CN115326357A - Device for measuring impact water-entering characteristic of test body and underwater characteristic of flexible air bag - Google Patents
Device for measuring impact water-entering characteristic of test body and underwater characteristic of flexible air bag Download PDFInfo
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- CN115326357A CN115326357A CN202211264044.6A CN202211264044A CN115326357A CN 115326357 A CN115326357 A CN 115326357A CN 202211264044 A CN202211264044 A CN 202211264044A CN 115326357 A CN115326357 A CN 115326357A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a device for measuring the impact water-entering characteristic of a test body and the underwater characteristic of a flexible air bag, which comprises a main body frame, wherein the main body frame is provided with an impact water-entering test device and an underwater characteristic measuring device. The impact water-entry test device comprises a first organic glass barrel, a first supporting beam, a coiler, a limiting fixing cross frame, an ejection device, a test body, a dividing gauge, a first limiting steel cable, a second limiting steel cable, a first steel cable buckle, a first bottom hanging ring, a second steel cable buckle, a second bottom hanging ring and a first drain valve, and the problem that the initial condition of the test body under impact water-entry cannot be accurately controlled is solved. The underwater characteristic measuring device comprises a second organic glass barrel, a second supporting beam, a steering pulley, a zero-buoyancy cable, a liquid level sensor, a stay wire displacement sensor, a flexible air bag, a pressure gauge, a tension meter and a second drain valve, and the problem that the size of the elastic air bag under water and the size change of the generated buoyancy cannot be continuously observed and measured is solved.
Description
Technical Field
The invention belongs to the technical field of test of measuring the impact water-entering characteristic of a test body and measuring and testing the underwater characteristic condition of a flexible air bag in real time, and particularly relates to a measuring device for the impact water-entering characteristic of the test body and the underwater characteristic of the flexible air bag.
Background
At present, need use jettison device when carrying out test body impact entry test, especially when having strict demand to test body impact entry initial operating mode condition, test body impact entry test device's user demand can promote along with experimental repetition number's increase, and test device's inaccuracy can cause huge influence to test body impact entry initial condition and follow-up result. When the underwater characteristic condition of the flexible air bag is researched, the difficulty and the workload of the air bag modeling analysis are huge directly, and the air bag compression conditions under different actual water depths cannot be accurately obtained.
Therefore, how to solve the problems of test body impact water under accurate working conditions and continuous real-time measurement of underwater characteristics of the flexible air bag in the prior art becomes a technical key to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to: the invention provides a device for measuring the impact water-entering characteristic of a test body and the underwater characteristic of a flexible air bag, which solves the problems of inaccuracy and great difficulty of the existing test. When the impact water-entering characteristic of the test body is measured, the test body is adjusted and controlled in the initial working condition through the dividing gauge and the ejection device. When the underwater characteristic research of the flexible air bag is carried out, the compression condition of the air bag is intuitively measured by means of the volume change of the discharged water, and the air bag is prevented from being directly modeled and analyzed.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a test body strikes measuring device of characteristic and flexible gasbag characteristic under water, includes main body frame, is equipped with on the main body frame and strikes test device and characteristic measuring device under water into water.
The main body frame comprises a safe climbing frame, a first fixed frame and a second fixed frame, the safe climbing frame is respectively and fixedly connected with the first fixed frame and the second fixed frame, the impact water inlet test device is fixed on the second fixed frame, and the underwater characteristic measuring device is fixed on the first fixed frame. The fixing frames respectively ensure the stability of the underwater real-time characteristic measuring device of the flexible air bag and the underwater impact characteristic testing device of the test body.
The impact water inlet test device comprises a first organic glass barrel, a first supporting beam, a coiler, a limiting fixing cross frame, an ejection device, a test body, a dividing gauge, a first limiting steel cable, a second limiting steel cable, a first steel cable buckle, a first bottom hanging ring, a second steel cable buckle, a second bottom hanging ring and a first drain valve.
First supporting beam fixes at the top of climbing the frame safely, and first supporting beam is located the top of first organic glass bucket, is connected with vertical arrangement's spacing cable wire between the bottom of first supporting beam and first organic glass bucket, wears to be equipped with spacing fixed crossbearer on the spacing cable wire, and first drain valve is used for experimental liquid in the emptying devices of being convenient for after accomplishing.
