Gypsum board impact resistance tester
By using a magnetic base and magnetic blocks in conjunction with a lifting platform, and utilizing linear guide rails and linear bearing sliders, the problem of steel balls being difficult to accurately hit the centroid of the specimen in existing technologies has been solved, achieving high precision and reliability in the impact resistance test of gypsum board.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ZIHENGXUAN CONSTR ENG INSPECTION CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-05
AI Technical Summary
Existing free-fall impact testing machines have difficulty ensuring that the steel ball accurately hits the centroid of the specimen surface when processing rectangular specimens, resulting in unstable and non-repeatable test results, which affects the reliability and accuracy of the test.
A magnetic base and magnetic blocks are used in conjunction with a lifting platform. The position of the lifting platform is controlled by the magnetic base, and a linear guide rail and linear bearing slider are used to guide the steel ball to accurately hit the centroid position on the surface of the specimen. At the same time, a fine adjustment mechanism and a locking mechanism are used to ensure the stability and accuracy of the steel ball.
It significantly improves the positioning accuracy of gypsum board impact tests, reduces the influence of human factors, and ensures that the steel ball accurately hits the centroid of the specimen surface in each test, thereby improving the accuracy and reliability of the test.
Smart Images
Figure CN224202879U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building material testing equipment technology, and in particular to a gypsum board impact resistance tester. Background Technology
[0002] The free-fall impact testing machine simulates the impact conditions in actual use by letting a heavy object fall freely from a certain height onto the surface of the sample. It has the advantages of simple operation and low cost.
[0003] Existing free-fall impact testing machines suffer from inaccurate positioning, especially when handling rectangular specimens. It is difficult to ensure that the steel ball accurately hits the centroid of the specimen surface, which leads to unstable and non-repeatable test results and seriously affects the reliability and accuracy of the test.
[0004] Therefore, this application provides a gypsum board impact tester. Utility Model Content
[0005] To address the shortcomings of existing technologies, this application provides a gypsum board impact testing instrument that overcomes the deficiencies of existing technologies. It aims to solve the problem of inaccurate positioning in existing free-fall impact testing machines, especially when processing rectangular specimens. It is difficult to ensure that the steel ball can accurately hit the centroid of the specimen surface, which leads to the instability and non-repeatability of the test results and seriously affects the reliability and accuracy of the test.
[0006] To achieve the above objectives, this application provides the following technical solution: a gypsum board impact tester, comprising a base, a worktable fixedly mounted on the top of the base, a steel frame fixedly mounted on one side of the worktable at the top of the base, linear guide rails fixedly mounted on both sides of the steel frame, linear bearing sliders slidably connected to the sliding ends of the linear guide rails, connecting blocks fixedly mounted on one side of each of the two sets of linear bearing sliders, a lifting platform fixedly mounted on one side of the two sets of connecting blocks, a magnetic block fixedly mounted on the top of the lifting platform at the middle of the steel frame, a magnetic seat matching the magnetic block fixedly mounted on the top of the steel frame, the magnetic seat adsorbing the magnetic block, a locking mechanism at the bottom of the lifting platform, a steel ball mounted on the lifting platform through the locking mechanism, and two sets of fine-tuning mechanisms symmetrically arranged at the top of the worktable.
[0007] By adopting the above technical solution, during the test, the specimen is first placed on the base, and the position of the specimen is adjusted by the fine-tuning mechanism so that the centroid of the specimen is located directly below the predetermined impact point. At this time, the magnetic suction seat attracts the magnetic block, and the lifting platform is located on the top side of the steel frame. Then, the magnetic suction seat is closed to cancel the magnetic attraction, thereby separating the magnetic block from the magnetic suction seat. The lifting platform and the steel ball descend synchronously to simulate free fall motion. The lifting platform slides on the sliding end of the linear guide rail through the linear bearing slider connected by the connecting block, which is used to guide the lifting platform to accurately hit the centroid position of the specimen surface when it moves down. This significantly improves the positioning accuracy of the gypsum board impact test, reduces the influence of human factors, and improves the accuracy of hitting the intersection of the two diagonals of the specimen surface in the case of rectangular specimens. This is beneficial to accurately drop the steel ball to the centroid position of the specimen surface in each test.
