CN116380411A

CN116380411A - Towing tank and hydrodynamic test system

Info

Publication number: CN116380411A
Application number: CN202310253384.7A
Authority: CN
Inventors: 雒建斌; 朱漫福; 马丽然; 孙敬洋; 杨诺雯; 张春辉
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-07-04
Anticipated expiration: 2043-03-16
Also published as: CN116380411B

Abstract

The application relates to a towing tank and a hydrodynamic test system. The towing tank includes: a preset distance exists between the transparent pool main body and the ground; the support structure is positioned at the outer side of the pool main body, a preset interval exists between the support structure and the pool main body, the bottom of the support structure is supported on the ground, and the top of the support structure is positioned above the top of the pool main body; the trailer structure is movably arranged at the top of the supporting structure and slides relative to the pool main body along the supporting structure; and the central bridge measuring structure is arranged on the trailer structure and used for connecting test equipment, and the bottom of the test equipment stretches into the pool main body. Adopt transparent pond main part to carry out hydrodynamic force capability test, need not to dig the groove downwards and realize, reduce the complexity and the manufacturing cost of technology, realize diversified shooting and observing, the experimental operation of being convenient for, bearing structure and pond main part separate the setting and can avoid the vibration transmission of trailer structure to the pond main part, realize high accuracy measurement.

Description

Towing tank and hydrodynamic test system

Technical Field

The application relates to the technical field of hydrodynamic test equipment, in particular to a towing tank and a hydrodynamic test system.

Background

The towing tank is an important facility for carrying out hydrodynamic tests in the marine field of ships, and can be used for testing hydrodynamic performance (such as resistance) of models such as ship models, underwater vehicles and the like. The towing tank can also be used for testing the hydrodynamic performance of the propeller by arranging other different accessory parts, such as a propeller open hydrodynamic instrument and the like.

At present, the common towing tank type mainly comprises a tank main body formed by digging a groove downwards from the ground and pouring reinforced cement, and towing guide rails, trailers sliding on the guide rails and the like are arranged on the shore bases at two sides of the tank main body. The pool is usually large in size (the length can reach hundreds of meters long, the width is usually tens of meters wide), and the pool is required to be grooved below the ground, and certain foundation non-settlement degree is required to be maintained. In addition, because the towing tank is formed by digging a groove below the ground, the side surfaces and the bottom surfaces of the towing tank are opaque, the test model is almost completely installed above the water surface, after the model is immersed below the water surface, the model position is usually difficult to adjust due to no direct and effective observation and shooting means, the severe requirements are set for the installation and use process of the model, and particularly for a larger model, the installation and debugging process on the water surface is more complex, the test difficulty is further increased, and the use of the model is limited.

Disclosure of Invention

Based on the above, it is necessary to provide a towing tank and a hydrodynamic test system capable of reducing cost and complexity of process, facilitating multi-azimuth shooting and observation, and avoiding the influence of trailer vibration on test results, aiming at the problems of high cost, inconvenient shooting and observation, and the influence of trailer vibration on test result accuracy of the conventional towing tank.

A towing tank, comprising:

a preset distance exists between the transparent pool main body and the ground;

the support structure is positioned on the outer side of the pool main body, a preset distance exists between the support structure and the pool main body, the bottom of the support structure is supported on the ground, and the top of the support structure is positioned above the top of the pool main body;

the trailer structure is movably arranged on the top of the supporting structure and slides relative to the pool main body along the supporting structure; and

the central bridge measurement structure is arranged on the trailer structure and is used for connecting test equipment, and the bottom of the test equipment stretches into the pool main body.

In one embodiment, the pool main body comprises a plurality of transparent toughened glass and a plurality of supporting steel structural members, and the toughened glass is spliced and connected with the supporting steel structural members to form the pool main body;

The towing tank further comprises a support column, wherein the support column is arranged at the bottom of the tank main body and supports the bottom of the tank main body away from the ground;

the pool main body further comprises a sealing piece, and the sealing piece is arranged at the joint of the toughened glass and the supporting steel structural member;

the number of layers of the toughened glass is double;

the length dimension of the pool main body ranges from 50m to 100m, the width dimension of the pool main body ranges from 2m to 4m, and the height of the pool main body ranges from 1.5m to 3.5m.

In one embodiment, the support structure includes a first support frame and a trailer rail, the first support frame is located at an outer side of the pool main body and has the preset distance from the pool main body, the trailer rail is disposed at a top of the first support frame and is located above the pool main body, and the trailer structure is movably disposed on the trailer rail;

the support structure further comprises an adjusting piece, and a plurality of adjusting pieces are connected with the trailer guide rail and the first support frame and used for adjusting the flatness of the trailer guide rail.

In one embodiment, the trailer structure comprises a second support frame, an operation platform, a first driving assembly and a plurality of trailer wheels, wherein the plurality of trailer wheels are arranged at the bottom of the second support frame and are movably arranged on the trailer guide rail, the first driving assembly is arranged on the second support frame and is connected with the plurality of trailer wheels, and the operation platform is arranged on the second support frame;

The first driving assembly comprises a first driving motor and a first coupling, and the output end of the first driving motor is connected with two opposite trailer wheels through the first coupling.

In one embodiment, the trailer structure further comprises at least one first guiding component, wherein the first guiding component is arranged on the second supporting frame and moves along the trailer guide rail, and the first guiding component is used for guiding the movement of the trailer structure;

the first guide assembly comprises a first mounting seat and two guide wheels, one end of the first mounting seat is arranged on the second supporting frame, the other end of the first mounting seat extends towards the trailer guide rail, and the two guide wheels are symmetrically arranged on two sides of the first mounting seat and are abutted to two side faces of the trailer guide rail.

In one embodiment, the trailer structure further comprises a speed measuring assembly, wherein the speed measuring assembly is arranged at the bottom of the second support frame and is abutted against the trailer guide rail;

the speed measuring assembly comprises a speed measuring wheel, a second mounting seat and a speed measuring encoder, the second mounting seat is arranged on the second supporting frame, the speed measuring wheel is mounted on the second mounting seat, and the speed measuring encoder is connected with the speed measuring wheel;

The speed measuring assembly further comprises an elastic piece, the elastic piece is elastically connected with the second mounting seat and the second supporting frame, so that the speed measuring wheel is abutted to the trailer guide rail, or the second mounting seat is made of elastic materials.

In one embodiment, the central bridge measurement structure comprises a third support frame, a fourth support frame, a first support beam and a second driving assembly, wherein the third support frame is arranged on the second support frame, the second driving assembly is arranged on the third support frame, the output end of the second driving assembly is connected with the fourth support frame and is used for driving the fourth support frame to do lifting movement, and the first support beam is arranged on the fourth support frame and is used for installing the test equipment;

the second driving assembly comprises a second driving motor and a lifting component, the output end of the second driving motor is connected with the lifting component, and the output end of the lifting component is connected with the fourth supporting frame;

the central bridge measurement structure further comprises a second guide assembly, the second guide assembly is connected with the third support frame and the fourth support frame in a guiding mode, the second guide assembly comprises a linear guide rail and a connecting block, the linear guide rail is arranged on the third support frame in the vertical direction, the connecting block is arranged on the fourth support frame, and the connecting block is slidably arranged on the linear guide rail.

