CN211955536U

CN211955536U - Motor rotating speed measuring instrument

Info

Publication number: CN211955536U
Application number: CN201922370027.0U
Authority: CN
Inventors: 王超; 卓世锋; 张文贤; 朱文轩
Original assignee: Shenzhen University
Current assignee: Shenzhen University
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-11-17
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a motor speed measuring apparatu, including being used for fixed connection at the epaxial magnet carrier of rotation of motor, fixed setting is in the magnet carrier and follow the magnet that the axis of rotation symmetry of motor was arranged runs through the magnet carrier just is located the last inductor fixed station of the symmetry axis of magnet, the inductor fixed station is used for dismantling and connects the inductor and make the inductor be located in the magnetic field that magnet formed. The magnetic field around the graphene sensor is driven to rotate, the graphene sensor in the magnetic field with rotary change induces magnetic change to measure the rotating speed of the motor, and the real-time rotating speed of the motor is accurately measured and monitored.

Description

Motor rotating speed measuring instrument

Technical Field

The utility model relates to a speed sensor field especially relates to a motor speed measuring instrument.

Background

There are three major types of magnetic sensors commercially available for measuring the rotational speed of a motor, hall effect type, magnetoresistance effect type, and anisotropic magnetoresistance effect type, but the three major types of magnetic sensors are mainly made of magnetic alloys and rare earth semiconductors.

However, no sensing instrument for measuring the rotating speed of the motor by utilizing the graphene spin enhancement effect is sold in the market, and no relevant equipment exists for manufacturing a speed measurement sensor of the motor by utilizing the graphene material spin enhancement through the magnetic effect. The principle of spin enhancement of the magnetic effect of graphene materials: the deposition of the graphene nanocrystalline carbon film on the substrate by ECR is provided with the hall effect at room temperature, i.e., is sensitive to a magnetic field.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of above-mentioned prior art not enough, the utility model aims at providing a motor speed measuring apparatu aims at being used for having the measuring apparatu of hall effect sensor preparation, especially through graphite alkene sensor's spin reinforcing effect, rotates through driving the peripheral magnetic field of graphite alkene sensor, and the graphite alkene sensor response magnetism in the magnetic field of rotatory change changes measures motor speed, measures the real-time rotational speed with the control motor accurately.

The technical scheme of the utility model as follows:

the utility model provides a motor speed measuring apparatu, wherein, is including being used for fixed connection at the epaxial magnet carrier of rotation of motor, fixed setting in the magnet carrier and along the axis of rotation symmetry of motor arranges the magnet, run through the magnet carrier and be located the inductor fixed station on the axis of symmetry of magnet, the inductor fixed station is used for dismantling to connect the inductor and makes the inductor be located in the magnetic field that magnet formed.

Further, the magnet carrier comprises a magnet mounting plate, wherein the surface of the magnet mounting plate facing the motor is provided with an induction positioning hole, and two sides of the induction positioning hole, which are axially symmetrical, are respectively provided with a magnet mounting groove;

the inductor fixing table is located in the induction positioning hole, and the magnet is located in the magnet mounting groove.

Further, threaded holes are respectively formed in the two ends of the magnet mounting plate, the threaded holes penetrate through the magnet mounting groove, fixing screws are connected in the threaded holes in the side face, and the tail ends of the fixing screws are abutted to and fixed with the magnets.

Further, the magnet carrier is still including the connecting plate that is located the both ends of magnet mounting panel and fixes the setting respectively, and fixedly connected with carrier put on the shelf between the connecting plate at both ends, carrier put on the shelf fixed connection the axis of rotation of motor.

Furthermore, the carrier upper frame is fixed with a rotating shaft of the motor through a step shaft, one end of the step shaft is fixedly connected to the carrier upper frame, and the other end of the step shaft is fixedly connected with the motor;

the test device is characterized by further comprising a test support, wherein the step shaft is rotatably arranged on the test support.

Further, the test support comprises a top plate, a flange bearing is embedded on the top plate in a clamping mode, and the step shaft is embedded in an inner ring of the flange bearing in a clamping mode and penetrates through the top plate.

Further, a collar is arranged at one end, close to the motor, of the step shaft, a thrust needle roller bearing is sleeved on the step shaft, and the thrust needle roller bearing is located between the collar and the top plate; one end of the step shaft close to the motor is used for being fixedly connected with a rotating shaft of the motor through a coupler.

Further, the fixed motor mounting bracket that is provided with on the roof, motor mounting bracket centers on the step axle, motor mounting bracket is used for supporting the motor the last fixed motor mount that is provided with of motor mounting bracket, the motor mount is used for wrapping up the motor and fixes the motor.

