CN110758670A - Double-rod ship wave-resistant performance tester - Google Patents
Double-rod ship wave-resistant performance tester Download PDFInfo
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- CN110758670A CN110758670A CN201911049607.8A CN201911049607A CN110758670A CN 110758670 A CN110758670 A CN 110758670A CN 201911049607 A CN201911049607 A CN 201911049607A CN 110758670 A CN110758670 A CN 110758670A
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Abstract
The invention provides a double-rod ship wave resistance tester, which comprises a support frame, a first test rod and a second test rod, wherein the first test rod and the second test rod are arranged on the support frame and can be connected with a ship model, and the double-rod ship wave resistance tester is characterized in that: be equipped with on the support frame and drive the steering drive mechanism that the support frame turned to, the both ends of support frame all have the perforation, first test bar and second test bar wear to locate respectively in the perforation, first test bar and second test bar can be in the up-and-down motion in the perforation still including detecting the displacement sensor of first test bar and second test bar lifting and lowering capacity. By adopting the structure, the dynamic operation data and the attitude data of the ship can be measured, and the durability is high. Compared with the existing equipment, the lifting device has great lifting effect and can be better applied to ship design work.
Description
Technical Field
The invention belongs to the field of ship engineering, and particularly relates to a double-rod ship wave-resistant performance tester.
Background
The wave resistance performance tester is a device for simulating the wave resistance of a ship under a wave condition, mainly comprises a support frame and a test rod arranged in the support frame, wherein the test rod can be used for connecting a ship model. When the test rod is used, the ship model is connected to the test rod and is placed in the experimental water pool, waves are made in the experimental water pool, the ship model is made to advance in a wave-facing direction, and the wave-facing performance of the ship model in a certain specific direction is measured. However, the above device has the following drawbacks: first, the existing devices can only measure the wave-resistant data of the ship model in a specific orientation, and the actual ship operation conditions are dynamic, such as steering, s-shaped advancing and the like, and the existing testing devices are difficult to measure the wave-resistant data in the dynamic operation conditions. Secondly, the existing device is only provided with a testing rod connected with the ship model, so that the connection is fragile, and the attitude data of the ship model, such as the pitch angle of the ship model, cannot be measured. In summary, the existing wave-resistant data tester has the defects of incomplete test data and poor durability, and certain adverse effects are brought to ship design work.
Disclosure of Invention
The invention aims to provide a double-rod ship wave-resistant performance tester which can measure dynamic operation data and attitude data of a ship and has higher durability.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a two pole boats and ships endurance test appearance, includes the support frame and locates first test rod and second test rod on the support frame, first test rod and second test rod can be connected its characterized in that with the ship model: be equipped with on the support frame and drive the steering drive mechanism that the support frame turned to, the both ends of support frame all have the perforation, first test rod and second test rod wear to locate respectively in the perforation and can the up-and-down motion in the perforation, still including detecting the displacement sensor of first test rod and second test rod lift volume.
During the use, be connected to the front end and the rear end of ship model respectively with two test bars, arrange the ship model in the experiment pond, install the link on rotation drive arrangement, install the trailer of experiment pond top with this two pole boats and ships wave resistance capability test appearance through the link on, the wave is made in the experiment pond, drags the trailer and then drives the ship model and head on unrestrained the advancing in the experiment pond, collects the three-dimensional power that the ship model received through three fens force transducer, realizes the detection to the ship model atress. The lifting amount data of the two testing rods are collected through the displacement sensor, and the ship model longitudinal inclination angle is detected by calculating the difference of the lifting amount between the two testing rods. In addition, the support frame can be driven to rotate through the rotation driving device, so that the ship model is driven to turn, the wave-facing angle of the ship model in the advancing process is changed, and the detection of dynamic operation data of the ship model is realized. In addition, the mode that adopts two test bars and ship model to be connected has also promoted the fastness of connection greatly. Therefore, in conclusion, the wave resistance performance test performed by adopting the invention not only has more comprehensive measured data, but also is more robust and durable.
As a preferred embodiment of the present invention, the steering driving mechanism includes a turntable, a servo motor, a transmission case, and a connecting plate, the turntable is mounted on the support frame, the servo motor and the transmission case are fixed on the support frame and located beside the turntable, a worm connected to the servo motor is provided in the transmission case, a turbine tooth engaged with the worm is provided on a circumference of the turntable, and the connecting plate is fixed on the turntable. By adopting the structure, the connecting plate and the supporting frame can be driven to rotate relatively by the drive of the servo motor and the transmission of the transmission case, and further the steering of the ship model is realized.
