CN114655383A - Leading cantilever type high-speed boat hydrodynamic force performance test device - Google Patents
Leading cantilever type high-speed boat hydrodynamic force performance test device Download PDFInfo
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- CN114655383A CN114655383A CN202210438503.1A CN202210438503A CN114655383A CN 114655383 A CN114655383 A CN 114655383A CN 202210438503 A CN202210438503 A CN 202210438503A CN 114655383 A CN114655383 A CN 114655383A
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- 238000011056 performance test Methods 0.000 title claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 90
- 238000005096 rolling process Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims description 54
- 230000007246 mechanism Effects 0.000 claims description 51
- 230000033001 locomotion Effects 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/20—Designing vessels; Predicting their performance using towing tanks or model basins for designing
Abstract
The invention relates to a hydrodynamic performance test device for a front-mounted cantilever type high-speed boat, which comprises a pool track, wherein a trailer body is mounted on the pool track, a trailer front end beam is arranged at the end part of the trailer body, a front-mounted cantilever support is fixed on the outer side of the trailer front end beam, a two-degree-of-freedom airworthiness device and a rolling type navigation device are mounted on the front-mounted cantilever support, and correspond to a test model on the water surface. The test model is arranged at the front end of the test trailer, and a front cantilever structure is adopted, so that the influence of a local flow surrounding field concerned by the trailer in a high-speed sailing test on an airflow field in front of the test model is greatly reduced, and the accuracy of high-speed test data is effectively improved.
Description
Technical Field
The invention relates to the technical field of testing devices, in particular to a hydrodynamic performance testing device for a front cantilever type high-speed boat.
Background
For the test of a water surface high-speed ship model, at present, a towing tank at home and abroad mostly adopts a conventional towing mode of a trailer to carry out the test, namely, a seaworthiness instrument for towing the model is mounted on a central measuring bridge of the trailer in the conventional towing mode of the trailer, a towing rod of the seaworthiness instrument tows the model and makes linear motion along with the trailer, and meanwhile, the model can generate periodic vertical oscillation along with waves in the vertical direction. The mode has no problem for the model test of the common low-speed water surface ship, but for the model test of the high-speed water surface ship, because the distance between the trailer and the central measuring bridge and the water surface is limited, certain interference can be generated on an airflow field generated by the water surface ship model in high-speed motion, and the accuracy of test data is directly influenced.
Disclosure of Invention
The applicant provides a leading cantilever type high-speed boat hydrodynamic force performance test device aiming at the defects in the prior art, thereby greatly improving the reliability of the test device and having high test precision.
The technical scheme adopted by the invention is as follows:
the utility model provides a leading cantilever type high-speed boat hydrodynamic force performance test device, includes the pond track, install the trailer body on the pond track, the tip of trailer body is provided with trailer front end crossbeam, and the outside of trailer front end crossbeam is fixed with leading outrigger, install two degree of freedom airworthiness device and roll formula navigation head on the leading outrigger, two degree of freedom airworthiness device and roll formula navigation head correspond with the experimental model on the surface of water.
The further technical scheme is as follows:
the middle of the front cantilever support is a rectangular survey bridge, two guide rails are arranged at the upper ends of two longitudinal beams of the rectangular survey bridge and used for installing a two-degree-of-freedom seaworthy device and a mounting reference of a rolling type navigation device, wherein the rolling type navigation device is arranged in the front, the two-degree-of-freedom seaworthy device is arranged behind the two-degree-of-freedom seaworthy device, working platforms are arranged on two sides of the rectangular survey bridge, safety handrails are arranged around the working platforms, a test model is dragged by the two-degree-of-freedom seaworthy device and measures various hydrodynamic performance, and the rolling type navigation device plays a role in safety protection.
The two-degree-of-freedom seaworthy device is installed at the tail end of a rectangular survey bridge of the front cantilever support, and the two-degree-of-freedom seaworthy device is installed on two guide rails on the upper surface of the rectangular survey bridge in a positioning mode through a seaworthy device locking mechanism.
The structure of the two-degree-of-freedom airworthiness device is as follows: the device comprises a seaworthiness device base, wherein seaworthiness device locking mechanisms are respectively installed at four corners of the seaworthiness device base, and are fixedly locked on a front cantilever support; a vertical column is arranged in the middle of the seaworthy device base, a vertical displacement guide rail is arranged on one side of the vertical column, a heave rod is arranged on the vertical displacement guide rail through a vertical displacement sliding block, and the heave rod vertically displaces along the vertical displacement guide rail; the top surface of stand is provided with a set of assembly pulley, the stand opposite side is provided with balanced guide slide, and balanced weight is placed to the bottom of balanced guide slide, install the balancing piece guide bar on the balanced guide slide, thin wire rope is installed at balancing piece guide bar top, and thin wire rope walks around behind the assembly pulley and is connected with the pole that rises and sinks.