Further, the test support still includes the base, the base with carry out fixed connection through a supporting beam between the roof, a supporting beam is provided with three, three supporting beams are triangular distribution.

Further, an inductor mounting table is fixedly arranged on the base, and the inductor fixing table is inserted into the inductor mounting table.

Compared with the prior art, the utility model provides a motor speed measuring apparatu, it is motionless through the fixed inductor of inductor fixed station, the motor that awaits measuring drives the magnet rotation on the magnet carrier, and produces the magnetic field of angle periodic variation, thereby the inductor detects the change cycle in angle periodic variation's magnetic field and calculates the rotational speed of the measured motor that provides power, especially uses graphite alkene inductor, through the magnetic field of applying periodic variation on graphite alkene inductor, arouse graphite alkene material's spin reinforcing magnetic effect, measure and monitor the real-time rotational speed of motor more accurately.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a motor rotation speed measuring instrument according to the present invention;

fig. 2 is a cross-sectional view of an embodiment of the motor speed measuring instrument of the present invention;

fig. 3 is an exploded view of an embodiment of the motor rotation speed measuring instrument according to the present invention;

the reference numbers in the figures: 100. a magnet carrier; 110. a magnet mounting plate; 111. sensing the positioning hole; 112. a magnet mounting groove; 113. side threaded holes; 120. a connecting plate; 130. putting the carrier on a frame; 131. a square groove; 132. locking the screw; 140. a chute; 150. a slider; 200. a magnet; 300. a sensor fixing table; 400. testing the bracket; 410. a base; 420. a top plate; 430. a support beam; 431. a support bar; 432. an upper support table; 433. a lower support table; 500. a sensor mounting table; 600. a flange bearing; 610. a step shaft; 611. a collar; 612. a square head end; 620. a thrust needle bearing; 700. a motor mounting bracket; 710. motor mount.

Detailed Description

The utility model provides a motor speed measuring apparatu, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following reference drawing and example are lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the utility model provides a motor speed measuring instrument for hall effect inductor, especially graphite alkene inductor measure the rotational speed, include with motor (not drawn in the figure) fixed connection and with motor synchronous rotation's magnet carrier 100, the motor is the motor of being surveyed be provided with a plurality of magnet 200 in the magnet carrier 100, it is a plurality of magnet 200 is followed the axis of rotation symmetry of motor is arranged, makes the magnetic induction line in the magnetic field that magnet 200 formed with the axis of rotation of motor is perpendicular. An inductor fixing base 300 is disposed on the magnet carrier 100 in a penetrating manner, the inductor fixing base 300 is located on a symmetry axis of the magnet 200, the inductor fixing base 300 is used for detachably connecting an inductor (not shown in the drawings), in this embodiment, the inductor is a graphene inductor, and the inductor is located in a magnetic field formed by the magnet 200, so that the inductor is located on the rotation axis. The sensor can also be other Hall effect sensors and can also be used for motor testing. Therefore, the magnet carrier 100 rotates, the sensor fixing base 300 is fixed, and the magnetic field generated by the magnet 200 of the magnet carrier 100 generates a magnetic field whose angle periodically changes due to the rotation of the magnet carrier 100.

The inductor in the scheme detects the change period of the magnetic field in the magnetic field with the angle period changing, so that the rotating speed of the detected motor for providing power is calculated, and particularly the graphene inductor is used. By applying a periodically-changing magnetic field to the graphene inductor, the spin-enhanced magnetic effect of the graphene material is caused, and the real-time rotating speed of the motor is measured and monitored more accurately.

As shown in fig. 1 and fig. 2, the specific structure of the present embodiment is: including test support 400, test support 400 sets up along vertical direction, test support 400 is used for supporting whole measuring apparatu structure, test support 400 includes base 410, is located the roof 420 of base 410 top, be provided with a plurality of supporting beam 430 between base 410 and the roof 420, realize supporting through supporting beam 430, the supporting beam 430 that sets up in this embodiment has three, and three supporting beam 430 are triangle-shaped and distribute, specifically can be equilateral triangle-shaped and distribute, base 410 with roof 420 also all adopts triangular plate, like this under the restriction of mutual structure, makes the measuring apparatu exterior structure very stable when the operation, has solved the motor and has leaded to the unstable problem in magnetic field owing to rocking when the operation.

The inductor installation table 500 is fixedly arranged on the base 410 along the vertical direction, a fixed table positioning hole (not marked in the drawing) is formed in the inductor installation table 500, and the inductor fixed table 300 is inserted into the fixed table positioning hole, so that the inductor fixed table 300 and the inductor installation table 500 are fixed and connected in a plugging and unplugging mode, and the inductor is convenient to install and detach.