As a preferred embodiment of the present invention, the first test bar and the second test bar are identical in structure and comprise a long bar, a three-component force sensor and a ship model connector, wherein the long bar, the three-component force sensor and the ship model connector are arranged from top to bottomThe lower parts are connected in sequence. The ship model connector can be used for being connected with a ship model, and the three-component force sensor can measure X, Y, Z stress in three directions when the ship model travels and calculate M according to the stressYAnd MZ(M is torque).
As a preferred embodiment of the present invention, a first portal clamp and a second portal frame are respectively disposed at two ends of the support frame, fixed pulleys are respectively disposed on beams of the first portal frame and the second portal frame, a steel wire rope is wound around the fixed pulleys, one end of the steel wire rope is connected to the top of the long rod, and the other end of the steel wire rope is connected to a counterweight. By adopting the structure, the first testing rod is connected with the second testing rod and the balance weight through the fixed pulley, so that the weight of the first testing rod and the weight of the second testing rod are less than the minimum, the movement of the ship model is not influenced, and the testing precision is improved.
As a preferred embodiment of the present invention, the counterweight has a center hole in the middle thereof, and guide holes on both sides thereof, the center hole being fitted over the long bar, and the guide holes being fitted over the guide posts of the first portal frame and the second portal frame. So that the counterweight can slide on the first portal frame and the second portal frame along the vertical direction,
in a preferred embodiment of the present invention, the displacement sensor is fixed to a beam of the first gantry and the second gantry. This displacement sensor can measure the lift position of balancing weight, and then measures the lift volume of test bar.
As an improvement of the invention, the support frame is provided with a clamping block for clamping the long rod. The clamping blocks can be used for clamping and fixing the test rods so as to measure the heave amount of the ship model.
As a further improvement of the invention, the counterweight is provided with an interface for connecting a small counterweight, so that the counterweight can be finely adjusted, the weight of the test rod can be better offset, and the experimental data can be more accurate.
The invention can measure the data of pitch angle, heave force, heave amount and the like when the ship model advances, turns and moves in an S shape, the measuring range and the measuring condition are wider and more comprehensive compared with the existing testing equipment, and the efficient implementation of the ship design work is facilitated.
Drawings
The invention is further illustrated below with reference to the figures:
FIG. 1 is a perspective view of the wave resistance tester for a double-rod ship;
FIG. 2 is a partial view showing a specific structure of a portal frame in the double-rod ship wave resistance tester;
FIG. 3 is a perspective view showing a specific structure of a steering driving mechanism in the double-rod ship wave resistance tester;
FIG. 4 is an assembly view of the double-rod ship wave resistance tester in a working state;
wherein: 100-support frame, 101-I-beam, 102-middle support plate, 103-end upper support plate, 104-end lower support plate, 105-perforation, 201-first test rod, 202-second test rod, 203-long rod, 204-three-component force sensor, 205-ship model connector, 210-clamping block, 211-static block, 212-movable block, 301-first portal frame, 302-second portal frame, 303-guide upright post, 304-cross beam, 305-fixed pulley, 306-steel wire rope, 307-displacement sensor, 400-steering driving mechanism, 401-turntable, 402-servo motor, 403-transmission box, 404-connecting plate, 500-counterweight, 501-center hole, 502-guide hole, 503-interface, 600-connecting frame, 601-U-shaped frame and 700-ship model.
Detailed Description
The invention is further illustrated by the following specific examples:
as shown in fig. 1, the dual-lever vessel wave-resistance tester of the present invention includes a support frame 100, a first testing lever 201, a second testing lever 202, a first portal frame 301, a second portal frame 302, a steering driving mechanism 400, a counterweight 500, and a connecting frame 600.
The support frame 100 is composed of two i-beams 101 arranged in parallel, a middle support plate 102 connected to the middle of the upper surfaces of the two i-beams 101 in a crossing manner, and an upper end support plate 103 and a lower end support plate 104 respectively connected to the upper and lower surfaces of the two ends of the two i-beams in a crossing manner. The intermediate positions of the end upper support plate 103 and the end lower support plate 104 have perforations 105 aligned up and down.
The first test rod 201 and the second test rod 202 have the same structure, and are composed of a long rod 203, a three-component force sensor 204 and a ship model connector 205 which are sequentially connected from top to bottom. The three-component force sensor 204 can measure X, Y, Z forces in three directions when the ship model 700 travels and calculate M from the forcesYAnd MZ(M is torque). The ship module connector 205 can be used to make a connection with the bottom of the ship module 700.
