CN212228974U - Magnetoelectric speed measurement sensor for improving detection adaptability - Google Patents

Abstract

The utility model discloses an improve magnetoelectric tachometric transducer that detects adaptability relates to tachometric transducer technical field, aims at solving current magnetoelectric tachometric transducer and can only be applied to one or several kinds of rotors of limitation, and its measuring limitation is great, does not possess the technical problem of good adaptability, and its technical scheme main points are including casing, iron core, coil skeleton and coil lead wire, iron core and coil skeleton fixed connection are inside the casing, the iron core is fixed connection in the coil skeleton, the coil is around establishing on the lateral wall of coil skeleton, the coil lead wire extends to the casing outside; the one end that the casing was kept away from to the iron core is fixed with the magnet steel, the casing lateral wall is provided with and is used for fixing the screw thread on the object that awaits measuring with the casing, threaded connection has lock nut on the casing, the one end that the iron core was kept away from to the casing is provided with the connecting piece. The method has better adaptability and is suitable for various measuring environments.

Description

Magnetoelectric speed measurement sensor for improving detection adaptability

Technical Field

The utility model relates to a tacho sensor technical field, more specifically say, it relates to an improve magnetoelectric tacho sensor who detects adaptability.

Background

The magnetoelectric sensor converts the input motion speed into an induced potential in a coil and outputs the induced potential by utilizing the principle of electromagnetic induction. The sensor directly converts the mechanical energy of a measured object into an electric signal to be output, does not need an external power supply during working, and is a typical passive sensor. The output power of the sensor is large, so that the secondary instrument circuit is greatly simplified.

The prior Chinese patent with an authorization publication number of CN202230097U discloses a magnetoelectric rotating speed sensor, belonging to the technical field of magnetoelectric sensors. The coil of the sensor is sleeved on an iron core, coil frameworks are arranged at two ends of the coil, epoxy resin filling materials are arranged in a space between the iron core and an outer shell, a coil lead is connected with the coil through the coil frameworks, two ends of the coil lead are connected with a sensor lead, the other end of the sensor lead extends to the outside of the outer shell through a lead inner core, and a sealing ring is arranged in the space between the lead and the outer shell. Epoxy resin is filled in the outer shell, the explosion-proof standard reaches the explosion-proof level of dIIBT4, and the explosion-proof device can be used in various industrial occasions where flammable and explosive dangerous gases exist; the sensor lead is directly led out from the body, and the protection level reaches IP68 without the need of intermediate plug adapter.

However, the conventional magnetoelectric rotation speed sensor can only be applied to one or more limited rotors, has large measurement limitation and does not have good adaptability, and thus needs to be improved.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an improve magnetoelectric tacho sensor who detects adaptability, it has possesses better adaptability, is adapted to multiple measuring environment's advantage.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a magnetoelectric tachometric sensor for improving detection adaptability comprises a shell, an iron core, a coil framework and a coil lead, wherein the iron core and the coil framework are fixedly connected inside the shell, the iron core is fixedly connected in the coil framework, the coil is wound on the outer side wall of the coil framework, and the coil lead extends to the outside of the shell; the one end that the casing was kept away from to the iron core is fixed with the magnet steel, the casing lateral wall is provided with and is used for fixing the screw thread on the object that awaits measuring with the casing, threaded connection has lock nut on the casing, the one end that the iron core was kept away from to the casing is provided with the connecting piece.

By adopting the technical scheme, the speed measuring sensor with the magnetic steel can not only measure the speed of the rotor with magnetism, but also measure the speed of the rotor without magnetism; and casing threaded connection supports tightly fixedly through lock nut on the shell of the rotor that awaits measuring and has realized fixing tacho sensor on the rotor shell of different specifications to improve tacho sensor's detection adaptability, can be adapted to different types of rotors.

Furthermore, the shell is internally filled with sealant.

Through adopting above-mentioned technical scheme, sealed setting up not only can fix inside magnet steel of casing and coil etc. can also improve insulating properties between the wire and the inside leakproofness of casing, has guaranteed speed sensor's steady operation.

Furthermore, threaded connection has the end cap nut in the connecting piece, be provided with the butt piece that offsets with the connecting piece on the end cap nut lateral wall.

Through adopting above-mentioned technical scheme, the one end of connecting piece can be sealed on the one hand in setting up of end cap nut to it flows out from the casing when not solidifying to alleviate sealed glue effectively.

Furthermore, the coil lead is welded with a lead-out cable, one end of the lead-out cable is fixed inside the shell, and the other end of the lead-out cable is provided with a three-core plug.

