CN110979730B - Height-adjustable and angle-adjustable rectangular box water hammer effect test support - Google Patents
Height-adjustable and angle-adjustable rectangular box water hammer effect test support Download PDFInfo
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- CN110979730B CN110979730B CN201911248683.1A CN201911248683A CN110979730B CN 110979730 B CN110979730 B CN 110979730B CN 201911248683 A CN201911248683 A CN 201911248683A CN 110979730 B CN110979730 B CN 110979730B
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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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- Aviation & Aerospace Engineering (AREA)
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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 is connected with the bottom end of the lifting actuator; the top end of the lifting actuator is fixedly connected with the horizontal supporting plate through a connecting plate; the angle support frame is connected with the horizontal height support plate through a connecting hinge, and the angle actuator is connected between the horizontal height support plate and the angle support frame. According to the invention, through adjusting the lifting actuator and the angle actuator, the adjustment of any height and the angle range of 0-90 degrees of the test box body can be realized, and a means can be provided for realizing the water hammer effect test of the impact simulation box body with different angles for high-speed fragmentation; the angle controller can realize the accurate control of the device angle, and has the advantages of simple operation and accurate control.
Description
Technical Field
The invention belongs to the technical field of damage evaluation and test, and particularly relates to a height-adjustable and angle-adjustable rectangular box body 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 of the fuel system. The water hammer effect is one of the main damage modes of an aircraft fuel tank, and refers to that when a high-speed fragment penetrates through the fuel tank filled with oil, the fragment receives resistance of fuel oil, and the kinetic energy of the fragment is transmitted to a fuel tank wall plate through the fuel oil, so that the fuel tank structure is damaged in a disastrous way.
Because of the inflammable and explosive properties of oil, the oil is not easy to control and is easy to be dangerous when being subjected to high-speed impact test, and therefore, water with similar density to the oil is often adopted to replace aviation kerosene in the test. Meanwhile, as the structure form of the fuel tank of the airplane is complex, the fuel tank is replaced and simulated by a rectangular tank body filled with water in the prior art. The experimental study of the water hammer effect of the equivalent aircraft fuel tank under the impact of the high-speed broken sheet mainly takes foreign matters, the research focus is mainly focused on the damage mechanism and influencing factors of the water hammer effect, for example, the American Ball and the like firstly carry out the experimental study of the water hammer effect through a 22mm caliber rifle and a cube liquid filling box body, the incidence angle and the quality of the broken sheet are pointed out as the main factors influencing the energy loss of the broken sheet, and the influence of the shape and the quality of the broken sheet on the penetration speed and the impact wave of the broken sheet is small; the Spanish Varas and the like carry out hydraulic aluminum pipe hydraulic hammer effect tests with the liquid filling rates of 50%, 75% and 100%, the influences of different breaking speeds (600 and 900 m/s) on the hydraulic hammer effect are compared, and the whole hydraulic hammer process is recorded by using a high-speed camera; the Nishida et al completed the striking test of aluminum alloy thin-walled square tubes, studied the way of crack propagation of the wallboard, and pointed out that the most dominant influencing factors were the highest strength of the wallboard material, the diameter of the bullet, etc. However, these are developed for a horizontally placed simulated oil tank, and do not involve the impact of different oil-gas penetration paths with fragments caused by the incident angle on the water hammer effect. In fact, under the condition of a real bullet, the high-speed breaking sheet is usually impacted into the oil tank at a certain angle, so that the water hammer effect is damaged. 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
First, the technical problem to be solved
The invention provides a height-adjustable and angle-adjustable rectangular box body water hammer effect test support, which aims to solve the technical problem of how to realize the incidence of high-speed fragments to rectangular box bodies at different angles so as to simulate the water hammer effect of an equivalent aircraft oil tank under the impact of fragments, and further provide support for the damage test and evaluation of an aircraft structure.
(II) technical scheme
In order to solve the technical problems, 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, wherein the support base is provided with a plurality of support grooves; 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 supporting plate through a connecting plate; the angle support frame is connected with the horizontal height support plate through a connecting hinge, and the angle actuator is connected between the horizontal height support plate and the angle support frame.
Further, the test support comprises a plurality of groups of support bases, lifting actuators and connecting plates, and the central lines of the support bases, the lifting actuators and the connecting plates are overlapped.
