A vibration amplitude amplification vibrator

Abstract

The present application belongs to the field of vibration test, and particularly relates to a vibration amplitude amplification vibrator. The existing amplitude amplification technology has problems of complex structure, low amplification efficiency, poor stability and the like. The present application comprises a vibration table at the bottom, a transmission cavity in the middle and a test piece mounting table top at the upper part. The transmission cavity is a barrel-shaped structure with openings at both ends. The aperture of the upper opening is smaller than that of the lower opening. The lower opening is provided with a lower piston, and the upper opening is provided with an upper piston. The lower piston and the upper piston are filled with hydraulic oil. The lower piston is connected with the vibration table through a lower piston rod, and the upper piston is connected with the test piece mounting table top through an upper piston rod. The transmission cavity is also provided with a temperature sensor. The transmission cavity is also communicated with an oil tank through an oil inlet pipeline and an oil outlet pipeline. The stability of vibration during amplitude amplification can be ensured, and the fluctuation and noise during vibration can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of vibration testing, and specifically relates to a vibration amplitude amplification vibrator. Background Technology

[0002] In many engineering applications, it is necessary to apply vibrations with large amplitudes to objects. However, traditional vibration sources often cannot directly provide the required large amplitudes, and existing amplitude amplification technologies suffer from problems such as complex structures, low amplification efficiency, and poor stability. Therefore, developing a simple, efficient, and stable amplitude amplification vibrator is of great significance. Summary of the Invention

[0003] The vibration amplitude amplification vibrator involved in this invention utilizes hydraulic transmission of vibration, overcoming the problems existing in the prior art.

[0004] This invention proposes a vibration amplitude amplification vibrator, comprising a bottom vibration table, a middle transmission cavity, and an upper specimen mounting platform. The transmission cavity is a barrel-shaped structure with openings at both ends. The diameter of the upper opening is smaller than that of the lower opening. A lower piston is located in the lower opening, and an upper piston is located in the upper opening. The space between the lower and upper pistons is filled with hydraulic oil. The lower piston is connected to the vibration table via a lower piston rod, and the upper piston is connected to the specimen mounting platform via an upper piston rod. The transmission cavity also has a temperature sensor and is connected to an oil tank via an inlet and an outlet oil pipe. The temperature control unit controls the hydraulic oil in the oil tank to cool the hydraulic oil in the transmission cavity based on the collected temperature information.

[0005] Advantageously, the two apertures and extension depth of the transmission cavity are designed according to the amplitude amplification requirements.

[0006] Advantageously, the transmission chamber has an oil inlet and an oil outlet, and is disposed between the moving sections of the lower piston and the upper piston.

[0007] Advantageously, the vibration input is provided by the vibration table, the lower piston reciprocates in the transmission chamber, and the upper piston is driven by hydraulic pressure to reciprocate in the transmission chamber with an expanded amplitude.

[0008] Advantageously, the lower piston, upper piston, and transmission chamber remain sealed.

[0009] Advantageously, the specimen mounting platform has a specimen fixing mechanism.

[0010] Advantageously, the vibration table has a drive mechanism.

[0011] Advantageously, the fuel tank has a sealed structure.

[0012] Beneficial effects: Compared to some complex mechanical transmission amplitude amplification structures, it is lower in cost and easier to manufacture and maintain. Hydraulic transmission also features good stability, ensuring the stability of vibration during amplitude amplification and reducing fluctuations and noise. It can also be adjusted by replacing components, adapting to different working conditions and amplitude amplification requirements, exhibiting strong versatility and flexibility. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the vibration amplitude amplification vibrator of the present invention.

