CN110979730A - Height-adjustable and angle-adjustable rectangular box body water hammer effect test support - Google Patents
Height-adjustable and angle-adjustable rectangular box body water hammer effect test support Download PDFInfo
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- CN110979730A CN110979730A CN201911248683.1A CN201911248683A CN110979730A CN 110979730 A CN110979730 A CN 110979730A CN 201911248683 A CN201911248683 A CN 201911248683A CN 110979730 A CN110979730 A CN 110979730A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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Abstract
The invention provides a height-adjustable and angle-adjustable rectangular box body water hammer effect test support which comprises a support base, a lifting actuator, a connecting plate, a horizontal height support plate, an angle actuator, an angle support frame and a connecting hinge. The lower surface of the supporting base is arranged on the ground, and the upper surface of the supporting base is connected with the bottom end of the lifting actuator; the top end of the lifting actuator is fixedly connected with the horizontal height supporting plate through a connecting plate; the angle support frame is connected with the horizontal support plate through the connecting hinge, and the angle actuator is connected between the horizontal support plate and the angle support frame. According to the invention, by adjusting the lifting actuator and the angle actuator, the adjustment of any height and 0-90-degree angle range of the test box body can be realized, and a means can be provided for realizing a water hammer effect test of high-speed fragment impact simulation box bodies with different angles; the angle controller can realize the accurate control of the angle of the device, and has the advantages of simple operation and accurate control.
Description
Technical Field
The invention belongs to the technical field of damage assessment and testing, and particularly relates to a height-adjustable and angle-adjustable rectangular box water hammer effect test support.
Background
The fuel system is the system with the largest exposed area of the aircraft, and the fuel tank is the most important component constituting the fuel system. The water hammer effect, one of the main damage modes of an aircraft fuel tank, means that when a high-speed fragment penetrates through a fuel tank filled with oil, the fragment is subjected to the resistance of the fuel, and the kinetic energy of the fragment is transmitted to a fuel tank wall plate through the fuel, so that the fuel tank structure is catastrophically damaged.
Because of the flammable and explosive characteristics of the oil, the high-speed impact test is not easy to control and is easy to cause danger, and therefore water with similar density to the oil is mostly adopted to replace aviation kerosene in the test. Meanwhile, because the structural form of the aircraft fuel tank is complex, the conventional multipurpose rectangular tank body filled with water inside is used for carrying out substitution simulation on the aircraft fuel tank. The experimental study of the water hammer effect of the equivalent aircraft fuel tank under the impact of high-speed fragment mainly takes abroad as a main point, and the study mainly focuses on the damage mechanism and the influence factors of the water hammer effect, for example, American Ball and the like firstly carry out the experimental study of the water hammer effect through a 22mm caliber rifle and a cubic liquid-filling tank body, and indicate that the incident angle and the quality of the fragment are main factors influencing the energy loss of the fragment, and the influence of the shape and the quality of the fragment on the penetrating speed and the shock wave of the fragment is small; spain Varas and the like perform a water hammer effect test on a liquid-filled aluminum pipe with liquid filling rates of 50%, 75% and 100%, compare the influence of different fragment speeds (600 and 900m/s) on the water hammer effect, and record the whole water hammer process by using a high-speed camera; nishida et al completed the hit test of aluminum alloy thin-walled square tubes, studied the propagation of cracks in the panel, and pointed out that the most significant factors were the highest strength of the panel material, the diameter of the bullet, etc. However, these are developed for a simulated fuel tank placed horizontally, and do not involve the influence of the different oil-gas penetration paths with the fragments caused by the incident angle on the water hammer effect. In fact, under the condition of real bullet-and-eye intersection, the high-speed fragments usually impact into the oil tank at a certain angle, and further cause the damage of the water hammer effect. In order to realize the simulation test of the actual working condition, a height-adjustable and angle-adjustable rectangular box body water hammer effect test support is urgently needed to be designed.