Further, the lifting actuator comprises a hollow hydraulic cylinder and a lifting actuator hydraulic rod which are connected, the upper surface of the supporting base is connected with the bottom end of the lifting actuator hydraulic rod, the top end of the lifting actuator hydraulic cylinder is connected with the connecting plate, and the lifting actuator hydraulic cylinder is fixedly connected with the horizontal supporting plate through the connecting plate.
Further, the test support further comprises a plurality of displacement limiting plates, wherein the displacement limiting plates are welded on the inner side of the angle support frame and used for limiting displacement of the rectangular box body.
Further, the test support further comprises an angle controller, the angle controller comprises a plumb pointer and a dial, the dial is fixed on the angle support frame, one end of the pointer is hung on the dial, and the other end of the pointer falls freely.
Further, the dial is provided with a scale of 0-90 degrees.
Further, rectangular grooves are formed in the upper surface of the horizontal height supporting plate, the positions of the rectangular grooves correspond to those of 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 each horizontal height supporting plate connecting lug is connected with the inner bottom surface of each rectangular groove, and a threaded through hole is formed in the arc-shaped end of each horizontal height supporting plate connecting lug;
the angle actuator comprises an angle actuator bottom connecting lug, an angle actuator actuating rod, an angle actuator hollow hydraulic actuating cylinder and an angle actuator top connecting lug; the bottom end connecting lug of the angle actuator is U-shaped, the plane end is connected with the angle actuator actuating rod, the arc-shaped end is provided with a threaded through hole, and the center line of the hole coincides with the center line of the threaded through hole of the connecting lug of the horizontal height supporting plate; the connecting lug at the top end of the angle actuator is U-shaped, the plane end of the connecting lug is connected with the hollow hydraulic actuating cylinder of the angle actuator, the arc-shaped end of the connecting lug is provided with a threaded through hole, and the center line of the hole is overlapped with the center line of the threaded through hole of the connecting lug 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 connecting lugs which are used for being connected with the connecting lugs at the top end of the angle actuator, and the arc-shaped end is provided with a threaded through hole.
Further, the width and depth of the rectangular groove are 1.2 times of the maximum diameter of the angle actuator.
Further, the angle support frame main body is a hollow frame, four sides are L-shaped, the size is matched with the horizontal height support plate, and the lower side of the long side is coaxial with the upper side of the long side of the horizontal height support plate.
Further, the connecting hinges are multiple, each connecting hinge takes the central line as a movable rotating shaft, one half of the connecting hinges are connected with the side face of the horizontal height supporting plate, the other half of the connecting hinges are connected with the side face of the angle supporting frame, and the connecting hinges are collinear in rotating shafts and coincide with connecting lines of the horizontal height supporting plate and the angle supporting frame.
(III) beneficial 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 is connected with the bottom end of the lifting actuator; the top end of the lifting actuator is fixedly connected with the horizontal supporting plate through a connecting plate; the angle support frame is connected with the horizontal height support plate through a connecting hinge, and the angle actuator is connected between the horizontal height support plate and the angle support frame.
The technical effects of the invention are as follows:
1. the lifting actuator and the angle actuator are adjusted, so that the test box body can be adjusted to any height and 0-90 degrees, and a means can be provided for realizing the water hammer effect test of the high-speed burst impact simulation box body with different angles;
2. the angle controller can realize the accurate control of the device angle, and has the advantages of simple operation and accurate control.
Drawings
FIG. 1 is a schematic view of a test stand structure according to an embodiment of the present invention;
FIG. 2 is a front view of a web structure in accordance with an embodiment of the invention;
FIG. 3 is a top view of the body structure of the horizontal height support plate in an embodiment of the present invention;
FIG. 4 is an isometric view of an angle actuator structure in accordance with an embodiment of the invention;
FIG. 5 is an isometric view of an angled support structure in accordance with an embodiment of the present invention;
FIG. 6 is a front view of the angle controller structure in an embodiment of the present invention;
FIG. 7 is a schematic illustration of a test stand test of an embodiment of the present invention.
