CN112994398B

CN112994398B - Strong electromagnetic vibrator

Info

Publication number: CN112994398B
Application number: CN202110253152.2A
Authority: CN
Inventors: 张文谦; 薛欢; 李靖
Original assignee: Hubei University of Technology
Current assignee: Hubei University of Technology
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2023-06-30
Anticipated expiration: 2041-03-04
Also published as: CN112994398A

Abstract

The present invention provides a powerful electromagnetic vibrator comprising: the vibration device comprises a base, a vibration body, an electromagnetic excitation device and a vibration head, wherein the vibration body is movably arranged in the base; the electromagnetic excitation device is arranged in the base at two sides of the vibration body; the vibrating head is fixedly arranged at the end part of the vibrating body and is positioned outside the base; when the superimposed magnetic field generated after the two electromagnetic excitation devices are electrified acts on the vibration body, the vibration body can drive the vibration head to do linear reciprocating motion. The invention adopts the coil and the reversible electromagnet to form the upper and lower groups of excitation devices, and the two groups of excitation devices cooperatively act on the middle permanent magnet to enable the middle permanent magnet to reciprocate up and down so as to drive the vibrating head to reciprocate up and down, and under the condition of the same electric energy consumption, the invention provides larger vibrating force than the conventional electromagnetic vibrator, thereby achieving the effect of reducing the energy consumption.

Description

Strong electromagnetic vibrator

Technical Field

The invention relates to the technical field of vibrators, in particular to a powerful electromagnetic vibrator.

Background

In many places, such as various mineral separation screening, leisure and recreation, vibration aging of mechanical parts, and the like, vibration screening is widely performed in a mechanical vibration mode to prepare mineral separation materials, vibration shaking gives comfortable leisure or massage, vibration excitation is performed on the mechanical parts to finish aging treatment, residual stress is eliminated, and the like. However, the traditional electromagnetic vibrator has the problems of too high energy consumption caused by insufficient electromagnetic bearing and thrust or too large electromagnetic coil.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention proposes a powerful electromagnetic vibrator comprising:

a base (1);

the vibration body (2) is movably arranged in the base (1);

the electromagnetic excitation device (3) is fixedly arranged in the base (1) at two sides of the vibration body (2);

the vibration head (4) is fixedly arranged at the end part of the vibration body (2);

when the superimposed magnetic fields generated after the two electromagnetic excitation devices (3) are electrified act on the vibration body (2), the vibration body (2) can drive the vibration head (4) to do linear reciprocating motion.

Further, the vibration body (2) comprises a vibration body (21), a permanent magnet (22) and a guide body (23), the vibration body (21) is fixedly sleeved in the middle of the guide body (23), the permanent magnet (22) is fixedly arranged on the vibration body (21), and the vibration head (4) is fixedly arranged at the end part of the guide body (23).

Further, the permanent magnet (22) is made of neodymium iron boron.

Further, the electromagnetic excitation device (3) comprises an installation framework (31) fixedly arranged in the base, a reversible electromagnet (34) arranged on the installation framework (31) and a coil (35) wound on the installation framework (31), wherein the installation framework (31) is positioned near the vibrating body (21), the reversible electromagnet (34) is positioned in the coil (35), and the coils (35) positioned at two sides of the vibrating body (21) are connected with currents in opposite directions.

Further, a reversible electromagnet mounting groove (32) and a coil winding space (33) arranged on the outer side of the reversible electromagnet mounting groove (32) are arranged on the mounting framework (31), the section of the coil winding space (33) is a rectangular annular section, and the coil is arranged in the coil winding space.

Further, the reversible electromagnet (34) is made of alnico.

Further, a buffer member (5) is provided between the vibration head (4) and the base (1).

