Water jet impact test fixture and method for ultra-high molecular weight polyethylene protective material

Abstract

The invention relates to the technical field of material performance testing, in particular to an ultra-high molecular weight polyethylene protection material water jet impact testing clamp and method.The ultra-high molecular weight polyethylene protection material water jet impact testing clamp comprises a rack and a workbench installed on the rack and horizontally arranged, and a splash-proof protection cover is arranged on the workbench; a target cloth clamping mechanism and a four-target synchronizing mechanism are respectively arranged in the splash-proof protective cover; the target cloth clamping mechanism and the four-target synchronizing mechanism are arranged on the workbench; the two groups of target cloth clamping mechanisms are arranged side by side, each group comprises two target cloth clamping mechanisms, and the four-target synchronizing mechanism is arranged between the two groups of target cloth clamping mechanisms and is used for driving the four target cloth clamping mechanisms to move synchronously. According to the invention, the multi-size compatibility test of UHMWPE cloth and the target cloth replacement function can be realized, and the safety guarantee level of operators is improved while the standardization of the test process is ensured.

Description

Technical Field

[0001] This invention relates to the field of material performance testing technology, and in particular to a water jet impact testing fixture and method for ultra-high molecular weight polyethylene protective materials. Background Technology

[0002] In recent years, ultra-high molecular weight polyethylene (UHMWPE) has become a focal material for lightweight protection due to its excellent strength, low density and impact resistance.

[0003] With the rapid increase in high-pressure water jet operations in petrochemical and emergency rescue fields, the demand for protective clothing is also expanding. Many companies are actively investing in the research and development of UHMWPE lightweight protective equipment. After investigating the current testing methods for high-pressure water jet protective clothing, it was found that there are two high-risk operating modes in this industry: one is that the operator uses ropes to tie the protective clothing sample to a wire mesh and then holds a water gun to test it; the other is to use manual stepping to fix the target cloth for testing.

[0004] The aforementioned traditional testing methods pose significant safety hazards during operation, especially serious threats to the personal safety of testing personnel. During testing, high-pressure water jets may cause unpredictable backlash and splashing. If operators are working at close range, they are highly susceptible to injury from the high-speed water flow, and may even face mechanical injury risks due to equipment malfunction or failure of the fixed structure.

[0005] Furthermore, the traditional fixing method also has some significant drawbacks. During the test, the target cloth is easily displaced by the impact of high-pressure water flow, and the wire binding structure can cause physical damage to the sample surface. These factors will directly affect the accuracy of the test data.

[0006] To address the aforementioned issues, this application provides a water jet impact testing fixture and method for ultra-high molecular weight polyethylene protective materials. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a water jet impact testing fixture and method for ultra-high molecular weight polyethylene (UHMWPE) protective materials. This fixture enables multi-size compatibility testing of UHMWPE fabrics and target fabric replacement, improving the safety of operators while ensuring the standardization of the testing process.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A water jet impact testing fixture for ultra-high molecular weight polyethylene protective material includes a frame and a horizontally mounted worktable on the frame. The worktable is equipped with a splash-proof protective cover, and the splash-proof protective cover contains a target cloth clamping mechanism and a four-target synchronization mechanism. Both the target cloth clamping mechanism and the four-target synchronization mechanism are located on the worktable.

[0010] The target cloth clamping mechanism consists of two sets arranged side by side, with two in each set. The four-target synchronization mechanism is located between the two sets of target cloth clamping mechanisms and is used to drive the four target cloth clamping mechanisms to move synchronously.

[0011] A power supply for powering the four-target synchronization mechanism is provided below the workbench;

[0012] The front side of the splash-proof protective cover is provided with a splash-proof door, and a control module is provided on one side of the splash-proof door. The control module is electrically connected to the PLC control system.

