Equipment for detecting bending resistance of composite plate body

Abstract

The invention relates to the technical field of detection equipment, in particular to composite plate bending resistance detection equipment which comprises a rack, a plate placing assembly, a limiting assembly, a lifting workbench, a jacking device, a sensing device and a control system. Pressure is given to the plate body through the jacking device, the sensing device comprises a first detection piece and a second detection piece, the first detection piece is arranged on the jacking device and used for obtaining pressure data and pressurization counting data, and the second detection piece is used for obtaining deformation data and pressed counting data; the control system is connected with the sensing device, the jacking device and the telescopic push rod and used for obtaining data sent by the sensing device and controlling the jacking device and the telescopic push rod to work.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, and in particular to a composite plate body anti-bending ability detection device. Background Art

[0002] Driving on icy and snowy roads is unsafe and difficult to control, and various accidents are very likely to occur, especially for large-tonnage giant vehicles. In order to achieve anti-skid effects, some anti-skid chains are installed on the tires of cars, that is, metal chains are hung on the outer circumference of the tires at intervals, and the sides of the tires are connected with metal chains to form a ring shape. This anti-skid chain has a poor anti-skid effect, there are large gaps between the horizontal chains, and the outer circumference of the tire still has a large area in direct contact with the icy and snowy road surface.

[0003] The invention patent with application number CN202010301239.8 discloses a steel plate curvature detection device based on the principle of light refraction, including a workbench, the horizontal fixing device includes: a first arc groove, an arc metal sheet and a second arc groove, a metal ball corresponding to the arc metal sheet is arranged on the upper left end of the arc slide bar, an elastic pad is connected to the upper end of the workbench and the lower side of the steel plate, a reflective layer is arranged on the lower side of the elastic pad, a photoresistor is arranged on the inner side wall of the workbench, and an irradiation device is connected to the lower part of the workbench. The light irradiated on the reflective layer by the irradiation device is partially refracted onto the photoresistor, and the photoresistor is exposed to light, and its circuit is rapidly reduced, and the current in the photoresistor circuit changes, and the curvature of the steel plate is indirectly detected by the change of the current signal. This structure solves the problems of poor detection accuracy and short service life of the existing steel plate curvature detection device.

[0004] The invention patent with application number CN201110162968.0 discloses a jack test device including a jack performance test device and a jack performance test operating table. The jack test device simplifies the detection difficulty of the jack to be tested by fixing the benchmark test jack, and also provides an effective comparison benchmark for the detection of jacks of the same batch and type. At the same time, since the jack test device disclosed in the present invention uses the maximum lifting state of the jack as the initial test state, it effectively ensures the self-locking and pressure-maintaining force performance of the jack to be tested within the maximum lifting upper limit range. Summary of the invention

[0005] In view of the deficiencies existing in the above-mentioned prior art, the purpose of the present invention is to provide a composite plate body bending resistance testing equipment, which performs a bending resistance life test of the plate body and a life test of the lifting device simultaneously by using a lifting device to push the plate body. The two different testing processes are organically combined from separate equipment to the same equipment, and the two tests are completed at the same time, which greatly improves the work efficiency and saves the testing cost.

[0006] To achieve the above object, the present invention provides the following technical solutions: A composite plate bending resistance testing device comprises a frame, a plate placing component arranged on the frame, a limit component for limiting the end of the plate, a lifting workbench, a lifting device, a sensor device and a control system; The frame includes a detection mounting frame disposed in the inner cavity of the frame; The plate placement assembly includes a plate placement frame and a clamping piece, wherein the plate placement frame is arranged on the detection mounting frame, and the plate placement frame extends downward and is provided with at least two groups of connecting rod groups, the bottom of the connecting rod group is connected to the clamping piece, and the clamping piece is adapted to the plate setting; The limit assembly includes an end limit plate and a telescopic push rod, the bottom of the end limit plate is provided with a downwardly protruding stop bar, the stop bar is connected to the end of the plate body and limits the placement position of the plate body, and the top of the end limit plate is connected to the end of the telescopic push rod; The lifting workbench includes a workbench plate, a mounting base, a connecting rod, and a supporting platform. The four corners of the workbench plate are respectively connected to one end of the connecting rod through a movable rod, and the other end of the connecting rod is connected to the mounting base. The workbench plate moves up and down on a vertical plane relative to the mounting base. The supporting platform is arranged on the workbench plate. During the detection work, the supporting platform is connected to the plate body. The mounting base is provided with a lifting device connecting piece under the supporting platform. The bottom of the jacking device is connected to a mounting platform arranged on the mounting base; The sensing device comprises a first detection member and a second detection member, wherein the first detection member is arranged on the lifting device and is used to obtain pressure data and pressurization count data, and the second detection member is used to obtain deformation data and pressure count data; The control system is connected with the sensor device, the lifting device and the telescopic push rod, and is used for obtaining data sent by the sensor device and controlling the operation of the lifting device and the telescopic push rod.

