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CN-122014793-A - Multi-directional constraint vibration reduction and isolation device for marine tool

CN122014793ACN 122014793 ACN122014793 ACN 122014793ACN-122014793-A

Abstract

The invention relates to the technical field of vibration reduction and isolation of marine equipment, and discloses a multi-directional constraint vibration reduction and isolation device for marine equipment, which comprises a mounting connecting plate, a supporting block and a base, wherein the base is integrally formed at the bottom of the supporting block, the mounting connecting plate is fixedly arranged at the top of the supporting block, an annular cavity is formed in the supporting block, an adjusting mechanism is arranged in the annular cavity, and a vibration reduction mechanism is arranged in the base.

Inventors

  • LI WEI
  • WU BEIBEI
  • LIU LIANJIE
  • WU QIONG
  • LU SHIAN

Assignees

  • 江苏力汇振控科技有限公司

Dates

Publication Date
20260512
Application Date
20260407

Claims (10)

  1. 1. The utility model provides a reserve multidirectional restraint vibration damping vibration isolation device of sea frock, including installation connecting plate (1), supporting shoe (2) and base (3), base (3) integrated into one piece is in the bottom of supporting shoe (2), installation connecting plate (1) fixed mounting is at the top of supporting shoe (2), a serial communication port, annular cavity (5) have been seted up to the inside of supporting shoe (2), the inside of annular cavity (5) is provided with adjustment mechanism (4), the inside of base (3) is provided with vibration damping mechanism (6), the bottom fixedly connected with isolator (7) of base (3); The vibration reduction mechanism (6) comprises a first partition plate (61) arranged at the joint of the supporting block (2) and the base (3), the first partition plate (61) is positioned at the bottom of the annular cavity (5) and used for separating the supporting block (2) from the base (3), a second partition plate (63) is inserted into the first partition plate (61) along the radial direction, the second partition plate (63) is positioned at the six equal-dividing point of the first partition plate (61), a fan-shaped subchamber is formed between two adjacent second partition plates (63) below the first partition plate (61), liquid is filled in the fan-shaped subchamber, the liquid is sea water or fresh water added with preservative, the filling quantity is 30% -50% of the total volume of the fan-shaped subchamber, when the vibration reduction mechanism is used, the liquid in the fan-shaped subchamber is synchronous in the direction of the partition of the second partition plate (63), the liquid shaking frequency is consistent with the natural frequency of the platform, the inertial force opposite to the vibration direction of the platform is generated, the swinging of the platform is counteracted, the friction between the liquid and the chamber wall is used for converting vibration energy into heat energy to be heat energy, and the vibration amplitude of the platform is reduced.
  2. 2. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 1, wherein the plate body of the first partition plate (61) is provided with ventilation holes (62) at equal intervals, each ventilation hole (62) is independently communicated with a fan-shaped subchamber, and when liquid in the fan-shaped subchamber shakes, air in the chamber is exchanged with outside air from the ventilation holes (62).
  3. 3. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 2, wherein a supporting column (610) is axially arranged at the center of the lower surface of the first partition plate (61), the supporting column (610) is fixedly connected with a substrate at the bottom of the base (3), the edge of one side of the second partition plate (63) is slidably connected with the edge of the supporting column (610), and the edge of the other side of the second partition plate (63) is slidably connected with the inner side wall of the base (3).
  4. 4. A multi-directional constraint vibration damping and isolation device for a marine tool according to claim 3, wherein a cavity (611) is formed in the second partition plate (63), a blocking plate (68) is inserted into the first partition plate (61) through the cavity (611), communication ports (67) penetrating through the second partition plate (63) are formed in two sides of the bottom of the cavity (611), and the blocking plate (68) is located between the two communication ports (67).
  5. 5. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 3, wherein the adjusting mechanism (4) comprises a supporting plate (41) and a servo motor (42) fixedly installed at the top of the supporting plate (41), the bottom of the supporting plate (41) is fixedly connected with the upper surface of the first partition plate (61), the supporting plate (41) and the second partition plate (63) are correspondingly arranged, a containing cavity (48) is formed in the supporting plate (41), and the shape of the containing cavity (48) is matched with that of the second partition plate (63).
  6. 6. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 5, wherein a strip-shaped hole (64) is formed in the plate body of the first partition plate (61), the top end of the second partition plate (63) is located in the strip-shaped hole (64), the strip-shaped hole (64) is located under the accommodating cavity (48), and the strip-shaped hole (64) and the air holes (62) are annularly arranged at intervals.
  7. 7. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 6, wherein an extension piece (65) is arranged at the corner of the top of the second partition plate (63), a limit groove (66) is formed at the joint of the strip-shaped hole (64) and the edge of the first partition plate (61), the extension piece (65) is lapped on the inner side of the limit groove (66), a screw rod (44) is rotatably arranged at the bottom of the inner side of the limit groove (66), and the screw rod (44) is in threaded connection with the extension piece (65).
  8. 8. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 7, wherein the top of the screw rod (44) and the output end of the servo motor (42) are fixedly provided with conical gears (47), the two conical gears (47) are meshed, the servo motor (42) drives the screw rod (44) to move the second partition plate (63) up and down through the meshing transmission of the conical gears (47), two adjacent fan-shaped subchambers are communicated, and liquid level sensors (69) are arranged on two sides of the second partition plate (63).
  9. 9. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 5, wherein an electromagnetic block (46) is fixedly arranged at the top of the supporting plate (41), the electromagnetic block (46) is located at one end far away from the servo motor (42), a power supply module (43) is fixedly arranged at the top of the supporting column (610), and a wiring terminal of the electromagnetic block (46) is connected with the power supply module (43) and used for controlling magnetic force of the electromagnetic block (46).
  10. 10. The multi-directional constraint vibration damping and isolation device for the marine tool according to claim 8, wherein a protection box (45) is arranged at the corner of the top of the supporting plate (41), two bevel gears (47) are both positioned in the protection box (45), and a screw rod (44) is rotatably connected with the protection box (45).

