CN109916353B - Device and method for monitoring bidirectional displacement of floating raft - Google Patents
Device and method for monitoring bidirectional displacement of floating raft Download PDFInfo
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- CN109916353B CN109916353B CN201910258209.0A CN201910258209A CN109916353B CN 109916353 B CN109916353 B CN 109916353B CN 201910258209 A CN201910258209 A CN 201910258209A CN 109916353 B CN109916353 B CN 109916353B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 66
- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 76
- 238000004904 shortening Methods 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 abstract description 14
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- WCERXPKXJMFQNQ-UHFFFAOYSA-N [Ti].[Ni].[Cu] Chemical compound [Ti].[Ni].[Cu] WCERXPKXJMFQNQ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses a device and a method for monitoring bidirectional displacement of a floating raft, and belongs to the technical field of vibration isolation of floating rafts. The device for monitoring the bidirectional displacement of the buoyant raft comprises: the turntable rotates on a vertical surface around the rotating shaft; the sensor is arranged on the circumferential surface of the turntable; the turntable is provided with two tracks which are centrosymmetric with the circle center of the turntable as a symmetry center, and the depth of the grooves of the tracks is gradually increased from one end of the track to the other end of the track; the two driving balls are in one-to-one correspondence with the two tracks, the two driving balls are in central symmetry by taking the circle center of the turntable as the symmetry center, and the driving balls are slidably arranged in the corresponding tracks; the two memory alloy wires are in one-to-one correspondence with the two driving balls, and the memory alloy wires penetrate through the turntable and are connected with the corresponding driving balls. The device and the method for monitoring the bidirectional displacement of the buoyant raft can convert the direction of the sensor probe, monitor the vertical displacement and the transverse displacement of the buoyant raft through the single displacement sensor, and have strong environmental adaptability to the displacement monitoring of the buoyant raft.
Description
Technical Field
The invention relates to the technical field of vibration isolation of floating rafts, in particular to a device and a method for monitoring bidirectional displacement of a floating raft.
Background
In the field of ships, the integrated vibration reduction is carried out on running equipment such as a unit by adopting the floating raft vibration isolation device, so that the effects of vibration reduction and noise reduction can be achieved. The floating raft vibration isolation device generally refers to that different units are respectively arranged on a public frame through a damper, then the public frame is arranged on a ship body structure through the damper, and vibration isolation and damping are realized on a vibration transmission path by utilizing the mass effect of the public frame, the elastic characteristic and the damping characteristic of the damper. Meanwhile, as the shock absorber with elastic characteristic is additionally arranged between the public frame and the hull structure, the posture of the floating raft vibration isolation device can be changed along with the stress state and the posture of the hull, and the floating raft vibration isolation device is usually expressed as vertical, horizontal and longitudinal displacement, and the displacement value is closely related to the operation safety and the performance of integrated equipment on the floating raft vibration isolation device, and also affects the safety and the service life of the shock absorber.
Therefore, it is necessary to monitor the displacement of the raft vibration isolation device. The displacement of the floating raft vibration isolation device is usually dynamic displacement, the displacement direction of the target structure is changeable, the displacement speed is high, the middle state cannot be maintained, and a plurality of sensors are needed to monitor the displacement of the floating raft vibration isolation device.
However, because the installation position of the floating raft vibration isolation device on the ship is usually small in space and bad in environment, the design and arrangement of the displacement monitoring sensor can be affected, and finally the displacement of the floating raft vibration isolation device cannot be monitored.
Disclosure of Invention
The invention provides a bidirectional displacement monitoring device for a floating raft, which solves or partially solves the technical problem that the installation position of a vibration isolation device of the floating raft is usually narrow in space and cannot be provided with a plurality of sensors for monitoring in the prior art.
In order to solve the technical problems, the invention provides a device for monitoring bidirectional displacement of a floating raft, which comprises: the device comprises a turntable, a sensor, a rotating shaft, two driving balls and two memory alloy wires; the rotating disc rotates on the vertical surface around the rotating shaft; the sensor is arranged on the circumferential surface of the turntable; the turntable is provided with two tracks, the two tracks are centrosymmetric by taking the circle center of the turntable as the symmetry center, and the depth of the grooves of the tracks is gradually increased from one end of the track to the other end of the track; the two driving balls are in one-to-one correspondence with the two tracks, the two driving balls are in central symmetry with the center of the circle of the turntable as a symmetry center, and the driving balls are slidably arranged in the corresponding tracks; the two memory alloy wires are in one-to-one correspondence with the two driving balls, and the memory alloy wires penetrate through the rotary table to be connected with the corresponding driving balls.
