Multi-field coupling test apparatus for synthetic material sports flooring

Abstract

The utility model discloses a multi -field coupling test equipment for synthetic material sports ground surface layer belongs to material performance test equipment technical field. The equipment aims at solving the problem that it is difficult to simulate the heat field, mechanical field and environmental field to the comprehensive performance test of synthetic material surface layer under the real use environment in single equipment. Including: test chamber, heat field simulation device, mechanical field simulation device and environmental field simulation device, the bottom of test chamber is equipped with bottom bearing platform and sample tank, heat field simulation device contains bottom heating element and the top radiation heater of installation through elevating system, mechanical field simulation device contains vertical linear drive mechanism and pressure head, and environmental field simulation device includes humidifier and sand dust thrower that sand dust is evenly scattered to the cavity through distribution pipe, and the inside of distribution pipe is equipped with the flow guide rod that is rotated by the drive motor. The equipment is mainly used for the comprehensive environmental durability and performance test to synthetic material sports ground surface layer.

Description

Technical Field

[0001] This utility model belongs to the technical field of material performance testing equipment, and in particular relates to a multi-field coupling testing device for synthetic material sports field surface layers. Background Technology

[0002] In the mid-20th century, with breakthroughs in polymer materials, synthetic materials such as polyurethane and ethylene propylene diene monomer (EPDM) began to replace traditional asphalt and concrete as the new generation of paving materials, marking the modernization of sports field surfaces. Initially, synthetic sports field surfaces were primarily used in professional sports stadiums, where their excellent elasticity, impact resistance, and high plasticity met the specific performance requirements of track and field and ball sports. As a core component of modern sports facilities, synthetic sports field surfaces (such as synthetic running tracks, artificial turf, and silicone PU courts) have become the preferred materials for schools, public sports stadiums, community fitness centers, and professional competition venues, playing a vital role in ensuring athletic performance, protecting public health, and achieving efficient use of social resources. The quality of materials selected for sports venues directly impacts the development level and popularity of modern sports. Although synthetic sports field surfaces have been widely adopted under the dual impetus of policy and market forces, their safety and durability still face significant challenges.

[0003] Regarding safety, to effectively regulate the nationwide market for synthetic material sports field surfaces, ensure product quality, and protect the health of primary and secondary school students, a series of national standards (GB36246-2018 "Synthetic Material Sports Field Surfaces for Primary and Secondary Schools", GB / T 14833-2020 "Synthetic Material Running Track Surfaces", and GB / T 22517.6-2020 "Requirements and Test Methods for Sports Venues - Part 6: Athletics Fields", etc.) have set clear limits on the odor and harmful substance content of synthetic material sports field surfaces. While the environmental performance of synthetic material sports field surfaces has improved, their service life has decreased. To assess the service life of synthetic running tracks, the existing standard (GB 36246-2018 "Synthetic Material Sports Field Surfaces for Primary and Secondary Schools") requires 500 hours of xenon lamp irradiation for testing the aging resistance of synthetic running tracks. This testing method is characterized by long assessment times and insufficient timeliness. Furthermore, it neglects the impact of natural environmental factors such as temperature, humidity, and dust on the lifespan of synthetic material sports field surfaces. Summary of the Invention

[0004] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0005] This invention aims to address the lack of existing equipment capable of comprehensively simulating real outdoor environments for accelerated aging and performance testing of synthetic material sports field surfaces. It provides a multi-field coupling testing device integrating thermal, mechanical, and environmental fields. This device features: better simulation of the usage conditions of synthetic material sports fields in real-world environments; accelerated aging of synthetic material sports fields through coupling factors, reducing testing time and improving testing efficiency.

