Horizontal pressure cylinder pendulum adjustable impact test device and method of using same

Abstract

The application relates to a pendulum adjustable collision test device in a horizontal pressure cylinder and a use method thereof. The device comprises a horizontally arranged pressure cylinder, and the pendulum adjustable collision test device comprises a base, front and rear frames with the same size and arranged at intervals in front and back directions are respectively arranged at the front end and the rear end of the top surface of the base, and the front and rear frames are connected and fixed into an integrated frame through a cross beam; a plurality of limiting components are respectively arranged at intervals in the circumferential direction on the front and rear frames, and the end portions of the limiting components are in abutment with the inner wall surface of the pressure cylinder; a telescopic rigid rod is downwardly and rotatably arranged at the top of the integrated frame, the end portion of the telescopic rigid rod is fixed with a heavy ball, and a pressure-resistant electromagnetic suction component is further arranged at the top of the integrated frame behind the telescopic rigid rod; the heavy ball swings backward with the telescopic rigid rod as a radius, the heavy ball is adsorbed by the pressure-resistant electromagnetic suction component in the electric state, and the heavy ball swings forward to hit the test model in front after losing the electric state, so that the test of the structural response of a pressure-resistant structure under the collision impact load under the hydrostatic pressure effect is carried out.

Description

Technical Field

[0001] This invention relates to the field of pressure impact testing technology, and in particular to a horizontal pressure cylinder internal pendulum type adjustable impact testing device and its usage method. Background Technology

[0002] Due to the harsh marine environment, underwater collisions involving underwater vehicles are frequent. Compared to surface ships, underwater vehicles have less buoyancy reserves, making them more susceptible to structural damage from the combined effects of deep-water pressure and impact loads during underwater collisions. This can threaten the lives of crew members and cause secondary disasters.

[0003] In the existing technology, due to the limitations of experimental facilities and experimental costs, the research on structural collision problems in deep-sea high-pressure environments mainly relies on numerical simulation methods. The research progress in the available literature has stopped at software simulation, lacking the necessary experimental research and verification.

[0004] Major research institutions in China have built various deep-sea environment simulation devices, namely pressure cylinders, of different sizes and types. Pressure cylinders are classified into vertical pressure cylinders and horizontal pressure cylinders according to their installation arrangement, but their testing range is mainly hydrostatic pressure tests. Summary of the Invention

[0005] To address the shortcomings of existing production technologies, the applicant provides a horizontally oriented, adjustable pendulum-type collision testing device with a reasonable structure and its usage method. This device is used to conduct structural response tests of pressure-resistant structures under hydrostatic pressure effects and collision impact loads. Furthermore, it allows for flexible adjustment of the pendulum angle and length to simulate collision tests under different loads, providing a powerful experimental verification method for the navigation safety of underwater vehicles.

[0006] The technical solution adopted in this invention is as follows:

[0007] A horizontal pressure cylinder with adjustable pendulum-type impact test device includes a horizontally arranged pressure cylinder. The pendulum-type adjustable impact test device includes a base, with a front frame and a rear frame respectively installed at the front and rear ends of the top surface of the base. The front frame and the rear frame are a ring structure of the same size, arranged at intervals. The front frame and the rear frame are connected and fixed as an integral frame by a crossbeam. Multiple limiting components are installed at intervals along the circumference on the front frame and the rear frame, and the ends of the limiting components abut against the inner wall of the pressure cylinder. A telescopic rigid rod is rotatably installed at the top of the integral frame, and a weight ball is fixed at the end of the telescopic rigid rod. A pressure-resistant electromagnetic suction component is also installed at the top of the integral frame behind the telescopic rigid rod.

[0008] The ball swings backward with a radius of a telescopic rigid rod, and is attracted by a voltage-resistant electromagnetic attraction component that is in an energized state.

[0009] As a further improvement of the above technical solution:

[0010] The base is provided with wheels at the bottom, and the base is supported in the pressure cylinder via the wheels; the integrated frame is arranged concentrically relative to the pressure cylinder, and the limiting assembly comprises a screw rod that is adjusted along the radial direction of the pressure cylinder, and the outer end of the screw rod abuts against the inner wall of the pressure cylinder.