Further, the shape of the track is arc-shaped.
Further, the radian of the track is consistent with the radian of the circumferential surface of the rotating disc.
Further, the setting position of one of the two memory alloy wires is flush with the minimum depth of the groove of the track;
the other memory alloy wire of the two memory alloy wires is arranged at the same level with the maximum depth of the groove of the track.
Further, the maximum depth of the grooves of the two tracks is centrosymmetric by taking the circle center of the turntable as the symmetry center; the minimum depth of the grooves of the two tracks is centrosymmetric by taking the circle center of the turntable as a symmetry center; the position of the sensor corresponds to a position where the groove depth of one of the two tracks is the smallest.
Based on the same inventive concept, the invention also provides a method for monitoring the bidirectional displacement of the floating raft, which comprises the following steps: electrifying one of the two memory alloy wires, shortening the memory alloy wire, and pulling the corresponding driving ball; the driving balls generate pressure in the corresponding tracks, so that the turntable rotates relative to the driving balls, and the driving balls reach the position with the largest groove depth of the tracks from the position with the smallest groove depth of the tracks; the turntable drives the sensor to reach the monitoring position, and the sensor detects the displacement of the buoyant raft.
Further, when the vertical displacement of the buoyant raft is to be monitored; electrifying a first memory alloy wire in the two memory alloy wires, shortening the first memory alloy wire, and pulling a corresponding first driving ball in the two driving balls; the first driving balls generate pressure in corresponding first tracks in the two tracks, so that the turntable rotates relative to the first driving balls, and the first driving balls reach the position with the largest groove depth of the first tracks from the position with the smallest groove depth of the first tracks; the turntable drives the sensor to reach a vertical monitoring position, and the sensor detects the vertical displacement of the buoyant raft.
Further, the pressure generated by the first driving ball enables the turntable to rotate anticlockwise.
Further, when the lateral displacement of the buoyant raft is to be monitored; powering off the first memory alloy wire, and elongating the first memory alloy wire; energizing a second memory alloy wire in the two memory alloy wires, shortening the second memory alloy wire, and pulling a corresponding second driving ball in the two driving balls; the second driving balls generate pressure in the corresponding second tracks in the two tracks, so that the turntable rotates relative to the second driving balls; the second driving ball reaches the position with the largest groove depth of the second track from the position with the smallest groove depth of the second track, and the first driving ball reaches the position with the smallest groove depth of the first track from the position with the largest groove depth of the first track; the turntable drives the sensor to reach a transverse monitoring position, and the sensor detects the transverse displacement of the buoyant raft.
Further, the pressure generated by the second driving ball rotates the turntable clockwise.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
because the carousel rotates on vertical face around the pivot, the sensor sets up on the periphery of carousel, two tracks have been seted up on the carousel, two tracks are central symmetry with the centre of a circle of carousel as the symmetry center, orbital recess degree of depth is by orbital one end to the other end increase gradually, two drive balls and two tracks one-to-one, two drive balls are central symmetry with the centre of a circle of carousel as the symmetry center, the drive ball slidable sets up in corresponding track, two memory alloy silk and two drive balls one-to-one, the memory alloy silk passes the carousel and is connected with corresponding drive ball, therefore, can pull the drive ball through memory alloy silk circular telegram shrink, make the drive ball produce pressure in the recess, make the carousel rotate for the drive ball, the drive ball reaches orbital recess degree of depth maximization from orbital recess degree of depth department by orbital recess, the carousel drives the sensor and arrives the monitoring position, the sensor detects the displacement of raft, can change the direction of sensor probe, monitor the vertical and horizontal displacement of raft through single displacement sensor, environmental suitability for the monitoring of raft.
Drawings
Fig. 1 is a front view of a bi-directional displacement monitoring device for a buoyant raft according to an embodiment of the invention;
fig. 2 is a view in the direction a of fig. 1.
Detailed Description
Referring to fig. 1-2, a bi-directional displacement monitoring device for a buoyant raft provided by an embodiment of the invention includes: the rotary table 1, the sensor 2, the rotary shaft 3, two driving balls 4 and two memory alloy wires 5.
The turntable 1 rotates on a vertical plane around the rotating shaft 3.
The sensor 2 is provided on the circumferential surface of the turntable 1.