Description

Multi-directional constraint vibration reduction and isolation device for marine tool Technical Field The invention belongs to the technical field of vibration reduction and isolation of sea tools, and particularly relates to a standby multidirectional constraint vibration reduction and isolation device for a sea tool. Background The marine environment is complicated and changeable, factors such as wave impact, equipment operation can lead to marine equipment to produce multi-direction, irregular vibration, and long-term vibration not only can influence equipment operation precision, shorten life, can also cause structural fatigue damage, threatens platform safety. Most of the existing vibration reduction and isolation devices adopt linear damping structures (such as unidirectional springs and dampers), damping force can be provided only in preset single dimensions (up and down or left and right), and multi-directional compound vibration such as rolling, pitching, heave and the like can be generated when sea equipment is impacted by sea waves, so that vibration in a non-preset direction can not be effectively inhibited; And the other part can provide a multidimensional vibration damping device, vibration damping parameters (such as damping direction and frequency matching range) of the multidimensional vibration damping device are fixed after leaving a factory, and the multidimensional vibration damping device can not be adaptively adjusted according to vibration intensity and direction change caused by sea conditions (such as calm sea surface and high wind and high sea), can only adapt to single working condition, has poor universality, has poor vibration transmission blocking effect and can not realize full-flow vibration suppression. Disclosure of Invention The invention provides a multi-directional constraint vibration reduction and isolation device for a marine tool, which solves the technical problems of single vibration reduction direction, limited efficiency and poor adaptability in the related technology. The invention provides a standby multidirectional constraint vibration reduction and isolation device for a sea tool, which comprises a mounting connecting plate, a supporting block and a base, wherein the base is integrally formed at the bottom of the supporting block; The vibration reduction mechanism comprises a first partition plate arranged at the joint of the support block and the base, the first partition plate is positioned at the bottom of the annular cavity and used for separating the support block from the base, a second partition plate is inserted into the first partition plate along the radial direction, the second partition plate is positioned at the six equal-partition point of the first partition plate, a fan-shaped subchamber is formed below the first partition plate between two adjacent second partition plates, liquid is filled in the fan-shaped subchamber and is sea water or fresh water added with preservative, the filling amount is 30% -50% of the total volume of the fan-shaped subchamber, when the vibration reduction mechanism is used, the liquid in the fan-shaped subchamber synchronously shakes along the direction separated by the second partition plate, the shaking frequency of the liquid is consistent with the inherent frequency of the platform, the inertial force opposite to the vibration direction of the platform is generated, the swinging of the platform is counteracted, the friction between the liquid and the cavity wall converts vibration energy into heat energy to be dissipated, and the vibration amplitude of the platform is reduced. In a preferred embodiment, the plate body of the first partition plate is provided with air holes at equal intervals, each air hole is separately communicated with a fan-shaped subchamber, and when liquid in the fan-shaped subchamber shakes, air in the chamber is exchanged with outside air from the air holes. In a preferred embodiment, a support column is axially arranged at the center of the lower surface of the first partition plate, the support column is fixedly connected with the base plate at the bottom of the base, the edge of one side of the second partition plate is in sliding connection with the edge of the support column, and the edge of the other side of the second partition plate is in sliding connection with the inner side wall of the base. In a preferred embodiment, the second partition plate is provided with a cavity, the first partition plate is inserted into the cavity through a blocking plate, two sides of the bottom of the cavity are provided with communication ports penetrating through the second partition plate, and the blocking plate is located between the two communication ports. In a preferred embodiment, the adjustment mechanism comprises a support plate and a servo motor fixedly mounted at the top of the support plate, the bottom of the support plate is fixedly connected with the upper surface of the first partit