pick-up unit that has impact damper mainly is made up of L shaped connecting link A, code-disc mechanism assembly B, the fast assembly C of testing agency of wheel, impact damper D and top fixed mechanism assembly E.The described hall effect type automobile wheel speed pick-up unit bottom that has impact damper is fixedly mounted on its code-disc mechanism assembly B by on the wheel hub of examination vehicle I through switching device assembly III and nut, realizes the run-in synchronism of code-disc 5 and wheel; Strong magnet 13 among the described top fixed mechanism assembly E is adsorbed on the car body, realizes that the top of wheel speed detector is fixed.
Described switching device assembly III is made up of the identical switching swivel nut a of rolling hitch structure, and described switching swivel nut a is a T shape structure, and the big end of T shape structure is a hollow hexahedron structure that has internal thread, and the small end of T shape structure is one to have externally threaded screw rod.Transfer when installing will taking turns speed detector and automotive hub; According to 3 principles of confirming a plane; Three the original hold-down nuts above the wheel hub of dismantling; The bolt of the internal thread of the big end of T shape structure and three nuts of dismantling is tightened successively (promptly the big end of T shape structure of this moment serves as the effect of wheel hub hold-down nut, and its hollow degree of depth is greater than the length that institute's snapping bolt of wanting protrudes in the axial direction), the screw rod of T shape structure small end passes takes turns in the speed detector suitable installation groove b on the code-disc 5; And by three cover nuts and pads code-disc is fastened on the automotive hub, realize that the bottom of wheel speed detector is fixed.The dimensions fibrous root of described switching swivel nut a is decided according to the size of tested vehicle I boss bolt.
Described L shaped connecting link A is a L shaped tubular structure; Its long end is for be staircase structure with two kinds of different-diameters vertically; Diameter near the short end of L shaped connecting rod A is bigger; Diameter away from the short end of L shaped connecting rod A is less, penetrates connecting rod arrival fixed position so that take turns the clamp nut of the fast assembly C of testing agency.Top and axle journal change location at long end are provided with binding thread; Screw top is connected with the internal thread of lower spring cup 16; Make L shaped connecting link A and impact damper D be connected to an integral body, the threaded engagement of axle journal change location is fixed taking turns the fast assembly C of testing agency with the clamp nut of taking turns the fast assembly C of testing agency; Short end is the link of L shaped connecting link A and code-disc mechanism assembly B; And the circumferencial direction of its hollow-core construction is provided with the positioning round orifice that three row are divided equally; And angle between any two is 120 °; The circular hole of opening evenly distributes; The quantity of the circular hole of opening is 3～8 as required, the location and installation hole of circular hole that described three row are divided equally for realizing connecting with code-disc coupling shaft 1, and location and installation hole and bolt head that fastening bolt passes L shaped connecting link A small end hold out against in the locating slot of code-disc coupling shaft 1; Realize that L shaped connecting link A connects with the fastening of code-disc coupling shaft 1, promptly three row are 120 ° fastening bolt in twos and can guarantee that L shaped connecting link A connects with the firm of code-disc coupling shaft 1; The long end of L shaped connecting link A carries installation end and is provided with external thread for the top of wheel speed detector, is used for installing the fast assembly C of testing agency of wheel and connects impact damper D.
Described code-disc mechanism assembly B mainly is made up of code-disc coupling shaft 1, front bearing end cap 2, forward end seal circle 3, bearing 4, code-disc 5, back-end sealing circle 6 and rear bearing end cap 7.Code-disc 5 among the described code-disc mechanism assembly B is connected on the automotive hub through switching device assembly III indirectly, rotates synchronously with automotive hub; Code-disc coupling shaft 1 is installed with the short end coaxial line of L shaped connecting link A among the described code-disc mechanism assembly B; And an end of the fluting of code-disc coupling shaft 1 is sleeved in the L shaped connecting link A hollow tubular, and realizes that through three fastening bolts that are uniformly distributed with of row code-disc coupling shaft 1 connects with L shaped connecting link is fastening.
Described code-disc coupling shaft 1 is made up of long locating slot axle head, the thrust shaft shoulder and short connection axle head; The elongated slot that it is rectangle that the described location axle head of long fluting has three sections in a circumferential direction; And three elongated slots angle between any two is 120 °; This structure matches with the short end of L shaped connecting link A, and the fastening bolt that is 120 ° through three row in twos realizes that L shaped connecting link A connects with the firm of code-disc coupling shaft 1; The described thrust shaft shoulder can just withstand on the inner ring of bearing 4 the thrust shaft shoulder in the diameter of radially circumference and the equal diameters of bearing 4 inner ring outer rims, realizes bearing 4 inner rings location in the axial direction; The described diameter and bearing 4 interference fit of short connection axle head, realization bearing 4 is connected with code-disc coupling shaft 1.
Described front bearing end cap 2 is the hat through-hole structure, and inside has trapezoidal annular groove, cooperates installation with code-disc coupling shaft 1 coaxial line.The head of front bearing end cap 2 is evenly equipped with six threaded holes, realizes and being fixedly connected of code-disc 5 through bolt; The tail end face of front bearing end cap 2 withstands on the cycle surface of bearing 4, realizes the axial location of bearing 4 outer rings.