[0013] Preferably, each of the target cloth clamping mechanisms includes two I-beams arranged side-by-side at intervals, each I-beam having a first linear guide rail, and a stainless steel wire mesh laid flat between the two I-beams. One end of the stainless steel wire mesh is embedded and connected to a fixed-end clamping plate assembly, and the other end of the stainless steel wire mesh is embedded and connected to a movable-end clamping plate assembly. The fixed-end clamping plate assembly and the movable-end clamping plate assembly are arranged opposite to each other. The fixed-end clamping plate assembly includes an upper fixed-end clamping plate and a lower fixed-end clamping plate arranged vertically and vertically. The upper fixed-end clamping plate is clamped to the lower fixed-end clamping plate by clamping screws. The plate is connected in the following way: the fixed end lower clamping plate is fixedly connected to the I-beam; the moving end clamping plate assembly includes a moving end upper clamping plate and a sliding clamping plate arranged correspondingly above and below; the moving end upper clamping plate is connected to the sliding clamping plate by a clamping screw; a slider is connected below the sliding clamping plate; the slider is slidably connected to the first linear guide rail; a return spring is also provided between the fixed end clamping plate assembly and the moving end clamping plate assembly; the return spring is located on the outside of the first linear guide rail; and a limiting block is provided at the end of each first linear guide rail; the limiting block is fixedly connected to the I-beam.

[0014] Preferably, the four-target synchronization mechanism includes a servo motor, which is connected to a ball screw via a coupling. The ball screw is provided with a screw nut, which is connected to a fixed plate. Four sets of symmetrically distributed steel cables are connected to the fixed plate. The steel cables are wound around guide pulleys and then connected to the moving end clamping plate group of the target cloth clamping mechanism via steel cable clamps.

[0015] Preferably, a buffer spring is provided between the end of the steel cable and the fixing plate.

[0016] Preferably, a second linear guide is provided on one side of the ball screw, the fixing plate is slidably connected to the second linear guide via a second slider, and the second linear guide is fixedly connected to the motor bracket.

[0017] Preferably, each of the target cloth clamping mechanisms integrates a tension sensor in its fixed end clamping plate assembly, and the tension sensor is electrically connected to the PLC control system.

[0018] This invention also provides a method for testing the water jet impact of ultra-high molecular weight polyethylene (UHMWPE) protective materials. This method is based on the aforementioned water jet impact testing fixture for UHMWPE protective materials and includes the following steps:

[0019] Step 1, Target Cloth Installation and Initial Fixing: First, the operator opens the splash protection doors on both sides of the splash guard, inserts one end of each of the four UHMWPE target cloths to be tested into the fixed end clamping plate assembly, and tightens them with set screws; the other end of the target cloth is inserted into the movable end clamping plate assembly, and is also initially fixed with set screws; at this time, the target cloth is laid flat on the stainless steel wire mesh at the bottom. This structure can provide uniform support for the target cloth and reserve drainage channels;

[0020] Step 2, Synchronous and Balanced Tensioning of Four Targets: After the target cloth is installed, the operator sets the target tension force on the control panel; the tensioning program is started, the multi-target synchronous mechanism begins to work, the servo motor starts, and drives the ball screw to rotate through the coupling. The screw nut drives four sets of symmetrically distributed steel cables. After the steel cables are wound around the guide pulley group, they are finally connected to the moving end clamping plate group of the four target cloths; the motor rotates forward, pulling the four sets of steel cables to retract synchronously, thereby driving the four moving end clamping plate groups to move horizontally along the first linear guide rail, synchronously tightening the four target cloths; during this process, the tension sensor integrated in the fixed end clamping plate group monitors the pretension force of each target cloth in real time and feeds it back to the PLC control system; if the tension of a certain target cloth is found to deviate from the set value, the PLC control system will immediately adjust the speed of the servo motor for dynamic compensation until the tension of the four target cloths reaches balance; this design is based on the principle of equal tension transmission, and high-precision synchronous tensioning of four targets is achieved with only a single motor;

[0021] Step 3, High-Pressure Impact Test and Dynamic Response: After the four target cloths reach the predetermined tension in the 2×2 array, the high-pressure water jet equipment is started to conduct an impact test on the target cloths. At the moment of impact, the target cloths generate violent vibrations and tension fluctuations. At this time, the servo motor control system, with its rapid response capability, can dynamically compensate for the impact load based on the feedback from the tension sensor to maintain the stability of the tension. At the same time, the buffer spring added at the connection between the steel cable and the lead screw nut can absorb part of the impact energy, forming a flexible clamp, effectively avoiding damage to the transmission mechanism caused by rigid impact, and tolerating the dimensional errors of the target cloths themselves.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This invention uses a single servo motor to drive four independent transmission units, realizing a one-time synchronous impact test on four pieces of fabric.

[0024] 2. The tensioning mechanism designed based on the principle of equal tension transmission in this invention effectively eliminates the data dispersion problem caused by inconsistent boundary conditions in traditional testing.