[0011] The limiting assembly comprises a limiting seat that penetrates the front frame or the rear frame in the thickness direction, and the screw rod penetrates the limiting seat and is screw-connected, the end of the screw rod on the inner side of the limiting seat is fixedly provided with a force applying part, and the end of the screw rod on the outer side of the limiting seat is fixedly provided with an abutting part, the outer end of the abutting part is provided with a convex arc surface structure, and the convex arc surface structure abuts against the inner wall of the pressure cylinder.

[0012] The cross beam comprises three or more groups of top ends, left ends and right ends that are connected between the front frame and the rear frame; the telescopic rigid rod is rotatably installed at the top surface of the front frame, and a plurality of hanging holes are arranged along the length direction on the cross beam between the top ends of the front frame and the rear frame, and one of the hanging holes is provided with the pressure-resistant electromagnetic attracting assembly.

[0013] The fixed frame is downwardly installed at the middle part of the inner bottom surface of the front frame, the lower part of the fixed frame is provided with a horizontal shaft that is arranged in the left-right direction, and the horizontal shaft is rotatably installed at the top end of the telescopic rigid rod via a bearing.

[0014] The telescopic rigid rod comprises an outer tube and an inner tube that are inserted and connected along the length direction, the ends of the outer tube and the inner tube that are inserted and connected with each other are provided with a plurality of through holes that are arranged along the length direction, and each of the through holes is arranged along the diameter direction; one of the through holes of the outer tube and one of the through holes of the inner tube are coaxial and are inserted with a pin.

[0015] The pressure-resistant electromagnetic attracting assembly and the heavy ball are located in the same vertical plane, and the pressure-resistant electromagnetic attracting assembly is hung on the integrated frame via a chain hoist; the chain hoist is provided with an upper hook at the top and a lower hook at the bottom, the pressure-resistant electromagnetic attracting assembly is provided with a lifting lug that extends upward at the top, a hanging cable is wound around each of the lifting lugs, and the hanging cable is hung on the lower hook above.

[0016] The pressure-resistant electromagnetic attracting assembly comprises a pressure-resistant tank body with an opening facing upward, and the pressure-resistant tank body contains an electromagnetic chuck inside, the electromagnetic chuck is connected to a power supply via a cable, the electromagnetic chuck generates a magnetic force when powered, and the magnetic force disappears when the power is lost; the opening end of the pressure-resistant tank body is tightly connected with a flange end cover via a flange structure, thereby forming a sealed container, and the flange end cover is provided with a water-tight connector through which the cable is outwardly arranged; the flange edge of the flange end cover is attached to the flange structure at the top of the pressure-resistant tank body and is fixedly connected via fasteners, a sealing element is arranged between the flange end cover and the pressure-resistant tank body, and the sealing element is arranged along the circumference of the opening of the pressure-resistant tank body.

[0017] The bottom surface of the pressure-resistant tank body is fixedly provided with a magnetic plate through a grid, and a limiting plate is arranged on the bottom surface of the magnetic plate; a plurality of limiting plates are arranged along the circumference at intervals, the inner side surface of each limiting plate is provided as a slope structure, and the inner side surfaces of the plurality of limiting plates jointly form a downward-opening conical structure, and the heavy ball is tangent to the inner side surface of the conical structure.

[0018] A use method of the horizontal pressure cylinder inner pendulum type adjustable impact test device, the front part of the bottom surface of the pressure cylinder is fixedly provided with a test model through a fixing seat, and the rear part of the bottom surface of the pressure cylinder is provided with the pendulum type adjustable impact test device;

[0019] The use method comprises the following steps:

[0020] A sensor assembly is arranged on the test model, and the limiting assembly is adjusted so that the end thereof is in abutment with the inner wall surface of the pressure cylinder;

[0021] The length of the telescopic rigid rod is adjusted, and the heavy ball is slightly pushed, so that the heavy ball is located at the center of the bottom surface of the pressure-resistant electromagnetic attraction assembly when the heavy ball swings rearward with the telescopic rigid rod as a radius, and the heavy ball collides with the preset position of the test model when the heavy ball swings forward with the telescopic rigid rod as a radius;

[0022] Cables of the sensor assembly and the pressure-resistant electromagnetic attraction assembly are led out to the outside of the pressure cylinder and are connected to a strain tester and a power supply, respectively;

