Device for detecting bending resistance of fiber reinforced gypsum board

Abstract

The invention relates to a fiber reinforced plasterboard bending resistance detection device which comprises a rack, two supporting arms installed on the rack and used for supporting a fiber plasterboard and a pressure applying mechanism used for applying pressure to the fiber plasterboard, a horizontal sliding rail is connected to the rack, and two sliding blocks are slidably connected to the horizontal sliding rail; a flexible supporting rod is arranged between the two sliding blocks and is parallel to the horizontal sliding rail, and the two ends of the flexible supporting rod are connected with the two sliding blocks respectively. According to the technical scheme, the flexible supporting rod is pressed and bent to drag the two sliding blocks to synchronously slide inwards along the horizontal sliding rail, namely, the two supporting arms are driven to synchronously move inwards so as to adapt to the change of the supporting position after the fiber gypsum board is bent, the sliding displacement between the bent fiber gypsum board and the supporting arms is reduced, and the supporting effect is improved. Therefore, friction vibration caused by relative displacement of the fiber gypsum board and the supporting arm is reduced, and the balance of pressure acting force is improved, so that the accuracy of a detection result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, and in particular to a device for detecting the bending resistance of a fiber reinforced gypsum board. Background Art

[0002] Fiber reinforced gypsum board, commonly known as fiber gypsum board, is a new type of building board with building gypsum powder as the main raw material and various fibers as reinforcing materials.

[0003] Fiber gypsum board is another new product successfully developed after the widespread application of paper-faced gypsum board. Because the surface does not require the protective paperboard, its application range is expanded in addition to the entire application range of paper-faced gypsum board. It is a new type of building board with great development potential.

[0004] The product needs to be tested during the production process. The bending resistance is a unique property of fiber gypsum board compared to ordinary gypsum board. The specific testing method of bending resistance is: place the fiber gypsum board on two support arms with the middle part suspended in the air, and then apply pressure to the center of the fiber gypsum board to bend it until it breaks, so as to obtain the maximum bearing capacity of the fiber gypsum board.

[0005] However, the support arm used to support the fiber gypsum board in the existing testing equipment is in a fixed state. When the middle part of the fiber gypsum board is compressed and bent, its contact point with the support arm will change. Since the support arm is in a fixed state, when the fiber gypsum board slides on the support arm, it will rub against the support arm, and the friction under pressure during the sliding process will cause intermittent vibration, which will cause the imbalance of the test pressure applied on the fiber gypsum board, increase the destructiveness of the test pressure on the fiber gypsum board, and affect the final test data. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a fiber reinforced gypsum board bending resistance testing device to solve the problem that the supporting arm of the prior art is in a fixed state. When the middle part of the fiber gypsum board is compressed and bent and slides on the supporting arm, it will rub against the supporting arm and cause intermittent vibration, resulting in the imbalance of the pressure applied on the fiber gypsum board during the test, thus affecting the final test data.

[0007] The present invention is achieved through the following technical solutions:

[0008] A fiber reinforced gypsum board bending resistance detection device comprises a frame, two support arms mounted on the frame for supporting the fiber gypsum board, and a pressure mechanism for applying pressure to the fiber gypsum board, the frame is connected with a horizontal slide rail, two sliders are slidably connected to the horizontal slide rail, a flexible support rod is arranged between the two sliders, the flexible support rod is arranged parallel to the horizontal slide rail, and the two ends are respectively connected to the two sliders, one end of the two support arms is respectively connected to the two sliders, and the other end is perpendicular to the horizontal slide rail and extends in parallel in the same direction;

[0009] The pressure mechanism includes a first pressure part arranged above the two support arms, a second pressure part arranged above the center of the flexible support rod and a linkage plate, the first pressure part and the second pressure part are arranged in parallel, and the upper ends are fixedly connected to the linkage plate, and a push rod is arranged at the bottom of the linkage plate, and the push rod is vertically slidably connected to the frame;

[0010] The distance between the lower end of the first pressure-applying portion and the line connecting the top surfaces of the two support arms is equal to the distance between the lower end of the second pressure-applying portion and the top surface of the flexible support rod.