And a vertical displacement sensor is further installed on the seaworthiness device base and is connected with the heave rod through a displacement pull wire.
Force cell sensor is connected to the lower extreme of heave pole, connects a pitching mechanism at force cell sensor's lower extreme, and pitching mechanism includes pitch angle displacement sensor, mounting plate, fixed pin and pitch staff, and the fixed pin will pitch the mechanism and be connected fixedly with the heave pole, and mounting plate is used for connecting test model, and mounting plate makes the model make the seaworthiness motion under the wave condition around pitch staff, and pitch angle displacement sensor installs the one end at the pitch staff, measures the model and makes the pitch angle displacement volume of seaworthiness motion under the wave condition.
The structure of the rolling type navigation device is as follows: the navigation device locking mechanism is fixedly locked on the front cantilever support; the middle part of a navigation device base is provided with a lifting guide sleeve, a lifting rod is arranged in the lifting guide sleeve and vertically moves in the lifting guide sleeve, a lifting screw rod is driven by a lifting motor to rotate in a driving mode so as to drive a lifting nut to move and enable the lifting rod to vertically displace, the lower end of the lifting rod is connected with a navigation rod bearing seat, a navigation rod bearing is arranged in the navigation rod bearing seat, the inner ring of the navigation rod bearing is connected with the navigation rod, and the navigation rod freely rolls; the method is characterized in that a navigation plate is installed on the bow of the test model and comprises navigation plate rollers, navigation plate bearings and a navigation plate bottom plate, the navigation plate bottom plate is fixedly connected with the test model, two groups of bearings are arranged at two ends of the navigation plate bottom plate, two navigation plate rollers are installed on inner rings of the bearings, and a navigation rod is inserted between the two navigation plate rollers during testing.
And a lifting switch is arranged on the navigation device locking mechanism and controls the action of the lifting motor.
The invention has the following beneficial effects:
(1) the installation position of the test model is different from that of the previous test, the previous test model is generally installed in the middle of a trailer, and structural members such as a cross beam at the front part of the trailer have certain influence on an airflow field in front of the test model during a high-speed navigation test, so that the accuracy of test data is influenced. The test model is arranged at the front end of the test trailer, and a front cantilever structure is adopted, so that the influence of a local winding flow field concerned by the trailer during a high-speed sailing test on an airflow field in front of the test model is greatly reduced, and the accuracy of high-speed test data is effectively improved;
(2) the test equipment adopts the two-degree-of-freedom seaworthy device, and has the greatest characteristic that the test equipment can be used in still water and under the wave condition, and when the model moves vertically under the action of waves, the towing rod of the two-degree-of-freedom seaworthy device moves vertically and reciprocally along with the model. Meanwhile, when the model makes pitching motion under the action of waves, the pitching mechanism of the two-degree-of-freedom seaworthy device makes pitching reciprocating motion. The two-degree-of-freedom seaworthiness device adopts the follow-up type motion device in the vertical oscillation and longitudinal swing two-degree-of-freedom directions, so that the seaworthiness device is good in seaworthiness.
(3) The invention designs the function of presetting the rolling angle of the ship model, and simultaneously, the rolling locking mechanism is arranged to lock the rolling motion so as to meet different requirements.
(4) The invention can directly obtain the hydrodynamic parameters of the ship model, such as model resistance (Fx), model heave displacement (delta Z) and time history of model pitch change (alpha) and the like through various sensors arranged on the device.
(5) The invention is mainly suitable for hydrodynamic performance measurement of a water surface high-speed ship model test, and belongs to the field of test and test technology development.
Drawings
FIG. 1 is a front view of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a front view of the forward outrigger of the present invention.
Fig. 4 is a top view of fig. 3.
FIG. 5 is a front view of the two-degree-of-freedom airworthiness device of the present invention.
Fig. 6 is a partial view of fig. 5.
Fig. 7 is a front view of the rolling type navigation device of the present invention.
Fig. 8 is a partial view of fig. 7.