[0007] The central axis of the top support platform coincides with the center of the worktable plate; A clamping bracket is provided on the frame, and the extension line of the central axis of the clamping bracket coincides with the center of the worktable, and the protruding end of the clamping bracket is connected to the clamping device, and the clamping device includes a clamping arm and an adjusting connecting piece, and the adjusting connecting piece is connected to the clamping bracket, and the two clamping arms are symmetrically connected to the left and right ends of the adjusting connecting piece, and the clamping arms clamp the jacking device to a limited position.

[0008] As a preferred embodiment of the technical solution of the present invention, a mounting hole is opened at the center of the workbench, the top support platform is inserted into the mounting hole and fixedly connected to the workbench, and a limiting groove is provided on the top support platform.

[0009] As a preferred embodiment of the technical solution of the present invention, the adjusting connecting piece and the clamping arm are connected by a screw and a nut, a recessed groove running through the left and right sides is provided on the top of the adjusting connecting piece, a scale is provided outside the recessed groove, and an insertion strip is provided on the clamping arm corresponding to the recessed groove, and the insertion strip is inserted into the recessed groove and can slide in the recessed groove.

[0010] As a preferred embodiment of the technical solution of the present invention, end lifting assemblies are provided on both sides of the workbench, and the end lifting assemblies include mounting columns, telescopic cylinders, connecting seats and end supporting members. The mounting columns are installed on the detection mounting frame and are located on the left and right sides of the lifting workbench. The telescopic cylinders are installed on the mounting columns. The connecting seats are connected to the telescopic ends of the telescopic cylinders, and the end supporting members are axially connected to the connecting seats. The telescopic cylinder is connected to the control system and is controlled by the control system.

[0011] As a preferred embodiment of the technical solution of the present invention, a pressure relief support member is further provided between the workbench and the end lifting assembly, the pressure relief support member is arranged on the mounting base, and the workbench is provided with an opening corresponding to the pressure relief support member.

[0012] As a preferred embodiment of the technical solution of the present invention, the connection seat is provided with a limit plug plate protruding on one side of the direction pointed by the end of the plate body, the limit plug plate includes an insertion portion protruding upward, and the detection mounting frame is provided with a side limit plate with a slot corresponding to the insertion portion; The perpendicular midline of the slot coincides with the perpendicular midline of the locking member.

[0013] As a preferred embodiment of the technical solution of the present invention, the connecting support rod is a hollow rod, the outer diameter of the movable rod is less than or equal to the inner diameter of the connecting support rod, the inner cavity of the connecting support rod is recessed with a radial limit groove along the axis, and the surface of the movable rod is protruded with a limit convex strip corresponding to the radial limit groove, and the limit convex strip and the radial limit groove are adaptively connected.

[0014] As a preferred embodiment of the technical solution of the present invention, the frame is also provided with an execution device connection interface, the execution device connection interface is used to connect to the external execution device, the execution device is used to control the operation of the jacking device, and the jacking device is a manual air pump or an electric cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By using the lifting device to punch the plate body, during this process, the bending resistance life test of the plate body and the life test of the lifting device are carried out at the same time. The two different test processes are organically combined from separate equipment to the same equipment, and the two tests are completed at the same time, which greatly improves work efficiency and saves detection costs.

[0016] The control system obtains control results according to the detection data uploaded by the sensor device, and controls the pressurization, pressure maintenance and pressure relief processes of the jacking device, so that it can simulate the limit life test of the plate bending in different usage scenarios and the service life test of the jacking device.