[0006] Therefore, the technical solution provided by this utility model is as follows: A multi-field coupling testing device for synthetic material sports field surface layers includes: The test chamber includes a bottom support fixedly mounted on its bottom, with a sample slot on the upper surface of the bottom support for positioning and placing the sample; a thermal field simulation device including a bottom heating element disposed inside the bottom support and directly below the sample slot, and a top radiant heater disposed directly above the sample, the top radiant heater being installed in the test chamber via a lifting mechanism; a mechanical field simulation device including a vertically arranged linear drive mechanism, the output end of which passes through the top radiant heater and is connected to a pressure head for applying pressure to the sample surface, the pressure head being vertically aligned with the sample slot; and an environmental field simulation device including a dust dispenser and a heating element disposed on the side wall of the test chamber. A humidifier; an environmental field simulation device, the environmental field simulation device including a dust generator and a humidifier, the humidifier being connected to a nozzle disposed on the side wall of the test chamber via a water pipe, the nozzle being disposed near the top of the test side wall; the outlet of the dust generator being connected to a distribution pipe located inside the test chamber via a connecting pipe, the distribution pipe being disposed vertically on the side wall of the test chamber, the distribution pipe having an elongated outlet slit along its length on the side facing the test chamber, a rotatable guide rod disposed axially parallel to the outlet slit inside the distribution pipe, the guide rod being parallel to the outlet slit, and one end of the guide rod passing through the end of the distribution pipe via a bearing and connected to the output shaft of an external drive motor, the guide rod being located below the nozzle.

[0007] Preferably, the top radiant heater is an infrared radiant heater cover, and the lifting mechanism includes a pair of guide rods vertically fixed in the test chamber, a lifting plate fixedly connected to the top radiant heater, and a drive unit that drives the lifting plate to move along the guide rods.

[0008] Preferably, the linear drive mechanism is an electric push rod fixedly mounted on the lifting plate.

[0009] Preferably, the bottom heating element is an electric heating plate embedded inside the bottom support, and a metal heat exchange plate is laid between the electric heating plate and the sample tank.

[0010] Preferably, the outer periphery of the top radiant heater is surrounded by a reflective heat insulation cover fixed to the lifting mechanism.

[0011] Preferably, the bottom inner surface of the test chamber is an inclined plane that slopes towards the center, with the center being higher and one side lower. A drain hole is provided at the lowest point of the inclined plane, and the drain hole is connected to a water collection box located outside the test chamber through a pipe.

[0012] Preferably, the guide rod has guide vanes spirally wound along its axial direction on its surface, and a gap is left between the edge of the guide vanes and the inner wall of the distribution pipe; the top and bottom of the distribution pipe are sealed respectively, and the two ends of the guide rod are respectively installed at the top and bottom of the distribution pipe through sealed bearings.

[0013] The embodiments of this utility model include at least the following beneficial effects: This invention integrates thermal, mechanical, and environmental field simulation devices into a single test chamber, constructing a comprehensive testing platform capable of simulating the actual service environment of a sports field surface. This equipment enables synchronous or sequential coupling of multiple physical fields, making the test conditions closer to reality. This allows for a more accurate and reliable assessment of the durability and mechanical property changes of synthetic materials under complex coupled environments.

[0014] This invention utilizes a lifting mechanism comprised of a guide rod, a lifting plate, and a drive unit to control the top radiant heater, achieving precise and stable adjustment of the heater's height. This not only allows for flexible adjustment of the distance between the radiant heat source and the sample surface to control the heat flux density, meeting the radiation intensity requirements of different testing standards or materials, but also ensures the stability of the heater during the lifting process, avoiding the impact of positional deviation on the uniformity of the testing area.

[0015] This invention creatively integrates mechanical loading and heating functions by directly fixing the linear drive mechanism to the lifting plate that drives the top radiant heater. This structure simplifies the independent moving parts inside the device, ensuring that the pressure head remains aligned with the sample tank at all times, guaranteeing the accuracy of the loading direction. Simultaneously, the entire loading system moves synchronously with the lifting plate, avoiding interference with the heater and other components, thus improving the compactness and reliability of the equipment.

[0016] This invention utilizes a metal heat spreader placed between the bottom heating element and the sample tank, leveraging the excellent thermal conductivity of metal to rapidly diffuse heat from a point or line heat source into a uniform thermal field. This effectively eliminates localized overheating or cold spots at the bottom of the sample caused by uneven heating of the heating element itself, ensuring temperature consistency throughout the entire heated area and laying a solid foundation for obtaining accurate and repeatable thermal aging test data.

[0017] This invention effectively reflects infrared radiation scattered in all directions back to the core testing area by setting a reflective heat shield around the top radiant heater, significantly improving thermal energy utilization. Simultaneously, this heat shield acts as a thermal barrier, reducing radiative heat transfer to the test chamber walls and other precision components (such as drive motors and sensors), thus playing multiple positive roles in protecting the equipment, maintaining stable ambient temperature within the chamber, and reducing energy consumption.