Wherein: 1. a front cantilever support; 2. a two-degree-of-freedom airworthiness device; 3. a rolling navigation device; 4. a rectangular measuring bridge; 5. a guide rail; 6. a safety rail; 7. a working platform; 8. a seaworthy device locking mechanism; 9. a seaworthy device base; 10. a vertical displacement sensor; 11. a thin wire rope; 12. a pulley block; 13. a heave bar; 14. a displacement pull wire; 15. a balance block guide rod; 16. a balance guide sliding seat; 17. balancing weights; 18. a column; 19. a vertical displacement slider; 20. a force sensor; 21. a pitch angular displacement sensor; 22. mounting a bottom plate; 23. a fixing pin; 24. pitching the small shaft; 25. a vertical displacement guide rail; 26. a navigation device locking mechanism; 27. a lifting switch; 28. a navigation device base; 29. a lifting motor; 30. lifting a screw rod; 31. a lifting nut; 32. a lifting guide sleeve; 33. a lifting rod; 34. a navigation bar bearing block; 35. a navigation rod bearing; 36. a navigation bar; 37. a navigation plate roller; 38. a bearing; 39. a navigation panel base plate; 40. a test model; 41. a front end beam of the trailer; 42. a trailer body; 43. a pool track; 44. the surface of the water.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-8, the hydrodynamic performance testing device of the front cantilever type high-speed boat of this embodiment includes a water tank rail 43, a trailer body 42 is installed on the water tank rail 43, a trailer front end beam 41 is provided at an end portion of the trailer body 42, a front cantilever support 1 is fixed at an outer side of the trailer front end beam 41, a two-degree-of-freedom seaworthy device 2 and a rolling type navigation device 3 are installed on the front cantilever support 1, the two-degree-of-freedom seaworthy device 2 and the rolling type navigation device 3 correspond to a test model 40 on a water surface 44, and the rolling type navigation device 3 corresponds to the two-degree-of-freedom seaworthy device 2.
The middle of leading cantilever support 1 is rectangle survey bridge 4, the upper end at two longitudinal beams of rectangle survey bridge 4 is equipped with two guide rails 5, an installation benchmark for installing two degree of freedom airworthiness device 2 and roll formula navigation head 3, wherein roll formula navigation head 3 is in the front, two degree of freedom airworthiness device 2 is in the back, both sides at rectangle survey bridge 4 are provided with work platform 7, work platform 7 is equipped with safety railing 6 all around, test model 40 is drawn and measures each item hydrodynamic force performance by two degree of freedom airworthiness device 2, roll formula navigation head 3 plays the safety protection effect.
The two-degree-of-freedom airworthiness device 2 is installed at the tail end of a rectangular survey bridge 4 of the front cantilever support 1, and the two-degree-of-freedom airworthiness device 2 is installed on two guide rails 5 on the upper surface of the rectangular survey bridge 4 in a positioning mode through an airworthiness device locking mechanism 8.
The structure of the two-degree-of-freedom airworthiness device 2 is as follows: the seaworthy device comprises a seaworthy device base 9, wherein four corners of the seaworthy device base 9 are respectively provided with a seaworthy device locking mechanism 8, and the seaworthy device locking mechanisms 8 are locked and fixed on a front cantilever support 1; a vertical column 18 is arranged in the middle of the seaworthy device base 9, a vertical displacement guide rail 25 is arranged on one side of the vertical column 18, a heave rod 13 is arranged on the vertical displacement guide rail 25 through a vertical displacement sliding block 19, and the heave rod 13 vertically displaces along the vertical displacement guide rail 25; the top surface of the upright column 18 is provided with a group of pulley blocks 12, the other side of the upright column 18 is provided with a balance guide sliding seat 16, a balance weight 17 is placed at the bottom of the balance guide sliding seat 16, a balance block guide rod 15 is installed on the balance guide sliding seat 16, a thin steel wire rope 11 is installed at the top of the balance block guide rod 15, and the thin steel wire rope 11 bypasses the pulley blocks 12 and then is connected with the heave rod 13.
The airworthiness device base 9 is also provided with a vertical displacement sensor 10, and the vertical displacement sensor 10 is connected with a heave rod 13 through a displacement stay wire 14.
The lower end of the heave rod 13 is connected with a load cell 20, the lower end of the load cell 20 is connected with a pitching mechanism, the pitching mechanism comprises a pitching angular displacement sensor 21, a mounting base plate 22, a fixing pin 23 and a pitching small shaft 24, the fixing pin 23 is used for connecting and fixing the pitching mechanism and the heave rod 13, the mounting base plate 22 is used for connecting a test model 40, the mounting base plate 22 enables the model to make seaworthy motion under the wave condition around the pitching small shaft 24, the pitching angular displacement sensor 21 is mounted at one end of the pitching small shaft 24, and the pitching angular displacement of the model making seaworthy motion under the wave condition is measured.
The structure of the rolling type navigation device 3 is as follows: the device comprises a navigation device base 28, wherein navigation device locking mechanisms 26 are respectively arranged at four corners of the navigation device base 28, and the navigation device locking mechanisms 26 are locked and fixed on a front cantilever support 1; a lifting guide sleeve 32 is arranged in the middle of a navigation device base 28, a lifting rod 33 is arranged in the lifting guide sleeve 32, the lifting rod 33 vertically moves in the lifting guide sleeve 32, a lifting screw 30 is driven to rotate by a lifting motor 29 in a driving mode, so that a lifting nut 31 is driven to move, the lifting rod 33 vertically displaces, the lower end of the lifting rod 33 is connected with a navigation rod bearing seat 34, a navigation rod bearing 35 is arranged in the navigation rod bearing seat 34, the navigation rod 36 is connected with the inner ring of the navigation rod bearing 35, and the navigation rod 36 freely rolls; the method comprises the steps that a navigation plate is arranged on the bow of a test model 40 and comprises navigation plate rollers 37, navigation plate bearings 38 and a navigation plate bottom plate 39, the navigation plate bottom plate 39 is fixedly connected with the test model 40, two groups of bearings 38 are arranged at two ends of the navigation plate bottom plate 39, two navigation plate rollers 37 are arranged on inner rings of the bearings 38, and a navigation rod 36 is inserted between the two navigation plate rollers 37 during testing.