[0017] Through the alignment between various structures, the central axis of the support platform coincides with the center of the worktable, the median perpendicular line of the slot coincides with the median perpendicular line of the positioning piece, and the clamping arm adjusts the position of the clamping and lifting device by adjusting the connecting piece to ensure that during the test, the lifting device applies uniform force to the worktable and the support platform, thereby ensuring the stability of the entire testing equipment and the validity of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the front side of the present invention; Figure 3 It is a schematic diagram of the internal structure on the back of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure at B in the middle; Figure 5 It is a schematic diagram of the structure of the assembly of the end limit plate and the telescopic push rod in the present invention; Figure 6 It is a control block diagram of the present invention.

[0019] In the figure: 0. Plate body; 1. Frame; 2. Lifting device; 3. Control system; 4. Detection and mounting frame; 5. Plate body placement frame; 6. Positioning piece; 7. Connecting rod group; 8. End limit plate; 9. Telescopic push rod; 10. Stop bar; 11. Work table; 12. Mounting base; 13. Connecting support rod; 14. Support platform; 15. Mounting platform; 16. Sensor device; 17. First detection piece; 18. Second detection piece; 19. Movable rod; 20. Clamping bracket; 21. Clamping arm; 22. Adjusting connecting piece; 23. Limiting groove; 24. Recessed groove; 25. Inserting strip; 26. Mounting column; 27. Telescopic cylinder; 28. Connecting seat; 29. ​​End support piece; 30. Pressure relief support piece; 31. Limiting plug plate; 32. Inserting part; 33. Side limit plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or adding the possibility of one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0023] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0024] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present invention belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present invention.

[0025] See attached Figure 1 To Attachment Figure 6 As shown, a composite plate bending resistance detection device includes a frame 1, a plate placement component arranged on the frame 1, a limit component for limiting the end of the plate 0, a lifting workbench, a jacking device 2, a sensor device 16 and a control system 3. In the present application, the frame 1 is also provided with an execution device connection interface, which is used to connect to an external execution device, and the execution device is used to control the operation of the jacking device 2, which is a manual air pump or an electric cylinder.

[0026] Since the plate 0 is a structure used in the anti-skid chain of truck tires, the use scene of this type of truck is generally forest mud. When driving in the forest mud, mud adhesion and collision with rocks will occur. When the truck drives through the road with rocks, The frame 1 includes a detection mounting frame 4 arranged in the inner cavity of the frame 1. The detection mounting frame 4 is arranged in the inner cavity of the frame 1. The bottom of the detection mounting frame 4 is connected to the frame 1, but other parts are not connected to the frame 1 to prevent interference with the detection mounting frame 4 by external execution equipment and clamping devices.

[0027] The board placement assembly includes a board placement frame 5 and a clamping piece 6. The board placement frame 5 is arranged on the detection mounting frame 4. The board placement frame 5 extends downward and is provided with at least two groups of connecting rod groups 7. The bottom of the connecting rod group 7 is connected to the clamping piece 6, and the clamping piece 6 is adapted to the board body 0.

[0028] The limiting assembly includes an end limiting plate 8 and a telescopic push rod 9. A downwardly protruding stop bar 10 is provided at the bottom of the end limiting plate 8. The stop bar 10 is connected to the end of the plate body 0 and limits the placement position of the plate body 0. The top of the end limiting plate 8 is connected to the end of the telescopic push rod 9.

[0029] The lifting workbench includes a workbench plate 11, a mounting base 12, a connecting support rod 13, and a supporting platform 14. The four corners of the workbench plate 11 are respectively connected to one end of the connecting support rod 13 through a movable rod 19, and the other end of the connecting support rod 13 is connected to the mounting base 12. The workbench plate 11 moves up and down on a vertical plane relative to the mounting base 12. The supporting platform 14 is arranged on the workbench plate 11. During the detection work, the supporting platform 14 is connected to the plate body 0. The mounting base 12 is provided with a jacking device 2 connecting piece under the supporting platform 14.

[0030] The bottom of the lifting device 2 is connected to a mounting platform 15 disposed on the mounting base 12 .

[0031] The sensing device 16 includes a first detecting member 17 and a second detecting member 18. The first detecting member 17 is arranged on the lifting device 2 to obtain pressure data and pressurization count data, and the second detecting member 18 is used to obtain deformation data and pressure count data.