[0011] It is further defined that a vertical support rod is provided on the slider, the upper end of the vertical support rod is connected to the slider, and the lower end extends downward, and an oblique support rod is provided between the lower end of the vertical support rod and the end of the support arm away from the slider, one end of the oblique support rod is connected to the lower end of the vertical support rod, and the other end is connected to the end of the support arm away from the slider.

[0012] It is further defined that a horizontal support rail is installed on the frame, and the lower end of the vertical support rod is against the horizontal support rail on the side away from the oblique support rod.

[0013] It is further defined that one end of the support arm is inserted into the slider and is rotationally connected to the slider, and the other end is rotationally connected to an end of the oblique support rod away from the vertical support rod.

[0014] It is further defined that the second pressure portion includes a second pressure rod and a roller rotatably connected to the lower end of the second pressure rod, an annular groove is formed on the wheel surface of the roller, and the upper end of the second pressure rod is connected to the linkage plate.

[0015] It is further defined that the first pressure portion includes a first pressure rod and a transverse pressure rod installed at the lower end of the first pressure rod, the upper end of the first pressure rod is connected to the linkage plate, the center of the transverse pressure rod is connected to the lower end of the first pressure rod, and the transverse pressure rod is arranged parallel to the support arm.

[0016] It is further defined that the transverse pressure rods are provided with two, the two transverse pressure rods are symmetrically arranged on both sides of the first pressure rod, a shrink connection assembly is provided between the two transverse pressure rods, and is connected to the lower end of the first pressure rod through the shrink connection assembly;

[0017] The two transverse pressure bars can be driven to synchronously approach or move away from the first pressure bar by adjusting the contraction connection assembly.

[0018] It is further defined that the shrink connection assembly comprises a first screw rod, a connecting rod and a second screw rod which are coaxially connected in sequence, the connecting rod is rotatably connected to the lower end of the first pressure rod and is arranged in parallel with the transverse pressure rod, the first screw rod and the second screw rod are respectively sleeved with a first movable block and a second movable block through threaded matching, and the thread directions of the first screw rod and the second screw rod are opposite;

[0019] A first support rod and a second support rod are respectively arranged between the front and rear ends of the transverse pressure rod and the first movable block and the second movable block. The two ends of the first support rod are respectively rotatably connected with the first movable block and the front end of the transverse pressure rod through pins, and the two ends of the second support rod are respectively rotatably connected with the second movable block and the rear end of the transverse pressure rod through pins.

[0020] It is further defined that the lower end of the first pressure rod is laterally connected to a third support rod that passes through the middle of the two transverse pressure rods, and the two transverse pressure rods are slidably matched with the third support rod.

[0021] It is further defined that a movable sleeve is slidably sleeved on the first pressure rod, and a fourth support rod is arranged between the movable sleeve and the first movable block and the second movable block, and one end of the fourth support rod is rotatably connected to the movable sleeve, and the other end is rotatably connected to the first movable block or the second movable block.

[0022] The beneficial effects of the present invention are:

[0023] The fiber reinforced gypsum board bending resistance detection device drags two sliders to slide synchronously inward along a horizontal slide rail when a flexible support rod is compressed and bent, that is, drives two support arms to move synchronously inward, so as to adapt to the change of the support position after the fiber gypsum board is bent, reduce the sliding displacement between the fiber gypsum board and the support arm after the fiber gypsum board is bent, and further reduce the friction vibration caused by the relative displacement between the fiber gypsum board and the support arm, so that the fiber gypsum board is in a stable state during the compression process, improve the balance of the pressure force, and thus improve the accuracy of the detection result.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2It is a front view of the present invention;

[0027] Figure 3 for Figure 1 A magnified view of middle;

[0028] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB;

[0029] Figure 5 is a schematic diagram of the matching structure of the second pressure rod and the flexible support rod;

[0030] Figure 6 It is a schematic diagram of the matching structure of the slider and the horizontal slide rail;

[0031] Figure 7 It is a schematic diagram of the matching structure between the contraction connection assembly and the first pressure rod;

