Plate bending resistance testing machine

Abstract

The utility model discloses a plate bending resistance testing machine, and relates to the technical field of performance detection equipment. A plate bending resistance testing machine comprises a cabinet body, a supporting frame is fixed to the upper surface of the cabinet body, a hydraulic telescopic rod is installed on the supporting frame, an upper pressing roller is arranged at the lower end of the hydraulic telescopic rod, two symmetrical guide rails are fixed to the upper surface of the cabinet body, sliding blocks are arranged on the guide rails in a sliding mode, and the sliding blocks and the guide rails are fixed through bolts. Two symmetrical lower pressing rollers are arranged on the guide rails, the sliding blocks and the lower pressing rollers are fixed through bolts, roller shafts are fixed to the lower pressing rollers, the lower pressing rollers and the guide rails are arranged in a right-angle mode, and a protection mechanism is arranged between the cabinet body and the supporting frame. The hydraulic telescopic rod drives the upper pressing roller to move to abut against and press down the plate, so that the plate is bent until being broken, the protection mechanism protects the plate during pressing down, splashing of plate chippings is reduced, the influence on workers is reduced, and plate testing is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of performance testing equipment, and in particular to a flexural testing machine for plates. Background Art

[0002] A plate is a flat rectangular building material board of standard size, mainly used in the construction industry, and is used as a component for walls, ceilings or floors. The plate can be arbitrarily cut, bent, and stamped, and is flexible and convenient to use. It has the largest consumption in the national economy and needs to be subjected to a flexural test before use.

[0003] A flexural testing machine for plates mentioned in an existing Chinese patent (authorized announcement number: CN218917026U) includes a testing machine body, a lifting mechanism, a pressure roller, a fixing mechanism, and an adjusting mechanism. A workbench is provided on the testing machine body, and two mutually parallel guide rails are provided on the surface of the workbench. Two fixing seats are slidably connected to each guide rail, and two fixing seats on different guide rails form a set of fixing clamps. The pressure roller includes an upper pressure roller and a lower pressure roller. Both the upper and lower pressure rollers include an installation groove and a roller shaft arranged in the installation groove. The upper pressure roller is fixedly arranged at the lower end of the lifting mechanism, and both ends of the lower pressure roller are fixed by the fixing clamps, and the arrangement direction of the upper and lower pressure rollers is perpendicular to the guide rail. Through the combined action of the guide rail and the fixing clamp in this application, the distance between the lower pressure rollers can be adjusted, so as to realize the detection of different test pieces.

[0004] When the flexural testing machine is in use, it is used for the test of the flexural degree of the plate to verify the flexural strength of the plate. The plate is stressed by the pressure roller until it bends and breaks. When the plate bends and breaks, the debris generated by the bending and breaking is easy to fly everywhere, and the flying debris is easy to cause injury to the nearby staff, and thus it is easy to affect the progress of the plate test. Utility Model Content

[0005] The purpose of this application is to provide a flexural testing machine for plates to solve the problem that debris is easy to fly everywhere in the plate testing laboratory.

[0006] To achieve the above purpose, this application specifically adopts the following technical solutions:

[0007] A flexural testing machine for plates includes a cabinet body. A support frame is fixed on the upper surface of the cabinet body. A hydraulic telescopic rod is installed on the support frame. An upper pressure roller is arranged at the lower end of the hydraulic telescopic rod. Two symmetric guide rails are fixed on the upper surface of the cabinet body. A slider is slidably arranged on the guide rail. The slider is fixed to the guide rail by a bolt. Two symmetric lower pressure rollers are arranged on the guide rail. The slider is fixed to the lower pressure roller by a bolt. A roller shaft is fixed on the lower pressure roller. The lower pressure roller is arranged at a right angle to the guide rail. A protection mechanism is arranged between the cabinet body and the support frame.

[0008] By adopting the above technical solution, the hydraulic telescopic rod drives the upper pressure roller to move, so that the upper pressure roller moves downward to resist and press down the plate, causing the plate to bend until it breaks. During the downward pressing, the protection mechanism protects the plate, reduces the splashing of plate debris everywhere, reduces the impact on the staff, and facilitates the plate test.