[0025] 3. The target cloth clamping mechanism used in this invention has an adjustable width, which can quickly adapt to samples of different specifications.

[0026] 4. This invention incorporates an interlocking protection mechanism to ensure absolute safety, ensuring that "the knife will not move if the door is not closed". Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation of the target cloth clamping mechanism and the four-target synchronization mechanism in this invention;

[0030] Figure 4 This is a schematic diagram of the structure of a single target cloth clamping mechanism in this invention;

[0031] Figure 5 This is a schematic diagram of the four-target synchronization mechanism in this invention;

[0032] Figure 6 This is a top view of the four-target synchronization mechanism of the present invention. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, so that those skilled in the art can better understand the advantages and features of the present invention, thereby making a clearer definition of the scope of protection of the present invention. The embodiments described in this invention are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Reference Figure 1-6A water jet impact test fixture for ultra-high molecular weight polyethylene protective material includes a frame 1 and a workbench 2 mounted on the frame 1 and set horizontally. The workbench 2 is provided with a splash-proof protective cover 3. The splash-proof protective cover 3 is provided with a target cloth clamping mechanism 4 and a four-target synchronization mechanism 5. The target cloth clamping mechanism 4 and the four-target synchronization mechanism 5 are both located on the workbench.

[0035] The target cloth clamping mechanism 4 is arranged in two groups side by side, with two in each group. The four-target synchronization mechanism 5 is arranged between the two groups of target cloth clamping mechanisms 4. The four-target synchronization mechanism 5 is used to drive the four target cloth clamping mechanisms 4 to move synchronously.

[0036] A power supply 6 for supplying power to the four-target synchronization mechanism is provided below the workbench 2.

[0037] The front side of the splash-proof protective cover 3 is provided with a splash-proof protective door 7, and a control module 8 is provided on one side of the splash-proof protective door 7. The control module 8 is electrically connected to the PLC control system.

[0038] In this embodiment, the device is designed to study the damage mechanism of UHMWPE protective composite structures under water jet loads and to protect the safety of testing personnel. It primarily achieves three core functions: synchronous and balanced tensioning of four targets, high-pressure impact testing, and safety interlock protection. During impact testing, the operator stands outside the protective cover and adjusts the device to the ready state. The drive control device is installed on one side of the profile frame, while the actuator (i.e., the target cloth clamping mechanism) is located at the center of the platform.

[0039] Specifically, refer to Figure 4Each of the target cloth clamping mechanisms 4 includes two I-beams 401 arranged side by side at intervals. Each I-beam 401 is provided with a first linear guide rail 402. A stainless steel wire mesh 403 is laid flat between the two I-beams 401. One end of the stainless steel wire mesh 403 is embedded and connected to a fixed end clamping plate assembly, and the other end of the stainless steel wire mesh 403 is embedded and connected to a movable end clamping plate assembly. The fixed end clamping plate assembly and the movable end clamping plate assembly are arranged opposite to each other. The fixed end clamping plate assembly includes a fixed end upper clamping plate 404 and a fixed end lower clamping plate 405 arranged vertically. The fixed end upper clamping plate 404 is connected to the fixed end lower clamping plate 405 by a clamping screw 406. The clamping plate 405 is fixedly connected to the I-beam 401; the moving end clamping plate assembly includes a moving end upper clamping plate 407 and a sliding clamping plate 408 arranged correspondingly at the top and bottom. The moving end upper clamping plate 407 is connected to the sliding clamping plate 408 by a clamping screw 406. A slider 409 is connected below the sliding clamping plate 408. The slider 409 is slidably connected to the first linear guide rail 402; a return spring 410 is also provided between the fixed end clamping plate assembly and the moving end clamping plate assembly. The return spring 410 is located on the outside of the first linear guide rail 402, and a limiting block 411 is provided at the end of each first linear guide rail 402. The limiting block 411 is fixedly connected to the I-beam 401.

[0040] In this embodiment, during practical application, one end of each of the four UHMWPE target cloths to be tested is embedded into the fixed end clamping plate assembly, and the set screws are rotated to tighten and fix them. The other end of the target cloth is embedded into the movable end clamping plate assembly, and is also initially fixed by the set screws. At this time, the target cloth is laid flat on the bottom wire mesh support structure (such as...). Figure 4 Above (as shown), the structure can provide uniform support for the target cloth and has reserved drainage channels.

