A kind of elastic class conical structure composite load loading device and method for using

Abstract

The application is suitable for the technical field of missile conical structure load loading test, and provides a missile conical structure composite load loading device and a use method.The device comprises a connecting plate, a connecting seat is installed on the connecting plate, and the connecting plate is threadedly connected with a test piece through a connecting bolt, so that the test piece is fixed, and the connecting plate can be fixedly installed on a test table through a plurality of fixing bolts, so that the stability is higher; meanwhile, a bearing frame fixes the test piece through a fitting platform one and a fitting platform two, wherein a chamfer one and a chamfer two are arranged on the fitting platform one and the fitting platform two respectively, so that the test piece is prevented from being damaged; meanwhile, a plurality of gravity weights are installed on the upper surface of the bearing frame through connecting columns, so that the weight of the bearing frame is adjusted, and the detection is more accurate; and joints A, B, C and D fixed on the fitting platform one and the fitting platform two are used to apply a load, so that the test piece is loaded, and the test precision is higher, and the device is more worthy of promotion and use.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of missile conical structure load loading test, and particularly relates to a missile conical structure composite load loading device and a use method. BACKGROUND

[0002] In the current technical field of missile conical structure load loading test, with the development of weapon equipment technology, the missile conical structure needs to be tested for the strength of the conical structure and the hyperbolic shell structure, and a missile conical structure load loading device needs to be used in the process.

[0003] The utility model patent with the publication number CN205449645U discloses a missile cover shear test loading ring structure, which comprises a loading ring, a steel wire rope and a buckle. The buckle is provided with a groove, and the buckle is fixed on the outer side of the side wall of the loading ring through screws. The groove on the buckle and the outer side of the side wall of the loading ring form a rope passing hole for the steel wire rope to pass through. The steel wire rope is movably arranged in the rope passing hole. The steel wire rope is limited on the outer side of the loading ring by the buckle, and then the buckle is fixed on the loading ring by screws. The steel wire rope can freely rotate and move in the rope passing hole between the buckle and the loading ring. Then, the whole loading ring is sleeved on the missile cover to perform the loading test.

[0004] However, the above patent has the following disadvantages:

[0005] 1. In the above patent, the loading ring is sleeved on the missile cover, and the load is applied on the back of the loading ring by the steel wire rope. The missile cover has fewer stress points and uneven stress, and the detection accuracy is poor.

[0006] 2. The above patent and the commonly used detection method use contact methods such as sleeving. Since the outer wall of the missile cover or the missile conical body is relatively smooth, the loading ring is easy to fall off when the force is applied, the safety is poor, and the missile cover or the missile conical body is damaged. SUMMARY

[0007] The present application provides a missile conical structure composite load loading device and a use method, which aims to solve the problem of poor detection accuracy and easy falling off of the loading ring when the load is applied on the back of the loading ring by the steel wire rope.

[0008] The present application is implemented as follows: a conical structure composite load loading device comprises a force bearing frame.

[0009] A fitting platform one and a fitting platform two are arranged on the inner wall of the force bearing frame.

[0010] The fitting platform one and the fitting platform two are arranged longitudinally on the inner wall of the force bearing frame.

[0011] The outer wall of the first and second fitting platforms is provided with a plurality of connecting rings, which are evenly distributed on the outer wall of the first and second fitting platforms.

[0012] The outer wall of the first fitting platform is detachably connected with two joints C and two joints D through a plurality of connecting rings.

[0013] The outer wall of the second fitting platform is detachably connected with two joints A and two joints B through a plurality of connecting rings; in this scheme, the force bearing frame contacts the test piece through the first and second fitting platforms, and simultaneously applies a load force to the test piece by using the joints A, B, C and D, so that the force is more evenly distributed.

[0014] Preferably, the inner wall of the first and second fitting platforms is respectively provided with a chamfer one and a chamfer two; in this scheme, the chamfer one and the chamfer two can prevent scratching the outer surface of the test piece.

[0015] Preferably, it further comprises a connecting plate, the upper surface of the connecting plate is fixedly installed with an annular connecting seat, a plurality of threaded holes are formed in the outer wall of the connecting seat, and the plurality of threaded holes are evenly distributed on the connecting seat.

[0016] Preferably, it further comprises a conical test piece, which is fixedly installed on the connecting seat by connecting bolts.

[0017] And the outer wall of the test piece abuts against the chamfer one and the chamfer two; in this scheme, the test piece is fixed by connecting bolts, and the stability is higher.

[0018] Preferably, a plurality of fixing bolts are threadedly installed on the connecting plate, and the plurality of fixing bolts are arranged on the four corners of the connecting plate; in this scheme, the connecting plate is fixedly connected to the workbench by a plurality of fixing bolts, so that the workbench is prevented from moving during the load test.