[0008] As a preferred technical solution of this application, the fine-tuning mechanism includes a fixed seat, which is fixedly installed on the top of the worktable. A threaded rod is threadedly connected to the middle of the fixed seat, and a stop block is fixedly installed on the opposite surfaces of the two sets of threaded rods.
[0009] By adopting the above technical solution, the position of the abutment is adjusted by rotating the threaded rod, so that the abutment pushes the gypsum board specimen on the worktable to make fine adjustments to its position, so that the centroid of the specimen is located directly below the predetermined impact point, which helps to ensure that the steel ball can accurately hit the centroid position of the specimen surface.
[0010] As a preferred technical solution of this application, the locking mechanism includes a retaining ring, which is engaged with the bottom of the steel ball. The inside of the retaining ring is threaded with screws on both sides of the steel ball. Two sets of sleeves are fixedly installed at the bottom of the lifting platform, and the screws are threaded into the inside of the sleeves.
[0011] By adopting the above technical solution, the steel ball can be secured above the retaining ring by rotating the two sets of screws downwards and moving the retaining ring downwards. Then, by rotating the two sets of screws upwards, the retaining ring moves the steel ball upwards until the steel ball comes into contact with the bottom surface of the lifting platform, which helps to ensure the stability of the steel ball.
[0012] As a preferred technical solution of this application, two sets of scales are fixedly installed on the top of the workbench, and the two sets of scales are respectively located below the abutment block.
[0013] By adopting the above technical solution, the adjustment data can be easily observed when adjusting the block using a ruler, thus improving the accuracy of the adjustment.
[0014] As a preferred technical solution of this application, a displacement sensor is fixedly installed on the top of the workbench, and a controller is fixedly installed on one side of the base, with the displacement sensor and the controller being electrically connected.
[0015] By adopting the above technical solution, using a displacement sensor of model TS-P80, the moving distance and speed of the lifting platform during descent are monitored and viewed through the controller, thereby improving the accuracy of the test results.
[0016] As a preferred technical solution of this application, the base is fixedly installed with fixing feet at all four corners, and the fixing feet are internally threaded with bolts.
[0017] By adopting the above technical solution, the base can be easily fixed to the mounting surface using fixed feet and bolts, thereby improving the stability of the device during operation.
[0018] As a preferred technical solution of this application, an electric push rod is fixedly installed inside the base. The telescopic end of the electric push rod passes through the top of the base and is located in the middle of the steel frame. The telescopic end of the electric push rod movably abuts against the bottom end.
[0019] By adopting the above technical solution, the lifting platform is raised by pushing the electric push rod, which not only allows for flexible control of the experimental height of the lifting platform, but also facilitates the attraction of the magnetic blocks and magnetic bases, thus improving its practicality during use.
[0020] As a preferred technical solution of this application, a shock-absorbing pad is fixedly installed at the bottom end of the base.
[0021] By adopting the above technical solution, vibration and noise during the test are reduced by using shock-absorbing pads, thus improving the practicality of use.
[0022] The beneficial effects of this application are:
[0023] 1. During the test, the specimen is first placed on the base, and its position is adjusted by the fine-tuning mechanism so that the centroid of the specimen is directly below the predetermined impact point. At this time, the magnetic suction seat attracts the magnetic block, and the lifting platform is located on the top side of the steel frame. Then, the magnetic suction seat is closed to cancel the magnetic attraction, thereby separating the magnetic block from the magnetic suction seat. The lifting platform, along with the steel ball, descends synchronously to simulate free fall. The lifting platform slides on the sliding end of the linear guide rail through the linear bearing slider connected by the connecting block. This guides the lifting platform to accurately hit the centroid of the specimen surface when it moves down, which significantly improves the positioning accuracy of the gypsum board impact test, reduces the influence of human factors, and improves the accuracy of hitting the intersection of the two diagonals of the specimen surface in the case of rectangular specimens. This is beneficial for accurately dropping the steel ball to the centroid of the specimen surface in each test.
