Video signal generating component vibration test fixture

Abstract

The utility model discloses a kind of video signal generation component vibration test tool, belong to vibration test tool technical field.The vibration test tool includes: bottom plate, fixed hole is equipped on it;Front end clamping assembly, comprising: front fixed base plate, mounting hole is opened on it, and is located on bottom plate;Movable clamping plate, at least two, opposite on the side surface of front fixed base plate, both are connected by first fastener;Each movable clamping plate can be enclosed into the clamping hole coaxial with the center of mounting hole.The bottom plate of the new type is fixed on vibration platform, and the mounting hole arranged on front fixed base plate is used to install video signal generation component;Since the end diameter of the front end of video signal generation component is smaller, therefore, the end of video signal generation component can be fixed by movable clamping plate;Through the use of the vibration test tool, video signal generation component can be fixedly stable on vibration platform when testing, avoid the influence normal test operation when installation is not firm during testing.

Description

Technical Field

[0001] This utility model belongs to the field of vibration testing fixture technology, specifically relating to a vibration testing fixture for a video signal generation component. Background Technology

[0002] The video signal generation component is one of the important components of missiles with television guidance, scene matching guidance, and fiber optic guidance.

[0003] During missile launch and flight, factors such as engine exhaust noise, high-speed flight aerodynamic noise, and engine thrust pulsation can cause vibrations. Therefore, vibration resistance becomes one of the key indicators for evaluating the quality of video signal generation components. If the vibration resistance is poor, problems such as loosening, circuit breaks or short circuits, and optical component displacement may occur during use, affecting the normal generation and transmission of video signals, leading to a decrease in missile guidance accuracy or even guidance failure.

[0004] Before leaving the factory, the video signal generation component undergoes vibration testing simulating the actual operating environment of a missile. The component is secured using fixtures and then mounted on a vibration platform for testing. However, existing vibration fixtures only secure one end of the component to the fixture with screws. During vibration testing, the screws may loosen, causing the video signal generation component to fall off, damaging the product and affecting normal vibration testing. Utility Model Content

[0005] This invention provides a vibration testing fixture for a video signal generation component to solve the aforementioned technical problems. To solve the above technical problems, the present invention adopts the following technical solution: A vibration testing fixture for a video signal generation component includes: a base plate with a fixing hole thereon; a front clamping assembly including: a front fixing base plate with a mounting hole thereon and disposed on the base plate; at least two movable clamping plates, disposed opposite each other on the side of the front fixing base plate, and connected by a first fastener; each of the movable clamping plates can form a clamping hole coaxial with the center of the mounting hole.

[0006] Furthermore, when each of the movable clamping plates moves toward the mounting hole and clamps onto the video signal generating component, the diameter of the clamping hole may be smaller than the diameter of the mounting hole.

[0007] Furthermore, the front clamping assembly also includes: a nut block, which is disposed on both sides of the front fixed base plate; an adjusting rod, which passes through the nut block and is threadedly connected to it; rotating the adjusting rod can move the adjusting rod away from or against the movable clamping plate.

[0008] Furthermore, the front clamping assembly also includes: a guide bar disposed on the front fixed base plate, with both having the same length direction; the inner side of the guide bar is connected to the upper and lower sides of each of the movable clamping plates respectively.

[0009] Furthermore, the front fixed base plate is perpendicular to the base plate; the adjusting rod is perpendicular to the side of the movable clamping plate; and the adjusting rod is parallel to the guide bar.

[0010] Furthermore, the vibration testing fixture also includes a rear clamping assembly, comprising: a rear fixing plate, disposed opposite to the front fixing plate at both ends of the base plate; and a locking hole disposed on the rear fixing plate; the rear fixing plate and the front fixing plate are arranged parallel to each other.

[0011] Furthermore, the rear clamping assembly further includes a second fastener disposed on the rear fixing base plate; the second fastener is located outside the locking hole.

[0012] Furthermore, the vibration testing fixture also includes a connecting plate, the two ends of which are connected to the front fixed base plate and the rear fixed base plate, respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The base plate is used to fix it on the vibration platform, and the mounting holes on the front fixed base plate are used to insert the video signal generating component. Since the end diameter of the front end of the video signal generating component is small, the end of the video signal generating component can be fixed by the movable clamping plate. By using this vibration test fixture, the video signal generating component can be fixed and securely placed on the vibration platform during the test, avoiding the impact of unstable installation on normal test operations.