The limiting steel cable comprises a first limiting steel cable and a second limiting steel cable, the limiting fixing cross frame is arranged on the first limiting steel cable and the second limiting steel cable in a penetrating mode, a first bottom hanging ring and a second bottom hanging ring are arranged in the first organic glass barrel, the first limiting steel cable is connected with the first bottom hanging ring through a first steel cable buckle, and the second limiting steel cable is connected with the second bottom hanging ring through a second steel cable buckle.
Be equipped with lift drive between first supporting beam and the spacing fixed crossbearer, lift drive is the coiler, and the main part of coiler is fixed on first supporting beam, and the roll-up rope and the spacing fixed crossbearer of coiler are connected.
The limiting fixed cross frame is provided with a hinged ejection device, the ejection device is provided with a test body, and a dividing gauge is arranged between the limiting fixed cross frame and the ejection device. The ejection device comprises an ejection box, a sliding track with a downward opening is arranged in the ejection box, the test body is arranged in the sliding track, and a spring is arranged between the test body and the ejection box. The graduated scale comprises scales and a pointer, the scales are arranged on the first supporting beam, the pointer is connected with a rotating shaft of the ejection device, the scales and the pointer are coaxial, and the direction of the pointer is the same as the ejection direction of the test body.
The coiler, the spacing fixed cross frame and the spacing steel cable are used for controlling the height of the ejection device, the test body and the dividing gauge in the vertical direction, namely the height position from the liquid level, so that the requirements of different tests can be met conveniently. The limiting fixed transverse frame is connected with the dividing gauge, the dividing gauge and the pointer are coaxial, and the pointer is fixedly connected with the ejection box so as to set the current angular position of the test body. The spring is filled in the ejection device, and according to the law of conservation of energy:
different initial velocities of the test body can be obtained by controlling the amount of elongation of the spring.
The underwater characteristic measuring device comprises a second organic glass barrel, a second supporting beam, a first steering pulley, a second steering pulley, a zero-buoyancy cable, a liquid level sensor, a stay wire displacement sensor, a flexible air bag, a pressure gauge, a tension meter, a third steering pulley, a third pulley seat, a fourth steering pulley, a fourth pulley seat and a second drain valve.
The second supporting beam is fixed at the top of the safe climbing frame and is located above the second organic glass barrel, an upper pulley assembly is arranged on the second supporting beam, a lower pulley assembly is arranged at the bottom of the second organic glass barrel, a zero-buoyancy cable bypasses the upper pulley assembly and is connected with the flexible air bag after bypassing the lower pulley assembly, a liquid level sensor is arranged on the first supporting beam, a stay wire displacement sensor is arranged, a tension meter is connected between the zero-buoyancy cable and the flexible air bag, and a pressure gauge is arranged on the flexible air bag.
The upper pulley assembly comprises a first steering pulley and a second steering pulley, the lower pulley assembly comprises a third steering pulley and a fourth steering pulley, and the zero-buoyancy cable is connected with the flexible airbag after sequentially passing around the first steering pulley, the second steering pulley, the third steering pulley and the fourth steering pulley. The bottom of the second organic glass barrel is provided with a third pulley seat and a fourth pulley seat, a third steering pulley is arranged on the third pulley seat, and a fourth steering pulley is arranged on the fourth pulley seat.
Stay wire displacement sensor links firmly with zero buoyancy cable, and zero buoyancy cable connects the tensiometer through turning to the assembly pulley to link firmly with flexible gasbag, can realize the degree of depth change continuous control to flexible gasbag in flexible gasbag characteristic real-time measurement device under water, according to the balance of power:
in the formula (I), the compound is shown in the specification,F floating body Is a flexible air bag for discharging waterV Row board So that the buoyancy generated by the buoyancy generator,Gis the total gravity of the air bag, the pressure gauge and the like,F meter Is the tensile gauge reading.
