Air-dropping boat model water-impact test device and test method

Abstract

The present application relates to a kind of air-boat model water impact test device and test method, belong to the technical field of air-boat.It includes control console, test tower, telescopic arm, air-boat model, seakeeping basin, wave generator and water impact test device, test tower is set on the side of seakeeping basin, the telescopic arm is provided on the test tower, the end of the telescopic arm is connected with air-boat model by water impact test device, wave generator is set on the other side of seakeeping basin.The present application can accurately simulate the actual situation of air-boat model landing water impact test, effectively observe the whole process of air-boat model water impact, and achieve the requirements of controllable test risk and low test cost;At the same time, through the combination of air-boat model's rotating device and tilting device, the water landing posture and wave direction of air-boat model are controlled in all directions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air-dropping boats, and in particular to an air-dropping boat model water-impact test device and test method. BACKGROUND

[0002] There are three major shortcomings in the anti-impact test of air-dropping boats under wave conditions: 1) the test is difficult, including test data testing and transmission difficulties; 2) the test sea area cannot give quantitative values for wave size, and it is not easy to observe the water-impact conditions of the air-dropping boat model, and the test site is limited by the influence of the natural environment; 3) the test cost is high, and the test risk and technical difficulty are great.

[0003] Therefore, it is necessary to develop an air-dropping boat model water-impact test device and test method. SUMMARY

[0004] The present application provides an air-dropping boat model water-impact test device and test method to accurately simulate the actual conditions of the air-dropping boat model landing test, effectively observe the whole process of the air-dropping boat model water-impact, and achieve the requirements of controllable test risk and low test cost.

[0005] The technical solution adopted by the present application is as follows: an air-dropping boat model water-impact test device, comprising a control operation platform, a test tower, an extension arm, an air-dropping boat model, a seakeeping pool, a wave maker, and a water-impact test device, the test tower is arranged on one side of the seakeeping pool, the extension arm is arranged on the test tower, the end of the extension arm is connected to the air-dropping boat model through the water-impact test device, and the wave maker is arranged on the other side of the seakeeping pool; the structure of the water-impact test device comprises an air-dropping boat model launching device, an air-dropping boat model launching guide device, an air-dropping boat model rotating device, and an air-dropping boat model tilting device; the air-dropping boat model launching guide device is arranged on the air-dropping boat model launching device, and the air-dropping boat model rotating device and the air-dropping boat model tilting device are respectively arranged in the launching direction of the air-dropping boat model launching guide device.

[0006] As a further improvement of the above technical solution:

[0007] Preferably, the air-boat model launching device is structured as a lifting rope drum, a lifting motor, a lifting rope and a fixed pulley; the lifting rope drum and the lifting motor are fixed in the telescopic arm and move with the telescopic arm; the lifting motor drives the lifting rope drum to rotate, the lifting rope wound on the lifting rope drum is stretched or shortened with the forward and reverse rotation of the lifting rope drum; the fixed pulley is fixedly installed on the front end of the telescopic arm and used to change the direction of the lifting rope; the lifting rope is fixedly connected to the suspension ring of the air-boat model tilting device and used to lift and launch the air-boat model.

[0008] Preferably, the air-boat model launching guide device is structured as a guide rod, a rotary supporting fixed seat, a moving clamp seat and a clamp seat mounting frame; the rotary supporting fixed seat is installed on the guide rod, the clamp seat mounting frame is arranged at the bottom of the guide rod and the moving clamp seat is assembled through the clamp seat mounting frame.

[0009] Preferably, the guide rod is structured as a guide rod and a guide rod threaded head; the guide rod is a hollow circular tube structure; the guide rod threaded head includes two solid circular rods with different diameters, one of which is inserted into the hollow circular tube of the guide rod, and the guide rod and the guide rod threaded head are integrated by welding to form a welded joint, and the other one is threaded and installed on the guide rod fixed seat of the moving clamp seat.

[0010] Preferably, the rotary supporting fixed seat is structured as a guide rod seat, a circular ring tube, a horizontal connecting straight tube and a vertical connecting straight tube; the guide rod seat is in the form of a circular truncated cone with a through hole in the middle, through which the guide rod moves up and down; the circular ring tube includes two semicircular hollow circular tubes, the two ends of which are fixedly welded with two guide rod seats, respectively, to form a circular ring as a whole; the number of the horizontal connecting straight tubes is 8, which are arranged uniformly along the circular ring in a horizontal direction, one end of each horizontal connecting straight tube is fixedly connected with the radial direction of the circular ring tube, and the other end is fixedly connected with the vertical connecting straight tube in a vertical direction, for connecting the circular ring tube; the number of the vertical connecting straight tubes is 8, which are arranged uniformly along the circular ring in a vertical direction, one end of each vertical connecting straight tube is fixedly connected with the inner ring of the inner tooth rotary supporting in a vertical direction, and the other end is fixedly connected with the horizontal connecting straight tube in a vertical direction, so that the rotary supporting fixed seat rotates with the rotation of the inner ring of the inner tooth rotary supporting.