In the figure, 1, a support base, 2, a lifting actuator, 2-1, a lifting actuator hollow hydraulic cylinder, 2-2, a lifting actuator hydraulic rod, 3, a connecting plate, 3-1, a connecting plate threaded hole, 4, a horizontal height supporting plate, 4-1, a horizontal height supporting plate threaded hole, 4-2, a groove, 4-3, a horizontal height supporting plate connecting lug, 5, an angle actuator, 5-1, an angle actuator bottom connecting lug, 5-2, an angle actuator hydraulic rod, 5-3, an angle actuator hollow hydraulic cylinder, 5-4, an angle actuator top connecting lug, 6, an angle supporting frame, 6-1, an angle supporting frame connecting lug, 7, a connecting hinge, 8, a displacement limiting plate, 9, an angle controller, 9-1, a pointer, 9-2, 10, a rectangular oil tank and 11.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
The embodiment provides a height-adjustable and angle-type rectangular box water hammer effect test support, the structure of which is shown in a figure 1, and the test support comprises a support base 1, a lifting actuator 2, a connecting plate 3, a horizontal height 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 support base 1 is a square metal material flat plate, 4 plates are counted, the lower surface is horizontally placed in contact with the ground, and the upper surface is welded with the bottom end of a hydraulic rod of a lifting actuator of the lifting actuator 2.
The total number of the lifting actuators 2 is 4, the size is determined according to the height required by 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 a connecting plate 3, and the lifting actuators are fixedly connected with a horizontal height supporting plate 4 through the connecting plate 3 through bolts.
As shown in fig. 2, the connecting plates 3 are square metal material flat plates, 4 plates are arranged according to a matrix of 2×2, any side of the matrix is parallel to the outer line of the horizontal supporting plate 4, each connecting plate 3 is provided with 4 threaded through holes 3-1, and the connecting plates are connected with the horizontal supporting plate 4 through the lifting actuators 2 in a bolt connection mode according to the matrix of 2×2.
The central lines of each group of supporting base 1, lifting actuator 2 and connecting plate 3 are coincident.
The main body of the horizontal height supporting plate 4 is a thick metal plate, 16 threaded through holes 4-1 of the horizontal height supporting plate are formed in the plate, each 4 threaded through holes are a group, are positioned at four corners of the horizontal height supporting plate 4, and are in one-to-one correspondence with the size and the position of the threaded holes of the connecting sheet 3.
As shown in fig. 3, two rectangular grooves 4-2 are formed on the upper surface of the horizontal supporting plate 4, and are respectively located near the short sides of the horizontal supporting 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 supporting plate 4, and the width and the depth of the rectangular grooves 4-2 are 1.2 times of the maximum diameter of the angle actuator 2. Two U-shaped horizontal support 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 support 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-shaped end.
As shown in FIG. 4, 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 actuating cylinder 5-3 and two angle actuator top connecting lugs 5-4. Wherein, angle actuator bottom connection lug 5-1 is "U" shape, and the plane end welds with angle actuator actuating lever 5-2, and 1 screw thread through-hole has been seted up to the arc end, and the hole central line coincides with the screw thread through-hole central line of horizontal altitude backup pad connection lug 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 actuator cylinder 5-3 of the angle actuator, a threaded through hole is formed in the arc-shaped end, and the center line of the hole coincides 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 6 is a hollow frame made of metal material, four sides of the angle support are L-shaped, the dimensions of the angle support are matched with those of the horizontal support plate 4, the lower side of the long side of the angle support is coaxial with the upper side of the long side of the horizontal support plate 4, and the angle support is connected with the horizontal support plate 4 through a connecting hinge 7. Two U-shaped angle support frame connecting lugs 6-1 are welded on two sides of the bottom surface of the angle support frame 6 and are used for being connected with connecting lugs 5-4 at the top end of an angle actuator, and a threaded through hole is formed in the arc-shaped end.
The connecting hinges 7 are three in total, each uses the central line as a movable rotating shaft, one half of the connecting hinges are welded with the side surface of the horizontal height supporting plate 4, the other half of the connecting hinges are welded with the side surface of the angle supporting frame 6, and the rotating shafts of the three connecting hinges 7 are collinear and coincide with the connecting lines of the horizontal height supporting plate 4 and the angle supporting frame 6.
The displacement limiting plates 8 are four in number and welded to the inner sides of four corners of the angle support frame 6 respectively, and each displacement limiting plate 8 is L-shaped and is used for limiting the displacement of the rectangular box body.