[0041] Specifically, refer to Figure 5 The four-target synchronization mechanism 5 includes a servo motor 501, which is connected to a ball screw 502 via a coupling. The ball screw 502 is provided with a screw nut 503, which is connected to a fixed plate 504. Four sets of symmetrically distributed steel cables 505 are connected to the fixed plate 504. The steel cables 505 are wound around a guide pulley 506 and then connected to the moving end clamping plate group of the target cloth clamping mechanism 4 via a steel cable clamp 507.

[0042] Specifically, a buffer spring 508 is provided between the end of the steel cable 505 and the fixing plate 504.

[0043] Specifically, a second linear guide rail 509 is provided on one side of the ball screw 502, and the fixing plate 504 is slidably connected to the second linear guide rail 509 through the second slider 510. The second linear guide rail 509 is fixedly connected to the motor bracket 511.

[0044] Specifically, each of the target cloth clamping mechanisms 4 has a tension sensor integrated in its fixed end clamping plate assembly, and the tension sensor is electrically connected to the PLC control system.

[0045] In this embodiment, after the target cloth is installed, the operator sets the target tension on the control panel. The tensioning program is started, and the multi-target synchronization mechanism begins to work; its transmission relationship is as follows: Figure 5 , Figure 6 As shown, the servo motor 501 starts, driving the ball screw 502 to rotate via a coupling. The screw nut 503 drives four symmetrically distributed steel cables 505, which, after passing through guide pulleys 506, finally connect to the moving end clamping plate groups of the four target fabrics. The motor rotates forward, pulling the four sets of steel cables to contract synchronously, thereby driving the four moving end clamping plate groups to move horizontally along the first linear guide rail 509, synchronously tightening the four target fabrics. During this process, tension sensors integrated in the fixed end clamping plate groups monitor the preload of each target fabric in real time and feed it back to the PLC control system. If a deviation is found between the tension of a target fabric and the set value, the PLC control system will immediately adjust the speed of the servo motor for dynamic compensation until the tension of the four target fabrics reaches equilibrium. This design, based on the principle of equal tension transmission, achieves high-precision synchronous tensioning of four targets using only a single motor.

[0046] In this process, once the four target fabrics in the 2×2 array reach the predetermined tension, the high-pressure water jet equipment is activated to conduct an impact test on the target fabrics. At the moment of impact, the target fabrics experience severe vibration and tension fluctuations. At this time, the servo motor control system, with its rapid response capability, can dynamically compensate for the impact load based on feedback from the tension sensor, maintaining stable tension. Simultaneously, a buffer spring (such as...) is added at the connection between the steel cable and the lead screw nut. Figure 5 (As shown) It can absorb some of the impact energy, form a flexible clamp, effectively avoid damage to the transmission mechanism caused by rigid impact, and tolerate the dimensional errors of the target cloth itself.

[0047] In practical applications, the entire testing process is conducted in a sealed environment with a protective shield, such as... Figure 1 As shown, the device's safety interlock system is implemented throughout: a door limit sensor is installed on the splash-proof door of the protective cover. If the door is not fully closed, the high-pressure water jet system will be prevented from starting via a hard-wired interlock of the PLC, ensuring "zero-contact" operation safety. During testing, if the overload protection module detects that the tension of any target cloth exceeds the maximum bearing capacity of the UHMWPE, or if the system detects an abnormality such as target cloth breakage, it will immediately and automatically cut off the power. Operators can also trigger the emergency stop button installed on the side wall at any time to directly cut off the system power, ensuring safety to the greatest extent.

[0048] During impact testing, over 90% of the water flow penetrates the target cloth. This water rapidly seeps through the diamond-patterned stainless steel wire mesh beneath the target cloth and enters the bottom drainage network, effectively preventing water film interference with test data and ensuring the continuity and accuracy of the test. After testing, the target cloth needs to be cleaned or replaced. The pin-type wire mesh frame design of the drainage system makes maintenance extremely convenient: a single person can lift and remove the entire wire mesh within 30 seconds by simply pulling the quick-release handle to release the spring pin, greatly improving testing efficiency.

[0049] In addition, the workbench and frame supporting this test fixture can be replaced by other high-strength platforms of the same height, and the I-beams under the target cloth clamping mechanism can be replaced by other high-strength pads of the same height.