[0011] Preferably, the structure of the moving card seat is: including card seat fixing bolt nut, guide rod fixed seat, upper card hinge, lower card hinge and card hinge shaft; the card seat fixing bolt nut is used to lock and fix when the upper card hinge and the lower card hinge are closed; the guide rod fixed seat corresponds to the guide rod seat of the rotary support fixed frame seat, the guide rod fixed seat is fixed on the upper surface of the upper card hinge, the guide rod fixed seat is provided with a threaded hole for installing the guide rod, the threaded hole and the thread of the guide rod threaded head are one-to-one corresponding, and the guide rod is installed and fixed on the moving card seat; the hinge structure formed by the upper card hinge, the lower card hinge and the card hinge shaft, the hole formed by the upper card hinge and the lower card hinge is circular arc and makes the moving card seat move along the card seat outer circular tube on the card seat mounting frame; at the position of the card hinge shaft, the shaft connecting hole formed between the upper card hinge and the lower card hinge is linear.

[0012] Preferably, the structure of the card seat mounting frame is: including card seat vertical support, card seat deck mounting plate, card seat outer circular tube, card seat inner circular tube and card seat inner and outer circular connecting tube; 4 groups of card seat vertical support and 4 groups of card seat deck mounting plate are perpendicular to the model deck of the air drop boat and are used to fix the card seat mounting frame on the deck of the air drop boat model; the card seat outer circular tube is used for fixed installation of the moving card seat; the card seat inner circular tube is uniformly fixed and installed on the card seat vertical support; 4 groups of card seat inner and outer circular connecting tubes are used to connect the card seat outer circular tube and the card seat inner circular tube together, and the 4 groups of card seat inner and outer circular connecting tubes are installed in a non-uniform symmetric form, every 2 groups of card seat inner and outer circular connecting tubes are deviated from the symmetric position by 5°-10°, so that there are two asymmetric areas on the card seat outer circular tube and the card seat inner circular tube and are used for the movement of the moving card seat along the card seat outer circular tube, so that the moving card seat is installed at the rotation limit position of 90°.

[0013] Preferably, the air-drop boat model slewing device is structured as follows: a telescopic arm connecting circular tube, a slewing reduction motor, a slewing device connecting vertical support rod, an inner tooth type slewing bearing outer ring, an inner tooth type slewing bearing rolling body, an inner tooth type slewing bearing inner ring and an external gear; the telescopic arm connecting circular tube is fixedly connected with the slewing device connecting vertical support rod, the slewing device connecting vertical support rod is fixedly connected with the inner tooth type slewing bearing outer ring, so that the air-drop boat model slewing device is fixed on the telescopic arm; the inner tooth type slewing bearing outer ring, the inner tooth type slewing bearing rolling body and the inner tooth type slewing bearing inner ring constitute an inner tooth type slewing bearing, the telescopic arm connecting circular tube, the slewing device connecting vertical support rod and the inner tooth type slewing bearing outer ring are fixedly connected with the telescopic arm; the inner tooth type slewing bearing outer ring and the inner tooth type slewing bearing inner ring are connected through the inner tooth type slewing bearing rolling body, and the inner tooth type slewing bearing outer ring and the inner tooth type slewing bearing inner ring rotate relative to each other; the slewing reduction motor is fixedly installed on the telescopic arm connecting circular tube and is fixed; an external gear is installed on the shaft of the slewing reduction motor, and the external gear is engaged with the inner teeth of the inner tooth type slewing bearing inner ring; the slewing reduction motor rotates to drive the external gear to rotate, and the inner tooth type slewing bearing inner ring is driven to rotate through the gear engagement, the inner tooth type slewing bearing inner ring rotates relative to the fixed inner tooth type slewing bearing outer ring, and the slewing bearing fixed seat, the guide rod, the movable clamp seat and the clamp seat mounting frame fixed on the inner tooth type slewing bearing inner ring are used to realize the rotation of the air-drop boat model.

[0014] Preferably, the air-drop boat model tilting device is structured as follows: a hanging sling, a tilting device structural frame and a tilting rope winding and unwinding drum; the hanging sling is used for connecting the lifting rope of the air-drop boat model launching device with the tilting device structural frame; the tilting device structural frame is structured as follows: a side plate opening, side plates, a middle plate and upper and lower plates; the side plates are four in number, the side plate openings are formed in the side plates, and the side plate openings of two of the side plates are on the upper side, and the side plate openings of the other two side plates are on the lower side; the side plate openings are used for the entry and exit of the rope and the installation of the tilting rope winding and unwinding drum; the middle plate is arranged in the middle of the side plates and is connected with the surrounding side plates, and is used for installing the upper tilting rope winding and unwinding drum; the upper and lower plates are two in number, and are fixedly connected with the four side plates at the upper and lower portions respectively; the tilting rope winding and unwinding drum is structured as follows: a tilting reduction motor, a motor support, a tilting electromagnetic clutch and shaft, a tilting winding and unwinding drum, a tilting rope and a tilting drum support; the tilting reduction motor and the tilting electromagnetic clutch and shaft are used for rotating the tilting winding and unwinding drum, the tilting rope wound on the tilting winding and unwinding drum is stretched or shortened along with the forward and reverse rotation of the tilting winding and unwinding drum; the motor support is used for supporting the tilting reduction motor and the tilting electromagnetic clutch and shaft, and the tilting drum support is used for supporting the tilting winding and unwinding drum; the upper motor support and the tilting drum support are installed on the middle plate of the tilting device structural frame, and the lower motor support and the tilting drum support are installed on the upper and lower plates of the tilting device structural frame; the tilting rope is fixedly connected with the deck of the air-drop boat model, so as to realize the longitudinal or transverse tilting of the air-drop boat model.