The first testing rod 201 is installed at the front end of the supporting frame 100 through a first portal frame 301, and the second testing rod 202 is installed at the rear end of the supporting frame 100 through a second portal frame 302. The first portal frame 301 and the second portal frame 302 are arranged on the end part upper support plate 103 positioned at the front end and the rear end, the first portal frame 301 and the second portal frame 302 have the same structure, and are composed of guide columns 303 symmetrically fixed at the two sides of the perforation of the end part upper support plate 103 and a cross beam 304 crossing and connected at the top ends of the two guide columns 303.
As shown in fig. 2, the balance weight 500 has a center hole 501 at a middle position and two guide holes 502 symmetrically located at both sides of the center hole 501. The central hole 501 is aligned above and below the perforations 105 in the end upper support plate 103 and the end lower support plate 104. Two guide holes 502 of the counterweight 500 on the support frame 100 are respectively sleeved on two guide columns 303 of the first portal frame 301 and the second portal frame 302, and linear bearings are installed in the guide holes 502 to enable the counterweight 500 to slide up and down along the guide columns.
Two fixed pulleys 305 are fixed below the beams 304 of the first gantry 301 and the second gantry 302 respectively. Each fixed pulley 305 is wound with a steel wire rope 306. The long rod 203 of the first test rod 201 and the second test rod 202 is inserted into the central hole 501 and the two through holes 105, respectively. One end of the steel wire rope 306 is connected with the upper end of the long rod 203, and the other end is connected with the counterweight 500.
As shown in fig. 3, the steering drive mechanism 400 is mounted on the intermediate support plate 102, and includes a turntable 401, a servo motor 402, a transmission case 403, and a connection plate 404. The gear box 403 has a worm connected to the servo motor 402, and the turntable 401 has a worm gear engaged with the worm on the circumference. The connecting plate 404 is fixedly connected to the turntable 401.
Through the driving of the servo motor 402 and the transmission of the transmission case 403, the middle support plate 102 can be driven to rotate relative to the turntable 401, that is, the support frame 100 is driven to rotate so as to drive the ship model 700 to turn.
The front and rear end lower supporting plates are provided with clamping blocks 210, each clamping block 210 is composed of a static block 211 and a movable block 212, the long rod 210 penetrates through the space between the static block 211 and the movable block 212, the static block 211 is fixed on the edge of a through hole on the end lower supporting plate 104, and the movable block 212 is connected with the static block 211 through a bolt. By screwing the bolts, the movable block 212 and the stationary block 211 can clamp the long rod 210, so that the long rod 210 is stationary fixed on the support frame 100.
In addition, displacement sensors 307 for measuring the heave of the test bar are further installed on the upper sides of the first gantry 301 and the second gantry 302. In the present embodiment, the displacement sensor 307 is specifically mounted on the cross beam 304. The displacement sensor 307 can measure the lifting position of the weight block, and further measure the lifting and sinking of the first test rod 201 and the second test rod 202.
The connecting frame 600 is composed of two U-shaped frames 601, the bottoms of the two U-shaped frames 601 are respectively connected to the two ends of the connecting plate 404, and the top of the two U-shaped frames 601 is connected to the trailer above the experimental pond. The double-rod ship wave endurance tester can be dragged by dragging the trailer, and further the ship model 700 is driven to move in the waves of the experimental water pool.
In the double-rod ship wave resistance performance tester, during measurement, the displacement sensor and the three-component force sensor are connected with the computer to obtain measurement data. The specific working mode of the double-rod ship model wave resistance tester is as follows:
during the use, all connect the ship model connector of first test bar 201 and second test bar 202 in the bottom of ship model 700, arrange ship model 700 in the experiment pond, pass through link 600 with this two pole boats and ships wave resistance capability test appearance and fix to the trailer of experiment pond top on, make the wave of folk prescription direction in the experiment pond, the trailer drags ship model 700 to head on the unrestrained forward along specific direction. The steering driving mechanism 400 drives the supporting frame 100 to rotate under the control of the PLC, and further drives the ship model 700 to steer, and the wave-facing angle of the ship model, such as left-right steering, S-shaped traveling and the like, is changed at any time when the ship model moves forward, so that the wave resistance of the ship model 700 under the dynamic operation condition is detected.
In another working mode, the long rods 203 of the first test rod 201 and the second test rod 202 are clamped by the clamping blocks 210, so that the ship model 700 is fixed relative to the support frame to measure the force in the heave direction of the ship model, and in addition, the ship model 700 can be dragged by the trailer to measure the wave-facing resistance of the ship model 700.