The invention adopts the coil and the reversible electromagnet to form the upper and lower groups of exciting devices, the reversible electromagnet is a magnet which can change the magnetic pole direction along with the change of the current direction of the coil, the upper coil above the permanent magnet and the lower coil below the permanent magnet are connected with opposite current, the directions of the generated magnetic fields are opposite, meanwhile, the direction of the magnetic field generated by the reversible electromagnet corresponding to the upper coil is the same as the direction of the magnetic field generated by the upper coil through the excitation of the coil, the direction of the magnetic field generated by the reversible electromagnet corresponding to the lower coil is the same as the direction of the magnetic field generated by the lower coil, therefore, when one group of exciting devices generates electromagnetic attraction force to act on the middle permanent magnet, the other group of exciting devices generate electromagnetic pushing force with the same electromagnetic attraction force to act on the middle permanent magnet, and the two groups of exciting devices act on the middle permanent magnet in a synergistic way, so that the middle permanent magnet reciprocates up and down, and further, the vibrating head is driven to reciprocate up and down, under the condition of the same electric energy consumption, the vibrating device provides bigger vibrating force than the conventional electromagnetic vibrator, and achieves the effect of reducing energy consumption.

Drawings

Fig. 1 is a schematic view of a structure of a powerful electromagnetic vibrator with a vibrating head falling down;

fig. 2 is a schematic diagram of a structure in which a vibrating head of a powerful electromagnetic vibrator is lifted;

FIG. 3 is a schematic view of a longitudinal cross-sectional structure of a mounting framework provided by the present invention;

FIG. 4 is a schematic top view of the mounting framework provided by the invention;

FIG. 5 is a schematic top view of the reversible electromagnet provided by the invention mounted in a mounting framework;

1, a base; 2. vibrating the body; 21. a vibrator; 22. a permanent magnet; 23. a guide body; 3. an electromagnetic excitation device; 31. installing a framework; 32. reversible electromagnet mounting groove; 33. coil winding space; 34. a reversible electromagnet; 35. a coil; 4. a vibrating head; 5. a buffer member; 6. a shock pad; 7. a guide sleeve.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 5, the present invention provides a powerful electromagnetic vibrator comprising: the vibration device comprises a base 1, a vibration body 2, an electromagnetic excitation device 3 and a vibration head 4, wherein the vibration body 2 is movably arranged in the base 1; the electromagnetic excitation device 3 is fixedly arranged in the base 1 at two sides of the vibration body 2; the vibrating head 4 is fixedly arranged at the end part of the vibrating body 2, and the vibrating head 4 is positioned outside the base 1; when the superimposed magnetic field generated after the two electromagnetic excitation devices 3 are electrified acts on the vibration body 2, the vibration body 2 can drive the vibration head 4 to do linear reciprocating motion.

Further, the vibration body 2 comprises a vibration body 21, a permanent magnet 22 and a guide body 23, wherein the vibration body 21 is fixedly sleeved at the middle part of the guide body 23, the permanent magnet 22 is fixedly arranged on the vibration body 21, and the vibration head 4 is fixedly arranged at the end part of the guide body 23; the permanent magnet 22 is made of neodymium iron boron. Specifically, the cross section of the guiding body 23 is circular or rectangular, and a fixing hole matched with the guiding body 23 is formed in the middle of the vibrating body 21, so that the vibrating body is fixedly sleeved on the guiding body; the permanent magnets are distributed on the vibrating body in a ring shape.