[0015] A test method of the air-drop boat model water impact test device is provided, and the specific steps are as follows:

[0016] The air-drop boat model is connected with the tilting rope, and the air-drop boat model launching guide device is fixedly installed;

[0017] According to the test requirements, the air-drop boat model rotating device and the air-drop boat tilting device are adjusted and controlled to meet the selection requirements of various wave directions and the selection requirements of various roll and pitch angles of the air-drop boat model in the test;

[0018] The wave generator is started to generate regular waves or random waves with wave height and wavelength meeting the test requirements in the seakeeping tank, meanwhile, the air-drop boat model launching device is started on the control operation table by the operator to launch the air-drop boat model into water, the corresponding test data of the air-drop boat model water impact is tested, and the whole process of the air-drop boat model water impact is observed.

[0019] The air-drop boat model water impact test device has the following beneficial effects:

[0020] The test device of the present invention has a reasonable structure and is easy to operate. It forms a specific overall test device structure by combining a wave-resistant water tank, a test tower, a telescopic arm, and a wave generator with the water impact test device. It can accurately simulate the actual situation of the airdrop boat model landing test, effectively observe the whole process of the airdrop boat model landing water impact, and achieve the requirements of controllable test risk and low test cost.

[0021] The present invention also has the following advantages:

[0022] This invention, through the combination of the airdrop boat model rotation device and the airdrop boat model tilting device, enables the airdrop boat model to have all-round control over its water landing position in terms of water landing attitude and wave direction. With the help of the wave generator producing regular or random waves of different wave heights and wavelengths, it can meet the usage requirements of different test conditions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall layout structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the water impact test device of the present invention.

[0025] Figure 3 This is a schematic diagram of the airdrop boat model launching device of the present invention.

[0026] Figure 4 This is a schematic diagram of the airdrop boat model deployment guide device of the present invention.

[0027] Figure 5 This is a schematic diagram of the guide rod of the present invention.

[0028] Figure 6 for Figure 5 Enlarged schematic diagram of part I in the middle.

[0029] Figure 7 This is a schematic diagram of the slewing bearing fixing frame of the present invention.

[0030] Figure 8 This is a view showing the connection between the vertically connected straight pipe and the airdrop boat model rotation device in this invention.

[0031] Figure 9 This is a schematic diagram of the structure of the movable card holder of the present invention.

[0032] Figure 10 for Figure 9 Side view.

[0033] Figure 11 This is a schematic diagram of the card holder mounting bracket of the present invention.

[0034] Figure 12 for Figure 11 Top view.

[0035] Figure 13 Structure diagram of the airdrop boat model rotating device of the present application.

[0036] Figure 14 Structure diagram of the airdrop boat model rotating device of the present application. Figure 13 Top view.

[0037] Figure 15 Structure diagram of the airdrop boat model tilting device of the present application.

[0038] Figure 16 Structure diagram of the tilting device structure frame of the present application.

[0039] Figure 17 Structure diagram of the tilting rope winding and unwinding drum of the present application.

[0040] Figure 18 Longitudinal inclination state diagram of the present application.

[0041] Figure 19 Transverse inclination state diagram of the present application.

[0042] Wherein: 1, control operation platform; 2, test tower; 3, telescopic arm; 4, airdrop boat model; 5, seakeeping tank; 6, wave generator; 100, water impact test device;

[0043] 110, airdrop boat model launching device; 120, airdrop boat model launching guide device; 130, airdrop boat model rotating device; 140, airdrop boat model tilting device;

[0044] 111, lifting rope drum; 112, lifting motor; 113, lifting rope; 114, fixed pulley;

[0045] 1210, guide rod; 1220, rotating support fixed seat; 1230, moving clamp seat; 1240, clamp seat mounting frame;

[0046] 1211, guide rod; 1212, guide rod threaded head; 1213, threaded portion; 1214, welded portion;

[0047] 1221, guide rod seat; 1222, circular tube; 1223, horizontal connection straight tube; 1224, vertical connection straight tube;

[0048] 1231, clamp seat fixed bolt; 1232, guide rod fixed seat; 1233, upper clamping hinge; 1234, lower clamping hinge; 1235, clamping hinge shaft;

[0049] 1241, clamp seat vertical support rod; 1242, clamp seat deck mounting plate; 1243, clamp seat outer circular tube; 1244, clamp seat inner circular tube; 1245, clamp seat inner and outer circular connection tube;

[0050] 131. Telescopic boom connecting ring tube; 132. Rotary geared motor; 133. Rotary device connecting vertical support rod; 134. Outer ring of internal gear slewing bearing; 135. Rolling element of internal gear slewing bearing; 136. Inner ring of internal gear slewing bearing; 137. External gear;

[0051] 141. Suspension ring; 1410. Inclined device structural frame; 1420. Inclined rope take-up and release drum;

[0052] 1411. Side panel opening; 1412. Side panel; 1413. Middle panel; 1414. Top and bottom panels;

[0053] 1421. Inclined geared motor; 1422. Motor bracket; 1423. Inclined electromagnetic clutch; 1424. Inclined take-up and release drum; 1425. Inclined rope; 1426. Inclined drum bracket. Detailed Implementation

[0054] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0055] like Figures 1-19 As shown, the airdrop boat model water impact test device of this embodiment includes a control console 1, a test tower 2, a telescopic arm 3, an airdrop boat model 4, a wave-resistant water tank 5, a wave generator 6, and a water impact test device 100. The test tower 2 is set on one side of the wave-resistant water tank 5, and the telescopic arm 3 is set on the test tower 2. The end of the telescopic arm 3 is connected to the airdrop boat model 4 through the water impact test device 100. The wave generator 6 is set on the other side of the wave-resistant water tank 5.

