CN202631560U - Automobile wheel speed detection device - Google Patents
Automobile wheel speed detection device Download PDFInfo
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- CN202631560U CN202631560U CN 201220277250 CN201220277250U CN202631560U CN 202631560 U CN202631560 U CN 202631560U CN 201220277250 CN201220277250 CN 201220277250 CN 201220277250 U CN201220277250 U CN 201220277250U CN 202631560 U CN202631560 U CN 202631560U
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Abstract
The utility model discloses an automobile wheel speed detection device, which mainly consists of a positioning disc (A), a spline housing (B), a motor fixed clip (C), a direct-current speed measuring generator (D), a connecting rod (E) and an upper fixing mechanism (F). The positioning disc (A) of lower part of the automobile wheel speed detection device is fixedly installed on a wheel hub of a passive-type vehicle I through an adapter device assembly III and a nut, so that the synchronous rotation of the positioning disc (A) and a wheel is realized; and strong magnet (26) in the upper fixing mechanism assembly (F) is adsorbed on a vehicle body, so that the upper part of the wheel speed detection device is fixed. A speed measuring function of a direct-current speed measuring motor is introduced to the automobile wheel speed detection device, and a driving rotation speed signal of the wheel is inversely converted to a potential signal so as to realize the measurement of the rotation speed of the wheel, so that the cost is low, convenience in test is realized, the test precision is high, and strong universality is realized.
Description
Technical field
The utility model relates to a kind of detection system that is applied to automotive field, and specifically, the utility model relates to a kind of automobile wheel speed pick-up unit.
Background technology
Wheel speed is the important parameter that the road formula is tested, and is significant for the evaluation of vehicle performance.The main sensors such as Hall-type, electromagnetic type, magneto-electric and photo-electric of using of wheel speed test are at present taken turns measuring indirectly of speed; Measuring accuracy receives that ectocine is big, be difficult for during low speed or problem such as energy measurement not; And overseas equipment costs an arm and a leg, and these are all restricting the test of taking turns fast parameter to a certain extent.
Warp retrieval in the similar techniques, (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, causes the result that measures inaccurate or do not reach the purpose of tachometric survey.
(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 utility model discloses a kind of automobile wheel speed pick-up unit, has realized the fast detecting of wheel speed.Introduced the speed measuring function of DC velocity measuring motor in this device, the character that is directly proportional with rotating speed of motor according to the induced potential at DC tachometer generator brush two ends, and can reverse tach signal and change the measurement that electric potential signal is realized vehicle wheel rotational speed into.This proving installation cost is low, convenient test, and measuring accuracy is high, has very strong versatility.
Summary of the invention
The utility model technical matters to be solved is to have overcome the problem that prior art exists, and a kind of novel automobile wheel speed pick-up unit is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize:
A kind of automobile wheel speed pick-up unit; Mainly form by positioning disk (A), spline housing (B), motor fixing clamp (C), DC tachometer generator (D), connecting link (E) and top fixed mechanism (F); The disc face of said positioning disk (A) is provided with radially radial grooved location and installation hole; Be fixedly mounted on by on the wheel hub of examination vehicle (I) through switching device assembly (III) and nut, realize the run-in synchronism of positioning disk (A) and wheel; Said positioning disk (A) center is provided with splined shaft (7), and is connected with DC tachometer generator (D) through spline housing (B); DC tachometer generator (D) is connected with connecting link (E) bottom through motor fixing clamp (C); Connecting link (E) top is adsorbed on the car body through the strong magnet (26) in the top fixed mechanism assembly (F), and realization top is fixed.
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 T shape structure; The big end of T shape structure is the hollow hexahedron structure that has internal thread that matches with the automotive hub bolt, replaces original hold-down nut above the wheel hub, and the small end of T shape structure is one to have externally threaded screw rod; The screw rod of T shape structure small end passes the location and installation hole on the positioning disk (A); And by three cover nuts and pads positioning disk (A) is fastened on the automotive hub, realizing that the bottom of wheel speed detector is fixed, the dimensions of described switching swivel nut (a) is looked the size of tested vehicle I boss bolt and is decided.
