High-speed dynamic impact test device for composite material

Abstract

The invention discloses a high-speed dynamic impact test device for a composite material, and relates to the technical field of impact test devices, the high-speed dynamic impact test device comprises a pendulum bob assembly and a mounting table, the mounting table is fixedly provided with the composite material, and the high-speed dynamic impact test device also comprises a horizontal transfer assembly for applying a horizontal force to the composite material under the impact of the pendulum bob assembly; and the horizontal transfer assembly slides on the mounting table in a limiting manner, and the detection end of the detection device faces the composite material. According to a traditional pendulum bob assembly, the stress of a composite material in the horizontal direction is calculated through the height, weight and angle of a pendulum bob, calculation is complex, the force is difficult to control, the device can obtain the horizontal impact force borne by the composite material by calculating the mass and speed of an impact plate, and the device is simple in structure and better in effect.

Description

Technical Field

[0001] The invention belongs to the technical field of impact test devices, and in particular relates to a high-speed dynamic impact test device for composite materials. Background Art

[0002] A composite material needs to be subjected to an impact test to ensure factory quality, measure the stress of the composite material, and judge the quality of the composite material by recording the speckle changes of the composite material itself.

[0003] However, current pendulum impact testing machines usually use the pendulum to directly impact the composite material itself. The impact force of the pendulum will be dispersed by gravity and is difficult to measure. Moreover, when the pendulum hits the material, it can often only hit a local area of ​​one end surface, which will cause uneven force on the material and affect the experimental results. Summary of the invention

[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a composite material high-speed dynamic impact test device to solve the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A composite material high-speed dynamic impact test device comprises a pendulum assembly and a mounting platform, wherein the composite material is fixedly mounted on the mounting platform, and further comprises a horizontal transfer assembly for applying a horizontal force to the composite material under the impact of the pendulum assembly, wherein the horizontal transfer assembly slides at an upper limit on the mounting platform, and further comprises a detection device with a detection end facing the composite material.

[0007] As a preferred technical solution, the horizontal transfer assembly includes an impact plate slidably mounted on the mounting table, and the contact end of the composite material and the impact plate is close to the swing end of the pendulum assembly.

[0008] As a preferred technical solution, the contact end of the composite material is in full contact with the impact plate.

[0009] As a preferred technical solution, the composite material is mounted on a mounting platform via a mounting plate, and the detection device includes a capture camera, which is mounted on the mounting platform directly below the composite material.

[0010] As a preferred technical solution, the horizontal transfer assembly includes a pulling block and connecting line 2, the two ends of connecting line 2 are respectively fixedly connected to the pulling block and the composite material, and the pulling block applies a horizontal force to the composite material away from the mounting plate through connecting line 2.

[0011] As an optimal technical solution, the pendulum assembly includes a pendulum, a connecting wire 1, a lifting plate and a driving device. The fixed end of the connecting wire 1 and the driving device are both installed on a mounting platform. The lifting plate is lifted and lowered relative to the composite material and the lifting plate is installed on the driving end of the driving device. The connecting wire 1 passes through the lifting plate and is fixedly connected to the pendulum.

[0012] As a preferred technical solution, it also includes a pulley, which is installed on the lifting plate, and the connecting line 1 passes around the pulley and is installed between the fixed end of the connecting line 1 and the contact end of the connecting line 1 and the lifting plate.

[0013] As a preferred technical solution, a fixed end of the connecting line is higher than the highest point of the lifting plate.

[0014] Beneficial Effects

[0015] The traditional pendulum assembly calculates the horizontal force on the composite material by the height, weight and angle of the pendulum. The calculation is complicated and the force is difficult to control. The device can obtain the horizontal impact force on the composite material by calculating the mass and speed of the impact plate. During the impact, the impact plate can completely hit one end face of the composite material, making the force more uniform.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a composite material high-speed dynamic impact test device proposed by the present invention Figure 1 ;

[0018] Figure 2 A schematic diagram of the structure of a composite material high-speed dynamic impact test device proposed by the present invention Figure 2 ;

[0019] Figure 3 This is a schematic structural diagram of a pendulum assembly of a composite material high-speed dynamic impact test device proposed by the present invention.

[0020] Figure numerals: 1. mounting plate; 2. composite material; 3. impact plate; 4. pendulum 1; 5. capture camera; 6. lifting plate; 7. connecting line 1; 8. connecting line 2; 9. pulling block; 10. pendulum 2; 11. mounting table; 12. support frame; 13. driving device; 14. pulley. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] Example 1

[0023] refer to Figures 1 to 3 A composite material high-speed dynamic impact test device described in this embodiment includes a mounting platform 11, a composite material 2 and a pendulum assembly. A mounting plate 1 and an impact plate 3 are installed on the mounting platform 11. The composite material 2 is fixedly mounted on the mounting plate 1. The impact plate 3 slides relative to the mounting plate 1. The pendulum 4 of the pendulum assembly swings freely and hits the impact plate 3. The impact plate 3 hits the composite material 2 horizontally. A detection device is installed directly below the composite material 2 and the detection end of the detection device faces the composite material 2.

[0024] Preferably, when the impact plate 3 impacts the composite material 2 , the contact end of the composite material 2 is completely in contact with the impact plate 3 .

[0025] Preferably, the detection device comprises a capture camera 5 , and a camera of the capture camera 5 is directed toward the composite material 2 .

[0026] Working principle: the pendulum 4 of the pendulum assembly hits the impact plate 3, and the impact plate 3 slides toward the composite material 2 under the impact force of the pendulum 4 until it hits the composite material 2. After the composite material 2 receives the horizontal and uniform impact force, speckles appear, and the capture camera 5 captures the speckle situation in real time.