[0009] Furthermore, the protection mechanism includes a motor fixed in the cabinet. A limiting groove is opened on the cabinet. The output end of the motor extends into the limiting groove and is fixedly connected with a screw rod. A protection component is arranged between the screw rod and the limiting groove.

[0010] By adopting the above technical solution, the motor drives the screw rod to rotate, so that the protection plate moves on the screw rod, providing power for the lifting of the protection plate.

[0011] Furthermore, the protection component includes a protection plate threadedly connected to the screw rod. The protection plate is U-shaped and adapted to the limiting groove. Two symmetrical limiting rods are fixed in the limiting groove, and the limiting rods are slidably arranged with the protection plate.

[0012] By adopting the above technical solution, the protection plate slides on the limiting rods and moves in the limiting groove to limit the protection plate.

[0013] Furthermore, a plurality of observation windows are fixed on the protection plate, and the observation windows are made of tempered glass.

[0014] By adopting the above technical solution, the process of the plate flexural test is observed through the observation window, which is convenient for observation.

[0015] Furthermore, the protection plate is made of steel plate.

[0016] By adopting the above technical solution, the service life and protection of the protection plate are increased.

[0017] Furthermore, a pressure sensor is arranged between the hydraulic telescopic rod and the upper pressure roller. A support plate is fixed on the side of the cabinet, and a display screen is fixed on the support plate. The display screen is electrically connected to the pressure sensor.

[0018] By adopting the above technical solution, the pressure sensor tests the downward pressure and displays the data through the display screen, which is convenient for the staff to view.

[0019] Furthermore, a scale is arranged on the side of the guide rail, and the scale is fixedly connected to the cabinet.

[0020] By adopting the above technical solution, the distance between the two lower pressure rollers is adjusted through the scale, improving the accuracy of the test and facilitating the test.

[0021] Furthermore, adaptor pads are fixedly arranged on both the upper pressing roller and the roller shaft, and the adaptor pads are rubber pads.

[0022] By adopting the above technical solution, the adaptor pads increase the friction between the roller shaft and the plate, and at the same time, the adaptor pads increase the friction between the upper pressing roller and the plate, improving the stability during the plate test.

[0023] To sum up, the present application has at least the following beneficial effects:

[0024] 1. When performing a flexural test on a plate, start the motor. The motor drives the screw rod to rotate, causing the protective plate to move on the screw rod. At the same time, the protective plate slides on the limiting rod and moves within the limiting groove. When the protective plate rises, it shields the area where the plate test is conducted, reducing the splashing of plate debris in all directions and minimizing the impact on the staff, facilitating the plate test.

[0025] 2. When performing a flexural test on a plate, the hydraulic telescopic rod drives the upper pressing roller to move downward to press the plate. During the downward pressing, the pressure sensor measures the pressing force, and the test data is displayed on the display screen for easy viewing by the staff. The force that the plate can withstand is obtained until the plate breaks, facilitating the staff to test the plate. Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of the testing machine in the present application.

[0027] Figure 2 is an internal structural schematic diagram of the testing machine in the present application.

[0028] Figure 3 is a three-dimensional side structural schematic diagram of the testing machine in the present application.

[0029] Figure 4 is an internal side structural schematic diagram of the testing machine in the present application.

[0030] Description of the Reference Numerals:

[0031] 1, cabinet; 2, support frame; 3, slider; 4, hydraulic telescopic rod; 5, upper pressing roller; 6, lower pressing roller; 7, roller shaft; 8, guide rail; 9, motor; 10, screw rod; 11, limiting rod; 12, limiting groove; 13, protective plate; 14, observation window; 15, pressure sensor; 16, support plate; 17, display screen; 18, scale; 19, adaptor pad. Detailed Embodiments

[0032] The following further elaborates on the present application Figures 1-4 in detail with reference to the accompanying drawings.

[0033] The embodiment of the present application discloses a flexural testing machine for plates.