[0032] In the figure: 1. frame; 2. support arm; 3. horizontal slide rail; 4. slider; 5. flexible support rod; 6. linkage plate; 7. push rod; 8. vertical support rod; 9. oblique support rod; 10. horizontal support rail; 11. first pressure rod; 12. second pressure rod; 13. roller; 14. transverse pressure rod; 15. first screw rod; 16. connecting rod; 17. second screw rod; 18. first movable block; 19. second movable block; 20. first support rod; 21. second support rod; 22. third support rod; 23. movable sleeve; 24. fourth support rod; 25. pressure roller. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0038] See also Figure 1-7 The present invention provides a technical solution: a fiber reinforced gypsum board bending resistance detection device, comprising a frame 1, two support arms 2 installed on the frame 1 for supporting the fiber gypsum board and a pressure mechanism for applying pressure to the fiber gypsum board, the frame 1 is connected with a horizontal slide rail 3, the horizontal slide rail 3 is slidably connected with two sliders 4, a flexible support rod 5 is arranged between the two sliders 4, the flexible support rod 5 is arranged parallel to the horizontal slide rail 3, and the two ends are respectively connected to the two sliders 4, one end of the two support arms 2 is respectively connected to the two sliders 4, and the other end is perpendicular to the horizontal slide rail 3 and extends in parallel in the same direction;

[0039] The pressure mechanism includes a first pressure portion disposed above the two support arms 2, a second pressure portion disposed above the center of the flexible support rod 5, and a linkage plate 6. The first pressure portion and the second pressure portion are disposed in parallel, and the upper ends are both fixedly connected to the linkage plate 6. A push rod 7 is disposed at the bottom of the linkage plate 6, and the push rod 7 is vertically slidably connected to the frame 1.

[0040] The distance between the lower end of the first pressure-applying portion and the line connecting the top surfaces of the two support arms 2 is equal to the distance between the lower end of the second pressure-applying portion and the top surface of the flexible support rod 5 .

[0041] The frame 1 is used as the overall foundation, and the horizontal slide rail 3 can be fixed on the frame 1 by welding, riveting or clamping. The slider 4 is slidably matched on the horizontal slide rail 3. The slider 4 can slide freely on the horizontal slide rail 3. At the same time, the slider 4 serves as the installation basis of the support arm 2. The support arm 2 can move on the horizontal slide rail 3 through the slider 4. The two sliders 4 are connected by a flexible support rod 5. The flexible support rod 5 can be a slender strip structure made of polyethylene or polypropylene. It can bend when it is compressed and can apply tension to the two sliders 4 during the bending process to move the two sliders 4;

[0042] The first pressure part and the second pressure part constitute a pressure mechanism for applying pressure to the fiber gypsum board and the flexible support rod 5 placed on the support arm 2 respectively. The first pressure part and the second pressure part are both connected to the linkage plate 6 and move synchronously with the linkage plate 6. The linkage plate 6 is vertically slidably matched with the frame 1 through the push rod 7. A reciprocating pushing mechanism such as a hydraulic cylinder, a pneumatic cylinder or an electric push rod 7 can be set as a force structure to push the push rod 7 to move vertically along the frame 1, and then drive the first pressure part and the second pressure part to move synchronously through the linkage plate 6, wherein the distance between the lower end of the first pressure part and the line connecting the top surfaces of the two support arms 2 is equal to the distance between the lower end of the second pressure part and the top surface of the flexible support rod 5, then the first pressure part and the second pressure part will synchronously pressurize the fiber gypsum board and the flexible support rod 5 placed on the support arm 2 during the descending process;

[0043] The specific steps are as follows:

[0044] First, adjust the positions of the two sliders 4 so that the two sliders 4 are symmetrically located on both sides of the pressure mechanism, that is, the two support arms 2 are symmetrically located on both sides of the first pressure portion, and the second pressure portion is located above the middle of the flexible support rod 5;

[0045] Then lay the fiber gypsum board flat on the two support arms 2 so that the middle part of the fiber gypsum board faces the first pressure-applying part;

[0046] Then, the push rod 7 is forced to move downward to drive the first pressure-applying part and the second pressure-applying part to move downward to apply pressure to the fiber gypsum board and the flexible support rod 5 respectively until the fiber gypsum board breaks;

