CN102721825B - 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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- CN102721825B CN102721825B CN201210188635.XA CN201210188635A CN102721825B CN 102721825 B CN102721825 B CN 102721825B CN 201210188635 A CN201210188635 A CN 201210188635A CN 102721825 B CN102721825 B CN 102721825B
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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 automobile wheel speed of the hall effect type with impact damper pick-up unit.
Background technology
When vehicle carries out actual road test, wheel speed is one of important test parameter, significant for the evaluation of vehicle performance.Independently the wheel speed proving installation is had a try while testing carrying out road at present, have that versatility is poor, be subject to the shortcomings such as ectocine is large in test, and overseas equipment is expensive, and these are all restricting the test of wheel speed 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 wheel hub with vehicle wheel rotation, use electromagnetic induction principle, utilize the magnetic flux checker of gear ring tooth root, gear tip clearance in rotation process to cause the variation of induction electromotive force, and then record 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 low speed of a motor vehicle operating mode; And its while 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, uses the tally function of optoelectronic switch, is equipped with the gear ring inductive disks and measures tire rotational speed.But the optoelectronic switch in the method is subject to the impact of external light source, the result that 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 by the claw type chuck on the lateral surface of hub nut with vehicle wheel rotation, the wheel speed sensors shell connects with vehicle body, and the relative motion by rotor sensor and stator measures vehicle wheel rotational speed indirectly.But in the method, can't guarantee the pretightning force between claw type chuck and hub nut, easily 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.
The realistic problem detected for wheel speed, the invention discloses a kind of automobile wheel speed of the hall effect type with impact damper pick-up unit, realized the fast detecting of wheel speed.In this device development and Design there is the code-disc structure of non-equal angles radiation mounting hole, can be arranged on 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, with Hall switch, coordinates, and has realized the direct measurement of wheel speed; In device, vertical buffer gear has been eliminated the impact of vertical vibration on the wheel speed test result in the vehicle operating process, and cost is low, 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 automobile wheel speed of the hall effect type with impact damper pick-up unit is provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize:
The described automobile wheel speed of the hall effect type with impact damper pick-up unit, mainly be comprised of L shaped connecting link A, code-disc mechanism assembly B, the assembly C of wheel speed testing agency, impact damper D and top fixed mechanism assembly E.The described automobile wheel speed of the hall effect type with impact damper pick-up unit bottom is fixedly mounted on its code-disc mechanism assembly B on the wheel hub of tested vehicle I by switching device assembly III and nut, realizes the run-in synchronism of code-disc 5 and wheel; Strong magnet 13 in described top fixed mechanism assembly E is adsorbed on car body, realizes that the top of wheel speed detector is fixed.
The switching swivel nut a that described switching device assembly III is identical by the rolling hitch structure forms, and described switching swivel nut a is T shape structure, and the large end of T shape structure is a hollow structure of the hexahedron with internal thread, and the small end of T shape structure is one with externally threaded screw rod.Transfer while installing will take turns speed detector and automotive hub, according to 3 principles of determining a plane, three the original hold-down nuts above wheel hub of dismantling, the bolt of the internal thread of the large end of T shape structure and three nuts of dismantling is tightened successively to (the large end of T shape structure now serves as the effect of wheel hub hold-down nut, and its hollow degree of depth is greater than the length that wanted snapping bolt protrudes in the axial direction), the screw rod of T shape structure small end is through suitable installation groove b on code-disc 5 in the wheel speed detector, and by three cover nuts and pad, code-disc is fastened on automotive hub, the bottom of realization wheel speed detector is fixed.The dimensions fibrous root of described switching swivel nut a is determined 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 being staircase structure with two kinds of different-diameters vertically, diameter near L shaped connecting rod A short end is larger, diameter away from L shaped connecting rod A short end is less, so that the clamp nut of the assembly C of wheel speed testing agency penetrates connecting rod, arrives fixed position.Top and axle journal change location in 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 the assembly C of wheel speed testing agency with the clamp nut of the assembly C of wheel speed testing agency, the link that short end is L shaped connecting link A and code-disc mechanism assembly B, and be provided with the positioning round orifice that three row are divided equally on the circumferencial direction of its hollow-core construction, and angle between any two is 120 °, the circular hole of opening is uniformly distributed, the quantity of the circular hole of opening is 3～8 as required, the circular hole that described three row are divided equally is for realizing the location and installation hole connected with code-disc coupling shaft 1, fastening bolt holds out against in the locating slot of code-disc coupling shaft 1 through location and installation hole and the bolt head of L shaped connecting link A small end, realize the tight joint of L shaped connecting link A and code-disc coupling shaft 1, three row are in twos the fastening bolt of 120 ° and can guarantee that L shaped connecting link A connects with the firm of code-disc coupling shaft 1, the top carrying installation end that the long end of L shaped connecting link A is the wheel speed detector also is provided with external thread, for the assembly C of wheel speed testing agency being installed and connecting impact damper D.