[0034] Reference Figure 1 and Figure 3 A plate bending tester includes a cabinet 1, a support frame 2 is fixed on the upper surface of the cabinet 1, a hydraulic telescopic rod 4 is installed on the support frame 2, an upper pressure roller 5 is provided at the lower end of the hydraulic telescopic rod 4, two symmetrical guide rails 8 are fixed on the upper surface of the cabinet 1, a slider 3 is slidingly provided on the guide rail 8, the slider 3 and the guide rail 8 are fixed by bolts, two symmetrical lower pressure rollers 6 are provided on the guide rail 8, the slider 3 and the lower pressure roller 6 are fixed by bolts, a roller shaft 7 is fixed on the lower pressure roller 6, the lower pressure roller 6 is arranged at right angles to the guide rail 8, and a protective mechanism is provided between the cabinet 1 and the support frame 2.

[0035] When the plate testing machine is in use, the staff starts the hydraulic telescopic rod 4 according to the size of the plate, adjusts the distance between the upper pressing roller 5 and the lower pressing roller 6, and places the plate to be tested on the roller. The lower pressing roller 6 supports the roller. After placement, the hydraulic telescopic rod 4 drives the upper pressing roller 5 to move, so that the upper pressing roller 5 moves downward, and presses down on the plate, causing the plate to bend until it breaks. When pressing down, the protective mechanism protects the plate to reduce the splashing of plate debris, reduce the impact on the staff, and facilitate plate testing.

[0036] Reference Figure 2 and Figure 4 The protective mechanism includes a motor 9 fixed in a cabinet 1. A limiting groove 12 is provided on the cabinet 1. The output end of the motor 9 extends into the limiting groove 12 and is fixedly connected to a screw 10. A protective component is provided between the screw 10 and the limiting groove 12. The protective component includes a protective plate 13 threadedly connected to the screw 10. The protective plate 13 is U-shaped and fits into the limiting groove 12. Two symmetrical limiting rods 11 are fixed in the limiting groove 12. The limiting rods 11 and the protective plate 13 are slidably arranged. A plurality of observation windows 14 are fixed on the protective plate 13. The observation windows 14 are made of tempered glass. The protective plate 13 is made of steel plate.

[0037] When the plate is subjected to a flexural test, the motor 9 is started, and the motor 9 drives the screw 10 to rotate, so that the protective plate 13 moves on the screw 10. At the same time, the protective plate 13 slides on the limiting rod 11 and moves in the limiting groove 12, and the protective plate 13 rises, restricting the protective plate 13 to block the plate test, reduce the splashing of plate debris, reduce the impact on staff, and facilitate plate testing. When blocking, the process of the plate flexural test can be observed through the observation window 14. After the test is completed, the motor 9 is started again to drive the screw 10 to rotate, so that the protective plate 13 drops to the same level as the cabinet 1, which is convenient for subsequent taking and placing of the plate. The protective plate 13 increases the service life and protection of the steel plate.

[0038] Reference Figure 4, a pressure sensor 15 is provided between the hydraulic telescopic rod 4 and the upper pressing roller 5. A support plate 16 is fixed to the side of the cabinet body 1, and a display screen 17 is fixed to the support plate 16. The display screen 17 is electrically connected to the pressure sensor 15. A scale 18 is provided on the side of the guide rail 8, and the scale 18 is fixedly connected to the cabinet body 1. In addition, matching pads 19 are fixed on both the upper pressing roller 5 and the roller shaft 7, and the pads 19 are rubber pads.

[0039] When performing a flexural test on the plate, the hydraulic telescopic rod 4 drives the upper pressing roller 5 to move down to press the plate. During the pressing, the pressure sensor 15 tests the downward force and displays it through the display screen 17 for the convenience of the staff to view. Until the plate breaks, the force that the plate can withstand is obtained, which is convenient for the staff to test the plate. During the test, the distance between the two lower pressing rollers 6 is adjusted through the scale 18 to improve the accuracy of the test and facilitate the test. During the plate test, the pads 19 increase the friction between the roller and the plate. At the same time, the pads 19 increase the friction between the upper pressing roller 5 and the plate, increasing the stability during the plate test.

