CN112377550A

CN112377550A - Compound attitude formula motor shock attenuation pedestal

Info

Publication number: CN112377550A
Application number: CN202011146576.0A
Authority: CN
Inventors: 夏保友; 肖群
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-02-19

Abstract

The invention discloses a composite motor damping pedestal which comprises a base, wherein a placing groove is formed in the upper end face of the base, a plurality of limiting grooves are symmetrically formed in the inner wall of the placing groove, a bearing plate and a movable plate are respectively connected in the corresponding limiting grooves in a sliding mode, the bearing plate is located above the movable plate, and a plurality of damping springs are uniformly and elastically connected between the bearing plate and the movable plate. The invention utilizes the matching of the permanent magnet and the induction coil, so that the magnetic field intensity of the electromagnet can change along with the change of the vibration frequency of the working equipment, and further, the aim that a damping piece consisting of the damping spring, the movable plate, the elastic air bag and the magnetorheological fluid can adjust the adaptive frequency range according to the change of the vibration frequency of the working equipment is achieved, the damping and buffering of the working equipment can be better realized, the possibility of resonance between the base and the working equipment can be reduced, and the stable operation of the working equipment can be ensured.

Description

Compound attitude formula motor shock attenuation pedestal

Technical Field

The invention relates to the technical field of damping equipment, in particular to a compound-state motor damping pedestal.

Background

Similar to devices such as motors, generators, compressors, fans and the like, when working, large vibration is often generated, and therefore, a specially-made damping pedestal needs to be equipped, a traditional damping pedestal is often composed of a plurality of damping springs, although a certain buffering effect can be achieved on the vibration of the devices, because the power of the devices during working is fluctuated, the vibration frequency generated by the equipment is changed accordingly, however, the traditional damping pedestal is not good in damping effect due to the fact that the natural damping frequency range of an elastic part of the traditional damping pedestal is fixed, and even when the vibration of the devices during working is changed, the traditional damping pedestal resonates with the damping pedestal, so that the normal use of the devices is affected, and certain damage is caused to the devices.

Therefore, we propose a composite type motor damping pedestal to solve the above problems.

Disclosure of Invention

The invention aims to solve the defects that the traditional damping pedestal in the prior art has poor damping effect on equipment with a large damping frequency range and even can cause certain influence on the equipment, and provides a composite motor damping pedestal.

In order to achieve the purpose, the invention adopts the following technical scheme:

a composite state type motor damping pedestal comprises a base, wherein a placing groove is formed in the upper end face of the base, a plurality of limiting grooves are symmetrically formed in the inner wall of the placing groove, a bearing plate and a movable plate are respectively connected in the corresponding limiting grooves in a sliding mode, the bearing plate is located above the movable plate, a plurality of damping springs are uniformly and elastically connected between the bearing plate and the movable plate, an elastic air bag is elastically connected between the lower end face of the movable plate and the bottom groove wall of the placing groove and filled with magnetorheological fluid, and an electromagnet matched with the elastic air bag is arranged at the lower end of the base;

the lateral wall symmetry of bearing plate inlays and is equipped with the permanent magnetism piece, the symmetry is equipped with a plurality of induction coil that correspond with the permanent magnetism piece on the base, the mounting groove has been seted up to the symmetry on the base, every all there is the conducting block through electrically conductive spring elastic connection on the diapire in the mounting groove, and every induction coil's output all through the input coupling of wire and the electrically conductive spring that corresponds, every all be equipped with the resistance board on the mounting groove inner wall, and every conducting block all with the resistance board sliding connection that corresponds, the conducting block that corresponds passes through the wire and the lower extreme, electro-magnet and the external power of resistance board electric connection in proper order.

Preferably, a magnetic isolation plate is arranged on the upper end face of the movable plate.

Preferably, a permanent magnet plate is arranged on the lower end face of the movable plate, and the magnetic poles of the permanent magnet plate on one side opposite to the electromagnet are the same.

