A grass filament wear resistance detection device

Abstract

The application discloses a grass filament wear resistance detection device, which comprises a placing seat for bearing a grass filament sample, a support plate vertically arranged on the side of the placing seat, a lifting driving mechanism arranged on the support plate, and a compression roller assembly connected with the output end of the lifting driving mechanism and driven by the lifting driving mechanism to approach or move away from the placing seat. The precision pressure servo system composed of the lifting group and the high-precision linear guide rail can apply and maintain highly stable and accurately set positive pressure to the rotating compression roller, eliminating the pressure fluctuation caused by human factors in traditional manual operation. Meanwhile, the driving motor ensures that the rotating speed and the number of rotations of the rotating compression roller are accurately controlled, so that the test result has high repeatability and comparability, and reliable data support is provided for objective evaluation of product quality.

Description

Technical Field

[0001] This application relates to the field of artificial grass fiber technology, specifically a grass fiber abrasion resistance testing device. Background Technology

[0002] Artificial turf, as an important alternative to natural turf, has been widely used in sports stadiums, public green spaces, courtyard landscapes, and even commercial spaces due to its advantages such as strong weather resistance, low maintenance costs, and long service life. Grass fibers, as the core material constituting the surface layer of artificial turf, directly determine the durability, safety, and appearance retention of the entire turf system. Among the many performance indicators of grass fibers, abrasion resistance is the most critical, directly affecting the effective service life of the turf product and its functional performance under long-term use.

[0003] Currently, the industry suffers from inconsistent methods and a lack of standards in assessing the abrasion resistance of grass fibers. Many testing methods rely on operators using hand tools for reciprocating friction or simple rotational friction. These methods are not only inefficient, but also difficult to maintain a constant pressure during testing. Fluctuations in human operation introduce significant errors, resulting in poor repeatability and comparability of test results. Secondly, the friction speed, trajectory, and frequency are difficult to control and quantify precisely, making it impossible to realistically simulate the continuous and complex rolling and friction loads from different directions that grass fibers experience in actual use, such as the combined mechanical effects of an athlete's running, sudden stops, and turns. Summary of the Invention

[0004] The technical problem to be solved by this application is to overcome the existing defects and provide a grass fiber abrasion resistance testing device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a grass fiber abrasion resistance testing device, comprising: a placement seat for supporting grass fiber samples;

[0006] A support plate is erected on the side of the placement seat;

[0007] A lifting drive mechanism is mounted on the support plate;

[0008] The pressure roller assembly is connected to the output end of the lifting drive mechanism to move closer to or further away from the placement seat under the drive of the lifting drive mechanism.

[0009] The pressure roller assembly includes a drive motor, an intermediate shaft driven to rotate by the drive motor, an intermediate support plate fixed to the lower end of the intermediate shaft, and a rotating pressure roller mounted on the intermediate support plate via a connecting structure.

[0010] The support plate is provided with a guide mechanism, and the pressure roller assembly is slidably connected to the guide mechanism through a sliding frame, so that the pressure roller assembly can be stably raised and lowered in a direction perpendicular to the placement seat.

[0011] As a preferred technical solution of this application, the lifting drive mechanism includes two lifting groups symmetrically arranged on the upper end of the support plate, the telescopic ends of the lifting groups are connected to a motor mounting plate, and the drive motor is fixedly mounted on the motor mounting plate.

[0012] As a preferred technical solution of this application, the guiding mechanism is composed of a sliding groove and guide rails on both sides of the support plate, a middle cross brace is provided on one side of the guide rail, and a motor mounting plate is provided between the middle cross braces.

[0013] As a preferred technical solution of this application, the connection structure includes a sliding groove disposed on the intermediate support plate and a top block fixed to the upper end of the pressure roller and slidably embedded in the sliding groove.

[0014] As a preferred technical solution of this application, the connection structure further includes a side plate disposed at the end of the intermediate support plate and an adjusting shaft screwed into the side plate. The end of the adjusting shaft is rotatably connected to the top block. By rotating the adjusting shaft, the pressure roller can be driven to move along the sliding groove to adjust its radial position relative to the intermediate support plate.

[0015] As a preferred technical solution of this application, the intermediate support plate is a cross-shaped structure or a star-shaped structure.

[0016] As a preferred technical solution of this application, the surface of the placement seat is provided with a clamp assembly for fixing the grass fiber sample.

[0017] As a preferred technical solution of this application, the surface of the pressure roller is covered with a wear-resistant material layer.

[0018] Compared with existing technologies, the advantages of this application are as follows: This application, through a precision pressure servo system composed of a lifting assembly and a high-precision linear guide rail, can apply and maintain a highly stable and precisely settable positive pressure on the pressure roller, eliminating pressure fluctuations caused by human factors in traditional manual operation. Simultaneously, the drive motor ensures precise control of the rotation speed and number of rotations of the pressure roller. This guarantees extremely high repeatability and comparability of test results, providing reliable data support for the objective evaluation of product quality.