[0032] The first detection member 17 is a weighing pressure sensor disposed on the top of the lifting device 2 (i.e., a manual or electric jack). The second detection member 18 is a linear displacement sensor disposed on the detection mounting frame 4 and facing the plate body 0. At the beginning of the test, the weighing pressure sensor and the linear displacement sensor are both set to an initial value of zero, and the internal air pressure value of the lifting device 2 is obtained to confirm whether the internal air pressure is normal. If it is within the normal range, the detection work is started.

[0033] The control system 3 is connected with the sensor device 16 , the lifting device 2 , and the telescopic push rod 9 , and is used to obtain data sent by the sensor device 16 and control the lifting device 2 and the telescopic push rod 9 to work.

[0034] The central axis of the supporting platform 14 coincides with the center of the worktable plate 11 .

[0035] A clamping bracket 20 is provided on the frame 1, and the extension line of the central axis of the clamping bracket 20 coincides with the center of the worktable 11. The protruding end of the clamping bracket 20 is connected to the clamping device, and the clamping device includes a clamping arm 21 and an adjustment connector 22. The adjustment connector 22 is connected to the clamping bracket 20, and two clamping arms 21 are symmetrically connected to the left and right ends of the adjustment connector 22. The clamping arms 21 clamp the jacking device 2 to limit the position. A shock-absorbing pad is provided at the connection between the clamping arm 21 and the jacking device 2, and the shock-absorbing pad is used to eliminate the radial vibration generated by the jacking device 2 during operation.

[0036] A mounting hole is provided at the center of the workbench 11, and the top support platform 14 is inserted into the mounting hole and fixedly connected to the workbench 11. A limit groove 23 is provided on the top support platform 14. The distance between the two clamping members 6 is greater than the maximum diameter of the top support platform 14, and the highest height from the workbench surface to the top support platform 14 is greater than the shortest distance from the lowest point of the clamping member 6 to the connection with the plate body 0. Such a setting can ensure that the clamping member 6 will not collide with the top support platform 14 or the workbench 11 during the lifting process.

[0037] The adjusting connector 22 and the clamping arm 21 are connected by a screw nut. A recessed groove 24 is provided on the top of the adjusting connector 22 and is provided with a scale. The clamping arm 21 is provided with an insertion strip 25 corresponding to the recessed groove 24. The insertion strip 25 is inserted into the recessed groove 24 and can slide in the recessed groove 24. The insertion strip 25 is inserted into the recessed groove 24. Since the specifications of different jacking devices 2 are different, and the composite inspection device in the technical solution can respectively adopt electric and manual jacking devices 2, the specifications of the jacking devices 2 are further increased. The relative positions of the clamping arms 21 on the left and right sides relative to the adjusting connector can be clearly adjusted through the scale, so as to ensure that the adjusting jacking device 2 is located at the central balance position, that is, the central axis coincides with the center of the workbench 11. When in the central balance position, the jacking device 2 pushes the workbench 11 upward to ensure that the workbench 11 and the supporting platform 14 above can balance the force on the plate body 0. Since the screw rods connecting the two clamping arms 21 are tilted in different directions, the forces are unbalanced during the clamping process. The insertion strip 25 ensures that the forces of the two clamping arms 21 are balanced.

[0038] End lifting assemblies are provided on both sides of the workbench 11, and the end lifting assemblies include mounting columns 26, telescopic cylinders 27, connecting seats 28 and end support members 29. The mounting columns 26 are installed on the detection mounting frame 4 and are located on the left and right sides of the lifting workbench. The telescopic cylinder 27 is installed on the mounting columns 26, the connecting seats 28 are connected to the telescopic ends of the telescopic cylinders 27, and the end support members 29 are axially connected to the connecting seats 28.

[0039] The telescopic cylinder 27 is connected to the control system 3 and is controlled by the control system 3 .

[0040] A pressure relief support member 30 is further provided between the workbench 11 and the end jacking assembly. The pressure relief support member 30 is disposed on the mounting base 12 , and an opening is provided on the workbench 11 corresponding to the pressure relief support member 30 .

[0041] The connection seat 28 is provided with a limit plate 31 protruding on one side of the direction pointed by the end of the plate body 0, and the limit plate 31 includes an insertion portion 32 protruding upward, and the detection mounting frame 4 is provided with a side limit plate 33 with a slot 34 corresponding to the insertion portion 32.