Described forward end seal circle 3 is elastomeric material and is extruded in the trapezoidal annular groove that is installed in front bearing end cap 2, is sleeved on simultaneously on the axle head of code-disc coupling shaft 1, with code-disc coupling shaft 1 coaxial line, realizes the effect of bearing enclosure.
The axis hole interference fit of described bearing 4 outer rings and code-disc 5 makes bearing 4 and code-disc 5 close-coupled, and the inner ring of bearing 4 and code-disc coupling shaft 1 interference fit make bearing 4 and code-disc coupling shaft 1 close-coupled; This mounting means makes the outer ring of bearing 4 and code-disc in aggregates simultaneously, as the rotating part of wheel speed detector, with wheel; The inner ring of bearing 4 and code-disc coupling shaft 1 are in aggregates, as the fixed part of wheel speed detector.
Described back-end sealing circle 6 is elastomeric material and is extruded in the trapezoidal annular groove that is installed in rear bearing end cap 7, is sleeved on simultaneously on the code-disc coupling shaft 1, with code-disc coupling shaft 1 coaxial line, realizes the effect of bearing enclosure.
Described rear bearing end cap 7 is a hat-shaped structure, and inside has trapezoidal annular groove, cooperates installation with code-disc coupling shaft 1 coaxial line.Its head is an enclosed construction, is evenly equipped with six threaded holes on the periphery, realizes and being fixedly connected of code-disc 5 through bolt; The tail end face of rear bearing end cap 7 withstands on the other end of bearing 4 outer rings, realizes the axial location of bearing.
Described code-disc 5 is provided with a manhole (axis hole) for the center, and radially is provided with the steel construction of the through hole (being location and installation slotted eye b and pulsed test signal hole c) of two ring recess shapes.Described code-disc 5 central shaft hole places vertically, near the one side of front bearing end cap 2 annular boss is set has six threaded holes that are uniformly distributed with, and are connected with front bearing end cap 2 through bolt on the circumferentia of boss; Simultaneously, the another side that code-disc 5 boss are relative has six threaded holes that are uniformly distributed with, and is connected with back front bearing end cap 7 through bolt.
Described code-disc 5 location and installation hole b are by radially forming to 11, No. 5 location and installation holes 12,10, No. 4 location and installation holes, 9, No. 3 location and installation holes, 8, No. 2 location and installation holes, extraradial 6 non-equal angular No. 1 location and installation holes and No. 6 location and installation holes 13.Because dissimilar automobile; The quantity of its lug nut is not quite similar; Common types such as 4,5,6,8,10 or 12 are arranged, and this structure Design can be full of the requirement of code-disc 5 and dissimilar automotive hub location and installation, and handled easily, versatility are good.According to above requirement; Described code-disc 5 location and installation hole b are when design, and No. 1 location and installation hole 8 and No. 2 location and installation holes 9 are 60 °, and No. 2 location and installation holes 9 and No. 3 location and installation holes 10 are 30 °; No. 3 location and installation holes 10 and No. 4 location and installation holes 11 are 90 °; No. 4 location and installation holes 11 and No. 5 location and installation holes 12 are 36 °, and No. 5 location and installation holes 12 and No. 6 location and installation holes 13 are 72 °, and No. 6 location and installation holes 13 and No. 1 location and installation hole 8 are 72 °; Simultaneously; Described location and installation hole b is six measure-alike groove shape through holes, and two terminal circle arc distance code-disc 5 radius centered of installing and locating hole b are in radius R=50 of proximal part; Deep end radius R=150, the spacing that satisfies the automotive hub nut distributes.Confirm the principle on a plane when being connected fixedly with wheel hub code-disc 5, to have 3 location and installation holes to be fixedly connected, at least according to three points to guarantee the stability of code-disc in motion process with wheel hub.When the wheel hub hold-down nut is 4,8 or 12 (i.e. 4 multiple), can use 8, No. 3 location and installation holes 10, No. 1 location and installation hole of being 90 ° in twos and No. 4 location and installation holes 11 to realize being fixedly connected of code-discs 5 and wheel hub; When the wheel hub hold-down nut is 5 or 10 (i.e. 5 multiple), can use 8, No. 5 location and installation holes 12, No. 1 location and installation hole of being 72 ° in twos and No. 6 location and installation holes 13 to realize being fixedly connected of code-discs 5 and wheel hub; When the wheel hub hold-down nut is 6 (i.e. 6 multiple); Can use 8, No. 2 location and installation holes 9, No. 1 location and installation hole and No. 4 location and installation holes 11 to realize be fixedly connected (No. 1 location and installation hole 8 and No. 2 location and installation holes 9 are 60 °, and No. 2 location and installation holes 9 and No. 4 location and installation holes 11 are 120 °) of code-discs 5 and wheel hub.
Groove shape through hole on described code-disc 5 outer rims (being pulsed test signal hole c) is evenly distributed, and the quantity of pulsed test signal hole c is set to 24～48 according to the requirement of measuring accuracy, is the primary structure part that code-disc produces pulse.Hall-type is near the pulse signal hole c of the alignment probe code-disc 5 of switch 14; When code-disc 5 during with wheel; Hall-type just produces pulse signal near switch 14; The pulse signal that is produced near switch 14 according to Hall-type can calculate the rotating speed (being the rotating speed of wheel) of code-disc, according to the radius of tested vehicle tire and then can try to achieve the linear velocity of wheel.