[0014] 2. The sliding groove on the movable clamping plate allows for small-scale adjustments of the movable clamping plate relative to the front fixed base plate, making it convenient to use; the adjustable rod allows it to rotate relative to the nut block. When the movable clamping plate is locked on the outside of the video signal generation component, the adjustable rod can be rotated to press against the side of the movable clamping plate, thereby making the video signal generation component more securely fixed on the vibration test fixture, facilitating vibration testing.

[0015] 3. The rear clamping component is used in conjunction with the front clamping component to better fix the video signal component on the fixture; specifically, the card hole and the second fastener on the rear fixing plate match the rear structure of the video signal generating component to facilitate its fixation.

[0016] 4. The connecting plate is connected to the front fixed base plate and the rear fixed base plate at both ends, which makes the front fixed base plate and the rear fixed base plate on the base plate more stable and prevents the front fixed base plate and the rear fixed base plate from loosening during vibration testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the three-dimensional views of this utility model.

[0019] Figure 2 This is the second perspective view of the present invention.

[0020] Figure 3 This is the third perspective view of the present invention (lacking the movable clamping plate).

[0021] Figure 4 This is the front view of the present invention.

[0022] Figure 5 This is the left view of the present invention.

[0023] Reference numerals: 1-base plate, 11-fixing hole, 2-front clamping assembly, 21-front fixed base plate, 22-mounting hole, 23-movable clamping plate, 24-first fastener, 25-clamping hole, 26-slide groove, 26-nut block, 27-adjusting rod, 28-guide bar, 3-rear clamping assembly, 31-rear fixed base plate, 32-slot hole, 33-second fastener, 4-connecting plate. Detailed Implementation

[0024] To facilitate a better understanding of this utility model, the following examples are provided in conjunction with the accompanying drawings. These examples fall within the protection scope of this utility model, but do not limit the protection scope of this utility model.

[0025] Example 1 A vibration testing fixture for a video signal generation component, such as Figure 1 , Figures 3-5As shown, it includes: a base plate 1 with a fixing hole 11 thereon; a front clamping assembly 2, including: a front fixing base plate 21 with a mounting hole 22 thereon and disposed on the base plate 1; and at least two movable clamping plates 23, which are disposed opposite each other on the side of the front fixing base plate 21 and are connected by a first fastener 24; each movable clamping plate 23 can form a clamping hole 25 coaxial with the center of the mounting hole 22.

[0026] The video signal generation components are used in environments with many vibration factors. To avoid poor vibration resistance affecting the normal generation and transmission of video signals, vibration testing is required.

[0027] Several fixing holes are provided on the base plate so that when the vibration testing fixture is used, the base plate can be fixed on the vibration platform. The existing first fasteners, such as screws, can be passed through the fixing holes and the corresponding screw holes on the vibration platform and tightened.

[0028] The mounting holes on the front fixed base plate are used to fix the main body of the video signal generating component. When in use, the component is passed through the mounting holes to the appropriate position. The front end of the video signal generating component has a recessed ring for fixing it during use. Therefore, with the help of this structural feature, it can be clamped and fixed using a movable clamping plate.

[0029] The number of movable clamping plates can be adjusted according to actual needs, such as... Figure 1 It is divided into two symmetrical parts, which are fixed to the front fixed base plate by the first fastener (such as screws or other existing products); by moving the movable clamping plate to the appropriate position, the ring of the video signal test component can be clamped and fixed, or released from the video signal component; the clamping hole formed by the movable clamping plate when clamping the video signal generation component is coaxial with the center of the mounting hole, ensuring that the installed video signal generation component is installed straight.

[0030] Instructions for use: First, pass the video signal generating component through the mounting hole. Then, loosen the first fastener and clamp the movable clamping plate onto the outer ring of the video signal generating component. Tighten the first fastener to fix the movable clamping plate onto the front fixed base plate. This fixes the video signal generating component onto the vibration test fixture. Next, move the fixture onto the vibration platform of the vibration equipment and fix it onto the vibration platform using screws through the mounting holes. Then, start the vibration equipment to perform the vibration test. After the test is completed, turn off the vibration equipment, loosen the first fastener on the movable clamping plate to remove the movable clamping plate from the ring of the video signal generating component, remove the video signal generating component, and then loosen the screws on the base plate to remove the fixture from the vibration platform, completing the test.