The navigation device locking mechanism 26 is provided with a lifting switch 27, and the lifting switch 27 controls the action of a lifting motor 29.
The specific structure and function of the invention are as follows:
as shown in fig. 1 and fig. 2, the present invention mainly comprises three major parts, namely a front cantilever support 1, a two-degree-of-freedom seaworthy device 2 and a rolling type navigation device 3, wherein the front cantilever support 1 is installed at the front end of a laboratory trailer body 42, the specific position is at a trailer front end beam 41 of the trailer body 42, and the two-degree-of-freedom seaworthy device 2 and the rolling type navigation device 3 are respectively installed on a rectangular bridge 4 of the front cantilever support 1.
As shown in fig. 3 and 4, as described above, the front cantilever support 1 is installed at the front end beam 41 of the trailer body 42 in the laboratory, the middle is the rectangular survey bridge 4, and two guide rails 5 are provided at the upper ends of two longitudinal beams of the rectangular survey bridge 4, for installing the two-degree-of-freedom seaworthy device 2 and the installation reference of the rolling type navigation device 3, wherein the rolling type navigation device 3 is in the front and the two-degree-of-freedom seaworthy device 2 is in the rear. The working platform 7 used for workers to install the equipment is designed on two sides of the rectangular measuring bridge 4, and the safety rails 6 are arranged on the periphery of the working platform 7 according to safety requirements. The test model 40 is dragged by the two-degree-of-freedom airworthiness device 2 and measures various hydrodynamic performance of the model, and the rolling type navigation device 3 plays a role in safety protection.
As shown in fig. 5 and 6, the two-degree-of-freedom airworthiness device 2 has the following specific structure:
during testing, the two-degree-of-freedom airworthiness device 2 is installed at the tail end of the rectangular measuring bridge 4 of the front cantilever support 1, and the two-degree-of-freedom airworthiness device 2 is installed on the two guide rails 5 on the upper surface of the rectangular measuring bridge 4 in a positioning mode through the airworthiness device locking mechanism 8.
The two-degree-of-freedom seaworthy device 2 mainly comprises a seaworthy device locking mechanism 8, a seaworthy device base 9, a vertical displacement sensor 10, a thin steel wire rope 11, a pulley block 12, a heave rod 13, a displacement pull wire 14, a balance block guide rod 15, a balance guide sliding seat 16, a balance weight 17, a stand column 18, a vertical displacement sliding block 19, a force measuring sensor 20, a pitching angular displacement sensor 21, a mounting bottom plate 22, a fixing pin 23, a pitching small shaft 24, a vertical displacement guide rail 25 and the like.
The upright column 18 is arranged in the middle of the airworthiness device base 9, and four airworthiness device locking mechanisms 8 are arranged at four corners of the airworthiness device base 9 and used for locking and fixing the two-degree-of-freedom airworthiness device 2 on the rectangular measuring bridge 4 of the front cantilever support 1.
A vertical displacement guide rail 25 is arranged on one side of the upright column 18, and the heave bar 13 vertically displaces along the vertical displacement guide rail 25 through a vertical displacement slide block 19.
The top of the upright column 18 is provided with a pulley block 12, the other side of the upright column 18 is provided with a balance guide sliding seat 16, the weights of the heave rod 13 and the lower end part are balanced by the weight of a balance weight 17, the balance weight 17 is realized by a balance weight guide rod 15, the pulley block 12, a thin steel wire rope 11 and other mechanisms, one end of the thin steel wire rope 11 is connected with the heave rod 13, and the other end is connected with the balance weight guide rod 15.
The lower end of the heave bar 13 is connected with a load cell 20 for measuring hydrodynamic performance in model test, and the lower end of the load cell 20 is connected with a pitching mechanism which comprises a pitching angular displacement sensor 21, a mounting base plate 22, a fixing pin 23, a pitching small shaft 24 and the like. The fixing pin 23 is used for connecting and fixing the pitching mechanism and the heave rod 13, the mounting base plate 22 is used for connecting a model, the mounting base plate 22 can enable the model to make seaworthy motion under the wave condition around the pitching small shaft 24, the pitching angular displacement sensor 21 is mounted at one end of the pitching small shaft 24, and the pitching angular displacement of the model making seaworthy motion under the wave condition can be measured.