Described code-disc mechanism assembly B mainly is comprised 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 in described code-disc mechanism assembly B is connected on automotive hub indirectly by switching device assembly III, with the automotive hub synchronous rotary; In described code-disc mechanism assembly B, code-disc coupling shaft 1 is installed with the shorter end coaxial line of L shaped connecting link A, and an end of the fluting of code-disc coupling shaft 1 is sleeved in L shaped connecting link A hollow tubular, and uniform fastening bolt is realized code-disc coupling shaft 1 and L shaped connecting link tight joint by three row.
Described code-disc coupling shaft 1 is comprised of longer locating slot axle head, the thrust shaft shoulder and shorter connection axle head, the location axle head of described longer fluting has the elongated slot that three sections are rectangle in a circumferential direction, and three elongated slots angle between any two is 120 °, this structure matches with the shorter end of L shaped connecting link A, and the fastening bolt that is in twos 120 ° by three row realizes that L shaped connecting link A connects with the firm of code-disc coupling shaft 1; The described thrust shaft shoulder, in the diameter of circumference radially and the equal diameters of bearing 4 inner ring outer rims, can just withstand on the inner ring of bearing 4 the thrust shaft shoulder, realizes bearing 4 inner rings location in the axial direction; Diameter and bearing 4 interference fit of described shorter connection axle head, realize being connected of bearing 4 and code-disc coupling shaft 1.
Described front bearing end cap 2 is the hat through-hole structure, and inside has trapezoidal annular groove, with code-disc coupling shaft 1 coaxial line, coordinates installation.The head of front bearing end cap 2 is evenly equipped with six threaded holes, by bolt, realizes and being fixedly connected with of code-disc 5; 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 arranged on front bearing end cap 2, is sleeved on the axle head of code-disc coupling shaft 1 simultaneously, 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, make 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; Simultaneously this mounting means make the outer ring of bearing 4 and code-disc in aggregates, as the wheel speed detector rotating part, with vehicle wheel rotation; 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 arranged on rear bearing end cap 7, is sleeved on code-disc coupling shaft 1 simultaneously, 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, with code-disc coupling shaft 1 coaxial line, coordinates installation.Its head is enclosed construction, is evenly equipped with six threaded holes on periphery, by bolt, realizes and being fixedly connected with of code-disc 5; 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.
Be provided with a manhole (axis hole) centered by described code-disc 5, and radially be 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, an annular boss is set, has six uniform threaded holes, and are connected with front bearing end cap 2 by bolt on the circumferentia of boss; Simultaneously, the another side that code-disc 5 boss are relative has six uniform threaded holes, and is connected with rear front bearing end cap 7 by bolt.