In one embodiment, the fourth support frame includes two second support beams, two third support beams and two first slide rails, the two second support beams and the two third support beams are spliced to form a frame structure, the two first slide rails are disposed on the opposite second support beams, and the first support beams are slidably disposed on the first slide rails;

the fourth support frame further comprises a first sliding block, the first sliding block is arranged at the bottom of the first support beam, and the first sliding block can be arranged on the first sliding rail in a sliding manner;

the fourth support frame further comprises a locking block, wherein the locking block is slidably arranged on the first sliding rail and used for locking or unlocking the first support beam to the second support beam.

In one embodiment, the number of the first supporting beams is two, wherein the top of one first supporting beam is provided with a second sliding rail, the top of the other first supporting beam is provided with a third sliding rail, the second sliding rail is provided with a square arrangement or a limit tooth part, and the third sliding rail is provided with a limit inclined plane.

A hydrodynamic test system comprising test equipment and a towing tank according to any one of the above technical features;

The test equipment is instrument equipment or test equipment;

the testing equipment comprises a test model, a model clamp, a web plate, a testing structure and a mounting structure, wherein the mounting structure is arranged on a central bridge testing structure of the towing tank, the testing structure is arranged at the bottom of the mounting structure, the web plate is arranged at the bottom of the testing structure, the bottom of the web plate is detachably connected with the model clamp, and the model clamp is detachably connected with the test model;

the test structure comprises a force measuring component and a connecting plate, wherein the force measuring component is connected with the web plate and the mounting structure through the connecting plate;

the mounting structure comprises a fixed frame, a second sliding block, a limiting block and a third sliding block, wherein the second sliding block or the limiting block is arranged at the bottom of the fixed frame with the third sliding block, the second sliding block is matched with a square second sliding rail of the central bridge measuring structure, the limiting block is matched with a second sliding rail of the central bridge measuring structure, the second sliding rail is provided with limiting teeth, and the third sliding block is matched with a third sliding rail of the central bridge measuring structure.

After the technical scheme is adopted, the application has at least the following technical effects:

The utility model provides a drag water pond and hydrodynamic force test system, this drag water pond adopts transparent pond main part to test, bearing structure is located the outside of pond main part, bearing structure's bottom sprag is subaerial, bearing structure's top is located the top at pond main part top, the movable setting of trailer structure is at bearing structure, the central bridge structure that surveys sets up on the trailer structure, can follow trailer structure synchronous motion, the central bridge structure that surveys installs test equipment, this test equipment can stretch into in the pond main part and test. During the test, the trailer drives the test equipment to move along the supporting structure through the central bridge measuring structure, so that the test equipment stretches into the pool main body and contacts with water in the pool main body, and the hydrodynamic performance test of the test equipment is realized.

The towing tank adopts the transparent tank main body to carry out hydrodynamic performance test, the transparent tank is positioned above the ground and has a certain distance with the ground, the towing tank is not required to be realized by downward grooving, the molding of the towing tank is convenient, the complexity of the process is reduced, and the production cost is reduced. Meanwhile, as the pool main body is transparent, an operator can shoot test equipment in the pool main body through the transparent pool main body at the side or the bottom, so that multi-azimuth shooting and observation are realized, the running condition of the test equipment in water is known, the position of the test equipment can be directly adjusted in the water according to the shooting and observation condition, the test difficulty is reduced, and the test operation is convenient. Meanwhile, a preset distance exists between the supporting structure and the pool main body, so that the supporting structure and the pool main body are arranged separately, the pool main body is prevented from vibrating when the trailer structure operates, and high-precision measurement is realized.

Drawings

Fig. 1 is a front view of a towing tank according to an embodiment of the present application.

Fig. 2 is a side view of the towing tank shown in fig. 1.

Fig. 3 is a perspective view of the trailer structure of the towing tank shown in fig. 1 with a central bridge structure mounted thereon.

Fig. 4 is a perspective view of the center bridge structure shown in fig. 3.

Fig. 5 is a partial schematic view of the top of the center bridge structure shown in fig. 4.

Fig. 6 is a partial enlarged view of fig. 3 at a.

Fig. 7 is a perspective view of a measurement device mated with the towing tank shown in fig. 1, wherein the test model to which the measurement device is connected is an airfoil model.

Fig. 8 is a schematic view of a web-linked rotor model in the measuring apparatus shown in fig. 7.

Fig. 9 is a schematic view of a web-connecting plate model in the measuring apparatus shown in fig. 7.

Fig. 10 is an enlarged view of a portion of the connecting web of the load cell in the measuring device shown in fig. 7.

Wherein: 100. a towing tank; 110. a pool body; 111. tempered glass; 112. supporting the steel structural member; 120. a support structure; 121. a first support frame; 122. a trailer rail; 123. an adjusting member; 130. a trailer structure; 131. a second support frame; 132. an operating platform; 133. a first drive assembly; 1331. a first driving motor; 1332. a first coupling; 1333. a first speed reducer; 1334. a motor base; 134. a trailer wheel; 135. a first guide assembly; 1351. a first mount; 1352. a guide wheel; 136. a speed measuring component; 1361. a second mounting base; 1362. a tachometer wheel; 140. a central bridge measurement structure; 141. a third support frame; 1411. a mounting plate; 142. a fourth support frame; 1421. a second support beam; 1422. a third support beam; 1423. a first slide rail; 1424. a first slider; 143. a first support beam; 144. a second drive assembly; 1441. a second driving motor; 1442. a lifting member; 14421. lifting the screw rod; 14422. lifting the nut; 1443. a second speed reducer; 1444. a second coupling; 145. a second guide assembly; 1451. a linear guide rail; 1452. a connecting block; 146. a locking block; 147. a second slide rail; 148. a third slide rail; 160. a support column; 200. a testing device; 210. a mounting structure; 211. a fixed frame; 212. a second slider; 213. a third slider; 214. a first stopper; 215. a second stopper; 220. a force measuring structure; 221. a force measuring part; 222. a connecting plate; 230. a web; 241. a rectangular clamp; 242. i-shaped clamp; 251. a revolution body model; 252. an airfoil model; 253. and (5) a flat plate model.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1-10, a towing tank 100 is provided. The towing tank 100 is used for performing hydrodynamic tests, and can be used for performing hydrodynamic performance (such as resistance) tests of models of ships, underwater vehicles and the like. The towing tank 100 may also be configured with various other accessory components, such as a propeller hydrokinetic apparatus, to perform a propeller hydrokinetic performance test.

It can be understood that the current towing tank is usually grooved downwards from the ground, forms a tank main body through reinforced cement pouring, has high cost and complex process, cannot directly and effectively observe and shoot, influences the adjustment of test equipment in water, increases the debugging process, thereby increases the test difficulty, and is inconvenient for operators to use.

For this reason, this application provides a novel drag pond 100, and this drag pond 100 need not to dig the groove downwards and realizes, and drag pond 100 shaping of being convenient for reduces the complexity of technology, reduction in production cost can also make things convenient for operating personnel to directly shoot and observe simultaneously to know the running condition of test equipment in water, and can be according to shooting and the position of the direct adjustment test equipment of observation condition in water, reduce the test degree of difficulty, the test operation of being convenient for. The following describes a specific structure of an embodiment of the towing tank 100.