A vertical displacement sensor 10 is installed on a seaworthy device base 9, the lower end of an output displacement pull wire 14 of the vertical displacement sensor 10 is connected with the lower end of a heave rod 13, and the vertical oscillation displacement of a model in seaworthy motion under a wave condition can be measured through the vertical displacement sensor 10.
As shown in fig. 7, the specific structure of the rolling navigation device 3 is:
the rolling navigation device 3 is a protection for the measuring equipment against the yawing moment which can be generated by errors of model processing, installation and the like in the test process of a relatively large model.
The rolling type navigation device 3 adopts a rolling type mechanism with a small friction coefficient, and comprises a navigation device locking mechanism 26, a lifting switch 27, a navigation device base 28, a lifting motor 29, a lifting screw 30, a lifting nut 31, a lifting guide sleeve 32, a lifting rod 33, a navigation rod bearing seat 34, a navigation rod bearing 35, a navigation rod 36, a navigation plate roller 37, a navigation plate bearing 38, a navigation plate bottom plate 39 and the like.
During the test, the rolling type navigation device 3 is installed at the head end of the rectangular side bridge 4 of the front cantilever support 1, and the rolling type navigation device 3 is positioned and installed on the two guide rails 5 on the upper surface of the rectangular side bridge 4 by the navigation device locking mechanism 26.
The lifting guide sleeve 32 is installed in the middle of the navigation device base 28, the lifting rod 33 can move vertically in the lifting guide sleeve 32, the lifting motor 29 drives the lifting screw rod 30-lifting nut 31 to make the lifting rod 33 do vertical one point, and the lifting motor 29 is controlled by the lifting switch 27.
The lower end of the lifting rod 33 is connected with a navigation rod bearing seat 34, a navigation rod bearing 35 is arranged in the navigation rod bearing seat 34, the inner ring of the navigation rod bearing 35 is connected with a navigation rod 36, and the navigation rod 36 can roll freely.
A navigation plate is arranged at a proper position of the bow of the test model 40, and the navigation plate comprises a navigation plate roller 37, a (navigation plate) bearing 38, a navigation plate bottom plate 39 and the like. The navigation plate bottom plate 39 and the like are fixedly connected with a test model 40, two groups of bearings 38 are arranged at two ends of the upper surface of the navigation plate bottom plate 39, two navigation plate rollers 37 are arranged on inner rings of the bearings 38, a navigation rod 36 is inserted into the middle of the two navigation plate rollers 37 during the test, and when the model moves under the wave condition, relative motion is generated between the navigation rod 36 and the navigation plate rollers 37.
The invention is characterized in that the test device of the towing model is suspended and installed at the front end of the towing tank trailer, so the device is called a front cantilever type.
The trailer design speed should typically be greater than 12m/s, and therefore, care needs to be taken to influence the local streaming field of interest when the trailer is traveling at high speeds on the airflow field of the test model 40.
According to the principle that the complexity of a flow field is not reduced after the simplification of a key attention area of the trailer, the calculation model of the trailer airflow field is properly simplified, so that the model is placed under a front platform of the trailer, and an aeronautical instrument and a corresponding navigation device are arranged, so that the influence of a rear trailer on the airflow field in the test process is reduced as much as possible, and the accuracy of test data is improved.
The test equipment adopted by the invention is a two-degree-of-freedom airworthiness device 2, namely, the model can move up and down and in the pitching direction along with the waves in the vertical direction and the pitching direction under the dragging of the device.
Aiming at the yawing moment possibly generated by model processing errors and mounting errors when some models are overlarge, the invention arranges a navigation device at the front end of the model for protecting the normal use of test equipment, ensuring the reliability and repeatability of test data and greatly improving the test precision.
The time history of hydrodynamic parameters of the ship model, such as model longitudinal resistance, model lifting displacement, model pitch angle change and the like, can be directly obtained through various sensors arranged on the two-degree-of-freedom seaworthy device 2.
The invention mainly comprises a front cantilever support 1, a two-degree-of-freedom airworthiness device 2, a rolling type navigation device 3 and the like. Leading outrigger 1 installs at the front end of laboratory trailer, and the trapezium structure is middle for rectangle bridge 4. A two-degree-of-freedom airworthiness test device is arranged in the middle of the measuring bridge, and the test model 40 is dragged by the two-degree-of-freedom airworthiness test device and measures various hydrodynamic properties of the test model. For a general small model, a navigation device is arranged at the front end of the measuring bridge and used for navigation action on the model (the navigation device can not be arranged for the general small model).