[0024] 2. Adjust the position of the stop block by rotating the threaded rod, so that the stop block pushes the gypsum board specimen on the worktable to fine-tune its position, so that the centroid of the specimen is located directly below the predetermined impact point, which helps to ensure that the steel ball can accurately hit the centroid position of the specimen surface. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this application;
[0026] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;
[0027] Figure 3 This is a side view of the structure of this application;
[0028] Figure 4 for Figure 1 Enlarged structural diagram at point B.
[0029] In the diagram: 1. Base; 2. Workbench; 3. Steel frame; 4. Linear guide rail; 5. Linear bearing slider; 6. Connecting block; 7. Lifting platform; 8. Locking mechanism; 801. Snap ring; 802. Screw; 803. Sleeve; 9. Steel ball; 10. Magnetic block; 11. Magnetic seat; 12. Fixed foot; 13. Bolt; 14. Fine adjustment mechanism; 1401. Fixed seat; 1402. Threaded rod; 1403. Abutment; 15. Scale; 16. Displacement sensor; 17. Controller; 18. Electric push rod; 19. Shock-absorbing pad. Detailed Implementation
[0030] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] Reference Figure 1-4A gypsum board impact testing instrument includes a base 1, a workbench 2 fixedly mounted on the top of the base 1, a steel frame 3 fixedly mounted on one side of the top of the base 1 on the workbench 2, linear guide rails 4 fixedly mounted on both sides of the steel frame 3, linear bearing sliders 5 slidably connected to the sliding ends of the linear guide rails 4, connecting blocks 6 fixedly mounted on one side of each set of linear bearing sliders 5, a lifting platform 7 fixedly mounted on one side of each set of connecting blocks 6, a 701 located on one side of the lifting platform 7 in the middle of the steel frame 3, a magnetic block 10 fixedly mounted on the top of the 701, and the top of the steel frame 3... A magnetic base 11 matching the magnetic block 10 is fixedly installed on the lifting platform 7. The magnetic base 11 is attracted to the magnetic block 10. A locking mechanism 8 is provided at the bottom of the lifting platform 7. A steel ball 9 is installed on the lifting platform 7 through the locking mechanism 8. Two sets of fine adjustment mechanisms 14 are symmetrically arranged at the top of the worktable 2. The locking mechanism 8 includes a retaining ring 801, which is engaged with the bottom of the steel ball 9. The inside of the retaining ring 801 is threaded with screws 802 on both sides of the steel ball 9. Two sets of sleeves 803 are fixedly installed at the bottom of the lifting platform 7. The screws 802 are threaded into the inside of the sleeves 803.
[0032] During the experiment, the specimen was first placed on the base 1, and its position was adjusted by the fine-tuning mechanism 14 so that the centroid of the specimen was directly below the predetermined impact point. At this time, the magnetic base 11 attracted the magnetic block 10, and the lifting platform 7 was located on the top side of the steel frame 3. Then, the magnetic base 11 was closed to cancel the magnetic attraction, thereby separating the magnetic block 10 from the magnetic base 11. The lifting platform 7, together with the steel ball 9, descended synchronously to simulate free fall. The linear bearing slider 5 connected to the lifting platform 7 by the connecting block 6 slid on the sliding end of the linear guide rail 4 to guide the lifting platform 7 to accurately hit the surface of the specimen when it moved down. The centroid position of the surface is determined, which significantly improves the positioning accuracy of the gypsum board impact test, reduces the influence of human factors, and improves the accuracy of hitting the intersection of the two diagonals of the specimen surface in the case of rectangular specimens. This is beneficial to ensure that the steel ball 9 can be accurately dropped to the centroid position of the specimen surface in each test. By rotating the two sets of screws 802 downward to move the retaining ring 801 downward, the steel ball 9 can be locked above the retaining ring 801. Then, by rotating the two sets of screws 802 upward, the retaining ring 801 moves the steel ball 9 upward until the steel ball 9 abuts against the bottom surface of the lifting platform 7, which helps to ensure the stability of the steel ball 9.
