A testing machine for measuring static bending strength and elastic modulus of a plate

Abstract

The utility model relates to the technical field of plate testing, and in particular refers to a testing machine for measuring the static bending strength and elastic modulus of a plate, comprising a frame, a pressing assembly and a testing assembly, the pressing assembly comprising a pressing cylinder and a pressing plate, the pressing cylinder being arranged on the top of the frame, the pressing plate being arranged below the pressing cylinder, a tension gauge being arranged on the top of the frame near the pressing plate, the tension gauge being connected to the top surface of the pressing plate, the plate placing assembly comprising a mounting seat, a screw rod, a movable seat and a driving motor, the mounting seat being fixedly mounted on the lower end of the frame, the screw rod being relatively and rotatably arranged in the middle of the mounting seat, the driving motor being arranged on one side of the screw rod, the movable seat being movably sleeved on the screw rod, and when testing the plate, when facing plates of different sizes, there is no need to cut the plate, and the screw rod only needs to be driven by the driving motor to adjust the spacing of the movable seat, and the plate is placed on the movable seat, so that the static bending test of the plate can be performed, thereby providing a better testing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of plate testing, in particular to a testing machine for measuring the static bending strength and elastic modulus of a plate. Background Art

[0002] When a board is subjected to stress, it will bend to a certain degree. This condition is called "static bending." "Static bending strength" refers to the compressive strength a wood-based board can withstand when bent to the point of fracture. This is determined by measuring the ratio of the board's bending moment under maximum load to its flexural modulus. The elastic modulus is determined by the ratio of the stress to the strain generated by the load within the material's elastic limit. After processing, testing the transverse static bending strength of the board often requires applying pressure to the board using a transverse static bending strength testing device.

[0003] The significance of "static bending strength" in testing artificial boards is twofold: (1) to intuitively show the ability of a board to resist bending damage, and (2) the ability of the tongue and groove joint between two floorboards to resist bending damage. For both of the above points, the higher the "static bending strength" index value, the stronger the ability to resist bending damage.

[0004] Current technicians usually cut the plates into small test pieces before testing when conducting static bending strength tests on them due to limitations of existing testing equipment. However, the bending and shear properties of the plates are closely related to the size of the selected test pieces. Therefore, the method of using small-sized test pieces for testing and then using the results to evaluate the performance of large-sized test pieces in the prior art is obviously questionable. The purpose of the present utility model is to address the above defects and to provide a testing machine for measuring the static bending strength and elastic modulus of plates. Utility Model Content

[0005] The purpose of the utility model is achieved in the following way: a testing machine for measuring the static bending strength and elastic modulus of a plate, comprising a frame, a pressing assembly and a testing assembly, the pressing assembly and the testing assembly are both connected to the frame, the pressing assembly comprises a pressing cylinder and a pressing plate, the pressing cylinder is arranged at the top of the frame, the pressing plate is installed below the pressing cylinder and is connected to the pressing cylinder, a tension gauge is provided at the top of the frame near the pressing plate, the tension gauge is connected to the top surface of the pressing plate, a plate placing assembly is provided at the lower end of the frame, the plate placing assembly comprises a mounting seat, a screw, a movable seat and a driving motor, the mounting seat is fixedly mounted at the lower end of the frame, the screw is relatively and rotatably arranged in the middle of the mounting seat, the driving motor is arranged on one side of the screw and is connected to the screw, and the movable seat is movably sleeved on the screw.

[0006] In the above description, a further solution is provided, in which a support plate is provided on the top surface of the movable seat, the bottom surface of the support plate is fixedly connected to the top surface of the movable seat, and a height adjustment block is magnetically installed on the top surface of the movable seat; the support plate is used to provide a placement effect for the plate, and the height adjustment block is used to provide adjustment of the placement height of the plate.

[0007] In the above description, a further solution is provided, in which the test assembly includes a connecting plate and a lower pressing block. The connecting plate is arranged below the lower pressing plate and connected to the lower pressing plate. The lower pressing block is detachably arranged at the bottom of the connecting plate. The bottom of the connecting plate is provided with mounting grooves matching the lower pressing block. A clamping plate is provided in the middle of the frame near the connecting plate, and a fixed cylinder is provided above the clamping plate. The fixed cylinder and the clamping plate are used to fix plates of shorter lengths, and the lower pressing block and the connecting plate are used to connect to the lower pressing assembly and test the plates.

