A target board clamping device

Abstract

The application discloses a target plate clamping device and relates to the technical field of aircraft anti-penetration performance experimental research, which comprises a supporting seat, at least one pair of oppositely arranged fixing bosses, at least one pair of oppositely arranged loading blocks and adjusting bolts. The supporting seat has a first surface. The fixing bosses are fixed to the first surface, and each fixing boss is provided with a first through hole in the direction of opposite arrangement. The opposite arrangement direction of each pair of loading blocks is parallel to the opposite arrangement direction of the corresponding pair of fixing bosses. Each pair of loading blocks is located between the corresponding pair of fixing bosses, and each pair of loading blocks is movably attached to the first surface in the direction of opposite arrangement. An installation hole is formed in the loading block in the direction perpendicular to the first surface. A threaded hole is formed in the end of the loading block close to the adjacent fixing boss. The adjusting bolt is screwed through the first through hole and is screwed with the threaded hole. The adjusting bolt is used for driving the loading block to move so as to apply a force to the target plate.

Description

Technical Field

[0001] This invention relates to the field of experimental research on the anti-penetration performance of aircraft, and specifically to a target plate clamping device. Background Technology

[0002] During operation, aircraft may face the threat of penetration by high-speed debris or enemy weapons. In order to improve the penetration resistance of aircraft structures, material parameters at corresponding structural locations are often obtained through fragment penetration tests on target plates, thereby optimizing the penetration resistance performance of the materials.

[0003] Traditional fragment penetration tests on target plates are mostly based on stress-free conditions, while actual aircraft structures are often under pre-stressed or pre-loaded conditions (such as wing skin under aerodynamic loads and fastener pre-tension). Therefore, traditional fragment penetration tests cannot be adjusted according to different pre-stress conditions and cannot simulate the actual stress levels at the corresponding structures of actual aircraft, resulting in experimental conditions that do not match actual operating conditions and inaccurate experimental results. Summary of the Invention

[0004] The purpose of this invention is to provide a target plate clamping device that solves the problem that current fragment penetration target plate experiments cannot be adjusted according to different prestress conditions to simulate the actual stress level at the corresponding structure of the actual aircraft, so as to make the experimental conditions consistent with the actual working conditions and improve the accuracy of the experimental results.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A target plate clamping device, comprising:

[0007] Support base, the support base having a first surface;

[0008] At least one pair of oppositely arranged fixed bosses, the fixed bosses are fixed to the first surface, and each fixed boss has a first through hole along the opposite arrangement direction;

[0009] At least one pair of oppositely arranged loading blocks, the relative arrangement direction of each pair of loading blocks is parallel to the relative arrangement direction of the corresponding pair of fixed bosses, each pair of loading blocks is located between the corresponding pair of fixed bosses, and each pair of loading blocks is movably attached to the first surface along the relative arrangement direction. The loading blocks are provided with mounting holes along the direction perpendicular to the first surface. The mounting holes are used to cooperate with the detachable connector to fix the two edges of the target plate to the two loading blocks respectively. The end of the loading block near the adjacent fixed boss is provided with a threaded hole.

[0010] An adjusting bolt passes through the first through hole and is threadedly connected to the threaded hole. The adjusting bolt is used to drive the loading block to move in order to apply force to the target plate.

[0011] Optionally, in the target plate clamping device described above, the loading block includes a loading block body and an extension fixedly connected to each other. The loading block body is movably attached to the first surface, the extension extends along the relative arrangement direction of a pair of loading blocks, and an installation gap for accommodating the target plate is formed between the extension and the first surface. The mounting hole is opened in the extension in a direction perpendicular to the first surface, and the threaded hole is opened at one end of the loading block body near the adjacent fixing boss.

[0012] Optionally, in the target plate clamping device described above, there are four fixed bosses and four loading blocks. The four fixed bosses are located on the four sides of a rectangle, and the four loading blocks are adjacent to the four fixed bosses and disposed between the four fixed bosses.