Described take turns the fast assembly C of testing agency mainly by Hall-type near switch 14 and form near switch mount pad 15.Described is L shaped near switch mount pad 15, and two supporting surfaces of L shaped mount pad all have mounting hole, and the long support face of mount pad is through mounting hole, and lower nut is packed on the screw rod of L shaped connecting link A in the employing; Be processed with the threaded hole that matches near switch with Hall-type on the short supporting surface of mount pad, described Hall-type is packed in through being threaded on the short supporting surface of mount pad near switch 14, and through nut and locking plate it is pinned.
Described impact damper D mainly is made up of lower spring cup 16, buffer spring 17 and upper spring seat 18.Described lower spring cup 16 and L shaped connecting link A are through being threaded; Described upper spring seat 18 is fixed together through screw thread with car body fixed mechanism assembly E; The two ends of described buffer spring 17 are packed in the seam of lower spring cup 16 and upper spring seat 18; This structure reduced vehicle in operational process because of vertical vibration impact to the wheel speed detector; Play the effect of protection wheel speed detector, and improved accuracy of detection.
Described lower spring cup 16 is " ten " word structure on front elevation, has fixing structure on disc structure one side end face of mid diameter bigger 3, in order to install buffer spring 17; Long simultaneously end passes buffer spring 17 vertically until the guide pole effect of buffer spring 17 is played in the position, middle and lower part of upper spring seat 18; Short end has internal thread, is fastenedly connected with the external thread on L shaped connecting link A top.
Described upper spring seat 18 is " ⊥ " shape structure, processes internal thread on its top, and is fastenedly connected with the external thread of top fixed mechanism assembly E and becomes one; Upper spring seat 18 provides the effect of the long end guide pipe of lower spring cup 16 simultaneously.
Described top fixed mechanism assembly E mainly is made up of strong magnet backplate 19, strong magnet 20, connection pivot pin 21, movable bearing support 22 and oscillating bearing 23.Strong magnet 20 among the described fixed mechanism assembly E is adsorbed on the car body, realizes that the top of wheel speed detector is fixed.
Described strong magnet backplate 19 is with the channel-section steel structure, be provided with respectively on the both ends of the surface by two threaded holes, through bolt to movable bearing support 22, protection strong magnet 20, the coming off of the strong magnet 20 that prevents to cause because of the vehicle high vibration;
Described movable bearing support 22 is a steel construction, opens by rectangular slot on the rectangular parallelepiped part outer face of movable bearing support 22, is used to install strong magnet 20, and the other end is hinged with oscillating bearing 23 through connecting pivot pin 21.Described oscillating bearing 23 can be swung according to the difference of different tilting of car body angles, makes strong magnet backplate 19 and car body that big as far as possible contact area arranged, and realizes being fastenedly connected of top fixed mechanism assembly E and car body.
Compared with prior art the invention has the beneficial effects as follows:
1. the hall effect type automobile wheel speed pick-up unit that has impact damper of the present invention has been developed the code-disc device of a kind of highly versatile, reliable installation; The relative angle between the location and installation hole on the code-disc and the radiation length of code-disc mounting hole have taken into full account present all types of automobile different kinds of tyre nut quantity and distribution characteristics; Calculate through science; Can be installed on easily on the wheel hub of all kinds of different automobile types, versatility is good.
2. the hall effect type automobile wheel speed pick-up unit that has impact damper of the present invention; Designed and a kind ofly had three and be the code-disc coupling shaft of 120 ° and equally distributed locating slot in twos and have the L shaped connecting link that three row are 120 ° and equally distributed positioning round orifice in twos; Both pilot holes and locating slot connect together through 120 ° the fastening bolt of being in twos of three row circle distribution; Realize firm connection the (promptly connecting) of code-disc and L shaped connecting link with the firm of proximity Hall switch; Simultaneously; The code-disc coupling shaft can be axially flexible in L shaped connecting link, to adapt to the variation of distance between wheel hub center, vertical outer face and the car body vertical outer face, highly versatile.
3. the hall effect type automobile wheel speed pick-up unit that has impact damper of the present invention has designed a kind of snubber assembly; Reduced vehicle in operational process because of vertical vibration impact to the wheel speed detector; Play the effect of protection wheel speed detector, and improved accuracy of detection.