The tension meter is used for obtaining the stress condition of the flexible air bag in a balanced state at a certain depth position and theoretically calculating the current volume conditionV Row board 。
The depth change can cause the water pressure change, and the expansion or the compression caused by the pressure influence can cause the displacement volume in the process of moving under the flexible air bagV Row board The pressure gauge can measure the air pressure in the flexible air bagP Pressure gauge The stay wire displacement sensor can measure the displacement delta of the zero-buoyancy cablex Stay wire I.e. the amount of change delta in the depth of the flexible airbagh Air bag . Liquid level change delta measured by ultrasonic liquid level sensor in organic glass barrelh Liquid level The volume change Δ of the flexible airbag can be obtainedVAccording to an ideal gas state equation:
it is possible to obtain:
in the formula (I), the compound is shown in the specification,Dis the inner diameter of the organic glass barrel,h 0 is the initial depth of the air bag,P i for the depth of the air bagh i The internal gas pressure thereof.
Except the flexible air bag, other materials are regarded as rigid bodies, and do not deform under the water pressure, and only the volume of the flexible air bag changes along with the depth. Can also mutually verify from the theoretical and practical test level
，
The test procedure can be checked for errors.
The main body frame is provided with a high-speed camera device which can lift and slide. The high-speed camera device comprises a first synchronous wheel, a synchronous belt, a fixing bolt, a high-speed camera and a second synchronous wheel. The high-speed camera is arranged on the movable platform, the movable platform is vertically arranged on the main body frame in a sliding mode, the movable platform is connected with the synchronous belt, the synchronous belt is wound between the first synchronous wheel and the second synchronous wheel, the first synchronous wheel is arranged at the bottom of the main body frame, and the second fixed wheel is arranged at the top of the main body frame.
The high-speed camera is installed on the movable platform, the synchronizing wheel and the synchronizing wheel drive the movable platform to move when rotating, the ascending or descending of the platform is controlled through the forward and reverse rotation of the synchronizing wheel, and the height of the high-speed camera can be adjusted according to conditions so as to record the complete experimental process.
Preferably, main body frame includes safe frame, the fixed frame of climbing, is equipped with step ladder, bogie etc. on the safe frame of climbing, and the fixed frame is equipped with fixed spreader and stand.
Preferably, the test body strikes testing arrangement that entries includes bucket, supporting beam and the fixed main body frame thereof, and sets up the coiler, spacing fixed crossbearer, spacing cable wire, jettison device, graduated scale, drain valve etc. at the supporting beam lower extreme, the coiler can control spacing fixed crossbearer and follow spacing cable wire and remove in vertical direction, and spacing cable wire runs through spacing fixed crossbearer, and it is fixed through the cable clip to walk around bottom link, and the graduated scale is fixed on spacing fixed crossbearer, and jettison device can carry out work at arbitrary angle, thereby will the test body is followed arbitrary initial angle and speed transmission.
Preferably, the dividing gauge is fixedly installed on the limiting fixing cross frame, and the surface of the limiting fixing cross frame is provided with divisions.
Preferably, the test body sliding track on the ejection box is spherical, the pointer is fixedly installed in parallel with the track direction and can rotate along with the rotation of the ejection box, and the pointer and the graduated gauge are coaxially installed and obtain an accurate angle position when the direction of the ejection box is adjusted.
Preferably, a supporting column is arranged below the belly of the test body, the bottom of the column body is spherical and tangent to the ejection box track, and a round table which is subjected to smoothing treatment is arranged in the middle of the column body and supported on the outer surface of the ejection box so as to ensure that the test body does not tilt forwards or backwards on the ejection box sliding track.
Preferably, the flexible airbag underwater characteristic real-time measuring device comprises a barrel, a supporting beam, a steering pulley block, a zero-buoyancy cable, an ultrasonic liquid level sensor, a stay wire displacement sensor, a flexible airbag, a pressure gauge, a tension meter, a drain valve and the like. The steering pulley block is respectively and fixedly arranged at the positions of the supporting beam, the bottom of the barrel and the like, and the control operation of the depth position of the air bag is simpler by changing the direction of the force through the pulley block.
Preferably, the barrel, the ultrasonic liquid level sensor, the stay wire displacement sensor and the like convert the real-time underwater position and volume change condition of the flexible air bag into a sensor which can be measured, and the method is simple, convenient and visual.
Preferably, the elastic air bag is spherical, so that the mechanical characteristics of the elastic air bag can be analyzed conveniently.
Preferably, one end of the movable platform penetrates through the upright post of the main body frame, the other end of the movable platform is fixed on the synchronous belt and can move up and down along with the transmission of the step wheel and the synchronous belt, and the high-speed camera is fixed on the movable platform to record the real-time test condition.