[0019] A uniformly rotating pressure roller continuously rolls and rubs the grass fiber sample fixed on a flat surface. This better simulates the complex rolling and shear stresses generated by people running, stopping suddenly, and turning in real-world usage scenarios. Compared to simple reciprocating friction, the test conditions are closer to the actual stress state, resulting in more accurate test results.

[0020] The intermediate support plate adopts a cross-shaped or multi-arm-shaped structure design, allowing multiple pressure rollers to be installed simultaneously. This enables parallel testing of multiple areas of the same sample or different samples during the testing process, or comparative testing using pressure rollers of different specifications, greatly improving testing efficiency. The radial position of each pressure roller can be steplessly adjusted by turning the adjusting shaft, allowing the device to flexibly adapt to the requirements of different testing standards and to perform targeted testing on specific points of interest on the sample, thus broadening its applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this application;

[0022] Figure 2 This is the main view of this application;

[0023] Figure 3 This is the left view of this application;

[0024] Figure 4 This is a top view of this application;

[0025] Figure 5 This is a partial structural diagram of this application.

[0026] In the diagram: 1. Placement seat, 2. Support plate, 3. Guide rail, 4. Intermediate shaft, 5. Intermediate cross brace, 6. Clamp assembly, 7. Intermediate support plate, 8. Rotary pressure roller, 9. Drive motor, 10. Side plate, 11. Adjustment shaft, 12. Lifting assembly, 13. Motor mounting plate. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0028] Please see Figure 1-5 This application provides a technical solution: a grass fiber abrasion resistance testing device that simulates the mechanical behavior of grass fibers under rolling, friction and other stresses in actual use, and performs quantitative abrasion resistance performance testing.

[0029] The placement seat 1 forms the base of the device and has high structural rigidity and stability, effectively avoiding errors caused by its own vibration during testing. The top surface of the placement seat 1 is constructed as a smooth plane to simulate the stress on the grass fibers under actual laying conditions.

[0030] Multiple pairs of threaded mounting holes are parallel to each other along the two sides of the plane. The clamp assembly 6 is fixed to these mounting holes by bolts. The clamp assembly 6 specifically includes an alloy pressure strip that matches the contour of the plane and a fastening bolt passing through the pressure strip. During operation, the two ends of the straw sample are laid flat on the plane, and then the fastening bolts are tightened. The pressure strip evenly and firmly presses the edges of the sample onto the placement seat 1, effectively preventing the sample from slipping or lifting during the test and ensuring uniform stress in the test area.

[0031] The bracket plate 2 is vertically and rigidly fixed to one side of the placement seat 1 by means of the flange at its bottom and high-strength internal hex bolts.

[0032] The guiding mechanism consists of a linear guide rail 3 and a sliding groove on the lateral support frame 2. The guide rail 3 is slidably disposed within the sliding groove of the support plate 2 and is symmetrically distributed on both sides of the center line of the placement seat 1.

[0033] The intermediate cross brace 5 is connected to one side of the guide rail 3, ensuring that the intermediate cross brace 5 makes precise linear movement along the guide rail 3 in the vertical plane, eliminating the possibility of lateral overturning.

[0034] The lifting drive mechanism includes two lifting assemblies 12. They are symmetrically and vertically fixed to the top of the support plate 2, with their push rods extending downwards. The motor mounting plate 13 is bolted to the ends of the push rods of the two lifting assemblies 12 at both ends, thus forming a stable suspended platform.

[0035] The drive motor 9 is fixed to the upper surface of the motor mounting plate 13 by its own flange, and its output shaft passes through the through hole on the motor mounting plate 13.

[0036] The upper end of the intermediate shaft 4 is coaxially connected to the output shaft of the drive motor 9 via a coupling to compensate for possible minor alignment errors. The middle portion of the intermediate shaft 4 passes through a pre-set bearing mounting hole in the center of the motor mounting plate 13. A set of combined ball bearings is installed in this hole; the outer ring of the bearing is interference-fitted with the circular hole in the motor mounting plate 13, while the inner ring is transition-fitted with the intermediate shaft 4. This allows the intermediate shaft 4 to rotate freely within the motor mounting plate 13, realizing both rotary and linear lifting motion.

[0037] The intermediate support plate 7 is rigidly fixed to the lower end of the intermediate shaft 4 by a key connection and a locking nut. In this embodiment, the intermediate support plate 7 adopts a cross-shaped structure with four radially extending arms.

[0038] Each arm has a sliding groove that extends along the length of the arm. The pressure roller 8 is fitted into the sliding groove and can slide along the length of the groove.

[0039] At the end of each arm, a side plate 10 is vertically welded. A locking nut plate is welded to the outside of the side plate 10. An adjusting shaft 11 passes sequentially through a light hole on the side plate 10 and a threaded hole on the locking nut plate. One end of the adjusting shaft 11 facing the top block on the upper surface of the pressure roller 8 is rotatably connected to the side of the top block via a miniature deep groove ball bearing. By turning the knob at the end of the adjusting shaft 11, the top block and the pressure roller 8 below it are precisely driven to move along the sliding groove, achieving stepless adjustment of the radial position of the pressure roller 8. After adjustment, turning the locking nut on the locking nut plate in the opposite direction locks the adjusting shaft 11, fixing the position of the pressure roller 8.