[0013] Optionally, in the target plate clamping device described above, the target plate clamping device further includes a fixing plate, which covers the loading block and is arranged parallel to the first surface. The surface of the fixing plate near the first surface contacts the surface of the loading block away from the first surface. The fixing plate and the support base are fixedly connected by corresponding connecting holes and fasteners.

[0014] Optionally, in the target plate clamping device described above, the fixing plate is a rectangular frame plate, the side length of which is greater than the length of the loading block and less than the side length of the first surface.

[0015] Optionally, in the target plate clamping device described above, the connecting hole includes a second through hole penetrating through the first surface and a third through hole opened on the rectangular frame plate, and the fastener includes a bolt and nut assembly. The rectangular frame plate and the support base are fixedly connected through the second through hole, the third through hole and the bolt and nut assembly.

[0016] Optionally, in the target plate clamping device described above, there are eight second through holes and eight third through holes, with the eight third through holes evenly distributed at the corners of the four sides of the rectangular frame plate.

[0017] Optionally, in the target plate clamping device described above, the support base is an L-shaped structure composed of a first plate and a second plate that are perpendicular to each other. The first surface is the surface of the first plate, and the second plate is provided with a fixing structure. The support base is fixed to an external carrier for supporting the support base through the fixing structure.

[0018] Optionally, in the target plate clamping device described above, the fixing structure is a long strip groove that runs through the second plate, and the long strip groove is used to bolt the second plate to the external carrier.

[0019] Optionally, in the target plate clamping device described above, the number of first through holes on each fixed boss is at least two, and the number of threaded holes on each loading block is at least two.

[0020] Compared with the prior art, the target plate clamping device provided in this application uses a support base as the bearing foundation of the target plate, and its first surface provides a reference plane for clamping operations. At least one pair of fixed bosses are symmetrically fixed on both sides of the first surface of the support base, forming a rigid boundary and providing a fulcrum for applying prestress to the target plate. The first through hole opened in the opposite direction of each fixed boss provides a channel for the adjusting bolt. At least one pair of loading blocks are arranged parallel between the fixed bosses and can slide directionally along the first surface. The mounting holes on the loading blocks fix the edge of the target plate through detachable connectors, so that the target plate is connected to the loading blocks. After passing through the first through hole of the fixed boss, the adjusting bolt is screwed into the threaded hole of the loading block, and the rotational motion of the thread is converted into linear displacement. During operation: when the adjusting bolt is rotated, the head of the adjusting bolt is constrained by the fixed boss to move axially, and the threaded pair pushes the loading block to translate along the first surface, which simultaneously drives the two ends of the target plate to generate a displacement tendency, thereby realizing the application of prestress on the target plate. This setup, through the combination of fixed bosses and detachable connectors, forms the stress application fulcrum at the edge of the target plate. Furthermore, by adjusting the rotational motion of the bolts to convert it into linear force, the stress level of the target plate can be dynamically adjusted according to experimental requirements. This simulates the prestress state of aircraft components under real working conditions, improves the matching degree between experimental data and actual working conditions, and provides accurate experimental basis for optimizing the anti-penetration structure of aircraft. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of a target plate clamping device proposed in an embodiment of the present invention;

[0023] Figure 2 This is a side cross-sectional view of the loading block of a target plate clamping device proposed in an embodiment of the present invention;

[0024] Figure 3 This is a side view of the fixing plate of a target plate clamping device proposed in an embodiment of the present invention.

[0025] Reference numerals: 100 is the support base, 110 is the first plate, 111 is the first surface, 120 is the second plate, 200 is the fixing boss, 210 is the first through hole, 300 is the loading block, 310 is the mounting hole, 320 is the threaded hole, 330 is the loading block body, 340 is the extension, 400 is the detachable connector, 500 is the adjusting bolt, 600 is the target plate, 700 is the fixing plate, 800 is the fastener, and 900 is the long strip groove. Detailed Implementation