[0056] The structure of the water impact test device 100 in this embodiment is as follows: it includes an airdrop boat model launching device 110, an airdrop boat model launching guide device 120, an airdrop boat model rotating device 130, and an airdrop boat model tilting device 140; the airdrop boat model launching guide device 120 is provided on the airdrop boat model launching device 110, and the airdrop boat model rotating device 130 and the airdrop boat model tilting device 140 are respectively matched and provided in the launching direction of the airdrop boat model launching guide device 120.

[0057] In the embodiment, the structure of the air-drop boat model launching device 110 is: a lifting rope drum 111, a lifting motor 112, a lifting rope 113 and a fixed pulley 114; the lifting rope drum 111 and the lifting motor 112 are fixed in the telescopic arm 3 and move with the telescopic arm 3; the lifting motor 112 drives the lifting rope drum 111 to rotate, the lifting rope 113 wound on the lifting rope drum 111 is stretched or shortened with the forward and reverse rotation of the lifting rope drum 111; the fixed pulley 114 is fixedly installed on the front end of the telescopic arm 3 and is used for changing the direction of the lifting rope 113; the lifting rope 113 is fixedly connected to the suspension lifting ring 141 of the air-drop boat model tilting device 140, and the lifting rope 113 is used for lifting and launching the air-drop boat model 4. Specifically, in the embodiment, the lifting motor 112 is used to control the descending speed of the lifting rope 113 to simulate the landing process of the air-drop boat model: the air-drop boat leaves the airplane at zero speed, at this time, the parachute is not opened, the gravity is greater than the air resistance, and the falling speed increases; with the opening of the parachute, the air resistance of the parachute increases, and the landing acceleration becomes smaller; when the air resistance increases to equal the gravity, the landing acceleration is equal to zero, and the parachute falls at a constant speed;

[0058] The simulation is based on the weight mg of the air-drop boat;

[0059] The air resistance of the parachute is: ;

[0060] Wherein c is the resistance coefficient, p is the air density, s is the windward area of the parachute, and v is the falling speed, the landing height is h, the falling time t and the landing speed v of the air-drop boat are calculated, and the landing speed v must be limited within the specified speed range. Therefore, firstly, the lifting rope 113 is controlled to accelerate the descent, and when the descending speed reaches the landing speed v, the lifting rope 113 is controlled to descend at a constant speed until the air-drop boat model lands in the water.

[0061] In the embodiment, the structure of the air-drop boat model launching guide device 120 is: including a guide rod 1210, a slewing bearing fixing seat 1220, a moving clamp seat 1230 and a clamp seat mounting frame 1240; the slewing bearing fixing seat 1220 is installed on the guide rod 1210, the clamp seat mounting frame 1240 is arranged at the bottom of the guide rod 1210 and the moving clamp seat 1230 is assembled through the clamp seat mounting frame 1240.

[0062] In the embodiment, the structure of the guide rod 1210 is: including a guide rod 1211 and a guide rod threaded head 1212;

[0063] The guide rod 1211 is a hollow circular tube structure, and its length is determined according to the dropping height of the water impact test of the model of the air delivery boat. The guide rod threaded head 1212 includes two solid circular rods with different diameters, wherein the small diameter section can be inserted into the hollow circular tube of the guide rod 1211, and the guide rod 1211 and the guide rod threaded head 1212 are integrated through the welding part 1214. The large diameter section is threaded at the threaded part 1213, which can be installed on the guide rod fixing seat 1232 of the movable clamp seat 1230.

[0064] In the embodiment, the structure of the slewing bearing fixing seat 1220 includes a guide rod seat 1221, a circular ring tube 1222, a horizontal connecting straight tube 1223 and a vertical connecting straight tube 1224. The guide rod seat 1221 is in the form of a circular table seat structure, and the middle part is a through hole. The guide rod 1211 passes through the through hole to move up and down. The circular ring tube 1222 includes two semicircular hollow circular tubes, and the two ends of the two hollow circular tubes are fixedly welded with the two guide rod seats 1221 respectively, and the whole forms a circular ring. The number of the horizontal connecting straight tube 1223 is 8, which is uniformly arranged along the circular ring in a horizontal direction. One end of the horizontal connecting straight tube 1223 is fixedly connected with the radial direction of the circular ring tube 1222, and the other end of the horizontal connecting straight tube 1223 is fixedly connected with the vertical connecting straight tube 1224 in a vertical direction, which is used for connecting the circular ring tube 1222 and also can strengthen the strength and rigidity of the circular ring tube 1222. The number of the vertical connecting straight tube 1224 is 8, which is uniformly arranged along the circular ring in a vertical direction. One end of the vertical connecting straight tube 1224 is fixedly connected with the inner ring 136 of the inner tooth type slewing bearing of the model of the air delivery boat in a vertical direction, and the other end of the vertical connecting straight tube 1224 is fixedly connected with the horizontal connecting straight tube 1223 in a vertical direction, so as to realize the rotation of the slewing bearing fixing seat 1220 with the rotation of the inner ring 136 of the inner tooth type slewing bearing.

