CN216209233U

CN216209233U - Hall speed sensor compatible with existing mounting interface of vehicle shaft end

Info

Publication number: CN216209233U
Application number: CN202122624272.7U
Authority: CN
Inventors: 刘建林; 李克; 孟年禹; 郑骤
Original assignee: HUNAN XIANGYI RAILROAD LOCOMOTIVE ELECTRICAL EQUIPMENT CO Ltd
Current assignee: HUNAN XIANGYI RAILROAD LOCOMOTIVE ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The Hall speed sensor comprises a shell and an upper cover which are matched, wherein a Hall device and a moving element are arranged in the shell, the Hall device comprises an induction element, the moving element is a magnetic conduction code disc, the induction element is arranged above one side surface of the magnetic conduction code disc and close to the magnetic conduction code disc, the magnetic conduction code disc is integrally in a circular ring shape, a plurality of magnetic conduction holes are uniformly formed in the periphery of the magnetic conduction code disc, and the magnetic conduction holes are through holes which are all sealed. The magnetic conduction coded disc is adopted to replace the traditional gear, so that the diameter of the Hall sensor can be greatly reduced, the size and the quality are further reduced, the installation and the maintenance are convenient, and the service life of the sensor is prolonged.

Description

Hall speed sensor compatible with existing mounting interface of vehicle shaft end

Technical Field

The utility model relates to a speed sensor, in particular to a Hall speed sensor which is compatible with the existing installation interface of a vehicle shaft end and used for replacing the existing photoelectric speed sensor.

Background

In the running process of a train, the current running speed must be accurately acquired, and a photoelectric rotating speed sensor detection mode is generally used at present; in the detection mode of the photoelectric rotating speed sensor, the photoelectric sensor is arranged at the end of a locomotive axle, and an electric signal is generated by utilizing the principle of photoelectric conversion to measure the speed of the locomotive. However, the photoelectric sensor has high requirement on dust prevention, a light-transmitting gap is required to be reserved, the motor train unit cannot be completely sealed, in the running process of the motor train, the vibration of a wheel set bearing is large, the electromagnetic interference is large, the photoelectric rotating speed sensor works in the environment of vibration, impact and interference for a long time, so that the sensor signal is seriously influenced, the fault is easy to occur, the phenomena of no signal, loss, out-of-phase difference and the like of a channel exist, the reliability of the motor train unit is greatly reduced, the speed measurement requirement of the existing motor train unit, particularly a high-speed motor of the motor train unit, cannot be met, and therefore the existing photoelectric sensor on the motor needs to be replaced into other detection modes with high accuracy and low fault rate. As in the applicant's previously published patent applications for invention: CN201710197367.0, a method and a device for outputting a locomotive speed signal shaft end, which adopt a conventional Hall sensor to replace a photoelectric sensor for speed measurement. However, the hall sensor adopts a gear to move synchronously with the wheel, and the diameter of the hall sensor is much larger than that of a grating disc of a photoelectric sensor under the condition that the output pulse number is the same, so that the volume and the mass of the whole speed sensor are large, and further the vibration and the bearing abrasion are large.

SUMMERY OF THE UTILITY MODEL

The utility model provides a Hall speed sensor compatible with the existing mounting interface at the axle end of a vehicle, which aims to solve the problems that the volume and the mass of the Hall speed sensor used for replacing a photoelectric speed sensor are too large, so that the installation and the maintenance are inconvenient, the abrasion is large and the service life is short under the condition that the current interface is not changed, and the volume and the mass of the whole sensor are greatly reduced.

The technical means adopted by the utility model to solve the problems are as follows: the Hall speed sensor comprises a shell and an upper cover which are matched, wherein a Hall device and a moving element are arranged in the shell, the Hall device comprises an induction element, the moving element is a magnetic conduction code disc, the induction element is arranged above one side surface of the magnetic conduction code disc and close to the magnetic conduction code disc, the magnetic conduction code disc is integrally in a circular ring shape, a plurality of magnetic conduction holes are uniformly formed in the periphery of the magnetic conduction code disc, and the magnetic conduction holes are through holes which are all sealed.

Further, the shell is provided with a mounting hole connected with the axle box end cover, a connecting hole for the connecting shaft to pass through, and a cable port for the cable to pass through, and the cable is communicated to the sensing element and extends out of the cable port.

Furthermore, the middle of the shell is concave, a boss is arranged in the middle of the concave, the magnetic conduction code disc is arranged at the top of the boss, and the rotating shaft is connected with the connecting shaft, then penetrates through the boss and is connected to the magnetic conduction code disc.

Furthermore, a fan-shaped assembly hole is formed in the middle of the magnetic conduction coded disc, and the gland penetrates through the assembly hole to connect the magnetic conduction coded disc with the rotating shaft.

Furthermore, the Hall device also comprises a module box and a circuit board, wherein one end of the circuit board is connected with the sensing element, the other end of the circuit board is connected with the cable, the module box is fixed on the side wall of the boss, and the circuit board and the sensing element are packaged into a whole.

