CN217738605U

CN217738605U - Mute type vibration test device

Info

Publication number: CN217738605U
Application number: CN202221669081.0U
Authority: CN
Inventors: 李一鹏; 王明
Original assignee: Suzhou Tst Control Technology Co ltd
Current assignee: Suzhou Tst Control Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-04
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a silent type vibration test device, guiding mechanism including vibration mechanism and cooperation vibration mechanism. The guide mechanism comprises a crossed triangular spring type guide supporting mechanism, and the vibration mechanism comprises a magnetic circuit assembly. The magnetic circuit assembly comprises a magnetic cylinder and a central magnetic pole arranged at the center of the magnetic cylinder, the vibration mechanism comprises a moving coil assembly and a moving coil vibration surface, the central magnetic pole is sleeved outside the moving coil assembly, the moving coil vibration surface is coaxially connected to the upper end of the moving coil assembly, the crossed triangular spring type guide supporting mechanism comprises two leaf spring plate plates, one end of each leaf spring plate is connected to the vibration mechanism, and the other end of each leaf spring plate is connected to the magnetic cylinder. The utility model discloses can obtain good silence effect.

Description

Mute type vibration test device

Technical Field

The utility model relates to a vibration test device especially relates to a silence formula vibration test device.

Background

The purpose of the vibration test is to artificially simulate the vibration load which a test piece may be subjected to in the transportation, storage and use processes and the influence of the vibration load on the test piece in a laboratory, and to evaluate the environmental adaptability and reliability of the test piece.

The vibration table is also called a vibration exciter or a vibration generator. It is a device that uses electro-dynamic, electro-hydraulic, piezoelectric or other principles to obtain mechanical vibrations. The principle is to input an excitation signal to a coil placed in a magnetic field to drive a stage associated with the coil. The electrodynamic vibration table is mainly used for measuring vibration above 2 Hz. In the frequency range below 20Hz, electrohydraulic vibration tables are often used, where the nature of the vibratory signal is controlled by an electric servo system. The hydraulic drive system can give large displacements and impact forces. The vibration table can be used for calibrating the accelerometer, and can also be used for measuring the vibration performance of the electroacoustic device and performing vibration test on the towering of the electroacoustic device. For different test objects and technical indexes, the vibration table with different structures and excitation ranges is selected.

When involving the vibration test of large-scale device, the weight of the device to be tested reaches several tons, has higher requirement to the bearing capacity and the stability of shaking table this moment, and the direction adopts gyro wheel or leaf spring formula guiding mechanism on traditional shaking table, and the lower direction adopts gyro wheel or bearing formula connected mode, can arouse resonance when carrying out the vibration detection operation under certain frequency, produces big noise, unsatisfied experimental requirement.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a silence formula vibration test device, it increases transverse rigidity, reduces and produces resonance, has improved the silence effect.

In order to achieve the above object, the utility model provides a silence formula vibration test device. The guiding mechanism comprises a crossed triangular spring type guiding and supporting mechanism, the vibrating mechanism comprises a magnetic circuit assembly, the magnetic circuit assembly comprises a magnetic cylinder and a central magnetic pole arranged at the center of the magnetic cylinder, the vibrating mechanism comprises a moving coil assembly and a moving coil vibrating surface, the central magnetic pole is sleeved outside the moving coil assembly, the moving coil vibrating surface is coaxially connected to the upper end of the moving coil assembly, the crossed triangular spring type guiding and supporting mechanism comprises two leaf spring sheet plates, one end of each of the two leaf spring sheet plates is connected to the vibrating mechanism, and the other end of each of the two leaf spring sheet plates is connected to the magnetic cylinder.

In one or more embodiments, one end of each of the two reed plates is overlapped and fixedly connected to form an overlapped end, the other end of each reed plate is a branched end, the overlapped end is installed on the magnetic cylinder, and the branched end is installed on the vibration mechanism.

In one or more embodiments, the included angle between the two reed plates is 15-30 °.

In one or more embodiments, three crossed triangular spring type guiding and supporting mechanisms are arranged, and are arranged around the circumference of the vibrating mechanism at equal intervals.

In one or more embodiments, the end face of the cylinder is provided with a mounting bracket that cooperates with a cross-spring assembly that maintains a level condition between the mounting bracket and the vibration mechanism.