As shown in fig. 2 and 3, a through hole is formed in the top plate 420, the through hole is located in the center of the top plate 420, a flange bearing 600 is inserted into the through hole, a step shaft 610 is inserted into an inner ring of the flange bearing 600, the step shaft 610 penetrates through the top plate 420, one end of the step shaft 610 is located above the top plate 420, the other end of the step shaft 610 is located below the top plate 420, and one end of the step shaft 610 located on the top plate 420 is used for fixedly connecting a motor, namely, a motor to be measured, through a shaft coupling (not shown in the drawing). The concrete structure does be provided with motor mounting bracket 700 through the fix with screw on the roof 420, motor mounting bracket 700 centers on step axle 610, motor mounting bracket 700 is used for supporting the motor be provided with motor mount 710 through the fix with screw on the motor mounting bracket 700, motor mount 710 is used for wrapping up the motor and fixes the motor, and like this, the motor that awaits measuring can directly be placed in motor mount 710, and the rethread shaft coupling is fixed with the upper end of step axle 610, and motor mount 710 inlay card motor has solved self shake when the motor rotates and has leaded to the unstable problem in magnetic field.

A collar 611 is arranged at one end of the step shaft 610 close to the motor, a thrust needle roller bearing 620 is sleeved on the step shaft 610, and the thrust needle roller bearing 620 is positioned between the collar 611 and the top plate 420; the step shaft 610 is fixed on the top plate 420 through the thrust needle bearing 620 and the flange bearing 600, and the thrust needle bearing 620 can prevent shaking of the step shaft 610 in the transmission process, so that the problem of unstable magnetic field caused by shaking of the step shaft 610 in the transmission process is avoided.

The lower end of the step shaft 610 is fixedly connected to the magnet carrier 100, and the connection position is located at the center of the magnet carrier 100 in this embodiment. The magnet carrier 100 comprises a magnet mounting plate 110, connecting plates 120 positioned at two ends of the magnet mounting plate 110, and a carrier upper frame 130 which is positioned between the connecting plates 120 at the two ends and is fixedly connected to the two connecting plates 120; the connecting plate 120 is arranged along the vertical direction, the carrier upper frame 130 is fixedly connected with the step shaft 610, specifically, the tail end of the step shaft 610 is provided with a square head end 612, the carrier upper frame 130 is provided with a square groove 131 for clamping and embedding the square head end 612, the bottom surface of the square head end 612 of the step shaft 610 is provided with a threaded hole, and the step shaft 610 and the carrier upper frame 130 are fixed through the threaded connection of a locking screw 132.

The lower surface of the carrier upper frame 130 is provided with two sliding grooves 140 at two ends, the upper surfaces of the connecting plates 120 at two ends are respectively and fixedly provided with a sliding block 150, and the sliding block 150 can be directly pushed into the sliding grooves 140 to realize clamping and embedding fixation, so that the carrier upper frame 130 and the lower magnet mounting plate 110 can be conveniently mounted and dismounted.

An induction positioning hole 111 is formed in the surface (upper surface) of the magnet mounting plate 110 of the magnet carrier 100 facing the motor, and magnet mounting grooves 112 are respectively formed in two symmetrical sides of the induction positioning hole 111; the inductor fixing stage 300 is positioned in the induction positioning hole 111, the magnet installation groove 112 is square and extends toward both ends of the magnet installation plate 110, and the magnet 200 is positioned in the magnet installation groove 112. Thus, the inductors are arranged in the induction positioning holes 111, the magnets 200 are symmetrically arranged on two sides of the inductor, and the inductors are positioned at the rotating center position of the step shaft 610, so that the magnets 200 generate magnetic induction lines perpendicular to the rotating axis.

As shown in fig. 1 and 3, side threaded holes 113 are respectively opened at both ends of the magnet mounting plate 110, the side threaded holes 113 penetrate the magnet mounting groove 112, a fixing screw (not shown) is connected to the side threaded holes 113, and the end of the fixing screw abuts against and fixes the magnet 200. The fixing screw is a plastic screw, the tail end of the plastic screw is tightly abutted to the magnet 200 by screwing the plastic screw, so that the magnet 200 can be completely embedded in the magnet mounting groove 112, the magnet 200 is conveniently detached, the magnet 200 is fixed, and the problem that the magnetic field is unstable due to the shaking of the magnet 200 during rotation is solved. And the magnets 200 with different styles can be replaced according to the measurement requirements, so that the tests with different scales can be realized.