Disclosure of Invention
Technical problem to be solved
The invention provides a height-adjustable and angle-adjustable water hammer effect test support for a rectangular box body, which aims to solve the technical problem of how to realize the incidence of high-speed fragments to the rectangular box body at different angles so as to simulate the water hammer effect of an equivalent aircraft oil tank under the action of fragment impact and further provide support for the damage test and evaluation of an aircraft structure.
(II) technical scheme
In order to solve the technical problem, the invention provides a height-adjustable and angle-adjustable rectangular box body water hammer effect test support which comprises a support base, a lifting actuator, a connecting plate, a horizontal support plate, an angle actuator, an angle support frame and a connecting hinge, wherein the support base is provided with a support base; wherein, the lower surface of the supporting base is arranged on the ground, and the upper surface is connected with the bottom end of the lifting actuator; the top end of the lifting actuator is fixedly connected with the horizontal height supporting plate through a connecting plate; the angle support frame is connected with the horizontal support plate through the connecting hinge, and the angle actuator is connected between the horizontal support plate and the angle support frame.
Further, the test support comprises a plurality of groups of supporting bases, lifting actuators and connecting plates, and the central lines of each group of supporting bases, the lifting actuators and the connecting plates are overlapped.
Furthermore, lift actuator includes cavity hydraulic cylinder and the lift actuator hydraulic stem that links to each other, and the upper surface and the lift actuator hydraulic stem bottom of supporting the base are connected, and lift actuator hydraulic cylinder top is connected with the connecting plate to link firmly with the level backup pad through the connecting plate.
Furthermore, the test support also comprises a plurality of displacement limiting plates welded on the inner side of the angle support frame and used for limiting the displacement of the rectangular box body.
Further, the test support still includes angle controller, and angle controller includes plumb pointer and calibrated scale, and the calibrated scale is fixed on angle support frame, and pointer one end hangs on the calibrated scale, and the other end freely hangs down.
Furthermore, the dial is provided with 0-90-degree scales.
Furthermore, rectangular grooves are formed in the upper surface of the horizontal height supporting plate, the positions of the rectangular grooves correspond to the angle actuators, a U-shaped horizontal height supporting plate connecting lug is arranged at the center of one end of the inner bottom surface of each rectangular groove, the plane end of the horizontal height supporting plate connecting lug is connected with the bottom surface of the inner side of each rectangular groove, and a threaded through hole is formed in the arc end;
the angle actuator comprises an angle actuator bottom end connecting lug, an angle actuator actuating rod, an angle actuator hollow hydraulic actuating cylinder and an angle actuator top end connecting lug; the connecting lug piece at the bottom end of the angle actuator is U-shaped, the plane end is connected with the actuating rod of the angle actuator, the arc end is provided with a threaded through hole, and the center line of the hole is superposed with the center line of the threaded through hole of the connecting lug piece of the horizontal supporting plate; the connecting lug piece at the top end of the angle actuator is U-shaped, the plane end is connected with the hollow hydraulic actuating cylinder of the angle actuator, the arc end is provided with a threaded through hole, and the center line of the hole is superposed with the center line of the threaded through hole of the connecting lug piece of the angle support frame;
the bottom surface both sides of angle support frame are connected with U-shaped angle support frame connection lug piece for be connected with angle actuator top connection lug piece, a screw thread through-hole has been seted up to the arc end.
Further, the width and depth of the rectangular groove are both 1.2 times the maximum diameter of the angular actuator.
Further, the angle support frame main part is the cavity frame, and four sides are the L shape, and the size matches with the level backup pad, and long limit downside is coaxial with the long limit upside of level backup pad.
Furthermore, the connection hinges are multiple in number, each connection hinge takes the central line as a movable rotating shaft, one half of the connection hinges are connected with the side face of the horizontal support plate, the other half of the connection hinges are connected with the side face of the angle support frame, and the connection hinges are collinear and overlapped with the connecting lines of the horizontal support plate and the angle support frame.