[0023] The power supply is closed, and the telescopic rigid rod is swung, so that the heavy ball swings rearward and is adsorbed on the middle part of the bottom surface of the pressure-resistant electromagnetic attraction assembly;

[0024] A cylinder cover of the pressure cylinder is installed to be sealed, hydrostatic pressure is loaded, and the hydrostatic pressure in the pressure cylinder reaches a target pressure;

[0025] A switch of the power supply is disconnected, the heavy ball swings with the telescopic rigid rod as a radius due to the disappearance of the magnetic force on the pressure-resistant electromagnetic attraction assembly, and collides with the preset position of the front test model, so that the test model generates an impact structural response, the structural strain and structural deformation of the impact are measured by the sensor assembly, and the impact test in a high-pressure hydrostatic environment is completed.

[0026] The beneficial effects of the present application are as follows:

[0027] This invention features a compact and rational structure, and is easy to operate. Under hydrostatic pressure, the heavy ball at the end of the telescopic rigid rod swings backward and upward and is attracted by the energized pressure-resistant electromagnetic attraction component. After de-energization, the heavy ball swings forward and impacts the test model in front, thereby conducting structural response tests of the pressure-resistant structure under the effect of hydrostatic pressure and the impact load, and studying the strength and stability of the structure. Furthermore, by adjusting the length of the telescopic rigid rod, the angle and length of the pendulum can be flexibly adjusted to simulate collision tests under different loads, thus greatly improving the flexibility of the test and providing a powerful test verification method for the navigation safety of underwater vehicles.

[0028] The present invention also includes the following advantages:

[0029] By utilizing the power-off separation function of the pressure-resistant electromagnetic suction component, a collision simulation test under hydrostatic pressure is effectively realized, enabling the corresponding research on the collision structure of underwater engineering structures with heavy balls. The accuracy is high and the test results are good. Furthermore, the pressure-resistant electromagnetic suction component is reusable, durable, and can be quickly disassembled for maintenance, making it highly practical.

[0030] By adjusting the length of the telescopic rigid rod, the position of the pressure-resistant electromagnetic suction component relative to the ball, and the height of the pressure-resistant electromagnetic suction component itself, collision tests under different loads can be simulated, greatly expanding the testing field of large-scale horizontal pressure cylinders.

[0031] The integrated frame is circumferentially abutted against the bottom surface of the pressure cylinder by the limiting component, so that the position of the pendulum-type adjustable collision test device relative to the pressure cylinder is relatively fixed, which effectively ensures the smooth and successful conduct of the collision test and guarantees the reliability of the test. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention.

[0033] Figure 2 This is a schematic diagram showing the layout and installation of the weighted ball and limiting components on the front frame of the present invention.

[0034] Figure 3 This is a schematic diagram of the telescopic rigid rod of the present invention.

[0035] Figure 4 This is a schematic diagram showing the layout and installation of the pressure-resistant electromagnetic suction component and the limiting component on the rear frame of the present invention.

[0036] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0037] Figure 6 This is a schematic diagram of the structure of the pressure-resistant electromagnetic suction component of the present invention.

[0038] Figure 7 It is a schematic view of the present application when in a test state in a pressure cylinder.

[0039] Wherein: 1, limiting assembly; 2, base; 3, test model; 4, sensor assembly; 5, front frame; 6, heavy ball; 7, crossbeam; 8, rear frame; 9, pressure-resistant electromagnetic suction assembly; 10, power supply; 20, pressure cylinder; 30, fixing seat;

[0040] 11, pressing part; 12, screw rod; 13, limiting seat; 14, force applying part;

[0041] 21, wheel;

[0042] 50, fixing frame; 51, horizontal shaft; 52, bearing;

[0043] 60, telescopic rigid rod; 61, outer tube; 62, bolt; 63, inner tube;

[0044] 71, hanging hole;

[0045] 80, upper hook; 81, hand-operated hoist; 82, lower hook; 83, hanging cable;

[0046] 90, ring rib; 91, watertight joint; 92, lifting lug; 93, flange end cover; 94, sealing element; 95, pressure-resistant tank body; 96, electromagnetic chuck; 97, grating element; 98, magnetic attraction plate; 99, limiting plate. DETAILED DESCRIPTION

