Airdrop boat model dampening impact test device and test method

Abstract

The invention relates to an airdrop boat model dampening impact test device and test method, and belongs to the technical field of airdrop boats. The device comprises a control operation table, a test tower, a telescopic arm, an airdrop boat model, a seakeeping pool, a wave maker and a dampening impact test device, the test tower is arranged on one side of the seakeeping pool, the telescopic arm is arranged on the test tower, the tail end of the telescopic arm is connected with the airdrop boat model through the dampening impact test device, and the airdrop boat model is connected with the wave maker. And a wave maker is arranged on the other side of the seakeeping pool. According to the invention, the actual condition of the landing dampening test of the airdrop boat model can be accurately simulated, the whole dampening process of the airdrop boat model can be effectively observed, and the requirements of controllable test risk and low test cost can be met; and meanwhile, the landing posture and the head wave direction of the airdrop boat model are controlled in all directions through the combination of the rotating device and the tilting device of the airdrop boat model.

Description

Technical Field

[0001] The invention relates to the technical field of airdrop boats, in particular to a water impact test device and a test method for an airdrop boat model. Background Art

[0002] There are three major disadvantages of using an aircraft (fixed-wing aircraft or helicopter) to carry an airdrop boat and land it on the water to conduct impact resistance tests under wave conditions: first, the test is difficult, including the test and transmission of test data; second, it is impossible to give a quantitative value for the wave size in the test sea area, and it is not easy to observe the landing conditions of the airdrop boat. The test site is greatly affected by the natural environment; third, the test cost is high, and the test risk and technical difficulty are great.

[0003] Therefore, it is necessary for the society to develop a water impact test device and a test method for an airdrop boat model. Summary of the invention

[0004] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides an airdrop boat model water impact test device and test method, so as to accurately simulate the actual conditions of the airdrop boat model landing test, effectively observe the whole process of the airdrop boat model water impact, and achieve the requirements of controllable test risks and low test costs.

[0005] The technical scheme adopted by the present invention is as follows: an airdrop boat model water impact test device, comprising a control console, a test tower, a telescopic arm, an airdrop boat model, a wave-resistant water pool, a wave maker and a water impact test device, wherein the test tower is arranged on one side of the wave-resistant water pool, the test tower is arranged with a telescopic arm, the end of the telescopic arm is connected with the airdrop boat model through the water impact test device, and the wave maker is arranged on the other side of the wave-resistant water pool; the structure of the water impact test device is as follows: comprising an airdrop boat model launching device, an airdrop boat model launching guide device, an airdrop boat model rotating device and an airdrop boat model tilting device; an airdrop boat model launching guide device is arranged on the airdrop boat model launching device, and an airdrop boat model rotating device and an airdrop boat model tilting device are respectively matched and arranged in the launching direction of the airdrop boat model launching guide device.

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

[0007] Preferably, the structure of the airdrop boat model launching device is: 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, and the lifting rope wound on the lifting rope drum realizes the extension or shortening of the lifting rope as the lifting rope drum rotates forward and reversely; the fixed pulley is fixedly mounted on the front end of the telescopic arm, and is used to change the direction of the lifting rope; the lifting rope is fixedly connected to the hanging ring of the airdrop boat model tilting device, and the lifting rope is used for lifting and launching the airdrop boat model.

[0008] Preferably, the structure of the airdrop boat model launching guide device is: including a guide rod, a slewing bearing fixed frame, a movable card seat and a card seat mounting frame; the guide rod is equipped with a slewing bearing fixed frame, a card seat mounting frame is arranged at the bottom of the guide rod and the movable card seat is assembled through the card seat mounting frame.

[0009] Preferably, the structure of the guide rod is: including 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 sections of solid circular rods with different diameters, one of the diameter sections is inserted into the hollow circular tube of the guide rod, and the guide rod and the guide rod threaded head are integrated into one by welding to form a welding point, and threads are machined on the other diameter section to form a threaded point and installed on the guide rod fixing seat of the movable clamping base.

[0010] Preferably, the structure of the slewing bearing fixed frame seat is: it includes a guide rod seat, a circular ring tube, a horizontal connecting straight tube and a vertical connecting straight tube; the guide rod seat is a truncated table seat structure with a through hole in the middle, and the guide rod passes through the through hole and moves up and down; the circular ring tube includes two semi-circular hollow circular tubes, and the two ends of the two hollow circular tubes are respectively fixedly welded to the two guide rod seats to form a circular ring shape as a whole; the number of the horizontal connecting straight tubes is 8, which are evenly arranged horizontally along the circular ring, one end of the horizontal connecting straight tube is fixedly connected to the radial direction of the circular ring tube, and the other end of the horizontal connecting straight tube is vertically fixedly connected to the vertical connecting straight tube for connecting the circular ring tube; the number of the vertical connecting straight tubes is 8, and they are evenly arranged vertically along the circular ring, one end of the vertical connecting straight tube is vertically fixedly connected to the inner ring of the internal gear slewing bearing of the airdrop boat model slewing device, and the other end of the vertical connecting straight tube is vertically fixedly connected to the horizontal connecting straight tube, so that the slewing bearing fixed frame seat rotates with the rotation of the inner ring of the internal gear slewing bearing.