Described code-disc 5 location and installation hole b, by radially forming to extraradial location and installation hole 12, No. 11,5, location and installation hole, No. 10,4, location and installation hole, No. 9,3,8, No. 2 location and installation holes, 6 non-equal angular No. 1 location and installation holes and No. 6 location and installation holes 13.Due to dissimilar automobile, the quantity of its lug nut is not quite similar, the common types such as 4,5,6,8,10 or 12 are arranged, and the design of this structure can meet 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, No. 1 location and installation hole 8 and No. 2 location and installation holes 9 are 60 °, 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, the radius at two terminal circle arc distance code-disc 5 centers of mounting-positioning holes b, and in the radius R of proximal part=50, a deep end radius R=150, the spacing that meets wheel hub nuts distributes.Determine the principle on a plane according to three points, when code-disc 5 and wheel hub are connected and fixed, have at least 3 location and installation holes to be fixedly connected with wheel hub, to guarantee the stability of code-disc in motion process.When the wheel hub hold-down nut is 4,8 or 12 (i.e. 4 multiple), can use the location and installation hole 10, No. 8,3, No. 1 location and installation hole that is in twos 90 ° and No. 4 location and installation holes 11 to realize being fixedly connected with of code-disc 5 and wheel hub; When the wheel hub hold-down nut is 5 or 10 (i.e. 5 multiple), can use the location and installation hole 12, No. 8,5, No. 1 location and installation hole that is in twos 72 ° and No. 6 location and installation holes 13 to realize being fixedly connected with of code-disc 5 and wheel hub; When the wheel hub hold-down nut is 6 (i.e. 6 multiple), can use No. 1 location and installation hole 9, No. 8,2, location and installation hole and No. 4 location and installation holes 11 to realize be fixedly connected with (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-disc 5 and wheel hub.
Groove shape through hole on described code-disc 5 outer rims (being pulsed test signal hole c), be 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.The pulse signal hole c of the alignment probe code-disc 5 of Hall-type approach switch 14, when code-disc 5 during with vehicle wheel rotation, Hall-type approach switch 14 just produces pulse signal, the pulse signal produced according to Hall-type approach switch 14 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.
The described wheel speed assembly C of testing agency mainly is comprised of Hall-type approach switch 14 and approach switch mount pad 15.Described approach switch mount pad 15 is L shaped, and two supporting surfaces of L shaped mount pad all have mounting hole, and the long support face of mount pad is by mounting hole, and in employing, lower nut is packed on the screw rod of L shaped connecting link A; Be processed with the threaded hole matched with the Hall-type approach switch on the short supporting surface of mount pad, described Hall-type approach switch 14 is threaded connection on the short supporting surface that is packed in mount pad, and by nut and locking plate, it is pinned.
Described impact damper D mainly is comprised of lower spring cup 16, buffer spring 17 and upper spring seat 18.Described lower spring cup 16 is threaded connection with L shaped connecting link A; Described upper spring seat 18 is fixed together by 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 the 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 larger 3, in order to be fixedly mounted with buffer spring 17; Long 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 simultaneously; A shorter end has internal thread, with the external thread on L shaped connecting link A top, is fastenedly connected.
Described upper spring seat 18 is " ⊥ " shape structure, on its top, processes internal thread, and is fastenedly connected and becomes one with the external thread of top fixed mechanism assembly E; Upper spring seat 18 provides the effect of lower spring cup 16 than the long end guide pipe simultaneously.
Described top fixed mechanism assembly E mainly is comprised of strong magnet backplate 19, strong magnet 20, connection pivot pin 21, movable bearing support 22 and oscillating bearing 23.Strong magnet 20 in described fixed mechanism assembly E is adsorbed on car body, realizes that the top of wheel speed detector is fixed.
Described strong magnet backplate 19 is with the channel-section steel structure, on both ends of the surface, arranges respectively by two threaded holes, is bolted on movable bearing support 22, and protection strong magnet 20, prevent coming off of the strong magnet 20 that causes because of the vehicle high vibration;
Described movable bearing support 22 is steel construction, on the rectangular parallelepiped part outer face of movable bearing support 22, opens by rectangular slot, and for strong magnet 20 is installed, the other end is hinged with oscillating bearing 23 by 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 large as far as possible contact area be 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 automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention has been developed a kind of highly versatile, reliable code disc device has been installed, relative angle between location and installation hole on code-disc and the radiation length of code-disc mounting hole have taken into full account current all types of automobile different kinds of tyre nut quantity and distribution characteristics, through science, calculate, can be installed on easily on the wheel hub of all kinds of different automobile types, versatility is good.