The method comprises the following steps of (A) front cantilever support 1:
the front cantilever support 1 has the main function of being a mounting platform of the front-mounted high-speed boat model test device, is fixedly mounted at the front end of a laboratory pool trailer and has a trapezoidal structure, and a rectangular measuring bridge 4 is arranged in the middle. The rectangular bridge 4 is a rectangular frame consisting of four I-shaped beams, and is 2000mm long and 800mm wide. The upper surface of the longitudinal beam is provided with two guide rails, one of which is a rectangular structure, and the other of which is a trapezoidal structure, and the two guide rails are used as the installation reference of the two-degree-of-freedom airworthiness device 2 and the rolling type navigation device 3 of the test equipment. The two-degree-of-freedom airworthiness device 2 and the rolling type navigation device 3 of the test equipment can be adjusted in longitudinal positions on the bridge according to sizes of different models.
Two working platforms 7 are arranged on two sides of the rectangular measuring bridge 4, the length of each platform is 2000mm, the width of each platform is 800mm, and the platforms are used for facilitating the work of operators when test equipment is installed. The safety guardrail is arranged on the outer side of the platform, meets the requirements of national safety standards, and ensures the safety of workers.
Two-freedom airworthiness device 2
The two-degree-of-freedom seaworthy device 2 is the core of the test technology, and has the greatest characteristic that the two-degree-of-freedom seaworthy device 2 can be used in still water and under the wave condition, and when the model moves vertically under the action of waves, the towing rod of the two-degree-of-freedom seaworthy device 2 moves vertically and reciprocally along with the model. Meanwhile, when the model makes pitching motion under the action of waves, the pitching mechanism of the two-degree-of-freedom seaworthy device 2 makes pitching reciprocating motion.
The two-degree-of-freedom follow-up motion device is adopted in the two-degree-of-freedom device in the vertical oscillation and longitudinal swing freedom directions, and can follow various motions of the model under the wave condition, namely the follow-up wave flow-by-flow. The function of the test model is to ensure that the motion attitude of the test model 40 is not interfered by other factors, namely the seaworthiness of the test model is good; secondly, various hydrodynamic properties of the test model 40 can be measured by various sensors thereof, such as: model resistance (Fx), model heave displacement (Δ Z), and time history of model pitch change (α).
The two-degree-of-freedom seaworthy device 2 comprises a base, a lifting balance motion mechanism, a pitching mechanism, a measuring sensor and the like. The base is a platform for supporting equipment such as a lifting balance motion mechanism, a pitching mechanism, a measuring sensor and the like, four locking mechanisms are arranged at four corners of the base to lock the base on the measuring bridge, and the upright column 18 is fixed at the central part of the base. The upper end of the upright column 18 is provided with a pulley block mounting bottom plate 22, the lower part of the left side is provided with a weight balance guide seat, the middle part is provided with a base mounting fixed bottom plate, and the right side is vertically provided with a four-direction equal-load linear guide rail for vertical motion guidance of the heave motion mechanism.
The longitudinal resistance (Fx) of the sensor for measuring the two-degree-of-freedom airworthiness device 2 adopts a strain gauge electrical measurement technology. The heave displacement (delta Z) and the pitch angle change (alpha) of the model both adopt a potential measurement technology.
(III) Rolling type navigation device 3
The rolling type navigation device 3 is mainly characterized in that the navigation rod 36 and the navigation plate of the navigation mechanism both adopt rolling bearing structures with extremely small friction coefficients, so that the influence of the friction force of the navigation device on test data is reduced to the minimum, and the reliability of the test data is ensured.
The rolling type navigation device 3 comprises a navigation rod 36, a lifting mechanism, a navigation plate and the like, wherein the lifting mechanism is arranged at the front end of the rectangular measuring bridge 4 of the front cantilever support 1, and the specific position is determined according to the size of a model. Four locking and positioning mechanisms are arranged at four corners of a base of the lifting mechanism and are fixedly positioned with guide rails of a rectangular measuring bridge 4 of the front cantilever support 1. The lifting mechanism adopts trapezoidal lead screw transmission, has simple structure and self-locking function. The driving motor adopts an alternating current speed reducing motor and a motor speed reducer integrated structure. The lower end of the lifting rod 33 is connected with a fixed navigation rod 36, the upper part of the navigation rod 36 is a fixed bearing sleeve seat, the lower part of the navigation rod is a rolling round rod, the round rod is supported by a rolling bearing and fixed by the fixed bearing sleeve seat, and when the outer surface of the lower part of the round rod is subjected to a force in the tangential direction, the round rod rotates, so that the influence on the friction force is reduced. The navigation board is arranged at the head part of the test model 40 and is arranged on the same vertical axis with the two-degree-of-freedom airworthiness test device. The navigation plate is fixed on a bottom plate by two parallel rolling cylinders, and the rolling round rod of the navigation rod 36 is inserted between the two rolling cylinders of the navigation plate during operation.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (8)
1. The utility model provides a leading cantilever type high-speed boat hydrodynamic force performance test device, includes pond track (43), install trailer body (42) on pond track (43), the tip of trailer body (42) is provided with trailer front end crossbeam (41), its characterized in that: the outside of trailer front end crossbeam (41) is fixed with leading cantilever support (1), install two degree of freedom airworthiness device (2) and roll formula navigation head (3) on leading cantilever support (1), two degree of freedom airworthiness device (2) and roll formula navigation head (3) correspond with test model (40) on surface of water (44).