[0011] Preferably, the structure of the movable base is: it includes a base fixing bolt and nut, a guide rod fixing base, an upper locking hinge, a lower locking hinge and a hinge shaft; the base fixing bolt and nut are used to lock and fix the upper locking hinge and the lower locking hinge when they are tightened; the guide rod fixing base corresponds one-to-one with the guide rod seat of the slewing bearing fixing frame seat, and the guide rod fixing base is fixed on the upper surface of the upper locking hinge, and a threaded hole for installing the guide rod is provided on the guide rod fixing base, and the threaded hole corresponds one-to-one with the thread of the guide rod thread head, and the guide rod is installed and fixed on the movable base; the hinge structure formed by the upper locking hinge, the lower locking hinge and the hinge shaft as a whole, the hole formed by the upper locking hinge and the lower locking hinge is in an arc shape, and the movable base moves along the base outer circular ring tube on the base mounting frame; at the position of the hinge shaft, the shaft connecting hole formed between the upper locking hinge and the lower locking hinge is in a straight line.

[0012] Preferably, the structure of the card seat mounting frame is: including a card seat vertical support rod, a card seat deck mounting plate, a card seat outer circular ring tube, a card seat inner circular ring tube and a card seat inner and outer circular ring connecting tube; 4 groups of card seat vertical support rods and 4 groups of card seat deck mounting plates are arranged perpendicular to the deck of the airdrop boat model and are used to fix the card seat mounting frame on the deck of the airdrop boat model; the card seat outer circular ring tube is used for fixed installation of the mobile card seat; the card seat inner circular ring tube is evenly fixedly installed on the card seat vertical support rod; 4 groups of card seat inner and outer circular ring connecting tubes are used to connect the card seat outer circular ring tube with the card seat inner circular ring tube together, and the 4 groups of card seat inner and outer circular ring connecting tubes are installed in a non-uniform symmetrical form, and every 2 groups of card seat inner and outer circular ring connecting tubes deviate from the symmetrical position by 5° to 10°, so that there are two asymmetric areas on the card seat outer circular ring tube and the card seat inner circular ring tube and are used to move the mobile card seat along the card seat outer circular ring tube, so that the mobile card seat is installed at the 90° rotation limit position.

[0013] Preferably, the structure of the airdrop boat model slewing device is as follows: it includes a telescopic arm connecting annular tube, a slewing reduction motor, a slewing device connected to a vertical support rod, an inner gear slewing bearing outer ring, an inner gear slewing bearing rolling body, an inner gear slewing bearing inner ring and an outer gear; the telescopic arm connecting annular tube and the slewing device connected to the vertical support rod are fixedly connected, and the slewing device connected to the vertical support rod and the inner gear slewing bearing outer ring are fixedly connected, so that the airdrop boat model slewing device is fixed on the telescopic arm; the inner gear slewing bearing outer ring, the inner gear slewing bearing rolling body and the inner gear slewing bearing inner ring constitute an inner gear slewing bearing, which is connected to the annular tube through the telescopic arm, and the slewing device connected to the vertical support rod and the inner gear slewing bearing outer ring are connected and fixed to the telescopic arm; the inner gear slewing bearing outer ring, the inner gear slewing bearing rolling body and the inner gear slewing bearing inner ring are connected to the telescopic arm and fixed; The outer ring of the slewing bearing and the inner ring of the internal gear slewing bearing are connected through the rolling body of the internal gear slewing bearing, and the outer ring of the internal gear slewing bearing and the inner ring of the internal gear slewing bearing rotate relative to each other; the slewing reduction motor is fixedly installed on the telescopic arm connecting circular ring tube and is immovable; the outer gear is installed on the shaft of the slewing reduction motor, and the outer gear is meshed with the inner teeth of the inner ring of the internal gear slewing bearing; the rotation of the slewing reduction motor drives the rotation of the outer gear, and then drives the inner ring of the internal gear slewing bearing to rotate through the gear meshing mode, and the inner ring of the internal gear slewing bearing rotates relative to the fixed outer ring of the internal gear slewing bearing, and the rotation of the airdrop boat model is realized by the slewing bearing fixed frame seat, guide rod, movable clamping seat and clamping seat mounting frame fixed on the inner ring of the internal gear slewing bearing.