[0065] In the embodiment, the structure of the mobile bracket 1230 includes bracket fixing bolt 1231, guide rod fixing seat 1232, upper clamping hinge 1233, lower clamping hinge 1234 and clamping hinge shaft 1235. The bracket fixing bolt 1231 is used to lock and fix when the upper clamping hinge 1233 and the lower clamping hinge 1234 are closed. The guide rod fixing seat 1232 corresponds to the guide rod seat 1221 of the slewing bearing fixing seat 1220. The guide rod fixing seat 1232 is fixed on the upper surface of the upper clamping hinge 1233. Threaded holes for installing the guide rod 1210 are arranged on the guide rod fixing seat 1232. The threaded holes correspond to the threads of the guide rod threaded head 1212, and the guide rod 1210 is installed and fixed on the mobile bracket 1230. The upper clamping hinge 1233, the lower clamping hinge 1234 and the clamping hinge shaft 1235 form a hinge structure. The hole formed by closing the upper clamping hinge 1233 and the lower clamping hinge 1234 is in a circular arc shape, and the mobile bracket 1230 moves along the bracket outer circular ring pipe 1243 on the bracket mounting frame 1240. At the position of the clamping hinge shaft 1235, the shaft connection hole formed between the upper clamping hinge 1233 and the lower clamping hinge 1234 is in a straight line shape, which does not affect the opening and closing of the upper clamping hinge 1233 and the lower clamping hinge 1234.

[0066] In the embodiment, the structure of the bracket mounting frame 1240 includes bracket vertical support rod 1241, bracket deck mounting plate 1242, bracket outer circular ring pipe 1243, bracket inner circular ring pipe 1244 and bracket inner and outer circular ring connecting pipe 1245. Four groups of bracket vertical support rods 1241 and four groups of bracket deck mounting plates 1242 are arranged vertically to the deck of the air-drop boat model and are used to fix the bracket mounting frame 1240 on the deck of the air-drop boat model. The bracket outer circular ring pipe 1243 is used for fixed installation of the mobile bracket 1230. The bracket inner circular ring pipe 1244 is uniformly fixed and installed on the bracket vertical support rod 1241. Four groups of bracket inner and outer circular ring connecting pipes 1245 are used to connect the bracket outer circular ring pipe 1243 and the bracket inner circular ring pipe 1244 together. The four groups of bracket inner and outer circular ring connecting pipes 1245 are installed in a non-uniform symmetric form. Each two groups of bracket inner and outer circular ring connecting pipes 1245 deviate from the symmetric position by 5°-10°. There are two asymmetric areas on the bracket outer circular ring pipe 1243 and the bracket inner circular ring pipe 1244, which are used for the movement of the mobile bracket 1230 along the bracket outer circular ring pipe 1243. The mobile bracket 1230 is installed at the rotation limit position of 90°, and finally the air-drop boat model realizes the requirement of slewing 90° in the test process.

[0067] In the embodiment, the structure of the air-drop boat model slewing device 130 comprises a telescopic arm connecting circular pipe 131, a slewing reduction motor 132, a slewing device connecting vertical support 133, an inner tooth slewing bearing outer ring 134, an inner tooth slewing bearing rolling body 135, an inner tooth slewing bearing inner ring 136 and an external gear 137; the telescopic arm connecting circular pipe 131 is fixedly connected with the slewing device connecting vertical support 133, the slewing device connecting vertical support 133 is fixedly connected with the inner tooth slewing bearing outer ring 134, so that the air-drop boat model slewing device 130 is fixed on the telescopic arm 3; the inner tooth slewing bearing outer ring 134, the inner tooth slewing bearing rolling body 135 and the inner tooth slewing bearing inner ring 136 constitute an inner tooth slewing bearing, the telescopic arm connecting circular pipe 131, the slewing device connecting vertical support 133 and the inner tooth slewing bearing outer ring 134 are connected with and fixed on the telescopic arm 3; the inner tooth slewing bearing outer ring 134 and the inner tooth slewing bearing inner ring 136 are connected through the inner tooth slewing bearing rolling body 135, and the inner tooth slewing bearing outer ring 134 and the inner tooth slewing bearing inner ring 136 rotate relative to each other; the slewing reduction motor 132 is fixedly installed on the telescopic arm connecting circular pipe 131 and does not move; the external gear 137 is installed on the shaft of the slewing reduction motor 132, and the external gear 137 is engaged with the inner teeth of the inner tooth slewing bearing inner ring 136; the rotation of the slewing reduction motor 132 drives the rotation of the external gear 137, and the rotation of the inner tooth slewing bearing inner ring 136 is driven through the gear engagement, the inner tooth slewing bearing inner ring 136 rotates relative to the fixed inner tooth slewing bearing outer ring 134, the slewing of the air-drop boat model 4 is realized through the slewing bearing fixed seat 1220, the guide rod 1210, the movable clamping seat 1230 and the clamping seat mounting frame 1240 fixed on the inner tooth slewing bearing inner ring 136, and the selection requirement of various wave directions in the air-drop boat model test is met.

[0068] In the embodiment, the structure of the airboat model tilting device 140 comprises a hanging ring 141, a tilting device structure frame 1410, and a tilting rope winding and unwinding drum 1420. The hanging ring 141 is used to connect the lifting rope 113 of the airboat model launching device 110 and the tilting device structure frame 1410. The structure of the tilting device structure frame 1410 comprises side plate openings 1411, side plates 1412, a middle plate 1413, and upper and lower plates 1414. There are four side plates 1412, and the side plate openings 1411 are arranged on the side plates 1412. Two of the side plate openings 1411 are arranged on the upper side plates 1412, and the other two are arranged on the lower side plates 1412. The side plate openings 1411 are used for the entry and exit of the rope and the installation of the tilting rope winding and unwinding drum 1420. The middle plate 1413 is arranged in the middle of the side plates 1412 and is connected to the surrounding side plates 1412. The middle plate 1413 is used to install the upper tilting rope winding and unwinding drum 1420. There are two upper and lower plates 1414, which are fixedly connected to the four side plates 1412 at the upper and lower parts, respectively.