According to the technical scheme provided by the invention, the test device for testing the impact of the test body into water comprises a first organic glass barrel, a first supporting beam, a retractor, a limiting fixing cross frame, an ejection device, the test body, an index gauge, a limiting steel cable, a steel cable buckle, a bottom hanging ring and a first drain valve. First quick-witted glass bucket sets up in the fixed frame of main body frame's second for hold the used liquid of experiment, first supporting beam fixed mounting is at the top of safe climbing frame, be used for fixing spacing cable wire, coiler and spacing fixed crossbearer, spacing cable wire one end is fixed on the supporting beam, run through spacing fixed crossbearer, and the bottom link is walked around, it is fixed that the end passes through cable wire buckle lock, coiler one end is fixed on first supporting beam, spacing fixed crossbearer is connected to the other end, the fixed crossbearer of coiler steerable limit drawing moves in vertical direction along spacing cable wire, the graduated scale is fixed on spacing fixed crossbearer, jettison can work at arbitrary angle, thereby launch from arbitrary initial angle and speed with the test body. So set up, solved initial position, angle, the difficult problem of controlling of speed among the current water experiment process of strikeing, it is more simple effective to repeat many times test process.
According to the technical scheme, the device for measuring the underwater characteristic of the flexible airbag in real time comprises a second organic glass barrel, a second supporting beam, a steering pulley block, a zero-buoyancy cable, an ultrasonic liquid level sensor, a stay wire displacement sensor, the flexible airbag, a pressure gauge, a tension gauge, a second drain valve and the like, wherein the second supporting beam is fixedly installed at the top of a safe climbing frame, one end of the zero-buoyancy cable is connected with a retractor, the middle of the zero-buoyancy cable is connected with the tension gauge by bypassing a steering pulley arranged on the second supporting beam and the steering pulley at the bottom of the barrel, the tail end of the zero-buoyancy cable is connected with the flexible airbag, the pulley block is used for changing the direction of force, the zero-buoyancy cable can drive the depth of the flexible airbag to change, and no additional buoyancy influence is generated, the ultrasonic liquid level sensor is used for monitoring the height change of the liquid level in the barrel, namely, the change of the volume of the flexible airbag is converted into the volume change of the flexible airbag, the pressure gauge is used for measuring the air pressure in the flexible airbag. So set up, solved the problem of the difficult continuous measurement gasbag characteristic in the current flexible gasbag underwater characteristic test equipment to and gasbag degree of depth accommodation process is unstable, the inefficiency.
According to the technical scheme provided by the invention, the high-speed camera is partially carried on the main body frame and comprises a synchronizing wheel, a synchronizing belt, a fixing bolt, a high-speed camera and a movable platform. The stand that main body frame was run through to movable platform one side, and the opposite side passes through fixing bolt and hold-in range fixed connection, and the synchronizing wheel rotates and to drive movable platform and reciprocate when driving synchronous belt drive, and high-speed camera installs on movable platform. The arrangement enables the high-speed camera to record the situation in the whole test process.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand various combinations according to the prior art and the common general knowledge after understanding the solution of the present invention, and the combinations are all the technical solutions to be protected by the present invention, and are not exhaustive here.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the main body frame of the present invention.
FIG. 3 is a schematic view of the structure of the device for testing water penetration impact of the present invention.
Fig. 4 is a schematic view of the structure of the first support beam of the present invention.
Fig. 5 is a structural sectional view of the first support beam and the ejector of the present invention.
Fig. 6 is a schematic view of the structure of the underwater characteristic measuring device of the present invention.
Fig. 7 is a schematic structural diagram of the high-speed image pickup apparatus of the present invention.
