A device and method for detecting the impact resistance of a resilient floor covering

Abstract

The application provides an impact resistance detection device and method for elastic floor used for building decoration. The device comprises an impact loading assembly, a secondary impact interception assembly, a sample resetting assembly and a reference bearing platform. The impact loading assembly can adjust the suspension height of the impact body; the secondary impact interception assembly realizes reliable interception of the rebounding impact body through a rotating support frame, a magnetic attraction retaining baffle and a positioning piece; the sample resetting assembly pushes the sample to reset after the impact is completed; and the reference bearing platform provides a stable installation basis for each assembly. In addition, a pressure sensor, a controller and a camera are also provided, the interception assembly is automatically controlled to move according to the pressure signal change to prevent secondary impact; the camera is used to collect the sample position image to judge whether the sample deviates or not, and then control the sample resetting assembly to move. The device has a simple structure and is convenient to operate, can ensure the accuracy of the steel ball impact point height and the impact sample center position, and can effectively avoid the secondary impact caused by the rebound of the steel ball.

Description

Technical Field

[0001] This application relates to the field of building decorative floor testing technology, and in particular to a device and method for testing the impact resistance of resilient flooring for building decoration. Background Technology

[0002] Resilient flooring for architectural decoration is a type of flooring material that can deform under external force and essentially return to its original shape after the force is removed. It is widely used in various building applications. Impact resistance is one of the important indicators for evaluating the quality of this type of flooring, directly affecting its durability and safety during use.

[0003] Currently, the testing of the impact resistance of resilient flooring mainly follows the relevant provisions of the industry standard JC / T 2600-2021. This standard requires the use of a steel ball with a nominal diameter of 25.4 mm, and the drop height is selected according to the floor thickness: 250 mm for floor thickness not exceeding 2.5 mm, and 500 mm for floor thickness exceeding 2.5 mm. During testing, the center of the sample must be aligned with the center of the support platform, allowing the steel ball to fall freely and accurately strike the center of the sample, with four consecutive impacts. During the impact process, it is crucial to prevent the steel ball from bouncing and causing secondary impacts on the sample, and the flooring sample must be returned to its original position after each impact. However, in practice, traditional testing methods have several shortcomings. Firstly, the landing point of the steel ball and the alignment of the floor with the support platform during each impact rely heavily on manual operation, making it difficult to guarantee the precise consistency of the impact position and easily introducing positional errors, affecting the accuracy and repeatability of the test results. On the other hand, steel balls are prone to bouncing after impact, and existing methods cannot effectively avoid secondary impacts caused by these bounces, thus interfering with the accurate reflection of test results. Furthermore, there is a lack of reliable positioning methods for resetting the specimen's position during multiple impacts, further exacerbating the inconsistencies in test conditions.

[0004] Therefore, how to reset the sample during the impact process while avoiding secondary impacts caused by the bouncing of the steel ball has become a key challenge in improving the accuracy and reliability of the test. Summary of the Invention

[0005] This application provides an impact resistance testing device for resilient flooring used in building decoration. It has a simple structure and is easy to operate, ensuring the accuracy of the height of the impact point of the steel ball and the center position of the impact specimen, while effectively avoiding secondary impacts caused by the bouncing of the steel ball.

[0006] In a first aspect, this application provides an impact resistance testing device for resilient flooring used in building decoration, comprising: An impact loading assembly, comprising an impact support frame and an impact body suspension platform, wherein the impact body suspension platform is slidably connected to the impact support frame in a vertical direction to adjust the height of the impact body suspension platform; A secondary impact interception assembly includes a rotating support frame, a rotating drive mechanism, a magnetic retaining baffle, and a positioning component. The rotating drive mechanism is connected to the rotating support frame and is used to drive the rotating support frame to rotate. The magnetic retaining baffle is slidably connected to the rotating support frame in the vertical direction. The positioning component is fixedly connected to the rotating support frame and is configured to selectively lock or release the position of the magnetic retaining baffle in the vertical direction. A sample reset assembly includes a reset baffle. During impact loading, the baffle moves away from the center of the sample. After the impact is completed, the reset baffle moves towards the center of the sample to push the sample to reset. A reference bearing platform includes a base and a platform fixedly connected to the base. An impact support frame and a rotating support frame are respectively fixedly connected to the side of the base. A sample reset assembly is slidably connected to the upper surface of the base and is located on the side of the platform. The height of the reset baffle is greater than the vertical distance from the upper surface of the platform to the upper surface of the base, so as to enclose and form a sample testing space.

