Surface texturing composite hydraulic mute cover plate

Abstract

The invention provides a surface texturing composite hydraulic mute cover plate which comprises an inner layer (1), a middle layer (2) and an outer layer (5), wherein a plurality of through holes (10), (11) and (12) are uniformly formed in the inner layer (1); a plurality of blind holes (7), (8) and (9) are formed in the inner layer (2); cone wedges (6) are formed on the outer layer (5); the firstthrough hole (10) communicates with the first blind hole (9); the second through hole (11) communicates with the second blind hole (8); the third through hole (12) communicates with the third blind hole (7); the outer layer (5) and the inner layer (2) form a sealed state; the inside of the outer layer (5) is fully filled with hydraulic oil (4); spherical particles (3) are scattered in the hydraulic oil (4); the inner layer (1) and the middle layer (2) are tightly bonded; and the middle layer (2) and the outer layer (3) are tightly bonded.

Description

Technical field [0001] The invention relates to hydraulic components and system noise reduction technology, in particular to a surface-textured composite hydraulic silent cover sheet. Background technique [0002] Hydraulic components and systems belong to high-load and heavy-duty mechanical energy equipment. With the high pressure, high speed, and large capacity of hydraulic technology, the noise of hydraulic components and their devices becomes more and more serious. Among them, hydraulic pumps and overflow valves are the main noise sources, while hydraulic oil tanks are the main radiators of noise due to their large volume. Pipelines and oil tanks can amplify the noise generated by hydraulic pumps and overflow valves. The noise generated by hydraulic components and their devices is severely unfriendly to humans and machines, and is not allowed in special applications. [0003] The noise generated by hydraulic components and their devices can be divided into fluid noise and mech...

AI Technical Summary

Problems solved by technology

[0006] 1. For the noise of hydraulic components and systems, start from the control point of noise source, based on the analysis of internal fluid noise and mechanical noise of the components, carry out corresponding noise reduction measures research, the noise reduction is difficult, costly, and the effect is not ideal;

[0007] 2. There is no noise reduction research on hydraulic components and systems based on acoustic principles, ignoring the noise reduction path that blocks the propagation of sound waves

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