[0014] Preferably, the structure of the airdrop boat model tilting device is as follows: it includes a hanging ring, a tilting device structural frame and a tilting rope retracting drum; the hanging ring is used to connect the lifting rope of the airdrop boat model launching device with the tilting device structural frame; the structure of the tilting device structural frame is as follows: it includes side panel openings, side panels, middle panels and upper and lower panels; there are 4 side panels, and the side panel openings are arranged on the side panels, and the side panel openings of 2 side panels are at the top, and the side panel openings of the other 2 side panels are at the bottom; the side panel openings are used for the entry and exit of ropes and the installation of the tilting rope retracting drum; the middle panel is in the middle of the side panels and connects the side panels around, and the middle panel is used for installing the upper tilting rope retracting drum; there are 2 upper and lower panels, and the 2 upper and lower panels are fixedly connected to the 4 side panels at the top and bottom respectively; the tilting rope retracting drum The structure of the drum is as follows: it includes a tilting reduction motor, a motor bracket, a tilting electromagnetic clutch and a shaft, a tilting retractable drum, a tilting rope and a tilting drum bracket; the tilting reduction motor, the tilting electromagnetic clutch and the shaft are used to rotate the tilting retractable drum, and the tilting rope wound on the tilting retractable drum realizes the extension or shortening of the tilting rope as the tilting retractable drum rotates forward and reversely; the motor bracket is used to support the tilting reduction motor, the tilting electromagnetic clutch and the shaft, and the tilting drum bracket is used to support the tilting retractable drum; the upper motor bracket and the tilting drum bracket are installed on the middle plate of the tilting device structural frame, and the lower motor bracket and the tilting drum bracket are installed on the upper and lower plates of the tilting device structural frame; the tilting rope is fixedly connected to the deck of the airdrop boat model to realize the longitudinal or lateral tilt of the airdrop boat model.

[0015] A test method for an airdrop boat model water impact test device, the specific steps are as follows:

[0016] Connect the airdrop boat model to the inclined rope and securely install the airdrop boat model delivery guide device;

[0017] According to the test requirements, the airdrop boat model rotation device and the airdrop boat tilting device are adjusted and controlled to meet the airdrop boat model's selection requirements for various wave directions and various heel and pitch angles in the test;

[0018] Turn on the wave maker to generate regular waves or random waves with wave height and wavelength that meet the test requirements in the wave-resistant water pool. At the same time, the operator starts the airdrop boat model launching device on the control console to launch the airdrop boat model into the water, tests the corresponding test data of the airdrop boat model hitting the water, and observes the whole process of the airdrop boat model hitting the water.

[0019] The beneficial effects of the present invention are as follows:

[0020] The test device of the present invention has a reasonable structure and is easy to operate. The wave-resistant water pool, the test tower, the telescopic arm, the wave maker and the water impact test device form a specific overall test device structure, which can accurately simulate the actual conditions of the airdrop boat model landing test, effectively observe the whole process of the airdrop boat model water impact, and meet the requirements of controllable test risks and low test costs.

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

[0022] The present invention enables the airdrop boat model to have all-round landing position control in terms of landing posture and wave-facing direction through the cooperation of the airdrop boat model rotating device and the airdrop boat model tilting device. Assisted by the different wave heights and wavelengths of regular waves or random waves generated by the wave maker, the use requirements of different test states can be met. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0026] Figure 4 The figure is a schematic diagram of the structure of the airdrop boat model launching guide device of the present invention.

[0027] Figure 5 It is a schematic structural 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 It is a structural schematic diagram of the slewing support fixing bracket of the present invention.

[0030] Figure 8 This is a diagram showing the coordination of the vertically connected straight pipe and the airdrop boat model rotating device in the present invention.

[0031] Fig. 9 It is a structural schematic diagram of the mobile card holder of the present invention.

[0032] Fig.10 for Fig. 9 Side view of.

[0033] Fig.11 It is a structural schematic diagram of the card holder mounting frame of the present invention.

[0034] Fig.12 for Fig.11 Top view of the .

[0035] Fig.13 It is a structural schematic diagram of the airdrop boat model rotating device of the present invention.

[0036] Fig.14 for Fig.13 Top view of the .

[0037] Fig.15 It is a structural schematic diagram of the airdrop boat tilting device of the present invention.

[0038] Fig.16 It is a schematic structural diagram of the structural frame of the tilting device of the present invention.

[0039] Fig.17 It is a schematic structural diagram of the inclined rope taking-up and unwinding drum of the present invention.

[0040] Fig.18 It is a schematic diagram of the longitudinal tilt state of the present invention.

[0041] Fig.19 It is a schematic diagram of the heeling state of the present invention.