[0018] This invention provides an efficient and automatic drainage channel for the interior of the test chamber by designing the bottom inner surface as an inclined slope and incorporating drainage holes and a water collection box. This structure can promptly drain condensate generated during the humidification process or residual liquid after equipment cleaning, effectively preventing water accumulation within the chamber. This avoids interference with humidity control in the test environment and potential corrosion of the bottom components of the equipment, ensuring a clean test environment and extending the equipment's lifespan.

[0019] This invention utilizes guide vanes in the distribution pipe to disperse and propel sand and dust along a spiral trajectory, achieving uniform transport and diffusion along the entire length of the pipe. A gap is left between the edge of the guide vanes and the inner wall of the distribution pipe, ensuring effective agitation and transport of the sand and dust while preventing sand particles from being squeezed, ground, or blocked between the vanes and the pipe wall, thus ensuring smooth flow of the sand and dust in their original particle state. By sealing the top and bottom of the distribution pipe and installing the guide rod using sealed bearings, a closed transport environment is created. This structure effectively prevents sand and dust leakage from the ends of the distribution pipe, ensuring that all sand and dust can be utilized through the outlet, improving the efficiency and control accuracy of sand and dust delivery, and preventing sand and dust leakage from contaminating or jamming other components in the test chamber (such as the lifting mechanism and linear drive mechanism). Simultaneously, the structure with supports at both ends enhances the stability of the guide rod's rotation, allowing it to operate smoothly even under uneven sand and dust loads, further ensuring the uniformity of sand and dust distribution.

[0020] In summary, the synergistic effects of these improvements in this invention jointly solve the technical problems of uneven dust distribution and easy clogging in the prior art, enabling the simulation of a more realistic and uniform wind and sand environment, thereby significantly improving the accuracy of environmental field simulation and the reliability of test results.

[0021] Other advantages, objectives, and features of the embodiments of this utility model will be apparent in part from the following description, and in part will be understood by those skilled in the art through study and practice of the embodiments of this utility model. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a multi-field coupling test device for a synthetic material sports field surface layer, according to one embodiment of this utility model.

[0023] Figure 2 This is a cross-sectional structural diagram of the distribution pipe in one embodiment of the present invention. Detailed Implementation

[0024] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement them based on the description.

[0025] According to one embodiment of this utility model, this utility model proposes a multi-field coupling testing device for synthetic material sports field surface layers, such as... Figure 1 , Figure 2 As shown, it includes: The test chamber 100 has a bottom support fixedly installed at its bottom, and the upper surface of the bottom support is provided with a sample slot 2 for positioning and placing the sample. A thermal field simulation device, comprising a bottom heating element 1 disposed inside the bottom support and located directly below the sample tank 2, and a top radiation heater 4 disposed directly above the sample, the top radiation heater 4 being installed in the test chamber 100 via a lifting mechanism; A mechanical field simulation device includes a vertically arranged linear drive mechanism. The output end of the linear drive mechanism passes through the top radiation heater 4 and is connected to a pressure head 3 for applying pressure to the sample surface. The pressure head 3 is arranged vertically and vertically corresponding to the sample groove 2. An environmental field simulation device includes a dust generator and a humidifier 6. The humidifier 6 is connected to a nozzle mounted on the side wall of the test chamber 100 via a water pipe. The nozzle is located on the upper part of the test side wall. The outlet of the dust generator is connected to a distribution pipe 5 located inside the test chamber 100 via a connecting pipe. The distribution pipe 5 is vertically mounted on the side wall of the test chamber 100. A long strip-shaped outlet slit is opened along the length of the side of the distribution pipe 5 facing the test chamber 100. A rotatable guide rod is arranged parallel to the outlet slit along its axial direction inside the distribution pipe 5. The guide rod is parallel to the outlet slit, and one end of the guide rod passes through the end of the distribution pipe 5 via a bearing and is connected to the output shaft of an external drive motor. The guide rod is located below the nozzle.