4. the hall effect type automobile wheel speed pick-up unit that has impact damper of the present invention has designed top fixed mechanism assembly, and the suction through strong magnet makes the top of wheel speed detector firmly connect with car body.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is that the hall effect type automobile wheel speed pick-up unit that has impact damper of the present invention is installed in the axonometric projection graph on the wheel hub;
Fig. 2 is the axonometric projection graph that the switching device assembly in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention is installed;
Fig. 3 is the axonometric projection graph of switching swivel nut in the switching device assembly of the present invention;
Fig. 4 is the axonometric projection graph that has the hall effect type automobile wheel speed pick-up unit of impact damper of the present invention;
Fig. 5 is the axonometric projection graph of the L shaped connecting link in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Fig. 6 (a) is that the M-M of L shaped connecting link of the present invention is to cut-open view;
Fig. 6 (b) is the distribution plan of the short end positioning round orifice of L shaped connecting link of the present invention;
Fig. 7 is the axonometric projection graph of the code-disc mechanism assembly in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Fig. 8 is the explosive view of the code-disc mechanism assembly in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Fig. 9 (a) is the forward view of code-disc mechanism assembly of the present invention;
Fig. 9 (b) is that the N-N of code-disc mechanism assembly of the present invention is to view;
Figure 10 is the partial view that Y goes out among Fig. 9 (b);
Figure 11 is the axonometric projection graph of the code-disc coupling shaft in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 12 (a) is that the K-K of code-disc coupling shaft of the present invention is to cut-open view;
Figure 12 (b) is the distribution plan of the locating slot of code-disc coupling shaft of the present invention;
Figure 13 (a) is the axonometric projection graph of the front bearing end cap in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 13 (b) is that the H-H of the front bearing end cap in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention is to view;
Figure 14 (a) is the axonometric projection graph of the rear bearing end cap in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 14 (b) is that the L-L of the rear bearing end cap in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention is to view;
Figure 15 is the axonometric projection graph of the code-disc in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 16 is the distribution plan in the location and installation hole of the code-disc in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 17 is the axonometric projection graph of the wheel speed testing agency assembly in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 18 is the axonometric projection graph of the buffer spring in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 19 is the explosive view of the impact damper of the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 20 be in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention impact damper along J-J to cut-open view;
Figure 21 (a) is the axonometric projection graph of the lower springs seat in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 21 (b) is the lower springs seat cut-open view vertically in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 22 (a) is the axonometric projection graph of the upper springs seat in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 22 (b) is the upper springs seat cut-open view vertically in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 23 is the axonometric projection graph of the car body fixed mechanism assembly in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Figure 24 is the explosive view of the car body fixed mechanism assembly in the hall effect type automobile wheel speed pick-up unit that has an impact damper of the present invention;
Among the figure: I. is tried vehicle, and II. has the hall effect type automobile wheel speed pick-up unit of impact damper, III. switching device assembly;
A.L shape connecting link, B. code-disc mechanism assembly, C. are taken turns fast testing agency assembly, D. impact damper, E. top fixed mechanism assembly;
A. the swivel nut of transferring, b. location and installation hole, c. pulse signal hole;
1. code-disc coupling shaft, 2. front bearing end cap, 3. forward end seal circle, 4 bearings, 5. code-disc; 6. back-end sealing circle, 7. rear bearing end cap, No. 8.1 location and installation holes, No. 9.2 location and installation holes, No. 10.3 location and installation holes; 11.4 number location and installation hole, No. 12.5 location and installation holes, No. 13.6 location and installation holes, 14. Hall-types are near switch, and 15 near the switch mount pad; 16. lower spring cup, 17. buffer springs, 18. upper spring seats, 19. strong magnet backplates; 20. strong magnet, 21. connect pivot pin, 22. movable bearing supports, 23. oscillating bearings.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1-4, the described hall effect type automobile wheel speed pick-up unit that has impact damper mainly is made up of L shaped connecting link A, code-disc mechanism assembly B, the fast assembly C of testing agency of wheel, impact damper D and top fixed mechanism assembly E.The described hall effect type automobile wheel speed pick-up unit bottom that has impact damper is fixedly mounted on its code-disc mechanism assembly B by on the wheel hub of examination vehicle I through switching device assembly III and nut, realizes the run-in synchronism of code-disc 5 and wheel; Strong magnet 13 among the described top fixed mechanism assembly E is adsorbed on the car body, realizes that the top of wheel speed detector is fixed.
Consult Fig. 1-3; Described switching device assembly III is made up of the identical switching swivel nut a of rolling hitch structure; Described switching swivel nut a is a hat-shaped structure, and the head of hat-shaped structure is a hollow hexahedron structure that has internal thread, and the afterbody of hat-shaped structure is one to have externally threaded screw rod.Transfer when installing will taking turns speed detector and automotive hub; According to 3 principles of confirming a plane; Three the original hold-down nuts above the wheel hub of dismantling; The bolt of the internal thread of hat-shaped structure head and three nuts of dismantling is tightened successively (promptly the hat-shaped structure head of this moment serves as the effect of wheel hub hold-down nut, and its hollow degree of depth is greater than the length that institute's snapping bolt of wanting protrudes in the axial direction), the afterbody screw rod of hat-shaped structure passes takes turns the installation axle hole b on the code-disc 5 in the speed detector; And by three cover nuts and pads code-disc is fastened on the automotive hub, realize that the bottom of wheel speed detector is fixed.The dimensions fibrous root of described switching swivel nut a is decided according to the size of tested vehicle I boss bolt.