[0047] The specific embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0048] As shown in Figure 1 , Figure 2 and Figure 4 , the pendulum type adjustable collision test device in the horizontal pressure cylinder of the present embodiment comprises a horizontally laid pressure cylinder 20, and the pendulum type adjustable collision test device comprises a base 2, the top surface of the base 2 is provided with a front frame 5 and a rear frame 8 at the front end and the rear end respectively, the front frame 5 and the rear frame 8 are annular structures with the same size and are arranged in front of and behind each other, and the front frame 5 and the rear frame 8 are connected and fixed as an integrated frame via a crossbeam 7; a plurality of limiting assemblies 1 are arranged on the front frame 5 and the rear frame 8 respectively along the circumferential direction at intervals, and the end portions of the limiting assemblies 1 are in abutment with the inner wall surface of the pressure cylinder 20; a telescopic rigid rod 60 is rotatably installed downward on the top of the integrated frame, the telescopic rigid rod 60 is fixed with a heavy ball 6 at the end portion, and a pressure-resistant electromagnetic suction assembly 9 is further installed on the top of the integrated frame behind the telescopic rigid rod 60;

[0049] The heavy ball 6 swings backward with the telescopic rigid rod 60 as the radius, and the heavy ball 6 is attracted by the pressure-resistant electromagnetic suction assembly 9 in the electrified state.

[0050] In the state of loading hydrostatic pressure, the heavy ball 6 at the end of the telescopic rigid rod 60 swings back and up and is adsorbed by the pressure-resistant electromagnetic suction assembly 9 in the state of electricity, and after the electricity is turned off, the heavy ball 6 swings forward and hits the test model 3 in front, so that the structural response test of the pressure-resistant structure under the impact load under the effect of hydrostatic pressure is carried out, and the strength and stability of the structure are studied; and through the adjustment of the length of the telescopic rigid rod 60, the swing angle and length can be flexibly adjusted, which is used for simulating the impact test under different loads.

[0051] In the embodiment, the de-energization separation function of the pressure-resistant electromagnetic suction assembly 9 for the heavy ball 6 effectively realizes the impact simulation test in the state of hydrostatic pressure, realizes the corresponding research on the heavy ball 6 impact structure of the underwater engineering structure, has high accuracy and good test effect; and the pressure-resistant electromagnetic suction assembly 9 can be repeatedly used and is durable, and can be maintained through the quick disassembly and assembly of the pressure-resistant electromagnetic suction assembly 9, and has good practicability.

[0052] The base 2 is provided with wheels 21 at the bottom, and the base 2 is supported in the pressure cylinder 20 through the wheels 21; the integral frame is concentrically arranged relative to the pressure cylinder 20, and the limiting assembly 1 comprises a screw rod 12 that is adjusted in the radial direction of the pressure cylinder 20, and the outer end of the screw rod 12 abuts against the inner wall surface of the pressure cylinder 20.

[0053] The integral frame is abutted on the inner bottom surface of the pressure cylinder 20 through the limiting assembly 1 in the circumferential direction, so that the position of the pendulum type adjustable impact test device relative to the pressure cylinder 20 is relatively fixed, which effectively ensures the smooth and smooth performance of the impact test and guarantees the reliability of the test.

[0054] The structure of the limiting assembly 1 is that it further comprises a limiting seat 13 that penetrates the front frame 5 or the rear frame 8 in the thickness direction, the screw rod 12 penetrates the limiting seat 13 and is screw-fitted, the end of the screw rod 12 located on the inner side of the limiting seat 13 is fixedly provided with a force applying part 14, and the end of the screw rod 12 located on the outer side of the limiting seat 13 is fixedly provided with an abutting part 11, the outer end of the abutting part 11 is provided with an outward convex arc surface structure, and the outward convex arc surface structure abuts against the inner wall surface of the pressure cylinder 20.

[0055] The force is applied to the force applying part 14, so that the screw rod 12 rotates relative to the limiting seat 13, thereby adjusting the position of the length direction of the screw rod 12 relative to the limiting seat 13, and adjusting the abutting state of the abutting part 11 at the end of the screw rod 12 relative to the inner wall surface of the pressure cylinder 20.

[0056] In the embodiment, a through hole can be formed on the force applying part 14, the through hole is perpendicular to the length direction of the screw rod 12, an external tool passes through the through hole on the force applying part 14, and the screw rod 12 is rotated through the external tool, so that the abutting adjustment of the limiting assembly 1 is realized, and the use is convenient.