[0008] In the above description, a further solution is provided, in which a mounting plate is provided between the downward-pressing cylinder and the downward-pressing block, the mounting plate being a right-angled structure, the vertical portion of the mounting plate being fixedly connected to the frame, the horizontal portion of the mounting plate being provided with an avoidance portion that matches the push rod of the downward-pressing cylinder, and one side of the downward-pressing cylinder being fixedly connected to the top of the frame through a connecting frame; the mounting plate is used to provide a limiting effect for the push rod of the downward-pressing cylinder.

[0009] In the above description, a further solution is provided, in which the top surface of the connecting plate is provided with an adjusting stud, and both ends of the top surface of the adjusting stud are provided with limiting grooves, which extend toward the direction of the connecting plate, and the top surface of the lower pressure plate is provided with a movable hole matching the adjusting stud, and the middle part of the adjusting stud is provided with a nut matching the adjusting stud, and the top surface of the nut is in contact with the bottom surface of the lower pressure plate; the adjusting stud is used to provide a height adjustment effect of the connecting plate, and the nut is used to provide a fixing effect of the connecting plate

[0010] In the above description, a further solution is provided in which a scale column is provided on one side of the adjusting screw, and a avoidance hole matching the scale column is provided on the top of the lower pressure plate; the scale column is used to display the distance changed during adjustment.

[0011] Compared with the existing technology, the beneficial effect of the present invention is that by providing a plate placement component at the lower end of the frame, when testing the plate, when facing plates of different sizes, there is no need to cut the plate. It is only necessary to drive the screw by the driving motor to adjust the spacing of the movable seat. The plate is placed on the movable seat, and the static bending test of the plate can be performed, providing better testing results. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional structural diagram of a testing machine for measuring static bending strength and elastic modulus of a plate according to the present invention;

[0013] Figure 2This is a schematic diagram of the three-dimensional structure of a testing machine for measuring the static bending strength and elastic modulus of a plate from another perspective of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of a testing machine for measuring the static bending strength and elastic modulus of a plate according to the present invention;

[0015] In the figure: 1-frame, 2-pressing cylinder, 3-pressing plate, 4-tension gauge, 5-mounting base, 6-screw;

[0016] 7- movable seat, 8- driving motor, 9- supporting plate, 10- height adjustment block, 11- connecting plate, 12- pressing block;

[0017] 13-mounting slot, 14-clamping plate, 15-fixed cylinder, 16-mounting plate, 17-vertical part;

[0018] 18-avoidance part, 19-adjustment stud, 20-limiting groove, 21-movable hole, 22-nut, 23-scale column; 24-avoidance hole, 25-connecting frame, 26-horizontal part. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0020] For this example, please refer to Figure 1-3 The specific implementation of a testing machine for measuring the static bending strength and elastic modulus of a plate includes a frame 1, a pressing assembly and a testing assembly. The pressing assembly and the testing assembly are both connected to the frame 1. The pressing assembly includes a pressing cylinder 2 and a pressing plate 3. The pressing cylinder 2 is arranged at the top of the frame 1, and the pressing plate 3 is installed below the pressing cylinder 2 and is connected to the pressing cylinder 2. A tension gauge 4 is provided at the top of the frame 1 near the pressing plate 3. The tension gauge 4 is connected to the top surface of the pressing plate 3. A plate placing assembly is provided at the lower end of the frame 1. The plate placing assembly includes a mounting seat 5, a screw 6, a movable seat 7 and a driving motor. The mounting seat 5 is fixedly mounted on the lower end of the frame 1, and the screw 6 is relatively and rotatably arranged in the middle of the mounting seat 5. The driving motor is arranged on one side of the screw 6 and is connected to the screw 6. The movable seat 7 is movably sleeved on the screw 6.

[0021] The top surface of the movable seat 7 is provided with a support plate 9, the bottom surface of the support plate 9 is fixedly connected to the top surface of the movable seat 7, and the top surface of the movable seat 7 is magnetically installed with a height adjustment block 10. The test assembly includes a connecting plate 11 and a lower pressing block 12. The connecting plate 11 is arranged below the lower pressing plate 3 and connected to the lower pressing plate 3. The lower pressing block 12 is detachably arranged at the bottom of the connecting plate 11. The bottom of the connecting plate 11 is provided with a mounting groove 13 matching the lower pressing block 12. A clamping plate 14 is provided in the middle of the frame 1 near the connecting plate 11, and a fixed cylinder 15 is provided above the clamping plate 14.

[0022] A mounting plate 16 is provided between the downward-pressing cylinder 2 and the downward-pressing block 12. The mounting plate 16 has a right-angled structure. The vertical portion 17 of the mounting plate 16 is fixedly connected to the frame 1. The horizontal portion 26 of the mounting plate 16 is provided with an avoidance portion 18 that matches the push rod of the downward-pressing cylinder 2. One side of the downward-pressing cylinder 2 is fixedly connected to the top of the frame 1 through a connecting frame 25.