[0069] The structure of the tilting rope winding and unwinding drum 1420 comprises a tilting speed reducer motor 1421, a motor support 1422, a tilting electromagnetic clutch 1423, a tilting winding and unwinding drum 1424, a tilting rope 1425, and a tilting drum support 1426. The tilting speed reducer motor 1421 and the tilting electromagnetic clutch 1423 are used to rotate the tilting winding and unwinding drum 1424. The tilting rope 1425 wound on the tilting winding and unwinding drum 1424 is stretched or shortened by the forward and reverse rotation of the tilting winding and unwinding drum 1424. The motor support 1422 is used to support the tilting speed reducer motor 1421 and the tilting electromagnetic clutch 1423. The tilting drum support 1426 is used to support the tilting winding and unwinding drum 1424. The upper motor support 1422 and the tilting drum support 1426 are installed on the middle plate 1413 of the tilting device structure frame 1410. The lower motor support 1422 and the tilting drum support 1426 are installed on the upper and lower plates 1414 of the tilting device structure frame 1410. The tilting rope 1425 is fixedly connected to the deck of the airboat model, realizing the longitudinal or transverse tilting of the airboat model.

[0070] In the embodiment, the test method of the airboat model water impact test device comprises the following steps:

[0071] Connect the airboat model 4 to the tilting rope 1425 and fix the airboat model launching guide device 120.

[0072] According to the test requirements, adjust and control the airboat model rotating device 130 and the airboat model tilting device 140 to meet the selection requirements of various wave directions and various roll and pitch angles of the airboat model in the test.

[0073] The wave generator 6 is started to generate regular waves or random waves with wave height and wave length meeting the test requirements in the seakeeping basin 5, while the air-drop boat model launching device 110 is started by the operator at the control console 1 to launch the air-drop boat model 4 into the water, the corresponding test data of the water impact of the air-drop boat model 4 are tested, and the whole process of the water impact of the air-drop boat model 4 is observed.

[0074] In the embodiment, the application is based on the seakeeping basin 5 and the wave generator 6 itself, cooperates with the test tower 2, the telescopic arm 3 and the air-drop boat model 4 and adds the water impact test device 100, accurately simulates the actual situation of the air-drop boat model landing test, effectively observes the whole process of the water impact of the air-drop boat model, and meets the requirements of controllable test risk and low test cost; meanwhile, the application combines the air-drop boat model rotating device 130 and the air-drop boat model tilting device 140 to form a specific structure, so that the air-drop boat model 4 has omnidirectional water landing position control in the water landing posture and the wave direction, and the different wave height and wave length regular waves or random waves generated by the wave generator 6 can meet the use requirements of different test states.

[0075] The above description is an explanation of the application, not a limitation of the application, the scope of the application is defined in the claims, and any form of modification within the protection scope of the application can be made.

Claims

1. A water impact test device for an airdropped boat model, characterized in that: The system includes a control console (1), a test tower (2), a telescopic arm (3), an airdrop boat model (4), a wave-resistant water tank (5), a wave generator (6), and a water impact test device (100). The test tower (2) is set on one side of the wave-resistant water tank (5), and the telescopic arm (3) is set on the test tower (2). The end of the telescopic arm (3) is connected to the airdrop boat model (4) through the water impact test device (100). The wave generator (6) is set on the other side of the wave-resistant water tank (5). The structure of the water impact test device (100) is as follows: it includes an airdrop boat model launching device (110), an airdrop boat model launching guide device (120), an airdrop boat model rotating device (130), and an airdrop boat model tilting device (140); the airdrop boat model launching guide device (120) is set on the airdrop boat model launching device (110), and the airdrop boat model rotating device (130) and the airdrop boat model tilting device (140) are respectively matched in the launching direction of the airdrop boat model launching guide device (120). The structure of the airdrop boat model launching guide device (120) is as follows: it includes a guide rod (1210), a slewing bearing fixing frame (1220), a movable card seat (1230), and a card seat mounting frame (1240). The guide rod (1210) is equipped with a slewing bearing fixing bracket (1220), and a card holder mounting bracket (1240) is provided at the bottom of the guide rod (1210) and a movable card holder (1230) is assembled through the card holder mounting bracket (1240). The structure of the guide rod (1210) is as follows: it includes a guide rod (1211) and a guide rod threaded head (1212). The guide rod (1211) is a hollow circular tube structure; The guide rod thread head (1212) includes two solid round rods with different diameters. One diameter section is inserted into the hollow round tube of the guide rod (1211), and the guide rod (1211) and the guide rod thread head (1212) are welded together to form a weld (1214). Threads are machined on the other diameter section to form a threaded part (1213) and installed on the guide rod fixing seat (1232) of the movable card seat (1230).

