Self-adaptive mounting structure of composite target plate and substrate

Abstract

The utility model discloses a self-adaptive mounting structure for a composite target plate and a base plate, and belongs to the technical field of target plate mounting, the self-adaptive mounting structure comprises a mounting seat arranged on the base plate and a mounting hole formed in the target plate, and the mounting seat and the mounting hole are correspondingly arranged and are connected through a bolt and a pressing cap; the pressing cap is located on the side, away from the base plate, of the target plate, a bolt hole for the bolt to penetrate through is formed in the pressing cap in the axis direction of the pressing cap, the bolt penetrates through the bolt hole and the mounting hole and is connected with the mounting base, threads are formed in the mounting base and used for being in threaded connection with the bolt, and the pressing cap buckles the target plate through the fastening force of the bolt. By improving a mechanical structure, stress concentration is reduced or eliminated, the installation state of an armored product is restored, and the target test requirement is met.

Description

Technical Field

[0001] The present application relates to the technical field of target plate installation, and in particular to an adaptive installation structure of a composite target plate and a substrate. Background Art

[0002] Since modern warfare, the safety and protection performance of combat vehicles has always attracted much attention. With the continuous upgrading of modern weapons and equipment, the requirements for the mobility and protection of armored vehicles have been continuously improved. In order to meet the protection requirements, traditional metal armor has been continuously thickened, resulting in excessive weight of combat vehicles, which seriously affects combat mobility. Composite materials have high specific strength and high specific stiffness while also having good fatigue resistance and corrosion resistance. Since their advent, they have been widely used in aerospace, shipping, construction, special vehicles and other fields. However, the composition of composite materials is more complex, and its functionality is difficult to predict. A large number of target tests are required to determine its protective performance. During the target test, the strong impact force generated by the bullet impact will cause strong vibration of the target plate and the base plate, causing the connecting fasteners to loosen, affecting the stress state of the target plate, and thus affecting the accuracy of the target test.

[0003] Therefore, a reasonable, flexible and reliable target plate connection method is crucial for the accuracy of the target test results of protective armor. At present, most of the ships, special vehicles, and engineering equipment that require special protection in my country are metal shells, and the protective armor is installed on the metal substrate. The connection methods of composite materials and metal substrates are roughly divided into two methods: mechanical connection and adhesive connection. Adhesive connection will not cause stress concentration, but its bearing capacity and connection strength are low, and it is easy to age. Its connection reliability is restricted by the adhesive, and it is difficult to improve. During the operation process, the working environment of ships, special vehicles and other machinery is harsh. Not only will they be affected by heavy concentrated loads, random fluctuating loads, impact loads, etc., but they will also be affected by environmental factors such as high salt, high temperature, and high pressure. The adhesive connection method is difficult to meet the requirements. Mechanical connection usually requires the addition of an installation structure on the substrate, which requires high precision of the installation structure, and stress concentration is prone to occur at the connection.

[0004] Therefore, a composite target plate mechanical connection method with simple operation, reliable joint and strong practicality is needed to simulate the installation state of the target armor product and meet the target test requirements. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides an adaptive mounting structure of a composite target plate and a base plate, which reduces or eliminates stress concentration by improving the mechanical structure, restores the installation state of the armor product, and meets the needs of target testing.

[0006] The technical solution of this application to solve the above technical problems is as follows:

[0007] A self-adaptive mounting structure of a composite target plate and a substrate, comprising a mounting seat arranged on the substrate and a mounting hole opened on the target plate, wherein the mounting seat and the mounting hole are arranged correspondingly and are connected by bolts and a pressing cap; the pressing cap is located on a side of the target plate away from the substrate, the pressing cap is provided with a bolt hole for the bolt to pass through along its own axial direction, the bolt passes through the bolt hole and the mounting hole and is connected to the mounting seat, a thread is provided in the mounting seat for threaded connection with the bolt, and the pressing cap buckles the target plate by the tightening force of the bolt.