Referring to fig. 1 and 2, in one embodiment, the towing tank 100 includes a transparent tank body 110, a support structure 120, a trailer structure 130, and a center bridge structure 140. A predetermined distance exists between the sump body 110 and the ground. The support structure 120 is located at the outer side of the sump body 110, the bottom of the support structure 120 is supported on the ground, and the top of the support structure 120 is located above the top of the sump body 110. The trailer structure 130 is movably disposed on top of the support structure 120 and slides along the support structure 120 relative to the pool body 110. The center bridge structure 140 is disposed on the trailer structure 130 for connecting with test equipment, the bottom of which extends into the pool body 110.

The main body 110 is a main component of the towing tank 100 for performing hydrodynamic performance test, and the main body 110 is a hollow structure in which a liquid for test, typically water, is carried. The pond main part 110 adopts transparent structural design, and like this, operating personnel can observe aquatic test equipment and running situation thereof directly through pond main part 110, and operating personnel can directly adjust, simultaneously, still accessible transparent pond main part 110 shoots and observes aquatic test equipment to satisfy hydrodynamic performance's test demand.

Also, a predetermined interval exists between the bottom of the sump body 110 and the ground. That is, the sump body 110 is supported off the ground such that there is a certain distance between the bottom of the sump body 110 and the ground, and an operator can observe and photograph the test equipment at the bottom of the sump to meet various test requirements. The ground surface here is a mounting reference surface of the towing tank 100, may be an actual ground surface, or may be a top surface of a platform, so long as the towing tank 100 can be carried, and the ground surface will not be described in detail later.

Optionally, the towing tank 100 further includes a support column 160, where the support column 160 is disposed at the bottom of the tank body 110 and supports the bottom of the tank body 110 off the ground. I.e., the sump body 110 is brought into contact with the ground through the support columns 160, thereby realizing that the bottom of the sump body 110 is supported off the ground. The number of the support columns 160 is plural, and the plurality of support columns 160 are disposed at intervals at the bottom of the sump body 110 to reliably support the sump body 110. Alternatively, the support column 160 is a steel structure or other form of structure that enables reliable support. Alternatively, the support columns 160 may be integrally formed with or separately provided from the support steel structural members 112 (to be mentioned later) of the sump body 110.

The support structure 120 is additionally arranged on the outer side of the pool main body 110, and the support of the trailer structure 130, the central bridge measuring structure 140 and the test equipment is realized through the support structure 120, so that the reliability of the use of the pool main body 110 is ensured. The bottom of the support structure 120 is supported on the ground, the top of the support structure 120 is higher than the top of the pool body 110, and the trailer structure 130 does not interfere with the top of the pool body 110 as the trailer structure 130 moves along the top of the support structure 120.

The trailer structure 130 is provided with a central bridge structure 140, and the central bridge structure 140 is provided with test equipment. The test device may be an instrument, such as an open water power meter or other instrument that needs to be attached to the central bridge structure 140 and capable of performing a hydrodynamic performance test, or the test device 200, such as by connecting different types of test models, such as a gyrorotor model 251, an airfoil model 252, a flat panel model 253, etc., with a dedicated fixture, as will be described in detail below.

In the hydrodynamic performance test, the test equipment is installed on the central bridge structure 140, the bottom of the test equipment is extended into the water in the pool main body 110, and the trailer structure 130 drives the test equipment to move along the top of the supporting structure 120 through the central bridge structure 140, so that the bottom of the test equipment moves in the water. The hydrodynamic performance test of the test equipment is realized through the movement of the test equipment in water.

The towing tank 100 in the above embodiment adopts the transparent tank main body 110 for hydrodynamic performance test, the transparent tank is located above the ground and has a certain distance from the ground, the towing tank 100 is not required to be grooved downwards, the molding of the towing tank 100 is convenient, the complexity of the process is reduced, and the production cost is reduced. Meanwhile, as the pool main body 110 is transparent, an operator can shoot test equipment in the pool main body 110 through the transparent pool main body 110 at the side or the bottom, so that multi-azimuth shooting and observation are realized, the running condition of the test equipment in water is known, the position of the test equipment can be directly adjusted in the water according to the shooting and observation condition, the test difficulty is reduced, and the test operation is convenient.

Optionally, a predetermined distance exists between the support structure 120 and the sump body 110. That is, the support structure 120 is provided separately from the sump body 110, and the support structure 120 and the sump body 110 are independent of each other, and there is no connection relationship between them. In this way, the vibration generated by the trailer structure 130 in the running process is not transmitted to the pool main body 110, so that the high-precision measurement can be realized without causing the problems of vibration, water surface fluctuation, measurement error and the like of the pool main body 110 while the trailer structure 130 runs at a high speed (the highest speed can reach 4 m/s). Meanwhile, the weight of the trailer structure 130 is finally transferred to the ground through the supporting structure 120, so that the weight of the trailer structure 130 is prevented from being loaded on the pool main body 110, and the problems of deformation, cracking, instability and the like of the pool main body 110 are avoided, so that the trailer structure 130 can carry out large-model and high-weight bearing (such as bearing an open water power instrument) and the like, thereby providing possibility for expanding the types of test equipment.

Optionally, the central bridge structure 140 has an interface (e.g. a first support beam 143 mentioned later) for mounting test equipment, enabling the connection of different types of equipment. Optionally, the central bridge structure 140 also has a replaceable force interface (such as a web 230, hereinafter) thereon to replace a different test model. The specific structure of the central bridge structure 140 is mentioned later.

Referring to fig. 1 and 2, in one embodiment, the sump body 110 includes a plurality of transparent tempered glass 111 and a plurality of supporting steel structural members 112, and the tempered glass 111 is spliced with the supporting steel structural members 112 to form the sump body 110. The plurality of toughened glass 111 splice to form the rectangular structural style that has the open-ended in top, set up the support steel structure 112 between the junction of at least part toughened glass 111, that is to say, set up the support steel structure 112 between the adjacent toughened glass 111, splice through the support steel structure 112 and connect two adjacent toughened glass 111 to improve the structural strength of pond main part 110, avoid the pond main part 110 to appear the problem such as deformation, unstability, fracture.

Alternatively, the tempered glass 111 is super white tempered glass. Of course, in other embodiments of the present invention, the tempered glass 111 may be other types of transparent glass, as long as it has a certain structural strength and can bear a certain water pressure.

In one embodiment, the pool body 110 further includes a seal disposed at the junction of the tempered glass 111 and the supporting steel structure 112. The sealing piece is used for guaranteeing the sealing performance of the joint of the toughened glass 111 and the supporting steel structural part 112, so that firm and reliable sealing is realized. Optionally, the seal is a sealant, i.e. a firm and reliable seal is ensured by means of gluing.

In one embodiment, the number of layers of the tempered glass 111 is two. That is, the pool main body 110 of the present application adopts a structure of the double-layer tempered glass 111, so that the structural strength of the pool main body 110 can be improved, the tempered glass 111 in the inner layer of the pool main body 110 is broken, and water can be carried through the tempered glass 111 in the outer layer. In other embodiments of the present invention, if the structural strength of the tempered glass 111 is high, the tank main body 110 may be made of a single layer of the tempered glass 111, and of course, the tank main body 110 may be made of more layers of the tempered glass 111.