Consult Fig. 5-6 (b); Described L shaped connecting link A is a L shaped tubular structure; Its long end is for be staircase structure with two kinds of different-diameters vertically; Diameter near the short end of L shaped connecting rod A is bigger, and is less away from the diameter of the short end of L shaped connecting rod A, penetrates connecting rod arrival fixed position so that take turns the clamp nut of the fast assembly C of testing agency.Top and axle journal change location at long end are provided with binding thread; Screw top is connected with the internal thread of lower spring cup 16; Make L shaped connecting link A and impact damper D be connected to an integral body, the threaded engagement of axle journal change location is fixed taking turns the fast assembly C of testing agency with the clamp nut of taking turns the fast assembly C of testing agency; Short end is the link of L shaped connecting link A and code-disc mechanism assembly B; And the circumferencial direction of its hollow-core construction is provided with the positioning round orifice that three row are divided equally; And angle between any two is 120 °; The circular hole of opening evenly distributes; The quantity of the circular hole of opening is 3～8 as required, the location and installation hole of circular hole that described three row are divided equally for realizing connecting with code-disc coupling shaft 1, and location and installation hole and bolt head that fastening bolt passes L shaped connecting link A small end hold out against in the locating slot of code-disc coupling shaft 1; Realize that L shaped connecting link A connects with the fastening of code-disc coupling shaft 1, promptly three row are 120 ° fastening bolt in twos and can guarantee that L shaped connecting link A connects with the firm of code-disc coupling shaft 1; The long end of L shaped connecting link A carries installation end and is provided with external thread for the top of wheel speed detector, is used for installing the fast assembly C of testing agency of wheel and connects impact damper D.
Consult Fig. 7-10, described code-disc mechanism assembly B mainly is made up of code-disc coupling shaft 1, front bearing end cap 2, forward end seal circle 3, bearing 4, code-disc 5, back-end sealing circle 6 and rear bearing end cap 7.Code-disc 5 among the described code-disc mechanism assembly B is connected on the automotive hub through switching device assembly III, rotates synchronously with automotive hub; Code-disc coupling shaft 1 is installed with the short end of L shaped connecting link A coaxial line among the described code-disc mechanism assembly B; And an end of the fluting of code-disc coupling shaft 1 is sleeved in the L shaped connecting link A hollow tubular, and realizes that through three fastening bolts that are uniformly distributed with of row code-disc coupling shaft 1 connects with L shaped connecting link is fastening.
Consult Fig. 8-10, described forward end seal circle 3 is elastomeric material and is extruded in the trapezoidal annular groove that is installed in front bearing end cap 2, is sleeved on simultaneously on the axle head of code-disc coupling shaft 1, with code-disc coupling shaft 1 coaxial line, realizes the effect of bearing enclosure.The axis hole interference fit of described bearing 4 outer rings and code-disc 5 makes bearing 4 and code-disc 5 close-coupled, and the inner ring of bearing 4 and code-disc coupling shaft 1 interference fit make bearing 4 and code-disc coupling shaft 1 close-coupled; This mounting means makes the outer ring of bearing 4 and code-disc in aggregates simultaneously, as the rotating part of wheel speed detector, with wheel; The inner ring of bearing 4 and code-disc coupling shaft 1 are in aggregates, as the fixed part of wheel speed detector.Described back-end sealing circle 6 is elastomeric material and is extruded in the trapezoidal annular groove that is installed in rear bearing end cap 7, is sleeved on simultaneously on the code-disc coupling shaft 1, with code-disc coupling shaft 1 coaxial line, realizes the effect of bearing enclosure.
Consult Figure 11-12 (b); Described code-disc coupling shaft 1 is made up of long locating slot axle head, the thrust shaft shoulder and short connection axle head; The elongated slot that it is rectangle that the described location axle head of long fluting has three sections in a circumferential direction; And three elongated slots angle between any two is 120 °, and this structure matches with the short end of L shaped connecting link A, and the fastening bolt that is 120 ° through three row in twos realizes that L shaped connecting link A connects with the firm of code-disc coupling shaft 1; The described thrust shaft shoulder can just withstand on the inner ring of bearing 4 the thrust shaft shoulder in the diameter of radially circumference and the equal diameters of bearing 4 inner ring outer rims, realizes bearing 4 inner rings location in the axial direction; The described diameter and bearing 4 interference fit of short connection axle head, realization bearing 4 is connected with code-disc coupling shaft 1.
Consult Figure 13 (a), Figure 13 (b), described front bearing end cap 2 is the hat through-hole structure, and inside has trapezoidal annular groove, cooperates installation with code-disc coupling shaft 1 coaxial line.The head of front bearing end cap 2 is evenly equipped with six threaded holes, realizes and being fixedly connected of code-disc 5 through bolt; The tail end face of front bearing end cap 2 withstands on the cycle surface of bearing 4, realizes the axial location of bearing 4 outer rings.
Consult Figure 14 (a), Figure 14 (b), described rear bearing end cap 7 is a hat-shaped structure, and inside has trapezoidal annular groove, cooperates installation with code-disc coupling shaft 1 coaxial line.Its head is an enclosed construction, is evenly equipped with six threaded holes on the periphery, realizes and being fixedly connected of code-disc 5 through bolt; The tail end face of rear bearing end cap 7 withstands on the other end of bearing 4 outer rings, realizes the axial location of bearing.
Consult Figure 15, described code-disc 5 is provided with a manhole (axis hole) for the center, and radially is provided with the steel construction of the through hole (being location and installation slotted eye b and pulsed test signal hole c) of two ring recess shapes.Described code-disc 5 central shaft hole places vertically, near the one side of front bearing end cap 2 annular boss is set has six threaded holes that are uniformly distributed with, and are connected with front bearing end cap 2 through bolt on the circumferentia of boss; Simultaneously, the another side that code-disc 5 boss are relative has six threaded holes that are uniformly distributed with, and is connected with back front bearing end cap 7 through bolt.