[0033] Reference Figure 1-3 The fine-tuning mechanism 14 includes a fixed base 1401, which is fixedly installed on the top of the workbench 2. A threaded rod 1402 is threadedly connected to the middle of the fixed base 1401, and a stop block 1403 is fixedly installed on the opposite surfaces of the two sets of threaded rods 1402. Two sets of scales 15 are fixedly installed on the top of the workbench 2, and the two sets of scales 15 are respectively located below the stop block 1403.
[0034] By rotating the threaded rod 1402 to adjust the position of the stop block 1403, the stop block 1403 pushes the gypsum board specimen on the worktable 2 to fine-tune its position, so that the centroid of the specimen is located directly below the predetermined impact point, which helps to ensure that the steel ball 9 can accurately hit the centroid position of the specimen surface; the scale 15 makes it easy to observe the adjustment data when adjusting the stop block 1403, improving the accuracy of the adjustment.
[0035] Reference Figure 1-3 A displacement sensor 16 is fixedly installed on the top of the workbench 2, and a controller 17 is fixedly installed on one side of the base 1. The displacement sensor 16 and the controller 17 are electrically connected. An electric push rod 18 is fixedly installed inside the base 1. The telescopic end of the electric push rod 18 passes through the top of the base 1 and is located in the middle of the steel frame 3. The telescopic end of the electric push rod 18 moves against the bottom of 701. The displacement sensor 16, model TS-P80, monitors the moving distance and speed of the lifting platform 7 when it falls, and the data is viewed through the controller 17, which improves the accuracy of the test results. The electric push rod 18 pushes 701 to raise the lifting platform 7, which not only allows for flexible control of the experimental height of the lifting platform 7, but also facilitates the attraction of the magnetic block 10 on 701 to the magnetic seat 11, improving its practicality during use.
[0036] Reference Figure 1-3 The base 1 is fixedly installed with four corners of the base 1, and bolts 13 are connected to the internal threads of the fixed feet 12. The bottom of the base 1 is fixedly installed with a shock-absorbing pad 19. The fixed feet 12 and bolts 13 make it easy to fix the base 1 to the mounting surface, thereby improving the stability of the device during operation. The shock-absorbing pad 19 reduces vibration and noise during the test, improving the practicality of use.
[0037] Working principle: During the test, the specimen is first placed on the base 1, and the position of the stop block 1403 is adjusted by rotating the threaded rod 1402. The adjustment data is easily observed by the scale 15 when adjusting the stop block 1403, so that the centroid of the specimen is located directly below the predetermined impact point. At this time, the magnetic suction seat 11 attracts the magnetic block 10 and controls the lifting platform 7 to be located on the top side of the steel frame 3. Then, the magnetic suction seat 11 is closed to cancel the magnetic attraction, so that the magnetic block 10 is separated from the magnetic suction seat 11. The lifting platform 7 and the steel ball 9 descend synchronously to simulate free fall motion. The linear bearing slider 5 connected to the lifting platform 7 by the connecting block 6 slides on the sliding end of the linear guide rail 4 to guide the lifting platform 7 to accurately hit the centroid position of the specimen surface when it moves down, ensuring that the steel ball 9 can accurately hit the centroid position of the specimen surface.