In one or more embodiments, the cross triangular spring type guiding and supporting mechanism comprises an upper cross triangular spring type guiding and supporting mechanism and a lower cross triangular spring type guiding and supporting mechanism, the upper cross triangular spring type guiding and supporting mechanism is connected between the mounting frames on the vibrating surface of the moving coil and the upper end surface of the magnetic cylinder, and the lower cross triangular spring type guiding and supporting mechanism is connected between the mounting frames on the bottom of the moving coil assembly and the lower end surface of the magnetic cylinder.

In one or more embodiments, a water cooling mechanism is disposed in the magnetic circuit assembly, and the water cooling mechanism includes a coolant inlet, a coolant outlet, and a coolant line.

In one or more embodiments, the magnetic cylinder incorporates an exciting coil, and the coolant inlet and the coolant outlet are opened at both sides of a connection portion of the magnetic cylinder with the center magnetic pole and are flush with the exciting coil.

In one or more embodiments, the crossed triangular spring type guiding and supporting mechanism is made of a flexible material and a shock absorbing material which are combined.

Compared with the prior art, the utility model has the advantages of: the crossed triangular spring type structure is adopted, so that the transverse rigidity is increased, resonance is not easy to generate, and a good mute effect can be obtained due to the fact that the resonance phenomenon is effectively avoided.

Drawings

Fig. 1 is a schematic top view of a silent vibration testing apparatus according to the present invention;

fig. 2 is a schematic sectional structure diagram of the mute type vibration testing apparatus of the present invention.

In the figure: 1. a magnetic circuit component; 11. a magnetic cylinder; 12. a central magnetic pole; 13. a field coil; 2. a vibration mechanism; 21. a moving coil assembly; 22. a moving coil vibrating surface; 31. a reed plate; 32. a coincident end; 33. a bifurcated end; 4. a water cooling mechanism; 41. a coolant inlet; 42. a coolant outlet; 5. and (7) mounting frames.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings, but it should be understood that the scope of the invention is not limited by the detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1 to fig. 2, the utility model discloses a silent vibration test device, which comprises a vibration mechanism and a guide mechanism. The guide mechanism comprises a crossed triangular spring type guide supporting mechanism, and the vibrating table body comprises a magnetic circuit component 1 and a vibrating mechanism 2. The vibration test device constructs a bridged triangular spring type guide supporting mechanism between the vibration mechanism 2 and the magnetic cylinder 11, so that the same external force support guide is obtained at all angles when the vibration mechanism 2 reciprocates in a working state, and the deflection and non-axial vibration which possibly occur in the working state of the vibration mechanism 2 are reduced to the greatest extent. In addition, the triangular spring type guiding and supporting mechanism increases the transverse rigidity, so that resonance is not easy to generate during working, and a good silencing effect can be obtained due to the fact that the resonance phenomenon is effectively avoided.

In one embodiment, as shown in fig. 2, the crossed triangular spring type guiding and supporting mechanism comprises an upper crossed triangular spring type guiding and supporting mechanism 3 and a lower crossed triangular spring type guiding and supporting mechanism 6. The upper cross triangular spring type guiding and supporting mechanism 3 is connected between the mounting rack 5 on the upper end face of the moving coil vibrating face 22 and the magnetic cylinder 11, the lower cross triangular spring type guiding and supporting mechanism 6 is connected between the bottom of the moving coil assembly 21 and the mounting rack 5 on the lower end face of the magnetic cylinder 11, the upper cross triangular spring type guiding and supporting mechanism 3 and the lower cross triangular spring type guiding and supporting mechanism 6 can achieve effective guiding and supporting for the two ends of the vibrating mechanism 2, and the stability of the vibrating mechanism 2 in the working state is further improved.

The upper cross triangular spring type guiding and supporting mechanism 3 and the lower cross triangular spring type guiding and supporting mechanism 6 are the same in structure, and the upper cross triangular spring type guiding and supporting mechanism 3 is mainly described below. As shown in fig. 1, the upper cross triangular spring type guide support mechanism 3 includes two leaf spring plate plates 31. One end of the leaf spring 31 is overlapped and fixedly connected to form an overlapped end 32. The other end is a branch end 33, the superposed ends 32 of the two reed plates 31 are arranged on the magnetic cylinder 11, and the branch end 33 is arranged on the vibration mechanism 2. The included angle between the two leaf spring plates 31 is 15-30 degrees. The spring assembly with the structure is a stable triangular structure, three connection points are formed between the spring assembly and the vibration mechanism 2 and between the spring assembly and the magnetic cylinder 11, the crossed spring assembly 3 forms a herringbone structure, the state is stable, the spring assembly has enough extension capacity, and torsion can be effectively resisted and quick reset can be realized when external force is applied.