[0047] In the above-mentioned pressure-applying process, the flexible support rod 5 and the fiber gypsum board are pressurized at the same time, and the first pressure-applying part and the second pressure-applying part descend synchronously, then the bending amount of the flexible support rod 5 under pressure is synchronized with the bending amount of the fiber gypsum board under pressure, that is, the flexible support rod 5 bends as the fiber gypsum board bends. When the flexible support rod 5 bends, it will drag the two sliders 4 to slide synchronously inward along the horizontal slide rail 3, that is, drive the two support arms 2 to move inward synchronously, so as to adapt to the change of the support position after the fiber gypsum board is bent, reduce the sliding displacement between the fiber gypsum board and the support arm 2 after the fiber gypsum board is bent, and then reduce the friction vibration caused by the relative displacement between the fiber gypsum board and the support arm 2, so that the fiber gypsum board is in a stable state during the pressure process, and the balance of the pressure force is improved to improve the accuracy of the detection result.

[0048] In this embodiment, a vertical support rod 8 is provided on the slider 4, the upper end of the vertical support rod 8 is connected to the slider 4, and the lower end extends downward, and an oblique support rod 9 is provided between the lower end of the vertical support rod 8 and the end of the support arm 2 away from the slider 4, one end of the oblique support rod 9 is connected to the lower end of the vertical support rod 8, and the other end is connected to the end of the support arm 2 away from the slider 4.

[0049] The vertical support rod 8 serves as a vertical support at one end of the support arm 2, and the oblique support rod 9 serves as an oblique support at the other end of the support arm 2, supporting both ends of the support arm 2, improving the bearing capacity of the support arm 2, and improving the stability of the overall structure.

[0050] In this embodiment, a horizontal support rail 10 is installed on the frame 1 , and the lower end of the vertical support rod 8 is against the horizontal support rail 10 on the side away from the oblique support rod 9 .

[0051] The horizontal support rail 10 serves as a supporting structure for the lower end of the vertical support rod 8, that is, as a supporting structure for the end of the support arm 2 away from the slider 4, further improving the bearing capacity of the support arm 2 and the stability of the overall structure.

[0052] In this embodiment, one end of the support arm 2 is inserted into the slider 4 and is rotatably connected to the slider 4 , and the other end is rotatably connected to an end of the oblique support rod 9 away from the vertical support rod 8 .

[0053] The two ends of the support arm 2 are rotatably connected to the slider 4 and the oblique support rod 9 respectively, that is, the support arm 2 can rotate freely. When the deformation of the fiber gypsum board deviates from the deformation of the flexible support rod 5, the connection between the fiber gypsum board and the support arm 2 will change. The support arm 2 rotates to adapt to the position change, so as to reduce the friction vibration when the position changes.

[0054] In this embodiment, the second pressure applying portion includes a second pressure rod 12 and a roller 13 rotatably connected to the lower end of the second pressure rod 12 , an annular groove is formed on the wheel surface of the roller 13 , and the upper end of the second pressure rod 12 is connected to the linkage plate 6 .

[0055] The second pressure rod 12 contacts the flexible support rod 5 through the roller 13. During the process of applying pressure to the flexible support rod 5, the flexible support rod 5 is deformed and the end of the second pressure rod 12 is displaced, which is adapted to the rotation of the roller 13 to reduce damage to the flexible support rod 5. At the same time, the annular groove on the wheel surface is used to fix the flexible support rod 5 to improve the combined stability of the two under pressure.

[0056] In this embodiment, the first pressure part includes a first pressure rod 11 and a transverse pressure rod 14 installed at the lower end of the first pressure rod 11, the upper end of the first pressure rod 11 is connected to the linkage plate 6, the center of the transverse pressure rod 14 is connected to the lower end of the first pressure rod 11, and the transverse pressure rod 14 is arranged parallel to the support arm 2.

[0057] The first pressure rod 11 may be a telescopic structure with a locking function, which is used to adaptively adjust the length according to the thickness of the fiber gypsum board. The transverse pressure rod 14 is used to increase the contact area with the fiber gypsum board and reduce damage to the fiber gypsum board during the pressure application process.