[0026] One feasible implementation is as follows: The device includes a test chamber 100, with a bottom support fixedly mounted at its bottom. A sample slot 2 for positioning and placing a sample is provided on the upper surface of the bottom support. The thermal field simulation device includes a bottom heating element 1 disposed inside the bottom support and directly below the sample slot 2, and a top radiant heater 4 disposed directly above the sample. The top radiant heater 4 is mounted inside the test chamber 100 via a lifting mechanism. The mechanical field simulation device includes a vertically arranged linear drive mechanism. The output end of the linear drive mechanism passes through the top radiant heater 4 and is connected to a pressure head 3 for applying pressure to the sample surface. The pressure head 3 is vertically aligned with the sample slot 2. The environmental field simulation device includes a dust emitter and a humidifier 6 disposed on the side wall of the test chamber 100. The discharge port of the dust generator is connected to a distribution pipe 5 located inside the test chamber 100 via a connecting pipe. The distribution pipe 5 is set vertically on the side wall of the test chamber 100. A long strip-shaped outlet slit is opened on the side of the distribution pipe 5 facing the test chamber 100 along its length. A rotatable guide rod is set inside the distribution pipe 5 along its axial direction parallel to the outlet slit. The guide rod is set parallel to the outlet slit, and one end of the guide rod passes through the end of the distribution pipe 5 through a sealed bearing and is connected to the output shaft of an external drive motor.

[0027] Existing sports field surface testing equipment typically only simulates a single factor. For example, a common device might only have bottom heating to simulate ground temperature changes, but lacks simulation of radiant heating from above, which doesn't reflect the actual solar radiation exposure experienced by materials in real-world use. Another device might have mechanical loading capabilities, but its loading mechanism is independent of the heating system, making it difficult to achieve simultaneous thermo-mechanical coupling. Regarding environmental simulation, existing devices might simply pour or blow sand into the chamber through a simple opening, resulting in extremely uneven sand distribution on the sample surface. This fails to simulate the uniform effect of sand dispersion in a real environment and is prone to clogging near the loading port.

[0028] This invention constructs a comprehensive testing platform capable of simultaneously simulating thermal, mechanical, and dusty / humid environments. By combining bottom heating with top radiant heating, it more realistically reproduces the bidirectional thermal effects experienced by materials in actual environments. The mechanical loading mechanism, integrated through the radiant heater, enables simultaneous mechanical loading under thermal conditions. The environmental field simulation device, particularly the distribution pipe 5 with a rotatable guide rod, evenly distributes dust vertically into the test space, effectively improving the uniformity of dust distribution and avoiding localized accumulation and blockage. This makes the durability testing conditions for synthetic sports field surfaces closer to their actual service conditions, resulting in more accurate and reliable test results.

[0029] According to one embodiment of the present invention, as a preferred embodiment, a multi-field coupling test device for a synthetic material sports field surface layer is provided, wherein the top radiation heater 4 is an infrared radiation heating cover, and the lifting mechanism includes a pair of guide rods vertically fixed in the test chamber 100, a lifting plate fixedly connected to the top radiation heater 4, and a drive unit for driving the lifting plate to move along the guide rods.

[0030] For example, in a multi-field coupling testing device for a synthetic material sports field surface, the top radiant heater 4 is in the form of an infrared radiant heating hood. This heating hood is installed via a lifting mechanism. The lifting mechanism includes a pair of guide rods vertically fixed within the test chamber 100, a lifting plate fixedly connected to the top radiant heater 4, and a drive unit that drives the lifting plate along the guide rods. The drive unit may be a hydraulic cylinder 7.

[0031] This invention achieves precise and stable adjustment of the height of the top radiant heater 4 by employing a guide rod-guided lifting mechanism. This allows the equipment to flexibly simulate radiant thermal environments of varying intensities, meeting diverse testing needs. The lifting plate structure ensures that the heater does not shift or rotate horizontally during lifting, guaranteeing that the thermal field always accurately covers the test sample below, thereby improving the accuracy and repeatability of the test.

[0032] According to one embodiment of the present invention, preferably, the linear drive mechanism is an electric push rod fixedly mounted on the lifting plate. The electric push rod is connected via wiring to a linear drive motor located on the outside of the test chamber.

[0033] For example, in the above-mentioned device, the linear drive mechanism is an electric push rod fixedly mounted on the lifting plate.

[0034] This invention achieves linkage between the mechanical loading module and the heating module by directly fixing the linear drive mechanism to the lifting plate of the drive heater. When the lifting plate moves to adjust the heating height, the pressure head 3 also moves synchronously, thus maintaining a precise alignment with the sample tank 2 below. This integrated design simplifies the equipment operation process, eliminates repetitive positioning steps, and fundamentally ensures that the mechanical load can be accurately applied to the designated area of ​​the sample at any heating height, improving the automation level of the equipment and the reliability of the test.