[0040] The implementation principle of a plate flexural testing machine in this embodiment is as follows: When using the plate testing machine, the staff adjusts the distance between the two lower pressing rollers 6 through the scale 18 according to the size of the plate during the test. First, unscrew the bolts on the slider 3 to release the fixation of the slider 3, so that the slider 3 moves on the guide rail 8, driving the lower pressing roller 6 to move relatively. Adjust the required test distance according to the scale 18, and then start the hydraulic telescopic rod 4 to adjust the distance between the upper pressing roller 5 and the lower pressing roller 6. Place the plate to be tested on the roller, and the lower pressing roller 6 supports the roller. After placing it, the hydraulic telescopic rod 4 drives the upper pressing roller 5 to move, so that the upper pressing roller 5 moves downward to press against the plate;

[0041] At the same time, the hydraulic telescopic rod 4 drives the upper pressing roller 5 to move down to press the plate. During the pressing, the pressure sensor 15 tests the downward force and displays the data through the display screen 17 for the convenience of the staff to view. Until the plate breaks, the force that the plate can withstand is obtained, which is convenient for the staff to test the plate. During the test, the distance between the two lower pressing rollers 6 is adjusted through the scale 18 to improve the accuracy of the test and facilitate the test. During the plate test, the pads 19 increase the friction between the roller and the plate. At the same time, the pads 19 increase the friction between the upper pressing roller 5 and the plate, increasing the stability during the plate test;

[0042] During shielding, the process of the plate flexural test can be observed through the observation window 14. After the test is completed, start the motor 9 to drive the screw rod 10 to rotate, so that the protective plate 13 descends to be flush with the cabinet body 1, which is convenient for subsequent taking and placing of the plate. The protective plate 13 is made of steel plate to increase the service life and protection of the protective plate 13.

Claims

1. A plate flexural testing machine, comprising a cabinet body (1), characterized in that: A support frame (2) is fixed on the upper surface of the cabinet body (1). A hydraulic telescopic rod (4) is installed on the support frame (2). A upper pressing roller (5) is arranged at the lower end of the hydraulic telescopic rod (4). Two symmetric guide rails (8) are fixed on the upper surface of the cabinet body (1). A slider (3) is slidably arranged on the guide rail (8). The slider (3) is fixed to the guide rail (8) by bolts. Two symmetric lower pressing rollers (6) are arranged on the guide rail (8). The slider (3) is fixed to the lower pressing roller (6) by bolts. A roller shaft (7) is fixed on the lower pressing roller (6). The lower pressing roller (6) is arranged at a right angle to the guide rail (8). A protection mechanism is arranged between the cabinet body (1) and the support frame (2); The protection mechanism includes a motor (9) fixed inside the cabinet body (1). A limiting groove (12) is formed in the cabinet body (1). The output end of the motor (9) extends into the limiting groove (12) and is fixedly connected with a screw rod (10). A protection component is arranged between the screw rod (10) and the limiting groove (12); The protection component includes a protection plate (13) threadedly connected to the screw rod (10). The protection plate (13) is U-shaped and adapted to the limiting groove (12). Two symmetric limiting rods (11) are fixed in the limiting groove (12). The limiting rods (11) are slidably arranged with the protection plate (13); A pressure sensor (15) is arranged between the hydraulic telescopic rod (4) and the upper pressing roller (5). A support plate (16) is fixed on the side surface of the cabinet body (1). A display screen (17) is fixed on the support plate (16). The display screen (17) is electrically connected to the pressure sensor (15); A scale (18) is arranged on the side surface of the guide rail (8). The scale (18) is fixedly connected with the cabinet body (1).

2. The flexural strength testing machine for sheet materials according to claim 1, characterized in that: A plurality of observation windows (14) are fixed on the protection plate (13). The observation windows (14) are made of tempered glass.

3. The plate flexural testing machine according to claim 1, wherein: The protection plate (13) is made of steel plate material.

4. The flexural strength testing machine for sheet materials according to claim 1, characterized in that: Adapted pads (19) are fixed on both the upper pressing roller (5) and the roller shaft (7). The pads (19) are made of rubber pads.

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