[0042] Among them: 1. Control console; 2. Test tower; 3. Telescopic arm; 4. Airdrop boat model; 5. Wave-resistant pool; 6. Wave maker; 100. Water impact test device;

[0043] 110. Airdrop boat model launching device; 120. Airdrop boat model launching guiding 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, slewing bearing fixed frame; 1230, movable card seat; 1240, card seat mounting frame;

[0046] 1211, guide rod; 1212, guide rod thread head; 1213, threaded part; 1214, welding part;

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

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

[0049] 1241, vertical support rod of the card seat; 1242, mounting plate of the card seat deck; 1243, outer ring tube of the card seat; 1244, inner ring tube of the card seat; 1245, inner and outer ring connecting tubes of the card seat;

[0050] 131. Telescopic arm connected to circular tube; 132. Rotary reduction motor; 133. Rotary device connected to vertical support rod; 134. Internal gear slewing bearing outer ring; 135. Internal gear slewing bearing rolling element; 136. Internal gear slewing bearing inner ring; 137. External gear;

[0051] 141. Suspension ring; 1410. Structural frame of tilting device; 1420. Tilt rope retracting drum;

[0052] 1411, side panel opening; 1412, side panel; 1413, middle panel; 1414, upper and lower panels;

[0053] 1421. Reduction motor for tilting; 1422. Motor bracket; 1423. Electromagnetic clutch for tilting; 1424. Tilt retractable drum; 1425. Tilt rope; 1426. Tilt drum bracket. DETAILED DESCRIPTION

[0054] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0055] like Figures 1 to 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 pool 5, a wave maker 6 and a water impact test device 100. The test tower 2 is arranged on one side of the wave-resistant pool 5, and the telescopic arm 3 is arranged 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, and the wave maker 6 is arranged on the other side of the wave-resistant pool 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 arranged 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 arranged in the launching direction of the airdrop boat model launching guide device 120.

[0057] In this embodiment, the structure of the airdrop 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, and the lifting rope 113 wound on the lifting rope drum 111 realizes the extension or shortening of the lifting rope 113 as the lifting rope drum 111 rotates forward and reverse; the fixed pulley 114 is fixedly installed at the front end of the telescopic arm 3, and is used to change the direction of the lifting rope 113; the lifting rope 113 is fixedly connected to the hanging ring 141 of the airdrop boat model tilting device 140, and the lifting rope 113 is used for lifting and launching the airdrop boat model 4. Specifically, in this embodiment, the lifting motor 112 is used to control the descending speed of the lifting rope 113 to simulate the landing process of the airdrop boat model: the airdrop boat leaves the aircraft at zero speed, the parachute is not opened at this time, the gravity is greater than the air resistance, the falling is accelerated, and the landing speed increases; as the parachute opens, the air resistance of the parachute increases, and the landing acceleration decreases; 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 airdrop boat;

[0059] Air resistance of a parachute: f = 1 / 2×c×ρ×s×v 2 ;

[0060] Where c is the drag coefficient, ρ is the air density, s is the windward area of ​​the parachute, v is the falling speed), the landing height is h, and the airdrop boat falling time t and the falling speed v are calculated, and this falling speed v must be limited to the specified speed range. Therefore, the lifting rope 113 is first controlled to accelerate the descent, and when the descent speed reaches the falling speed v, it is then uniformly descended until the airdrop boat model lands on the water.

[0061] In this embodiment, the structure of the airdrop boat model launching guide device 120 is: including a guide rod 1210, a slewing bearing fixed frame 1220, a movable card seat 1230 and a card seat mounting frame 1240; the guide rod 1210 is equipped with a slewing bearing fixed frame 1220, and a card seat mounting frame 1240 is set at the bottom of the guide rod 1210 and the movable card seat 1230 is assembled through the card seat mounting frame 1240.

[0062] In this embodiment, the structure of the guide rod 1210 is: including a guide rod 1211 and a guide rod threaded head 1212; the guide rod 1211 is a hollow circular tube structure, and the length is determined according to the launch height of the airdrop boat model water impact test; the guide rod threaded head 1212 includes two sections of 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 1214, and the thread 1213 is processed on the large diameter section, which can be installed on the guide rod fixing seat 1232 of the movable holder 1230.