[0042] The perpendicular midline of the slot 34 coincides with the perpendicular midline of the locking member 6 .

[0043] The connecting support rod 13 is a hollow rod, and the outer diameter of the movable rod 19 is less than or equal to the inner diameter of the connecting support rod 13. The inner cavity of the connecting support rod 13 is recessed with a radial limit groove 23 along the axis, and the surface of the movable rod 19 is protruded with a limit convex strip corresponding to the radial limit groove 23. The limit convex strip and the radial limit groove 23 are adaptively connected. After the two are mutually engaged, the movable rod 19 will not produce circumferential rotation when moving up and down in the connecting support rod 13, ensuring that the movable rod 19 can only make up and down reciprocating motion in the vertical direction relative to the connecting support rod 13.

[0044] Actual detection and control method: Initialization step, the equipment initializes the equipment, determines that each part is in the initial position, places the plate body 0 on the plate body placement rack 5, limits the plate body 0 by the end limit plate 8, adjusts the plate body 0 to be in the specified position, resets the initial value of the sensor device 16 to zero, and resets the action count of the jacking device to zero.

[0045] In the cyclic detection step, the control system 3 controls the lifting device 2 to cyclically execute the automatic pressurization, automatic pressure maintenance and automatic pressure relief procedures. During this process, the first detection component 17 detects the equipment pressure change of the lifting device 2 in real time, and the second detection component 18 detects the deformation of the plate body 0. After completing a cycle of automatic pressurization, automatic pressure maintenance and automatic pressure relief, the number of the entire test cycle (one test cycle is to execute automatic pressurization, automatic pressure maintenance and automatic pressure relief in sequence) is increased by one and the next cyclic detection step is restarted. At the same time, the count of a single link is increased by one after each link (automatic pressurization step, automatic pressure maintenance and automatic pressure relief, a total of three links) is completed.

[0046] Product life parameters: Board 0: Parameter 1: Pressure resistance cycle times Parameter 2: Maximum elastic deformation / 0.1mm Parameter 3: Maximum plastic deformation / 0.1mm Parameter 4: Maximum pressure / 10kg Lifting device 2: (divided into two types: manual air pump and electric cylinder) air pump: Parameter 1: Cycle pressurization times / times Parameter 2: Single pressurization duration / 0.1sec Parameter 3: Cumulative working time / 0.1sec Parameter 4: Maximum pressurization pressure / 10kg Cylinder: Parameter 1: Cycle pressurization times / times Parameter 2: Single pressurization pressure / 10kg Product life detection logic: Plate chain 0 life: During the automatic pressurization and pressure-maintaining actions, the maximum elastic deformation detected is greater than the set value.

[0047] During the automatic pressure-maintaining action, the pressure is continuously released and the deformation continues to increase, and the pressure cannot be maintained.

[0048] During the automatic pressure relief action, the pressure returns to zero and the plastic deformation is greater than the set value.

[0049] Lifting device 2 life: Air pump life: During the automatic pressurization action, the air pressure normally does not reach the minimum pressure threshold within the set time.

[0050] During the automatic pressurization action, the set pressure value is not reached (abnormal mark), and then the automatic pressure maintenance If it is determined that there is no abnormality in the cylinder, then its service life has expired.

[0051] Cylinder life: During the automatic pressure maintaining action, the continuous pressure relief is greater than the allowable range.

