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CN-117662683-B - Horizontal movement type inertial container with variable inertial coefficient

CN117662683BCN 117662683 BCN117662683 BCN 117662683BCN-117662683-B

Abstract

The invention discloses a horizontal movement type inertial container with a variable inertial coefficient, relates to the technical field of vibration reduction and isolation, and solves the problems of weak amplification effect, complex structure, difficult sealing and difficult adjustment of the number of inertial amplification units of the conventional inertial container. The invention comprises an inertial container core and an inertial container bracket, wherein the inertial container bracket comprises a trapezoidal screw, supporting seats and supporting rods, the supporting rods and the trapezoidal screw are arranged between the two supporting seats, the inertial container core is fixedly arranged on the supporting rods, the trapezoidal screw is meshed with the trapezoidal screw of the inertial container core through nuts, and the trapezoidal screw axially moves to drive the trapezoidal screw of the inertial container core to rotate through the nuts, the switching transition disc and the eccentric flywheel disc. The invention provides conversion from translation to rotation through the large lead angle trapezoidal screw rod, and the eccentric flywheel discs with different thicknesses provide amplification effects with variable rotational inertia, and the invention has simple mechanical form and compact logical progressive relationship between structures, and can realize adjustable and effective amplification of the inertial coefficient.

Inventors

  • YE TIANGUI
  • BAI JINLIN
  • JIN GUOYONG
  • YUAN JUNJIE

Assignees

  • 哈尔滨工程大学

Dates

Publication Date
20260508
Application Date
20231103

Claims (7)

  1. 1. A horizontal movement type inertial container with a variable inertial coefficient is characterized by comprising an inertial container core and an inertial container bracket, wherein the inertial container core is arranged on the inertial container bracket, the inertial container bracket comprises two supporting seats (15), two supporting rods (14) and a trapezoidal screw (13), the two supporting seats (15) are provided with the two supporting rods (14) and the trapezoidal screw (13) in the middle, the inertial container core is arranged on the two supporting rods (14) and the trapezoidal screw (13), the trapezoidal screw (13) penetrates through the center of the inertial container core and is in threaded engagement with the inertial container core, the inertial container core comprises an outer fixing sleeve (1), a rolling bearing (2), a transfer transition disc (3), a trapezoidal screw cap (7), a plurality of eccentric flywheel discs, two full-thread studs (11) and a plurality of nuts (12), the outer fixing sleeve (1) is connected with the rolling bearing (2), the outer ring is fixedly connected with the two supporting rods (14), the inner ring of the rolling bearing (2) is connected with the transfer transition disc (3), the trapezoidal screw (7) is arranged at the center of the transfer transition disc (3), the trapezoidal screw cap (13) penetrates through the center of the inertial container core and is in threaded engagement with the screw cap (7) at the right side of the transition disc (3) and the threaded studs (11) are in threaded engagement with the threaded transition disc (3) and the threaded disc (3) is provided with the full-thread stud (11) When the trapezoidal screw (13) moves axially, the transfer transition disc (3) and the eccentric flywheel discs are driven to rotate by the nut (7) for the trapezoidal screw; The inner ring of the outer fixing sleeve (1) is provided with a retaining shoulder, one side of the outer ring of the rolling bearing (2) leans against the retaining shoulder, and the other side of the outer ring is tightly pressed by a plurality of screws arranged on the outer fixing sleeve (1), the outer ring of the switching transition disc (3) is provided with the retaining shoulder, one side of the inner ring of the rolling bearing (2) leans against the retaining shoulder, and the other side of the inner ring is tightly pressed by a plurality of screws arranged on the switching transition disc (3); The plurality of eccentric flywheel discs comprise two small eccentric flywheel discs (8), two middle eccentric flywheel discs (9) and two large eccentric flywheel discs (10), wherein the two small eccentric flywheel discs (8) are respectively connected with the switching transition disc (3) and the trapezoidal screw rod through nuts (7), one end of the middle eccentric flywheel disc (9) is connected with the small eccentric flywheel discs (8), and the other end of the middle eccentric flywheel disc is connected with the large eccentric flywheel discs (10); the thickness of the small eccentric flywheel disc (8) is smaller than that of the medium eccentric flywheel disc (9), and the thickness of the medium eccentric flywheel disc (9) is smaller than that of the large eccentric flywheel disc (10).
  2. 2. The inertial container with the variable horizontal motion inertial coefficient according to claim 1 is characterized in that two shaft holes (101) are symmetrically formed in the outer fixing sleeve (1), and the supporting rod (14) penetrates through the shaft holes (101) and is fixedly connected with the outer fixing sleeve (1) through a plurality of bolts.
  3. 3. The inerter with variable horizontal motion inertial coefficient of claim 1, wherein the supporting seat (15) is provided with a connecting piece (18), and the connecting piece (18) is connected with an external mechanism.
  4. 4. The inertial container with variable horizontal motion inertial coefficient according to any one of claims 1-3, wherein the two supporting seats (15) comprise a first supporting seat (151) and a second supporting seat (152), the first supporting seat (151) comprises a third through hole (1501) and a fourth through hole (1502), one end of a supporting rod (14) penetrates through the fourth through hole (1502) and is fixedly connected with the first supporting seat (151) through a plurality of bolts, one end of a trapezoidal screw (13) penetrates through the third through hole (1501) and is in sliding connection with the first supporting seat (151), the second supporting seat (152) comprises a fifth through hole (1503) and a sixth through hole (1504), the other end of the supporting rod (14) penetrates through the fifth through hole (1503) and is in sliding connection with the second supporting seat (152), and the other end of the trapezoidal screw (13) penetrates through the sixth through hole (1504) and is fixedly connected with the second supporting seat (152) through a plurality of bolts.
  5. 5. The inertial container with the variable horizontal motion inertial coefficient of claim 4, wherein the first supporting seat (151) further comprises a graphite copper sleeve (17), and the graphite copper sleeve (17) is arranged in the third through hole (1501) and is in sliding connection with the trapezoidal screw rod (13).
  6. 6. The inertial container with variable horizontal motion inertial coefficient of claim 4, wherein the second supporting seat (152) further comprises two linear bearings (16), and the linear bearings (16) are arranged in the fifth through hole (1503) and are in sliding connection with the supporting rod (14).
  7. 7. The inerter with variable horizontal motion inertial coefficient of claim 1, wherein the lead angle of the trapezoidal screw (13) is greater than 45 degrees.