As shown in fig. 6, the angle controller 9 includes a plumb pointer 9-1 and a semicircular scale 9-2 having 0 to 90 degrees, one end of the pointer 9-1 is hung on the scale 9-2 by a steel nail, and the other end is freely dropped. The plane end of the dial 9-2 is welded on the bottom surface of the angle support frame 6.
Fig. 7 is a front view showing a water hammer effect test of a water filled rectangular box body by using the test stand of the present embodiment, in which a full water rectangular simulated oil tank 10 with a size of 1600mm×800mm×500mm is placed on an angle support frame of the present embodiment, a lifting actuator is adjusted to 0.8m, the angle actuator is adjusted to 30 degrees by an angle controller, and a high-speed broken piece 11 with a diameter of 5mm×6.5mm is impacted at a speed of 1000 m/s.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (3)
1. The utility model provides a height-adjustable and angle type rectangular box water hammer effect test support, includes support base (1), lift actuator (2), connecting plate (3), level support board (4), angle actuator (5), angle support frame (6), connecting hinge (7), displacement limiting board (8) and angle controller (9); it is characterized in that the method comprises the steps of,
the angle support frame (6) is used for placing a tested rectangular oil tank (10), and the support base is fixedly placed on the ground;
the upper surface of the supporting base (1) is fixedly connected with the bottom end of the lifting actuator (2);
the top end of the lifting actuator (2) is fixedly connected with the horizontal height supporting plate (4) through the connecting plate (3);
the main body of the angle support frame (6) is a hollow frame, four sides of the angle support frame are L-shaped, and angle support frame connecting lugs (6-1) are welded on the angle support frame; the angle support frame (6) is connected with the horizontal height support plate (4) through the connecting hinge (7) and the angle actuator (5), so that the angle support frame (6) can rotate in a range of 0-90 degrees relative to the horizontal height support plate (4);
the upper surface of the horizontal height supporting plate (4) is provided with a horizontal height supporting plate threaded hole (4-1), a rectangular groove (4-2) and a horizontal height supporting plate connecting lug (4-3), the position of the rectangular groove (4-2) corresponds to that of the angle actuator (6), the center of one end of the inner bottom surface of each rectangular groove (4-2) is provided with a U-shaped horizontal height supporting plate connecting lug (4-3), the plane end of the horizontal height supporting plate connecting lug (4-3) is connected with the inner bottom surface of the rectangular groove, and the arc-shaped end is provided with a threaded through hole;
the cross section of the displacement limiting plate (8) is L-shaped, the height of the displacement limiting plate is matched with that of the rectangular oil tank (10), and the displacement limiting plate comprises a plurality of displacement limiting plates which are fixedly connected to the inner side of the angle support frame (6);
the angle controller (9) comprises a plumb pointer (9-1) and a dial (9-2), wherein the dial (9-2) is provided with 0-90 degree scales and is fixed on the angle support frame (9), one end of the plumb pointer (9-1) is hung on the dial (9-2), and the other end of the plumb pointer freely drops.
2. The adjustable-height and angle type rectangular box body water hammer effect test support according to claim 1, wherein the width and depth of the rectangular groove (4-2) on the horizontal height supporting plate (4) are 1.2 times of the maximum diameter of the angle actuator (6).
3. A height-adjustable and angle-adjustable rectangular box water hammer effect test support according to claim 1, wherein the support base (1), the lifting actuator (2) and the connecting plate (3) comprise a plurality of groups, and the central lines of the support base (1), the lifting actuator (2) and the connecting plate (3) of each group are coincident; the connecting hinges (7) are multiple, each connecting hinge (7) takes a central line as a movable rotating shaft, one half of the connecting hinges are connected with the side face of the horizontal height supporting plate (4), the other half of the connecting hinges are connected with the side face of the angle supporting frame (6), and the connecting hinges are collinear in rotating shafts and coincide with connecting lines of the horizontal height supporting plate (4) and the angle supporting frame (6).
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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 true CN110979730B (en) | 2023-10-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112061418A (en) * | 2020-05-19 | 2020-12-11 | 中国飞机强度研究所 | Curved plate impact supporting device |
| CN115363321B (en) * | 2022-01-24 | 2024-01-12 | 温州医科大学 | Damping evaluation device and method for sports shoes |
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