[0007] In one feasible implementation, the impact support frame includes a first base, a portal frame, a screw, and a first bearing. The first base is fixedly connected to the base, and the portal frame is fixedly connected to the first base. The screw is perpendicular to the first base, one end of the screw is rotatably connected to the top of the portal frame through the first bearing, and the other end of the screw is rotatably connected to the first base through the first bearing. The impact suspension platform has a threaded hole, and the screw is threadedly connected to the threaded hole. When the screw rotates, it drives the impact suspension platform to rise and fall.

[0008] In one feasible implementation, a vertical measuring ruler is provided on the side of the portal support frame to measure the height of the impact body suspension platform.

[0009] In one feasible implementation, the rotary drive mechanism is a rotary motor, the rotary support frame includes a second base and a rotary shaft, the second base is fixedly connected to the base, the rotary motor is fixedly connected to the second base, and the output shaft of the rotary motor is drivenly connected to the rotary shaft.

[0010] In one feasible implementation, the positioning element is a locking screw, the magnetic retaining baffle is provided with a connecting block, the connecting block can slide along the outer axial direction of the rotating shaft, the outer wall of the connecting block is provided with a locking threaded hole in the radial direction of the rotating shaft, the locking screw is threadedly connected to the locking threaded hole, and the end of the locking screw abuts against the rotating shaft to fix the magnetic retaining baffle.

[0011] In one feasible implementation, the rotating shaft is a telescopic rod, which includes a fixed section and a telescopic section. The fixed section is connected to the output shaft of the rotary motor, and the telescopic section is slidably sleeved with the fixed section.

[0012] In one feasible implementation, a controller is also included. A pressure sensor is installed inside the platform. The pressure sensor is used to detect the pressure signal generated when the impactor acts on the sample and sends the pressure signal to the controller. The controller is configured to start the rotary motor of the secondary impact interception assembly when the pressure value detected by the pressure sensor changes from greater than a first threshold to less than a second threshold. This causes the rotary shaft to drive the magnetic holding baffle to rotate along the axial direction of the rotary shaft to the top of the sample testing space to intercept the impactor.

[0013] In one feasible implementation, the sample reset assembly further includes a linear drive mechanism, which is fixedly connected to the base. The output end of the linear drive mechanism is drivenly connected to the reset baffle, and is used to drive the reset baffle to reciprocate along a straight line.

[0014] In one feasible implementation, a camera is also included. The base is provided with a countersunk groove, and the camera is fixedly installed in the countersunk groove. The lens of the camera is facing the sample on the platform to acquire positional images of the sample to determine whether the sample has deviated.

[0015] Secondly, this application provides a method for testing the impact resistance of resilient flooring for building decoration, comprising: placing the resilient flooring sample to be tested on the table, adjusting the impactor suspension platform to a preset height, and placing the impactor on the impactor suspension platform; The reset baffle of the sample reset assembly is controlled to move to a position away from the center of the sample, releasing the impactor and allowing the impactor to fall freely to impact the elastic floor sample. The pressure sensor detects the pressure signal of the impactor acting on the elastic floor sample. When the pressure value detected by the pressure sensor changes from greater than a first threshold to less than a second threshold, the secondary impact interception component is controlled to act and intercept the impactor. The camera captures a positional image of the resilient floor, and determines whether the resilient floor sample has deviated. If deviation occurs, the reset baffle is controlled to move towards the center of the sample to push the resilient floor sample back to its original position.

