Horizontal unidirectional vibration table with adjustable amplitude and frequency

A vibrating table, horizontal technology, applied in vibration testing, testing of machine/structural components, measuring devices, etc., can solve the problems of low driving efficiency, complex equipment, and complex force-transmitting mechanical devices, avoid strong natural vibration, improve Performance indicators, the effect of easy popularization and application

CN110987341AActive Publication Date: 2020-04-10CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-04-10

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Abstract

The invention discloses a horizontal unidirectional vibration table with adjustable amplitude and frequency, which relates to the technical field of vibration test equipment. The vibration table comprises a bracket, a vibration table board and a driving mechanism, wherein the vibration table board and a test piece fixed to the table board are driven by means of the driving mechanism to vibrate horizontally on the bracket in a reciprocating mode; the driving mechanism comprises a variable frequency motor capable of adjusting a rotating speed to control the vibration frequency, a reduction gearbox and an eccentric adjusting mechanism for controlling the amplitude; the eccentric adjusting mechanism comprises a Pi-shaped sliding groove fixed to the lower portion of the table board, a U-shapedsliding groove connected with an output shaft of the reduction gearbox and an eccentric shaft; the eccentric shaft comprises an eccentric shaft sliding block and an eccentric shaft pin arranged aboveone end of the eccentric shaft sliding block; the eccentric shaft sliding block can slide and be locked in the U-shaped sliding groove so as to adjust an eccentric distance of the eccentric shaft pin;the eccentric shaft pin is inserted into the Pi-shaped sliding groove; and the eccentric shaft pin does circular motion in the horizontal plane and drives the Pi-shaped sliding groove and the vibration table board to vibrate horizontally in a reciprocating mode in the rotating process of the eccentric shaft.
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Description

technical field

[0001] The invention relates to the technical field of vibration test equipment, in particular to a vibration table used in a horizontal unidirectional vibration test with adjustable amplitude and frequency. Background technique

[0002] Vibration tables are often used as test equipment for dynamic tests in the field of mechanical and civil engineering. At present, there are two types of relatively mature test vibration tables on the market: electromagnetic type and hydraulic type. The electromagnetic vibrating table uses the electromagnetic force generated by the energized coil in the magnetic field to excite the vibration. Its advantages are: the equipment is small in size and easy to control; the disadvantages are: the mass of the test piece is small and the vibration frequency is high. Therefore, the electromagnetic vibration table is generally more suitable for high-frequency vibration tests of small specimens. The hydraulic vibration table adopts a hy...

Examples

Embodiment Construction

[0036] The specific embodiments of the present invention will be briefly described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those skilled in the art without creative work Examples, all belong to the protection scope of the present invention.

[0037] Figure 1-Figure 9 Shows a preferred embodiment of the present invention, and analyzes its structure in detail from different angles

[0038] A horizontal one-way vibrating table with adjustable amplitude and frequency includes a bracket, a vibrating table surface and a driving mechanism.

[0039] Such as figure 1 , 2 As shown, the bracket 1 is made of a hard metal material, and comprises four columns 11, two upper beams 12, two lower beams 13, two upper longitudinal beams 14 and two lower longitudinal beams 15. A ...