[0063] In this embodiment, the structure of the slewing bearing fixed frame seat 1220 is as follows: it 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 a truncated pedestal seat structure with a through hole in the middle, and the guide rod 1211 moves up and down through the through hole; the circular ring tube 1222 includes two semi-circular hollow circular tubes, and the two ends of the two hollow circular tubes are respectively fixedly welded to the two guide rod seats 1221, forming a circular ring shape as a whole; the number of horizontal connecting straight tubes 1223 is 8, which are evenly arranged horizontally along the circular ring, and one end of the horizontal connecting straight tube 1223 is connected to the diameter of the circular ring tube 1222. The other end of the horizontal connecting straight pipe 1223 is vertically fixedly connected to the vertical connecting straight pipe 1224, which is used to connect the circular ring pipe 1222 and can also strengthen the strength and rigidity of the circular ring pipe 1222; the number of vertical connecting straight pipes 1224 is 8, and they are evenly arranged vertically along the circular ring, one end of the vertical connecting straight pipe 1224 is vertically fixedly connected to the inner ring 136 of the internal gear 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 fixed frame 1220 rotates with the rotation of the inner ring 136 of the internal gear slewing bearing.

[0064] In this embodiment, the structure of the movable card seat 1230 is: including a card seat fixing bolt and nut 1231, a guide rod fixing seat 1232, an upper hinge 1233, a lower hinge 1234 and a hinge shaft 1235; the card seat fixing bolt and nut 1231 is used to lock and fix the upper hinge 1233 and the lower hinge 1234 when they are tightened; the guide rod fixing seat 1232 corresponds to the guide rod seat 1221 of the slewing bearing fixing frame seat 1220 one by one, the guide rod fixing seat 1232 is fixed on the upper surface of the upper hinge 1233, and the guide rod fixing seat 1232 is provided with a threaded hole for installing the guide rod 1210, and the threaded hole The threads correspond one to one with the guide rod threaded head 1212, and the guide rod 1210 is installed and fixed on the movable card seat 1230; the upper card hinge 1233, the lower card hinge 1234 and the card hinge shaft 1235 form a hinge structure as a whole, and the hole formed by the upper card hinge 1233 and the lower card hinge 1234 are arc-shaped, and the movable card seat 1230 is moved along the card seat outer ring tube 1243 on the card seat mounting frame 1240; at the position of the card hinge shaft 1235, the shaft connecting hole formed between the upper card hinge 1233 and the lower card hinge 1234 is linear, which will not affect the opening and closing of the upper card hinge 1233 and the lower card hinge 1234.

[0065] In this embodiment, the structure of the card base mounting frame 1240 is as follows: it includes a card base vertical support rod 1241, a card base deck mounting plate 1242, a card base outer circular ring tube 1243, a card base inner circular ring tube 1244 and a card base inner and outer circular connecting tube 1245; 4 groups of card base vertical support rods 1241 and 4 groups of card base deck mounting plates 1242 are arranged perpendicular to the deck of the airdrop boat model and are used to fix the card base mounting frame 1240 on the deck of the airdrop boat model; the card base outer circular ring tube 1243 is used for the fixed installation of the mobile card base 1230; the card base inner circular ring tube 1244 is evenly fixedly installed on the card base vertical support rod 1241; the 4 groups of card base inner and outer The circular connecting tube 1245 is used to connect the outer circular connecting tube 1243 of the base with the inner circular connecting tube 1244 of the base, and the four groups of the inner and outer circular connecting tubes 1245 of the base are installed in a non-uniform symmetric form. Every two groups of the inner and outer circular connecting tubes 1245 of the base deviate from the symmetrical position by 5° to 10°, so that there are two asymmetric areas on the outer circular connecting tube 1243 of the base and the inner circular connecting tube 1244 of the base and are used to move the mobile base 1230 along the outer circular connecting tube 1243 of the base, so that the mobile base 1230 is installed at the rotation limit position of 90°, and finally the airdrop boat model can achieve the requirement of rotating within a range of 90° during the test.

[0066] In this embodiment, the structure of the airdrop boat model slewing device 130 is as follows: it includes a telescopic arm connecting annular tube 131, a slewing reduction motor 132, a slewing device connecting vertical support rod 133, an inner gear slewing bearing outer ring 134, an inner gear slewing bearing rolling body 135, an inner gear slewing bearing inner ring 136 and an outer gear 137; the telescopic arm connecting annular tube 131 and the slewing device connecting vertical support rod 133 are fixedly connected, and the slewing device connecting vertical support rod 133 and the inner gear slewing bearing rolling body 135 are fixedly connected. The slewing bearing outer ring 134 is fixedly connected, so that the airdrop boat model slewing device 130 is fixed on the telescopic arm 3; the inner gear slewing bearing outer ring 134, the inner gear slewing bearing rolling body 135 and the inner gear slewing bearing inner ring 136 constitute an inner gear slewing bearing, which is connected to the annular tube 131 through the telescopic arm, and the slewing device is connected to the vertical support rod 133 and the inner gear slewing bearing outer ring 134 and is connected and fixed to the telescopic arm 3; the inner gear slewing bearing outer ring 134 ... inner ring 136. The inner ring 136 of the rotary bearing is connected through the inner gear rotary bearing rolling body 135, and the inner gear rotary bearing outer ring 134 and the inner gear rotary bearing inner ring 136 rotate relative to each other; the rotary reduction motor 132 is fixedly mounted on the telescopic arm connecting annular tube 131 and is immovable; the outer gear 137 is installed on the shaft of the rotary reduction motor 132, and the outer gear 137 is meshed with the inner teeth of the inner gear rotary bearing inner ring 136; the rotation of the rotary reduction motor 132 drives the outer gear 1 37 rotates, and then drives the inner ring 136 of the internal gear slewing bearing to rotate through the gear meshing mode. The inner ring 136 of the internal gear slewing bearing rotates relative to the fixed inner ring 134 of the internal gear slewing bearing. The rotation of the airdrop boat model 4 is realized by the slewing bearing fixed frame seat 1220, the guide rod 1210, the movable clamping seat 1230 and the clamping seat mounting frame 1240 fixed on the inner ring 136 of the internal gear slewing bearing, so as to meet the selection requirements of various wave directions in the airdrop boat model test.