[0016] This application provides an impact resistance testing device and method for resilient flooring used in building decoration, including an impact loading assembly, a secondary impact interception assembly, a sample repositioning assembly, and a reference bearing platform. The impact loading assembly employs a lifting structure with a screw and threaded hole, coupled with a vertical measuring scale mounted on the side of a portal frame. The operator can precisely adjust the height of the impactor suspension platform. The screw is rotatably connected to the portal frame and the first base via bearings at both ends, ensuring smooth rotation, effortless adjustment, and good self-locking, thus guaranteeing the stability of the suspension platform before impact release. By incorporating a secondary interception assembly, along with a pressure sensor and controller, when the pressure value of the impactor acting on the sample changes from greater than a first threshold to less than a second threshold (i.e., the impactor completes its first impact and begins to rebound), the controller automatically controls a rotary drive mechanism to rotate the rotary support frame to the interception position. A magnetic retaining baffle can attract and intercept the rebounding impactor, effectively preventing secondary impacts on the sample. This solution automates and precisely triggers the interception action, avoiding additional damage to the sample surface or interference with the test results caused by secondary impacts, significantly improving the accuracy and repeatability of impact testing. The sample reset assembly includes a reset baffle and a linear drive mechanism. Before impact loading, the reset baffle moves away from the sample center to avoid interfering with the impact process. After impact, the linear drive mechanism drives the reset baffle towards the sample center, automatically pushing the elastic floor sample back to its initial position without manual reset. Combined with position images acquired by a camera, a reset action can be triggered when the sample is detected to have deviated, achieving automatic correction of the sample position. This is suitable for batch continuous testing and significantly improves testing efficiency. This application effectively solves the problems of difficult control of secondary impacts, reliance on manual sample reset, and poor adaptability of interception components in existing elastic floor impact resistance testing devices, and has outstanding advantages such as accurate detection, convenient operation, and high degree of automation. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the impact resistance testing device for resilient flooring for building decoration provided in the embodiments of this application; Figure 2This is a schematic diagram of the secondary impact interception component structure of the impact resistance testing device for resilient flooring for building decoration provided in this application embodiment; Figure 3 This is a schematic diagram of the reference platform of the impact resistance testing device for resilient flooring for building decoration provided in the embodiments of this application; Figure 4 This application provides a schematic flowchart of a method for testing the impact resistance of resilient flooring for building decoration.

[0019] Explanation of reference numerals in the attached figures: Wherein: 1-Impact loading assembly; 11-Impact support frame; 111-First base; 112-Gantry support frame; 1121-Vertical measuring ruler; 113-Screw; 114-First bearing; 12-Impact body suspension platform; 121-Threaded hole; 2-Secondary impact interception assembly; 21-Rotating support frame; 211-Second base; 212-Rotating shaft; 2121-Fixed section; 2122-Telescopic section; 213-Rotating motor; 22-Rotating drive mechanism; 23-Magnetic holding baffle; 231-Connecting block; 2311-Locking threaded hole; 24-Positioning component; 3-Sample reset assembly; 31-Reset baffle; 311-Slider; 32-Linear drive mechanism; 4-Reference bearing platform; 41-Base; 411-Guide rail; 42-Table surface; 421-Pressure sensor; 43-Counterhead groove; 5-Camera. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0021] Resilient flooring for building decoration is widely used in various building applications, and its impact resistance directly affects its durability and safety. Industry standard JC / T 2600-2021 stipulates that a 25.4mm diameter steel ball should be used, with a drop height of 250mm or 500mm depending on the floor thickness, for four consecutive impacts. Secondary impacts must be prevented, and the sample must be reset after each impact. Traditional testing methods have shortcomings: manual operation leads to large errors in the alignment of the landing point and center, resulting in poor repeatability; it is difficult to effectively avoid secondary impacts caused by the bouncing of the steel ball; and there is a lack of reliable positioning methods for sample reset. Therefore, how to achieve reliable sample reset and avoid secondary impacts has become a key challenge in improving testing accuracy and reliability.

[0022] The impact resistance testing device and method for resilient flooring used in building decoration provided in this application, by setting up an impact loading component, a secondary impact interception component, a sample reset component, and a reference bearing platform, achieves reliable interception of the impactor after its rebound through the secondary impact interception component; the sample reset component pushes the sample back to its original position after the impact. The structure is simple and easy to operate, ensuring the accuracy of the height of the steel ball impact point and the center position of the impact specimen, while effectively avoiding secondary impacts caused by the steel ball bouncing.

[0023] The impact resistance testing device and testing method for resilient flooring for building decoration provided in this application are described in detail below with reference to the accompanying drawings.

[0024] In the first aspect, this application provides a device for testing the impact resistance of resilient flooring for architectural decoration.

[0025] Reference Figure 1 As shown, Figure 1 This is a schematic diagram of an impact resistance testing device for resilient flooring used in building decoration, provided in an embodiment of this application. The testing device includes an impact loading component 1, a secondary impact interception component 2, a sample resetting component 3, and a reference bearing platform 4. The reference bearing platform 4 includes a base 41 and a platform 42. The base 41 provides stable fixed connection points for each functional component, ensuring the stability of each part during testing. The platform 42 is used to support the resilient flooring sample and withstand the impact load generated when the sample falls. In some embodiments, the upper surface of the base 41 is provided with three steel balls arranged in an equilateral triangle, and the lower surface of the platform 42 is fixedly connected to the three steel balls, thereby forming a stable, unconstrained support structure. The impact support frame 11 and the rotating support frame 21 are respectively fixedly connected to the sides of the base 41. It should be noted that the impact support frame 11 and the rotating support frame 21 can be fixedly connected to the same side of the base 41, or they can be connected to adjacent or opposite sides of the base 41. This can be configured according to spatial layout or operating habits, but it must be ensured that the two do not interfere with each other's movement.