2. The hydrodynamic performance testing device of the front cantilever type high-speed boat as claimed in claim 1, wherein: the middle of the front cantilever support (1) is a rectangular survey bridge (4), two guide rails (5) are arranged at the upper ends of two longitudinal beams of the rectangular survey bridge (4) and are used for installing two-degree-of-freedom seaworthy devices (2) and installation references of rolling type navigation devices (3), wherein the rolling type navigation devices (3) are arranged in front of each other, the two-degree-of-freedom seaworthy devices (2) are arranged behind each other, working platforms (7) are arranged on two sides of the rectangular survey bridge (4), safety railings (6) are arranged around the working platforms (7), a test model (40) is dragged by the two-degree-of-freedom seaworthy devices (2) and measures various hydrodynamic performances, and the rolling type navigation devices (3) play a safety protection role.
3. The hydrodynamic performance testing device of the cantilever-type high-speed boat as claimed in claim 1, wherein: the two-degree-of-freedom airworthiness device (2) is installed at the tail end of a rectangular measuring bridge (4) of the front cantilever support (1), and the two-degree-of-freedom airworthiness device (2) is installed on two guide rails (5) on the upper surface of the rectangular measuring bridge (4) in a positioning mode through an airworthiness device locking mechanism (8).
4. The hydrodynamic performance testing device of the front cantilever type high-speed boat as claimed in claim 1, wherein: the structure of the two-degree-of-freedom airworthiness device (2) is as follows: the seaworthy device comprises a seaworthy device base (9), wherein four corners of the seaworthy device base (9) are respectively provided with a seaworthy device locking mechanism (8), and the seaworthy device locking mechanisms (8) are locked and fixed on a front cantilever support (1); an upright post (18) is mounted in the middle of the airworthiness device base (9), a vertical displacement guide rail (25) is arranged on one side of the upright post (18), a lifting rod (13) is mounted on the vertical displacement guide rail (25) through a vertical displacement sliding block (19), and the lifting rod (13) vertically displaces along the vertical displacement guide rail (25); the top surface of stand (18) is provided with a set of assembly pulley (12), stand (18) opposite side is provided with balanced guide slide (16), and balanced weight (17) are placed to the bottom of balanced guide slide (16), install balancing piece guide bar (15) on balanced guide slide (16), and thin wire rope (11) are installed at balancing piece guide bar (15) top, and after walking around assembly pulley (12), thin wire rope (11) are connected with heave pole (13).
5. The device for testing the hydrodynamic performance of a front cantilever type high-speed boat as claimed in claim 4, wherein: the seaworthiness device is characterized in that a vertical displacement sensor (10) is further mounted on the seaworthiness device base (9), and the vertical displacement sensor (10) is connected with the heave rod (13) through a displacement pull wire (14).
6. The device for testing the hydrodynamic performance of a front cantilever type high-speed boat as claimed in claim 4, wherein: force cell (20) are connected to the lower extreme of heave pole (13), connect a pitching mechanism at the lower extreme of force cell (20), pitching mechanism includes pitch angle displacement sensor (21), mounting plate (22), fixed pin (23) and pitch staff (24), fixed pin (23) are connected pitching mechanism and heave pole (13) fixedly, mounting plate (22) are used for connecting test model (40), mounting plate (22) make the model do the navigability motion under the wave condition around pitch staff (24), pitch angle displacement sensor (21) are installed in the one end of pitch staff (24), measure the pitch angle displacement volume that the model does the navigability motion under the wave condition.
7. The hydrodynamic performance testing device of the front cantilever type high-speed boat as claimed in claim 1, wherein: the structure of the rolling type navigation device (3) is as follows: the device comprises a navigation device base (28), wherein navigation device locking mechanisms (26) are respectively installed at four corners of the navigation device base (28), and the navigation device locking mechanisms (26) are locked and fixed on a front cantilever support (1); a lifting guide sleeve (32) is arranged in the middle of a navigation device base (28), a lifting rod (33) is arranged in the lifting guide sleeve (32), the lifting rod (33) vertically moves in the lifting guide sleeve (32), a lifting screw rod (30) is driven to rotate by a lifting motor (29) in a driving mode, so that a lifting nut (31) is driven to move, the lifting rod (33) vertically displaces, a navigation rod bearing seat (34) is connected to the lower end of the lifting rod (33), a navigation rod bearing (35) is arranged in the navigation rod bearing seat (34), a navigation rod (36) is connected to the inner ring of the navigation rod bearing (35), and the navigation rod (36) freely rolls; the navigation plate is arranged on the bow of the test model (40), the navigation plate comprises navigation plate rollers (37), navigation plate bearings (38) and a navigation plate bottom plate (39), the navigation plate bottom plate (39) is fixedly connected with the test model (40), two groups of bearings (38) are arranged at two ends of the navigation plate bottom plate (39), two navigation plate rollers (37) are arranged on inner rings of the bearings (38), and a navigation rod (36) is inserted into the middle of the two navigation plate rollers (37) during the test.