[0026] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Please see Figure 1The target plate clamping device provided in this embodiment of the invention includes: a support base 100, at least one pair of oppositely arranged fixing bosses 200, at least one pair of oppositely arranged loading blocks 300, and adjusting bolts 500; wherein, the support base 100 has a first surface 111; the fixing bosses 200 are fixed to the first surface 111, and each fixing boss 200 has a first through hole 210 along the opposite arrangement direction; the relative arrangement direction of each pair of loading blocks 300 is parallel to the relative arrangement direction of the corresponding pair of fixing bosses 200, and each pair of loading blocks 300 is located between the corresponding pair of fixing bosses 200. Each pair of loading blocks 300 is movably attached to the first surface 111 along the relative arrangement direction. The loading blocks 300 are provided with mounting holes 310 in a direction perpendicular to the first surface 111. The mounting holes 310 are used to cooperate with the detachable connector 400 to fix the two edges of the target plate 600 to the two loading blocks 300 respectively. The end of the loading block 300 near the adjacent fixing boss 200 is provided with a threaded hole. The adjusting bolt 500 passes through the first through hole 210 and is threadedly connected to the threaded hole 320. The adjusting bolt 500 is used to drive the loading blocks 300 to move so as to apply force to the target plate 600.

[0032] For specific implementation details, please refer to: Figure 1 In the target plate clamping device provided in this application, the support base 100 serves as the bearing base of the target plate 600, and its first surface 111 provides a reference plane for clamping operations; at least one pair of fixed bosses 200 are symmetrically fixed on both sides of the first surface 111 of the support base 100, forming a rigid boundary and providing a fulcrum for applying prestress to the target plate 600; each fixed boss 200 has a first through hole 210 opened in the opposite direction to provide a channel for the adjusting bolt 500; at least one pair of loading blocks 300 are arranged in parallel between the fixed bosses 200 and can slide directionally along the first surface 111; the mounting holes 310 on the loading blocks 300 fix the edge of the target plate 600 through the detachable connector 400, so that the target plate 600 is connected to the loading block 300; the adjusting bolt 500 passes through the first through hole 210 of the fixed boss 200 and is screwed into the threaded hole of the loading block 300, and the rotational motion of the thread is converted into linear displacement. During operation: When the adjusting bolt 500 is rotated, the head of the adjusting bolt 500 is constrained by the fixed boss 200 to move axially. The threaded pair pushes the loading block 300 to translate along the first surface 111, simultaneously causing the two ends of the target plate 600 to move, thus applying prestress to the target plate 600. This configuration, through the combination of the fixed boss 200 and the detachable connector 400, forms a stress application fulcrum at the edge of the target plate 600. Furthermore, by converting the rotational motion of the adjusting bolt 500 into a linear force, the stress level of the target plate 600 can be dynamically adjusted according to experimental requirements. This simulates the prestress state of aircraft components under real working conditions, improves the matching degree between experimental data and actual working conditions, and provides accurate experimental basis for optimizing the anti-penetration structure of aircraft.

[0033] Understandably, when a pair of loading blocks 300 and a pair of fixed bosses 200 are set, the prestress of the target plate 600 can be adjusted in a single direction within a plane. Similarly, when two pairs of loading blocks 300 and two pairs of fixed bosses 200 are set, the prestress of the target plate 600 can be adjusted in two directions within a plane. If prestress adjustment in multiple directions of the target plate 600 is required, the number of loading blocks 300 and fixed bosses 200 can be appropriately increased.

[0034] In some embodiments, the mounting hole 310 is a blind threaded hole, and both ends of the target plate 600 that are used to mate with the threaded hole 320 are provided with through holes. The detachable connector 400 is a screw. When the target plate 600 is installed on the loading block 300, the screw passes through the through hole on the target plate 600 and is threaded into the blind threaded hole, clamping the target plate 600 between the screw cap and the loading block 300, thus completing the fixation of the target plate 600 on the loading block 300.

[0035] As one possible implementation, please refer to Figure 2 The loading block 300 includes a loading block body 330 and an extension 340 fixedly connected to each other. The loading block body 330 is movably attached to the first surface 111. The extension 340 extends along the relative arrangement direction of the pair of loading blocks 300. An installation gap for accommodating the target plate 600 is formed between the extension 340 and the first surface 111. The mounting hole 310 is opened in the extension 340 in a direction perpendicular to the first surface 111. The threaded hole 320 is opened at one end of the loading block body 330 near the adjacent fixing boss 200.