Said positioning disk (A) center is provided with the splined shaft (7) that the female spline with spline housing (B) is connected with sliding pair; Male splines on the said splined shaft (7) is a rectangular spline; Splined shaft (7) is adjustable vertically with the length of fit of spline housing (B), to satisfy the variation of distance between different automobile types hub surface and the car body vertical surface.
The location and installation hole of described positioning disk (A); By radially forming to the location and installation hole that extraradial 6 non-equal angles distribute; Location and installation hole I (1) is 60 ° with location and installation hole II (2); Location and installation hole II (2) is 30 ° with location and installation hole III (3), and location and installation hole III (3) is 90 ° with location and installation hole IV (4), and location and installation hole IV (4) is 36 ° with location and installation hole V (5); Location and installation hole V (5) is 72 ° with location and installation hole VI (6), and location and installation hole VI (6) is 72 ° with location and installation hole I (1);
Said 6 location and installation hole dimensions are identical; Two ends, location and installation hole are circular-arc; Two circular arc distance of center circle are from the radius R=50mm of positioning disk (A) radius centered at proximal part; A deep end radius R=150mm, the spacing that satisfies the automotive hub nut distributes, and positioning disk (A) has at least 3 location and installation holes to be fixedly connected with wheel hub.
Said spline housing (B) is a through-hole structure, reaches the dowel hole (8) that is connected with motor shaft by female spline and forms, and female spline that spline housing (B) end is provided with and the male splines on the splined shaft (7) are connected with sliding pair, realize the moment of torsion transmission of wheel; The dowel hole (8) that spline housing (B) other end is provided with is connected through a general flat key (9) with the output shaft of DC tachometer generator (D), and wheel torque is delivered to DC tachometer generator (D), and then accomplishes the collection of wheel speed signal.
Said motor fixing clamp (C) two semicircle clips identical by two nested structures, that be provided with pilot hole are formed; The short end of clip is provided with a pilot hole; Long end is provided with two pilot holes; Two cover clips fit in using fixedly DC tachometer generator (D), and the long end of clip flexibly connects with connecting link (E).
It is ZYS-A series DC permanet-magnet tachometer generator that said DC tachometer generator (D) adopts model.
Said connecting link (E) is made up of last lower connecting rod (14,12) and middle buffer spring (13), and described lower connecting rod (12) lower end is connected through bearing pin (27) and motor fixing clamp (C); Described upper connecting rod (14) is stair-stepping long tube structure; The bottom caliber is greater than top; Form clearance fit with lower connecting rod, play guide pipe, described buffer spring (13) is installed between the lower connecting rod; Absorb the vertical vibration in the vehicle operating, guarantee the accuracy of wheel velocity signal capturing; The upper end of upper connecting rod (14) is connected through positioning supports axle (18) and top fixed mechanism (F).
Said top fixed mechanism (F) is made up of structure identical two cover adjustable angle formula adsorbing mechanisms (17) and coupling shaft (18); Said coupling shaft (18) is a symmetrical multidiameter; Two ends are processed with screw thread; The mounting hole clearance fit of its intermediate shaft part and upper connecting rod (14), and through the axial location of back-up ring (30) to connecting link (E), coupling shaft (18) two ends are connected with adjustable angle formula adsorbing mechanism (17).
Described adjustable angle formula adsorbing mechanism is made up of linking arm (23), strong magnet (26), location swivel nut (25), coupling bolt (22); Described coupling bolt strong magnet (26) center is processed with tapped blind hole; Cooperate with coupling bolt (22), and process seam, to realize the location of location swivel nut (25) in the end; Said linking arm (23) two ends are provided with orthogonal ears ring; Be connected with strong magnet (26) with location swivel nut (25) through coupling bolt (22), linking arm (23) partly adopts clearance fit with the optical axis of coupling bolt (22), makes linking arm (23) rotate with respect to strong magnet.