Two tracks 6 are arranged on the turntable 1, the two tracks 6 are centrosymmetric by taking the circle center of the turntable 1 as the symmetry center, and the groove depth of the track 5 is gradually increased from one end of the track to the other end of the track.
The two driving balls 4 are in one-to-one correspondence with the two tracks 6, the two driving balls 4 are in central symmetry with the circle center of the turntable 1 as a symmetry center, and the driving balls 4 are slidably arranged in the corresponding tracks 6.
The two memory alloy wires 5 are in one-to-one correspondence with the two driving balls 4, and the memory alloy wires penetrate through the turntable 1 and are connected with the corresponding driving balls 4.
According to the specific embodiment of the application, as the turntable 1 rotates on the vertical surface around the rotating shaft 3, the sensor 2 is arranged on the circumferential surface of the turntable 1, two tracks 6 are arranged on the turntable 1, the centers of the two tracks 6 are symmetrical with each other in the center, the groove depth of each track 5 is gradually increased from one end of the track to the other end, the two driving balls 4 are in one-to-one correspondence with the two tracks 6, the two driving balls 4 are symmetrical in the center of the circle of the turntable 1, the driving balls 4 are slidably arranged in the corresponding tracks 6, the two memory alloy wires 5 are in one-to-one correspondence with the two driving balls 4, the memory alloy wires penetrate through the turntable 1 and are connected with the corresponding driving balls 4, so that the driving balls 4 can be pulled by electrifying and contracting the memory alloy wires 5, pressure is generated in the grooves, the turntable 1 rotates relative to the driving balls 4 on the rotating shaft 3, the turntable 1 reaches the position of the maximum groove depth of the track 6 from the minimum position of the groove depth of the track 6, the turntable 1 drives the sensor 2 to the monitoring position, the sensor 2 detects the displacement of the probe, the sensor 2 can convert the vertical displacement of the sensor into the displacement of the raft, and the displacement of the raft can be monitored by the sensor to the displacement of the sensor in the transverse direction and the displacement of the raft.
The structure of the track 6 will be described in detail.
The track 6 is arc-shaped, and the radian of the track 6 is consistent with the radian of the circumferential surface of the turntable 1.
The maximum groove depth of the two tracks 6 is symmetrical by taking the central line of the turntable as a symmetrical axis; the minimum groove depth of the two tracks 6 is symmetrical by taking the central line of the turntable as a symmetrical axis.
The position of the sensor 2 corresponds to the position where the groove depth of one of the two tracks 6 is the smallest, and the monitoring range of the sensor 2 is ensured.
The structure of the rail memory alloy wire 5 will be described in detail.
One of the memory alloy wires 5 is arranged at a position flush with the minimum depth of the groove of the track 6,
the other memory alloy wire 5 is arranged at the same level as the maximum depth of the groove of the track
The memory alloy wire 5 can drive the driving ball to reach the position with the maximum groove depth of the track 6 from the position with the minimum groove depth of the track 6.
The shape memory alloy is a novel material with dual functions of sensing and driving, the driving force and the action stroke generated in the deformation process can be controlled through heating and cooling, and the shape memory alloy is mostly applied to the driving field in the past by utilizing the shape memory effect, such as a memory alloy spring, a memory alloy beam and the like, and the structure needs training and learning of the memory alloy unit, so the manufacturing cost is high. The price of the wire-shaped NiTiCu (nickel titanium copper) memory alloy is usually less than 1 yuan, and the memory alloy wire shows good elasticity at low temperature, can be stretched along with external force, induces martensitic transformation at high temperature, outputs restoring force and generates restoring deformation. When the expansion rate of the memory alloy wire is not more than 5%, the reciprocation process can be hundreds of thousands times. Thus, the memory alloy wire 5 of the present application is a wire-shaped NiTiCu memory alloy.
Based on the same inventive concept, the invention also provides a method for monitoring the bidirectional displacement of the floating raft, which comprises the following steps:
and 1, electrifying one of the two memory alloy wires 5, shortening the memory alloy wire, and pulling the corresponding driving ball 4.
In step 2, the driving ball 4 generates pressure in the corresponding track 6, so that the turntable 1 rotates relative to the driving ball 4, and the driving ball 4 reaches the position with the largest groove depth of the track 6 from the position with the smallest groove depth of the track 6.
And 3, the turntable 1 drives the sensor 2 to reach the monitoring position, and the sensor 2 detects the displacement of the buoyant raft.