Compared with the prior art, the invention has the beneficial effects that: utilize permanent magnetism piece and induction coil cooperation to make the magnetic field intensity of electro-magnet can change along with the change of equipment vibration frequency, and then reach the purpose that the damper who comprises damping spring, fly leaf, elasticity gasbag and magnetorheological suspensions can adjust the adaptation frequency range according to the change of equipment vibration frequency, not only can be better carry out the shock attenuation buffering to equipment, can also reduce the possibility that base and equipment produced resonance, guarantee that equipment can the steady operation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of a composite-state motor damping pedestal according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic structural diagram of a composite-state motor damping pedestal according to embodiment 2 of the present invention.

In the figure: the device comprises a base 1, a placing groove 2, a limiting groove 3, a bearing plate 4, a movable plate 5, a damping spring 6, an electromagnet 7, an elastic air bag 8, an induction coil 9, a permanent magnet 10, a mounting groove 11, a conductive spring 12, a conductive block 13, a resistance plate 14 and a permanent magnet plate 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-2, a composite motor damping pedestal comprises a base 1, a placement groove 2 is disposed on an upper end surface of the base 1, a plurality of limiting grooves 3 are symmetrically disposed on an inner wall of the placement groove 2, a bearing plate 4 and a movable plate 5 are respectively slidably connected in the corresponding limiting grooves 3, the bearing plate 4 is located above the movable plate 5, the bearing plate 4 is used for placing working equipment, a plurality of damping springs 6 are uniformly and elastically connected between the bearing plate 4 and the movable plate 5, upper and lower ends of the damping springs 6 are respectively and fixedly connected to a lower end surface of the bearing plate 4 and an upper end surface of the movable plate 5, an elastic airbag 8 is elastically connected between a lower end surface of the movable plate 5 and a bottom groove wall of the placement groove 2, and the elastic airbag 8 is filled with magnetorheological fluid (the magnetorheological fluid is a suspension formed by mixing small soft magnetic particles with high magnetic conductivity and low magnetic hysteresis and non-magnetic fluid, the suspension body presents the characteristics of low-viscosity Newtonian fluid under the condition of zero magnetic field, and presents the characteristics of high viscosity and low fluid under the action of strong magnetic field, the rheological property of the magnetorheological fluid under the action of the magnetic field is instantaneous and reversible), the shear yield strength after the rheological property has a stable corresponding relation with the magnetic field intensity, the upper end and the lower end of an elastic air bag 8 are respectively and fixedly connected to the lower end surface of a movable plate 5 and the bottom groove wall of a placing groove 2, the lower end of a base 1 is provided with an electromagnet 7 matched with the elastic air bag 8, the upper end surface of the movable plate 5 is provided with a magnetic isolation plate, and the magnetic field below the movable plate 5 can be prevented from interfering the operation of equipment above the movable plate;

permanent magnet 10 is set up to bearing plate 4's lateral wall symmetry inlay, the symmetry is equipped with a plurality of induction coil 9 that correspond with permanent magnet 10 on the base 1, mounting groove 11 has been seted up to the symmetry on the base 1, all there is conducting block 13 through conductive spring 12 elastic connection on the diapire in every mounting groove 11, and the output of every induction coil 9 all couples through the wire with the input of the conductive spring 12 that corresponds, and all be equipped with rectifier and wave filter between every induction coil 9 and the conductive spring 12 that corresponds, thereby make the electric current of conduction to conductive spring 12 department in the induction coil 9 comparatively stable, all be equipped with resistance plate 14 on the 11 inner walls of every mounting groove, and every conducting block 13 all with the 14 sliding connection of resistance plate that correspond, the conducting block 13 that corresponds passes through wire and resistance plate 14's lower extreme, electro-magnet 7 and external power supply be electric connection in proper order.