Compared with prior art the beneficial effect of the utility model is:
1. the described automobile wheel speed pick-up unit of the utility model has been developed the positioning disk device of a kind of highly versatile, reliable installation; The radiation length of relative angle on the positioning disk between the mounting hole and positioning disk mounting hole has 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 described automobile wheel speed pick-up unit of the utility model adopts DC tachometer generator test carriage wheel speed, tests accurately, simple to operate, has designed a kind of torque-transmitting mechanisms simultaneously and effectively wheel torque has been delivered on the tech-generator.
3. the described automobile wheel speed pick-up unit of the utility model has designed adjustable angle formula adsorbing mechanism; Can adjust the setting angle of adjustable adsorbing mechanism according to car body surface in vertical tilt quantity; Make the absorption plane of strong magnet to adsorb with car body more in large area, so that bigger absorption affinity to be provided.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is that the described automobile wheel speed pick-up unit of the utility model 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 described automobile wheel speed pick-up unit of the utility model is installed;
Fig. 3 is the axonometric projection graph of switching swivel nut in the described switching device assembly of the utility model;
Fig. 4 is the axonometric projection graph of the described automobile wheel speed pick-up unit of the utility model;
Fig. 5 is the axonometric projection graph of positioning disk in the described automobile wheel speed pick-up unit of the utility model;
Fig. 6 is the distribution plan in location and installation hole in the described positioning disk of the utility model;
Fig. 7-a is the axonometric projection graph of the described spline housing of the utility model;
Fig. 7-b is the cut-open view vertically of the described spline housing of the utility model;
Fig. 8 is the explosive view that described DC tachometer generator of the utility model and spline housing are installed;
Fig. 9 is the axonometric projection graph of the described DC tachometer generator of the utility model;
Figure 10 is the explosive view of the described motor fixing clamp of the utility model;
Figure 11 is the axonometric projection graph of the described connecting link of the utility model;
Figure 12 is the explosive view of the described connecting link of the utility model;
Figure 13 is the described connecting link assembly of a utility model cut-open view vertically;
Figure 14 is the axonometric projection graph of the described top of the utility model fixed mechanism;
Figure 15 is the explosive view of the described top of the utility model fixed mechanism;
Figure 16 is the axonometric projection graph of the described coupling shaft of the utility model;
Figure 17 is the axonometric projection graph of the described adjustable angle formula of the utility model adsorbing mechanism;
Figure 18 is the explosive view of the described adjustable angle formula of the utility model adsorbing mechanism;
Figure 19 is the axonometric projection graph of the described automobile wheel speed pick-up unit of the utility model constraint mechanism assembly;
Figure 20 is the partial view of Figure 19 at the X place;
Figure 21 is the partial view of Figure 19 at the Y place;
Among the figure: I. by the formula vehicle, II. automobile wheel speed pick-up unit, III. switching device assembly;
A. positioning disk, B. spline housing, C. motor fixing clamp, D. tech-generator, E. connecting link, F. top fixed mechanism;
A. the swivel nut of transferring; 1. location and installation hole I 2. location and installation hole II 3. location and installation hole III 4. location and installation hole IV 5. location and installation hole V 6. location and installation hole VI 7. splined shafts 8. dowel holes 9. general flat keys 10. clip I, 11. clip II, 12. lower connecting rods, 13. buffer springs, 14. upper connecting rods; 15,21. set nuts, 16,20. lock washers, 17. adjustable angle formula adsorbing mechanisms, 18. coupling shafts; 22. coupling bolt, 23. linking arms, 24. pads; 25. the strong magnet set nut, 26. strong magnets, 27. bearing pins; 28. split pin, 29. backstop pads, 30. back-up rings.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 1-4, described automobile wheel speed pick-up unit mainly is made up of positioning disk A, spline housing B, motor fixing clamp C, DC tachometer generator D, connecting link E and top fixed mechanism F.Described automobile wheel speed pick-up unit bottom is fixedly mounted on by on the wheel hub of examination vehicle I through switching device assembly III and nut, realizes the run-in synchronism of positioning disk A and wheel; Strong magnet 26 among the described top fixed mechanism assembly F 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 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 the degree of depth of nut inner hole is greater than the length of the institute's snapping bolt of wanting protrusion in the axial direction), the screw rod of T shape structure small end passes takes turns in the speed detector suitable location and installation hole on the positioning disk A; And by three cover nuts and pads positioning disk 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, described positioning disk A is that the center is provided with splined shaft 7, and disc face is provided with the disc-shaped structure of radially radial installation through holes (being the location and installation slotted eye).Described splined shaft 7 is arranged on the axle center place of positioning disk A near spline housing B one side; Male splines on the splined shaft 7 is a rectangular spline; Be connected with sliding pair with the female spline of spline housing B, the moment of torsion of wheel is passed to DC tachometer generator D, the auxiliary collection of accomplishing wheel speed signal; Simultaneously, the length of fit of splined shaft 7 and spline housing B is prolonged adjustable vertically, to satisfy the variation of distance between different automobile types hub surface and the car body vertical surface.