2. the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention, designed a kind of with three code-disc coupling shafts that are in twos 120 ° and equally distributed locating slot and be in twos the L shaped connecting link of 120 ° and equally distributed positioning round orifice with three row, both pilot holes and locating slot connect together by the fastening bolt of 120 ° of being in twos of three row circle distribution, realize firm connection the (connecting with the firm of proximity Hall switch) of code-disc and L shaped connecting link, 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 car body vertical outer face, highly versatile.
3. the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention has designed a kind of snubber assembly; reduced vehicle in operational process because of the vertical vibration impact to the wheel speed detector; play the effect of protection wheel speed detector, and improved accuracy of detection.
4. the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention has designed top fixed mechanism assembly, and the suction by strong magnet makes the top of taking turns speed detector firmly connect with car body.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is that the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention is arranged on the axonometric projection graph on wheel hub;
Fig. 2 is the axonometric projection graph that the switching device assembly in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention is installed;
Fig. 3 is the axonometric projection graph of switching swivel nut in switching device assembly of the present invention;
Fig. 4 is the axonometric projection graph of the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Fig. 5 is the axonometric projection graph of the L shaped connecting link in the automobile wheel speed of the hall effect type with impact damper pick-up unit 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 shorter 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 automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Fig. 8 is the explosive view of the code-disc mechanism assembly in the automobile wheel speed of the hall effect type with impact damper pick-up unit 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 in Fig. 9 (b), Y goes out;
Figure 11 is the axonometric projection graph of the code-disc coupling shaft in the automobile wheel speed of the hall effect type with impact damper pick-up unit 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 automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 13 (b) is that the H-H of the front bearing end cap in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention is to view;
Figure 14 (a) is the axonometric projection graph of the rear bearing end cap in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 14 (b) is that the L-L of the rear bearing end cap in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention is to view;
Figure 15 is the axonometric projection graph of the code-disc in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 16 is the distribution plan in the location and installation hole of the code-disc in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 17 is the axonometric projection graph of the wheel speed testing agency assembly in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 18 is the axonometric projection graph of the buffer spring in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 19 is the explosive view of the impact damper of the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 20 be impact damper in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention along J-J to cut-open view;
Figure 21 (a) is the axonometric projection graph of the lower springs seat in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 21 (b) is the lower springs seat cut-open view vertically in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 22 (a) is the axonometric projection graph of the upper springs seat in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 22 (b) is the upper springs seat cut-open view vertically in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 23 is the axonometric projection graph of the car body fixed mechanism assembly in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
Figure 24 is the explosive view of the car body fixed mechanism assembly in the automobile wheel speed of the hall effect type with impact damper pick-up unit of the present invention;
In figure: the tested vehicle of I., II. is with 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. wheel speed 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, 10.3 number location and installation hole, 11.4 number location and installation hole, No. 12.5 location and installation holes, No. 13.6 location and installation holes, 14. Hall-type approach switch, 15 approach switch mount pads, 16. lower spring cups, 17. buffer springs, 18. upper spring seat, 19. the strong magnet backplate, 20. strong magnets, 21. connect pivot pin, 22. movable bearing support, 23. oscillating bearings.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1-4, the described automobile wheel speed of the hall effect type with impact damper pick-up unit, mainly be comprised of L shaped connecting link A, code-disc mechanism assembly B, the assembly C of wheel speed testing agency, impact damper D and top fixed mechanism assembly E.The described automobile wheel speed of the hall effect type with impact damper pick-up unit bottom is fixedly mounted on its code-disc mechanism assembly B on the wheel hub of tested vehicle I by switching device assembly III and nut, realizes the run-in synchronism of code-disc 5 and wheel; Strong magnet 13 in described top fixed mechanism assembly E is adsorbed on car body, realizes that the top of wheel speed detector is fixed.