[0026] The impact loading assembly 1 includes an impact support frame 11 and an impact body suspension platform 12. The impact body suspension platform 12 is slidably connected to the impact support frame 11 in the vertical direction, thereby adjusting the height of the impact body suspension platform 12 to release the impact body at a preset height and apply a standardized impact load to the elastic floor sample. In some embodiments, the impact body suspension platform 12 can be configured as a magnetic platform. When energized, the magnetic platform has magnetism to attract the impact body. When de-energized, the magnetism of the magnetic platform disappears, and the impact body falls to apply an impact load to the elastic floor sample. In other embodiments, the impact body suspension platform can be equipped with a robotic arm. The robotic arm holds the impact body, and when an impact load needs to be applied, the robotic arm is controlled to release the impact body, allowing the impact body to fall freely. In some embodiments, the impact body can be a steel ball.

[0027] The secondary impact interception assembly 2 includes a rotating support frame 21, a rotating drive mechanism 22, a magnetic holding baffle 23, and a positioning element 24. The rotating support frame 21 can drive the magnetic holding baffle 23 to rotate quickly above the sample after the impactor rebounds. The magnetic holding baffle 23 magnetically attracts and captures the rebounding impactor, actively intercepting it when the impactor completes its first impact and bounces, thus preventing the impactor from causing a secondary impact on the elastic floor sample.

[0028] The sample reset assembly 3 is installed on the upper surface of the base 41. The sample reset assembly 3 automatically pushes the elastic floor sample back to its initial position after each impact, avoiding positional deviations caused by manual reset and ensuring consistency of multiple impact test conditions. The sample reset assembly 3 includes a reset baffle 31, which can slide along the upper surface of the base 41. When impact loading occurs, the reset baffle 31 moves away from the sample center, thus clearing the impact area and ensuring the steel ball can fall freely and accurately hit the sample center, avoiding interference from the reset baffle 31 during the impact process. After the impact, the reset baffle 31 moves towards the sample center, pushing the elastic floor sample back to its initial alignment position. Furthermore, the reset baffle 31 is the actuator that directly contacts and pushes the elastic floor sample. Four reset baffles 31 enclose the sample testing space. The height of the reset baffles 31 is greater than the distance from the upper surface of the platform 42 to the upper surface of the base 41, allowing them to reliably contact the side of the elastic floor sample placed on the platform 42. The sample reset assembly 3 achieves precise sample reset, eliminates random errors introduced by manual reset, and ensures the consistency of sample position in multiple consecutive impact tests, thereby significantly improving the repeatability and comparability of test results.

[0029] In some embodiments, the sample reset assembly 3 includes a linear drive mechanism 32, which is fixedly connected to the base 41. The output end of the linear drive mechanism 32 is connected to the reset baffle 31 for driving the reset baffle 31 to reciprocate in a straight line, i.e., moving in a direction close to or away from the center of the elastic sample. The linear drive mechanism 32 can be a linear cylinder, linear electric cylinder, electric push rod, or lead screw motor, etc.

[0030] In some embodiments, a guide rail 411 is provided on the upper surface of the base 41, and a slider 311 is provided on the lower surface of the reset baffle 31. The slider 311 slides along the guide rail 411, allowing the reset baffle 31 to slide along the guide rail 411. Through the linear motion guiding mechanism formed by the guide rail 411 and the slider 311, the sliding of the reset baffle 31 is restricted to a single degree of freedom, achieving high-precision, low-friction, and high-rigidity reciprocating motion. This ensures the automatic and accurate reset of the sample position after each impact.