[0019] Preferably, a connecting column is fixedly installed on the upper surface of the force bearing frame.

[0020] A plurality of gravity weights are sleeved on the connecting column, and the connecting column movably connects the plurality of gravity weights; in this scheme, the weight of the force bearing frame is adjusted by adjusting the weight of the gravity weight, and the test variable is adjusted.

[0021] The application also provides a use method of the composite load loading device with a bullet-shaped conical structure, which comprises the following steps:

[0022] Step one, the test piece is fixedly installed on the connecting seat by the connecting bolts.

[0023] Step 2: The load-bearing frame is sleeved on the outer wall of the test piece, and the loading part of the test piece is glued to the first and second bonding platforms on the load-bearing frame through adhesive film;

[0024] Step 3: Connect the joints A, B, C and D of the test piece to the load source, the load force of the joint A is recorded as +Fx1, the load force of the joint B is recorded as -Fx2, the load force of the joint C is recorded as -Fx, and the load force of the joint D is recorded as -Fx3.

[0025] Compared with the prior art, the beneficial effects of the present invention are: a composite load loading device with a cone-shaped structure and a method of use of the present invention,

[0026] 1. A connecting seat is installed on the connecting plate, and the test piece is connected by connecting and connecting bolts, which is convenient for fixing the test piece. At the same time, the connecting plate can be fixed on the test bench by multiple fixing bolts, which has higher stability;

[0027] 2. The load-bearing frame fixes the test piece through the laminating platform 1 and the laminating platform 2. The laminating platform 1 and the laminating platform 2 are respectively provided with chamfer 1 and chamfer 2 to prevent damage to the test piece. At the same time, multiple gravity weights are installed on the upper surface of the load-bearing frame through connecting columns to facilitate the adjustment of the weight of the load-bearing frame and make the test more accurate.

[0028] 3. Use joints A, B, C and D on the bonding platform 1 and the bonding platform 2 to apply load, and then apply load to the test piece. Multi-point application has higher test accuracy and is more worthy of promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The main view of the present invention as a whole

[0030] Figure 2 A top view of the present invention as a whole

[0031] Figure 3 A cross-sectional view of the present invention as a whole

[0032] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle

[0033] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle

[0034] Figure 6 For the present invention Figure 3 Enlarged view of point C in the middle

[0035] In the picture:

[0036] 1. Connecting plate; 2. Connecting bolts; 3. Connector A; 4. Connector B; 5. Connector C; 6. Connector D; 7. Load-bearing frame; 8. Gravity weight; 9. Test piece; 10. Connecting seat; 11. Connecting column; 12. Fixing bolts; 13. Fitting platform 1; 14. Chamfer 1; 15. Fitting platform 2; 16. Chamfer 2; 17. Connecting ring. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] See also Figures 1-6The application provides a technical scheme: a compound load loading device with a bullet-shaped conical structure and a use method, which comprises a bearing frame 7, a fitting platform I 13 and a fitting platform II 15 are arranged on the inner wall of the bearing frame 7, the fitting platform I 13 and the fitting platform II 15 are arranged longitudinally on the inner wall of the bearing frame 7, a plurality of connecting rings 17 are arranged on the outer walls of the fitting platform I 13 and the fitting platform II 15, the plurality of connecting rings 17 are uniformly distributed on the outer walls of the fitting platform I 13 and the fitting platform II 15, two joints C 5 and two joints D 6 are detachably connected to the outer wall of the fitting platform I 13 through the plurality of connecting rings 17, and two joints A 3 and two joints B 4 are detachably connected to the outer wall of the fitting platform II 15 through the plurality of connecting rings 17.

[0043] The joints A 3, the joints B 4, the joints C 5 and the joints D 6 are externally connected to a load source, and a load force is applied to the test piece 9, wherein the load source is a conventional hydraulic actuator or an electric cylinder, and the load loading product is commonly used, and the load directions of the four joints can be adjusted in a forward direction or a reverse direction as required; the load size and direction are controlled by using a commonly used MTS or MOOG controller.

[0044] The inner walls of the fitting platform I 13 and the fitting platform II 15 are respectively provided with a chamfer I 14 and a chamfer II 16, and the outer wall of the test piece 9 abuts against the chamfer I 14 and the chamfer II 16.

[0045] In addition, the chamfer I 14 and the chamfer II 16 abut against the outer wall of the test piece 9, so that the loading part of the test piece 9 is glued to the bearing frame 7 through a glue film, and damage to the test piece 9 is prevented.