The present embodiment can illustrate the functional principle thereof by the following operation modes: under the action of the damping spring 6, the movable plate 5, the elastic air bag 8 and the magnetorheological fluid, the bearing plate 4, the movable plate 5 and the base 1 are in a relatively movable state, and the vibration generated by the working equipment is buffered and eliminated through the damping spring 6, the elastic air bag 8 and the magnetorheological fluid, so that the aim of damping is fulfilled;

when the vibration frequency of the working equipment is increased, the vibration frequency of the bearing plate 4 is increased, the vibration frequency of the permanent magnet 10 is increased, the induced current in the corresponding induction coil 9 is increased, the current conducted to the position of the conductive spring 12 is larger, the contraction force of the conductive spring 12 is increased according to the electromagnetic induction law, the conductive spring 12 drives the conductive block 13 to move downwards on the resistance plate 14, the resistance value in the circuit is reduced, the current value in the circuit is increased, the magnetic field intensity of the electromagnet 7 is enhanced, the viscosity of the magnetorheological fluid in the elastic air bag 8 is increased, the characteristics of a damping part formed by the damping spring 6, the movable plate 5, the elastic air bag 8 and the magnetorheological fluid are changed, the vibration adapting frequency of the damping part is improved, the higher vibration frequency of the working equipment can be better buffered and damped, and the possibility that the base 1 and the working equipment generate resonance is reduced, when the vibration frequency of the working equipment is reduced, the induced current generated in the induction coil 9 is smaller, and similarly, the magnetic field intensity of the electromagnet 7 is reduced, the characteristics of the damping part formed by the damping spring 6, the movable plate 5, the elastic air bag 8 and the magnetorheological fluid are changed, the frequency of the damping part adapting to vibration is reduced, the lower vibration frequency of the working equipment can be better damped, the possibility that the base 1 and the working equipment are in resonance is reduced, and therefore, the vibration damping device can change and adjust the adaptive frequency range of the damping part according to the vibration frequency of the working equipment, can better damp and reduce the possibility that the base 1 and the working equipment are in resonance.

Example 2

Referring to fig. 3, the present embodiment differs from embodiment 1 in that: the lower end face of the movable plate 5 is provided with a permanent magnetic plate 15, and the magnetic poles of the permanent magnetic plate 15 at one side opposite to the electromagnet 7 are the same.

When the magnetic field intensity of the electromagnet 7 changes, the magnetic repulsion force between the electromagnet 7 and the permanent magnetic plate 15 also changes, the compression force applied to the damping spring 6 also changes, the characteristics of the damping piece consisting of the damping spring 6, the movable plate 5, the elastic air bag 8 and the magnetorheological fluid can change more obviously, and the damping effect is more obvious for some working devices with larger vibration amplitude, so that the applicability of the device can be improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A composite state type motor damping pedestal comprises a base (1) and is characterized in that a placing groove (2) is formed in the upper end face of the base (1), a plurality of limiting grooves (3) are symmetrically formed in the inner wall of the placing groove (2), a bearing plate (4) and a movable plate (5) are respectively connected in the corresponding limiting grooves (3) in a sliding mode, the bearing plate (4) is located above the movable plate (5), a plurality of damping springs (6) are uniformly and elastically connected between the bearing plate (4) and the movable plate (5), an elastic air bag (8) is elastically connected between the lower end face of the movable plate (5) and the bottom groove wall of the placing groove (2), variable fluid is filled in the elastic air bag (8), and an electromagnet (7) matched with the elastic air bag (8) is arranged at the lower end of the base (1);

the lateral wall symmetry of bearing plate (4) inlays and is equipped with permanent magnetism piece (10), the symmetry is equipped with induction coil (9) that a plurality of and permanent magnetism piece (10) correspond on base (1), mounting groove (11), every have been seted up to the symmetry on base (1) all have conducting block (13) through conducting spring (12) elastic connection on the diapire in mounting groove (11), and the output of every induction coil (9) all through the wire with the input coupling of the conducting spring (12) that corresponds, every all be equipped with resistance board (14) on mounting groove (11) inner wall, and every conducting block (13) all with resistance board (14) sliding connection that corresponds, the lower extreme, electro-magnet (7) and the external power supply of corresponding conducting block (13) through wire and resistance board (14) electric connection in proper order.

2. A combined-state motor damping pedestal according to claim 1, wherein the movable plate (5) is provided with a magnetic isolation plate on the upper end surface.

3. A combined-state motor damping pedestal according to claim 1, wherein the lower end face of the movable plate (5) is provided with a permanent magnet plate (15), and the permanent magnet plate (15) has the same magnetic pole on the side opposite to the electromagnet (7).