[0023] The top surface of the connecting plate 11 is provided with an adjusting stud 19, and both ends of the top surface of the adjusting stud 19 are provided with limiting grooves 20, which extend toward the direction of the connecting plate 11. The top surface of the lower pressure plate 3 is provided with a movable hole 21 that matches the adjusting stud 19, and the middle part of the adjusting stud 19 is provided with a nut 22 that matches the adjusting stud 19. The top surface of the nut 22 is in contact with the bottom surface of the lower pressure plate 3, and a scale column 23 is provided on one side of the adjusting stud 19, and the top of the lower pressure plate 3 is provided with an avoidance hole 24 that matches the scale column 23.

[0024] The working process of the present utility model is as follows: the plate is placed on the support plate 9, the driving motor 8 is started, and the driving motor 8 drives the movable seat 7 to be adjusted through the relatively arranged screw 6 to adapt to the length of the plate, and then the nut 22 is rotated, and the distance between the connecting plate 11 and the lower pressure plate 3 is adjusted through the scale column 23 and the adjusting stud 19 to adapt to the thickness of the plate. After the adjustment is completed, the pressing cylinder 2 is started, and the pressing cylinder 2 drives the lower pressure plate 3 and the connecting plate 11 to press down, and the connecting plate 11 drives the pressing block 12 to press the plate down. When pressing down, the tension gauge 4 is connected to the top surface of the lower pressure plate 3, which can achieve the effect of recording the pressure strength and complete the test of the plate.

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0026] Additionally, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance.

[0027] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A testing machine for measuring static bending strength and elastic modulus of a plate, comprising a frame, a pressing assembly and a testing assembly, wherein the pressing assembly and the testing assembly are both connected to the frame, and characterized in that: The pressing assembly includes a pressing cylinder and a pressing plate, the pressing cylinder is arranged on the top of the frame, the pressing plate is installed under the pressing cylinder and is connected to the pressing cylinder, a tension gauge is provided at the top of the frame near the pressing plate, the tension gauge is connected to the top surface of the pressing plate, a plate placing assembly is provided at the lower end of the frame, the plate placing assembly includes a mounting seat, a screw rod, a movable seat and a driving motor, the mounting seat is fixedly mounted on the lower end of the frame, the screw rod is relatively and rotatably arranged in the middle of the mounting seat, the driving motor is arranged on one side of the screw rod and is connected to the screw rod, and the movable seat is movably sleeved on the screw rod.

2. The testing machine for measuring the static bending strength and elastic modulus of a plate according to claim 1, characterized in that: A support plate is provided on the top surface of the movable seat, the bottom surface of the support plate is fixedly connected to the top surface of the movable seat, and a height adjustment block is magnetically mounted on the top surface of the movable seat.

3. The testing machine for measuring the static bending strength and elastic modulus of a plate according to claim 1, characterized in that: The test assembly includes a connecting plate and a lower pressing block. The connecting plate is arranged below the lower pressing plate and connected to the lower pressing plate. The lower pressing block is detachably arranged at the bottom of the connecting plate. The bottom of the connecting plate is provided with mounting grooves matching the lower pressing block. A clamping plate is provided in the middle of the frame near the connecting plate, and a fixed cylinder is provided above the clamping plate.

4. The testing machine for measuring the static bending strength and elastic modulus of a plate according to claim 3, characterized in that: A mounting plate is provided between the downward pressure cylinder and the downward pressure block. The mounting plate is in a right-angled structure. The vertical portion of the mounting plate is fixedly connected to the frame. The horizontal portion of the mounting plate is provided with an avoidance portion that matches the push rod of the downward pressure cylinder. One side of the push rod of the downward pressure cylinder is fixedly connected to the top of the frame through a connecting frame.

5. The testing machine for measuring the static bending strength and elastic modulus of a plate according to claim 3, characterized in that: An adjusting stud is provided on the top surface of the connecting plate, and limiting grooves are provided at both ends of the top surface of the adjusting stud, which extend toward the connecting plate. A movable hole matching the adjusting stud is provided on the top surface of the lower pressure plate, and a nut matching the adjusting stud is provided in the middle of the adjusting stud, and the top surface of the nut is in contact with the bottom surface of the lower pressure plate.

6. A testing machine for measuring static bending strength and elastic modulus of a plate according to claim 5, characterized in that: A scale column is arranged on one side of the adjusting screw, and a avoidance hole matching the scale column is arranged on the top of the lower pressing plate.

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