Consult Fig. 1-3, the switching swivel nut a that described switching device assembly III is identical by the rolling hitch structure forms, described switching swivel nut a is hat-shaped structure, and the head of hat-shaped structure is a hollow structure of the hexahedron with internal thread, and the afterbody of hat-shaped structure is one with externally threaded screw rod.Transfer while installing will take turns speed detector and automotive hub, according to 3 principles of determining a plane, three the original hold-down nuts above wheel hub of dismantling, the bolt of the internal thread of hat-shaped structure head and three nuts of dismantling is tightened successively to (hat-shaped structure head now serves as the effect of wheel hub hold-down nut, and its hollow degree of depth is greater than the length that wanted snapping bolt protrudes in the axial direction), the afterbody screw rod of hat-shaped structure is through the installation axle hole b on code-disc 5 in the wheel speed detector, and by three cover nuts and pad, code-disc is fastened on automotive hub, the bottom of realization wheel speed detector is fixed.The dimensions fibrous root of described switching swivel nut a is determined 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 being staircase structure with two kinds of different-diameters vertically, diameter near L shaped connecting rod A short end is larger, diameter away from L shaped connecting rod A short end is less, so that the clamp nut of the assembly C of wheel speed testing agency penetrates connecting rod, arrives fixed position.Top and axle journal change location in 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 the assembly C of wheel speed testing agency with the clamp nut of the assembly C of wheel speed testing agency, the link that short end is L shaped connecting link A and code-disc mechanism assembly B, and be provided with the positioning round orifice that three row are divided equally on the circumferencial direction of its hollow-core construction, and angle between any two is 120 °, the circular hole of opening is uniformly distributed, the quantity of the circular hole of opening is 3～8 as required, the circular hole that described three row are divided equally is for realizing the location and installation hole connected with code-disc coupling shaft 1, fastening bolt holds out against in the locating slot of code-disc coupling shaft 1 through location and installation hole and the bolt head of L shaped connecting link A small end, realize the tight joint of L shaped connecting link A and code-disc coupling shaft 1, three row are in twos the fastening bolt of 120 ° and can guarantee that L shaped connecting link A connects with the firm of code-disc coupling shaft 1, the top carrying installation end that the long end of L shaped connecting link A is the wheel speed detector also is provided with external thread, for the assembly C of wheel speed testing agency being installed and connecting impact damper D.
Consult Fig. 7-10, described code-disc mechanism assembly B mainly is comprised 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 in described code-disc mechanism assembly B is connected on automotive hub by switching device assembly III, with the automotive hub synchronous rotary; In described code-disc mechanism assembly B, code-disc coupling shaft 1 is installed with L shaped connecting link A short end coaxial line, and an end of the fluting of code-disc coupling shaft 1 is sleeved in L shaped connecting link A hollow tubular, and uniform fastening bolt is realized code-disc coupling shaft 1 and L shaped connecting link tight joint by three row.
Consult Fig. 8-10, described forward end seal circle 3 is elastomeric material and is extruded in the trapezoidal annular groove that is arranged on front bearing end cap 2, is sleeved on the axle head of code-disc coupling shaft 1 simultaneously, 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, make 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; Simultaneously this mounting means make the outer ring of bearing 4 and code-disc in aggregates, as the wheel speed detector rotating part, with vehicle wheel rotation; 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 arranged on rear bearing end cap 7, is sleeved on code-disc coupling shaft 1 simultaneously, 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 comprised of longer locating slot axle head, the thrust shaft shoulder and shorter connection axle head, the location axle head of described longer fluting has the elongated slot that three sections are rectangle in a circumferential direction, and three elongated slots angle between any two is 120 °, this structure matches with L shaped connecting link A short end, and the fastening bolt that is in twos 120 ° by three row realizes that L shaped connecting link A connects with the firm of code-disc coupling shaft 1; The described thrust shaft shoulder, in the diameter of circumference radially and the equal diameters of bearing 4 inner ring outer rims, can just withstand on the inner ring of bearing 4 the thrust shaft shoulder, realizes bearing 4 inner rings location in the axial direction; Diameter and bearing 4 interference fit of described shorter connection axle head, realize being connected of bearing 4 and 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, with code-disc coupling shaft 1 coaxial line, coordinates installation.The head of front bearing end cap 2 is evenly equipped with six threaded holes, by bolt, realizes and being fixedly connected with of code-disc 5; 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, with code-disc coupling shaft 1 coaxial line, coordinates installation.Its head is enclosed construction, is evenly equipped with six threaded holes on periphery, by bolt, realizes and being fixedly connected with of code-disc 5; 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, be provided with a manhole (axis hole) centered by described code-disc 5, and radially be 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, an annular boss is set, has six uniform threaded holes, and are connected with front bearing end cap 2 by bolt on the circumferentia of boss; Simultaneously, the another side that code-disc 5 boss are relative has six uniform threaded holes, and is connected with rear front bearing end cap 7 by bolt.