[0067] In this embodiment, the structure of the airdrop boat model tilting device 140 is as follows: it includes a hanging ring 141, a tilting device structural frame 1410 and a tilting rope retracting drum 1420; the hanging ring 141 is used to connect the lifting rope 113 of the airdrop boat model launching device 110 with the tilting device structural frame 1410; the structure of the tilting device structural frame 1410 is as follows: it includes a side panel opening 1411, a side panel 1412, a middle panel 1413 and an upper and lower panel 1414; the side panel 1412 has 4 pieces, and the side panel opening 1411 is opened on the side panel 1412, and the side plate openings 1411 of two of the side plates 1412 are on the top, and the side plate openings 1411 of the other two side plates 1412 are on the bottom; the side plate openings 1411 are used for the entry and exit of ropes and the installation of the inclined rope taking-up and releasing drum 1420; the middle plate 1413 is in the middle of the side plates 1412 and connects the side plates 1412 on all sides, and the middle plate 1413 is used for installing the upper inclined rope taking-up and releasing drum 1420; there are two upper and lower plates 1414, and the two upper and lower plates 1414 are fixedly connected to the four side plates 1412 at the top and bottom respectively;

[0068] The structure of the tilting rope retracting drum 1420 is as follows: it includes a tilting reduction motor 1421, a motor bracket 1422, a tilting electromagnetic clutch and a shaft 1423, a tilting retracting drum 1424, a tilting rope 1425 and a tilting drum bracket 1426; the tilting reduction motor 1421 and the tilting electromagnetic clutch and the shaft 1423 are used to rotate the tilting retracting drum 1424, and the tilting rope 1425 wound on the tilting retracting drum 1424 is extended or shortened as the tilting retracting drum 1424 rotates forward and backward; the motor bracket 1422 Used to support the tilting reduction motor 1421 and the tilting electromagnetic clutch and shaft 1423, the tilting roller bracket 1426 is used to support the tilting retracting 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 tilt of the airdrop boat model.

[0069] In this embodiment, the test method of the airdrop boat model water impact test device of this embodiment specifically includes the following steps:

[0070] Connect the airdrop boat model 4 to the inclined rope 1425, and fix the airdrop boat model delivery guide device 120;

[0071] According to the test requirements, the airdrop boat model rotation device 130 and the airdrop boat 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;

[0072] The wave maker 5 is turned on to generate regular waves or random waves with wave height and wavelength that meet the test requirements in the wave resistance pool 4. At the same time, the operator starts the airdrop boat model launching device 110 on the control console 1 to launch the airdrop boat model 4 into the water, tests the test data corresponding to the impact of the airdrop boat model 4 hitting the water, and observes the whole process of the airdrop boat model 4 hitting the water.

[0073] In this embodiment, the present invention is based on the wave-resistant pool 5 and the wave maker 6 itself, and cooperates with the setting of the test tower 2, the telescopic arm 3 and the airdrop boat model 4 and the additional water impact test device 100, so as to accurately simulate the actual conditions of the airdrop boat model landing test, effectively observe the whole process of the airdrop boat model water impact, and meet the requirements of controllable test risks and low test costs; at the same time, the present invention forms a specific structure by combining the airdrop boat model rotating device 130 and the airdrop boat model tilting device 140, so that the airdrop boat model 4 has all-round water position control in terms of water posture and wave direction, and with the help of different wave heights, regular waves or random waves generated by the wave maker, it can meet the use requirements of different test states.

[0074] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A water impact test device for an airdrop boat model, characterized in that: The invention comprises a control console (1), a test tower (2), a telescopic arm (3), an airdrop boat model (4), a wave-resistant pool (5), a wave maker (6) and a water impact test device (100); the test tower (2) is arranged on one side of the wave-resistant pool (5); the telescopic arm (3) is arranged 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); and the wave maker (6) is arranged on the other side of the wave-resistant pool (5); The structure of the water impact test device (100) is as follows: it comprises 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 arranged 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 arranged in the launching direction of the airdrop boat model launching guide device (120).