Description

Horizontal movement type inertial container with variable inertial coefficient Technical Field The invention relates to the technical field of vibration reduction and isolation, in particular to a horizontal movement type inertial container with a variable inertial coefficient. Background The low-frequency vibration generated by each mechanical device during the navigation of the underwater vehicle seriously affects the sound stealth performance of the underwater vehicle, and the passive vibration isolator which is commonly adopted at present obtains better medium-high frequency vibration control effect, but has the contradiction that the stability of the low-frequency vibration and the vibration isolation effect are difficult to coordinate, and the introduction of the inertial container element is one of effective and feasible means for solving the problem. Inertial is an element having two independent end points and resembling a spring and a damper, and the ratio of the force exerted on the two end points of the inertial to its relative acceleration is the inertial coefficient. The amplification effect of the motion conversion device is adopted, the inertial coefficient of the inertial container is far greater than the weight of the inertial container, and further, the inertial container, the damper, the spring and the like are combined, so that the vibration reduction and isolation effect can be effectively improved. After the processing of the inertial container sample piece is finished, the inertial coefficient of the inertial container sample piece is constant, the conventional research such as gear-rack inertial container is mainly realized by meshing between a gear and a rack, and compared with other structures, the structure has weaker amplification effect on the inertial coefficient and larger meshing friction coefficient between gears. The ball screw type inertial container mechanism has a complex structure, can be pushed in a high-energy vibration reduction and isolation system, and has more troublesome processing of the ball screw with specific requirements and limited practical value of partial engineering. Although the hydraulic inertial volume can realize a more excellent inertial amplification effect, the fluid pipeline is difficult to seal, has weak anti-leakage capability and high processing precision requirement. In addition, the structure lacks standard adjustable design, after the structure is manufactured and realized, the inertial amplification unit is difficult to increase or reduce according to actual needs, the vibration isolation interval of equipment such as an underwater vehicle is limited, and when general inertial elements are vertically arranged, the effective interval is exceeded. Disclosure of Invention The invention provides a horizontal movement type inertial container with variable inertial coefficients, which aims to solve the problems that in the prior art, the amplification effect of a rack-and-pinion type inertial container is weak, the mechanical structure of a ball screw type inertial container is complex, the sealing of a hydraulic type inertial container pipeline is difficult, the number of inertial amplification units is difficult to adjust according to actual needs, the vibration isolation interval of equipment such as an underwater vehicle is limited and the like. The invention provides conversion from translation to rotation through the large lead angle trapezoidal screw, and the eccentric flywheel discs with different thicknesses provide amplification effects with variable rotational inertia, and the invention has simple mechanical form and compact logic progressive relation among structures, is easy to select and implement a standardized element, and can realize adjustable and effective amplification of inertial coefficient. The invention provides a horizontal movement type inertial container with a variable inertial coefficient, which specifically comprises an inertial container core and an inertial container bracket, wherein the inertial container core is arranged on the inertial container bracket, the inertial container bracket comprises two supporting seats, two supporting rods and a trapezoidal screw rod, the two supporting seats are provided with the two supporting rods and the trapezoidal screw rod in the middle, the inertial container core is arranged on the two supporting rods and the trapezoidal screw rod, the trapezoidal screw rod passes through the center of the inertial container core and is in threaded engagement with the center of the inertial container core, the inertial container core comprises an outer fixing sleeve, a rolling bearing, a transfer transition disc, a nut for the trapezoidal screw rod, a plurality of eccentric flywheel discs, two full-thread studs and a plurality of nuts, an inner ring of the outer fixing sleeve is connected with the rolling bearing, the outer ring is fixedly connected with the two supporting rods, the rolli