Further, the electromagnetic excitation device 3 includes a mounting frame 31 fixedly disposed in the base, a reversible electromagnet 34 disposed on the mounting frame 31, and a coil 35 wound around the mounting frame 31, the mounting frame 31 is located near the vibrator 21, the reversible electromagnet 34 is disposed in the coil 35, and the coils 35 located on both sides of the vibrator 21 are connected with currents in opposite directions. Specifically, the installation framework 31 is provided with a reversible electromagnet installation groove 32 and a coil winding space 33 arranged outside the reversible electromagnet installation groove 32, the section of the coil winding space 33 is a rectangular annular section, the coil is arranged in the coil winding space, and the coil winding space can adopt a structure of overlapping silicon steel sheets so as to reduce eddy current and reduce energy loss caused by the eddy current; as shown in fig. 5, the reversible electromagnet mounting groove 32 is annular, the reversible electromagnets 34 are annularly distributed in the reversible electromagnet mounting groove 32, and the reversible electromagnets 34 are made of alnico. The magnetic material with medium coercivity such as aluminum nickel cobalt has the advantages of high remanence (which can be up to 1.35T), low intrinsic coercivity (which is generally smaller than 160 kA/m), nonlinear demagnetization curve and the disadvantage that the restoring line is not coincident with the demagnetization curve, so that the advantages and disadvantages of the magnetic iron such as aluminum nickel cobalt are fully utilized, the electromagnetic thrust force with the same electromagnetic attraction direction is generated on the middle permanent magnet by continuously changing the current direction of the upper coil above the permanent magnet and the lower coil below the permanent magnet, the directions of the magnetic fields generated by the upper coil and the lower coil are continuously changed, the directions of the magnetic fields generated by the upper coil and the lower coil are opposite, meanwhile, the magnetic field direction generated by the reversible electromagnet corresponding to the upper coil is the same as the magnetic field direction generated by the upper coil, the magnetic field direction generated by the reversible electromagnet corresponding to the lower coil is the same as the magnetic field generated by the lower coil, when one group of electromagnetic attraction force is applied on the middle permanent magnet, the other group of excitation devices generates the electromagnetic thrust force with the same electromagnetic attraction direction on the middle permanent magnet, the electromagnetic attraction force with the middle permanent magnet with the same electromagnetic attraction direction is generated by the other group of the electromagnetic attraction force is generated by the other permanent magnet, the electromagnetic attraction force with the middle permanent magnet with the same electromagnetic attraction direction, the electromagnetic attraction force with the electromagnetic attraction force; as shown in fig. 1, the excitation device above the permanent magnet generates downward electromagnetic thrust to act on the permanent magnet, the excitation device below the permanent magnet generates downward electromagnetic attraction to act on the permanent magnet, and the electromagnetic forces generated by the two groups of excitation devices act on the middle permanent magnet cooperatively, so that the vibrating head keeps a falling state; as shown in fig. 2, by changing the current direction, the upper exciting device generates an upward electromagnetic attraction force to act on the permanent magnet, the lower exciting device generates an upward electromagnetic thrust to act on the permanent magnet, and the electromagnetic forces generated by the two groups of exciting devices act on the middle permanent magnet cooperatively, so that the vibrating head keeps a lifted state, and by continuously changing the direction of the coil for switching on the current, the vibrating head is continuously switched between a falling state and a lifted state, thereby achieving the purpose of frequent vibration.

Further, a buffer member 5 is disposed between the vibration head 4 and the base 1, and the buffer member may be a buffer pad or a buffer spring, so as to reduce impact and noise generated during the movement of the impact head. Specifically, the guide body 23 is further provided with a shock pad 6 to reduce the shock generated during the upward movement of the guide body; specifically, as shown in fig. 2, the sliding guide device further comprises a guide sleeve 7, wherein an installation seat is arranged in the base 1, the installation framework is installed in the installation seat, the guide sleeve is arranged in the middle of the installation seat, and the installation seat is sleeved on the guide body through the guide sleeve, so that the guide body can slide up and down smoothly.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-intensity electromagnetic vibrator, comprising:

a base (1);

the vibration body (2) is movably arranged in the base (1);

when the superimposed magnetic fields generated after the two electromagnetic excitation devices (3) are electrified act on the vibration body (2), the vibration body (2) can drive the vibration head (4) to do linear reciprocating motion;

the vibrating body (2) comprises a vibrating body (21), a permanent magnet (22) and a guide body (23), wherein the vibrating body (21) is fixedly sleeved in the middle of the guide body (23), the permanent magnet (22) is fixedly arranged on the vibrating body (21), and the vibrating head (4) is fixedly arranged at the end part of the guide body (23);

the electromagnetic excitation device (3) comprises an installation framework (31) fixedly arranged in the base, a reversible electromagnet (34) arranged on the installation framework (31) and a coil (35) wound on the installation framework (31), wherein the installation framework (31) is positioned near the vibrating body (21), the reversible electromagnet (34) is positioned in the coil (35), and the coils (35) positioned at two sides of the vibrating body (21) are connected with currents with opposite directions;

the reversible electromagnet (34) is made of alnico.

2. The powerful electromagnetic vibrator according to claim 1, wherein the permanent magnet (22) is made of neodymium iron boron.

3. The powerful electromagnetic vibrator according to claim 1, wherein the mounting frame (31) is provided with a reversible electromagnet mounting groove (32), a coil winding space (33) provided outside the reversible electromagnet mounting groove (32), the coil winding space (33) having a rectangular annular cross section, the coil being provided in the coil winding space.

4. A powerful electromagnetic vibrator according to claim 1, characterized in that a buffer (5) is provided between the vibrating head (4) and the base (1).