[0052] The electric power source did not reach the set pressure value during automatic pressurization. In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow diagram, and the combination of boxes in the structure diagram and / or the flow diagram, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0053] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0054] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0055] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite plate bending resistance testing device, comprising a frame, characterized in that: It also includes a plate placement component arranged on the frame, a limit component for limiting the end of the plate, a lifting workbench, a jacking device, a sensor device and a control system; The frame includes a detection mounting frame disposed in the inner cavity of the frame; The plate placement assembly includes a plate placement frame and a clamping piece, wherein the plate placement frame is arranged on the detection mounting frame, and the plate placement frame extends downward and is provided with at least two groups of connecting rod groups, the bottom of the connecting rod group is connected to the clamping piece, and the clamping piece is adapted to the plate setting; The limit assembly includes an end limit plate and a telescopic push rod, the bottom of the end limit plate is provided with a downwardly protruding stop bar, the stop bar is connected to the end of the plate body and limits the placement position of the plate body, and the top of the end limit plate is connected to the end of the telescopic push rod; The lifting workbench includes a workbench plate, a mounting base, a connecting rod, and a supporting platform. The four corners of the workbench plate are respectively connected to one end of the connecting rod through a movable rod, and the other end of the connecting rod is connected to the mounting base. The workbench plate moves up and down on a vertical plane relative to the mounting base. The supporting platform is arranged on the workbench plate. During the detection work, the supporting platform is connected to the plate body. The mounting base is provided with a lifting device connecting piece under the supporting platform. The bottom of the jacking device is connected to a mounting platform arranged on the mounting base; The sensing device comprises a first detection member and a second detection member, wherein the first detection member is arranged on the lifting device and is used to obtain pressure data and pressurization count data, and the second detection member is used to obtain deformation data and pressure count data; The control system is connected with the sensor device, the lifting device and the telescopic push rod, and is used for obtaining data sent by the sensor device and controlling the operation of the lifting device and the telescopic push rod.

2. A composite plate bending resistance testing device according to claim 1, characterized in that: The central axis of the top support platform coincides with the center of the worktable plate; A clamping bracket is provided on the frame, and the extension line of the central axis of the clamping bracket coincides with the center of the worktable, and the protruding end of the clamping bracket is connected to the clamping device, and the clamping device includes a clamping arm and an adjusting connecting piece, and the adjusting connecting piece is connected to the clamping bracket, and the two clamping arms are symmetrically connected to the left and right ends of the adjusting connecting piece, and the clamping arms clamp the jacking device to a limited position.

3. A composite plate bending resistance testing device according to claim 2, characterized in that: A mounting hole is provided at the center of the workbench, the top support platform is inserted into the mounting hole and fixedly connected to the workbench, and a limiting groove is provided on the top support platform.

4. The composite plate bending resistance testing device according to claim 2 is characterized in that: The adjusting connecting piece and the clamping arm are connected by a screw and nut. A recessed groove running through the left and right sides is provided on the top of the adjusting connecting piece. A scale is provided outside the recessed groove. An insertion strip is provided on the clamping arm corresponding to the recessed groove. The insertion strip is inserted into the recessed groove and can slide in the recessed groove.

5. The composite plate bending resistance testing device according to claim 2 is characterized in that: The workbench plate is provided with end lifting components on both sides, and the end lifting components include mounting columns, telescopic cylinders, connecting seats and end supporting parts. The mounting columns are installed on the detection mounting frame and are located on the left and right sides of the lifting workbench. The telescopic cylinder is installed on the mounting columns. The connecting seats are connected to the telescopic ends of the telescopic cylinders, and the end supporting parts are axially connected to the connecting seats. The telescopic cylinder is connected to the control system and is controlled by the control system.

6. The composite plate bending resistance testing device according to claim 5, characterized in that: A pressure relief support is also provided between the workbench and the end lifting assembly. The pressure relief support is arranged on the mounting base, and the workbench is provided with an opening corresponding to the pressure relief support.

7. The composite plate bending resistance testing device according to claim 5, characterized in that: The connection seat is provided with a limit plug plate protruding on one side of the direction pointed by the end of the plate body, the limit plug plate covers an insertion portion protruding upward, and the detection mounting frame is provided with a side limit plate with a slot corresponding to the insertion portion; The perpendicular midline of the slot coincides with the perpendicular midline of the locking member.

8. The composite plate bending resistance testing device according to claim 1 is characterized in that: The connecting support rod is a hollow rod, the outer diameter of the movable rod is less than or equal to the inner diameter of the connecting support rod, the inner cavity of the connecting support rod is recessed with a radial limit groove in accordance with the axis, the surface of the movable rod is protruded with a limit convex strip corresponding to the radial limit groove, and the limit convex strip is adaptively connected to the radial limit groove.

9. The composite plate bending resistance testing device according to claim 1, characterized in that: The frame is also provided with an execution device connection interface, which is used to connect to the external execution device, and the execution device is used to control the operation of the jacking device, and the jacking device is a manual air pump or an electric cylinder.

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