In one embodiment, the length dimension of the sump body 110 ranges from 50m to 100m, the width dimension of the sump body 110 ranges from 2m to 4m, and the height of the sump body 110 ranges from 1.5m to 3.5m. The sump body 110 in the present application has a large size, particularly in the length direction, so that a long effective test interval (a test interval of at least 10s at a maximum speed of 4 m/s) can be ensured, thereby ensuring the reliability and repeatability of measurement data. Further, since the cross-sectional area of the sump body 110 is large, it is ensured that various types, various sizes of test models including the revolution body model 251, the airfoil model 252, the flat plate model 253, and the like are measured.

It should be noted that the size range of the pool main body 110 is not limited in principle, as long as the test requirements can be satisfied. The drag pond 100 of the present application is a large structure that can provide advantages for measuring test models of different sizes in a test apparatus. Illustratively, the length dimension of the sump body 110 is 87m, the width dimension is 3m, and the height dimension is 2.4m, so that the sump body 110 has a long length, a long effective test period (a test period of at least 10s at a maximum speed of 4 m/s) can be secured, and thus reliability and repeatability of measurement data can be secured.

Referring to fig. 1 and 2, in one embodiment, the support structure 120 includes a first support frame 121 and a trailer rail 122, the first support frame 121 is located at an outer side of the sump body 110 and has a predetermined distance from the sump body 110, the trailer rail 122 is disposed on top of the first support frame 121 and above the sump body 110, and the trailer structure 130 is movably disposed on the trailer rail 122.

The first support frame 121 is a main body frame of the support structure 120, and plays a main supporting role. The first support frame 121 is located at an outer side of the sump body 110 and spaced apart from the sump body 110 by a certain distance, so that the support structure 120 and the sump body 110 are independent from each other, and vibration of the trailer structure 130 is prevented from being transferred to the sump body 110, and meanwhile, a force carried by the sump body 110 can be relieved. The bottom of the first support frame 121 is supported on the ground, the top of the first support frame 121 is higher than the top of the pool body 110, the trailer rail 122 is disposed on the top of the first support frame 121, and the trailer structure 130 is movably disposed on the trailer rail 122 and is movable along the trailer rail 122.

The first support frame 121 is a frame structure formed by splicing cross beams and longitudinal beams, and the first support frame 121 is in a cuboid-like structure and is sleeved on the outer side of the pool main body 110 to support the trailer structure 130. Furthermore, the first support frame 121 further includes an inclined beam, which inclines the support beam or the longitudinal beam, ensuring the stability of the structure of the first support frame 121. Of course, in other embodiments of the present application, the first support frame 121 may be in other structural forms that enable stable support of the trailer structure 130.

Alternatively, the number of the trailer rails 122 is two, the two trailer rails 122 are symmetrically disposed on the top of the first support frame 121 along the length direction of the pool body 110, and the trailer structure 130 is movably disposed on the two opposite trailer rails 122. In this way, stability of movement of the trailer structure 130 relative to the pool body 110 can be ensured. Alternatively, each trailer rail 122 may be divided into multiple sections to facilitate manufacturing and assembly of the trailer rail 122. In assembly, the multi-section trailer rail 122 is spliced directly to the top of the first support frame 121.

In an embodiment, the support structure 120 further includes an adjusting member 123, where the plurality of adjusting members 123 connect the trailer rail 122 with the first support frame 121 for adjusting the flatness of the trailer rail 122. The trailer guide rail 122 is disposed on the first support frame 121 through the adjusting member 123, if the trailer guide rail 122 is too high or too low at a certain position, the height of the trailer guide rail 122 is adjusted through the adjusting member 123, so that the overall level of the trailer guide rail 122 is ensured, and the flatness of the trailer guide rail 122 is ensured, so that the motion stability of the trailer structure 130 is ensured.

Alternatively, the adjusting member 123 is in the form of a bolt-nut connection. Optionally, the number of the adjusting members 123 is plural, and the plurality of adjusting members 123 are disposed at intervals on the trailer rail 122. Of course, in other embodiments of the present application, the adjustment member 123 may be other structures that enable height adjustment of the trailer rail 122.

Referring to fig. 1 and 3, in an embodiment, the trailer structure 130 includes a second support frame 131, an operation platform 132, a first driving assembly 133, and a plurality of trailer wheels 134, wherein the plurality of trailer wheels 134 are disposed at the bottom of the second support frame 131 and movably disposed on the trailer rail 122, the first driving assembly 133 is disposed on the first support frame 121 and connected to the plurality of trailer wheels 134, and the operation platform 132 is disposed on the second support frame 131.

The second support frame 131 is a body frame of the trailer structure 130, and the respective components of the trailer structure 130 are supported by the second support frame 131 so that the trailer structure 130 forms a single body. Optionally, the second support frame 131 is a frame structure formed by splicing a cross beam and a longitudinal beam. Of course, in other embodiments of the present application, the second supporting frame 131 may also be formed by splicing plates, or formed by splicing beams and plates, so long as the components of the trailer structure 130 can be installed and the central bridge structure 140 is carried.

A plurality of trailer wheels 134 are spaced apart at the bottom of the second support frame 131 such that the trailer wheels 134 can contact the trailer rail 122 and the trailer wheels 134 roll along the trailer rail 122 to move the trailer structure 130 along the trailer rail 122. Illustratively, the number of trailer wheels 134 is four, four trailer wheels 134 are provided at four corners of the second support frame 131, and two wheels are provided per trailer rail 122.

The operation platform 132 is arranged on one side of the second operation frame, and the operation platform 132 is used for an operator to stand so as to adjust the structure of the test equipment, and meanwhile, some parts or controllers and the like can be placed on the operation platform 132, so that the operation of the operator is facilitated. It should be noted that the structural form of the operation platform 132 is not limited in principle, as long as the operation platform can meet the use requirement. Illustratively, the operator platform 132 is a planar arrangement.

Referring to fig. 1 and 3, in one embodiment, the first drive assembly 133 includes a first drive motor 1331 and a first coupling 1332, with the output of the first drive motor 1331 being coupled to two opposing trailer wheels 134 via the first coupling 1332. The output end of the first driving motor 1331 is connected with a first coupling 1332, and two ends of the first coupling 1332 are respectively connected with a trailer wheel 134. When the first driving motor 1331 works, the first driving motor 1331 can drive the first coupling 1332 to rotate, and then the first coupling 1332 drives the two trailer wheels 134 to synchronously rotate, so that the movement of the trailer structure 130 is controlled.

Optionally, the first driving assembly 133 further includes a first speed reducer 1333, and the first speed reducer 1333 connects the first driving motor 1331 and the first coupling 1332. That is, the input end of the first speed reducer 1333 is connected to the output end of the first driving motor 1331, and the output end of the first speed reducer 1333 is connected to the first coupling 1332. It will be appreciated that if the rotational speed of the output of the first driving motor 1331 is too high, the movement of the output of the first driving motor 1331 is directly used to drive the trolley wheel 134 to rotate, which results in too high a speed of the trolley wheel 134, which is detrimental to the test operation. After deceleration by the first speed reducer 1333, the speed of the trailer wheel 134 can be made to be within a reasonable range.