The location and installation hole of described positioning disk A is by radially forming to the location and installation hole 1,2,3,4,5,6 that extraradial 6 non-equal angles distribute.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 positioning disk A and dissimilar automotive hub location and installation, and handled easily, versatility are good.According to above requirement; The location and installation hole of described positioning disk A is when design, and location and installation hole 1 is 60 ° with location and installation hole 2, and location and installation hole 2 is 30 ° with location and installation hole 3; Location and installation hole 3 is 90 ° with location and installation hole 4; Location and installation hole 4 is 36 ° with location and installation hole 5, and location and installation hole 5 is 72 ° with location and installation hole 6, and location and installation hole 6 is 72 ° with location and installation hole 1.
Described location and installation hole is six measure-alike groove shape through holes; Installing and locating hole two circular arc distance of center circle are from the radius R=50mm of positioning disk (A) radius centered at proximal part; A deep end radius R=150mm, the spacing that satisfies the automotive hub nut distributes.Confirm the principle on a plane when being connected fixedly with wheel hub positioning disk A, to have 3 location and installation holes to be fixedly connected, at least according to three points to guarantee the stability of positioning disk A in motion process with wheel hub.When the wheel hub hold-down nut is 4,8 or 12 (i.e. 4 multiple), can use the location and installation hole 1, location and installation hole 3 and the location and installation hole 4 that are 90 ° in twos to realize being fixedly connected of positioning disk A 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 1, location and installation hole 5 and the location and installation hole 6 that are 72 ° in twos to realize being fixedly connected of positioning disk A and wheel hub; When the wheel hub hold-down nut is 6 (i.e. 6 multiple); Can use location and installation hole 1, location and installation hole 2 and location and installation hole 4 to realize be fixedly connected (location and installation hole 1 is 60 ° with location and installation hole 2, and location and installation hole 2 and location and installation hole 4 are 120 °) of positioning disk A and wheel hub.
Consult Fig. 7-8, described spline housing B reaches the dowel hole 8 that is connected with motor shaft by female spline and forms, and is through-hole structure, and the female spline of spline housing B one end setting and the male splines on the splined shaft 7 are connected with sliding pair, realize the moment of torsion transmission of wheel; The dowel hole 8 that the spline housing B other end is provided with is connected through a general flat key 9 with the output shaft of DC tachometer generator D, and wheel torque is delivered to DC tachometer generator D, and then accomplishes the collection of wheel speed signal.
Consult Fig. 9, what described DC tachometer generator D adopted is that model is a ZYS-A series DC permanet-magnet tachometer generator, and it is good that ZYS-A type Permanent Magnet DC Tachogeneator has performance; Precision is high; In light weight, advantage such as volume is little is under the situation of steady state value at pull-up resistor; Its output voltage is the line shape function of rotating speed, and the output characteristics of its both forward and reverse directions rotation is symmetrical.
Consult Figure 10; Described motor fixing clamp C is made up of two nested structures semicircle clip I 10, clip II 11 identical, that be provided with pilot hole; Short end of clip I 10, clip II 11 is provided with a pilot hole; Long end is provided with two pilot holes, and two cover clip I 10, clip II 11 fit in using, and DC tachometer generator D is fixed in the manhole that the circular clip I of two halves 10, clip II 11 constitute; And through bolt and nut with two the pilot holes of a short end and the pilot hole in the nearly center of circle of long end lock connection respectively, so that DC tachometer generator D to be provided the pretightning force of circumferencial direction; Long end is connected with connecting link E through bearing pin 27 away from the pilot hole in the center of circle; And realize the axial location of bearing pins 27 through split pin 28 and backstop pad 29; And connecting link E can rotate around bearing pin 27 and regulate connecting link E and the angle of car body at vertical plane, so that the fixing of top fixed mechanism F and car body.