[0050] A method for testing ultra-high molecular weight polyethylene (UHMWPE) protective materials using water jet impact, the method being implemented based on the aforementioned water jet impact testing fixture for UHMWPE protective materials, and comprising the following steps:

[0051] Step 1, Target Cloth Installation and Initial Fixing: First, the operator opens the splash protection doors on both sides of the splash guard, inserts one end of each of the four UHMWPE target cloths to be tested into the fixed end clamping plate assembly, and tightens them with set screws; the other end of the target cloth is inserted into the movable end clamping plate assembly, and is also initially fixed with set screws; at this time, the target cloth is laid flat on the stainless steel wire mesh at the bottom. This structure can provide uniform support for the target cloth and reserve drainage channels;

[0052] Step 2, Synchronous and Balanced Tensioning of Four Targets: After the target cloth is installed, the operator sets the target tension force on the control panel; the tensioning program is started, the multi-target synchronous mechanism begins to work, the servo motor starts, and drives the ball screw to rotate through the coupling. The ball screw nut drives four sets of symmetrically distributed steel cables. After the steel cables are wound around the guide pulley group, they are finally connected to the moving end clamping plate group of the four target cloths; the motor rotates forward, pulling the four sets of steel cables to retract synchronously, thereby driving the four moving end clamping plate groups to move horizontally along the first linear guide rail, synchronously tightening the four target cloths; during this process, the tension sensor integrated in the fixed end clamping plate group monitors the pretension force of each target cloth in real time and feeds it back to the PLC control system; if the tension of a certain target cloth is found to deviate from the set value, the PLC control system will immediately adjust the speed of the servo motor for dynamic compensation until the tension of the four target cloths reaches balance; this design is based on the principle of equal tension transmission, and high-precision synchronous tensioning of four targets is achieved with only a single motor;

[0053] Step 3, High-Pressure Impact Test and Dynamic Response: After the four target cloths reach the predetermined tension in the 2×2 array, the high-pressure water jet equipment is started to conduct an impact test on the target cloths. At the moment of impact, the target cloths generate violent vibrations and tension fluctuations. At this time, the servo motor control system, with its rapid response capability, can dynamically compensate for the impact load based on the feedback from the tension sensor to maintain the stability of the tension. At the same time, the buffer spring added at the connection between the steel cable and the lead screw nut can absorb part of the impact energy, forming a flexible clamp, effectively avoiding damage to the transmission mechanism caused by rigid impact, and tolerating the dimensional errors of the target cloths themselves.

[0054] In summary, this invention enables multi-size compatibility testing of UHMWPE fabrics and target fabric replacement, improving the safety of operators while ensuring the standardization of the testing process.

[0055] The descriptions and practices disclosed in this invention are readily apparent and understandable to those skilled in the art, and various modifications and refinements can be made without departing from the principles of this invention. Therefore, any modifications or improvements made without departing from the spirit of this invention should also be considered within the scope of protection of this invention.

Claims

1. A water jet impact testing fixture for ultra-high molecular weight polyethylene protective material, characterized in that, The device includes a frame and a horizontally mounted worktable. The worktable is equipped with a splash-proof protective cover, and the splash-proof protective cover contains a target cloth clamping mechanism and a four-target synchronization mechanism. Both the target cloth clamping mechanism and the four-target synchronization mechanism are located on the worktable. The target cloth clamping mechanism consists of two sets arranged side by side, with two in each set. The four-target synchronization mechanism is located between the two sets of target cloth clamping mechanisms and is used to drive the four target cloth clamping mechanisms to move synchronously. A power supply for powering the four-target synchronization mechanism is provided below the workbench; The front side of the splash-proof protective cover is provided with a splash-proof door, and a control module is provided on one side of the splash-proof door. The control module is electrically connected to the PLC control system.