Through adopting two test bars to be connected with ship model 700, make to connect more firm, can reduce the torsional force that single test bar received among the ship model 700 steering process and the yawing force that receives when carrying out the wave resistance test, avoid damaging three fens force transducer 204, improved the durability. In addition, the heave of the ship model 700 sailing in the waves is measured by the displacement sensor 307 arranged on the first test rod 201 and the second test rod 202, and the pitch angle data of the ship model can be obtained by calculating the difference between the lifting amount of the first test rod 201 and the lifting amount of the second test rod 202, so that the test data are more comprehensive.
Besides the advantages, the invention also has the advantages of self-balancing and fine adjustment of the ship model counterweight, which is embodied in that: first test bar and second test bar are all through being furnished with counter weight 500, and when being in free deep-sinking mode, stock 203 can be nimble with the ship model heaving, can not be because of installation test bar to the counter weight of ship model 700, float attitude, deep-sinking production influence. An interface for mounting a small counterweight is reserved on the counterweight 500, so that the fine adjustment of the counterweight of the ship model can be realized. The counterweight slides up and down along the guide upright 303 without shaking.
Through the detailed description, the ship model test device can measure the data such as the pitch angle, the heave force, the heave quantity and the like when the ship model advances, turns and moves in an s-shaped manner, has wider and more comprehensive measurement range and measurement conditions compared with the conventional test device, and is favorable for the efficient implementation of the ship design work.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, as long as they fall within the true spirit and scope of the present invention.
Claims (8)
1. The utility model provides a two pole boats and ships endurance test appearance, includes support frame (100) and locates first test rod (201) and second test rod (202) on support frame (100), first test rod (201) and second test rod (202) can be connected its characterized in that with ship model (700): be equipped with on support frame (100) and drive support frame (100) turn to actuating mechanism (400), the both ends of support frame (100) all have perforation (105), first test bar (201) and second test bar (202) wear to locate respectively in perforation (105) and can be in up-and-down motion in perforation (105), still including can detect displacement sensor (307) of first test bar (201) and second test bar (202) elevating position.
2. The double-lever ship seakeeping performance tester as claimed in claim 1, wherein: turn to actuating mechanism (400) including carousel (401), servo motor (402), transmission case (403) and connecting plate (404), carousel (401) is installed on support frame (100), servo motor (402) and transmission case (403) are fixed on support frame (100) and be located carousel (401) are other, have in transmission case (403) with the worm that servo motor (402) are connected, the circumference of carousel (401) have with the turbine tooth of worm meshing, connecting plate (404) are fixed on carousel (401).
3. The double-lever ship seakeeping performance tester as claimed in claim 1, wherein: the structure of first test bar (201) and second test bar (202) is the same, and it all includes stock (203), three fens force transducer (204) and ship model connector (205), stock (203), three fens force transducer (204) and ship model connector (205) from the top down connect gradually.
4. The double-lever vessel seakeeping performance tester as claimed in claim 3, wherein: support frame (100) both ends are located the top department of first test bar (201) and second test bar (202) is equipped with first portal frame (301) and second portal frame (302) respectively, be equipped with fixed pulley (305) on crossbeam (304) of first portal frame (301) and second portal frame (302), around having wire rope (306) on fixed pulley (305), wire rope (306) one end connect in stock (203) top, counter weight (500) are connected to the other end.
5. The double-lever vessel seakeeping performance tester as claimed in claim 4, wherein: the middle of the counterweight (500) is provided with a center hole (501) sleeved on the long rod (203), and two sides of the counterweight are provided with guide holes (502) sleeved on the guide upright posts (303) of the first portal frame (301) and the second portal frame (302).
6. The double-lever vessel seakeeping performance tester as claimed in claim 5, wherein: the displacement sensor (307) is fixed on a beam (304) of the first portal frame (301) and the second portal frame (302).
7. The double-lever vessel seakeeping performance tester as claimed in claim 5, wherein: the counterweight (500) is provided with an interface (503) for connecting a small counterweight.
8. The double-lever vessel seakeeping performance tester as claimed in claim 3, wherein: the supporting frame (100) is provided with a clamping block (210) for clamping the long rod (203).
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| CN201911049607.8A CN110758670B (en) | 2019-10-31 | 2019-10-31 | Double-rod ship wave-resistant performance tester |
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| CN110758670B CN110758670B (en) | 2022-03-01 |
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| KR100890563B1 (en) * | 2007-11-16 | 2009-03-25 | 삼성중공업 주식회사 | Test apparatus for maneuvering and seakeeping of ships |
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