Consult Figure 16, described code-disc 5 location and installation hole b are by radially forming to extraradial 6 non-equal angular location and installation holes 8,9,10,11,12,13.Because dissimilar automobile; The quantity of its lug nut is not quite similar; Common types such as 4,5,6,8,10 or 12 are arranged, and this structure Design can satisfy the requirement of code-disc 5 and dissimilar automotive hub location and installation, and handled easily, versatility are good.According to above requirement; Described code-disc 5 location and installation hole b are by radially forming to 11, No. 5 location and installation holes 12,10, No. 4 location and installation holes, 9, No. 3 location and installation holes, 8, No. 2 location and installation holes, extraradial 6 non-equal angular No. 1 location and installation holes and No. 6 location and installation holes 13.Because dissimilar automobile; The quantity of its lug nut is not quite similar; Common types such as 4,5,6,8,10 or 12 are arranged, and this structure Design can satisfy the requirement of code-disc 5 and dissimilar automotive hub location and installation, and handled easily, versatility are good.According to above requirement; Described code-disc 5 location and installation hole b are when design, and No. 1 location and installation hole 8 and No. 2 location and installation holes 9 are 60 °, and No. 2 location and installation holes 9 and No. 3 location and installation holes 10 are 30 °; No. 3 location and installation holes 10 and No. 4 location and installation holes 11 are 90 °; No. 4 location and installation holes 11 and No. 5 location and installation holes 12 are 36 °, and No. 5 location and installation holes 12 and No. 6 location and installation holes 13 are 72 °, and No. 6 location and installation holes 13 and No. 1 location and installation hole 8 are 72 °; Simultaneously, described location and installation hole b is six measure-alike groove shape through holes, two terminal circle arc distance code-disc 5 radius centered of installing and locating hole b, and in radius R=50 of proximal part, deep end radius R=150, the spacing that satisfies the automotive hub nut distributes.Confirm the principle on a plane when being connected fixedly with wheel hub code-disc 5, to have 3 location and installation holes to be fixedly connected, at least according to three points to guarantee the stability of code-disc in motion process with wheel hub.When the wheel hub hold-down nut is 4,8 or 12 (i.e. 4 multiple), can use 8, No. 3 location and installation holes 10, No. 1 location and installation hole of being 90 ° in twos and No. 4 location and installation holes 11 to realize being fixedly connected of code-discs 5 and wheel hub; When the wheel hub hold-down nut is 5 or 10 (i.e. 5 multiple), can use 8, No. 5 location and installation holes 12, No. 1 location and installation hole of being 72 ° in twos and No. 6 location and installation holes 13 to realize being fixedly connected of code-discs 5 and wheel hub; When the wheel hub hold-down nut is 6 (i.e. 6 multiple); Can use 8, No. 2 location and installation holes 9, No. 1 location and installation hole and No. 4 location and installation holes 11 to realize be fixedly connected (No. 1 location and installation hole 8 and No. 2 location and installation holes 9 are 60 °, and No. 2 location and installation holes 9 and No. 4 location and installation holes 11 are 120 °) of code-discs 5 and wheel hub.
Groove shape through hole on described code-disc 5 outer rims (being pulsed test signal hole c) is evenly distributed, and the quantity of pulsed test signal hole c is set to 48～72 according to the requirement of measuring accuracy, is the primary structure part that code-disc produces pulse.Hall-type is near the pulse signal hole c of the alignment probe code-disc 5 of switch 14; When code-disc 5 during with wheel; Hall-type just produces pulse signal near switch 14; The pulse signal that is produced near switch 14 according to Hall-type can calculate the rotating speed (being the rotating speed of wheel) of code-disc, according to the radius of tested vehicle tire and then can try to achieve the linear velocity of wheel.
Consult Figure 17, described take turns the fast assembly C of testing agency mainly by Hall-type near switch 14 and form near switch mount pad 15.Described is L shaped near switch mount pad 15, and two supporting surfaces of L shaped mount pad all have mounting hole, and the long support face of mount pad is through mounting hole, and lower nut is packed on the screw rod of connecting link A in the employing; Be processed with the threaded hole that matches near switch with Hall-type on the short supporting surface of mount pad, described Hall-type is packed in through being threaded on the short supporting surface of mount pad near switch 14, and through nut and locking plate it is pinned.
Consult Figure 18-22, described impact damper D mainly is made up of lower spring cup 16, buffer spring 17 and upper spring seat 18.Described lower spring cup 16 and L shaped connecting link A are through being threaded; Described upper spring seat 18 is fixed together through screw thread with car body fixed mechanism assembly E; The two ends of described buffer spring 17 are packed in the seam of lower spring cup 16 and upper spring seat 18; This structure reduced vehicle in operational process because of vertical vibration impact to the wheel speed detector; Play the effect of protection wheel speed detector, and improved accuracy of detection.
Described lower spring cup 16 is " ten " word structure on front elevation, and mid diameter has seam on bigger disk one side end face, is used to install buffer spring 17; A simultaneously long end passes buffer spring 17 vertically until the position, middle and lower part of upper spring seat 18, play buffer spring 17 the guide pole effect; Short end has internal thread, is fastenedly connected with the external thread on L shaped connecting link A top.Described upper spring seat 18 is " ⊥ " shape structure, has internal thread on its top, and is fastenedly connected with the external thread of top fixed mechanism assembly E and becomes one; Upper spring seat 18 provides the effect of the long end guide pipe of lower spring cup 16 simultaneously.