[0040] The roller body of the pressure roller 8 is made of stainless steel, and its surface is tightly covered with a standard polyurethane wear-resistant layer to ensure the standardization of test conditions and the comparability of results.

[0041] In use: Loosen all the fastening bolts on the clamp assembly 6 counterclockwise, lift the alloy pressure strip, lay the cut standard straw sample flat on the smooth surface of the placement seat 1, ensuring the test area is flat and wrinkle-free, and then tighten all the fastening bolts clockwise evenly to ensure the sample is firmly and evenly clamped to prevent slippage during testing. According to the test standard or experimental plan requirements, determine the test point position where the pressure roller 8 needs to be applied. For the pressure roller 8 that needs adjustment, first loosen the locking nut on its corresponding locking nut plate, and slowly turn the knob at the end of the adjusting shaft 11. Turning clockwise drives the pressure roller 8 to move outward along the arm of the intermediate support plate 7; turning counterclockwise moves it inward. This operation allows for precise adjustment of the radial position of all pressure rollers 8. After verifying the position with measuring tools, tighten the locking nuts to lock the adjusting shaft 11, thus fixing the pressure rollers 8. Input the preset pressure value, and the system will control the lifting group 12 to apply the corresponding downward pressure. Input the speed of the drive motor 9 and the test cycle. At this time, the lifting drive mechanism starts, and the two lifting groups 12 synchronously push the motor mounting plate 13 and the entire pressure roller assembly to descend smoothly. When the pressure roller 8 contacts the sample and reaches the preset pressure value, the descent stops and the pressure is maintained. The drive motor 9 then starts, driving the intermediate support plate 7 and all pressure rollers 8 to start rotating at a uniform speed through the intermediate shaft 4, continuously reciprocating and rolling the straw sample. After reaching the set total number of revolutions, the drive motor 9 automatically stops, and the lifting drive mechanism starts again, automatically raising the entire pressure roller assembly to the initial safe height. Loosen the clamp assembly 6, carefully remove the straw sample that has completed the test, and conduct subsequent evaluations of the sample, such as observing the surface wear morphology, weighing the mass loss, or using a colorimeter to measure the color change.

[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the abrasion resistance of grass fibers, characterized in that, include: Placement seat (1) is used to support the grass fiber sample; The support plate (2) is erected on the side of the placement seat (1); A lifting drive mechanism is mounted on the support plate (2); The pressure roller assembly is connected to the output end of the lifting drive mechanism to move closer to or further away from the placement seat (1) under the drive of the lifting drive mechanism. The pressure roller assembly includes a drive motor (9), an intermediate shaft (4) driven to rotate by the drive motor (9), an intermediate support plate (7) fixed to the lower end of the intermediate shaft (4), and a rotating pressure roller (8) mounted on the intermediate support plate (7) through a connecting structure. The support plate (2) is provided with a guide mechanism, and the pressure roller assembly is slidably connected to the guide mechanism through a sliding frame so that the pressure roller assembly can be stably raised and lowered in a direction perpendicular to the placement seat (1).

2. The abrasion resistance testing device for grass fibers according to claim 1, characterized in that, The lifting drive mechanism includes two lifting groups (12) symmetrically arranged on the upper end of the support plate (2). The telescopic ends of the lifting groups (12) are connected to a motor mounting plate (13). The drive motor (9) is fixedly installed on the motor mounting plate (13).

3. The abrasion resistance testing device for grass fibers according to claim 2, characterized in that, The guiding mechanism consists of a sliding groove on the support plate (2) and guide rails (3) on both sides. A middle cross brace (5) is provided on one side of the guide rail (3), and a motor mounting plate (13) is provided between the middle cross braces (5).

4. The abrasion resistance testing device for grass fibers according to claim 1, characterized in that, The connection structure includes a sliding groove disposed on the intermediate support plate (7) and a top block fixed to the upper end of the pressure roller (8) and slidably embedded in the sliding groove.

5. The abrasion resistance testing device for grass fibers according to claim 4, characterized in that, The connection structure also includes a side plate (10) disposed at the end of the intermediate support plate (7) and an adjustment shaft (11) screwed into the side plate (10). The end of the adjustment shaft (11) is rotatably connected to the top block. By turning the adjustment shaft (11), the pressure roller (8) can be driven to move along the sliding groove to adjust its radial position relative to the intermediate support plate (7).

6. The grass fiber abrasion resistance testing device according to claim 1, characterized in that, The intermediate support plate (7) has a cross-shaped structure or a star-shaped structure.

7. The abrasion resistance testing device for grass fibers according to claim 1, characterized in that, The surface of the placement seat (1) is provided with a clamp assembly (6) for fixing the grass fiber sample.

8. The abrasion resistance testing device for grass fibers according to claim 1, characterized in that, The surface of the pressure roller (8) is covered with a wear-resistant material layer.

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