The utility model discloses a carrier upper bracket 130 goes up and opens spout 140, fixed connection is at the upper end slider 150 of connecting plate 120, and open at the both ends of magnet mounting panel 110 has side screw hole 113, through twisting plastics screw fixation magnet 200, plays the effect of conveniently dismantling magnet 200. The theoretical maximum magnetic field is increased by arranging the magnet 200 at both sides, with the axis (rotation axis) of the step shaft 610 being coaxial with the inductor fixing base 300 and the inductor, the inductor fixing base 300 passing through the induction positioning hole 111 of the magnet carrier 100, the induction positioning hole 111 also being provided at the center of the magnet carrier 100.

As shown in fig. 2, for the structural stability, the structure of the supporting beam 430 includes a supporting rod 431 vertically disposed, an upper supporting platform 432 located at the upper end of the supporting rod 431, and a lower supporting platform 433 located at the lower end of the supporting rod 431, the top plate 420 is fixed on the upper supporting platform 432 through screws, the upper supporting platform 432 supports the top plate, the base 410 is fixed below the lower supporting platform 433 through screws, and in order to stably place the base 410, the screw fixing positions are all set as counter bore structures.

To sum up, the utility model provides a motor speed measuring apparatu, it is motionless through the fixed inductor of inductor fixed station, the motor that awaits measuring drives the magnet rotation on the magnet carrier, and produce the magnetic field of angle periodic variation, thereby the inductor detects the change cycle in angle periodic variation's magnetic field and calculates the rotational speed of the measured motor that provides power, especially uses the graphite alkene inductor, through applying periodic variation's magnetic field on the graphite alkene inductor, arouse the spin reinforcing magnetic effect of graphite alkene material, measure and monitor the real-time rotational speed of motor more accurately.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A motor rotating speed measuring instrument is characterized by comprising a magnet carrier, magnets and an inductor fixing table, wherein the magnet carrier is fixedly connected to a rotating shaft of a motor, the magnets are fixedly arranged in the magnet carrier and are symmetrically arranged along the rotating shaft of the motor, the inductor fixing table penetrates through the magnet carrier and is positioned on the symmetric axis of the magnets, and the inductor fixing table is detachably connected with an inductor and enables the inductor to be positioned in a magnetic field formed by the magnets; the inductor is a graphene inductor.

2. The motor rotation speed measuring instrument according to claim 1, wherein the magnet carrier includes a magnet mounting plate, an induction positioning hole is formed on a surface of the magnet mounting plate facing the motor, and magnet mounting grooves are respectively formed on two sides of the induction positioning hole, which are axisymmetrical;

3. The motor rotation speed measuring instrument according to claim 2, wherein lateral threaded holes are respectively formed in two ends of the magnet mounting plate, the lateral threaded holes penetrate through the magnet mounting groove, fixing screws are connected in the lateral threaded holes, and ends of the fixing screws abut against and fix the magnets.

4. The motor rotation speed measuring instrument according to claim 2, wherein the magnet carrier further comprises connecting plates fixedly disposed at two ends of the magnet mounting plate, respectively, and a carrier upper frame is fixedly connected between the connecting plates at the two ends and fixedly connected to the rotating shaft of the motor.

5. The motor rotation speed measuring instrument according to claim 4, wherein the carrier upper frame is connected to a rotation shaft of the motor through a step shaft, one end of the step shaft is fixedly connected to the carrier upper frame, and the other end of the step shaft is fixedly connected to the rotation shaft of the motor;

6. The motor speed measuring instrument according to claim 5, wherein the test bracket comprises a top plate, a flange bearing is embedded on the top plate, and the stepped shaft is embedded in an inner ring of the flange bearing and penetrates through the top plate.

7. The motor speed measuring instrument according to claim 6, wherein a collar is provided at an end of the step shaft close to the motor, and a needle thrust bearing is sleeved on the step shaft and located between the collar and the top plate; one end of the step shaft close to the motor is used for being fixedly connected with a rotating shaft of the motor through a coupler.

8. The motor speed measuring instrument according to claim 6, wherein a motor mounting bracket is fixedly arranged on the top plate, surrounds the step shaft, and is used for supporting the motor, and a motor fixing frame is fixedly arranged on the motor mounting bracket and is used for wrapping and fixing the motor.

9. The motor rotating speed measuring instrument according to claim 6, wherein the test support further comprises a base, the base is fixedly connected with the top plate through three support beams, and the three support beams are distributed in a triangular shape.

10. The motor rotation speed measuring instrument according to claim 9, wherein an inductor mounting table is fixedly arranged on the base, and the inductor fixing table is inserted on the inductor mounting table.