Optionally, the first driving assembly 133 further includes a motor base 1334, the motor base 1334 is disposed on the second supporting frame 131, and the first driving motor 1331 is disposed on the motor base 1334. Optionally, the number of first driving assemblies 133 is two, and each first driving assembly 133 is connected to two trailer wheels 134 to drive the corresponding trailer wheels 134 to rotate. In this way, smooth movement of the trailer wheels 134 can be ensured, and resistance to movement of the trailer structure 130 can be reduced. Optionally, the trailer structure 130 further includes a synchronizer electrically connected to the first driving motors 1331 of the two first driving assemblies 133, so that the two first driving motors 1331 can synchronously move, thereby making the movement states of the respective trailer wheels 134 consistent and ensuring that the trailer structure 130 moves stably.

Referring to fig. 1 and 3, in one embodiment, the trailer structure 130 further includes at least one first guiding assembly 135, the first guiding assembly 135 being disposed on the second support frame 131 and moving along the trailer rail 122, the first guiding assembly 135 being configured to guide movement of the trailer structure 130. The first guiding component 135 is disposed on the first supporting structure 120 and can move along the trailer rail 122, and the first guiding component 135 guides the movement of the trailer structure 130 along the trailer rail 122, so as to ensure the accuracy of the movement track of the trailer structure 130 and avoid the deviation of the movement of the trailer structure 130.

In an embodiment, the first guiding assembly 135 includes a first mounting seat 1351 and two guiding wheels 1352, one end of the first mounting seat 1351 is disposed on the second supporting frame 131, the other end of the first mounting seat 1351 extends towards the trailer rail 122, and the two guiding wheels 1352 are symmetrically disposed on two sides of the first mounting seat 1351 and abut against two sides of the trailer rail 122.

The first mounting seat 1351 is a mounting seat for mounting the guide wheel 1352, one end of the first mounting seat 1351 is disposed at the end of the second support frame 131 and is disposed near the trailer rail 122, and the other end of the first mounting seat 1351 extends in a direction away from the second support frame 131, that is, the first mounting seat 1351 is in a cantilever beam structure and extends in a direction toward the trailer rail 122. The two guide wheels 1352 are rollably and symmetrically disposed behind the first mounting base 1351, and the space between the two guide wheels 1352 is the width of the trailer rail 122. In this way, the two guide wheels 1352 can abut against the inner and outer sides of the trailer rail 122 in the width direction, respectively. As the trailer structure 130 moves along the trailer rail 122, the guide wheels 1352 roll along the inside and outside of the trailer rail 122 to ensure that the trailer wheels 134 roll in the trailer rail 122, avoiding trial failure due to deviation of the trailer structure 130 from a predetermined direction of movement.

Alternatively, the number of the first guiding assemblies 135 is two, and the two first guiding assemblies 135 are disposed on the second supporting frame 131 corresponding to the two feet of the same trailer rail 122 and respectively correspond to the two trailer wheels 134. Each first guide assembly 135 guides one of the trailer wheels 134 to ensure movement of the trailer wheels 134 within the trailer rail 122. That is, the present application guides the motion of the trailer structure 130 through the four guide wheels 1352, so as to ensure that the motion of the trailer structure 130 is accurate.

Referring to fig. 1 and 3, in an embodiment, the trailer structure 130 further includes a speed measuring assembly 136, and the speed measuring assembly 136 is disposed at the bottom of the second support frame 131 and abuts against the trailer rail 122. The speed measurement assembly 136 is rotatably abutted against the trailer rail 122, and the trailer rail 122 is rotatable to measure the speed of movement of the trailer structure 130 in real time to control the trailer structure 130. If the speed of the trailer structure 130 is too high, it may be braked by the first drive motor 1331 or by a hydraulic brake mounted on the second support frame 131.

In one embodiment, the tachometer assembly 136 includes a tachometer wheel 1362, a second mount 1361, and a tachometer encoder, the second mount 1361 is disposed on the second support frame 131, the tachometer wheel 1362 is mounted on the second mount 1361, and the tachometer encoder is connected with the tachometer wheel 1362. Tachometer wheel 1362 is rotatably mounted to second mount 1361 and tachometer wheel 1362 is capable of abutting trailer rail 122. Thus, as trailer structure 130 moves along trailer rail 122, tachometer wheel 1362 is able to rotate along trailer rail 122, and thus, as tachometer wheel 1362 rotates, tachometer encoder can detect the rotational speed of tachometer wheel 1362 in real time. The signal of the tachometer encoder is connected in series in the control loop of the trailer structure 130 for realizing feedback of the speed of the trailer structure 130.

In an embodiment, the tachometer assembly 136 further includes an elastic member, and the elastic member is elastically connected to the second mounting seat 1361 and the second support frame 131, so that the tachometer wheel 1362 abuts against the trailer rail 122. The second braced frame 131 is connected to the one end of elastic component, and the second mount pad 1361 is connected to the other end of elastic component, and the elastic force of elastic component can make tachometer wheel 1362 butt all the time at trailer guide rail 122 for form no slip roll between tachometer wheel 1362 and the trailer guide rail 122, in order to guarantee the accuracy of measuring speed. Optionally, the elastic member is an elastic column.

In one embodiment, second mount 1361 is fabricated from an elastomeric material. That is, the second mounting seat 1361 has an elastic force, which can make the tachometer wheel 1362 always abut against the trailer rail 122, so that no sliding rolling is formed between the tachometer wheel 1362 and the trailer rail 122, so as to ensure accuracy of speed measurement. Of course, in other embodiments of the present application, the elastic member may be other structures that ensure that the tachometer wheel 1362 abuts the trailer rail 122.

Referring to fig. 3 and 4, the center bridge structure 140 is a main component of the towing tank 100 that performs a measuring function, and different hydrodynamic performance tests are performed by carrying different test equipment. In one embodiment, the central bridge structure 140 is capable of moving the test equipment up and down. That is, the central bridge structure 140 can drive the test device to move up and down to adjust the depth of the test model of the test device extending into the pool main body 110, so as to simulate the hydrodynamic performance of the test model under different water depths. It will be appreciated that when the test apparatus is the test apparatus 200, the bottom of the test apparatus 200 is connected to the test model, and the hydrodynamic performance of the test model is mainly tested, so that the test model extends into the water in the pool main body 110 during the test.

Referring to fig. 4, in an embodiment, the central bridge measurement structure 140 includes a third support frame 141, a fourth support frame 142, a first support beam 143, and a second driving assembly 144, where the third support frame 141 is disposed on the second support frame 131, the second driving assembly 144 is disposed on the third support frame 141, and an output end of the second driving assembly 144 is connected to the fourth support frame 142 and is used for driving the fourth support frame 142 to perform lifting motion, and the first support beam 143 is disposed on the fourth support frame 142 and is used for installing test equipment.