[0027] The traditional pendulum assembly calculates the horizontal force on the composite material 2 by using the height, weight and angle of the pendulum 4. The calculation is complicated and the force is difficult to control. The present device can obtain the horizontal impact force on the composite material 2 by calculating the mass and speed of the impact plate 3. During the impact, the impact plate 3 can completely impact one end face of the composite material 2, making the force more uniform.

[0028] Example 2

[0029] refer to Figures 1 to 3 A composite material high-speed dynamic impact test device described in this embodiment includes a pulling block 9 slidably mounted on a mounting table 11, a connecting line 8 is installed between the pulling block 9 and the composite material 2, a pendulum 10 of the pendulum assembly pushes the pulling block 9 to slide in a direction away from the composite material 2, and the pulling block 9 applies a pulling force to the composite material 2 away from the mounting plate 1 through the connecting line 8, and a capture camera 5 facing the composite material 2 is installed below the composite material 2.

[0030] Preferably, the length of pendulum 2 10 is greater than that of pendulum 1 4 .

[0031] Working principle: The pendulum 10 swings freely until it collides with the pulling block 9. The pendulum 10 pushes the pulling block 9 to slide away from the composite material 2. The pulling block 9 applies a pulling force away from the mounting plate 1 to the composite material 2 through the connecting line 8. After the composite material 2 is subjected to the horizontal pulling force, speckles appear, and the capture camera 5 captures the speckle situation in real time.

[0032] Example 3

[0033] refer to Figures 1 to 3 In the present embodiment, a high-speed dynamic impact test device for composite materials is described. A support frame 12 is installed on a mounting platform 11. The support frame 12 is perpendicular to the mounting platform 11. A pendulum assembly is installed on the support frame 12. The pendulum assembly includes a pendulum, a connecting wire 7, a lifting plate 6, a pulley 14 and a driving device 13. The top of the connecting wire 7 is fixedly connected to the top of the support frame 12. The pulley 14 is installed on the lifting plate 6. A through hole is opened on the lifting plate 6. The connecting wire 7 bypasses the pulley 14 and extends through the through hole to be fixedly connected to the pendulum. The lifting plate 6 is installed on the output end of the driving device 13.

[0034] Preferably, the driving device 13 includes a motor and a screw rod, the screw rod is vertically mounted on the support frame 12, the screw rod is mounted on the output end of the motor, and the lifting plate 6 is threadedly connected to the screw rod.

[0035] The pendulum includes a pendulum 1 4 and a pendulum 2 10.

[0036] By changing the length of the pendulum rope, the impact force of the pendulum can be changed. Therefore, when the length of the pendulum rope needs to be changed, the motor of the driving device 13 drives the screw to rotate, and the screw drives the lifting plate 6 to rise and fall. When the lifting plate 6 rises, the length of the pendulum rope below the lifting plate 6 increases; when the lifting plate 6 falls, the length of the pendulum rope below the lifting plate 6 becomes shorter, and the total length of the connecting line 7 is inconvenient. The pulley 14 prevents the connecting line 7 from rubbing against the inner wall of the through hole to cause damage to the connecting line 7, so that the connecting line 7 slides more smoothly when the lifting plate 6 is raised and lowered, and the position of the pendulum remains unchanged.

[0037] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite material high-speed dynamic impact test device, comprising a pendulum assembly and a mounting platform (11), characterized in that: A composite material (2) is fixedly mounted on the mounting platform (11), and the mounting platform (11) also includes a horizontal transfer component that applies a horizontal force to the composite material (2) under the impact of the pendulum component, the horizontal transfer component slides at an upper limit on the mounting platform (11), and also includes a detection device with a detection end facing the composite material (2).

2. The composite material high-speed dynamic impact test device according to claim 1, characterized in that: The horizontal transfer assembly comprises an impact plate (3) slidably mounted on a mounting platform (11), and the contact end between the composite material (2) and the impact plate (3) is close to the swing end of the pendulum assembly.

3. The composite material high-speed dynamic impact test device according to claim 2, characterized in that: The contact end of the composite material (2) is in full contact with the impact plate (3).

4. The composite material high-speed dynamic impact test device according to claim 1, characterized in that: The composite material (2) is mounted on a mounting platform (11) via a mounting plate (1), and the detection device comprises a capture camera (5), wherein the capture camera (5) is mounted on the mounting platform (11) directly below the composite material (2).

5. The composite material high-speed dynamic impact test device according to claim 4, characterized in that: The horizontal transfer assembly comprises a pulling block (9) and a second connecting line (8), wherein two ends of the second connecting line (8) are respectively fixedly connected to the pulling block (9) and the composite material (2), and the pulling block (9) applies a horizontal force away from the mounting plate (1) to the composite material (2) via the second connecting line (8).

6. The composite material high-speed dynamic impact test device according to claim 1, characterized in that: The pendulum assembly comprises a pendulum, a connecting wire (7), a lifting plate (6) and a driving device (13); the fixed end of the connecting wire (7) and the driving device (13) are both mounted on a mounting platform (11); the lifting plate (6) is lifted relative to the composite material (2) and the lifting plate (6) is mounted on the driving end of the driving device (13); the connecting wire (7) passes through the lifting plate (6) and is fixedly connected to the pendulum.

7. The composite material high-speed dynamic impact test device according to claim 6, characterized in that: It also includes a pulley (14), which is installed on the lifting plate (6), the connecting line (7) passes around the pulley (14), and the pulley (14) is installed between the fixed end of the connecting line (7) and the contact end of the connecting line (7) and the lifting plate (6).

8. The composite material high-speed dynamic impact test device according to claim 6, characterized in that: The fixed end of the connecting line 1 (7) is higher than the highest point of the lifting plate (6).

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