Consult Figure 16, described code-disc 5 location and installation hole b, by radially forming to extraradial 6 non-equal angular location and installation holes 8,9,10,11,12,13.Due to dissimilar automobile, the quantity of its lug nut is not quite similar, the common types such as 4,5,6,8,10 or 12 are arranged, and the design of this structure can meet 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, by radially forming to extraradial location and installation hole 12, No. 11,5, location and installation hole, No. 10,4, location and installation hole, No. 9,3,8, No. 2 location and installation holes, 6 non-equal angular No. 1 location and installation holes and No. 6 location and installation holes 13.Due to dissimilar automobile, the quantity of its lug nut is not quite similar, the common types such as 4,5,6,8,10 or 12 are arranged, and the design of this structure can meet 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, No. 1 location and installation hole 8 and No. 2 location and installation holes 9 are 60 °, 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, the radius at two terminal circle arc distance code-disc 5 centers of mounting-positioning holes b, and in the radius R of proximal part=50, a deep end radius R=150, the spacing that meets wheel hub nuts distributes.Determine the principle on a plane according to three points, when code-disc 5 and wheel hub are connected and fixed, have at least 3 location and installation holes to be fixedly connected with wheel hub, to guarantee the stability of code-disc in motion process.When the wheel hub hold-down nut is 4,8 or 12 (i.e. 4 multiple), can use the location and installation hole 10, No. 8,3, No. 1 location and installation hole that is in twos 90 ° and No. 4 location and installation holes 11 to realize being fixedly connected with of code-disc 5 and wheel hub; When the wheel hub hold-down nut is 5 or 10 (i.e. 5 multiple), can use the location and installation hole 12, No. 8,5, No. 1 location and installation hole that is in twos 72 ° and No. 6 location and installation holes 13 to realize being fixedly connected with of code-disc 5 and wheel hub; When the wheel hub hold-down nut is 6 (i.e. 6 multiple), can use No. 1 location and installation hole 9, No. 8,2, location and installation hole and No. 4 location and installation holes 11 to realize be fixedly connected with (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-disc 5 and wheel hub.
Groove shape through hole on described code-disc 5 outer rims (being pulsed test signal hole c), be 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.The pulse signal hole c of the alignment probe code-disc 5 of Hall-type approach switch 14, when code-disc 5 during with vehicle wheel rotation, Hall-type approach switch 14 just produces pulse signal, the pulse signal produced according to Hall-type approach switch 14 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, the described wheel speed assembly C of testing agency mainly is comprised of Hall-type approach switch 14 and approach switch mount pad 15.Described approach switch mount pad 15 is L shaped, and two supporting surfaces of L shaped mount pad all have mounting hole, and the long support face of mount pad is by mounting hole, and in employing, lower nut is packed on the screw rod of connecting link A; Be processed with the threaded hole matched with the Hall-type approach switch on the short supporting surface of mount pad, described Hall-type approach switch 14 is threaded connection on the short supporting surface that is packed in mount pad, and by nut and locking plate, it is pinned.
Consult Figure 18-22, described impact damper D mainly is comprised of lower spring cup 16, buffer spring 17 and upper spring seat 18.Described lower spring cup 16 is threaded connection with L shaped connecting link A; Described upper spring seat 18 is fixed together by 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 the 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 larger disk one side end face, for being fixedly mounted with buffer spring 17; Simultaneously long end vertically through buffer spring 17 until the position, middle and lower part of upper spring seat 18, play buffer spring 17 the guide pole effect; A shorter end has internal thread, with the external thread on L shaped connecting link A top, is fastenedly connected.Described upper spring seat 18 is " ⊥ " shape structure, on its top, has internal thread, and is fastenedly connected and becomes one with the external thread of top fixed mechanism assembly E; Upper spring seat 18 provides the effect of lower spring cup 16 than the long end guide pipe simultaneously.