[0036] With the above technical solution, the extension 340 is rigidly connected to the side of the loading block body 330, and its horizontal extension direction points to the central area of ​​the adjacent loading block 300, forming a symmetrically distributed cantilever structure. When the loading block body 330 is driven by the adjusting bolt 500 to move along the first surface 111, the extension 340 moves synchronously, and pulls the edge of the target plate 600 through the vertically opened mounting hole 310 and the detachable connector 400, causing the target plate 600 to deform under stress within the installation gap. This structure, by providing a pre-installed installation gap in the extension 340, allows for adjustment of the installation gap at the extension 340 by adjusting the size of the loading block 300. This enables the target plate clamping device to accommodate target plates 600 of different thicknesses. Furthermore, the design of the extension 340 utilizes the force transmission characteristics of a cantilever structure to convert the horizontal displacement of the loading block body 330 into precise forces within the plane of the target plate 600. Its opposing extension layout ensures symmetrical force application, eliminating the risk of target plate 600 deformation caused by non-uniform loads, guaranteeing the accuracy of experimental results, and making the experimental data more closely reflect the actual stress state of the aircraft skin under load. By creating threaded holes 320 within the loading block body 330, placing the threaded holes 320 and mounting holes 310 at different locations on the loading block 300, potential structural interference is eliminated, enhancing the structural strength of the loading block 300.

[0037] In some embodiments, such as Figure 2 As shown, when the loading block 300 includes a loading block body 330 and an extension 340 that are fixedly connected, there is an installation gap between the extension 340 and the first surface 111. Therefore, through holes can be opened on both the extension 340 and the target plate 600. The detachable connector 400 is a fixing bolt and a nut. The fixing bolt and nut are matched with the specifications of the through holes opened on the extension 340 and the target plate 600. The target plate 600 is clamped in the installation gap by the fixing bolt and nut, and the target plate 600 is fixed on the extension 340, thereby realizing the fixation of the target plate 600 and the loading block 300.

[0038] As one possible implementation, please refer to Figure 1 There are four fixed bosses 200 and four loading blocks 300. The four fixed bosses 200 are located on the four sides of a rectangle, and the four loading blocks 300 are adjacent to the four fixed bosses 200 and are positioned between the four fixed bosses 200.

[0039] Specifically, four fixed bosses 200 are respectively installed on the four rectangular sides of the first surface 111 of the support base 100, forming a rigidly distributed rectangular frame fulcrum; four loading blocks 300 are located between the rectangular frame formed by the four fixed bosses 200, and the four loading blocks 300 are opposite each other, contacting the first surface 111 in a movable fitting manner. When the adjusting bolt 500 passes through the first through hole 210 of the fixed boss 200 and is screwed into the threaded hole 320 of the loading block 300, the two opposite loading blocks 300 are subjected to force and move along the first surface 111, and exert force on the corresponding edge of the target plate 600 through its vertically opened mounting hole 310 and detachable connector 400, causing the four sides of the target plate 600 to deform under force.

[0040] In practice, the target plate 600 is first aligned and fixed with the mounting holes 310 of the four loading blocks 300 via detachable connectors 400. Then, the four adjusting bolts 500 are rotated as needed. The rotation of the adjusting bolts 500 causes the loading blocks 300 to move on the first surface 111, thus forming a symmetrically distributed stress field within the plane of the target plate 600. A stable rectangular frame is constructed through the geometrically symmetrical distribution of four fixed bosses 200 and four loading blocks 300. The four fixed bosses 200 serve as rigid fulcrums, providing a basis for the movement of the loading blocks 300. This allows for independent and controllable force application to the four sides of the target plate 600, enabling individual adjustment of the stress values ​​on each side and accurately replicating the non-uniform stress state of the aircraft skin under actual aerodynamic loads.

[0041] As one possible implementation, please refer to Figure 3 The target plate clamping device also includes a fixing plate 700, which covers the loading block 300 and is arranged parallel to the first surface 111. The surface of the fixing plate 700 near the first surface 111 contacts the surface of the loading block 300 away from the first surface 111. The fixing plate 700 and the support base 100 are fixedly connected by corresponding connecting holes and fasteners 800.