Furthermore, one module box of one Hall device is provided, two induction elements are provided, one or two circuit boards output a dual-channel signal, and when one circuit board is provided, the two induction elements are connected with one circuit board; when the circuit boards are two, the two sensing elements are respectively connected with one circuit board.

Furthermore, a pressing plate is further arranged at the position, located at the cable port, in the shell, and the cable is positioned in the shell through the pressing plate.

Further, the hall speed sensor comprises one, two or three hall devices, and outputs two-channel, four-channel or six-channel signals.

Furthermore, the boss is in a square shape as a whole, one side wall of the boss corresponds to the cable port, and the Hall device is arranged on the wall opposite to or adjacent to the side wall of the boss opposite to the cable port.

The utility model has the beneficial effects that:

1. the magnetic conduction coded disc is adopted to replace the traditional gear, so that the diameter of the Hall sensor can be greatly reduced, the size and the quality are further reduced, the installation and the maintenance are convenient, and the service life of the sensor is prolonged.

2. The magnetic conduction holes of the magnetic conduction coded disc are arranged into through holes with the periphery closed, so that the magnetic conduction coded disc can be made into a shape with a small thin thickness and a small diameter, and the size and the mass of the sensor are further reduced.

3. The inductive element of the utility model is arranged above one side surface of the magnetic conduction code disc, and is not arranged at the outer periphery of the side surface like the traditional Hall sensor using gears, so that the Hall device can be arranged in the shell instead of the shell, and the volume and the mass of the sensor are reduced again.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a Hall velocity sensor according to an embodiment;

FIG. 2 is a schematic structural view of FIG. 1 with the upper cover removed;

FIG. 3 is a schematic diagram of an internal structure of a Hall velocity sensor according to an embodiment;

FIG. 4 is a schematic view of the cartridge of FIG. 3 with the cartridge removed;

FIG. 5 is a schematic diagram of a magnetic encoding disk structure according to an embodiment;

FIG. 6 is a schematic view of a cartridge according to an embodiment;

FIG. 7 is a schematic structural diagram of a housing according to an embodiment;

in the figure: 1. the novel magnetic encoder comprises a shell, 11 bosses, 12 pressing blocks, 13 mounting holes, 14 connecting holes, 15 cable ports, 2 upper covers, 3 connecting shafts, 4 cables, 5 Hall devices, 511 module boxes, 512 sensing elements, 513 circuit boards, 6 rotating shafts, 7 magnetic code discs, 71 assembling holes, 72 magnetic holes and 8 pressing covers.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example one

A Hall speed sensor compatible with an existing mounting interface at the shaft end of a vehicle is shown in figure 1, and the external structure of the Hall speed sensor comprises a shell 1, an upper cover 2, a connecting shaft 3 and a cable 4. Wherein, the connecting shaft 3 adopts a cardan shaft, and one end of the cardan shaft is connected with a moving shaft of a vehicle to transmit the synchronous rotation of wheels to the inside of the shell 1. The cable 4 extends from one of the four side walls of the housing 1, and outputs a pulse signal to the outside of the housing 1.

As shown in fig. 7, the housing 1 is provided with a mounting hole 13 for fixedly mounting with the axle box end cover, and the mounting hole 13 matches with the original screw hole of the axle box end cover; the middle of the shell 1 is provided with a connecting hole 14 for the connecting shaft 3 to pass through, and the side wall is provided with a cable port 15 for the cable 4 to pass through.

As shown in fig. 2-3, the surface of one end of the housing 1 opposite to the end cover of the axle box has a concave structure, the upper cover 2 is also concave, the housing 1 and the upper cover 2 form a closed space after being locked, the speed sensor further comprises a hall device 5, a rotating shaft 6 and a magnetic conduction code disc 7 which are arranged in the closed space, one end of the rotating shaft 6 is connected with the connecting shaft 3, the other end of the rotating shaft is connected to the magnetic conduction code disc 7, the rotation of the wheel is synchronously transmitted to the magnetic conduction code disc 7, the hall device 5 receives induction according to the rotation of the magnetic conduction code disc 7, generates a pulse signal, and outputs the signal to the speed sensor through the cable 4.

As shown in fig. 5, the magnetic code disc 7 is a circular ring sheet and is made of magnetic material, such as 45# steel. The middle of the magnetic conduction coded disc 7 is provided with a fan-shaped assembly hole 71, a plurality of magnetic conduction holes 72 are uniformly arranged on the periphery of the magnetic conduction coded disc, and each magnetic conduction hole 72 is a through hole with the periphery being closed. By adopting the magnetic conduction code disc 7 to replace a conventional gear, the magnetic conduction code disc 7 can be made into a shape with small thickness and diameter, and the occupied space can be greatly reduced. Because the magnetic conduction code disc 7 has no teeth communicated with the outside, the magnetic conduction hole 72 in the shape of a through hole is adopted, so that the shape of the magnetic conduction code disc is similar to that of a grating disc.

As shown in fig. 4 and 6, the hall device 5 includes a module case 511, an inductive element 512 and a circuit board 513, the module case 511 encapsulates the inductive element 512 and the circuit board 513 into a whole and fixes them, one end of the circuit board 513 is connected with the inductive element 512 through a cable, and another cable is connected with the other end of the circuit board 513 and then extends out of the module case 511 to be connected to the cable 4 outside the housing 1.