Consult Figure 11-13, described connecting link E mainly is made up of lower connecting rod 12, buffer spring 13 and upper connecting rod 14.Described lower connecting rod 12 is the elongate tubular structure, and its lower end is provided with the fork configuration of an installation axle hole and mounting groove, and the end processes the mounting plane of two symmetries, realizes and being connected of motor fixing clamp C through bearing pin 27; The end face of its upper end processes seam, as following of buffer spring 13; Described upper connecting rod 14 is stair-stepping long tube structure, and the top caliber is consistent with lower connecting rod 12, and its underpart also processes seam; Upper spring seat as buffer spring 13; The bottom caliber of upper connecting rod is bigger, forms clearance fit with lower connecting rod, plays the effect of guide pipe.The upper end of upper connecting rod 14 is processed with an installation axle hole, and the end also processes the mounting plane of two symmetries, through being connected of 18 realizations of positioning supports axle and top fixed mechanism F.Described buffer spring 13 is installed between the lower connecting rod, absorbs the vertical vibration in the vehicle operating, guarantees the accuracy of wheel velocity signal capturing.
Consult Figure 14,15, described top fixed mechanism F is by set nut 15,21, lock washer 16,20, and adjustable angle formula adsorbing mechanism 17, coupling shaft 18 is formed.Described adjustable angle formula adsorbing mechanism 17 is main parts of top fixed mechanism F, and realizes the fixing of automobile wheel speed pick-up unit and car body through strong magnet 26.
Consult Figure 16, described coupling shaft 18 is ladder symmetrical structure axles, and path portion small in ends processes screw thread, and the two ends that path portion broad in the middle is process the back-up ring locating slot.Described coupling shaft 18 passes from the installation axle hole of connecting link E mounting plane one end vertically, the intermediate shaft part of coupling shaft 18 and the mounting hole clearance fit of upper connecting rod 14, and pass through the axial location that back-up ring 30 is realized connecting link E.
Consult Figure 17,18, described adjustable angle formula adsorbing mechanism 17 structures are identical, form by linking arm 23, strong magnet 26, location swivel nut 25, coupling bolt 22 and pad 24.Described coupling bolt strong magnet 26 centers are processed with tapped blind hole, cooperate with coupling bolt 22, and process seam in the end, to realize the location of swivel nut 25.Linking arm 23 is connected with strong magnet 26 through coupling bolt 22; The optical axis of linking arm and coupling bolt partly adopts clearance fit simultaneously; Make linking arm to rotate, make whole device be more convenient for installing, also guaranteed the good position relation between rotor and stator simultaneously with respect to strong magnet
Described linking arm 23 is right cylinders that two ends are provided with orthogonal ears ring structure; The last earrings of linking arm and coupling bolt 22 coaxial lines are installed; The following earrings of linking arm 23 is sleeved on the end of coupling shaft 18, through set nut 15 (21) and lock washer 16 (20) it is packed on the coupling shaft 18, and can does certain rotation with respect to coupling shaft 18; Guarantee that strong magnet 23 and car body surface have enough big adsorption area, so that bigger absorption affinity to be provided.Consult Figure 19-21; Described motor fixing clamp C is connected with connecting link E through bearing pin 27; And realize the axial location of bearing pins 27 through split pin 28 and backstop pad 29; And connecting link E can rotate around bearing pin 27 and regulate connecting link E and the angle of car body at vertical plane, so that the fixing of top fixed mechanism F and car body; The back-up ring that described top fixed mechanism F is installed in two back-up ring locating slots on the coupling shaft 18 through two symmetries is implemented in the axial constraint of connecting link E rod end through hole.