[0035] According to one embodiment of the present invention, preferably, the bottom heating element 1 is an electric heating plate embedded inside the bottom support, and a metal heat exchange plate is laid between the electric heating plate and the sample tank 2.

[0036] For example, in the above-mentioned device, the bottom heating element 1 is an electric heating plate embedded in the bottom support, and a metal heat exchange plate is laid between the electric heating plate and the sample tank 2.

[0037] This invention adds a metal heat spreader between the electric heating plate and the sample tank 2. Utilizing the excellent thermal conductivity of metal, it rapidly diffuses point or linear heat sources into a uniform surface heat source. This heat spreader effectively absorbs and redistributes heat from the electric heating plate, compensating for microscopic heating unevenness and poor contact. This creates a highly uniform thermal field at the bottom of the sample tank 2, ensuring uniform heating of the sample and providing crucial support for obtaining accurate and reliable thermal aging data.

[0038] According to one embodiment of the present invention, preferably, the outer periphery of the top radiant heater 4 is surrounded by a reflective heat insulation cover fixed to the lifting mechanism.

[0039] For example, in a multi-field coupling test device for a synthetic material sports field surface layer, a reflective heat insulation cover fixed to a lifting mechanism surrounds the outer periphery of the top radiant heater 4.

[0040] This invention effectively reflects radiant heat energy that would otherwise be directed outwards back to the core testing area by installing a reflective heat shield around the top radiant heater 4. This significantly reduces useless heat dissipation, allowing heat energy to be more concentrated on the sample surface and improving heating efficiency. Simultaneously, the heat shield acts as a physical barrier, preventing direct thermal radiation from reaching sensitive components, protecting the equipment, and helping to maintain a relatively stable ambient temperature within the testing chamber 100, creating more controllable testing conditions.

[0041] According to one embodiment of the present invention, preferably, the bottom inner surface of the test chamber 100 is an inclined plane that slopes towards the center, with the center being higher and one side lower. A drain hole is provided at the lowest point of the inclined plane, and the drain hole is connected to a water collection box located outside the test chamber 100 through a pipe.

[0042] For example, in the above-mentioned device, the bottom inner surface of the test chamber 100 is an inclined plane that slopes towards the center, with the center being higher and one side lower. A drain hole is opened at the lowest point of the inclined plane, and the drain hole is connected to a water collection box located outside the test chamber 100 through a pipe.

[0043] This invention provides an automatic drainage channel for liquid within the test chamber 100 by designing the bottom of the chamber as an inclined slope and incorporating a drainage system. Once liquid is generated, it flows naturally by gravity to the lowest drainage hole and eventually collects in an external collection box. This structure effectively and promptly removes accumulated liquid, keeping the bottom of the chamber dry and clean, thus ensuring the accuracy of environmental humidity simulation and avoiding various negative impacts that accumulated liquid may have on the equipment and samples. According to one embodiment of the present invention, preferably, the guide rod has guide vanes spirally wound along its axial direction on its circumferential surface, and a gap is left between the edge of the guide vanes and the inner wall of the distribution pipe 5; the top and bottom of the distribution pipe 5 are sealed respectively, and the two ends of the guide rod are respectively installed on the top and bottom of the distribution pipe 5 through sealed bearings.

[0044] As an example, in the above-mentioned device, the guide rod inside the distribution pipe 5 of the environmental field simulation device has guide vanes spirally wound along its axial direction on its surface, and a gap is left between the edge of the guide vanes and the inner wall of the distribution pipe 5. The top and bottom of the distribution pipe 5 are sealed respectively, and the two ends of the guide rod are respectively mounted on the top and bottom of the distribution pipe 5 through sealed bearings. One end of the guide pipe is connected to a drive motor located outside the test chamber that can drive its rotation.

[0045] This invention utilizes spiral guide vanes on a guide rod. When driven by a motor, these vanes continuously push sand and dust from the feed end to the outlet end. The guide vanes agitate and propel the sand and dust, ensuring uniform dispersion along the entire length of the distribution pipe 5. The gap between the vanes and the pipe wall prevents excessive compression that could cause the sand and dust to break or become stuck. The sealed ends of the distribution pipe 5, supported by bearings, prevent sand and dust leakage and contamination of the equipment, while also ensuring the stability of the guide rod's rotation. These improvements collectively achieve uniform, stable, and controllable distribution of sand and dust along the length of the outlet.

