TWI479155B - Locomotive wheel scale induction device - Google Patents

Description

Locomotive wheel speed sensing device

The present invention relates to a speed sensing device, and more particularly to a wheel speed sensing device for a locomotive.

Referring to FIG. 1, a wheel speed sensing device for a rear wheel of a conventional locomotive includes a rear rocker arm 101 and a rear wheel 102 pivotally mounted to the rear rocker arm 101. The rear wheel 102 includes a rear axle 103 pivotally mounted to the rear rocker arm 101, a rear rim 104 disposed on the rear axle 103, and a brake locked to the rear rim 104 and having a central aperture 106 formed therein. Disk 105.

The wheel speed sensing device includes a reading disk 11 locked on the rear rim 104 and located in the central hole 106, and a pair of sensors 12 disposed on the rear rocker arm 101. And a set of rear axles 103 disposed on the rear wheel 102, and the ends are supported against the rear rocker arm 101 and the bushing 13 of the rear rim 104.

Although the reading disk 11 can be sensed by the sensor 12 to measure the rotational speed of the rear wheel 102, it is converted into the wheel speed of the rear wheel 102. However, the sensor 12 disposed on the rear rocker arm 101 not only occupies the outer space of the rear rocker arm 101, but also increases the vehicle width, and the sensor 12 is too close to the high temperature exhaust pipe (not shown). Easy to damage due to high temperature .

Moreover, the read disk 11 and the sensor 12 are respectively disposed on the rear rim 104 and the rear rocker arm 101, and not only the rear rim 104 and the rear rocker arm 101 need to be additionally processed. Moreover, the exposed reading disk 11 is easily affected by the foreign object and the deformation affects the sensing accuracy of the sensor 12, and the minute gap between the reading disk 11 and the sensor 12 is easily blocked by the foreign matter to affect the sensing accuracy.

In addition, since the reading disk 11 is located in the central hole 106 of the brake disk 105, considering the sensing capability of the sensor 12, the area of the reading disk 11 cannot be reduced at will, and the braking disk 105 is caused to be attached. The volume can no longer be reduced.

Accordingly, it is an object of the present invention to provide a wheel speed sensing device for a locomotive that can effectively utilize space, has a long service life, and can avoid cost, weight, and volume increase, and can also simplify design and assembly.

Thus, the wheel speed sensing device of the locomotive of the present invention includes a rocker arm and a rear wheel pivotally mounted on the rocker arm. The wheel speed sensing device comprises a rotating unit disposed on the rear wheel, and a sensing unit disposed corresponding to the rotating unit.

The rotating unit includes a magnetic ring seat disposed between the rocker arm and the rear wheel and rotatable with the rear wheel, and a magnetic member disposed on the magnetic ring seat. The sensing unit includes an outer casing disposed between the rocker arm and the rear wheel and covering the magnetic ring seat and the magnetic member, and an inductive component disposed on the outer casing to sense the magnetic member , the shell is not with The magnetic ring seat rotates.

The utility model has the beneficial effects that the rotating unit and the sensing unit disposed between the rocker arm and the rear wheel can not only measure the wheel speed of the rear wheel, but also fully utilize the space, and can also avoid high temperature. The exhaust pipe affects the service life while eliminating the need for additional machining to avoid cost, weight and volume increases, and simplifies design and assembly.

2‧‧‧ locomotive

21‧‧‧ rocker arm

211‧‧‧ positioning slot

212‧‧‧Limited parts

22‧‧‧ rear wheel

221‧‧‧second bearing

222‧‧‧ Rear axle

223‧‧‧Rear rim

224‧‧‧ jack

225‧‧‧Support column

23‧‧‧煞盘盘

231‧‧‧Central hole

3‧‧‧Rotating unit

31‧‧‧ magnetic ring seat

32‧‧‧Sleeve

321‧‧‧Bump

33‧‧‧ collar

331‧‧‧Flange

332‧‧‧ Body Department

333‧‧‧ card slot

334‧‧‧Flexible hook

34‧‧‧Magnetic parts

341‧‧ ‧ ribs

4‧‧‧Sensor unit

41‧‧‧ Shell

411‧‧‧ positioning bumps

42‧‧‧Inductive components

43‧‧‧First bearing

44‧‧‧Signal line

5‧‧‧ Bushing

6‧‧‧Blocks

Other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a partial cross-sectional view illustrating a wheel speed sensing device of a conventional locomotive rear wheel; FIG. 2 is a partial cross-sectional view illustrating the present invention A preferred embodiment of a wheel speed sensing device for inventing a locomotive; FIG. 3 is a partially enlarged cross-sectional view for assistance in explaining FIG. 2; FIG. 4 is an exploded perspective view showing the preferred embodiment and a rocker arm and a rear wheel Positional relationship; and FIG. 5 is a perspective view showing a combination of a magnetic ring seat and a magnetic member in the preferred embodiment.