[0014] 1-Vibration table, 2-Lower piston rod, 3-Temperature control unit, 4-Oil tank, 5-Specimen mounting platform, 6-Upper piston rod, 7-Upper piston, 8-Temperature sensor, 9-Transmission chamber, 10-Lower piston Detailed Implementation This invention relates to a vibration amplitude amplification vibrator, mainly comprising a vibration table 1, a lower piston rod 2, a temperature control unit 3, an oil tank 4, a specimen mounting platform 5, an upper piston rod 6, an upper piston 7, a temperature sensor 8, a transmission cavity 9, and a lower piston 10. The transmission cavity 9 is a barrel-shaped structure with openings at both ends; the upper barrel diameter is smaller than the main barrel diameter. The lower piston 10 is located in the lower opening, and the upper piston 7 is located in the upper opening. The space between the lower piston 10 and the upper piston 7 is filled with hydraulic oil. A temperature sensor 8 is also located on the transmission cavity 9 to measure the temperature of the hydraulic oil. The lower piston 10 is connected to the vibration table 1 via the lower piston rod 2, and the upper piston 7 is connected to the specimen mounting platform 5 via the upper piston rod 6. The vibrator also includes an oil tank 4, which has an inlet pipe and an outlet pipe between it and the transmission cavity 9. The temperature control unit 3 collects data from the temperature sensor 8 and controls the hydraulic oil in the oil tank 4 to cool the hydraulic oil in the transmission cavity 9 via the inlet pipe.

[0015] The vibration table 1 provides vibration input, driving the lower piston 10 to reciprocate within the transmission chamber 9 via the lower piston rod 2. The transmission chamber 9 is filled with hydraulic oil and equipped with a temperature sensor 8. The movement of the lower piston 10 transmits pressure stably to the upper piston 7 via the hydraulic oil. Due to the incompressibility of the hydraulic oil, the pressure is evenly transmitted to the upper piston 7. The upper piston 7 and the lower piston 10 have different cross-sectional areas. Under the same pressure, the area difference causes the upper piston 7 to produce an amplified displacement, thus amplifying the amplitude of the specimen on the specimen mounting platform 5.

[0016] Due to the different cross-sectional areas, the amplitude is amplified by the area difference. Let the cross-sectional area of ​​the upper piston 3 be A and the cross-sectional area of ​​the lower piston 6 be B. The amplitude amplification factor is B / A.

[0017] The transmission chamber 9 has an oil inlet at the bottom and an oil outlet at the top, which facilitates the exchange of hot oil inside and outside the oil tank 5 and maintains a stable temperature.

Claims

1. A vibration amplitude amplification vibrator, characterized in that: The device includes a vibration table (1) at the bottom, a transmission chamber (9) in the middle, and a specimen mounting platform (5) at the top. The transmission chamber (9) is a barrel-shaped structure with openings at both ends. The diameter of the opening at the top is smaller than that at the bottom. The bottom opening has a lower piston (10), and the top opening has an upper piston (7). The space between the lower piston (10) and the upper piston (7) is filled with hydraulic oil. The lower piston (10) is connected to the vibration table (1) through the lower piston rod (2), and the upper piston (7) is connected to the specimen mounting platform (5) through the upper piston rod (6). The transmission chamber (9) also has a temperature sensor (8). The transmission chamber (9) is also connected to the oil tank (4) through an oil inlet pipe and an oil outlet pipe. The temperature control unit (3) controls the hydraulic oil in the oil tank (4) to cool the hydraulic oil in the transmission chamber (9) based on the collected temperature information.

2. The vibration amplitude amplification vibrator according to claim 1, characterized in that: The two apertures and extension depth of the transmission cavity (9) are designed according to the amplitude amplification requirements.

3. The vibration amplitude amplification vibrator according to claim 1, characterized in that: The transmission chamber (9) has an oil inlet and an oil outlet, and is located between the moving ranges of the lower piston (10) and the upper piston (7).

4. The vibration amplitude amplification vibrator according to claim 1, characterized in that: Vibration input is provided by the vibration table (1), the lower piston (10) reciprocates in the transmission chamber (9), and the upper piston (7) is driven by hydraulic pressure to reciprocate in the transmission chamber (9) with an expanded amplitude.

5. The vibration amplitude amplification vibrator according to claim 1, characterized in that: The lower piston (10), the upper piston (7), and the transmission chamber (9) are kept sealed.

6. The vibration amplitude amplification vibrator according to claim 1, characterized in that: The specimen mounting platform (5) has a specimen fixing mechanism.

7. The vibration amplitude amplification vibrator according to claim 1, characterized in that: The vibration table (1) has a driving mechanism.

8. The vibration amplitude amplification vibrator according to claim 1, characterized in that: The oil tank (4) is a sealed structure.

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