(III) advantageous effects
The invention provides a height-adjustable and angle-adjustable rectangular box body water hammer effect test support which comprises a support base, a lifting actuator, a connecting plate, a horizontal height support plate, an angle actuator, an angle support frame and a connecting hinge. The lower surface of the supporting base is arranged on the ground, and the upper surface of the supporting base is connected with the bottom end of the lifting actuator; the top end of the lifting actuator is fixedly connected with the horizontal height supporting plate through a connecting plate; the angle support frame is connected with the horizontal support plate through the connecting hinge, and the angle actuator is connected between the horizontal support plate and the angle support frame.
The technical effects of the invention are embodied in the following aspects:
1. by adjusting the lifting actuator and the angle actuator, the adjustment of any height and 0-90-degree angle range of the test box body can be realized, and a means can be provided for realizing a water hammer effect test of high-speed fragment impact simulation box bodies with different angles;
2. the angle controller can realize the accurate control of the angle of the device, and has the advantages of simple operation and accurate control.
Drawings
FIG. 1 is a schematic overview of a test rack configuration according to an embodiment of the present invention;
FIG. 2 is an elevation view of a web construction in an embodiment of the present invention;
FIG. 3 is a top view of a horizontal support plate body construction in accordance with an embodiment of the present invention;
FIG. 4 is an isometric view of an angular actuator structure according to an embodiment of the present invention;
FIG. 5 is an isometric view of an angular support frame structure in an embodiment of the present invention;
FIG. 6 is a front view of an angle controller structure in an embodiment of the present invention;
FIG. 7 is a schematic illustration of a test rack test of an embodiment of the present invention.
In the figure, 1, a supporting base, 2, a lifting actuator, 2-1, a hollow hydraulic cylinder of the lifting actuator, 2-2, a hydraulic rod of the lifting actuator, 3, a connecting plate, 3-1, a threaded hole of the connecting plate, 4, a horizontal supporting plate, 4-1, a threaded hole of the horizontal supporting plate, 4-2, a groove, 4-3, a connecting lug of the horizontal supporting plate, 5, an angle actuator, 5-1, a connecting lug at the bottom end of the angle actuator, 5-2, a hydraulic rod of the angle actuator, 5-3, a hollow hydraulic cylinder of the angle actuator, 5-4, a connecting lug at the top end of the angle actuator, 6, an angle supporting frame, 6-1, a connecting lug of the angle supporting frame, 7, a connecting hinge, 8, a displacement limiting plate, 9, an angle controller, 9-1, a pointer, 9-2, 10. rectangular oil tank, 11. high-speed fragmentation.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment provides a height-adjustable and angle-adjustable rectangular box body water hammer effect test support which is structurally shown in a figure 1 and comprises a support base 1, a lifting actuator 2, a connecting plate 3, a horizontal support plate 4, an angle actuator 5, an angle support frame 6, a connecting hinge 7, a displacement limiting plate 8 and an angle controller 9.
The number of the lifting actuators 2 is 4, the size is determined according to the required height of the test, each lifting actuator 2 comprises 1 cylindrical hollow metal material hydraulic cylinder 2-1 and 1 cylindrical metal material lifting actuator hydraulic rod 2-2, the top end of each lifting actuator hydraulic cylinder 2-1 is welded with the connecting plate 3, and the lifting actuators are fixedly connected with the horizontal height supporting plate 4 through the connecting plate 3 through bolts.
As shown in fig. 2, the connecting plates 3 are square metal plates, 4 plates are arranged in a 2 × 2 matrix, any side of the matrix is parallel to the outer edge line of the horizontal support plate 4, each connecting plate 3 is provided with 4 threaded through holes 3-1, and the connecting plates are arranged in a 2 × 2 matrix and connected with the horizontal support plate 4 through the bolt connection lifting actuators 2.
The central lines of each group of supporting base 1, lifting actuator 2 and connecting plate 3 are superposed.
The main body of the horizontal supporting plate 4 is a thick metal plate, 16 horizontal supporting plate threaded through holes 4-1 are formed in the plate, and each 4 horizontal supporting plate threaded through holes are in a group, are located at four corners of the horizontal supporting plate 4 and correspond to threaded holes of the connecting pieces 3 in size and position one by one.
