Double-cylinder driving large-span double-eccentric rotary vibration self-feedback synchronization method and device

Abstract

The invention discloses a double-cylinder driving large-span double-eccentric rotary vibration self-feedback synchronization method and device. Double cylinders are strongly coupled through an energyexchanger, the oil pressure difference between the double cylinders is caused by the structural difference, the pressure difference causes instantaneous asynchronization of hydraulic cylinders and generates the phase difference between eccentric blocks, the pressure difference drives the energy exchanger to push oil liquid through a piston to supplement oil to the low-pressure hydraulic cylinder,the high-pressure hydraulic cylinder discharges oil to an oil cavity in the energy exchanger, the double cylinders discharge oil and supplement oil in time, pressure building and negative pressure areavoided, and stable flowing of fluid is ensured. Due to the phase difference between the eccentric blocks, the original high-pressure hydraulic cylinder is subjected to a relatively small vibration torque effect, and therefore the oil pressure is reduced, the oil pressure of the original low-pressure hydraulic cylinder is increased, and after the pressure of the two hydraulic cylinders is equal,energy exchange is completed, the instantaneous speed is the same, two systems stably run under the stable phase difference, coupling synchronization of the transmission of the double hydraulic cylinders is achieved, and asynchronous energy losses in hydraulic transmission are avoided.

Description

technical field [0001] The invention relates to the technical field of double-cylinder driving vibration, in particular to a double-cylinder driving large-span double-eccentric rotary vibration self-feedback synchronization method and device. Background technique [0002] Compared with motor transmission, hydraulic transmission has an absolute advantage in the field of large-scale and efficient construction machinery because of its higher power-to-weight ratio. However, it has not yet been applied in some fields, resulting in that the equipment in these fields still cannot develop towards high efficiency and large scale. For example, the concrete vibrating table in the prefabricated construction industry, the vibrating screener in the mine, the vibrating feeder, etc., still use the self-synchronized vibration driven by the motor. [0003] Especially the green and sunny construction industry with a bright future like prefabricated buildings. The vibrating system vibrates th...

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Problems solved by technology

Noise pollution seriously endangers the health and safety of workers in the prefabricated construction industry! In addition, in the traditional motor-driven vibration table, 60% of the vibration energy is transmitted along the table body where the vibrator is installed by interface waves, which is a huge waste

[0004] For hydraulic transmission, the synchronization problem is the bottleneck that restricts its application to vibration tables and other fields. If electro-hydraulic control technology is used, the system response is difficult to meet the requirements of the vibration table, so control synchronization cannot be used.

At present, people in related fields have done quite a lot of research on hydraulic synchronization, and put forward some basis for judging synchronization. Problems with bearing and sealing performance being sensitive to wear over the life cycle and instability of hydraulic oil flow in the fitted disc area are practically difficult to synchronize

[0005] In addition, in traditional hydraulic transmission, there is no strong coupling between speed and force, which makes it difficult for energy to be converted and transferred to each other in two independent rotary drive systems in the same vibration system. For movement, the hydraulic oil needs to be replenished but the energy cannot be replenished. The other hydraulic cylinder needs to drain the oil in order to slow down the movement, but it cannot release the energy.

Therefore self-synchronization is not possible

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