The third support frame 141 is the main body frame of the central bridge measurement structure 140, the third support frame 141 is fixedly mounted to the second support frame 131 of the trailer structure 130, the fourth support frame 142 is a main component of the central bridge measurement structure 140 connected with test equipment, the second driving assembly 144 is fixedly arranged on the third support frame 141, the output end of the second driving assembly 144 is connected with the fourth support frame 142, and the second driving assembly 144 can drive the fourth support frame 142 to do lifting motion, so that the depth of the test model in water is adjusted. The first support beam 143 is arranged on top of the fourth support frame 142, and the fourth support frame 142 is connected to the test equipment by means of the first support beam 143.

Alternatively, the number of first support beams 143 is two, and a reliable fixing of the test device is achieved by the two first support beams 143. It will be appreciated that the test device may include an instrument device, where the instrument device mainly refers to an instrument when the hydrodynamic performance test is performed by an open hydrodynamic device or the like, and may also be a test device 200, where the test device 200 refers to a special device for testing a test model, and the test model is clamped by the test device 200, so that the test model can be stretched into water, so as to implement the hydrodynamic performance test on the test model.

Alternatively, the first support beam 143 may be movably disposed at the fourth support frame 142. In this way, the position of the first support beam 143 in the fourth support frame 142 can be adjusted, thereby adjusting the position of the test equipment in the fourth support frame 142 such that the test equipment is in a desired position. Alternatively, the third support frame 141 has a mounting plate 1411, and the mounting plate 1411 is fixed to the second support frame 131 by screws. It should be noted that the structural form of the third supporting frame 141 is not limited in principle, as long as the third supporting frame 141 can perform supporting and connecting functions. Alternatively, the mounting plate 1411 is fixed to an end surface of the third support frame 141 by welding, as shown in fig. 6. The third supporting frames 141 are illustratively in the form of frames, and the number of the third supporting frames 141 is two, symmetrically disposed at both sides of the fourth supporting frame 142. Of course, in other embodiments of the present application, the third support frame 141 may be one, and located outside the fourth support frame 142, as long as the movement of the fourth support frame 142 is not affected.

Referring to fig. 4, in an embodiment, the second driving assembly 144 includes a second driving motor 1441 and a lifting member 1442, an output end of the second driving motor 1441 is connected to the lifting member 1442, and an output end of the lifting member 1442 is connected to the fourth support frame 142. The second driving motor 1441 is a power source for lifting the test equipment, the second driving motor 1441 is fixed to the third supporting frame 141, the second driving motor 1441 can drive the lifting component 1442 to do lifting motion, and then the lifting component 1442 can drive the fourth supporting frame 142 to do lifting motion relative to the third supporting frame 141, so that the adjustment of the depth of the test model in water is achieved.

In one embodiment, the lifting component 1442 includes a lifting screw 14421 and a lifting nut 14422, where the lifting screw 14421 is connected to the output end of the second driving motor 1441, and the lifting nut 14422 is disposed on the lifting screw 14421 and the lifting nut 14422 is connected to the fourth supporting frame 142. When the second driving motor 1441 drives the lifting screw 14421 to rotate, the lifting screw 14421 drives the lifting nut 14422 to perform lifting motion, and then drives the fourth supporting frame 142 to lift through the lifting nut 14422. Of course, in other embodiments of the present application, the lifting member 1442 may also be other structures capable of outputting lifting motion. Optionally, the lifting screw 14421 is a trapezoidal screw.

In an embodiment, the second driving assembly 144 further includes a second speed reducer 1443, and the second speed reducer 1443 connects the second driving motor 1441 with the lifting member 1442. That is, the input end of the second speed reducer 1443 is connected to the output end of the second driving motor 1441, and the output end of the second speed reducer 1443 is connected to the lifting member 1442. The motion output by the second driving motor 1441 is decelerated by the second decelerator 1443, so as to meet the rotation requirement of the lifting screw 14421. Optionally, the second driving assembly 144 further includes a second coupling 1444, where the second coupling 1444 connects the second driving motor 1441 and the second speed reducer 1443.

Referring to fig. 4, in an embodiment, the central bridge structure 140 further includes a second guiding component 145, and the second guiding component 145 is connected to the third supporting frame 141 and the fourth supporting frame 142 in a guiding manner. The second guiding component 145 is used for guiding the lifting motion of the fourth supporting frame 142, so that the lifting motion track of the fourth supporting frame 142 is accurate, the lifting track of the test model is accurate, and deflection is avoided.

In an embodiment, the second guiding assembly 145 includes a linear guide 1451 and a connecting block 1452, the linear guide 1451 is disposed on the third supporting frame 141 along a vertical direction, the connecting block 1452 is disposed on the fourth supporting frame 142, and the connecting block 1452 is slidably disposed on the linear guide 1451. In this way, when the second driving assembly 144 drives the fourth supporting frame 142 to do lifting motion, the fourth supporting frame 142 can drive the connecting block 1452 to do lifting motion along the linear guide 1451, and the lifting motion is guided by the cooperation of the linear guide 1451 and the connecting block 1452, so as to ensure that the lifting motion track is accurate.

Referring to fig. 4, in an embodiment, the fourth supporting frame 142 includes two second supporting beams 1421, two third supporting beams 1422, and two first sliding rails 1423, the two second supporting beams 1421 and the two third supporting beams 1422 are spliced to form a frame structure, the two first sliding rails 1423 are disposed on the opposite second supporting beams 1421, and the first supporting beam 143 is slidably disposed on the first sliding rails 1423.

Two second support beams 1421 are disposed opposite to each other, two third support beams 1422 are disposed opposite to each other, and the second support beams 1421 are connected to the third support beams 1422 to form a frame structure. The first support beam 143 is disposed on the second support beam 1421, so that the first support beam 143, the second support beam 1421 and the third support beam 1422 form a double-layered structure, the lower layer is a frame formed by the second support beam 1421 and the third support beam 1422, and the upper layer is the first support beam 143. Further, the connection block 1452 is connected to the second support beam 1421 or the third support beam 1422. Alternatively, the first support beam 143 is i-steel. Of course, in other embodiments of the present application, the first support beam 143 may be other structures that can function as a support. Optionally, the second support beam 1421 and the third support beam 1422 are in the form of cross beams. Of course, in other embodiments of the present application, the second support beam 1421 and the third support beam 1422 may have other structures that can support and connect.

The first support beam 143 is overlapped on the two second support beams 1421, and the first support beam 143 is reciprocally slidable along the second support beams 1421 to adjust the position of the test apparatus. The top of the second support beam 1421 has a first sliding rail 1423, the first sliding rail 1423 is disposed along the length direction of the second support beam 1421, and the first support beam 143 is in sliding fit with the first sliding rail 1423. Optionally, the second support beam 1421 is a long beam and the third support beam 1422 is a short beam.

In an embodiment, the fourth supporting frame 142 further includes a first slider 1424, the first slider 1424 is disposed at the bottom of the first supporting beam 143, and the first slider 1424 is slidably disposed on the first sliding rail 1423. The bottom of the first supporting beam 143 is provided with a first sliding block 1424, and the first supporting beam 143 slides along the first sliding rail 1423 through the cooperation of the first sliding block 1424 and the first sliding rail 1423. Of course, in other embodiments of the present application, a sliding groove may be provided at the bottom of the first support beam 143 to slidably fit with the first sliding rail 1423.