[0031] Continue to refer to Figure 1 As shown, the impact support frame 11 includes a first base 111, a portal frame 112, a screw 113, and a first bearing 114. The first base 111 serves as the mounting base for the impact support frame 11 and is fixedly connected to the base 41 by bolts or welding, thus securely fixing the entire impact support frame 11 onto the reference bearing platform 4. The portal frame 112 is fixedly connected to the first base 111 and has an inverted "U"-shaped frame structure with a hollow channel inside. The screw 113 is arranged vertically, perpendicular to the first base 111. The upper end of the screw 113 is rotatably connected to the top of the portal frame 112 via the first bearing 114, and the other end is also rotatably connected to the first base 111 via the first bearing 114. The external thread of the screw 113 engages with the threaded hole 121 on the impact suspension platform 12 to form a helical transmission pair. When the screw 113 is manually or electrically driven to rotate, the impact suspension platform 12 moves linearly up and down along the axial direction of the screw 113. The transmission method using a drop rod thread has a self-locking characteristic, meaning that when the screw 113 stops rotating, the impact body suspension platform 12 will not slide down on its own due to neutral or impact vibration, thus ensuring the stability of the preset height.

[0032] In some embodiments, a sliding guide structure is provided between the two side columns of the portal support frame 112 and the impact body suspension platform 12 to provide guiding constraints for the lifting and lowering of the impact body suspension platform 12. Exemplarily, one or both side columns of the portal support frame 112 are provided with linear guide rails, and the impact body suspension platform 12 is provided with sliders that match the linear guide rails.

[0033] In some embodiments, a vertical measuring scale 1121 is provided on the side of the portal frame 112 for measuring the height of the impactor suspension platform 12. This vertical measuring scale 1121 extends vertically, with its scale starting point corresponding to the initial position of the lower surface of the impactor suspension platform 12. It is used to measure and display the height of the impactor suspension platform in real time, providing operators with an intuitive and accurate height reading, enabling rapid positioning to the standard required impact drop height. The measuring scale can be a laser-etched metal strip or an adhesive scale marking, with a minimum graduation of 1 mm or 0.5 mm.

[0034] Reference Figure 2 As shown, Figure 2This is a schematic diagram of the secondary impact interception component structure of the impact resistance testing device for resilient flooring for building decoration provided in this application embodiment. The secondary impact interception component 2 includes a rotating support frame 21, a rotating drive mechanism 22, a magnetic retaining baffle 23, and a positioning element 24. The rotating support frame 21 includes a second base 211 and a rotating shaft 212. The second base 211 serves as the fixed base of the rotating support frame 21 and is fixedly connected to the base 41 of the reference bearing platform 4 by bolts or welding. A bearing seat is provided inside or above the second base 211 to accommodate the support bearing of the rotating shaft 212. In some embodiments, the rotating drive mechanism 22 is a rotary motor used to provide rotational power to the rotating support frame 21. The rotary motor is mounted on the second base 211, and its output shaft is connected to one end of the rotating shaft 212 via a coupling, driving the rotating shaft 212 to rotate. The other end of the rotating shaft 212 is used to fix the magnetic retaining baffle 23 and the positioning element 24. When the rotating shaft 212 rotates, it causes the magnetic retaining baffle to swing within a preset angle range.

[0035] In some embodiments, the positioning element 24 employs a locking screw to lock and release the vertical position of the magnetic retaining baffle 23. A connecting block 231 is provided at the bottom of the magnetic retaining baffle 23. The connecting block 231 can slide axially along the outer wall of the rotating shaft. A locking threaded hole 2311 is formed on the outer wall of the connecting block 231 in the radial direction of the rotating shaft 212. The locking screw passes through the locking threaded hole 2311 and is threadedly engaged with it. The end of the locking screw abuts against the outer surface of the rotating shaft. The positive pressure generated by tightening the locking screw fixes the connecting block 231 relative to the rotating shaft 212, thereby locking the vertical position of the magnetic retaining baffle 23. When the locking screw is turned outwards, the contact force allows the magnetic retaining baffle 23 to slide freely along the axial direction of the rotating shaft 212, enabling position release and readjustment. The operator only needs to loosen or tighten one screw to adjust and lock the baffle position, requiring no special tools, making it simple and convenient.

[0036] In some embodiments, the connecting block 231 is configured as a C-shaped or semi-enclosed structure that surrounds the rotating shaft 212 to increase the contact area and guide length, ensuring that the magnetic retaining baffle 23 does not wobble or tilt when sliding vertically.

[0037] In some implementations, the positioning element 24 may be a locking element such as a spring pin or a clamp.