[0042] Specifically, the target plate clamping device also includes a fixing plate 700, which covers the loading block 300, such that the lower surface of the fixing plate 700 and the upper surface of the loading block 300 form a contact pressure interface. Simultaneously, the fixing plate 700 covers the entire surface of the loading block 300, but does not cover the central area on the first surface 111 of the target plate clamping device. When the fastener 800 passes through the corresponding connection hole between the fixing plate 700 and the support base 100 and locks, the fixing plate 700 undergoes downward elastic deformation, applying pressure close to the first surface 111 to the loading block 300, increasing the frictional resistance between the loading block 300 and the first surface 111. With this configuration, when the target plate 600 undergoes an impact test, the kinetic energy generated on the target plate 600 is transferred to the fixed plate 700 through the loading block 300 because the target plate 600 is in contact with the loading block 300. In the direction perpendicular to the first surface 111, the contact between the fixed plate 700 and the loading block 300 absorbs the impact kinetic energy, preventing the loading block 300 from jumping. In the direction parallel to the first surface 111, the increased friction suppresses the unexpected displacement of the loading block 300, increasing the accuracy of the experiment. By adding the fixed plate 700, a constraint perpendicular to the clamping plane is provided for the target plate 600. Combined with the mounting hole 310 and the detachable connector 400, the horizontal fixed constraint that fixes the target plate 600 to the loading block 300 is achieved, thus fixing the boundary of the target plate 600 and further making the experimental conditions consistent with the actual working conditions.

[0043] Further, please refer to Figure 1 The fixing plate 700 is a rectangular frame plate, with a side length greater than the length of the loading block 300 and less than the side length of the first surface 111. Specifically, the fixing plate 700 is a rectangular frame structure with a hollow center on its rectangular surface. It is formed by four long strip plates connected together to create the rectangular frame structure, ensuring that it does not interfere with the target plate 600 located between the loading blocks 300. Furthermore, the design of the rectangular frame having a side length greater than the loading block 300 and less than the side length of the first surface 111 ensures that each long strip plate of the rectangular frame completely covers the upper surface of the corresponding loading block 300, ensuring uniform pressure transmission. It also forms a hollowed-out avoidance zone in the middle, with the central rectangular window avoiding the effective area of ​​the target plate 600, thus not affecting the experimental process. Simultaneously, it prevents the corresponding connection holes of the fixing plate 700 and the support base 100 from interfering with the loading block 300, allowing the loading block 300 to move smoothly along the first surface 111.

[0044] In some embodiments, the connection hole includes a second through hole through the first surface 111 and a third through hole formed on the rectangular frame plate. The fastener 800 includes a bolt and nut assembly. The rectangular frame plate and the support base 100 are fixedly connected through the second through hole, the third through hole and the bolt and nut assembly.

[0045] Specifically, fastener 800 uses a bolt and nut assembly. By screwing the bolt through the third and second through holes and locking it with the nut, a rigid connection is achieved between the rectangular frame plate and the support base 100. The tightening force of the nut is converted into downward pressure on the rectangular frame plate, which is further transmitted to the upper surface pressure of the loading block 300, ultimately connecting the rectangular frame plate and the support base 100 together, fixing the loading block 300, and providing an upper limit position perpendicular to the first surface 111. During assembly, first align the third through hole of the rectangular frame plate with the second through hole of the support base 100, insert the bolt, and then screw the nut into the contact surface. Then, use a wrench or other tools to tighten the nut to the rated torque. By setting the second and third through holes on the support base 100 and the rectangular frame plate respectively, and fixing the support base 100 and the rectangular frame plate with bolts and nuts, the axial tensile force of the bolts forms a rigid connection frame, which can effectively resist the impact of experimental shocks on the life of the device. Furthermore, the hole-shaft fit provides automatic guidance, facilitating bolt installation and positioning, and improving experimental efficiency.