[0057] The crossbeam 7 includes three or more sets of top, left and right ends connected between the front frame 5 and the rear frame 8; the telescopic rigid rod 60 is rotatably installed on the inner top surface of the front frame 5; multiple mounting holes 71 are spaced apart along the length direction on the crossbeam 7 located between the top of the front frame 5 and the rear frame 8, and a pressure-resistant electromagnetic suction component 9 is mounted on one of the mounting holes 71.

[0058] In this embodiment, three sets of crossbeams 7 can be provided, which, together with the base 2, are located in the upper, lower, left, and right directions of the front frame 5 and the rear frame 8, respectively; four sets of limiting components 1 can be provided, with the four sets of limiting components 1 distributed in the interval between adjacent crossbeams 7 and between the crossbeams 7 and the base 2.

[0059] The front frame 5, rear frame 8, and crossbeam 7 all have T-shaped cross sections, which effectively ensures the structural strength of the integrated frame.

[0060] In this embodiment, the distance between the pressure-resistant electromagnetic suction assembly 9 and the weight ball 6 in the front-to-back direction is conveniently adjusted by setting multiple mounting holes 71 on the crossbeam 7.

[0061] A fixed frame 50 is installed downward in the middle of the inner bottom surface of the front frame 5. A horizontal shaft 51 with the axial direction arranged left and right is provided at the lower part of the fixed frame 50. The horizontal shaft 51 is rotatably installed on the top of the telescopic rigid rod 60 via the bearing 52, thereby effectively ensuring the smoothness and reliability of the forward swing of the heavy ball 6 relative to the front frame 5 during the collision test, and the telescopic rigid rod 60 effectively ensures the swing trajectory of the heavy ball 6.

[0062] like Figure 3 As shown, the structure of the telescopic rigid rod 60 is as follows: it includes an outer tube 61 and an inner tube 63 that are inserted into each other along the length direction. The ends of the outer tube 61 and the inner tube 63 that are inserted into each other are provided with multiple through holes at intervals along the length direction. Each through hole is arranged through the diameter direction. One of the through holes on the outer tube 61 and one of the through holes on the inner tube 63 are axially aligned and are jointly inserted with a pin 62.

[0063] In this embodiment, the overall length of the telescopic rigid rod 60 is adjusted by adjusting the insertion distance in the length direction between the outer tube 61 and the inner tube 63, and the outer tube 61 and the inner tube 63 are fixed relative to each other after adjustment by inserting the pin 62. The adjustment is convenient, reliable and practical.

[0064] The pressure-resistant electromagnetic suction component 9 and the weight ball 6 are located in the same vertical plane, allowing the weight ball 6 to swing within this vertical plane. The pressure-resistant electromagnetic suction component 9 is mounted on the integrated frame via a hand-operated hoist 81. Figure 5As shown, the top of the hoist 81 is provided with an upper hook 80, the bottom of the hoist 81 is provided with a lower hook 82, the top of the pressure-resistant electromagnetic assembly 9 extends upwardly with a lug 92, the hanging cable 83 is wound around each lug 92, and the hanging cable 83 is hung with the lower hook 82 above.

[0065] The hoist 81 is provided, on the one hand, to facilitate the hanging and adjustment of the pressure-resistant electromagnetic assembly 9 relative to the integral frame, and on the other hand, to achieve rapid adjustment of the height of the pressure-resistant electromagnetic assembly 9.

[0066] As shown, Figure 6 The pressure-resistant electromagnetic assembly 9 has the structure as follows: a pressure-resistant tank 95 with an opening facing upward, the pressure-resistant tank 95 internally containing an electromagnetic chuck 96, the electromagnetic chuck 96 being connected to the power supply 10 via a cable, the electromagnetic chuck 96 generating a magnetic force when powered and disappearing when powered off; the upper opening end of the pressure-resistant tank 95 being airtight fitted with a flange end cover 93 via a flange structure, constituting a closed container, the flange end cover 93 being installed with a water-tight joint 91 for the cable to pass out; the flange edge of the flange end cover 93 being fitted with the flange structure at the top of the pressure-resistant tank 95 and being fixedly fitted with each other via fasteners, so that the pressure-resistant electromagnetic assembly 9 is convenient to disassemble, maintain and assemble; the flange end cover 93 and the pressure-resistant tank 95 being pressed together between the interfaces, the sealing element 94 being arranged around the opening of the pressure-resistant tank 95 along the circumference, and the sealing element 94 achieving airtight fitting between the two.