As shown in FIG. 3, the upper surface of the horizontal support plate 4 is provided with two rectangular grooves 4-2, which are respectively located near the short sides of the horizontal support plate 4, the long sides and the short sides of the rectangular grooves 4-2 are respectively parallel to the short sides and the long sides of the horizontal support plate 4, and the width and the depth of the rectangular grooves 4-2 are both 1.2 times of the maximum diameter of the angle actuator 2. Two U-shaped horizontal height supporting plate connecting lugs 4-3 are arranged at the center of one end of the inner bottom surface of each rectangular groove 4-2 and are parallel to each other, the plane end of each horizontal height supporting plate connecting lug 4-3 is welded with the inner bottom surface of each rectangular groove 4-2, and a threaded through hole is formed in the arc end.
The number of the angle actuators 5 is two, and each angle actuator 5 comprises an angle actuator bottom connecting lug 5-1, an angle actuator actuating rod 5-2, a metal material angle actuator hollow hydraulic cylinder 5-3 and two angle actuator top connecting lugs 5-4 as shown in fig. 4. The bottom end connecting lug piece 5-1 of the angle actuator is U-shaped, the plane end is welded with the actuating rod 5-2 of the angle actuator, the arc end is provided with 1 threaded through hole, and the hole center line is superposed with the threaded through hole center line of the horizontal height supporting plate connecting lug piece 4-3. The connecting lug 5-4 at the top end of the angle actuator is U-shaped, the plane end is welded with the hollow hydraulic actuating cylinder 5-3 of the angle actuator, the arc end is provided with a threaded through hole, and the center line of the hole is superposed with the center line of the threaded through hole of the connecting lug 6-1 of the angle support frame.
As shown in fig. 5, the main body of the angle support frame 6 is a hollow frame made of metal, four sides of the hollow frame are L-shaped, the size of the hollow frame is matched with that of the horizontal support plate 4, the lower side of the long side of the hollow frame is coaxial with the upper side of the long side of the horizontal support plate 4, and the hollow frame is connected with the horizontal support plate 4 through a connecting hinge 7. Two U-shaped angle support frame connection lug pieces 6-1 are welded on two sides of the bottom surface of the angle support frame 6 and used for being connected with the top end connection lug pieces 5-4 of the angle actuator, and a threaded through hole is formed in the arc-shaped end.
The connecting hinges 7 are three in total, each connecting hinge uses a central line as a movable rotating shaft, one half of the connecting hinge is welded with the side surface of the horizontal supporting plate 4, the other half of the connecting hinge is welded with the side surface of the angle supporting plate 6, the rotating shafts of the three connecting hinges 7 are collinear, and the connecting wires of the horizontal supporting plate 4 and the angle supporting plate 6 are superposed.
The displacement limiting plates 8 are four in total and are welded on the inner sides of four corners of the angle supporting frame 6 respectively, and each displacement limiting plate 8 is L-shaped and used for limiting the displacement of the rectangular box body.
As shown in FIG. 6, the angle controller 9 comprises a vertical pointer 9-1 and a semicircular scale disc 9-2 with an angle of 0-90 degrees, one end of the pointer 9-1 is hung on the scale disc 9-2 through a steel nail, and the other end of the pointer freely falls. The dial plate 9-2 is welded on the bottom surface of the angle support frame 6 at the plane end.
Fig. 7 is a front view of the test rack of this embodiment for performing a water hammer effect test of a water-filled rectangular box, in which a water-filled rectangular simulated oil tank 10 with dimensions of 1600mm × 800mm × 500mm is placed on the angle support frame of this embodiment, the lifting actuator is adjusted to 0.8m, the angle actuator is adjusted to an angle controller to 30 degrees, and a high-speed fragment 11 with a diameter of 5mm × 6.5mm impacts the angle support frame at a speed of 1000 m/s.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A height-adjustable and angle-adjustable rectangular box body water hammer effect test support is characterized by comprising a support base, a lifting actuator, a connecting plate, a horizontal height support plate, an angle actuator, an angle support frame and a connecting hinge; the lower surface of the supporting base is arranged on the ground, and the upper surface of the supporting base is connected with the bottom end of the lifting actuator; the top end of the lifting actuator is fixedly connected with the horizontal height supporting plate through the connecting plate; the angle support frame passes through connect the hinge and link to each other with the level backup pad, the angle actuator is connected between level backup pad and the angle support frame.