When the central bridge measurement structure 140 adjusts the depth of the test equipment extending into the water, the second driving motor 1441 drives the lifting screw rod 14421 to move through the second speed reducer 1443, the lifting screw rod 14421 drives the lifting nut 14422 to do lifting movement, and the lifting nut 14422 drives the fourth supporting frame 142 to do lifting movement. The fourth support frame 142 can drive the connection block 1452 to lift on the lifting rail when lifting. In addition, a program is set for the second driving motor 1441, so that the second driving motor has a inching function, the central bridge measuring structure 140 is guaranteed to realize position control in the height direction, and the accuracy of the position control is improved.

Referring to fig. 4, in an embodiment, the fourth support frame 142 further includes a locking block 146, where the locking block 146 is slidably disposed on the first sliding rail 1423, for locking or unlocking the first support beam 143 to the second support beam 1421. The locking block 146 enables locking and unlocking of the first support beam 143 to fix the test equipment in a desired position. When the locking block 146 locks the first supporting beam 143, the first supporting beam 143 is fixed to the second supporting beam 1421 and cannot move along the first sliding rail 1423, so that the position of the test equipment is ensured to be initially fixed. When the locking block 146 unlocks the first support beam 143, the first support beam 143 can move freely relative to the second support beam 1421, so that the position of the test apparatus in the longitudinal direction of the second support beam 1421 can be adjusted.

Optionally, the locking block 146 includes a bolt and a clamping block, the clamping block is slidably disposed on the first sliding rail 1423, and the bolt can be screwed or unscrewed and disposed on the clamping block, and can abut against or separate from the second sliding rail 147, so as to lock or unlock the locking block 146. Of course, in other embodiments of the present invention, the locking block 146 may have other structures for locking and unlocking. Alternatively, the number of locking blocks 146 is eight, and since the number of the first supporting beams 143 is two, one locking block 146 is respectively disposed at two sides of the connection between the first supporting beam 143 and the first sliding rail 1423, so as to lock or unlock the first supporting beam 143.

Referring to fig. 4 and 5, in an embodiment, the number of the first support beams 143 is two, wherein the top of one first support beam 143 has a second sliding rail 147, the top of the other first support beam 143 has a third sliding rail 148, the second sliding rail 147 is square or has a limiting tooth, and the third sliding rail 148 has a limiting slope.

With the direction shown in fig. 4 as a reference, the top of the first support beam 143 on the left side is provided with a second slide rail 147, and the top of the first support beam 143 on the right side is provided with a third slide rail 148. The bottom of the test device has a second slider 212 and a third slider 213, the second slider 212 being engaged with the second slide 147 having a square shape and the third slider 213 being engaged with the third slide 148 when the test device is mounted on the first support beam 143. In this way, the unified second slide block 212 and the third slide block 213 and the corresponding second slide rail 147 and the third slide rail 148 are adopted to cooperate, so that different types of test equipment can be fixed on the first support beam 143, and the performance of the different test equipment can be measured conveniently.

The second sliding rail 147 has a limiting tooth portion, the third sliding rail 148 has a limiting inclined surface, the limiting block has engaging teeth matched with the limiting tooth portion, and the third sliding block 213 has a matching surface matched with the limiting inclined surface. When the test equipment is mounted on the first supporting beam 143, the matching surface and the limiting inclined surface are matched to limit the displacement of the test equipment along the length direction of the second supporting beam 1421, and the meshing teeth and the limiting tooth parts are matched to limit the displacement of the test equipment along the length direction of the first supporting beam 143. Of course, in other embodiments of the present application, the second sliding rail 147 and the second slider 212 or the limiting block may also implement the limiting of the test apparatus along the length direction of the first supporting beam 143 in other manners, and the third sliding rail 148 and the third slider 213 may also implement the limiting of the test apparatus along the length direction of the second supporting beam 1421 in other manners.

It can be appreciated that the second sliding rail 147 has two structural forms, one is square, at this time, the square second sliding rail 147 cooperates with the second sliding block 212, at this time, the second sliding rail 147 and the second sliding block 212 are limited by the first stopper 214, and the third sliding rail 148 and the third sliding block 213 are limited by the second stopper 215; the other is a second sliding rail 147 with a limiting tooth part, and the second sliding rail 147 is matched with the limiting block.

Referring to fig. 1 to 10, the towing tank 100 of the present application provides an advantage for measuring various types of test equipment of different sizes through a tank body 110 of large structural size. Meanwhile, the pool main body 110 is transparent, which provides favorable conditions for shooting the posture and running condition of the object in water in multiple directions and provides favorable conditions for observing and adjusting the posture of the model in the installation stage. Moreover, after the support structure 120 is separately arranged from the pool main body 110, the problems of vibration, water surface shaking, bearing deformation, cracking and the like of the pool main body 110 caused by movement of the trailer structure 130 are effectively avoided, favorable conditions are provided for high-precision measurement, and high-speed running and high bearing of the trailer structure 130 are enabled to be possible, so that the towing pool 100 can study the hydrodynamic performance of a model under a high Reynolds number, and the functions of the towing pool 100 can be further expanded by expanding other functional modules (such as a propeller open water power instrument).

The towing tank 100 is provided with an adjusting and installing structure on the central bridge measuring structure 140, so that test equipment such as an open water power meter and the like can be conveniently, quickly, efficiently and accurately installed on the trailer structure 130. The special testing equipment 200 which can be matched with different models is designed on the central bridge measuring system, so that the hydrodynamic performance of the revolving body model 251, the wing model 252 and the flat plate model 253 with different sizes can be measured. The central bridge measuring system is designed with a special lifting structure, so that the hydrodynamic performance of the test equipment under different water depths can be realized. By varying the speed of the trailer structure 130, the hydrodynamic performance of the test equipment at different speeds can be measured.

The towing tank 100 can realize the hydrodynamic performance of test models of different types and different sizes at high speed, can shoot and observe in multiple directions, has the characteristics of wide measurement model types, wide test model size range, high test speed, long test interval, high measurement precision, multiple-direction shooting and observation, strong expansibility, low cost and the like, and can meet different test requirements.

Referring to fig. 1-10, the present application also provides a hydrodynamic test system comprising a test apparatus and a towing tank 100 according to any of the embodiments described above. The hydrodynamic test system of the present application is formed by adding test equipment to the drag pool 100 in the above-described embodiment. The test device is an instrument device or, alternatively, the test device is a test device 200.

It will be appreciated that the test apparatus may comprise instrumentation, where the instrumentation is primarily a variety of instrumentation that requires hydrodynamic performance testing, such as open water power meters and the like. The test equipment can also be test equipment 200, wherein the test equipment 200 is special equipment for testing the test model, and the test model is clamped through the test equipment 200, so that the test model can be stretched into water, and the hydrodynamic performance test of the test model is realized. Typically, the instrumentation is not used at the same time as the test equipment 200.

The test models herein include, but are not limited to, a solid of revolution model 251, an airfoil model 252, a flat plate model 253, and the like. It should be noted that, since the instrument is usually an existing instrument, and the test apparatus 200 is formed by clamping the test model with a dedicated clamp, only the specific structure of the test apparatus 200 will be described herein.