[0067] In this embodiment, the pressure-resistant tank 95 is a cylindrical container with an opening facing upward, the pressure-resistant tank 95 has a plurality of groups of ring ribs 90 arranged along the circumference on the outer wall surface.

[0068] The pressure-resistant tank 95 has a magnetic plate 98 fixedly installed on the bottom surface via a grid element 97, the magnetic plate 98 has a limiting plate 99 installed on the bottom surface, the grid element 97 can be a reinforcing rib structure intersecting in a cross shape for reinforcing the overall structure; the limiting plates 99 are arranged along the circumference at intervals, the inner side surface of each limiting plate 99 is provided as an inclined surface structure, the inner side surfaces of the plurality of limiting plates 99 collectively constitute a conical structure with an opening facing downward, and the heavy ball 6 is tangent to the inner side surface of the conical structure; thereby, the plurality of limiting plates 99 collectively limit the heavy ball 6 to the center position of the bottom surface of the pressure-resistant electromagnetic assembly 9, effectively prevent the heavy ball 6 from shaking, and effectively ensure the smooth progress of the test.

[0069] In this embodiment, the length adjustment of the telescopic rigid rod 60, the adjustment of the position of the pressure-resistant electromagnetic assembly 9 relative to the heavy ball 6, and the adjustment of the height of the pressure-resistant electromagnetic assembly 9 itself are used to simulate the collision test under different load sizes, greatly expanding the test field of large-scale horizontal pressure cylinders.

[0070] In this embodiment, the hand chain hoist 81 is a standard product purchased from outside. It is a simple and portable manual lifting machine that facilitates the quick installation of the pressure-resistant electromagnetic suction component 9 on the integrated frame, as well as the quick adjustment and relative fixation of its height.

[0071] like Figure 7 As shown, in the actual test, the test model 3 is fixed to the front part of the bottom surface of the pressure cylinder 20 via the fixing seat 30, and the pendulum-type adjustable collision test device is installed at the rear part of the bottom surface of the pressure cylinder 20.

[0072] The method of using the horizontal pressure cylinder internal pendulum adjustable impact test device of this embodiment includes the following steps:

[0073] Sensor assembly 4, including strain sensors and displacement sensors, is installed on test model 3;

[0074] Use a wedge to limit and lock the wheel 21; adjust the limiting component 1 so that its end abuts against the inner wall of the pressure cylinder 20; complete the limiting of the pendulum-type adjustable collision test device relative to the pressure cylinder 20;

[0075] The pressure-resistant electromagnetic suction component 9 is hung on the integrated frame, and the height of the pressure-resistant electromagnetic suction component 9 is adjusted by the hand chain hoist 81; the length of the telescopic rigid rod 60 is adjusted, and the heavy ball 6 is gently pushed so that when the heavy ball 6 swings backward with the telescopic rigid rod 60 as the radius, it is exactly located at the center of the bottom surface of the pressure-resistant electromagnetic suction component 9; when the heavy ball 6 swings forward with the telescopic rigid rod 60 as the radius, it collides with the preset position of the test model 3.

[0076] Lead the cables of sensor assembly 4 and pressure-resistant electromagnetic suction assembly 9 to the outside of pressure cylinder 20, and connect them to strain tester and power supply 10 respectively;

[0077] When the power supply 10 is turned on, the telescopic rigid rod 60 is swung, causing the ball 6 to swing backward and adhere to the middle of the bottom surface of the pressure-resistant electromagnetic suction assembly 9.

[0078] Install the cap of the pressure cylinder 20 to seal it, and apply hydrostatic pressure until the hydrostatic pressure inside the pressure cylinder 20 reaches the target pressure.

[0079] When the power supply 10 is disconnected, as the magnetic force on the pressure-resistant electromagnetic suction component 9 disappears, the heavy ball 6 swings with the radius of the telescopic rigid rod 60 and impacts the preset position of the test model 3 in front, causing the test model 3 to undergo an impact structural response. The structural strain and structural deformation of the impact are measured by the sensor component 4, thus completing the impact test under high pressure and static water environment.