Through adopting above-mentioned technical scheme, the outgoing cable can be drawn forth the voltage in the coil to the casing outside, and the setting of three-core plug is convenient for be connected outgoing cable and display device to in the rotational speed of demonstration rotor.

Further, the end part of the shell, which is far away from the three-core plug, is provided with an antirust coating.

Through adopting above-mentioned technical scheme, the antirust coating can protect the tip of casing, delays the corrosion of casing tip, still can not exert an influence to the conduction of magnetic force simultaneously to make the speed sensor can be applied to under the environment of humidity and non-humidity.

Further, the magnetic steel is a neodymium iron boron magnet.

Through adopting above-mentioned technical scheme, neodymium iron boron magnetism iron boron's heat resistance is higher, therefore it can be adapted to different temperature environment, has further improved speed sensor's adaptability.

Furthermore, a rotating block is sleeved on the locking nut, and a rotating flange is arranged on the outer side wall of the rotating block.

Through adopting above-mentioned technical scheme, the edge of a wing that rotates on the turning block is convenient for grip to be convenient for rotate the turning block that the cover was established on lock nut, and then be convenient for rotate lock nut and casing threaded connection.

Furthermore, an anti-slip groove is formed in the rotating flange.

Through adopting above-mentioned technical scheme, the setting up of anti-skidding recess has increased the coefficient of friction of rotating the edge of a wing lateral wall, and the operating personnel of being more convenient for grips.

To sum up, the utility model discloses following beneficial effect has:

1. the technology that the magnetic steel, the shell, the threads, the locking nut and the connecting piece are matched is adopted, so that the effect of improving the adaptability of the speed measuring sensor is achieved;

2. the technology that the connecting piece, the plug nut, the abutting block, the sealant, the lead-out cable and the three-core plug are matched is adopted, so that the effect of conveniently sealing the inside of the shell is achieved;

3. the technology that the locking nut, the rotating block, the rotating flange and the anti-skid groove are matched is adopted, so that the effect that the locking nut is convenient to rotate to achieve locking is achieved.

Drawings

Fig. 1 is a schematic structural diagram of an exemplary magnetoelectric tachometer sensor for improving detection adaptability;

fig. 2 is a schematic diagram for showing a connection structure of a lock nut and a rotating block in the embodiment.

In the figure: 1. a housing; 10. an antirust coating; 11. an iron core; 111. a coil; 112. a coil bobbin; 113. a coil lead; 12. magnetic steel; 13. a thread; 2. locking the nut; 20. a rubber block; 21. rotating the block; 211. rotating the flange; 212. an anti-slip groove; 3. a connecting member; 31. a plug nut; 311. a butting block; 4. leading out a cable; 41. a three-core plug.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

the utility model provides an improve magnetoelectric tacho transducer that detects adaptability, refer to fig. 1, it includes casing 1, iron core 11, coil 111, coil skeleton 112 and coil 111 lead wire, iron core 11 and coil skeleton 112 bonding fixed connection are inside casing 1, and iron core 11 bonding fixed connection is in coil skeleton 112, and coil 111 winds and establishes on the lateral wall of coil skeleton 112, and coil 111 lead wire extends to the casing 1 outside.

Referring to fig. 1, one end of the iron core 11, which is far away from the casing 1, is bonded and fixed with a magnetic steel 12, and the magnetic steel 12 is a cylindrical neodymium iron boron magnet, so that the speed sensor can not only be applicable to a rotor with magnetism, but also be applicable to a rotor without magnetism. The outer side wall of the shell 1 is tapped with threads 13 used for fixing the shell 1 on an object to be measured, the threads 13 on the shell 1 are connected with a locking nut 2, and the cross section of the locking nut 2 in the thickness direction is hexagonal.

Referring to fig. 1 and 2, a rotating block 21 is sleeved on the locking nut 2, a clamping groove matched with the locking nut 2 is formed in the rotating block 21, and the clamping groove penetrates through the rotating block 21 in the thickness direction. The outer side wall of the locking nut 2 is fixedly embedded with a rubber block 20, and the rubber block 20 enables the rotating block 21 to be sleeved on the outer side wall of the locking nut 2 in an interference fit manner.

Referring to fig. 1 and 2, the outer side wall of the rotating block 21 is integrally formed with two rotating flanges 211, and the two rotating flanges 211 are symmetrically arranged along the radial direction of the rotating block 21. The rotating flange 211 is provided with an anti-skid groove 212; the slip prevention grooves 212 extend in the width direction of the rotation flange 211 and are uniformly arranged in plural in the length direction. The shell 1 is connected with a thread 13 hole thread 13 on the shell of the rotor to be tested and is connected with the shell through a locking nut 2 and the thread 13 of the shell 1 to be tightly propped and fixed.