[0008] By adopting the above technical solution, before conducting the test operation, the operator passes the bolt through the bolt hole and the mounting hole in sequence and connects it with the mounting seat thread until the bolt is tightened. At this time, one end of the bolt is stably connected to the mounting seat, and the other end of the bolt makes the pressure cap abut against the upper wall of the target plate. The bolt and the pressure cap cooperate to achieve a simple and stable connection relationship between the substrate and the target plate.

[0009] Furthermore, the pressure cap includes a pressure-bearing portion and a limiting portion, the pressure-bearing portion is used to abut against the target plate, and the limiting portion is adapted to the mounting hole and is slidably connected to the mounting hole.

[0010] Furthermore, the bottom of the pressure-bearing part is cylindrical in shape, the upper and middle parts of the pressure-bearing part are truncated cone-shaped and gradually become thinner from bottom to top, and the bottom of the pressure-bearing part is connected to the limiting part.

[0011] Furthermore, the diameter of the bolt hole is larger than the diameter of the bolt shaft.

[0012] Furthermore, a receiving cavity for receiving the mounting seat is provided in the pressing cap, and the inner diameter of the receiving cavity is larger than the outer diameter of the mounting seat.

[0013] Furthermore, the mounting seat is a cylinder, the outer diameter of the mounting seat is 16 mm, and the interior of the mounting seat is an M8 thread.

[0014] Furthermore, a spring washer and a flat washer are provided at the narrower end of the pressure-bearing portion, and the bolt passes through the spring washer and the flat washer and abuts against the spring washer.

[0015] Furthermore, the mounting seats and mounting holes are provided in plurality and are respectively located at the corners of the substrate.

[0016] Furthermore, the pressure cap is made of Q235 steel.

[0017] In summary, compared with the prior art, the above technical solution has the following beneficial effects:

[0018] The adaptive mounting structure of a composite target plate and a substrate described in the present application can realize a simple and stable connection relationship between the substrate and the target plate. The operator places the substrate, places the target plate on top of the substrate, and places it according to the assembly position to ensure that the edges of the substrate and the target plate are aligned and that the position does not move during the assembly process; the operator installs the pressure cap, flat washer, spring ring, and bolt in sequence from bottom to top at multiple mounting hole positions, and then rotates the bolt to position; finally, tightens the bolts in sequence to complete the stable connection between each mounting hole and the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2 A cross-sectional view of the pressure cap and the mounting seat in this application;

[0021] Figure 3 It is a structural schematic diagram of the pressure-bearing part and the bolt hole in this application.

[0022] Explanation of the reference numerals: 1. substrate; 2. target plate; 2.1. mounting hole; 3. bolt; 4. spring washer; 5. flat washer; 6. pressure cap; 6.1. pressure bearing part; 6.2. bolt hole; 6.3. limiting part; 7. mounting seat. DETAILED DESCRIPTION

[0023] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0024] The embodiment of the present application discloses an adaptive mounting structure of a composite target plate and a substrate.

[0025] Reference Figure 1-Figure 3 A self-adaptive mounting structure of a composite target plate and a substrate comprises a substrate 1 and a target plate 2 which are arranged correspondingly, the substrate 1 is fixed with a mounting seat 7, a mounting hole 2.1 is opened on the target plate 2, the mounting seat 7 is arranged correspondingly to the mounting hole 2.1, the mounting seat 7 is a cylinder, the outer diameter of the mounting seat 7 is 16 mm, the mounting seat 7 is connected to the mounting hole 2.1 by a bolt 3 and a pressure cap 6; the pressure cap 6 is made of Q235 steel.

[0026] The pressure cap 6 is located on the side of the target plate 2 away from the substrate 1. The pressure cap 6 is provided with a bolt hole 6.2 for the bolt 3 to pass through along its own axial direction. The bolt hole 6.2 has an M8 thread inside. The bolt 3 passes through the bolt hole 6.2 and the mounting hole 2.1 in sequence and is connected to the mounting seat 7. The mounting seat 7 has a thread for threaded connection with the bolt 3. When the rod of the bolt 3 is rotated and placed in the mounting seat 7, the head of the bolt 3 abuts against the pressure cap 6, and the pressure cap 6 buckles the target plate 2 through the tightening force of the bolt 3.