[0080] This invention can simulate pressure collision tests under different loads, greatly improving the flexibility of the test and providing a powerful test verification method for the navigation safety of underwater vehicles.

[0081] The above description is an explanation of the present application, not a limitation of the present application, the scope of the present application is defined by the claims, within the scope of the present application, any form of modification can be made.

Claims

1. A pendulum adjustable impact testing device in a horizontal pressure cylinder, comprising a horizontally arranged pressure cylinder (20), characterized in that: The pendulum adjustable impact test device comprises a base (2), the front end and the rear end of the top surface of the base (2) are respectively provided with a front frame (5) and a rear frame (8), the front frame (5) and the rear frame (8) are annular structures with the same size and arranged in front and back, and the front frame (5) and the rear frame (8) are connected and fixed into an integral frame through a cross beam (7); a plurality of limiting assemblies (1) are respectively arranged on the front frame (5) and the rear frame (8) and spaced apart along the circumferential direction, and the end of each limiting assembly (1) abuts against the inner wall of a pressure cylinder (20); a telescopic rigid rod (60) is rotatably arranged on the top of the integral frame and downwardly extends, a heavy ball (6) is fixed to the end of the telescopic rigid rod (60), and a pressure-resistant electromagnetic assembly (9) is further arranged on the top of the integral frame behind the telescopic rigid rod (60). The heavy ball (6) swings backward along the telescopic rigid rod (60) as a radius, and the heavy ball (6) is adsorbed by the pressure-resistant electromagnetic assembly (9) in an electrified state.

2. The horizontal pressure cylinder pendulum adjustable impact testing device according to claim 1, characterized in that: Wheels (21) are arranged on the bottom of the base (2), and the base (2) is supported in the pressure cylinder (20) through the wheels (21); the integral frame is concentrically arranged relative to the pressure cylinder (20), and the limiting assembly (1) comprises a screw rod (12) which is telescopically adjusted along the radial direction of the pressure cylinder (20), and the outer end of the screw rod (12) abuts against the inner wall of the pressure cylinder (20).

3. The horizontal pressure cylinder inside pendulum adjustable impact testing device according to claim 1, characterized in that: The limiting assembly (1) further comprises a limiting seat (13) which penetrates the front frame (5) or the rear frame (8) along the thickness direction, the screw rod (12) penetrates the limiting seat (13) and is screw-connected, the end of the screw rod (12) on the inner side of the limiting seat (13) is fixedly provided with a force applying part (14), the end of the screw rod (12) on the outer side of the limiting seat (13) is fixedly provided with a pressing part (11), the outer end of the pressing part (11) is provided with an outward convex arc surface structure, and the outward convex arc surface structure abuts against the inner wall of the pressure cylinder (20).

4. The horizontal pressure cylinder inside pendulum adjustable impact testing device of claim 1, wherein: The cross beam (7) comprises three or more groups of top ends, left ends and right ends which are connected between the front frame (5) and the rear frame (8); the telescopic rigid rod (60) is rotatably arranged on the top surface of the front frame (5), a plurality of hanging holes (71) are arranged on the cross beam (7) between the top ends of the front frame (5) and the rear frame (8) and spaced apart along the length direction, and one of the hanging holes (71) is provided with the pressure-resistant electromagnetic assembly (9).

5. The horizontal pressure cylinder inside pendulum adjustable impact testing device of claim 1, wherein: A fixing frame (50) is downwardly arranged on the middle part of the inner bottom surface of the front frame (5), the lower part of the fixing frame (50) is provided with a horizontal shaft (51) which is arranged in the left-right direction, and the top end of the telescopic rigid rod (60) is rotatably arranged on the horizontal shaft (51) through a bearing (52).

6. The adjustable impact testing device of claim 1, wherein: The telescopic rigid rod (60) comprises an outer tube (61) and an inner tube (63) which are telescopically arranged along the length direction, the end of the outer tube (61) and the end of the inner tube (63) which are telescopically arranged are both provided with a plurality of through holes which are spaced apart along the length direction, and each of the through holes is arranged along the diameter direction; one of the through holes of the outer tube (61) and one of the through holes of the inner tube (63) are coaxial and telescopically arranged with a pin (62).

