56results about How to "Meet the needs of vibration reduction" patented technology

The invention provides a micro-vibration parallel connection vibration isolation device for a satellite control moment gyro group. The control moment gyro group comprises m control moment gyros, wherein m is larger than or equal to 3 and is smaller than or equal to 6. The control moment gyros are evenly installed on the periphery close to the circle center of a satellite cellular board. The micro-vibration parallel connection vibration isolation device is mainly composed of vibration isolator assemblies located between a satellite load-bearing cylinder and a satellite cellular board. Each vibration isolator assembly comprises an upper connecting rod, a lower connecting rod, a vibration isolator, a movable plate, a damping layer and a static plate, wherein the upper connecting rod is connected with the load-bearing cylinder, the lower connecting rod is connected with the cellular board, and the vibration isolator, the movable plate, the damping layer and the static plate are located between the upper connecting rod and the lower connecting rod and sequentially connected through connecting pieces. The number of the vibration isolator assemblies is 2n, wherein n is larger than or equal to 3 and is smaller than or equal to 8. Every two adjacent vibration isolator assemblies form one set through an upper adapter and fixed to the satellite cellular board through a lower adapter. The n sets of vibration isolator assemblies are evenly distributed in the circumferential direction of the satellite cellular board. According to the micro-vibration parallel connection vibration isolation device, interference, formed by micro-vibration response caused during in-orbit operation of the CMGs, on sensitive loads can be remarkably lowered, and stability, reliability and safety of the satellite-borne high-precision sensitive loads during in-orbit operation are ensured.

The invention relates to auto parts and discloses a novel hydraulic mount, which includes a rubber main spring (3), a casing (4) and a bottom film (12), a rubber main spring (3), a casing (4) and a bottom film (12 ) to form a cavity filled with magnetorheological fluid, and a vibration isolation mechanism (10) is arranged in the cavity, and the vibration isolation mechanism (10) divides the cavity into an upper liquid chamber (18) and a lower liquid chamber (17). The vibration mechanism (10) is provided with an annular coil (8), and the two ends of the annular coil (8) are connected to the power supply; the vibration isolation mechanism (10) is provided with an inertial channel (9), and an inflatable ring is arranged in the inertial channel (9). (11), the inflatable ring (11) is connected with a solenoid valve (7), and the solenoid valve (7) is connected with an air pump (6). The invention uses magnetism to adjust the damping of the hydraulic mount, and has the characteristics of simple and compact structure and easy installation.

The invention provides a method for improving vibration attenuation reliability of metal rubber joints. The two metal rubber joints, an inner cylinder and an outer cylinder are included. The method is characterized in that the outer cylinder is arranged on the periphery of the inner cylinder to form an annular cylinder; the two metal rubber joints are both installed in the portion, between the inner cylinder and the outer cylinder, of the annular cylinder in a press-fit manner; a joint bearing is arranged between the two metal rubber joints; the inner cylinder is sleeved with an inner ring of the joint bearing; an outer ring of the joint bearing makes contact with the inner surface of the outer cylinder; deformation of the metal rubber joints makes the inner ring and the outer ring of the joint bearing slide relative to each other; the axial and radial rigidity of the metal rubber joints is increased through the joint bearing; overload protection is formed for the metal rubber joints; partial torsional rigidity of the metal rubber joints is reduced through the relative sliding of the inner ring and the outer ring of the joint bearing; and the purpose of improving the vibration attenuation reliability of the metal rubber joints is achieved. The invention further provides a metal rubber joint assembly.

The invention discloses a pull rod node assembly and a design method thereof. The pull rod node assembly comprises a pull rod and a node pressed into the pull rod; the node is composed of a core shaftand rubber bonded to the core shaft in a vulcanized mode. The node is characterized in that a part, matched with the pull rod, of the node is divided into three sections, wherein a stop section is located in the middle and has a stop function, and symmetrical sections are arranged on the left side and the right side of the stop section in a mirror symmetry mode; the core shaft diameter of the stop section is larger than that of the symmetrical sections, the rubber thickness of the stop section is smaller than that of the symmetrical sections, the rubber of the stop section is in a free state,and the rubber of the symmetrical sections is in a pre-compression state. Comfortable performance is improved, rigidity requirements under large loads and damping requirements and bearing requirements of the node under different lines are met, fatigue life of products is prolonged, and safety of vehicle operation is guaranteed.

The invention discloses an intelligent self-energized absorber which comprises a piston, a piston rod, an outer cylinder and an inner cylinder. The piston rod is fixedly connected to the inner side of the outer cylinder, the piston is located inside the inner cylinder and is capable of moving up and down relative to the inner cylinder, a ball shaft sleeve is embedded on the inner wall of the outer cylinder, the outer wall of the inner cylinder is vertically sleeved with a plurality of piezoelectric rings, and the inner cylinder is then arranged in the ball shaft sleeve of the inner wall of the outer cylinder in a sleeved mode. Electrorheological elastic bodies are filled in the space, located above and below the piston, in the inner cylinder, and the electrorheological elastic bodies, the piezoelectric rings and an electronic control module are electrically connected. Energy generated by vibration of vehicles can be obtained, vehicle vibration information can be collected, the captured energy is used for supplying power for the electrorheological elastic bodies, the vibration information is used for self-adaptive control, different voltages are provided to control the damping of the electrorheological elastic bodies according to different road conditions, the absorber is made to meet the vibration reduction demands of the different road conditions, and therefore the riding comfortableness and the handling stability of vehicles can be improved.

The invention relates to an elevator tractor damper based on multilayer metal rubber. The elevator tractor damper comprises a base, wherein at least four cushion fixing seats are symmetrically arranged on the upper end surface of the base, a boss is arranged in the center of the cushion fixing seats, hemispherical high-density metal rubber is arranged above the cushion fixing seats, a groove whichis matched with the boss in the center of the cushion fixing seats so as to limit the high-density metal rubber to slide is formed in the center of the hemispherical plane of the high-density metal rubber, hemispherical low-density metal rubber is arranged above the high-density metal rubber, and a hemispherical groove which is matched with the hemispherical curved surface of the high-density metal rubber is formed in the center of the hemispherical plane of the low-density metal rubber. The invention further relates to a working method of the elevator tractor damper based on the multilayer metal rubber. According to the elevator tractor damper, vibration in all directions can be absorbed by the hemispherical high-density metal rubber and the hemispherical low-density metal rubber, and limiting can be performed by a limiting stop block.