[0058] In this embodiment, two transverse pressure rods 14 are provided, and the two transverse pressure rods 14 are symmetrically arranged on both sides of the first pressure rod 11. A shrink connection component is provided between the two transverse pressure rods 14, and is connected to the lower end of the first pressure rod 11 through the shrink connection component;

[0059] The two transverse pressure rods 14 can be driven to synchronously approach or move away from the first pressure rod 11 by adjusting the contraction connection assembly.

[0060] Two transverse pressure rods 14 are provided and connected by a shrink connection assembly, and the pressure range on the fiber gypsum board can be adjusted according to the specific detection method;

[0061] Among them, a plurality of pressure rollers 25 are rotatably sleeved on the transverse pressure rod 14 as the contact part with the fiber gypsum board. When the fiber gypsum board is compressed and bent and the transverse pressure rod 14 changes position, the pressure rollers 25 roll to reduce damage to the fiber gypsum board.

[0062] In this embodiment, the shrink connection assembly includes a first screw rod 15, a connecting rod 16 and a second screw rod 17 which are coaxially connected in sequence. The connecting rod 16 is rotatably connected to the lower end of the first pressure rod 11 and is arranged parallel to the transverse pressure rod 14. The first screw rod 15 and the second screw rod 17 are respectively sleeved with a first movable block 18 and a second movable block 19 through threaded matching. The thread directions of the first screw rod 15 and the second screw rod 17 are opposite.

[0063] A first support rod 20 and a second support rod 21 are respectively arranged between the front and rear ends of the transverse pressure rod 14 and the first movable block 18 and the second movable block 19. The two ends of the first support rod 20 are respectively rotatably connected with the first movable block 18 and the front end of the transverse pressure rod 14 through pins, and the two ends of the second support rod 21 are respectively rotatably connected with the second movable block 19 and the rear end of the transverse pressure rod 14 through pins.

[0064] The connecting rod 16 is rotatably connected to the lower end of the first pressure rod 11, and the first screw rod 15 and the second screw rod 17 respectively extend to the structures at both ends as the connecting rod 16, and the thread directions of the first screw rod 15 and the second screw rod 17 are opposite, and are respectively connected with the first movable block 18 and the second movable block 19 through threaded cooperation. The first movable block 18 and the second movable block 19 are respectively rotatably connected to the front and rear ends of the two lateral pressure rods 14 through the first support rod 20 and the second support rod 21. By rotating the first screw 15, the second screw 17 can be driven to rotate. When the two rotate, the first slider 4 and the second slider 4 are pushed to move through the thread, and then the two lateral pressure rods 14 are pushed to expand outward away or shrink inward together through the first support rod 20 and the second support rod 21.

[0065] In this embodiment, the lower end of the first pressure rod 11 is laterally connected to a third support rod 22 that passes through the middle of the two transverse pressure rods 14 , and the two transverse pressure rods 14 are slidably matched with the third support rod 22 .

[0066] The third support rod 22 is slidably matched with the two transverse pressure rods 14 , serving as a vertical force-applying structure of the two transverse pressure rods 14 , and also serving as a sliding track limiting structure of the two transverse pressure rods 14 .

[0067] In this embodiment, a movable sleeve 23 is slidably sleeved on the first pressure rod 11, and a fourth support rod 24 is provided between the movable sleeve 23 and the first movable block 18 and the second movable block 19. One end of the fourth support rod 24 is rotatably connected to the movable sleeve 23, and the other end is rotatably connected to the first movable block 18 or the second movable block 19.

[0068] The movable sleeve 23 supports the first movable block 18 and the second movable block 19 respectively through the two fourth support rods 24 , that is, supports the front and rear ends of the two transverse pressure rods 14 , thereby improving the balance of the applied force.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A fiber reinforced gypsum board bending resistance testing device, comprising a frame, two support arms mounted on the frame for supporting the fiber gypsum board, and a pressure mechanism for applying pressure to the fiber gypsum board, characterized in that: The frame is connected to a horizontal slide rail, and two sliders are slidably connected to the horizontal slide rail. A flexible support rod is arranged between the two sliders. The flexible support rod is arranged in parallel with the horizontal slide rail, and the two ends are respectively connected to the two sliders. One end of the two support arms is respectively connected to the two sliders, and the other end is perpendicular to the horizontal slide rail and extends in parallel in the same direction; The pressure mechanism includes a first pressure part arranged above the two support arms, a second pressure part arranged above the center of the flexible support rod and a linkage plate, the first pressure part and the second pressure part are arranged in parallel, and the upper ends are fixedly connected to the linkage plate, and a push rod is arranged at the bottom of the linkage plate, and the push rod is vertically slidably connected to the frame; The distance between the lower end of the first pressure-applying portion and the line connecting the top surfaces of the two support arms is equal to the distance between the lower end of the second pressure-applying portion and the top surface of the flexible support rod.