[0038] Continue to refer to Figure 2As shown, in some embodiments, the rotating shaft 212 is a telescopic rod to adjust the axial extension length of the magnetic retaining baffle 23. Specifically, the telescopic rod includes a fixed section 2121 and a telescopic section 2122. The fixed section 2121 is drivenly connected to the output shaft of the rotary motor 213, and the telescopic section is slidably sleeved with the fixed section. That is, one end of the telescopic section 2122 is slidably sleeved with the fixed section 2121, and the other end is used to install the magnetic retaining baffle 23 and its connecting block 231. The position of the magnetic retaining baffle 23 can be changed by manually or electrically driving the telescopic section 2122 to slide along the fixed section 2121.

[0039] Reference Figure 3 As shown, Figure 3 This is a schematic diagram of the reference bearing platform of the impact resistance testing device for resilient flooring used in building decoration provided in this application embodiment. To further achieve automatic monitoring of the impact process and accurate interception of secondary impacts, in some embodiments, a pressure sensor 421 is embedded inside the platform 42. This pressure sensor 421 is used to detect in real time the pressure signal acting on the resilient flooring sample when the impactor falls and strikes it, and converts the detected pressure signal into an electrical signal and sends it to a controller (not shown in the figure). The controller can be a PLC, a microcontroller, or an industrial computer. The controller is configured to: when the pressure value detected by the pressure sensor 421 changes from greater than a first threshold to less than a second threshold, immediately control the secondary impact interception component 2 to operate, i.e., the rotary motor starts, driving the rotary shaft 212 to rotate, thereby causing the magnetic retaining baffle 23 to quickly rotate to the interception position, to prevent the impactor from rebounding and falling again, causing a secondary impact on the sample. The first threshold is the peak pressure generated by the impactor's first impact on the sample, and the second threshold is the pressure at which the impactor completes the main impact process and begins to rebound away from the resilient flooring sample. The second threshold can be set to a value close to 0 or less than 10% of the peak pressure.

[0040] In some embodiments, the pressure sensor 421 is a piezoelectric force sensor or a strain gauge force sensor.

[0041] Continue to refer to Figure 3 As shown, the base 41 is also equipped with a camera 5. Specifically, the base 41 is provided with a countersunk groove 43, and the camera 5 is fixedly installed in the countersunk groove 43. The lens of the camera 5 faces the sample on the table 42 to collect the position image of the sample, and uses the image processing algorithm to determine whether the sample has deviated after the impact, so as to trigger the sample reset assembly 3 to reset the elastic floor sample.

[0042] Secondly, this application provides a method for testing the impact resistance of resilient flooring used in architectural decoration.

[0043] Reference Figure 4 As shown, Figure 4This application provides a schematic flowchart of a method for testing the impact resistance of resilient flooring for architectural decoration.

[0044] S100: Place the test sample of the elastic floor on the upper surface of the table 42, adjust the impactor suspension platform to the preset height, place the impactor on the lower surface of the impactor suspension platform, and keep it in the state of waiting to be released.

[0045] When placing the resilient flooring sample to be tested, ensure that the center of the sample is approximately aligned with the center of the platform. Adjust the position of the impactor suspension platform according to the thickness of the flooring being tested. For example, when the thickness of the resilient flooring sample is less than 2.5 mm, the impactor drops from a height of 250 mm. Drive the impactor suspension platform vertically along the impact support by rotating the screw, adjusting the platform to a position 250 mm from the surface of the resilient flooring sample. During adjustment, refer to the vertical measuring scale on the side of the portal frame for accurate readings. Finally, place the impactor on the impactor suspension platform and ensure it is in the ready-to-release state.

[0046] S200: Control the reset baffle 31 of the sample reset assembly 3 to move to a position away from the center of the sample, release the impactor, and let the impactor fall freely to impact the elastic floor sample.

[0047] The linear drive mechanism 32 of the control sample reset assembly 3 retracts its output end, driving the reset baffle 31 to move away from the center of the sample along the guide rail on the upper surface of the base until the impact area is completely cleared, thus preventing the reset baffle 31 from interfering with the falling impactor. Subsequently, the impactor is released, allowing it to fall freely under gravity, accurately striking the center area of ​​the elastic floor sample with the specified impact energy.

[0048] S300: The pressure signal of the impactor acting on the elastic floor sample is detected by the pressure sensor 421. When the pressure value detected by the pressure sensor changes from greater than the first threshold to less than the second threshold, the secondary impact interception component is controlled to intercept the impactor.