Referring to Figures 2 and 3, a preferred embodiment of the wheel speed sensing device of the locomotive of the present invention includes a rocker arm 21, a rear wheel 22 pivotally mounted to the rocker arm 21, and a lock on the rear wheel. 22 and a brake disc 23 of a central hole 231 is formed.

Referring to Figures 3 and 4, the rocker arm 21 is formed with a positioning groove 211 facing the rear wheel 22. The rear wheel 22 has a second bearing 221 disposed in the rocker arm 21, a rear axle 222 extending through the second bearing 221, and a plurality of jacks disposed on the rear axle 222. The rear rim 223 of the 224, and a plurality of support posts 225 extending from the rear rim 223 toward the rocker arm 21. The brake disc 23 is locked to the support column 225.

The wheel speed sensing device is located between the support columns 225, and the wheel speed sensing device includes a rotating unit 3 disposed on the rear wheel 22 and located between the rocker arm 21 and the rear wheel 223. The rotating unit 3 corresponds to the sensing unit 4 disposed between the rocker arm 21 and the rear wheel 223, a set of bushings 5 disposed on the rear axle 222, and a rotating unit 3 and the sensing unit 4 A stopper 6 that blocks the gap between the rotating unit 3 and the sensing unit 4 is provided. In the preferred embodiment, the blocking member 6 is an oil seal.

The rotating unit 3 includes a magnetic ring seat 31 disposed between the rocker arm 21 and the rear wheel 22 and rotatable with the rear wheel 22, and a magnetic member 34 disposed on the magnetic ring seat 31. The magnetic ring holder 31 has a sleeve 32 which is placed on the rear wheel shaft 222 and made of a metal material, and a sleeve 33 which is placed on the sleeve 32 and made of a non-magnetic material. The sleeve 32 has a plurality of protrusions 321 correspondingly inserted into the insertion holes 224. The magnetic member 34 is annularly disposed on the collar 33, and the blocking member 6 is disposed on the sensing unit 4 and The collar 33 blocks the gap between the sensing unit 4 and the collar 33.

Referring to Figures 3 and 5, the collar 33 has a set placed in the sleeve a flange portion 331 of the flange 32, a main body portion 332 extending from the flange portion 331 toward the rocker arm 21, and a plurality of flange portions 331 extending from the flange portion 331 toward the rocker arm 21 at a distance from the main body portion 332 The elastic hook portion 334 has a plurality of latching grooves 333 extending along the longitudinal direction of the rear wheel axle 222. The magnetic member 34 has a plurality of ribs 341 corresponding to the card slots 333 , and the elastic hook portions 334 are hooked on the magnetic members 34 .

Referring to FIGS. 3 and 4, the sensing unit 4 includes a housing 41 disposed between the rocker arm 21 and the rear wheel 22 corresponding to the magnetic ring base 31, and covering the magnetic ring base 31 and the magnetic member 34. An inductive component 42 disposed in the housing 41 to sense the magnetic member 34, a first bearing 43 disposed in the housing 41, and a signal line 44 connecting the inductive component 42 and passing through the central aperture 231. The housing 41 has a positioning protrusion 411 corresponding to the positioning slot 211 of the rocker arm 21, and the rocker arm 21 further has a limiting member 212 for positioning and guiding the signal line 44. The sleeve 5 is placed on the rear axle 222 and the two ends abut against the second bearing 221 and the first bearing 43 respectively. In the preferred embodiment, the sensing component 42 is a Hall element, and the limiting component 212 is a hook for positioning and guiding the signal line 44 along the rocker arm 21.

The rear axle 222 is disposed to the second bearing 221, the bushing 5, the first bearing 43, the sleeve 32 and the rear rim 223 to pivot relative to the rocker arm 21 and the outer casing 41 to drive the rear The rim 223 is rotated, and the protrusion 321 which can be inserted into the insertion hole 224 can ensure that the sleeve 32, the collar 33 and the magnetic member 34 can rotate synchronously with the rear rim 223 without slipping. The card slot 333 of the collar 33 and the rib 341 of the magnetic member 34 are engaged It can be ensured that the collar 33 and the magnetic member 34 can rotate synchronously without slipping, and the elastic hook portion 334 can prevent the collar 33 from being axially separated from the magnetic member 34.