In the figure: 1-main body frame, 101-safe climbing frame, 102-first fixed frame, 103-second fixed frame; 2-impact water-entering test device, 201-first organic glass barrel, 202-first supporting beam, 203-retractor, 204-limiting fixed cross frame, 205-ejection device, 206-test body, 207-graduated scale, 208-first limiting steel cable, 209-second limiting steel cable, 210-first steel cable buckle, 211-first bottom suspension loop, 212-second steel cable buckle, 213-second bottom suspension loop, 214-first drain valve, 251-ejection box, 252-pointer, 253-spring; 3-underwater characteristic measuring device, 301-second organic glass barrel, 302-second supporting beam, 303-first steering pulley, 304-second steering pulley, 305-zero buoyancy cable, 306-liquid level sensor, 307-stay wire displacement sensor, 308-flexible air bag, 309-pressure gauge, 310-tension meter, 311-third steering pulley, 312-third pulley seat, 313-fourth steering pulley, 314-fourth pulley seat and 315-second drain valve; 4-high speed camera device, 401-first synchronous wheel, 402-synchronous belt, 403-fixed bolt, 404-high speed camera, 405-second synchronous wheel, 406-movable platform.
Detailed Description
The purpose of this embodiment is to provide a composite test device, solve among the prior art initial position, angle, the difficult problem of speed control among the impact income water experimentation to and difficult continuous measurement gasbag characteristic, the unstable, the inefficiency of gasbag degree of depth adjustment process among the flexible gasbag underwater characteristic test equipment problem.
The following non-limiting examples serve to illustrate the invention.
Example 1:
referring to fig. 1, the device for measuring the impact water-entering characteristic of a test body and the underwater characteristic of a flexible airbag comprises a main body frame 1, an impact water-entering test device 2, an underwater characteristic measuring device 3 and a high-speed camera device 4.
Referring to fig. 2, the main body frame 1 includes a safety climbing frame 101, a first fixing frame 102 and a second fixing frame 103, the safety climbing frame 101 is fixedly connected to the first fixing frame 102 and the second fixing frame 103, respectively, the impact penetration test device 2 is fixed to the second fixing frame 103, and the underwater characteristic measurement device 3 is fixed to the first fixing frame 102.
Referring to fig. 3, the impact water penetration test device 2 includes a first organic glass barrel 201, a first supporting beam 202, a retractor 203, a limiting fixing cross frame 204, an ejection device 205, a test body 206, an index gauge 207, a first limiting steel cable 208, a second limiting steel cable 209, a first steel cable buckle 210, a first bottom suspension loop 211, a second steel cable buckle 212, a second bottom suspension loop 213 and a first drain valve 214.
The first supporting beam 202 is fixed on the safety climbing frame 101, and the first supporting beam 202 is located above the first organic glass barrel 201. Be connected with vertical layout's spacing cable wire between the bottom of first supporting beam 202 and first organic glass bucket 201, spacing cable wire includes first spacing cable wire 208 and the spacing cable wire 209 of second, spacing fixed crossbearer 204 is worn to establish on first spacing cable wire 208 and the spacing cable wire 209 of second, be equipped with first bottom link 211 and second bottom link 213 in the first organic glass bucket 201, first spacing cable wire 208 is connected with first bottom link 211 through first steel cable clip 210, the spacing cable wire 209 of second is connected with second bottom link 213 through second steel cable clip 212.
Referring to fig. 4, a lifting driving device is arranged between the first supporting beam 202 and the limit fixing beam 204, the lifting driving device is a retractor 203, a main body of the retractor 203 is fixed on the first supporting beam 202, and a retraction rope of the retractor 203 is connected with the limit fixing beam 204.
Referring to fig. 5, the limit fixing cross frame 204 is provided with a hinged ejection device 205, and the ejection device 205 is provided with a test body 206. The ejection device 205 comprises an ejection box 251 and a spring 253, wherein a sliding track with a downward opening is arranged in the ejection box 251, the test body 206 is arranged in the sliding track, and the spring 253 is arranged between the test body 206 and the ejection box 251. The upper part of the ejection box 251 is provided with a sliding track with a spherical section, and the bottom of a supporting upright post below the abdomen of the test body 206 is provided with a ball which is jointed with the spherical guide rail and is contacted with a spring 253.
A graduated gauge 207 is arranged between the limiting fixing transverse frame 204 and the ejection device 205, the graduated gauge 207 comprises scales and a pointer 252, the scales are arranged on the first supporting beam 202, the pointer 252 is connected with a rotating shaft of the ejection device 205, the scales and the pointer 252 are coaxial, and the direction of the pointer 252 is the same as the ejection direction of the test object 206. The direction of the pointer 252 is consistent with the direction of the spherical guide rail of the ejection box 251, and the pointer and the ejection box 251 are axially fixed and integrally present.