[0046] Further comprising a connecting plate 1, an annular connecting seat 10 is fixedly installed on the upper surface of the connecting plate 1, a plurality of threaded holes are formed in the outer wall of the connecting seat 10, the plurality of threaded holes are uniformly distributed on the connecting seat 10, the test piece 9 is fixedly installed on the connecting seat 10 through connecting bolts 2, a plurality of fixing bolts 12 are threadedly installed on the connecting plate 1, and the plurality of fixing bolts 12 are arranged on the four corners of the connecting plate 1.

[0047] In addition, the connecting plate 1 supports the test piece 9 through the connecting seat 10, and the test piece 9 is fixed by using the plurality of connecting bolts 2, so that the test piece 9 is convenient to disassemble, and the fixing bolts 12 can fix the connecting plate 1, so that the connecting plate 1 is prevented from being vibrated under stress, and the test precision is reduced.

[0048] A connecting column 11 is fixedly installed on the upper surface of the bearing frame 7, a plurality of gravity weights 8 are sleeved on the connecting column 11, and the connecting column 11 movably connects the plurality of gravity weights 8.

[0049] Specifically, the gravity weights 8 movably connect the connecting column 11, so that the gravity weights 8 are convenient to take off or put on, the weight of the bearing frame 7 is adjusted by using the plurality of gravity weights 8, and then the experimental variable is controlled.

[0050] A method for using a composite load loading device having a projectile-like conical structure, comprising the following steps:

[0051] Step 1: The test piece 9 is fixed on the connecting seat 10 by the connecting bolts 2;

[0052] In this step, the test piece 9 is fixed to the connection seat 10 using the connection bolts 2 .

[0053] Step 2: The load-bearing frame 7 is mounted on the outer wall of the test piece 9, and the loading portion of the test piece 9 is bonded to the first bonding platform 13 and the second bonding platform 15 on the load-bearing frame 7 via adhesive film;

[0054] In this step, the test piece 9 is supported by bonding platform 13 and bonding platform 2 15, and a coordinate system is established inside the test piece 9. The coordinates of joint A3 are (x1, y1, z1), the coordinates of joint B4 are (x2, y2, z2), the coordinates of joint C5 are (x3, y3, z3), and the coordinates of joint D6 are (x4, y4, z4).

[0055] Step 3: Connect joints A3, B4, C5, and D6 of specimen 9 to the load source. The load force of joint A3 is recorded as +Fx1, the load force of joint B4 is recorded as -Fx2, the load force of joint C5 is recorded as -Fx, and the load force of joint D6 is recorded as -Fx3.

[0056] In this step, you can combine loading through two or more joint points. The load magnitude and direction are calculated as follows:

[0057] F 合x =F 1x +F 2x +F 3x +F 4x Formula 1

[0058] F 合y =F 1y +F 2y +F 3y +F 4y Formula 2

[0059] F 合z =F 1z +F 2z +F 3z +F 4z Formula 3

[0060] ΔM x =F 合y ×X 合z +F 合z ×X 合x -F 1y ×X 1z -F 1z ×X1x -F 2y ×X 2z -F 2z ×X 2x -F 3y ×X 3z -F 3z ×X 3x -F 4y ×X 4z -F 4z ×X 4x =0

[0061] Formula 4

[0062] ΔM y =F 合x ×X 合z +F 合y ×X 合z -F 1x ×X 1z -F 1y ×X 1z -F 2x ×X 2z -F 2y ×X 2z -F 3x ×X 3z -F 3y ×X 3z -F 4x ×X 4z -F 4y ×X 4z =0

[0063] Formula 5

[0064] ΔM z =F 合x ×X 合y +F 合y ×X 合x -F 1x ×X 1y -F 1y ×X 1x -F 2x ×X 2y -F 2y ×X 2x -F 3x ×X 3y -F 3y ×X 3x -F 4x ×X 4y -F 4y ×X 4x =0

[0065] Formula 6

[0066] In the formula: F合 Represents the resultant force, F 合x 、F 合y 、F 合z They represent the components of the resultant force on the x, y, and z axes, respectively. 1x 、F 1y 、F 1z They represent the x-, y-, and z-axis components of the load F1 at joint A, respectively. 2x 、F 2y 、F 2z They represent the x-, y-, and z-axis components of the load F2 at joint B, respectively. 3x 、F 3y 、F 3z They represent the x-, y-, and z-axis components of the load F3 at joint C, respectively. 1x 、X 1y 、X 1z Represents the x, y, and z coordinates of joint A, respectively. 2x 、X 2y 、X 2z Represent the x, y, and z coordinates of joint B, respectively. 3x 、X 3y 、X 3z Represent the x, y, and z coordinates of joint C, ΔM x It represents the difference between the torque of the resultant force point on a certain axis and the torque of the four joint points on the corresponding axis.