The housing 41 corresponding to the positioning protrusion 411 of the rocker arm 21 can ensure that the housing 41 does not rotate with the rear axle 222, so that the sensing element 42 can sense the magnetic property of the magnetic member 34. The rotational speed of the rear wheel 22 is measured, and the signal line 44 is output to an electronic control unit (ECU) (not shown) to obtain the wheel speed of the rear wheel 22.

In summary, in the wheel speed sensing device of the locomotive of the present invention, the rotating unit 3 and the sensing unit 4 are disposed between the rocker arm 21 and the rear wheel 22, and not only the wheel speed of the rear wheel 22 but also the wheel speed of the rear wheel 22 can be measured. The space between the rocker arm 21 and the rear wheel 22 can be fully utilized, and the influence of the high temperature exhaust pipe can be avoided to improve the service life and the sensing accuracy, and the rocker arm 21 and the rear wheel 22 are not required to be extra. The processing can reduce the processing cost, the weight and the volume increase, and the design and assembly can be simplified, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

2‧‧‧ locomotive

21‧‧‧ rocker arm

211‧‧‧ positioning slot

212‧‧‧Limited parts

22‧‧‧ rear wheel

221‧‧‧second bearing

222‧‧‧ Rear axle

223‧‧‧Rear rim

224‧‧‧ jack

225‧‧‧Support column

23‧‧‧煞盘盘

231‧‧‧Central hole

3‧‧‧Rotating unit

31‧‧‧ magnetic ring seat

32‧‧‧Sleeve

321‧‧‧Bump

33‧‧‧ collar

331‧‧‧Flange

332‧‧‧ Body Department

334‧‧‧Flexible hook

34‧‧‧Magnetic parts

4‧‧‧Sensor unit

41‧‧‧ Shell

411‧‧‧ positioning bumps

42‧‧‧Inductive components

43‧‧‧First bearing

44‧‧‧Signal line

5‧‧‧ Bushing

6‧‧‧Blocks

Claims (7)

A wheel speed sensing device for a locomotive, the locomotive comprising a rocker arm, a rear wheel pivoted on the rocker arm, and a brake disc having a rear axle pivoted to the rocker arm, a setting a rear rim on the rear axle, and a plurality of support columns extending from the rear rim toward the rocker arm, the brake disc is locked on the support column and forms a central hole, the wheel speed The sensing device comprises: a rotating unit, comprising a magnetic ring seat disposed between the rocker arm and the rear wheel and rotatable with the rear wheel, and a magnetic member disposed on the magnetic ring seat, wherein the magnetic ring The seat has a sleeve disposed on the rear axle for rotation with the rear axle, and a sleeve disposed on the sleeve and made of a non-magnetic material, the magnetic member being ringed on the collar The rocker arm has a limiting member: and a sensing unit, including a housing corresponding to the magnetic ring seat disposed between the rocker arm and the rear wheel and covering the magnetic ring seat and the magnetic member, and a setting The housing is configured to sense the sensing element of the magnetic member, and a connecting the sensing element and passing the brake disc Signal lines of the central bore, the housing is not rotated with the ring holder, the signal wire is positioned by the guide stopper member of the swing arm. The wheel speed sensing device of the locomotive according to claim 1, wherein the collar has a sleeve portion disposed on the sleeve, a body portion extending from the flange portion toward the rocker arm, and a plurality of An elastic hook portion extending from the flange portion toward the rocker arm at a distance from the body portion, and the body portion has The plurality of card slots extending along the length of the rear axle, the magnetic member has a plurality of ribs corresponding to the card slots, and the elastic hook portion is hooked to the magnetic member. A wheel speed sensing device for a locomotive according to claim 1, wherein the rear rim has a plurality of insertion holes, and the sleeve has a plurality of bosses that are correspondingly inserted into the insertion holes. The wheel speed sensing device of the locomotive of claim 1, wherein the sensing unit further comprises a first bearing disposed in the outer casing, the rear axle being disposed to rotate relative to the outer casing. The wheel speed sensing device of the locomotive of claim 1, wherein the rocker arm is formed with a positioning groove facing the rear wheel direction, and the outer casing of the sensing unit has a positioning protrusion corresponding to the positioning groove. . The wheel speed sensing device of the locomotive of claim 4, wherein the rear wheel further has a second bearing disposed in the rocker arm, the wheel speed sensing device further comprising a set of the rear axle and the two ends respectively Abutting against the bushing of the second bearing and the first bearing, and a sealing member disposed between the outer casing and the sleeve to block a gap between the outer casing and the sleeve, the rear axle is pierced The second bearing, the bushing, the first bearing, the sleeve and the rear rim. The wheel speed sensing device of the locomotive of claim 1, wherein the magnetic ring seat and the magnetic member of the rotating unit, and the outer casing and the sensing element of the sensing unit are located between the support columns.