Referring to fig. 7, in one embodiment, the test apparatus 200 includes a test pattern, a pattern fixture, a web 230, a test structure, and a mounting structure 210, the mounting structure 210 is mounted to the center bridge structure 140 of the towing tank 100, the test structure is mounted to the bottom of the mounting structure 210, the web 230 is mounted to the bottom of the test structure, the bottom of the web 230 is detachably connected to the pattern fixture, and the pattern fixture is detachably connected to the test pattern.

In this embodiment, the test structure is a force measuring structure 220, i.e. the test of hydrodynamic performance is implemented by measuring the resistance of water to the test model. Of course, in other embodiments of the present application, the test structure may perform other aspects of the test as well. With the direction shown in fig. 7 as a reference, the mounting structure 210 is a main body frame of the test apparatus 200, the top of the mounting structure 210 is mounted on the first support beam 143 of the central bridge measurement structure 140, the bottom of the mounting structure 210 is connected with the top of the force measurement structure 220, the bottom of the force measurement structure 220 is connected with the top of the web 230, the top of the web 230 is connected with the model clamp, and the bottom of the model clamp is connected with the corresponding test model. And the hydrodynamic performance test of the test model is realized through the test structure.

The bottom of web 230 is connected to the mold clamp by countersunk bolts. It will be appreciated that different types of model fixtures are used to match different types of test models. Such as: the model clamp is a rectangular clamp 241 for clamping a revolution body model 251 or an airfoil model 252; the mold clamp is an i-shaped clamp 242 to clamp the flat mold 253, and so on. The model clamps with different sizes are connected with the corresponding test models, so that when the test models with different types and sizes are carried, the corresponding model clamps are only required to be replaced.

Specifically, referring to fig. 7, 8 and 10, in performing a test of the rotor model 251 or the airfoil model 252, the rectangular jig 241 is used to be embedded in a groove on the surface of the rotor model 251 or the airfoil model 252, so that the top surface of the rectangular jig 241 is flush with the top surface of the rotor model 251 or the airfoil model 252 after the test model is firmly installed. Rectangular jig 241 and solid of revolution model 251 or airfoil model 252 are then attached together by countersunk screws. Referring to fig. 9, in performing the test of the flat panel model 253, the test measurement can be performed by simply replacing the rectangular jig 241 with the i-shaped jig 242 and connecting the i-shaped jig 242 to the lower surface of the web 230 and the upper surface of the flat panel model 253 with countersunk screws. Alternatively, the diameter of the revolution solid model 251 is 420mm or less; the chord length of the airfoil model 252 is 0.3 m-0.4 m, and the span length is 0.3 m-0.5 m; the flat model 253 has a length of 0.6m to 1m and a width of 0.3m to 0.6m.

Referring to fig. 7 and 10, in an embodiment, when the test structure is a force measuring structure 220, the force measuring structure 220 includes a force measuring component 221 and a connecting plate 222, and the force measuring component 221 connects the web 230 with the mounting structure 210 through the connecting plate 222. The number of the connecting plates 222 is two, the top of the force measuring part 221 is connected with the mounting structure 210 through the connecting plates 222, and the bottom of the force measuring part 221 is connected with the web 230 through the connecting plates 222. Alternatively, the force measuring component 221 is a force measuring balance or other force measuring enabled sensor or the like.

Referring to fig. 7, in an embodiment, the mounting structure 210 includes a fixed frame 211, a second slider 212, a stopper, and a third slider 213, where the second slider 212 and the third slider 213 are disposed at the bottom of the fixed frame 211, the second slider 212 is engaged with the square second sliding rail 147 of the central bridge measurement structure 140, the stopper is engaged with the second sliding rail 147 of the limiting tooth portion of the central bridge measurement structure 140, and the third slider 213 is engaged with the third sliding rail 148 of the central bridge measurement structure 140. The fixing frame 211 is a main body frame of the mounting structure 210, and the mounting of the test apparatus 200 to the center bridge structure 140 is achieved by the fixing frame 211. The fixed frame 211 is connected with the force measuring component 221 through the connecting plate 222, the force measuring component 221 is connected with the web 230, the web 230 is connected with the model clamp, and the model clamp is connected with the test model. After the test apparatus 200 is mounted, the first and

second slide rails

1423 and 147 are mounted to the first support beam 143 through the second and

third sliders

212 and 213.

Optionally, the mounting structure 210 further includes a first stopper 214 and a second stopper 215, where the first stopper 214 and the second stopper 215 are disposed on the fixing frame 211, and the second stopper 215 and the third stopper limit the mounting of the test device to the second sliding rail 147 and the third sliding rail 148, so as to avoid the position of the test device from shifting, and thus fix the whole test device 200 firmly. After the test device 200 is mounted on the central bridge measurement structure 140, stress conditions of different models and different speeds and different depths can be measured.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A towing tank, comprising:

a preset distance exists between the transparent pool main body and the ground;

2. The towing tank of claim 1 wherein the tank body includes a plurality of transparent tempered glass and a plurality of supporting steel structural members, the tempered glass being spliced with the supporting steel structural members to form the tank body;

the number of layers of the toughened glass is double;

3. The hauling pool of claim 1, wherein the support structure includes a first support frame and a trailer rail, the first support frame being located outside of the pool body and having the predetermined spacing from the pool body, the trailer rail being disposed on top of the first support frame and above the pool body, the trailer structure being movably disposed on the trailer rail;

4. A towing tank in accordance with claim 3 wherein said trailer structure includes a second support frame, an operating platform, a first drive assembly and a plurality of trailer wheels, a plurality of said trailer wheels being disposed at the bottom of said second support frame and being movably disposed on said trailer rail, said first drive assembly being disposed on said second support frame and being coupled to a plurality of said trailer wheels, said operating platform being disposed on said second support frame;

5. The hauling pool of claim 4, wherein the trailer structure further includes at least a first guide assembly disposed on the second support frame and moving along the trailer rail, the first guide assembly being configured to guide movement of the trailer structure;

6. The hauling pool of claim 4, wherein the trailer structure further includes a speed measurement assembly disposed at a bottom of the second support frame and abutting the trailer rail;

7. The hauling pool of any one of claims 4 to 6, wherein the central bridge structure includes a third support frame, a fourth support frame, a first support beam and a second drive assembly, the third support frame being disposed on the second support frame, the second drive assembly being disposed on the third support frame, an output end of the second drive assembly being connected to the fourth support frame for driving the fourth support frame to move up and down, the first support beam being disposed on the fourth support frame for mounting the test equipment;

8. The hauling pool of claim 7, wherein the fourth support frame includes two second support beams, two third support beams and two first slide rails, the two second support beams and the two third support beams are spliced to form a frame structure, the two first slide rails are disposed on the opposite second support beams, and the first support beams are slidably disposed on the first slide rails;

9. The hauling pool of claim 8, wherein the number of first support beams is two, wherein one of the first support beams has a second rail on top thereof and the other first support beam has a third rail on top thereof, the second rail being square or having a spacing tooth, the third rail having a spacing ramp.

10. Hydrodynamic test system, characterized by comprising test equipment and a towing tank according to any one of claims 1 to 9;

the test equipment is instrument equipment or test equipment;