2. The airdrop boat model water impact test device as described in claim 1, characterized in that: The structure of the airdrop boat model launching device (110) is as follows: lifting rope roller (111), lifting motor (112), lifting rope (113) and fixed pulley (114). The lifting rope roller (111) and the lifting motor (112) are fixed inside the telescopic arm (3) and move with the telescopic arm (3); The lifting motor (112) drives the lifting rope drum (111) to rotate, and the lifting rope (113) wound on the lifting rope drum (111) extends or shortens as the lifting rope drum (111) rotates forward and backward. A fixed pulley (114) is fixedly installed on the front end of the telescopic boom (3) to change the direction of the lifting rope (113); The lifting rope (113) is fixedly connected to the suspension ring (141) of the tilting device (140) of the airdrop boat model. The lifting rope (113) is used for lifting and dropping the airdrop boat model (4).

3. The airdrop boat model water impact test device as described in claim 1, characterized in that: The structure of the slewing bearing fixing frame (1220) includes a guide rod seat (1221), a circular tube (1222), a horizontal connecting straight tube (1223), and a vertical connecting straight tube (1224). The guide rod seat (1221) has a frustum-shaped structure and a through hole in the middle. The guide rod (1211) moves up and down through the through hole. The annular tube (1222) includes two semi-circular hollow tubes, the two ends of which are fixedly welded to two guide rod seats (1221) respectively, forming an annular shape as a whole; The number of horizontal connecting straight pipes (1223) is 8, which are evenly arranged horizontally along the ring. One end of the horizontal connecting straight pipe (1223) is radially fixedly connected to the ring pipe (1222), and the other end of the horizontal connecting straight pipe (1223) is vertically fixedly connected to the vertical connecting straight pipe (1224) for connecting the ring pipe (1222). The number of vertical connecting straight pipes (1224) is 8, and they are evenly arranged vertically along the ring. One end of the vertical connecting straight pipe (1224) is vertically fixedly connected to the inner ring (136) of the internal tooth type slewing bearing of the airdrop boat model slewing device (130), and the other end of the vertical connecting straight pipe (1224) is vertically fixedly connected to the horizontal connecting straight pipe (1223), so that the slewing bearing fixing frame (1220) rotates with the rotation of the inner ring (136) of the internal tooth type slewing bearing.

4. The airdrop boat model water impact test device as described in claim 1, characterized in that: The structure of the movable card holder (1230) includes a card holder fixing bolt (1231), a guide rod fixing seat (1232), an upper card hinge (1233), a lower card hinge (1234), and a card hinge shaft (1235). The mounting bolt (1231) is used to lock and fix the upper hinge (1233) and the lower hinge (1234) when they are closed; The guide rod fixing seat (1232) corresponds one-to-one with the guide rod seat (1221) of the slewing bearing fixing frame seat (1220). The guide rod fixing seat (1232) is fixed on the upper surface of the upper hinge (1233). The guide rod fixing seat (1232) is provided with a threaded hole for installing the guide rod (1210). The threaded hole corresponds one-to-one with the thread of the guide rod thread head (1212), so that the guide rod (1210) is installed and fixed on the movable bracket (1230). The hinge structure formed by the upper hinge (1233), lower hinge (1234) and hinge shaft (1235) is an integral part of the hinge structure. The hole formed by the upper hinge (1233) and lower hinge (1234) when they are closed is arc-shaped, and the movable card seat (1230) moves along the outer ring tube (1243) of the card seat on the card seat mounting frame (1240). At the hinge shaft (1235) position, the shaft connection hole formed between the upper hinge (1233) and the lower hinge (1234) is in a straight line.

5. The water impact test device for the airdropped boat model as described in claim 1, characterized in that: The structure of the card holder mounting bracket (1240) includes a card holder vertical support rod (1241), a card holder deck mounting plate (1242), a card holder outer ring tube (1243), a card holder inner ring tube (1244), and a card holder inner and outer ring connecting tube (1245). Four sets of vertical support rods (1241) and four sets of deck mounting plates (1242) are arranged perpendicular to the deck of the airdrop boat model and are used to fix the mounting bracket (1240) to the deck of the airdrop boat model. The outer annular tube (1243) of the card holder is used for the fixed installation of the movable card holder (1230); The inner annular tube (1244) of the card holder is evenly fixed on the vertical support rod (1241) of the card holder; Four sets of inner and outer ring connecting pipes (1245) are used to connect the outer ring pipe (1243) and the inner ring pipe (1244) of the card holder together. The four sets of inner and outer ring connecting pipes (1245) are installed in a non-uniform symmetrical form. Each pair of inner and outer ring connecting pipes (1245) deviates from the symmetrical position by 5° to 10°, so that there are two asymmetrical areas on the outer ring pipe (1243) and the inner ring pipe (1244) of the card holder. These areas are used to move the card holder (1230) along the outer ring pipe (1243) of the card holder, so that the moving card holder (1230) is installed at the 90° rotation limit position.