[0049] At the moment of impact and immediately after the impactor strikes the sample, the pressure sensor 421 embedded inside the platform 42 collects the pressure signal exerted by the impactor on the sample in real time and sends the signal to the controller. The controller continuously monitors the pressure value: when the pressure value changes from greater than a first threshold to less than a second threshold, it is determined that the impactor has completed its first impact and has begun to rebound away from the sample. At this time, the controller immediately sends a command to the rotary drive mechanism 22 of the secondary impact interception assembly 2, driving the rotary support frame 21 to rapidly rotate the magnetic retaining baffle 23 to the interception position above the elastic floor sample. The magnetic retaining baffle 23 magnetically attracts and captures the rebounding impactor, thereby preventing it from falling again and causing a secondary impact on the elastic floor sample.

[0050] S400: The camera 5 acquires the position image of the elastic floor and determines whether the elastic floor sample has deviated. When deviation occurs, the reset baffle 31 is controlled to move towards the center of the sample to push the elastic floor sample to reset.

[0051] After the secondary impact interception is completed, the controller activates camera 5. The camera is fixed in the countersunk groove of the base, with its lens facing the sample on the platform, acquiring real-time position images of the sample. Using built-in or external image processing algorithms (such as edge detection and template matching), the offset of the sample center relative to the platform center is analyzed to determine if the sample has deviated (including lateral displacement, rotation, or warping). If the sample is determined to have deviated, the controller controls the linear drive mechanism to extend, driving the reset baffle 31 to move towards the sample center, smoothly pushing the sample sidewall back to its initial alignment position. After reset, the reset baffle retracts again, preparing for the next impact.

[0052] In summary, the impact resistance testing device and method for resilient flooring used in building decoration provided in this application achieve stepless precise adjustment and self-locking of the impact height through an impact loading component, and ensure that the impact energy strictly meets the standard requirements in conjunction with a vertical measuring ruler. The secondary impact interception component uses a pressure sensor to monitor the impact force signal in real time. At the moment the impactor completes the first impact and rebounds, the controller automatically drives a rotary motor to drive the magnetic retaining baffle to rotate quickly to the interception position, effectively avoiding secondary impact interference caused by the bouncing of the steel ball. The sample reset component adopts a linear drive mechanism and guide rail slider to automatically push the sample back to the initial centering position after each impact, eliminating the positional error of manual reset. At the same time, a camera is embedded in the countersunk groove of the base to acquire sample images in real time and determine whether there is deviation, forming a closed-loop correction. The entire device has a compact structure and a high degree of automation, significantly improving the repeatability, accuracy and operational efficiency of multiple consecutive impact tests.

[0053] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0054] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A device for testing the impact resistance of resilient flooring for architectural decoration, characterized in that, include: Impact loading assembly (1), the impact loading assembly (1) includes an impact support frame (11) and an impact body suspension platform (12), the impact body suspension platform (12) and the impact support frame (11) are slidably connected in the vertical direction to adjust the height of the impact body suspension platform (12); The secondary impact interception assembly (2) includes a rotating support frame (21), a rotating drive mechanism (22), a magnetic retaining baffle (23), and a positioning element (24). The rotating drive mechanism (22) is connected to the rotating support frame (21) for driving the rotating support frame (21) to rotate. The magnetic retaining baffle (23) is slidably connected to the rotating support frame (21) in the vertical direction. The positioning element (24) is fixedly connected to the rotating support frame (21) and is configured to selectively lock or release the position of the magnetic retaining baffle (23) in the vertical direction. The sample reset assembly (3) includes four reset baffles (31). During impact loading, the reset baffles (31) move away from the center of the sample. After the impact is completed, the reset baffles (31) move towards the center of the sample to push the sample to reset. The reference bearing platform (4) includes a base (41) and a platform (42) fixedly connected to the base (41). The impact support frame (11) and the rotating support frame (21) are respectively fixedly connected to the side of the base (41). The sample reset assembly (3) is slidably connected to the upper surface of the base (41). The four reset baffles (31) are respectively located on the four sides of the platform (42). The height of the reset baffles (31) is greater than the vertical distance from the upper surface of the platform (42) to the upper surface of the base (41) to form a sample testing space.