[0046] In some embodiments, a blind threaded hole is provided on the first surface 111, a through hole is provided on the fixing plate 700, and a fastener 800 includes a screw. When the support 100 and the fixing plate 700 are fixed relative to each other, the screw can pass through the through hole on the fixing plate 700 and be screwed into the blind threaded hole on the first surface 111.

[0047] Furthermore, there are eight second and eight third through holes, with the eight third through holes evenly distributed at the corners of the four sides of the rectangular frame plate.

[0048] Specifically, two second through holes are provided at each corner of the support base 100, and two third through holes are simultaneously provided at the corresponding corners of the rectangular frame plate. That is, two third through holes and two second through holes are provided at both ends of each side of the rectangular frame plate and the support base 100, forming eight sets of double-hole mating structures. After the bolts pass through the same set of holes, they are locked by nuts. During the assembly process, the rectangular frame plate is first placed on top of the support base 100 and covers the upper surface of the loading block 300. After aligning the eight sets of through holes, the bolts are inserted and the nuts are pre-tightened. Then, the nuts are tightened step by step in a cross-shaped sequence to ensure uniform pressure transmission.

[0049] This setup utilizes a rigid connection formed by double holes at the corners. When a fragment impacts the target plate 600, the impact energy is first transferred to the loading block 300 because the target plate 600 is in direct contact with the loading block 300. Since the loading block 300 is clamped by the rectangular frame and support base 100, the double bolt group at the corner of the rectangular frame immediately responds, transmitting the impact force to the support base 100. This design enhances impact resistance stability. The design of eight second and eight third through holes not only effectively ensures uniform pressure transmission but also effectively suppresses the risk of bolt loosening. Simultaneously, the concentrated hole arrangement at the corners avoids opening holes near the center of the long side of the frame, ensuring the structural integrity of the long side and allowing it to fully utilize its beam-type load-bearing characteristics. Furthermore, the eight sets of double-hole mating mechanisms effectively balance the load distribution when the device is subjected to asymmetrical impacts from fragments deviating from the target center, eliminating the problem of experimental interruption caused by loosening of the rectangular frame and support base 100.

[0050] In some possible implementations, the support base 100 is an L-shaped structure composed of a first plate 110 and a second plate 120 that are perpendicular to each other. The first surface 111 is the surface of the first plate 110, and the second plate 120 is provided with a fixing structure. The support base 100 is fixed to an external carrier for supporting the support base 100 by means of the fixing structure.

[0051] Specifically, the support base 100 adopts an L-shaped structure composed of a first plate 110 and a second plate 120 that are perpendicular to each other. The surface of the first plate 110 near the second plate 120 serves as the first surface 111 for clamping the target plate 600. The second plate 120 extends perpendicularly to the first plate 110 and is equipped with a fixing structure. The first plate 110 provides a horizontal bearing surface for arranging the clamping mechanism to clamp the target plate 600. The second plate 120 is connected to an external carrier through the fixing structure to achieve overall fixation of the target plate clamping device. During installation, the fixing structure of the second plate 120 is first aligned and positioned with the external carrier such as the experimental platform or frame, and then locked with fasteners. At this time, the second plate 120 remains stable, providing a stable reference for the first surface 111.

[0052] This structure achieves bidirectional load-bearing through a rigid transition at an L-shaped corner: when the loading block 300 applies a horizontal impact force to the target plate 600, the clamping mechanism arranged on the first plate 110 can be used to obtain experimental results, while the second plate 120 provides anti-overturning moment. In specific operation, the fixed structure transfers the constraint force of the external carrier to the second plate 120, which is then transformed into a stability support for the first plate 110 via the L-shaped corner, ensuring that the displacement of the first surface 111 remains constant under dynamic load. Through the coordinated design of its own rigid connection and functional partitioning, the problems of positioning accuracy and impact resistance stability of the experimental device are solved. The fixed structure on the second plate 120 allows the device to be quickly deployed on various carriers, while the first plate 110 provides a reference surface for prestress loading, extending the device's lifespan. This configuration further ensures the experimental accuracy of the target plate clamping device, providing fundamental support for anti-penetration research under complex working conditions.