Step 2 is described in detail.
When the vertical displacement of the buoyant raft is to be monitored.
The first memory alloy wire 5-1 of the two memory alloy wires 5 is electrified, the first memory alloy wire 5-1 is shortened, and the corresponding first driving ball 4-1 of the two driving balls 4 is pulled.
The first driving ball 4-1 generates pressure in the corresponding first track 6-1 in the two tracks 6, so that the turntable 1 rotates relative to the first driving ball 4-1, and the first driving ball 4-1 reaches the position with the largest groove depth of the first track 6-1 from the position with the smallest groove depth of the first track 6-1.
The turntable 1 drives the sensor 2 to reach a vertical monitoring position, and the sensor 2 detects the vertical displacement of the buoyant raft.
The pressure generated by the first driving ball 4-1 rotates the turntable 1 counterclockwise.
When the lateral displacement of the buoyant raft is to be monitored.
The first memory alloy wire 5-1 is powered off, and the first memory alloy wire 5-1 is elongated.
And electrifying the second memory alloy wire 5-2 in the two memory alloy wires, shortening the second memory alloy wire 5-2, and pulling the corresponding second driving ball 4-2 in the two driving balls 4.
The second driving ball 4-2 generates a pressure in the corresponding second track 6-2 of the two tracks 6, causing the turntable 1 to rotate relative to the second driving ball 6-2.
The second driving ball 4-2 reaches the maximum groove depth of the second track 6-2 from the minimum groove depth of the second track 6-2, and the first driving ball 4-1 reaches the minimum groove depth of the first track 6-1 from the maximum groove depth of the first track 6-1.
The turntable 1 drives the sensor 2 to reach the transverse monitoring position, and the sensor 2 detects the transverse displacement of the buoyant raft.
The pressure generated by the second driving ball 4-2 rotates the turntable 1 clockwise.
In order to more clearly describe the embodiments of the present invention, the following description is made on the method of using the embodiments of the present invention.
Referring to fig. 2, the minimum groove depth of the first track 6-1 is a, the maximum groove depth of the first track 6-1 is B, and the groove depth of the first track 6-1 gradually increases from a to B. The minimum of the groove depth of the second track 6-2 is D, the maximum of the groove depth of the second track 6-2 is C, and the groove depth of the second track 6-2 gradually increases from the D to the C. The first memory alloy wire 5-1 is arranged at a position corresponding to the position A, the second memory alloy wire 5-2 is arranged at a position corresponding to the position C, and the sensor 2 is arranged at a position corresponding to the position D.
When the vertical displacement of the buoyant raft is to be monitored.
The first memory alloy wire 5-1 is electrified, the first memory alloy wire 5-1 is shortened, and the first driving ball 4-1 is pulled. The first driving ball 4-1 generates pressure in the first track 6-1, so that the turntable 1 rotates around the rotating shaft 2 relative to the first driving ball 4-1, and the first driving ball 4-1 reaches the position B of the first track 6-1 from the position A of the first track 6-1. At this time, the second driving ball 4-2 is located at D of the second rail 6-2.
The pressure generated by the first driving ball 4-1 makes the turntable 1 rotate anticlockwise, the turntable 1 drives the sensor 2 to reach a vertical monitoring position, and the sensor 2 detects the vertical displacement of the buoyant raft.
When the lateral displacement of the buoyant raft is to be monitored.
The first memory alloy wire 5-1 is powered off, and the first memory alloy wire 5-1 is elongated. The second memory alloy wire 5-2 is electrified, the second memory alloy wire 5-2 is shortened, and the second driving ball 4-2 is pulled. The second driving ball 4-2 generates a pressure in the second rail 6-2, which rotates the turntable 1 with respect to the second driving ball 6-2. The second driving ball 4-2 reaches the C of the second track 6-2 from the D of the second track 6-2, and the first driving ball 4-1 reaches the groove A of the first track 6-1 from the B of the first track 6-1.
The pressure generated by the second driving ball 4-2 makes the turntable 1 rotate clockwise, the turntable 1 drives the sensor 2 to reach the transverse monitoring position, and the sensor 2 detects the transverse displacement of the buoyant raft.