2. The airdrop boat model water impact test device according to claim 1, characterized in that: The structure of the airdrop boat model launching device (110) comprises 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, and the lifting rope (113) wound on the lifting rope drum (111) is extended or shortened as the lifting rope drum (111) rotates forward or reversely; A fixed pulley (114) is fixedly mounted on the front end of the telescopic arm (3) and is used to change the direction of the lifting rope (113); The lifting rope (113) is fixedly connected to the suspension ring (141) of the airdrop boat model tilting device (140), and the lifting rope (113) is used for lifting and dropping the airdrop boat model (4).

3. The airdrop model water impact test device according to claim 1, characterized in that: The structure of the airdrop boat model launching guide device (120) comprises a guide rod (1210), a slewing bearing fixing frame (1220), a movable clamping seat (1230) and a clamping seat mounting frame (1240); The guide rod (1210) is provided with a slewing bearing fixing frame (1220), a card holder mounting frame (1240) is arranged at the bottom of the guide rod (1210), and the movable card holder (1230) is assembled through the card holder mounting frame (1240).

4. The airdrop model water impact test device according to claim 3, characterized in that: The structure of the guide rod (1210) is as follows: comprising a guide rod (1211) and a guide rod thread head (1212); The guide rod (1211) is a hollow circular tube structure; The guide rod threaded head (1212) comprises two sections of solid round rods with different diameters. One of the diameter sections is inserted into the hollow round tube of the guide rod (1211), and the guide rod (1211) and the guide rod threaded head (1212) are integrated by welding to form a welding point (1214). The other diameter section is threaded to form a threaded point (1213) and is installed on the guide rod fixing seat (1232) of the movable clamping seat (1230).

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

6. The airdrop model water impact test device according to claim 3, characterized in that: The structure of the movable clamping seat (1230) is as follows: it comprises a clamping seat fixing bolt and nut (1231), a guide rod fixing seat (1232), an upper clamping hinge (1233), a lower clamping hinge (1234) and a clamping hinge shaft (1235); The seat fixing bolt and nut (1231) are used to lock and fix the upper locking hinge (1233) and the lower locking 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); a threaded hole for mounting the guide rod (1210) is provided on the guide rod fixing seat (1232); the threaded hole corresponds one-to-one with the thread of the guide rod thread head (1212), and the guide rod (1210) is mounted and fixed on the movable clamping seat (1230); The hinge structure is formed by the upper latching hinge (1233), the lower latching hinge (1234) and the latching hinge shaft (1235). The hole formed by the upper latching hinge (1233) and the lower latching hinge (1234) is in an arc shape and enables the movable latching seat (1230) to move along the latching seat outer circular ring tube (1243) on the latching seat mounting frame (1240); at the position of the latching hinge shaft (1235), the shaft connection hole formed between the upper latching hinge (1233) and the lower latching hinge (1234) is in a straight line shape.

7. The airdrop model water impact test device according to claim 3, characterized in that: The structure of the card seat mounting frame (1240) is as follows: it includes a card seat vertical support rod (1241), a card seat deck mounting plate (1242), a card seat outer circular ring tube (1243), a card seat inner circular ring tube (1244) and a card seat inner and outer circular ring connecting tube (1245); Four groups of card seat vertical support rods (1241) and four groups of card seat deck mounting plates (1242) are arranged perpendicular to the deck of the airdrop boat model and are used to fix the card seat mounting frame (1240) on the deck of the airdrop boat model; The outer circular ring tube (1243) of the card seat is used for fixing and installing the movable card seat (1230); The inner annular tube (1244) of the card base is evenly fixedly mounted on the vertical support rod (1241) of the card base; The four groups of card base inner and outer circular connecting tubes (1245) are used to connect the card base outer circular connecting tube (1243) and the card base inner circular connecting tube (1244) together, and the four groups of card base inner and outer circular connecting tubes (1245) are installed in a non-uniform symmetric form, and every two groups of card base inner and outer circular connecting tubes (1245) deviate from the symmetric position by 5° to 10°, so that two asymmetric areas exist on the card base outer circular connecting tube (1243) and the card base inner circular connecting tube (1244) and are used to move the mobile card base (1230) along the card base outer circular connecting tube (1243), so that the mobile card base (1230) is installed at the rotation limit position of 90°.

