A rubber vibration damping system and a method for adjusting the horizontal stiffness of the rubber vibration damping system
A technology of rubber vibration reduction and adjustment method, which is applied in the field of inertial navigation and achieves the effects of wide application prospects, reduction of horizontal force anisotropy, and improvement of environmental adaptability
Active Publication Date: 2022-04-12
TIANJIN NAVIGATION INSTR RES INST
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[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a rubber vibration damping system that can effectively realize the three-way equal stiffness of the rubber vibration damping system, thereby solving the actual needs of inertial equipment and the level of the rubber vibration damping system Stiffness adjustment method
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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0030] A rubber damping system, see Figure 1-3 , mainly including an inertia assembly 1, a base 2, four eccentric stepped shafts 3, and a plurality of damping rubber sleeves.
[0031] The inertia assembly adopts a symmetrical structure in which four mounting holes are evenly distributed along the circumferential direction on the waist, and the installation positions of the four mounting holes are coplanar with the center of mass of the inertia assembly.
[0032] The upper end of the base is provided with four shaft jacks, the four shaft jacks correspond to the four mounting holes on the inertia assembly, and the lower end of each shaft jack is concentrically connected with a screw mounting hole;
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The invention relates to a rubber vibration damping system and a method for adjusting the horizontal stiffness of the rubber vibration damping system. The system includes an inertia assembly, a base, four eccentric stepped shafts, and a plurality of vibration damping rubber sleeves; the lower shaft section of the four eccentric stepped shafts Insert and fit with the four shaft sockets on the base one by one, and be fixed by screws; the upper shaft sections of the four eccentric stepped shafts are fitted with the four mounting holes on the inertial assembly one by one, and the eccentric stepped shaft The center distance between the upper shaft sections is consistent with the center distance between the corresponding mounting holes on the inertia assembly; a vibration-damping rubber sleeve is inserted at the upper end and the lower end of the matching part of the upper shaft section and the corresponding mounting hole, respectively. The upper part of the vibration-damping rubber sleeve located at the upper end of the eccentric stepped shaft is fitted with a pressure plate, and a lock nut threaded with the eccentric stepped shaft is arranged on the upper end of the pressure plate, so that the inertia assembly is fixed on the eccentric stepped shaft and the vibration-damping rubber sleeve. above the base. The invention ensures the three-way equal stiffness characteristics of the rubber vibration damping system.
Description
technical field [0001] The invention belongs to the technical field of inertial navigation, relates to inertial equipment installation technology, and in particular to a rubber damping system and a method for adjusting the horizontal stiffness of the rubber damping system. Background technique [0002] Conventionally, the lower vibration-absorbing rubber is assembled at the foot position between the base and the inertial equipment, or assembled inside the inertial equipment to connect the base and the inertial assembly (IMU). The vibration-absorbing rubber is usually fixed to both ends by screws. Assembled, the rubber damping system does not have three-way equal stiffness characteristics. Moreover, processing errors and assembly errors will lead to over-positioning of the vibration-damping rubber after assembly, causing unexpected deformation of the vibration-damping rubber, which in turn affects the horizontal stiffness of the vibration-damping rubber. [0003] Therefore, ...
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IPC IPC(8): F16F1/373
CPCF16F1/3732
Inventor 王凯谢振徐凯宋高玲赵鑫范志成
Owner TIANJIN NAVIGATION INSTR RES INST