2. The impact resistance testing device for resilient flooring for building decoration according to claim 1, characterized in that, The impact support frame (11) includes a first base (111), a portal support frame (112), a screw (113), and a first bearing (114). The first base (111) is fixedly connected to the base (41), and the portal support frame (112) is fixedly connected to the first base (111). The screw (113) is perpendicular to the first base (111), and one end of the screw (113) rotates through the first bearing (114) and the top of the portal support frame (112). The other end of the screw (113) is rotatably connected to the first base (111) via the first bearing (114); one end of the impact body suspension platform (12) is provided with a connecting sleeve, and the inner wall of the connecting sleeve is provided with a threaded hole (121). The screw (113) is threadedly connected to the threaded hole (121). When the screw (113) rotates, the connecting sleeve slides along the axial direction of the screw (113), thereby driving the impact body suspension platform (12) to rise and fall.

3. The impact resistance testing device for resilient flooring for building decoration according to claim 2, characterized in that, The side of the portal frame (112) is provided with a vertical measuring ruler (1121) for measuring the height of the impact body suspension platform (12).

4. The impact resistance testing device for resilient flooring for building decoration according to claim 1, characterized in that, The rotary drive mechanism (22) is a rotary motor. The rotary support frame (21) includes a second base (211) and a rotary shaft (212). The second base (211) is fixedly connected to the base (41). The rotary motor is fixedly connected to the second base (211). The output shaft of the rotary motor is connected to the rotary shaft (212) in a transmission connection.

5. The impact resistance testing device for resilient flooring for building decoration according to claim 4, characterized in that, The positioning component (24) is a locking screw. The bottom of the magnetic retaining baffle (23) is provided with a connecting block (231). The connecting block (231) can slide axially along the outer wall of the rotating shaft (212). The outer wall of the connecting block (231) is provided with a locking thread hole (2311) in the radial direction of the rotating shaft (212). The locking screw is threadedly connected to the locking thread hole (2311). The end of the locking screw abuts against the rotating shaft (212) to fix the magnetic retaining baffle (23).

6. The impact resistance testing device for resilient flooring for building decoration according to claim 4, characterized in that, The rotating shaft (212) is a telescopic rod, which includes a fixed section (2121) and a telescopic section (2122). The fixed section (2121) is connected to the output shaft of the rotary motor (213) for transmission, and the telescopic section (2122) is slidably sleeved with the fixed section (2121).

7. The impact resistance testing device for resilient flooring for building decoration according to claim 5, characterized in that, It also includes a controller. A pressure sensor (421) is provided inside the platform (42). The pressure sensor (421) is used to detect the pressure signal generated when the impactor acts on the sample and send the pressure signal to the controller. The controller is configured to start the rotary motor of the secondary impact interception component (2) when the pressure value detected by the pressure sensor changes from greater than a first threshold to less than a second threshold, so that the rotary shaft (212) drives the magnetic retaining baffle (23) to rotate along the axial direction of the rotary shaft (212) to the top of the sample test space to intercept the impactor.

8. The impact resistance testing device for resilient flooring for building decoration according to claim 2, characterized in that, The sample reset assembly (3) further includes a linear drive mechanism (32), which is fixedly connected to the base (41). The output end of the linear drive mechanism (32) is connected to the reset baffle (31) for driving the reset baffle (31) to reciprocate along a straight line.

9. The impact resistance testing device for resilient flooring for building decoration according to claim 1, characterized in that, It also includes a camera (5), the base (41) is provided with a countersunk groove (43), the camera (5) is fixedly installed in the countersunk groove (43), the lens of the camera (5) faces the sample on the table (42) and is used to collect the position image of the sample to determine whether the sample has deviated.

10. A method for testing the impact resistance of resilient flooring for building decoration, using the impact resistance testing device for resilient flooring for building decoration as described in any one of claims 1-9, characterized in that, include: Place the test sample of the elastic floor on the upper surface of the table (42), adjust the impact body suspension platform (12) to the preset height, place the impact body on the lower surface of the impact body suspension platform (12), and keep it in the state of waiting to be released; The reset baffle (31) of the sample reset assembly (3) is controlled to move to a position away from the center of the sample, and the impact body is released so that the impact body falls freely to impact the elastic floor sample. The pressure signal of the impactor acting on the elastic floor sample is detected by the pressure sensor (421). When the pressure value detected by the pressure sensor (421) changes from greater than the first threshold to less than the second threshold, the secondary impact interception component (2) is controlled to act to intercept the impactor. The camera (5) acquires the position image of the elastic floor and determines whether the elastic floor sample has deviated. When the deviation occurs, the reset baffle (31) is controlled to move towards the center of the sample to push the elastic floor sample to reset.

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