[0053] In one embodiment, the second plate 120 of the support base 100 has through holes corresponding to the positions of the first through holes 210. The diameter of these holes is slightly larger than the tail size of the adjusting bolt 500, and the number of through holes is the same as that of the first through holes 210. Since the adjusting bolt 500 needs to be moved to adjust the movement of the loading block 300 in this embodiment, and since the support base 100 consists of two mutually perpendicular first plates 110 and second plates 120, and the movement direction of the adjusting bolt 500 is parallel to the first plate 110 with the first surface 111, its movement direction will be perpendicular to the second plate 120. When the adjusting bolt 500 passes horizontally through the first through hole 210 of the fixed boss 200, its tail end face faces the vertical surface of the second plate 120. By providing through holes at corresponding positions on the second plate 120, space is provided for the installation of the adjusting bolt 500, eliminating structural interference when installing the adjusting bolt 500.

[0054] During the assembly process, the tail of the adjusting bolt 500 is naturally inserted into the corresponding through hole of the second plate 120, and the adjusting bolt 500 can then naturally pass through the first through hole 210 from the outside of the fixed boss 200. An appropriate gap is maintained between the inner wall of the through hole and the shank of the adjusting bolt 500 to ensure that there is no frictional resistance when the adjusting bolt 500 rotates.

[0055] This design eliminates interference with the movement of the adjusting bolt 500. Furthermore, the relative positions of the through hole and the first through hole 210, and the larger inner diameter of the through hole than the first through hole 210, allow the adjusting bolt 500 to be quickly and easily positioned in the through hole and screwed into the first through hole 210, thus improving experimental efficiency.

[0056] In one specific implementation, the fixing structure is a long strip-shaped groove 900 extending through the second plate 120. The long strip-shaped groove 900 is used to bolt the second plate 120 to the external carrier. Specifically, the long strip-shaped groove 900 extends along the second plate 120 in a direction perpendicular to the first plate 110, and is used to fix the support base 100 to the external carrier with the bolts. During installation, the support base 100 is placed on the surface of the external carrier, so that the groove covers the threaded hole of the carrier. After the bolt is inserted and screwed into the threaded hole of the carrier, the horizontal position is adjusted by sliding the support base 100, and finally the locking nut is tightened to complete the fixing.

[0057] This sliding groove structure, through the clearance fit between the elongated groove and the bolt, forms a movable structure. When the position of the support 100 needs to be adjusted, the nut is loosened, the support 100 is pushed along the groove direction to the target position, and then tightened again. This design improves the alignment accuracy between the first surface 111 and the experimental equipment, while the surface contact characteristics between the groove edge and the bolt head effectively resist torsional torque during the experiment. Compared to the traditional fixed hole solution, the sliding groove structure can optimize the device position without precise positioning.

[0058] In some embodiments, the length direction of the elongated groove 900 is parallel to the contact intersection line of the first plate 110 and the second plate 120. During the experiment, the target plate 600 is subjected to impact, generating torque. When this torque is transmitted to the first plate 110, the first plate 110 tends to rotate away from the second plate 120 around the contact intersection line. When the length direction of the elongated groove 900 is parallel to the contact angle line of the first plate 110 and the second plate 120, the sidewall of the groove contacts the bolt shank, generating a counterforce, which improves the torque resistance of the target plate clamping device and increases the stability of the experiment.

[0059] In some embodiments, the number of first through holes 210 on each fixed boss 200 is at least two, and the number of threaded holes 320 on each loading block 300 is at least two.

[0060] Specifically, each fixed boss 200 has two, three, four, or more first through holes 210, and the corresponding loading block 300 has two, three, four, or more threaded holes 320, forming a multi-bolt drive mechanism. In this structure, the multiple first through holes 210 are parallel to each other in the thickness direction of the fixed boss 200, and the multiple threaded holes 320 are symmetrically distributed on the end face of the loading block 300 near the fixed boss 200; multiple adjusting bolts 500 pass through the first through holes 210 and are screwed into the threaded holes 320, so that the loading block 300 obtains multiple driving forces. During operation, the multiple adjusting bolts 500 are rotated synchronously to ensure that the loading block 300 moves smoothly along the first surface 111 and avoids skewing and stagnation caused by unilateral force.