Consult Figure 23,24, described top fixed mechanism assembly E mainly is comprised of strong magnet backplate 19, strong magnet 20, connection pivot pin 21, movable bearing support 22 and oscillating bearing 23.Strong magnet 20 in described fixed mechanism assembly E is adsorbed on car body, realizes that the top of wheel speed detector is fixed.Described strong magnet backplate 19 is with the channel-section steel structure, on both ends of the surface, arranges respectively by two threaded holes, is bolted on movable bearing support 22, and protection strong magnet 20, prevent coming off of the strong magnet 20 that causes because of the vehicle high vibration; Described movable bearing support 22 is steel construction, on the rectangular parallelepiped part outer face of movable bearing support 22, opens by rectangular slot, and for strong magnet 20 is installed, the other end is hinged with oscillating bearing 23 by 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 large as far as possible contact area be arranged, and realizes being fastenedly connected of top fixed mechanism assembly E and car body.
Claims (10)
1. the automobile wheel speed of the hall effect type with an impact damper pick-up unit, comprise L shaped connecting link (A), code-disc mechanism assembly (B), wheel speed testing agency assembly (C), impact damper (D) and top fixed mechanism assembly (E), it is characterized in that, described 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, diameter near L shaped connecting link (A) short end is larger, diameter away from L shaped connecting link (A) short end is less, described code-disc mechanism assembly (B) is comprised of code-disc coupling shaft (1) and code-disc (5), described code-disc (5) is connected with the lower end of L shaped connecting link (A) by code-disc coupling shaft (1), code-disc mechanism assembly (B) is fixedly mounted on the wheel hub of tested vehicle (I) by switching device assembly (III) and nut, described wheel speed testing agency's assembly (C) is comprised of Hall-type approach switch (14) and approach switch mount pad (15), described Hall-type approach switch (14) is threaded with the threaded rod lower end of L shaped connecting link (A) by approach switch mount pad (15), the pulse signal hole (c) of the alignment probe code-disc (5) of Hall-type approach switch (14), described impact damper (D) is contained in the threaded rod upper end of L shaped connecting link (A), and be fixedly mounted on car body by top fixed mechanism assembly (E).
2. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 1, it is characterized in that, the transfer block (a) that described switching device assembly (III) is identical by the rolling hitch structure forms, described transfer block (a) is T shape structure, large end is a hollow structure of the hexahedron with internal thread, for being fixedly connected with the bolt on wheel hub, small end is one with externally threaded screw rod, and this screw rod is fixedly connected with code-disc mechanism assembly (B) screw thread; The dimensions of described transfer block (a) is determined according to the size of tested vehicle (I) boss bolt.
3. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 1, it is characterized in that, the link that short end in described L shaped connecting link (A) is L shaped connecting link (A) and 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 two row positioning round orifice is 120 °, every row positioning round orifice quantity is 3～8, code-disc coupling shaft (1) in described code-disc mechanism assembly (B) is provided with three locating slots corresponding with positioning round orifice on L shaped connecting link (A) short end, code-disc coupling shaft (1) and L shaped connecting link (A) short end suit, and pass the locating slot tight joint on described positioning round orifice and code-disc coupling shaft (1) by fastening bolt, the long end of described L shaped connecting link (A) is for the carrying installation end and be provided with external thread, for wheel speed testing agency assembly (C) being installed and being connected impact damper (D).
4. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 1, it is characterized in that, code-disc coupling shaft (1) in described code-disc mechanism assembly (B) is by front and back bearings end cap (2, 7) and bearing (4) be arranged in the manhole at code-disc (5) center, code-disc coupling shaft (1) is by the locating slot axle head, the thrust shaft shoulder be connected axle head and form, locating slot section on described locating slot axle head is the rectangle elongated slot, described 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, with code-disc (5), rotate, bearing (4) inner ring is connected with code-disc coupling shaft (1) interference fit, as the stiff end of wheel speed detector.
5. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 4, it is characterized in that, described front and back bearings end cap (2,7) is T shape through-hole structure, centre is provided with the trapezoidal annular groove that front and back sealing rings (3,6) is installed, be evenly equipped with threaded hole on the large end face of front and back bearings end cap (2,7), be fixedly connected with code-disc (5) by 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 enclosed construction.
6. according to the described automobile wheel speed of the hall effect type with impact damper of claim 1 to 4 any one pick-up unit, it is characterized in that, be disposed radially the through hole of two ring recess shapes on described code-disc (5), inner ring is location and installation hole (b), outer ring is pulse signal hole (c), the central circular through hole place of described code-disc (5) leading flank arranges an annular boss, raised head face is provided with uniform threaded hole, 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) by 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) by bolt.
7. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 6, it is characterized in that, location and installation hole (b) on described code-disc (5) radially is uneven distribution by code-disc (5), 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) form, described location and installation hole (b) distribution at an angle 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), No. 3 location and installation holes (10) are 90 ° with No. 4 location and installation holes (11), 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), No. 6 location and installation holes (13) are 72 ° with No. 1 location and installation hole (8), the end face in described location and installation hole (b) is circular-arc, and each location and installation hole (b) structure and measure-alike, the radius at the end face center of arc of mounting-positioning holes (b) to code-disc (5) center is at the radius R=50mm of proximal part, a deep end radius R=150mm, and the spacing that meets wheel hub nuts distributes.
8. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 6, it is characterized in that, pulse signal hole (c) on described code-disc (5) radially is evenly distributed by code-disc (5), when code-disc (5) during with vehicle wheel rotation, the Hall-type approach switch (14) be arranged on approach switch mount pad (15) just produces pulse signal, the pulse signal produced according to Hall-type approach switch (14) 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;
Described approach switch mount pad (15) is a L shaped bent plate, and the long end of bent plate and short end arrange respectively a threaded hole, and the long end threaded hole is connected with the screw flight of L shaped connecting link (A), and fixes by upper and lower two nuts; Described Hall-type approach switch (14) is threaded with the threaded hole of bent plate short end, and fixes by nut and the locking plate of both sides.
9. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 1, it is characterized in that, described impact damper (D) is by lower spring cup (16), buffer spring (17) and upper spring seat (18) form, described lower spring cup (16) and upper spring seat (18) are circular ring structure, its outside surface is provided with the helicla flute be connected with buffer spring (17) two ends respectively, the inside of lower spring cup (16) and upper spring seat (18) is threaded hole, 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), be threaded respectively.
10. the automobile wheel speed of the hall effect type with impact damper pick-up unit according to claim 1, it is characterized in that, described top fixed mechanism assembly (E) is by strong magnet backplate (19), strong magnet (20), connect pivot pin (21), movable bearing support (22) and oscillating bearing (23) form, have the rectangular slot that strong magnet (20) is installed on described movable bearing support (22) outer face, strong magnet (20) is fixed by bolts in movable bearing support (22) by strong magnet backplate (19), strong magnet (20) is adsorbed on car body by strong magnet backplate (19), the other end of movable bearing support (22) is hinged with oscillating bearing (23) by connecting pivot pin (21), described oscillating bearing (23) is swung according to the difference of different tilting of car body angles, make strong magnet backplate (19) reliably contact with car body.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103604941B (en) * | 2013-11-27 | 2016-01-27 | 奇瑞汽车股份有限公司 | A kind of wheel of vehicle device for testing rotating speed |
| CN104407614B (en) * | 2014-10-23 | 2017-08-25 | 河北工业大学 | Four-wheel-type indoor mobile robot |
| CN104374945A (en) * | 2014-11-07 | 2015-02-25 | 上海交通大学 | Vehicle speed measurement device and method |
| 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 |
| US10345119B2 (en) | 2017-01-05 | 2019-07-09 | GM Global Technology Operations LLC | Systems for observing a rotation of a wheel |
| 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 |
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| CN2634483Y (en) * | 2003-07-04 | 2004-08-18 | 上海航天汽车机电股份有限公司 | Wheel speed sensor |
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