Referring to fig. 6, the underwater characteristic measuring device 3 includes a second plexiglass tub 301, a second support beam 302, a first diverting pulley 303, a second diverting pulley 304, a zero-buoyancy cable 305, a liquid level sensor 306, a pull wire displacement sensor 307, a flexible air bag 308, a pressure gauge 309, a tension gauge 310, a third diverting pulley 311, a third pulley holder 312, a fourth diverting pulley 313, a fourth pulley holder 314, and a second drain valve 315.
The second supporting beam 302 is fixed on the safety climbing frame 101, and the second supporting beam 302 is located above the second organic glass barrel 301. The second supporting beam 302 is provided with a first diverting pulley 303 and a second diverting pulley 304 as upper pulley components, and the bottom of the second organic glass barrel 301 is provided with a third diverting pulley 311 and a fourth diverting pulley 313 as lower pulley components.
One end of the zero-buoyancy cable 305 is connected with the retractor 203, and the zero-buoyancy cable 305 is connected with the flexible airbag 308 after passing through the first diverting pulley 303, the second diverting pulley 304, the third diverting pulley 311 and the fourth diverting pulley 313 in sequence. The bottom of the second organic glass barrel 301 is provided with a third pulley seat 312 and a fourth pulley seat 314, the third diverting pulley 311 is arranged on the third pulley seat 312, and the fourth diverting pulley 313 is arranged on the fourth pulley seat 314.
An ultrasonic liquid level sensor 306 and a stay wire displacement sensor 307 are arranged on the second supporting beam 302, a tension meter 310 is connected between the zero-buoyancy cable 305 and the flexible air bag 308, and a pressure gauge 309 is arranged on an exhaust port of the flexible air bag 308.
Referring to fig. 7, the high-speed camera 4 that is moved up and down includes a first timing wheel 401, a timing belt 402, a fixing bolt 403, a high-speed camera 404, and a second timing wheel 405. The high-speed camera 404 is fixed on the movable platform 406, the movable platform 406 is vertically arranged on the main body frame 1 in a sliding mode, the fixing bolt 403 of the movable platform 406 is connected with the synchronous belt 402, the synchronous belt 402 is wound between the first synchronous wheel 401 and the second synchronous wheel 405, the first synchronous wheel 401 is arranged at the bottom of the main body frame 1, and the second synchronous wheel 405 is arranged at the top of the main body frame 1.
The specific use method comprises the following steps:
as shown in fig. 3, the height of the limit fixing cross frame, the angle of the ejection device, the compression amount of the spring and the relative position of the pointer and the guide rail are adjusted, so that the test body is in an ejectable test state with a known initial state.
As shown in fig. 6, the flexible airbag gradually submerges or floats by adjusting the retractable zero-buoyancy cable, and corresponding data are measured by a pressure gauge, a pull wire displacement sensor, an ultrasonic liquid level sensor and the like, so as to obtain the characteristics of the flexible airbag at a certain depth position, and the characteristics of the flexible airbag are not limited to a single airbag, but also can be characteristic tests of a combined airbag.
As shown in fig. 7, the movable platform drives the high-speed camera to move in the height direction by adjusting the synchronous wheel and the synchronous belt, so as to capture the complete test state.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be arbitrarily combined with any other basic example and selection example.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a test body strikes measuring device of characteristic and flexible gasbag characteristic under water, includes main body frame (1), its characterized in that: the main body frame (1) is provided with an impact water inlet test device (2) and an underwater characteristic measuring device (3);
the impact water-entering test device (2) comprises a first organic glass barrel (201) and a first supporting beam (202), the first supporting beam (202) fixedly installed is located above the first organic glass barrel (201), a vertically-arranged limiting steel cable is connected between the first supporting beam (202) and the bottom of the first organic glass barrel (201), a limiting fixing cross frame (204) penetrates through the limiting steel cable, a lifting driving device is arranged between the first supporting beam (202) and the limiting fixing cross frame (204), a hinged ejection device (205) is arranged on the limiting fixing cross frame (204), a test body (206) is arranged on the ejection device (205), and a dividing gauge (207) is arranged between the limiting fixing cross frame (204) and the ejection device (205);
underwater characteristic measuring device (3) comprises a second organic glass barrel (301) and a second supporting beam (302), the second supporting beam (302) of the fixed installation is located above the second organic glass barrel (301), a top pulley assembly is arranged on the second supporting beam (302), a lower pulley assembly is arranged at the bottom of the second organic glass barrel (301), a zero-buoyancy cable (305) bypasses the top pulley assembly, the lower pulley assembly is connected with a flexible air bag (308), a liquid level sensor (306) is arranged on the second supporting beam (302), a stay wire displacement sensor (307), a tension meter (310) is connected between the zero-buoyancy cable (305) and the flexible air bag (308), and a pressure gauge (309) is arranged on the flexible air bag (308).