The two memory alloy wires 5 can selectively control the single sensor 2 to monitor the horizontal and vertical displacement of the floating raft, and the device has the advantages of simple structure, high integration, high efficiency, low price and strong environmental adaptability to the monitoring of the displacement of the floating raft.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (8)
1. A bi-directional displacement monitoring device for a buoyant raft, comprising: the device comprises a turntable, a sensor, a rotating shaft, two driving balls and two memory alloy wires;
the rotating disc rotates on the vertical surface around the rotating shaft;
the sensor is arranged on the circumferential surface of the turntable;
the turntable is provided with two tracks, the two tracks are centrosymmetric by taking the circle center of the turntable as the symmetry center, and the depth of the grooves of the tracks is gradually increased from one end of the track to the other end of the track;
the two driving balls are in one-to-one correspondence with the two tracks, the two driving balls are in central symmetry with the center of the circle of the turntable as a symmetry center, and the driving balls are slidably arranged in the corresponding tracks;
the two memory alloy wires are in one-to-one correspondence with the two driving balls, and the memory alloy wires penetrate through the rotary table to be connected with the corresponding driving balls;
the shape of the track is arc-shaped;
the setting position of one of the two memory alloy wires is flush with the minimum depth of the groove of the track;
the other memory alloy wire of the two memory alloy wires is arranged at the same level with the maximum depth of the groove of the track.
2. The buoyant raft bi-directional displacement monitoring device of claim 1 wherein:
the radian of the track is consistent with the radian of the circumferential surface of the rotating disc.
3. The buoyant raft bi-directional displacement monitoring device of claim 1 wherein:
the maximum depth of the grooves of the two tracks is centrally symmetrical by taking the circle center of the turntable as a symmetry center;
the minimum depth of the grooves of the two tracks is centrosymmetric by taking the circle center of the turntable as a symmetry center;
the position of the sensor corresponds to a position where the groove depth of one of the two tracks is the smallest.
4. A method for monitoring bidirectional displacement of a buoyant raft, based on the device for monitoring bidirectional displacement of a buoyant raft according to any one of claims 1-3, wherein the method for monitoring bidirectional displacement of a buoyant raft comprises the following steps:
electrifying one of the two memory alloy wires, shortening the memory alloy wire, and pulling the corresponding driving ball;
the driving balls generate pressure in the corresponding tracks, so that the turntable rotates relative to the driving balls, and the driving balls reach the position with the largest groove depth of the tracks from the position with the smallest groove depth of the tracks;
the turntable drives the sensor to reach the monitoring position, and the sensor detects the displacement of the buoyant raft.
5. The method for monitoring bidirectional displacement of a buoyant raft according to claim 4 wherein:
when the vertical displacement of the buoyant raft is to be monitored;
electrifying a first memory alloy wire in the two memory alloy wires, shortening the first memory alloy wire, and pulling a corresponding first driving ball in the two driving balls;
the first driving balls generate pressure in corresponding first tracks in the two tracks, so that the turntable rotates relative to the first driving balls, and the first driving balls reach the position with the largest groove depth of the first tracks from the position with the smallest groove depth of the first tracks;
the turntable drives the sensor to reach a vertical monitoring position, and the sensor detects the vertical displacement of the buoyant raft.
6. The method for monitoring bidirectional displacement of a buoyant raft according to claim 5 wherein:
the pressure generated by the first driving ball enables the turntable to rotate anticlockwise.
7. The method for monitoring bidirectional displacement of a buoyant raft according to claim 5 wherein:
when the transverse displacement of the buoyant raft is to be monitored;
powering off the first memory alloy wire, and elongating the first memory alloy wire;
energizing a second memory alloy wire in the two memory alloy wires, shortening the second memory alloy wire, and pulling a corresponding second driving ball in the two driving balls;
the second driving balls generate pressure in the corresponding second tracks in the two tracks, so that the turntable rotates relative to the second driving balls;
the second driving ball reaches the position with the largest groove depth of the second track from the position with the smallest groove depth of the second track, and the first driving ball reaches the position with the smallest groove depth of the first track from the position with the largest groove depth of the first track;
the turntable drives the sensor to reach a transverse monitoring position, and the sensor detects the transverse displacement of the buoyant raft.
8. The method for monitoring bidirectional displacement of a buoyant raft according to claim 7 wherein:
the pressure generated by the second driving ball makes the turntable rotate clockwise.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910258209.0A CN109916353B (en) | 2019-04-01 | 2019-04-01 | Device and method for monitoring bidirectional displacement of floating raft |
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| CN201910258209.0A CN109916353B (en) | 2019-04-01 | 2019-04-01 | Device and method for monitoring bidirectional displacement of floating raft |
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