7. The horizontal pressure cylinder inside pendulum adjustable impact testing device of claim 1, wherein: The pressure-resistant electromagnetic suction assembly (9) is located in the same vertical plane with the heavy ball (6), and the pressure-resistant electromagnetic suction assembly (9) is hung on the integral frame through the chain hoist (81); the top of the chain hoist (81) is provided with an upper hook (80), the bottom of the chain hoist (81) is provided with a lower hook (82), the top of the pressure-resistant electromagnetic suction assembly (9) extends upwardly with a lifting lug (92), a hanging cable (83) is wound around each lifting lug (92), and the hanging cable (83) is hung with the lower hook (82) above.

8. The horizontal pressure cylinder inside pendulum adjustable impact testing device of claim 1, wherein: The structure of the pressure-resistant electromagnetic suction assembly (9) is that the pressure-resistant electromagnetic suction assembly (9) comprises an upwardly open pressure-resistant tank body (95), the pressure-resistant tank body (95) contains an electromagnetic suction disc (96) inside, the electromagnetic suction disc (96) is connected to a power supply (10) through a cable, the electromagnetic suction disc (96) generates a magnetic force when powered on, and the magnetic force disappears when powered off; the flange end cover (93) is tightly and closely fitted on the upper opening end of the pressure-resistant tank body (95) through a flange structure, forming a closed container, and the water-tight joint (91) for the cable to pass out is mounted on the flange end cover (93); the flange edge of the flange end cover (93) is attached to the flange structure on the top of the pressure-resistant tank body (95) and is fixedly fitted with each other through fasteners, and the sealing element (94) is press-fitted between the flange end cover (93) and the top of the pressure-resistant tank body (95), and the sealing element (94) is arranged around the opening of the pressure-resistant tank body (95) in the circumferential direction.

9. The horizontal pressure cylinder inside pendulum adjustable impact testing device of claim 8, wherein: The bottom surface of the pressure-resistant tank body (95) is fixedly installed with a magnetic suction plate (98) through a grid element (97), and the bottom surface of the magnetic suction plate (98) is installed with a limiting plate (99); a plurality of limiting plates (99) are arranged in the circumferential direction, the inner side surface of each limiting plate (99) is provided as an inclined surface structure, and the inner side surfaces of the plurality of limiting plates (99) jointly form a downwardly open conical structure, and the heavy ball (6) is tangent to the inner side surface of the conical structure.

10. A method of using the pendulum impact testing apparatus of claim 1 within a horizontal pressure vessel, wherein: The front part of the inner bottom surface of the pressure cylinder (20) is fixed with a test model (3) through a fixed seat (30), and the rear part of the inner bottom surface of the pressure cylinder (20) is installed with a pendulum type adjustable collision test device; The use method comprises the following steps: The sensor assembly (4) is arranged on the test model (3), and the limiting assembly (1) is adjusted so that the end thereof is in contact with the inner wall surface of the pressure cylinder (20); The length of the telescopic rigid rod (60) is adjusted, the heavy ball (6) is pushed slightly, so that when the heavy ball (6) swings backward with the telescopic rigid rod (60) as the radius, the heavy ball (6) is located at the center of the bottom surface of the pressure-resistant electromagnetic suction assembly (9), and when the heavy ball (6) swings forward with the telescopic rigid rod (60) as the radius, the heavy ball (6) collides with the test model (3) at the preset position; The cable of the sensor assembly (4) and the pressure-resistant electromagnetic suction assembly (9) is led out to the outside of the pressure cylinder (20) and connected to a strain tester and a power supply (10) respectively; The power supply (10) is closed, the telescopic rigid rod (60) is swung, so that the heavy ball (6) swings backward and is adsorbed on the middle part of the bottom surface of the pressure-resistant electromagnetic suction assembly (9); The cylinder cover of the pressure cylinder (20) is installed to be sealed, the hydrostatic pressure is loaded, and the hydrostatic pressure in the pressure cylinder (20) reaches the target pressure. The switch of the power supply (10) is turned off, and the heavy ball (6) swings with the elastic rigid rod (60) as the radius, hits the preset position of the front test model (3), so that the test model (3) has a collision structural response, the structural strain and structural deformation of the collision are measured by the sensor assembly (4), and the collision test under the high-pressure static water environment is completed.

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