In one embodiment, three upper cross triangular spring type guide support mechanisms 3 are provided, and are arranged at equal intervals around the circumference of the vibration mechanism 2.

A water cooling mechanism 4 is disposed in the magnetic circuit module 1. The water cooling mechanism 4 includes a coolant inlet 41, a coolant outlet 42, and a coolant line, and as can be seen from fig. 2, the magnet cylinder 11 has the exciting coil 13 built therein, and the coolant inlet 41 and the coolant outlet 42 are provided on both sides of a connection portion between the magnet cylinder 11 and the center magnetic pole 12 and are as high as the exciting coil 13, so that sufficient heat dissipation of the center magnetic pole 12, the exciting coil 13, and the moving coil assembly 21 can be achieved.

In one embodiment, the upper cross triangular spring type guiding and supporting mechanism 3 and the lower cross triangular spring type guiding and supporting mechanism 6 can be made of a flexible material and a vibration absorbing material in a combined mode, and the silencing effect under large displacement is guaranteed.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a silence formula vibration test device, includes vibration mechanism and cooperation vibration mechanism's guiding mechanism, its characterized in that: the guiding mechanism comprises a crossed triangular spring type guiding and supporting mechanism, the vibrating mechanism comprises a magnetic circuit assembly, the magnetic circuit assembly comprises a magnetic cylinder and a central magnetic pole arranged at the center of the magnetic cylinder, the vibrating mechanism comprises a moving coil assembly and a moving coil vibrating surface, the central magnetic pole is sleeved outside the moving coil assembly, the moving coil vibrating surface is coaxially connected to the upper end of the moving coil assembly, the crossed triangular spring type guiding and supporting mechanism comprises two leaf spring sheet plates, one end of each of the two leaf spring sheet plates is connected to the vibrating mechanism, and the other end of each of the two leaf spring sheet plates is connected to the magnetic cylinder.

2. A silent vibration test apparatus as defined in claim 1, wherein: one end of each of the two reed plates is overlapped and fixedly connected to form an overlapped end, the other end of each reed plate is a branched end, the overlapped ends are installed on the magnetic cylinders, and the branched ends are installed on the vibration mechanism.

3. A silent vibration test apparatus as defined in claim 2, wherein: the included angle between the two reed plates is 15-30 degrees.

4. A silent vibration test apparatus as defined in claim 1, wherein: the number of the crossed triangular spring type guiding and supporting mechanisms is three, and the three crossed triangular spring type guiding and supporting mechanisms are arranged at equal intervals around the circumference of the vibration mechanism.

5. A silent vibration test apparatus as defined in claim 4, wherein: and the end surface of the magnetic cylinder is provided with a mounting rack matched with the crossed spring assembly, and the crossed spring assembly is kept in a horizontal state between the mounting rack and the vibration mechanism.

6. A silent vibration test apparatus as defined in claim 1, wherein: the cross triangular spring type guiding and supporting mechanism comprises an upper cross triangular spring type guiding and supporting mechanism and a lower cross triangular spring type guiding and supporting mechanism, the upper cross triangular spring type guiding and supporting mechanism is connected between the mounting frames on the vibrating surface of the moving coil and the upper end surface of the magnetic cylinder, and the lower cross triangular spring type guiding and supporting mechanism is connected between the mounting frames on the bottom of the moving coil assembly and the lower end surface of the magnetic cylinder.

7. A silent vibration test apparatus as defined in claim 1, wherein: a water cooling mechanism is arranged in the magnetic circuit assembly and comprises a cooling liquid inlet, a cooling liquid outlet and a cooling liquid pipeline.

8. A silent vibration test apparatus as defined in claim 7, wherein: the magnetic cylinder is internally provided with an excitation coil, and the cooling liquid inlet and the cooling liquid outlet are arranged on two sides of the connecting part of the magnetic cylinder and the central magnetic pole and are as high as the excitation coil.

9. A silent vibration test apparatus as defined in claim 1, wherein: the crossed triangular spring type guiding and supporting mechanism is made by combining a flexible material and a vibration absorbing material.