2. The water jet impact testing fixture for ultra-high molecular weight polyethylene protective material according to claim 1, characterized in that, Each target cloth clamping mechanism includes two I-beams arranged side-by-side at intervals. Each I-beam is equipped with a first linear guide rail. A stainless steel wire mesh is laid flat between the two I-beams. One end of the stainless steel wire mesh is embedded and connected to a fixed-end clamping plate assembly, and the other end of the stainless steel wire mesh is embedded and connected to a movable-end clamping plate assembly. The fixed-end clamping plate assembly and the movable-end clamping plate assembly are arranged opposite to each other. The fixed-end clamping plate assembly includes an upper fixed-end clamping plate and a lower fixed-end clamping plate arranged vertically and vertically. The upper fixed-end clamping plate is connected to the lower fixed-end clamping plate by a clamping screw. The fixed end lower clamping plate is fixedly connected to the I-beam; the movable end clamping plate assembly includes a movable end upper clamping plate and a sliding clamping plate arranged correspondingly at the top and bottom. The movable end upper clamping plate is connected to the sliding clamping plate by a clamping screw. A slider is connected below the sliding clamping plate, and the slider is slidably connected to the first linear guide rail; a return spring is also provided between the fixed end clamping plate assembly and the movable end clamping plate assembly. The return spring is located on the outside of the first linear guide rail, and a limiting block is provided at the end of each first linear guide rail. The limiting block is fixedly connected to the I-beam.

3. The water jet impact testing fixture for ultra-high molecular weight polyethylene protective material according to claim 1, characterized in that, The four-target synchronization mechanism includes a servo motor, which is connected to a ball screw via a coupling. The ball screw is equipped with a screw nut, which is connected to a fixed plate. Four sets of symmetrically distributed steel cables are connected to the fixed plate. The steel cables are wound around guide pulleys and then connected to the moving end clamping plate group of the target cloth clamping mechanism via steel cable clamps.

4. The water jet impact testing fixture for ultra-high molecular weight polyethylene protective material according to claim 3, characterized in that, A buffer spring is provided between the end of the steel cable and the fixing plate.

5. A water jet impact testing fixture for ultra-high molecular weight polyethylene protective material according to claim 3, characterized in that, A second linear guide is provided on one side of the ball screw, and the fixing plate is slidably connected to the second linear guide through a second slider. The second linear guide is fixedly connected to the motor bracket.

6. A water jet impact testing fixture for ultra-high molecular weight polyethylene protective material according to claim 2, characterized in that, Each of the target cloth clamping mechanisms has a tension sensor integrated in its fixed end clamping plate assembly, and the tension sensor is electrically connected to the PLC control system.

7. A method for testing the water jet impact of ultra-high molecular weight polyethylene (UHMWPE) protective materials, the method being implemented based on the water jet impact testing fixture for UHMWPE protective materials as described in any one of claims 1-6, characterized in that... The method includes the following steps: Step 1, Target Cloth Installation and Initial Fixing: First, the operator opens the splash protection doors on both sides of the splash protection cover, inserts one end of each of the four UHMWPE target cloths to be tested into the fixed end clamping plate group, and presses them into place with set screws; the other end of the target cloth is inserted into the movable end clamping plate group and is also initially fixed with set screws; at this time, the target cloth is laid flat on the stainless steel wire mesh at the bottom. Step 2, Synchronous and Balanced Tensioning of Four Targets: After the target cloth is installed, the operator sets the target tension force on the control panel; the tensioning program is started, the multi-target synchronous mechanism begins to work, the servo motor starts, and drives the ball screw to rotate through the coupling. The screw nut drives four sets of symmetrically distributed steel cables. After the steel cables are wound around the guide pulley group, they are finally connected to the moving end clamping plate group of the four target cloths; the motor rotates forward, pulling the four sets of steel cables to retract synchronously, thereby driving the four moving end clamping plate groups to move horizontally along the first linear guide rail, synchronously tightening the four target cloths; during this process, the tension sensor integrated in the fixed end clamping plate group monitors the pretension force of each target cloth in real time and feeds it back to the PLC control system; if the tension of a certain target cloth is found to deviate from the set value, the PLC control system will immediately adjust the speed of the servo motor for dynamic compensation until the tension of the four target cloths reaches balance; Step 3, High-Pressure Impact Test and Dynamic Response: After the four target cloths reach the predetermined tension in the 2×2 array, the high-pressure water jet equipment is started to conduct an impact test on the target cloths. At the moment of impact, the target cloths generate violent vibrations and tension fluctuations. At this time, the servo motor control system, with its rapid response capability, can dynamically compensate for the impact load based on the feedback from the tension sensor to maintain the stability of the tension. Meanwhile, the buffer spring added at the connection between the steel cable and the screw nut can absorb part of the impact energy and form a flexible clamping.

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