[0027] Before conducting the test operation, the operator sequentially passes the bolt 3 through the bolt hole 6.2 and the mounting hole 2.1 and threadedly connects it with the mounting seat 7 until the bolt 3 is tightened. At this time, one end of the bolt 3 is stably connected to the mounting seat 7, and the other end of the bolt 3 makes the pressure cap 6 abut against the upper wall of the target plate 2. The bolt 3 and the pressure cap 6 cooperate to achieve a simple and stable connection relationship between the substrate 1 and the target plate 2, and the pressure cap 6 increases the contact area between the bolt 3 and the target plate 2, reducing stress concentration; by welding the mounting seat 7 on the surface of the substrate 1, the bolt 3 connection method can avoid processing the mounting hole 2.1 on the protected substrate 1, and maintain the original structure of the protected substrate 1.

[0028] The mounting seat 7 and the mounting hole 2.1 are both provided in plurality and are respectively located at the corners of the substrate 1. In the embodiment of the present application, the mounting seat 7 and the mounting hole 2.1 are both provided in four, and the plurality of mounting seats 7 and the mounting holes 2.1 cooperate to form a plurality of connection points, thereby making the connection between the substrate 1 and the target plate 2 more stable.

[0029] The pressure cap 6 includes a pressure-bearing portion 6.1 and a limiting portion 6.3. The bottom surface of the pressure-bearing portion 6.1 is used to abut against the target plate 2. The outer diameter of the limiting portion 6.3 is adapted to the mounting hole 2.1. The limiting portion 6.3 is inserted into the mounting hole 2.1, and the limiting portion 6.3 is slidably connected to the mounting hole 2.1. The bottom of the pressure-bearing portion 6.1 is cylindrical in shape, and the upper middle portion of the pressure-bearing portion 6.1 is truncated in shape and gradually becomes thinner from bottom to top. The bottom of the pressure-bearing portion 6.1 is connected to the limiting portion 6.3.

[0030] In the embodiment of the present application, the outer diameter D4 of the top of the pressure-bearing part 6.1 is 25 mm, the height h2 of the cylinder at the bottom of the pressure-bearing part 6.1 is 4 mm, the depth h3 of the bolt hole 6.2 is 2 mm, the outer diameter D2 of the limiter 6.3 is 27 mm, and the upper and middle parts of the pressure-bearing part 6.1 are truncated, so that the pressure cap 6 structure itself can withstand strong impact force. The pressure cap 6 increases the contact area with the target plate 2, which is conducive to dispersing the impact force and reducing the degree of damage to the connection point.

[0031] The diameter D1 of the bolt hole 6.2 is greater than the diameter of the rod of the bolt 3. In the embodiment of the present application, the diameter D1 of the bolt hole 6.2 is 8.5 mm. When the bolt 3 passes through the bolt hole 6.2 and is threadedly connected to the mounting seat 7, it is difficult for the axial direction of the mounting seat 7 to perfectly coincide with the axial direction of the bolt hole 6.2. At this time, the bolt hole 6.2 can provide a certain amount of activity margin for the bolt 3, so as to allow a certain degree of installation inclination of the bolt 3 or the mounting seat 7, and then can adaptively adjust the direction of the pressure from the bolt 3, so that the top of the pressure cap 6 can be effectively pressed on the target plate 2 by the bolt 3. When the bolt 3 is tilted, the pressure cap 6 always fits the target plate 2 closely, which reduces the precision requirements of the inclination deviation of the bolt 3 and the mounting seat 7, and improves the assembly fault tolerance.