[0061] In practice, when multiple adjusting bolts 500 rotate synchronously, the resulting thrust is evenly distributed along the loading block 300, eliminating the torque generated by a single bolt drive. This ensures that the loading block 300 moves smoothly in a straight line, making the addition of prestress on the target plate 600 more precise and controllable.

[0062] In some other embodiments, the number of threaded holes 320 and first through holes 210 is three, four, etc. The number of threaded holes 320 and first through holes 210 is the same and they are distributed accordingly. They are evenly arranged on the loading block 300 and the fixing boss 200, so that when adjusting the adjusting bolt 500, the loading block 300 can be evenly stressed and move smoothly.

[0063] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A target plate clamping device, characterized in that, include: Support base, the support base having a first surface; At least one pair of oppositely arranged fixed bosses, the fixed bosses being fixed to the first surface, and each of the fixed bosses having a first through hole along the opposite arrangement direction; At least one pair of oppositely arranged loading blocks, the relative arrangement direction of each pair of loading blocks is parallel to the relative arrangement direction of the corresponding pair of fixed bosses, each pair of loading blocks is located between the corresponding pair of fixed bosses, and each pair of loading blocks is movably attached to the first surface along the relative arrangement direction. The loading blocks are provided with mounting holes in a direction perpendicular to the first surface. The mounting holes are used to fix the two edges of the target plate to the two loading blocks respectively with a detachable connector. The end of the loading block near the adjacent fixed boss is provided with a threaded hole. An adjusting bolt passes through the first through hole and is threadedly connected to the threaded hole. The adjusting bolt is used to drive the loading block to move so as to apply a force to the target plate. The loading block includes a loading block body and an extension fixedly connected to each other. The loading block body is movably attached to the first surface. The extension extends along the relative arrangement direction of the pair of loading blocks. An installation gap for accommodating the target plate is formed between the extension and the first surface. The installation hole is opened in the extension in a direction perpendicular to the first surface. The threaded hole is opened at one end of the loading block body near the adjacent fixing boss. The number of fixed protrusions is four, the number of loading blocks is four, the four fixed protrusions are respectively located on the four sides of a rectangle, and the four loading blocks are respectively adjacent to the four fixed protrusions and disposed between the four fixed protrusions. The target plate clamping device further includes a fixing plate, which covers the loading block and is arranged parallel to the first surface. The surface of the fixing plate near the first surface is in contact with the surface of the loading block away from the first surface. The fixing plate and the support base are fixedly connected by corresponding connecting holes and fasteners.

2. The target plate clamping device according to claim 1, characterized in that, The fixing plate is a rectangular frame plate, and the side length of the rectangular frame plate is greater than the length of the loading block and less than the side length of the first surface.

3. The target plate clamping device according to claim 2, characterized in that, The connecting hole includes a second through hole penetrating the first surface and a third through hole formed on the rectangular frame plate. The fastener includes a bolt and nut assembly. The rectangular frame plate and the support base are fixedly connected through the second through hole, the third through hole and the bolt and nut assembly.

4. The target plate clamping device according to claim 3, characterized in that, The number of the second through hole and the number of the third through hole are both eight, and the eight third through holes are evenly distributed at the corners of the four sides of the rectangular frame plate.

5. The target plate clamping device according to claim 1, characterized in that, The support base is an L-shaped structure composed of a first plate and a second plate that are perpendicular to each other. The first surface is the surface of the first plate, and the second plate is provided with a fixing structure. The support base is fixed to an external carrier for supporting the support base by the fixing structure.

6. The target plate clamping device according to claim 5, characterized in that, The fixing structure is a long strip-shaped groove that runs through the second plate, and the long strip-shaped groove is used to bolt the second plate to the external carrier.

7. The target plate clamping device according to claim 1, characterized in that, The number of first through holes on each of the fixed bosses is at least two, and the number of threaded holes on each of the loading blocks is at least two.

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