[0046] According to one preferred embodiment of this invention, a control unit is further included. This control unit is electrically connected to the thermal field simulation device, the mechanical field simulation device, and the environmental field simulation device, and is used to synchronously control the application of the thermal field, mechanical field, and environmental field. This invention, by introducing a unified control unit, achieves centralized management and synchronous control of the thermal field, mechanical field, and environmental field simulation devices. This control unit can precisely coordinate the application sequence, duration, and interaction relationships of each field quantity according to a preset program. This allows the equipment to simulate more realistic and complex service conditions, such as synchronously applying mechanical loads and introducing dust in a high-temperature environment, thereby more accurately revealing the performance evolution of the synthetic material sports field surface layer under multi-field coupling, significantly improving the scientific rigor and reliability of the test.

[0047] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the embodiments of the present invention. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the embodiments of the present invention are not limited to the specific details and illustrations shown and described herein.

Claims

1. A multi-field coupling testing device for synthetic material sports field surface layers, characterized in that, include: The test chamber has a bottom support fixedly installed at its bottom, and the upper surface of the bottom support is provided with a sample slot for positioning and placing the sample. A thermal field simulation device, comprising a bottom heating element disposed inside the bottom support and located directly below the sample slot, and a top radiation heater disposed directly above the sample, wherein the top radiation heater is installed in the test chamber via a lifting mechanism; A mechanical field simulation device includes a vertically arranged linear drive mechanism. The output end of the linear drive mechanism passes through the top radiation heater and is connected to a pressure head for applying pressure to the sample surface. The pressure head is arranged vertically and vertically corresponding to the sample groove. An environmental field simulation device includes a dust generator and a humidifier. The humidifier is connected to a nozzle mounted on the side wall of the test chamber via a water pipe. The nozzle is positioned slightly above the test side wall. The outlet of the dust generator is connected to a distribution pipe located inside the test chamber via a connecting pipe. The distribution pipe is vertically mounted on the side wall of the test chamber. A long, narrow outlet slit is formed along the length of the distribution pipe facing the test chamber. A rotatable guide rod is mounted axially parallel to the outlet slit inside the distribution pipe. One end of the guide rod passes through the end of the distribution pipe via a bearing and is connected to the output shaft of an external drive motor. The guide rod is located below the nozzle.

2. The multi-field coupling testing device for synthetic material sports field surface layers as described in claim 1, characterized in that, The top radiant heater is an infrared radiant heating cover, and the lifting mechanism includes a pair of guide rods vertically fixed in the test chamber, a lifting plate fixedly connected to the top radiant heater, and a drive unit that drives the lifting plate to move along the guide rods.

3. The multi-field coupling testing device for synthetic material sports field surface layers as described in claim 2, characterized in that, The linear drive mechanism is an electric push rod that is fixedly installed on the lifting plate.

4. The multi-field coupling testing device for synthetic material sports field surface layers as described in claim 1, characterized in that, The bottom heating element is an electric heating plate embedded inside the bottom support, and a metal heat exchange plate is laid between the electric heating plate and the sample tank.

5. The multi-field coupling test device for synthetic material sports field surface layer as described in claim 2, characterized in that, The outer periphery of the top radiant heater is surrounded by a reflective heat insulation cover fixed to the lifting mechanism.

6. The multi-field coupling testing device for synthetic material sports field surface layers as described in claim 1, characterized in that, The bottom inner surface of the test chamber is an inclined plane that slopes towards the center, with the center being higher and one side lower. A drain hole is provided at the lowest point of the inclined plane, and the drain hole is connected to a water collection box located outside the test chamber through a pipe.

7. The multi-field coupling testing device for synthetic material sports field surface layers as described in claim 1, characterized in that, The guide rod has guide vanes spirally wound along its axial direction on its surface, and there is a gap between the edge of the guide vanes and the inner wall of the distribution pipe; the top and bottom of the distribution pipe are sealed respectively, and the two ends of the guide rod are respectively installed at the top and bottom of the distribution pipe through sealed bearings.

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