As shown in FIG. 4, the sensing element 512 is fixed above one side of the magnetic code disc 7 and close to the magnetic code disc 7, instead of fixing the sensing element 512 at the circumferential position of the gear like a conventional Hall sensor, therefore, the structure can greatly reduce the diameter of the sensor and save space.

In order to conveniently fix the hall device 5 in the casing 1 and ensure the relative stability and the proper position between the sensing element 1 and the magnetic coded disc 7, a boss 11 which is in a square shape as a whole is arranged in the middle of the concave structure of the casing 1, one side wall of the boss 11 is opposite to a cable port 15, the magnetic coded disc 7 is arranged at the top of the boss 11, a mounting hole 13 penetrates through the boss 11 all the time, a rotating shaft 6 (not shown in the figure) penetrates through the mounting hole 13, a gland 8 penetrates through an assembling hole 71 of the magnetic coded disc 7, and the magnetic coded disc 7 is connected with the rotating shaft 6 by the gland 8 so that the magnetic coded disc 7 and the rotating shaft 6 rotate synchronously. In this embodiment, there are one hall device 5, two sensing elements 512, and one circuit board 513, where the two sensing elements 512 are both connected to the circuit board 513 to output a dual-channel signal, and certainly, two circuit boards 513 may also be used, and each sensing element 512 is connected to one circuit board 513. Hall device 5 is fixed in a side of boss 11, and in order to make the cable that is connected with circuit board 513 can conveniently be connected to the outer cable 4 department of casing 1, be equipped with briquetting 12 in the space of casing 1 near cable mouth 15 one side, fixed and the direction to the inside cable inlet wire of casing 1, and at this moment, a Hall device 5 is fixed in any one of other three lateral walls of boss 11 department.

When a four-channel signal needs to be output, two groups of hall devices 5 can be arranged in the shell 1 and respectively fixed at two side walls of the boss 11, and the four sensing elements 512 all protrude above the magnetic coded disc 7. When six-channel signals need to be output, three groups of hall devices 5 can be arranged in the shell 1 and respectively fixed on three side walls of the boss 11.

The above embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should fall within the scope of the present invention, and the scope of the present invention should be defined by the claims.

Claims

1. The utility model provides a compatible hall speedtransmitter of current installation interface of vehicle axle head, includes matched with casing and upper cover, is equipped with hall device and moving element in the casing, and wherein hall device includes sensing element, its characterized in that: the motion element is a magnetic conduction code disc, the induction element is arranged above one side surface of the magnetic conduction code disc and close to the magnetic conduction code disc, the magnetic conduction code disc is integrally annular, a plurality of magnetic conduction holes are uniformly arranged at the periphery of the magnetic conduction code disc, and the magnetic conduction holes are through holes with the periphery being closed.

2. The hall speed sensor of claim 1 compatible with existing mounting interfaces on vehicle axle ends, wherein: the shell is provided with a mounting hole connected with the axle box end cover, a connecting hole for the connecting shaft to pass through, and a cable port for the cable to pass through, and the cable is communicated to the sensing element and extends out of the cable port.

3. The hall speed sensor of claim 1 compatible with existing mounting interfaces on vehicle axle ends, wherein: the middle of the shell is concave, a boss is arranged in the middle of the concave, the magnetic conduction code disc is arranged at the top of the boss, and the rotating shaft is connected with the connecting shaft, then penetrates through the boss and is connected to the magnetic conduction code disc.

4. The hall speed sensor of claim 1 compatible with existing mounting interfaces on vehicle axle ends, wherein: the middle of the magnetic conduction code disc is provided with a fan-shaped assembly hole, and the gland penetrates through the assembly hole to connect the magnetic conduction code disc with the rotating shaft.

5. The hall speed sensor of claim 3 compatible with existing mounting interfaces on vehicle axle ends, wherein: the Hall device further comprises a module box and a circuit board, one end of the circuit board is connected with the sensing element, the other end of the circuit board is connected with the cable, the module box is fixed on the side wall of the boss, and the circuit board and the sensing element are packaged into a whole.

6. The hall speed sensor of claim 5 which is compatible with existing mounting interfaces on the axle ends of vehicles, wherein: the circuit board is provided with two or two circuit boards, and outputs a double-channel signal; when the circuit boards are two, the two sensing elements are respectively connected with one circuit board.

7. The hall speed sensor of claim 1 compatible with existing mounting interfaces on vehicle axle ends, wherein: the position in the shell body, which is located at the cable port, is also provided with a pressing plate, and the cable is positioned in the shell body through the pressing plate.

8. The hall speed sensor of claim 1 compatible with existing mounting interfaces on vehicle axle ends, wherein: the Hall speed sensor comprises one, two or three Hall devices and outputs two-channel, four-channel or six-channel signals.

9. The hall speed sensor of claim 3 compatible with existing mounting interfaces on vehicle axle ends, wherein: the boss is integrally in a square shape, one side wall of the boss corresponds to the cable port, and the Hall device is arranged on the wall opposite to or adjacent to the side wall of the boss opposite to the cable port.