Consult Figure 23,24, described top fixed mechanism assembly E mainly is made up of strong magnet backplate 19, strong magnet 20, connection pivot pin 21, movable bearing support 22 and oscillating bearing 23.Strong magnet 20 among the described fixed mechanism assembly E is adsorbed on the car body, realizes that the top of wheel speed detector is fixed.Described strong magnet backplate 19 is with the channel-section steel structure, be provided with respectively on the both ends of the surface by two threaded holes, through bolt to movable bearing support 22, protection strong magnet 20, the coming off of the strong magnet 20 that prevents to cause because of the vehicle high vibration; Described movable bearing support 22 is a steel construction, opens by rectangular slot on the rectangular parallelepiped part outer face of movable bearing support 22, is used to install strong magnet 20, and the other end is hinged with oscillating bearing 23 through connecting pivot pin 21.Described oscillating bearing 23 can be swung according to the difference of different tilting of car body angles, makes strong magnet backplate 19 and car body that big as far as possible contact area arranged, and realizes being fastenedly connected of top fixed mechanism assembly E and car body.
Claims (10)
1. hall effect type automobile wheel speed pick-up unit that has impact damper; Comprise L shaped connecting link (A), code-disc mechanism assembly (B), wheel fast testing agency assembly (C), impact damper (D) and top fixed mechanism assembly (E); It is characterized in that; Said L shaped connecting link (A) is a L shaped tubular structure; Its long end is for being staircase structure with two kinds of different-diameters vertically, and is bigger near the diameter of the short end of L shaped connecting rod A, less away from the diameter of the short end of L shaped connecting rod A; Said code-disc mechanism assembly (B) is made up of code-disc coupling shaft (1) and code-disc (5); Said code-disc (5) is connected with the lower end of L shaped connecting link (A) through code-disc coupling shaft (1), and code-disc mechanism assembly (B) is fixedly mounted on the wheel hub of tested vehicle (I) through switching device assembly (III) and nut, and the said fast testing agency assembly (C) of taking turns is made up of near switch (14) with near switch mount pad (15) Hall-type; Said Hall-type is threaded through the threaded rod lower end of nearly switch mount pad (15) with L shaped connecting link (A) near switch (14); Hall-type is near the pulse signal hole (c) of the alignment probe code-disc (5) of switch (14), and said impact damper (D) is contained in the threaded rod upper end of L shaped connecting link (A), and is fixedly mounted on the car body through top fixed mechanism assembly (E).
2. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 1; It is characterized in that said switching device assembly (III) is made up of the identical switching piece (a) of rolling hitch structure, said switching piece (a) is a T shape structure; Big end is a hollow hexahedron structure that has internal thread; Be used for wheel hub on bolt be connected, small end is one to have externally threaded screw rod, this screw rod is fixedly connected with code-disc mechanism assembly (B) screw thread; The dimensions of described switching piece (a) is decided according to the size of tested vehicle (I) boss bolt.
3. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 1; It is characterized in that; Short end in the said L shaped connecting link (A) is the link of L shaped connecting link (A) with code-disc mechanism assembly (B); Its circumferencial direction is provided with the positioning round orifice that three row are divided equally; And the angle between the two row positioning round orifice is 120 °, and every row positioning round orifice quantity is 3～8, three corresponding locating slots of positioning round orifice that the code-disc coupling shaft (1) in the said code-disc mechanism assembly (B) is provided with L shaped connecting link (A) is short to be held; The short end of code-disc coupling shaft (1) and L shaped connecting link (A) suit, and pass fastening connection of locating slot on said positioning round orifice and the code-disc coupling shaft (1) through fastening bolt; The long end of said L shaped connecting link (A) is used for wheel fast testing agency assembly (C) being installed and being connected impact damper (D) for carrying installation end and being provided with external thread.
4. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 1; It is characterized in that; Code-disc coupling shaft (1) in the said code-disc mechanism assembly (B) is installed in code-disc (5) the central circular through hole through front and back bearings end cap (2,7) and bearing (4); Code-disc coupling shaft (1) is by locating slot axle head, the thrust shaft shoulder and be connected axle head and form, and the locating slot section on the said locating slot axle head is the rectangle elongated slot, and said bearing (4) outer ring is connected with the central circular through hole interference fit of code-disc (5); Round end as the wheel speed detector rotates with code-disc (5); Bearing (4) inner ring is connected with code-disc coupling shaft (1) interference fit, as the stiff end of wheel speed detector.
5. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 4; It is characterized in that; Said front and back bearings end cap (2,7) is a T shape through-hole structure; The centre is provided with the trapezoidal annular groove that front and back sealing rings (3,6) is installed, and is evenly equipped with threaded hole on the large end face of front and back bearings end cap (2,7), is fixedly connected with code-disc (5) through bolt; The small end face of front and back bearings end cap (2,7) withstands on the side, outer ring, front and back of bearing (4), and to bearing (4) outer ring axial location, the large end face of rear bearing end cap (7) is an enclosed construction.