Principle of work: the described automobile wheel speed pick-up unit of the utility model; Its principle of work explains it is the output electric energy that the mechanical energy of vehicle wheel rotational speed the vehicle ' process is converted to tech-generator from the angle of energy conversion; Explain it is that tach signal with wheel converts the d. c. voltage signal output that is directly proportional with rotating speed to from the angle of conversion of signals; And tach signal being collected computer system through data acquisition system (DAS), the processing of the line data of going forward side by side obtains the rotating speed of wheel.
Specifically, according to the output characteristics of Faraday's electromagnetic induction law and DC tachometer generator, the induced potential at generator brush two ends is directly proportional with rotating speed of motor, and its potential value characterizes the size of rotating speed, i.e. E
a=K
eN, Dyn. can convert tach signal to electric potential signal, thereby can be used for measuring vehicle wheel rotational speed.
Claims (10)
1. an automobile wheel speed pick-up unit mainly is made up of positioning disk (A), spline housing (B), motor fixing clamp (C), DC tachometer generator (D), connecting link (E) and top fixed mechanism (F), it is characterized in that,
The disc face of said positioning disk (A) is provided with radially radial grooved location and installation hole, is fixedly mounted on by on the wheel hub of examination vehicle (I) through switching device assembly (III) and nut, realizes the run-in synchronism of positioning disk (A) and wheel; Said positioning disk (A) center is provided with splined shaft (7), and is connected with DC tachometer generator (D) through spline housing (B); DC tachometer generator (D) is connected with connecting link (E) bottom through motor fixing clamp (C); Connecting link (E) top is adsorbed on the car body through the strong magnet (26) in the top fixed mechanism assembly (F), and realization top is fixed.
2. a kind of automobile wheel speed pick-up unit according to claim 1; It is characterized in that; 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 the hollow hexahedron structure that has internal thread that matches with the automotive hub bolt; Replace original hold-down nut above the wheel hub; The small end of T shape structure is one to have externally threaded screw rod, and the screw rod of T shape structure small end passes the location and installation hole on the positioning disk (A), and by three cover nuts and pad positioning disk (A) is fastened on the automotive hub; The bottom of realization wheel speed detector is fixed, and the dimensions of described switching swivel nut (a) is looked the size of tested vehicle I boss bolt and decided.
3. a kind of automobile wheel speed pick-up unit according to claim 1; It is characterized in that; Said positioning disk (A) center is provided with the splined shaft (7) that the female spline with spline housing (B) is connected with sliding pair; Male splines on the said splined shaft (7) is a rectangular spline, and splined shaft (7) is adjustable vertically with the length of fit of spline housing (B), to satisfy the variation of distance between different automobile types hub surface and the car body vertical surface.
4. a kind of automobile wheel speed pick-up unit according to claim 1; It is characterized in that the location and installation hole of described positioning disk (A) is by radially forming to the location and installation hole that extraradial 6 non-equal angles distribute; Location and installation hole I (1) is 60 ° with location and installation hole II (2); Location and installation hole II (2) is 30 ° with location and installation hole III (3), and location and installation hole III (3) is 90 ° with location and installation hole IV (4), and location and installation hole IV (4) is 36 ° with location and installation hole V (5); Location and installation hole V (5) is 72 ° with location and installation hole VI (6), and location and installation hole VI (6) is 72 ° with location and installation hole I (1);
Said 6 location and installation hole dimensions are identical; Two ends, location and installation hole are circular-arc; Two circular arc distance of center circle are from the radius R=50mm of positioning disk (A) radius centered at proximal part; A deep end radius R=150mm, the spacing that satisfies the automotive hub nut distributes, and positioning disk (A) has at least 3 location and installation holes to be fixedly connected with wheel hub.
5. according to claim 1 or 3 described a kind of automobile wheel speed pick-up units; It is characterized in that; Said spline housing (B) is a through-hole structure; Reach the dowel hole (8) that is connected with motor shaft by female spline and form, female spline that spline housing (B) end is provided with and the male splines on the splined shaft (7) are connected with sliding pair, realize the moment of torsion transmission of wheel; The dowel hole (8) that spline housing (B) other end is provided with is connected through a general flat key (9) with the output shaft of DC tachometer generator (D), and wheel torque is delivered to DC tachometer generator (D), and then accomplishes the collection of wheel speed signal.