8. The hydrodynamic performance testing device of claim 7, further comprising: and a lifting switch (27) is arranged on the navigation device locking mechanism (26), and the lifting switch (27) controls a lifting motor (29) to act.
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| CN202210438503.1A CN114655383A (en) | 2022-04-25 | 2022-04-25 | Leading cantilever type high-speed boat hydrodynamic force performance test device |
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| CN202210438503.1A CN114655383A (en) | 2022-04-25 | 2022-04-25 | Leading cantilever type high-speed boat hydrodynamic force performance test device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203323992U (en) * | 2013-07-15 | 2013-12-04 | 中国船舶重工集团公司第七○二研究所 | A two-dimension measurement mechanism for hydrodynamic performances of a seaworthiness water surface model |
| CN205300891U (en) * | 2015-12-11 | 2016-06-08 | 中国特种飞行器研究所 | Unpowered model pond test device of full machine of anti unrestrained ability of surface of water aircraft |
| CN106184614A (en) * | 2016-07-06 | 2016-12-07 | 中国船舶重工集团公司第七○二研究所 | A kind of ship model resistance and attitude measuring and measuring method |
| CN106248342A (en) * | 2015-08-28 | 2016-12-21 | 中国特种飞行器研究所 | A kind of forward type pond towing trial device |
| CN106289717A (en) * | 2015-12-11 | 2017-01-04 | 中国特种飞行器研究所 | A kind of water surface flying device hydrodynamic performance list hull model test apparatus |
| CN106644378A (en) * | 2016-11-07 | 2017-05-10 | 中国特种飞行器研究所 | Water-surface aircraft single-hull model pool towing test device and method |
| CN110207950A (en) * | 2019-07-03 | 2019-09-06 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The towing gear and its test method of a kind of pond ship model in wave |
| CN210653588U (en) * | 2019-10-31 | 2020-06-02 | 上海船舶运输科学研究所 | Ship model steering guide device |
| CN112093002A (en) * | 2020-09-27 | 2020-12-18 | 中国船舶科学研究中心 | Novel forced rolling test device for water surface model |
| CN112606968A (en) * | 2020-12-17 | 2021-04-06 | 武汉理工大学 | Hull model hydrodynamic test device suitable for damaged boats and ships |
| CN113715982A (en) * | 2021-09-06 | 2021-11-30 | 武汉理工大学 | Self-propulsion test system for outboard-suspension type water-jet propulsion ship model |
-
2022
- 2022-04-25 CN CN202210438503.1A patent/CN114655383A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203323992U (en) * | 2013-07-15 | 2013-12-04 | 中国船舶重工集团公司第七○二研究所 | A two-dimension measurement mechanism for hydrodynamic performances of a seaworthiness water surface model |
| CN106248342A (en) * | 2015-08-28 | 2016-12-21 | 中国特种飞行器研究所 | A kind of forward type pond towing trial device |
| CN205300891U (en) * | 2015-12-11 | 2016-06-08 | 中国特种飞行器研究所 | Unpowered model pond test device of full machine of anti unrestrained ability of surface of water aircraft |
| CN106289717A (en) * | 2015-12-11 | 2017-01-04 | 中国特种飞行器研究所 | A kind of water surface flying device hydrodynamic performance list hull model test apparatus |
| CN106184614A (en) * | 2016-07-06 | 2016-12-07 | 中国船舶重工集团公司第七○二研究所 | A kind of ship model resistance and attitude measuring and measuring method |
| CN106644378A (en) * | 2016-11-07 | 2017-05-10 | 中国特种飞行器研究所 | Water-surface aircraft single-hull model pool towing test device and method |
| CN110207950A (en) * | 2019-07-03 | 2019-09-06 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The towing gear and its test method of a kind of pond ship model in wave |
| CN210653588U (en) * | 2019-10-31 | 2020-06-02 | 上海船舶运输科学研究所 | Ship model steering guide device |
| CN112093002A (en) * | 2020-09-27 | 2020-12-18 | 中国船舶科学研究中心 | Novel forced rolling test device for water surface model |
| CN112606968A (en) * | 2020-12-17 | 2021-04-06 | 武汉理工大学 | Hull model hydrodynamic test device suitable for damaged boats and ships |
| CN113715982A (en) * | 2021-09-06 | 2021-11-30 | 武汉理工大学 | Self-propulsion test system for outboard-suspension type water-jet propulsion ship model |
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