Referring to fig. 1, a connecting piece 3 is arranged at one end of a shell 1 far away from an iron core 11, and a cylindrical hollow hexagonal prism is reserved in the connecting piece 3; one end of the connecting piece 3 is embedded in the shell 1 and is fixedly bonded, the other end of the connecting piece is connected with the plug nut 31 through threads 13, the abutting block 311 which abuts against the connecting piece 3 is integrally formed on the outer side wall of the plug nut 31, and the plug nut 31 and the connecting piece 3 are fixedly bonded.

Referring to fig. 1, the casing 1 is filled with a sealant, which is KD-504 glue, and on one hand, the coil 111 and the magnetic steel 12 inside the casing 1 can be fixed, and on the other hand, the waterproof and insulating properties inside the casing 1 can be improved.

Referring to fig. 1, a lead wire of a coil 111 is welded with a lead-out cable 4, and the lead-out cable 4 is electrically connected with the coil 111; one end of the outgoing cable 4 is fixed inside the casing 1, and the other end is electrically connected with a three-pin plug 41, wherein the three-pin plug 41 is used for connecting the outgoing cable 4 to the display device.

Referring to fig. 1, the end of the housing 1 away from the three-pin plug 41 is coated with the rust-proof coating 10, and the rust-proof coating 10 is formed by acrylic coating, has a smooth surface, delays rusting, and does not affect the conduction of magnetic force.

The working principle is as follows:

before testing the rotor rotating speed, the speed measuring sensor needs to be installed on the shell of the rotor in advance, firstly, the shell 1 is connected with the screw hole which is formed in advance in a threaded mode, then the rotating block 21 is sleeved on the locking nut 2, the locking nut 2 rotates to abut against the shell, and therefore fixing of the speed measuring device is completed.

Because the magnetic steel 12 is arranged in the shell 1, the velometer can be suitable for magnetic rotors and non-magnetic rotors. In the process of rotor rotation, voltage is induced in the coil 111, and the change of the voltage in the coil 111 is monitored through the lead-out cable 4, so that the rotating speed of the coil 111 can be detected. Due to the arrangement of the magnetic steel 12, the speed measuring sensor can be suitable for a magnetic rotor and a non-magnetic rotor; due to the arrangement of the antirust coating 10, the speed measuring sensor can adapt to a humid environment and a non-humid environment; because casing 1 threaded connection supports tightly fixedly through lock nut 2 on the rotor housing, therefore can be adapted to the rotor of equidimension not, so improved speed sensor's adaptability greatly.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. The magnetoelectric speed measurement sensor capable of improving detection adaptability comprises a shell (1), an iron core (11), a coil (111) framework and a coil (111) lead, wherein the iron core (11) and the coil framework (112) are fixedly connected inside the shell (1), the iron core (11) is fixedly connected into the coil framework (112), the coil (111) is wound on the outer side wall of the coil framework (112), and the coil (111) lead extends to the outside of the shell (1); the method is characterized in that: the one end that casing (1) was kept away from in iron core (11) is fixed with magnet steel (12), casing (1) lateral wall is provided with and is used for fixing screw thread (13) on the object that awaits measuring with casing (1), screw thread (13) are connected with lock nut (2) on casing (1), the one end that iron core (11) were kept away from in casing (1) is provided with connecting piece (3).

2. The magnetoelectric tachometer sensor of claim 1, wherein: and sealant is poured into the shell (1).

3. The magnetoelectric tachometer sensor of claim 2, wherein: the connecting piece (3) middle thread (13) is connected with a plug nut (31), and the outer side wall of the plug nut (31) is provided with a butt joint block (311) which is abutted against the connecting piece (3).

4. The magnetoelectric tachometer sensor of claim 1, wherein: the lead welding of coil (111) has lead cable (4), lead cable (4) one end is fixed inside casing (1), and the other end is provided with three-core plug (41).

5. The magnetoelectric tachometer sensor of claim 4, wherein: the end part of the shell (1) far away from the three-core plug (41) is provided with an antirust coating (10).

6. The magnetoelectric tachometer sensor of claim 1, wherein: the magnetic steel (12) is a neodymium iron boron magnet.

7. The magnetoelectric tachometer sensor of claim 1, wherein: the locking nut (2) is sleeved with a rotating block (21), and a rotating flange (211) is arranged on the outer side wall of the rotating block (21).

8. The magnetoelectric tachometer sensor of claim 7, wherein: and an anti-skid groove (212) is formed in the rotating flange (211).

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