2. The apparatus for measuring the underwater characteristics of the test body and the flexible airbag after the test body impacts into the water according to claim 1, wherein: the main body frame (1) comprises a safe climbing frame (101), the safe climbing frame (101) is fixedly connected with a first fixed frame (102) and a second fixed frame (103) respectively, the impact water inlet test device (2) is fixed on the second fixed frame (103), and the underwater characteristic measuring device (3) is fixed on the first fixed frame (102).
3. The device for measuring the underwater characteristics of the test body and the flexible air bag under the water after impact according to claim 1, wherein: the lifting driving device is a retractor (203), the main body of the retractor (203) is fixed on the first supporting cross beam (202), and a retraction rope of the retractor (203) is connected with the limiting fixing cross frame (204).
4. The device for measuring the underwater characteristics of the test body and the flexible air bag under the water after impact according to claim 1, wherein: the ejection device (205) comprises an ejection box (251), a sliding track with a downward opening is arranged in the ejection box (251), the test body (206) is arranged in the sliding track, and a spring (253) is arranged between the test body (206) and the ejection box (251).
5. The device for measuring the underwater characteristics of the test body and the flexible air bag under the water after impact according to claim 1 or 4, wherein: the indexing gauge (207) comprises scales and a pointer (252), the scales are arranged on the first supporting beam (202), the pointer (252) is connected with a rotating shaft of the ejection device (205), the scales and the pointer (252) are coaxial, and the direction of the pointer (252) is the same as the ejection direction of the test body (206).
6. The device for measuring the underwater characteristics of the test body and the flexible air bag under the water after impact according to claim 1, wherein: spacing cable wire include first spacing cable wire (208) and second spacing cable wire (209), on first spacing cable wire (208) and second spacing cable wire (209) were worn to establish in spacing fixed crossbearer (204), be equipped with first bottom link (211) and second bottom link (213) in first organic glass bucket (201), first spacing cable wire (208) are connected with first bottom link (211) through first steel cable buckle (210), second spacing cable wire (209) are connected with second bottom link (213) through second steel cable buckle (212).
7. The device for measuring the underwater characteristics of the test body and the flexible air bag under the water after impact according to claim 1, wherein: the upper pulley assembly comprises a first diverting pulley (303) and a second diverting pulley (304), the lower pulley assembly comprises a third diverting pulley (311) and a fourth diverting pulley (313), and the zero-buoyancy cable (305) sequentially bypasses the first diverting pulley (303), the second diverting pulley (304), the third diverting pulley (311) and the fourth diverting pulley (313) and then is connected with the flexible airbag (308).
8. The apparatus for measuring the underwater characteristics of the test body under impact and the flexible air bag according to claim 7, wherein: the bottom of the second organic glass barrel (301) is provided with a third pulley seat (312) and a fourth pulley seat (314), a third steering pulley (311) is arranged on the third pulley seat (312), and a fourth steering pulley (313) is arranged on the fourth pulley seat (314).
9. The device for measuring the underwater characteristics of the test body and the flexible air bag under the water after impact according to claim 1, wherein: the main body frame (1) is provided with a high-speed camera device (4) which can move up and down and slide.
10. The apparatus for measuring the underwater characteristics of the test body under impact and the flexible airbag according to claim 9, wherein: high-speed camera device (4) include high-speed camera (404) and movable platform (406), high-speed camera (404) are established on movable platform (406), vertical slip is established on movable platform (406) on main body frame (1), movable platform (406) are connected with hold-in range (402), hold-in range (402) are around establishing between first synchronizing wheel (401) and second synchronizing wheel (405), the bottom in main body frame (1) is established in first synchronizing wheel (401), the top in main body frame (1) is established in second synchronizing wheel (405).
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