[0038] Specifically, by rotating the two sets of screws 802 downwards to move the retaining ring 801 downwards, the steel ball 9 can be secured above the retaining ring 801. Then, by rotating the two sets of screws 802 upwards, the retaining ring 801 moves the steel ball 9 upwards in conjunction with the steel ball 9 until the steel ball 9 comes into contact with the bottom surface of the lifting platform 7, thus fixing the steel ball 9.
[0039] Meanwhile, the displacement sensor 16, model TS-P80, monitors the moving distance and speed of the lifting platform 7 during its descent, and the data is viewed through the controller 17; the base 1 is easily fixed to the mounting surface by the fixing feet 12 and bolts 13;
[0040] In addition, the electric push rod 18 pushes 701 to raise the lifting platform 7, which not only allows for flexible control of the experimental height of the lifting platform 7, but also facilitates the attraction of the magnetic block 10 on 701 to the magnetic seat 11; the shock-absorbing pad 19 reduces vibration and noise during the test.
[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A gypsum board impact tester, comprising a base (1), characterized in that, A workbench (2) is fixedly installed on the top of the base (1). A steel frame (3) is fixedly installed on one side of the workbench (2) at the top of the base (1). Linear guide rails (4) are fixedly installed on both sides of the steel frame (3). Linear bearing sliders (5) are slidably connected to the sliding ends of the linear guide rails (4). Connecting blocks (6) are fixedly installed on one side of each of the two sets of linear bearing sliders (5). A lifting platform (7) is fixedly installed on one side of each of the two sets of connecting blocks (6). A (701) is provided on one side of the lifting platform (7). The (701) is located in the middle of the steel frame (3). A magnetic block (10) is fixedly installed on the top of the (701). A magnetic seat (11) matching the magnetic block (10) is fixedly installed on the top of the steel frame (3). The magnetic seat (11) is attracted to the magnetic block (10). A locking mechanism (8) is provided at the bottom of the lifting platform (7). A steel ball (9) is installed on the lifting platform (7) through the locking mechanism (8). Two sets of fine adjustment mechanisms (14) are symmetrically arranged at the top of the workbench (2).
2. The gypsum board impact tester according to claim 1, characterized in that, The fine-tuning mechanism (14) includes a fixed seat (1401), which is fixedly installed on the top of the workbench (2). A threaded rod (1402) is threadedly connected to the middle of the fixed seat (1401), and a stop block (1403) is fixedly installed on the opposite surfaces of the two sets of threaded rods (1402).
3. The gypsum board impact tester according to claim 1, characterized in that, The locking mechanism (8) includes a retaining ring (801), which is engaged with the bottom of the steel ball (9). The inside of the retaining ring (801) is threaded with screws (802) on both sides of the steel ball (9). Two sets of sleeves (803) are fixedly installed at the bottom of the lifting platform (7), and the screws (802) are threaded into the inside of the sleeves (803).
4. The gypsum board impact tester according to claim 2, characterized in that, Two sets of scales (15) are fixedly installed on the top of the workbench (2), and the two sets of scales (15) are respectively located below the abutment block (1403).
5. The gypsum board impact tester according to claim 1, characterized in that, A displacement sensor (16) is fixedly installed on the top of the workbench (2), and a controller (17) is fixedly installed on one side of the base (1). The displacement sensor (16) is electrically connected to the controller (17).
6. The gypsum board impact tester according to claim 1, characterized in that, The base (1) is fixedly installed with fixed feet (12) at each of the four corners, and the fixed feet (12) are internally threaded with bolts (13).
7. The gypsum board impact tester according to claim 1, characterized in that, An electric push rod (18) is fixedly installed inside the base (1). The telescopic end of the electric push rod (18) passes through the top of the base (1) and is located in the middle of the steel frame (3). The telescopic end of the electric push rod (18) moves against the bottom end of the (701).
8. The gypsum board impact tester according to claim 1, characterized in that, A shock-absorbing pad (19) is fixedly installed at the bottom of the base (1).