68results about How to "Achieve vibration and noise reduction" patented technology

The invention provides a rod-fin type loop heat pipe with varying sizes. The rod-fin type loop heat pipe includes an evaporation header, a condensation header, rising pipes and return pipes, flow stabilizing devices are arranged in the rising pipes, the flow stabilizing devices each include a core body and an outer shell, the core bodies are arranged in the outer shells, the outer shells are connected and fixed to the inner walls of the rising pipes, the core bodies each include a plurality of radial rods extending from the centers of the core bodies to the radial direction, and a plurality offins extending downwards from the radial rods are arranged on each radial rod; and the core bodies each include a core column arranged at the center of each core body, one ends of the radial rods arefixed into the core columns, and from the core columns of the rising pipes to the radial extension direction, the size of the fins on the same radial rods is getting larger and larger. According to the rod-fin type loop heat pipe with the varying sizes, the size of the fins on the rising pipe walls is increased, so that the ability to cut vapor phases and liquid phases near the pipe walls is enhanced. The ability to cut near the pipe walls is focused to be strengthened, and noise reduction and vibration damping can be targeted for specific situations, so that the effects of noise reduction and vibration damping are further achieved, and meanwhile, heat transfer can be further enhanced.

A one-way slide type vibration and noise reduction rubber support of rail transit bridge comprises an upper support plate (2) and a lower support plate (8), wherein the lower wedge fixing block I (5) and the lower wedge fixing block III (10) on the lower support plate (8) are opposite to each other, the lower wedge fixing block II (7) and the lower wedge fixing block IV (11) on the lower support plate (8) are opposite to each other, the bottom of the upper support plate (2) is correspondingly provided with four upper wedge fixing blocks (4), a vulcanized rubber plate I (6) is disposed between the lower wedge fixing block I (5) and the corresponding upper wedge fixing block (4), a vulcanized rubber plate II (12) is disposed between the lower wedge fixing block II (7) and the corresponding upper wedge fixing block (4), a vulcanized rubber plate III (13) is disposed between the lower wedge fixing block III (10) and the corresponding upper wedge fixing block (4), and a vulcanized rubber plate IV (14) is disposed between the lower wedge fixing block IV (11) and the corresponding upper wedge fixing block (4). The one-way slide type vibration and noise reduction rubber support has the advantages that sufficient vertical rigidity and vertical vibration reduction damping are guaranteed, and weak vibration of rails during operation is weakened.

The invention provides a noise reduction device and a noise reduction method for long-stroke large-diameter hydraulic cylinder honing processing procedure. The noise reduction device is composed of an intelligent control system and an annular support device. During the first working operation of the honing processing, the intelligent control system collects audio signal generated in the honing processing process through a sound pick-up and records the time required by a single working operation; an audio frequency recognition algorithm module is used for recognizing the noise spike appearing time; a support position computing module is used for computing position needing to reduce vibration and noise and add the support point. The noise amplitude-displacement diagram is displayed in a human-computer interaction unit of the intelligent control system and the position for adding support point in a numerical value manner. The number of the support point can be set by the operator through the human-computer interaction unit of the intelligent control system. During the honing processing period, the vibration and noise can be reduced in the honing processing process by moving or adding the annular support device to the position point given by the intelligent control system.