8. The airdrop boat model water impact test device according to claim 1, characterized in that: The structure of the airdrop boat model slewing device (130) is as follows: it comprises a telescopic arm connecting annular tube (131), a slewing reduction motor (132), a slewing device connecting vertical support rod (133), an inner gear slewing bearing outer ring (134), an inner gear slewing bearing rolling body (135), an inner gear slewing bearing inner ring (136) and an outer gear (137); The telescopic arm connecting annular tube (131) and the slewing device connecting vertical support rod (133) are fixedly connected, and the slewing device connecting vertical support rod (133) and the inner gear type slewing bearing outer ring (134) are fixedly connected, so that the airdrop boat model slewing device (130) is fixed on the telescopic arm (3); The inner gear slewing bearing outer ring (134), the inner gear slewing bearing rolling body (135) and the inner gear slewing bearing inner ring (136) constitute an inner gear slewing bearing, which is connected to the annular tube (131) through a telescopic arm, and the slewing device connects the vertical support rod (133) and the inner gear slewing bearing outer ring (134) and is connected and fixed to the telescopic arm (3); The inner gear slewing bearing outer ring (134) and the inner gear slewing bearing inner ring (136) are connected via the inner gear slewing bearing rolling element (135), and the inner gear slewing bearing outer ring (134) and the inner gear slewing bearing inner ring (136) rotate relative to each other; The rotary reduction motor (132) is fixedly mounted on the telescopic arm connecting annular tube (131) and is immovable; an external gear (137) is mounted on the shaft of the rotary reduction motor (132), and the external gear (137) is meshed with the internal teeth of the inner ring (136) of the internal gear type rotary bearing; The rotation of the rotary reduction motor (132) drives the rotation of the outer gear (137), which in turn drives the rotation of the inner ring of the internal gear slewing bearing (136) through the gear meshing mode. The inner ring of the internal gear slewing bearing (136) rotates relative to the fixed inner ring of the internal gear slewing bearing (134). The rotation of the airdrop boat model (4) is achieved by means of a slewing bearing fixing frame seat (1220), a guide rod (1210), a movable clamping seat (1230) and a clamping seat mounting frame (1240) fixed on the inner ring of the internal gear slewing bearing (136).

9. The airdrop model water impact test device according to claim 1, characterized in that: The structure of the airdrop boat model tilting device (140) comprises a suspension ring (141), a tilting device structural frame (1410) and a tilting rope retracting roller (1420); the suspension ring (141) is used to connect the lifting rope (113) of the airdrop boat model launching device (110) with the tilting device structural frame (1410); The structure of the tilting device structural frame (1410) is as follows: it includes a side panel opening (1411), a side panel (1412), a middle panel (1413) and an upper and lower panel (1414); there are four side panels (1412), the side panel openings (1411) are arranged on the side panels (1412), and the side panel openings (1411) of two of the side panels (1412) are located at the top, and the side panel openings (1411) of the other two side panels (1412) are located at the bottom. ; The side plate opening (1411) is used for the entry and exit of ropes and the installation of the inclined rope taking-up and releasing drum (1420); the middle plate (1413) is located in the middle of the side plate (1412) and is connected to the surrounding side plates (1412); the middle plate (1413) is used for installing the upper inclined rope taking-up and releasing drum (1420); there are two upper and lower plates (1414), and 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 tilting rope retracting drum (1420) is as follows: it comprises a tilting reduction motor (1421), a motor bracket (1422), a tilting electromagnetic clutch and a shaft (1423), a tilting retracting drum (1424), a tilting rope (1425) and a tilting drum bracket (1426); the tilting reduction motor (1421) and the tilting electromagnetic clutch and the shaft (1423) are used to rotate the tilting retracting drum (1424); the tilting rope (1425) wound around the tilting retracting drum (1424) is extended or shortened as the tilting retracting drum (1424) rotates forward and reversely; the motor bracket (1422) is used to rotate the tilting rope (1425) and the tilting rope (1425 .... 22) is used to support the tilting reduction motor (1421) and the tilting electromagnetic clutch and shaft (1423), and the tilting roller bracket (1426) is used to support the tilting retractable 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 achieve the longitudinal or lateral tilting of the airdrop boat model.

10. A test method for an airdrop boat model water impact test device, characterized in that: The method is used to conduct a test using the airdrop boat model water impact test device according to claim 9, specifically comprising the following steps: Connect the airdrop boat model (4) to the inclined rope (1425), and fix the airdrop boat model delivery guide device (120); According to the test requirements, the airdrop boat model rotation device (130) and the airdrop boat 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; The wave generator (5) is turned on to generate regular waves or random waves with wave height and wavelength that meet the test requirements in the wave resistance pool (4). At the same time, an operator starts the airdrop boat model launching device (110) on the control console (1) to launch the airdrop boat model (4) into the water, tests the test data corresponding to the impact of the airdrop boat model (4) hitting the water, and observes the whole process of the airdrop boat model (4) hitting the water.

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