[0067] When applying Fy and Fz, different loading joints can be selected. The calculation method of load size and direction is consistent with the above formula.

[0068] Reference Figure 1 When applying Mx, the joints can be loaded through joints A and B. The calculation method of load size and direction is:

[0069] F 1z +F 2z =0 Formula 7

[0070] M x =F 1z ×Y 1x +F 2z ×Y 2x Formula 8

[0071] Reference Figure 1 When My is applied, it can be achieved by loading the joints through joints C and D. The calculation method of load size and direction is:

[0072] F 3x +F 4x =0 Formula 9

[0073] M y =F 3xX 3x F 4x X 3x Formula 10

[0074] Referring to Figure 1 , 3 , when Mz is applied, the joint loading joint can be realized through joint A, joint B, and the calculation method of the load size and direction is as follows:

[0075] F 1x F 2x =0 Formula 11

[0076] M z = F 1x X Y 1x F 2x X Y 2x Formula 12

[0077] The working principle and use process of the present application are as follows: Figures 1-6 The test piece 9 is fixedly installed on the connecting seat 10 through the connecting bolt 2, the chamfer one 14 and the chamfer two 16 abut against the outer wall of the test piece 9, the loading part of the test piece 9 is glued to the 7 bearing frame through the adhesive film, the test piece 9 is prevented from being damaged, the joint A 3, the joint B 4, the joint C 5 and the joint D 6 are externally connected to the load source, the test piece 9 is applied with the loading force, and the test piece 9 is tested.

[0078] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A composite load loading device for a projectile-like conical structure, characterized by: It comprises a load-bearing frame (7); a first laminating platform (13) and a second laminating platform (15) are provided on the inner wall of the load-bearing frame (7); The laminating platform 1 (13) and the laminating platform 2 (15) are arranged longitudinally on the inner wall of the load-bearing frame (7); A plurality of connecting rings (17) are provided on the outer walls of the bonding platform 1 (13) and the bonding platform 2 (15), and the plurality of connecting rings (17) are distributed on the outer walls of the bonding platform 1 (13) and the bonding platform 2 (15); Two connectors C (5) and two connectors D (6) are detachably connected to the outer wall of the bonding platform 1 (13) via a plurality of connecting rings (17); The outer wall of the second bonding platform (15) is detachably connected to two connectors A (3) and two connectors B (4) via a plurality of connecting rings (17); The inner walls of the bonding platform 1 (13) and the bonding platform 2 (15) are respectively provided with a chamfer 1 (14) and a chamfer 2 (16); The first chamfer (14) and the second chamfer (16) contact the outer wall of the test piece (9), and the loading portion of the test piece (9) is glued to the load-bearing frame (7) via a glue film; A connecting column (11) is fixedly mounted on the upper surface of the load-bearing frame (7); A plurality of gravity weights (8) are mounted on the connecting column (11), and the connecting column (11) is movably connected to the plurality of gravity weights (8).

2. The projectile-like conical structure composite load loading device according to claim 1, characterized in that: It also includes a connecting plate (1), on the upper surface of which an annular connecting seat (10) is fixedly mounted, and an outer wall of the connecting seat (10) is provided with a plurality of threaded holes, and the plurality of threaded holes are evenly distributed on the connecting seat (10).

3. The device for loading a composite load with a cone-shaped structure of a projectile as claimed in claim 2, characterized in that: The test piece (9) is fixedly mounted on the connecting seat (10) via connecting bolts (2); Furthermore, the outer wall of the test piece (9) abuts against the first chamfer (14) and the second chamfer (16).

4. The projectile-like conical structure composite load loading device according to claim 3, characterized in that: A plurality of fixing bolts (12) are threadedly mounted on the connecting plate (1), and the plurality of fixing bolts (12) are arranged on the four corners of the connecting plate (1).

5. A method for using the projectile-like cone-shaped composite load loading device according to any one of claims 1 to 4, comprising the following steps: Step 1: The test piece (9) is fixedly mounted on the connecting seat (10) by means of connecting bolts (2); Step 2: The load-bearing frame (7) is mounted on the outer wall of the test piece (9), and the loading portion of the test piece (9) is glued to the first bonding platform (13) and the second bonding platform (15) on the load-bearing frame (7) through a glue film; Step 3. Connect the test piece (9) joints A (3), B (4), C (5) and D (6) to the load source. The load force of joint A (3) is recorded as +Fx1, the load force of joint B (4) is recorded as -Fx2, the load force of joint C (5) is recorded as -Fx, and the load force of joint D (6) is recorded as -Fx3.

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