[0032] The pressure cap 6 is provided with a receiving cavity for receiving the mounting seat 7, and the inner diameter D3 of the receiving cavity is larger than the outer diameter of the mounting seat 7. When the pressure-bearing portion 6.1 abuts against the target plate 2, the upper end of the mounting seat 7 is placed in the receiving cavity, which is beneficial to increase the threaded connection length between the bolt 3 and the mounting seat 7, thereby making the connection relationship between the bolt 3 and the mounting seat 7 more stable.

[0033] The narrower end of the pressure-bearing part 6.1 is provided with a spring washer 4 and a flat washer 5, and the bolt 3 passes through the spring washer 4 and the flat washer 5 and abuts against the spring washer 4. The upper pressure-bearing surface of the pressure cap 6 contacts the flat washer 5, and the upper pressure-bearing surface of the pressure cap 6 is larger than the outer diameter of the flat washer 5, which is conducive to evenly distributing the pressure of the flat washer 5. When performing the test operation, the spring washer 4 and the flat washer 5 are located above the pressure cap 6 and below the head of the bolt 3. The spring washer 4 and the flat washer 5 are placed below the head of the bolt 3 to prevent the bolt 3 from loosening and to evenly distribute the load.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An adaptive mounting structure of a composite target plate and a substrate, characterized in that: include: A mounting seat (7) arranged on a substrate (1) and a mounting hole (2.1) provided on a target plate (2); the mounting seat (7) and the mounting hole (2.1) are provided correspondingly and are connected via a bolt (3) and a pressure cap (6); the pressure cap (6) is located on a side of the target plate (2) away from the substrate (1); the pressure cap (6) is provided with a bolt hole (6.2) for the bolt (3) to pass through along its own axial direction; the bolt (3) passes through the bolt hole (6.2) and the mounting hole (2.1) and is connected to the mounting seat (7); a thread is provided inside the mounting seat (7) for threaded connection with the bolt (3); and the pressure cap (6) is buckled and pressed against the target plate (2) by the tightening force of the bolt (3).

2. The adaptive mounting structure of a composite target plate and a substrate according to claim 1, characterized in that: The pressure cap (6) comprises a pressure-bearing portion (6.1) and a limiting portion (6.3); the pressure-bearing portion (6.1) is used to abut against the target plate (2); and the limiting portion (6.3) is adapted to the mounting hole (2.1) and is slidably connected to the mounting hole (2.1).

3. The adaptive mounting structure of a composite target plate and a substrate according to claim 2, characterized in that: The bottom of the pressure-bearing part (6.1) is cylindrical in shape, the upper middle part of the pressure-bearing part (6.1) is truncated cone-shaped and gradually becomes thinner from bottom to top, and the bottom of the pressure-bearing part (6.1) is connected to the limiting part (6.3).

4. The adaptive mounting structure of a composite target plate and a substrate according to claim 1, characterized in that: The diameter of the bolt hole (6.2) is greater than the diameter of the shank of the bolt (3).

5. The adaptive mounting structure of a composite target plate and a substrate according to claim 1, characterized in that: The pressing cap (6) is provided with a receiving cavity for receiving the mounting seat (7), and the inner diameter of the receiving cavity is greater than the outer diameter of the mounting seat (7).

6. The adaptive mounting structure of a composite target plate and a substrate according to claim 1, characterized in that: The mounting seat (7) is a cylinder, the outer diameter of the mounting seat (7) is 16 mm, and the interior of the mounting seat (7) is an M8 thread.

7. The adaptive mounting structure of a composite target plate and a substrate according to claim 3, characterized in that: The narrower end of the pressure-bearing portion (6.1) is provided with a spring washer (4) and a flat washer (5), and the bolt (3) passes through the spring washer (4) and the flat washer (5) and abuts against the spring washer (4).

8. The adaptive mounting structure of a composite target plate and a substrate according to claim 1, characterized in that: The mounting seat (7) and the mounting hole (2.1) are both provided in plurality and are respectively located at the corner positions of the base plate (1).

9. The adaptive mounting structure of a composite target plate and a substrate according to claim 1, characterized in that: The pressing cap (6) is made of Q235 steel.

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