[0031] Example 2 like Figure 1 , Figures 3-5As shown, when each movable clamping plate 23 moves toward the mounting hole 22 and is clamped onto the video signal generating component, the diameter of the clamping hole 25 can be smaller than the diameter of the mounting hole 22.

[0032] like Figure 1 , Figures 3-5 As shown, the front clamping assembly 2 also includes: a nut block 26, which is disposed on both sides of the front fixed base plate 21; an adjusting rod 27, which passes through the nut block 26 and is threadedly connected to it; rotating the adjusting rod 27 can move the adjusting rod 27 away from or against the movable clamping plate 23.

[0033] like Figure 1 , Figures 3-5 As shown, the front clamping assembly 2 also includes: a guide bar 28, which is disposed on the front fixed base plate 21, and the length directions of the two are aligned; the inner side of the guide bar 28 is connected to the upper and lower sides of each movable clamping plate 23 respectively.

[0034] like Figure 1 , Figures 3-5 As shown, the front fixed base plate 21 is perpendicular to the base plate 1; the adjusting rod 27 is perpendicular to the side of the movable clamping plate 23; and the adjusting rod 27 is parallel to the guide bar 28.

[0035] A sliding groove is provided on the movable clamping plate. The first fastener (such as a screw or other existing component) passes through the sliding groove and is connected and fixed to the fixed plate. When the movable clamping plate needs to be moved, the first fastener can be loosened, allowing the movable clamping plate to move a certain distance along the length of the front fixed base plate. For example, when it is necessary to fix the video signal generating component, the movable clamping plate should be moved toward the mounting hole and locked in a suitable position on the outside of the video signal generating component to achieve the fixing operation. After the test is completed, when it is necessary to remove the video signal generating component, the first fastener is loosened, allowing the movable clamping plate to move away from the mounting hole and to the sides of the front fixed base plate, so that the video signal generating component can be removed. Therefore, the sliding groove makes the operation of installing / removing the video signal generating component more convenient.

[0036] The front end of the video signal generating component is not of uniform diameter; there is a slightly smaller area around it that allows the movable clamping plate to clamp and fix it. In this case, the diameter of the clamping hole formed by the movable clamping plate is smaller than the diameter of the mounting hole.

[0037] Nut blocks are provided on both sides of the front fixed base plate. Adjustment rods are provided on the nut blocks facing the side of the movable clamping plate. When the movable clamping plate clamps the video signal generation component, the adjustment rods are turned to make them press against the side of the movable clamping plate. In this way, the movable clamping plate can be firmly clamped on the video signal generation component, avoiding the movable clamping plate from loosening due to vibration during testing, which would affect normal test operation.

[0038] The sliding groove facilitates the movement of the movable clamping plate along the length of the front fixed base plate. To prevent the movable clamping plate from tilting due to uneven force during movement, multiple guide strips (four as shown in the figure) are provided on the front fixed base plate. Each guide strip is attached to the upper and lower sides of the movable clamping plate and serves to limit and guide the movement of the movable clamping plate.

[0039] Example 3 like Figures 1-5 As shown, the vibration testing fixture also includes a rear clamping assembly 3, comprising: a rear fixing plate 31, which is disposed opposite to the front fixing plate 21 at both ends of the base plate 1; and a locking hole 32 disposed on the rear fixing plate 31; the rear fixing plate 31 and the front fixing plate 21 are arranged parallel to each other.

[0040] like Figures 1-5 As shown, the rear clamping assembly 3 also includes a second fastener 33, which is disposed on the rear fixing base plate 31; the second fastener 33 is located outside the slot 32.