6. The airdrop boat model water impact test device as described in claim 1, characterized in that: The structure of the airdrop boat model slewing device (130) is as follows: it includes a telescopic arm connecting ring tube (131), a slewing reduction motor (132), a slewing device connecting vertical support rod (133), an inner tooth slewing bearing outer ring (134), an inner tooth slewing bearing rolling element (135), an inner tooth slewing bearing inner ring (136), and an external gear (137). The telescopic arm connecting ring tube (131) is fixedly connected to the slewing device connecting vertical support rod (133), and the slewing device connecting vertical support rod (133) is fixedly connected to the inner tooth slewing bearing outer ring (134), so that the airdrop boat model slewing device (130) is fixed on the telescopic arm (3). The inner tooth slewing bearing consists of an outer ring (134), an inner tooth slewing bearing rolling element (135), and an inner ring (136). The inner tooth slewing bearing is connected to a circular tube (131) via a telescopic arm. The slewing device is connected to a vertical support rod (133) and the outer ring (134) of the inner tooth slewing bearing is connected to and fixed to the telescopic arm (3). The outer ring (134) and the inner ring (136) of the internal gear slewing bearing are connected by the rolling elements (135) of the internal gear slewing bearing, and the outer ring (134) and the inner ring (136) of the internal gear slewing bearing rotate relative to each other. The rotary gear motor (132) is fixedly installed on the connecting ring tube (131) of the telescopic arm and remains stationary; an external gear (137) is installed on the shaft of the rotary gear motor (132), and the external gear (137) meshes with the internal teeth of the inner ring (136) of the internal gear slewing bearing; The rotation of the rotary gear motor (132) drives the rotation of the external gear (137), which in turn drives the inner ring (136) of the internal gear slewing bearing to rotate through gear meshing. The inner ring (136) of the internal gear slewing bearing rotates relative to the fixed outer ring (134) of the internal gear slewing bearing. The rotation of the airdrop boat model (4) is achieved through the slewing bearing fixing bracket (1220), guide rod (1210), movable bracket (1230) and bracket mounting bracket (1240) fixed on the inner ring (136) of the internal gear slewing bearing.

7. The airdrop boat model water impact test device as described in claim 1, characterized in that: The structure of the airdrop boat model tilting device (140) is as follows: it includes a suspension ring (141), a tilting device structural frame (1410), and a tilting rope take-up and release roller (1420); the suspension ring (141) is used to connect the lifting rope (113) of the airdrop boat model launching device (110) to the tilting device structural frame (1410); The structure of the tilting device frame (1410) is as follows: it includes side plate openings (1411), side plates (1412), a middle plate (1413), and upper and lower plates (1414); there are 4 side plates (1412), and the side plate openings (1411) are opened on the side plates (1412), with the side plate openings (1411) of 2 of the side plates (1412) on the upper side and the side plate openings (1411) of the other 2 side plates (1412) on the lower side. The side plate opening (1411) is used for the entry and exit of the rope and the installation of the inclined rope take-up and release roller (1420); the middle plate (1413) is in the middle of the side plate (1412) and connects to the side plates (1412) around it. The middle plate (1413) is used to install the upper inclined rope take-up and release roller (1420); there are two upper and lower plates (1414). The two upper and lower plates (1414) are fixedly connected to the four side plates (1412) at the upper and lower parts respectively. The structure of the inclined rope take-up and release roller (1420) is as follows: it includes an inclined geared motor (1421), a motor bracket (1422), an inclined electromagnetic clutch (1423), an inclined take-up and release roller (1424), an inclined rope (1425), and an inclined roller bracket (1426); the inclined geared motor (1421) and the inclined electromagnetic clutch (1423) are used to rotate the inclined take-up and release roller (1424), and the inclined rope (1425) wound on the inclined take-up and release roller (1424) is extended or shortened as the inclined take-up and release roller (1424) rotates forward and backward; the motor bracket (1421) and the inclined electromagnetic clutch (1423) are used to rotate the inclined take-up and release roller (1424); the inclined rope (1425 ... inclined rope (1425) is extended or shortened as the inclined take-up and release roller (1424) rotates forward and backward; the inclined rope (1425) is extended or shortened as the inclined take-up and release roller (1424) rotates forward and backward; the inclined rope (1425) is extended or shortened as the inclined take-up and release roller (1424) rotates forward and backward; the inclined rope (1425) is extended or shortened as the inclined take-up and release roller (1425) rotates forward and backward; the inclined rope (1425) is extended or shortened as the inclined take-up and release roller (1425) rotates forward and backward; the inclined rope (1425) is 2) The tilting geared motor (1421) and the tilting electromagnetic clutch (1423) are used to support the tilting geared motor (1421) and the tilting electromagnetic clutch (1423). The tilting roller bracket (1426) is used to support the tilting take-up and take-down roller (1424). The upper motor bracket (1422) and the tilting roller bracket (1426) are installed on the middle plate (1413) of the tilting device structural frame (1410), and the lower motor bracket (1422) and the tilting roller bracket (1426) are installed on the upper and lower plates (1414) of the tilting device structural frame (1410). The tilting rope (1425) is fixedly connected to the deck of the airdrop boat model to realize the longitudinal or lateral tilting of the airdrop boat model.

8. A test method for a water impact test device for an airdropped boat model, characterized in that: The method for conducting tests using the water impact test apparatus for the airdropped boat model as described in claim 7 specifically includes the following steps: Connect the airdrop boat model (4) to the inclined rope (1425) and fix the airdrop boat model release guide device (120) in place. According to the test requirements, the airdrop boat model rotation device (130) and airdrop boat model tilting device (140) are adjusted and controlled to meet the selection requirements of various wave directions and various heel and pitch angles of the airdrop boat model in the test. Turn on the wave generator (6) to generate regular or random waves with the required wave height and wavelength in the wave-resistant pool (5). At the same time, the operator starts the airdrop boat model launching device (110) on the control panel (1) to launch the airdrop boat model (4) into the water, tests the corresponding test data of the airdrop boat model (4) landing on the water, and observes the whole process of the airdrop boat model (4) landing on the water.

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