6. a kind of automobile wheel speed pick-up unit according to claim 1; It is characterized in that; Said motor fixing clamp (C) two semicircle clips identical by two nested structures, that be provided with pilot hole are formed, and the short end of clip is provided with a pilot hole, and long end is provided with two pilot holes; Two cover clips fit in using fixedly DC tachometer generator (D), and the long end of clip flexibly connects with connecting link (E).
7. a kind of automobile wheel speed pick-up unit according to claim 1 is characterized in that, it is ZYS-A series DC permanet-magnet tachometer generator that said DC tachometer generator (D) adopts model.
8. a kind of automobile wheel speed pick-up unit according to claim 1; It is characterized in that; Said connecting link (E) is made up of last lower connecting rod (14,12) and middle buffer spring (13), and described lower connecting rod (12) lower end is connected through bearing pin (27) and motor fixing clamp (C); Described upper connecting rod (14) is stair-stepping long tube structure; The bottom caliber is greater than top; Form clearance fit with lower connecting rod, play guide pipe, described buffer spring (13) is installed between the lower connecting rod; Absorb the vertical vibration in the vehicle operating, guarantee the accuracy of wheel velocity signal capturing; The upper end of upper connecting rod (14) is connected through positioning supports axle (18) and top fixed mechanism (F).
9. a kind of automobile wheel speed pick-up unit according to claim 1; It is characterized in that said top fixed mechanism (F) is made up of structure identical two cover adjustable angle formula adsorbing mechanisms (17) and coupling shaft (18), said coupling shaft (18) is a symmetrical multidiameter; Two ends are processed with screw thread; The mounting hole clearance fit of its intermediate shaft part and upper connecting rod (14), and through the axial location of back-up ring (30) to connecting link (E), coupling shaft (18) two ends are connected with adjustable angle formula adsorbing mechanism (17).
10. according to claim 1 or 9 described a kind of automobile wheel speed pick-up units; It is characterized in that; Described adjustable angle formula adsorbing mechanism is made up of linking arm (23), strong magnet (26), location swivel nut (25), coupling bolt (22), and described coupling bolt strong magnet (26) center is processed with tapped blind hole, cooperates with coupling bolt (22); And process seam in the end; To realize the location of location swivel nut (25), said linking arm (23) two ends are provided with orthogonal ears ring, are connected with strong magnet (26) with location swivel nut (25) through coupling bolt (22); Linking arm (23) partly adopts clearance fit with the optical axis of coupling bolt (22), makes linking arm (23) rotate with respect to strong magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220277250 CN202631560U (en) | 2012-06-10 | 2012-06-10 | Automobile wheel speed detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220277250 CN202631560U (en) | 2012-06-10 | 2012-06-10 | Automobile wheel speed detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692520A (en) * | 2012-06-10 | 2012-09-26 | 吉林大学 | Automobile wheel speed detection device |
| CN106706948A (en) * | 2016-11-25 | 2017-05-24 | 合肥工业大学 | Wheel speed measuring device |
| CN106886215A (en) * | 2015-12-15 | 2017-06-23 | 北京智行者科技有限公司 | A kind of electric car based on multiaxis trolleybus tracking tracking system and with it |
-
2012
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692520A (en) * | 2012-06-10 | 2012-09-26 | 吉林大学 | Automobile wheel speed detection device |
| CN102692520B (en) * | 2012-06-10 | 2013-10-23 | 吉林大学 | Automobile wheel speed detection device |
| CN106886215A (en) * | 2015-12-15 | 2017-06-23 | 北京智行者科技有限公司 | A kind of electric car based on multiaxis trolleybus tracking tracking system and with it |
| CN106706948A (en) * | 2016-11-25 | 2017-05-24 | 合肥工业大学 | Wheel speed measuring device |
| CN106706948B (en) * | 2016-11-25 | 2019-04-12 | 合肥工业大学 | A kind of wheel Wheel-speed measuring apparatus |
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