[0041] The rear end of the video signal generating component is asymmetrical with the front end. The rear end has a protruding signal interface. To better secure it, a locking hole is made on the rear fixing base plate to allow the signal interface to extend out of the locking hole. The rear end of the video signal generating component has a screw hole for connection and fixation. Therefore, a second fastener is set at the corresponding position. When it is necessary to fix the video signal generating component, the second fastener (such as a screw) is tightened to make it more firmly connected and fixed to the rear fixing base plate. The screw hole on the rear fixing base plate corresponding to the second fastener is also provided and corresponds to the screw hole on the rear end of the video signal generating component.

[0042] By using the movable clamping plate and adjusting rod of the front clamping component, as well as the locking holes and second fasteners of the rear clamping component, the video signal generation component and the vibration testing fixture have multiple connection and fixing points, which can meet the requirements of vibration testing and avoid problems such as the video signal generation component falling off and being damaged due to insecure clamping during testing.

[0043] Example 4 like Figure 1 , Figure 3 As shown, the vibration testing fixture also includes a connecting plate 4, with its two ends connected to the front fixed base plate 21 and the rear fixed base plate 31, respectively.

[0044] Since the base plate is mounted on a vibration platform when the video signal generation component is subjected to vibration testing, and the vibration test has a certain intensity, a connecting plate is set to prevent the front and rear fixed base plates from tilting or loosening due to strong vibration during the test. The two ends of the connecting plate are connected to the front and rear fixed base plates respectively, which can play a stabilizing role.

[0045] Several connecting plates can be provided, and the two ends of each connecting plate can be connected to the left and right sides and the top and bottom ends of the front fixed base plate and the rear fixed base plate, respectively; the connection method can be existing connection and fixing methods such as tightening with fasteners (e.g., screws).

[0046] The vibration device involved in this application is not an innovation of this utility model, and the specific model will not be described here; the installation, connection and use of the vibration device are all existing technologies.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration testing fixture for a video signal generation component, characterized in that, include: The base plate (1) has fixing holes (11) on it; The front clamping component (2) includes: A front fixed base plate (21) has mounting holes (22) and is disposed on the base plate (1); At least two movable clamping plates (23) are disposed opposite each other on the side of the front fixed base plate (21) and are connected by a first fastener (24). Each of the movable clamping plates (23) can form a clamping hole (25) coaxial with the center of the mounting hole (22).

2. The vibration testing fixture for a video signal generation component according to claim 1, characterized in that, When each of the movable clamping plates (23) moves toward the mounting hole (22) and clamps onto the video signal generating component, the diameter of the clamping hole (25) is smaller than the diameter of the mounting hole (22).

3. The vibration testing fixture for a video signal generation component according to claim 2, characterized in that, The front clamping assembly (2) further includes: Nut blocks (26) are respectively disposed on both sides of the front fixed base plate (21); An adjusting rod (27) passes through the nut block (26) and the two are threaded together; Rotating the adjusting rod (27) can move the adjusting rod (27) away from or against the movable clamping plate (23).

4. The vibration testing fixture for a video signal generation component according to claim 3, characterized in that, The front clamping assembly (2) further includes: Guide strip (28) is provided on the front fixed base plate (21), and the length directions of the two are aligned. The inner side of the guide bar (28) is connected to the upper and lower sides of each of the movable clamping plates (23).

5. The vibration testing fixture for a video signal generation component according to claim 4, characterized in that, The front fixed base plate (21) is perpendicular to the base plate (1); The adjusting rod (27) is perpendicular to the side of the movable clamping plate (23); The adjusting rod (27) is parallel to the guide bar (28).

6. A vibration testing fixture for a video signal generation component according to any one of claims 1-5, characterized in that, Also includes: The back-end clamping component (3) includes: The rear fixing base plate (31) is disposed at both ends of the base plate (1) opposite to the front fixing base plate (21); A card hole (32) is provided on the rear fixing base plate (31); The rear fixing substrate (31) and the front fixing substrate (21) are arranged parallel to each other.

7. The vibration testing fixture for a video signal generation component according to claim 6, characterized in that, The rear clamping assembly (3) also includes: The second fastener (33) is provided on the rear fixing base plate (31); The second fastener (33) is located outside the slot (32).

8. The vibration testing fixture for a video signal generation component according to claim 7, characterized in that, Also includes: The connecting plate (4) is connected at both ends to the front fixed base plate (21) and the rear fixed base plate (31) respectively.

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