Novel vibrator

Abstract

The invention discloses a novel vibrator comprising a piston rod, a roof plate, a hammer, and a flat plate. The upper end of the piston rod is fixed to the roof plate, and the lower end of the piston rod is fixed to the flat plate. An upper hydraulic oil channel and a lower hydraulic oil channel are arranged inside the piston rod. Electro-hydraulic servo valves are connected to the inlets of the upper hydraulic oil channel and the lower hydraulic oil channel. Support rods are arranged between the roof plate and the flat plate. The support rods all penetrate through the hammer. A bushing is installed in the center of the hammer. The piston rod passes through the center of the hammer. The beneficial effects are as follows: as the oil channels are arranged inside the piston rod, rotational torque produced by oil to the vibration part is avoided, the bending deformation of the support rods is avoided, the resistance of vertical movement of the hammer is reduced, the output force of a vibration source is increased, random noise interference generated by a vibration source structure is eliminated, and the signal-to-noise ratio of excitation wave of a vibration source is improved.

Description

technical field [0001] The invention relates to the field of seismic exploration, in particular to a novel vibrator. Background technique [0002] All the oil passages of the traditional piston vibrator are distributed on one side of the weight, and the electro-hydraulic servo valve is also installed on one side of the weight accordingly, and vibrates up and down with the weight, that is, the structures on both sides of the weight are asymmetric. The oil in the high-pressure oil passage on one side of the heavy hammer will exert force on the heavy hammer during the movement, while the other side is not affected by the pressure of the oil, that is, the force on both sides of the heavy hammer is uneven, which will cause the vibrator to work When shaking occurs when the weight is unevenly loaded, the supporting column will also be bent and deformed, and the deformation of the column will increase the resistance in the vertical direction of the weight and reduce the output force...

AI Technical Summary

Problems solved by technology

The oil in the high-pressure oil passage on one side of the heavy hammer will exert force on the heavy hammer during the movement, while the other side is not affected by the pressure of the oil, that is, the force on both sides of the heavy hammer is uneven, which will cause the vibrator to work When the weight is shaken, the uneven force of the weight will also cause the supporting column to bend and deform, and the deformation of the column will increase the resistance in the vertical direction of the weight and reduce the output force. There will be a certain collision between them, and noise will be generated. The deformation of the column will increase with the increase of the working time of the vibrator, which will cause the vibration amplitude of the vibrator to change continuously. This vibration will lead to a random frequency range that is difficult to measure and calculate. noise

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