2. The fiber reinforced gypsum board bending resistance detection device according to claim 1, characterized in that: A vertical support rod is arranged on the slider, the upper end of the vertical support rod is connected to the slider, and the lower end extends downward, an oblique support rod is arranged between the lower end of the vertical support rod and the end of the support arm away from the slider, one end of the oblique support rod is connected to the lower end of the vertical support rod, and the other end is connected to the end of the support arm away from the slider.

3. The fiber reinforced gypsum board bending resistance detection device according to claim 2, characterized in that: A horizontal support rail is installed on the frame, and the lower end of the vertical support rod is against the horizontal support rail on the side away from the oblique support rod.

4. The fiber reinforced gypsum board bending resistance detection device according to claim 2, characterized in that: One end of the support arm is inserted into the slider and is rotatably connected to the slider, and the other end is rotatably connected to an end of the oblique support rod away from the vertical support rod.

5. The fiber reinforced gypsum board bending resistance detection device according to claim 1, characterized in that: The second pressure applying part comprises a second pressure rod and a roller rotatably connected to the lower end of the second pressure rod, an annular groove is formed on the wheel surface of the roller, and the upper end of the second pressure rod is connected to the linkage plate.

6. The fiber reinforced gypsum board bending resistance detection device according to claim 1, characterized in that: The first pressure part includes a first pressure rod and a transverse pressure rod installed at the lower end of the first pressure rod, the upper end of the first pressure rod is connected to the linkage plate, the center of the transverse pressure rod is connected to the lower end of the first pressure rod, and the transverse pressure rod is arranged parallel to the support arm.

7. The fiber reinforced gypsum board bending resistance detection device according to claim 6, characterized in that: There are two transverse pressure rods, which are symmetrically arranged on both sides of the first pressure rod, and a shrink connection component is arranged between the two transverse pressure rods, and is connected to the lower end of the first pressure rod through the shrink connection component; The two transverse pressure bars can be driven to synchronously approach or move away from the first pressure bar by adjusting the contraction connection assembly.

8. The fiber reinforced gypsum board bending resistance detection device according to claim 1, characterized in that: The shrink connection assembly comprises a first screw rod, a connecting rod and a second screw rod which are coaxially connected in sequence, the connecting rod is rotatably connected to the lower end of the first pressure rod and is arranged in parallel with the transverse pressure rod, the first screw rod and the second screw rod are respectively sleeved with a first movable block and a second movable block through threaded matching, and the thread directions of the first screw rod and the second screw rod are opposite; A first support rod and a second support rod are respectively arranged between the front and rear ends of the transverse pressure rod and the first movable block and the second movable block. The two ends of the first support rod are respectively rotatably connected with the first movable block and the front end of the transverse pressure rod through pins, and the two ends of the second support rod are respectively rotatably connected with the second movable block and the rear end of the transverse pressure rod through pins.

9. The fiber reinforced gypsum board bending resistance detection device according to claim 8, characterized in that: The lower end of the first pressure rod is laterally connected to a third support rod that runs through the middle of the two transverse pressure rods, and the two transverse pressure rods are slidably matched with the third support rod.

10. The fiber reinforced gypsum board bending resistance detection device according to claim 8, characterized in that: A movable sleeve is slidably sleeved on the first pressure rod, and a fourth support rod is arranged between the movable sleeve and the first movable block and the second movable block. One end of the fourth support rod is rotatably connected to the movable sleeve, and the other end is rotatably connected to the first movable block or the second movable block.

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