2. The test rack of claim 1, wherein the test rack comprises a plurality of sets of support bases, lift actuators, and connecting plates, the center lines of each set of support bases, lift actuators, and connecting plates coinciding.
3. The test rack of claim 1, wherein the lift actuator comprises a hollow hydraulic cylinder and a lift actuator hydraulic rod connected together, the upper surface of the support base is connected to the bottom end of the lift actuator hydraulic rod, and the top end of the lift actuator hydraulic cylinder is connected to the connecting plate and is fixedly connected to the horizontal support plate through the connecting plate.
4. The test rack of claim 1, further comprising a plurality of displacement limiting plates welded to the inside of the angle support frame for limiting displacement of the rectangular box.
5. The test rack of claim 1, further comprising an angle controller, the angle controller comprising a plumb pointer and a dial, the dial being fixed to the angle support frame, the pointer hanging from the dial at one end and free to drop at the other end.
6. The test rack of claim 5, wherein the dial is provided with 0-90 ° graduations.
7. The test rack of claim 1, wherein the upper surface of the horizontal support plate is provided with rectangular grooves corresponding to the angular actuators, a U-shaped horizontal support plate connection lug is arranged at the center of one end of the inner bottom surface of each rectangular groove, the plane end of the horizontal support plate connection lug is connected with the inner bottom surface of the rectangular groove, and the arc end is provided with a threaded through hole;
the angle actuator comprises an angle actuator bottom end connecting lug, an angle actuator actuating rod, an angle actuator hollow hydraulic actuating cylinder and an angle actuator top end connecting lug; the connecting lug piece at the bottom end of the angle actuator is U-shaped, the plane end is connected with the actuating rod of the angle actuator, the arc end is provided with a threaded through hole, and the hole center line is superposed with the center line of the threaded through hole of the connecting lug piece of the horizontal supporting plate; the connecting lug piece at the top end of the angle actuator is U-shaped, the plane end is connected with the hollow hydraulic actuating cylinder of the angle actuator, the arc end is provided with a threaded through hole, and the hole center line is superposed with the center line of the threaded through hole of the connecting lug piece of the angle support frame;
the two sides of the bottom surface of the angle support frame are connected with U-shaped angle support frame connection lugs which are used for being connected with the connection lugs at the top end of the angle actuator, and the arc end is provided with a threaded through hole.
8. The test rack of claim 7, wherein the rectangular recess has a width and a depth that are each 1.2 times the maximum diameter of the angular actuator.
9. The test rack of claim 1, wherein the angle support body is a hollow frame with four sides in an L-shape sized to fit the level support plate, and the underside of the long side is coaxial with the upper side of the long side of the level support plate.
10. The test rack of claim 1, wherein the plurality of attachment hinges each have a central axis of rotation, one half of the attachment hinges being attached to a side of the horizontal support plate and the other half being attached to a side of the angle support bracket, the plurality of attachment hinge axes being collinear and coincident with the line connecting the horizontal support plate and the angle support bracket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911248683.1A CN110979730B (en) | 2019-12-09 | 2019-12-09 | Height-adjustable and angle-adjustable rectangular box water hammer effect test support |
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| CN201911248683.1A CN110979730B (en) | 2019-12-09 | 2019-12-09 | Height-adjustable and angle-adjustable rectangular box water hammer effect test support |
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| CN110979730B CN110979730B (en) | 2023-10-20 |
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| CN115363321A (en) * | 2022-01-24 | 2022-11-22 | 温州医科大学 | Sports shoe shock absorption evaluation device and evaluation method |
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| CN110979730B (en) | 2023-10-20 |
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