6. according to each described hall effect type automobile wheel speed pick-up unit that has impact damper of claim 1 to 4; It is characterized in that; Radially be provided with the through hole of two ring recess shapes on the said code-disc (5), inner ring is location and installation hole (b), and the outer ring is pulse signal hole (c); The central circular through hole place of said code-disc (5) leading flank is provided with an annular boss; Raised head face is provided with the threaded hole that is uniformly distributed with, and the threaded hole on the large end face of this threaded hole and front bearing end cap (2) is corresponding, and is connected with front bearing end cap (2) through bolt; Code-disc (5) trailing flank and boss corresponding section also are provided with threaded hole, and are connected with rear bearing end cap (7) through bolt.
7. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 6; It is characterized in that; Location and installation hole (b) on the said code-disc (5) radially is uneven distribution by code-disc (5); Form by No. 1 location and installation hole (8), No. 2 location and installation holes (9), No. 3 location and installation holes (10), No. 4 location and installation holes (11), No. 5 location and installation holes (12) and No. 6 location and installation holes (13); Said location and installation hole (b) is certain angle distribution in twos: No. 1 location and installation hole (8) is 60 ° with No. 2 location and installation holes (9); No. 2 location and installation holes (9) are 30 ° with No. 3 location and installation holes (10), and No. 3 location and installation holes (10) are 90 ° with No. 4 location and installation holes (11), and No. 4 location and installation holes (11) are 36 ° with No. 5 location and installation holes (12); No. 5 location and installation holes (12) are 72 ° with No. 6 location and installation holes (13), and No. 6 location and installation holes (13) are 72 ° with No. 1 location and installation hole (8); The end face in said location and installation hole (b) is circular-arc; And each location and installation hole (b) structure and measure-alike; End face center of arc to code-disc (5) radius centered in installing and locating hole (b) is at the radius R=50mm of proximal part; A deep end radius R=150mm, and the spacing that satisfies the automotive hub nut distributes.
8. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 6; It is characterized in that; Pulse signal hole (c) on the said code-disc (5) radially is evenly distributed by code-disc (5); When code-disc (5) during with wheel, be installed near the Hall-type on the switch mount pad (15) and just produce pulse signal near switch (14), the pulse signal that is produced near switch (14) according to Hall-type calculates the rotating speed of code-disc; Be the rotating speed of wheel, according to the radius of tested vehicle tire and then try to achieve the linear velocity of wheel;
Said is a L shaped bent plate near switch mount pad (15), and the long end and the short end of bent plate are provided with a threaded hole respectively, and long end threaded hole is connected with the screw flight of L shaped connecting link (A), and through about two nuts fix; Described Hall-type is threaded near the threaded hole of switch (14) with the short end of bent plate, and fixes through the nut and the locking plate of both sides.
9. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 1; It is characterized in that; Described impact damper (D) is made up of two cover 1, No. 2 spring contiguous block (16,18) and buffering spring (17); Said 1, No. 2 spring contiguous block (16,18) is a circular ring structure; Its outside surface is provided with the helicla flute that is connected with buffer spring (17) two ends respectively, and the inside of 1, No. 2 spring contiguous block (16,18) is threaded hole, is threaded with the threaded rod of the oscillating bearing (23) of the threaded rod of L shaped connecting link (A) and top fixed mechanism assembly (E) respectively.
10. the hall effect type automobile wheel speed pick-up unit that has impact damper according to claim 1; It is characterized in that; Described top fixed mechanism assembly (E) is made up of strong magnet backplate (19), strong magnet (20), connection pivot pin (21), movable bearing support (22) and oscillating bearing (23); Have the rectangular slot that strong magnet (20) is installed on said movable bearing support (22) outer face; Strong magnet (20) is fixed by bolts in the movable bearing support (22) by strong magnet backplate (19), and strong magnet (20) is adsorbed on the car body through strong magnet backplate (19), and the other end of movable bearing support (22) is hinged with oscillating bearing (23) through connecting pivot pin (21); Said oscillating bearing (23) is swung according to the difference of different tilting of car body angles, makes strong magnet backplate (19) reliably contact with car body.
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| CN201210188635.XA CN102721825B (en) | 2012-06-10 | 2012-06-10 | Hall effect type automobile wheel speed detecting device with buffer |
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| CN201210188635.XA CN102721825B (en) | 2012-06-10 | 2012-06-10 | Hall effect type automobile wheel speed detecting device with buffer |
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| CN103604941A (en) * | 2013-11-27 | 2014-02-26 | 奇瑞汽车股份有限公司 | Device for testing rotating speed of vehicle wheel |
| CN104374945A (en) * | 2014-11-07 | 2015-02-25 | 上海交通大学 | Vehicle speed measurement device and method |
| CN104407614A (en) * | 2014-10-23 | 2015-03-11 | 河北工业大学 | Four-wheel type indoor mobile robot |
| CN106248376A (en) * | 2016-10-12 | 2016-12-21 | 北京汽车研究总院有限公司 | A kind of power transmission shaft twisting vibration detecting system and detection method |
| CN108982903A (en) * | 2018-07-20 | 2018-12-11 | 长安大学 | A kind of speed measuring device and speed-measuring method improving paver spreading quality |
| CN109801504A (en) * | 2019-03-20 | 2019-05-24 | 苏州真趣信息科技有限公司 | Vehicle speed measuring system and method |
| DE102018100086B4 (en) | 2017-01-05 | 2021-12-23 | GM Global Technology Operations LLC | SYSTEMS FOR OBSERVING A ROTATION OF A WHEEL |
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| CN102721825B (en) | 2014-01-01 |
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