Load-bearing multidirectional stress test structure for prefabricated building board

Abstract

The invention discloses a load-bearing multidirectional stress test structure for a prefabricated building board, which is applied to the technical field of building board testing, and is characterized in that a loading test structure is arranged, and a shear loading mechanism and a vertical loading mechanism are combined through the innovatively designed loading test structure, so that the load-bearing multidirectional stress of the prefabricated building board can be tested; according to the invention, vertical pressure and shearing force can be simultaneously applied to the prefabricated panel, the stress state of the panel in an actual building is comprehensively simulated, the problem that the existing test is not comprehensive is effectively solved, and the test result can more accurately reflect the real load-bearing performance of the panel.

Description

Technical Field

[0001] The present invention belongs to the technical field of building board testing, and in particular relates to a load-bearing multi-directional stress testing structure for prefabricated building boards. Background Art

[0002] In the prefabricated building industry, the load-bearing performance of prefabricated building panels is a key indicator of their quality and safety.

[0003] Currently, stress tests on prefabricated building panels mostly focus on pressure tests in a single direction, such as applying vertical pressure on the top of the panel using a hydraulic press to measure the compressive strength of the panel. However, in actual construction applications, prefabricated building panels are often subjected to stress from multiple directions, including vertical pressure, shear force, etc. The test results in a single direction cannot fully reflect the true performance of the panel under complex stress conditions.

[0004] Combining the above two points, we can find that it is difficult to avoid the above problems at the same time when the existing devices on the market are in use, and even if they can be solved, they cannot achieve the desired effect. Therefore, we propose a multi-directional stress testing structure for prefabricated building panels that can simultaneously perform vertical pressure and shear stress tests on prefabricated building panels during use, which can fully reflect the true performance of the panels under complex stress conditions. Summary of the Invention

[0005] The purpose of the present invention is to propose a multi-directional stress testing structure for the load-bearing of prefabricated building panels. The advantage of the present invention is that the shear loading mechanism and the vertical loading mechanism are combined through an innovatively designed loading test structure, which can simultaneously apply vertical pressure and shear force to the prefabricated panels, comprehensively simulating the stress state of the panels in actual buildings, effectively solving the problem of incomplete existing tests, and the test results can more accurately reflect the actual load-bearing performance of the panels.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a load-bearing multi-directional stress testing structure for prefabricated building panels, comprising a base, a loading frame disposed on the top of the base, a loading test structure bolted to the top of the base, the loading test structure comprising a shear loading mechanism and a vertical loading mechanism, a prefabricated panel disposed within the shear loading mechanism, and pressure sensors disposed at the contact points between the shear loading mechanism and the vertical loading mechanism and the prefabricated panel;

[0007] The shear loading mechanism includes a guide rail, a movable support is slidably provided on the top of the guide rail, and a first fixed frame is movably provided on the top of the movable support, a first angle bracket is bolted to the inside of the first fixed frame, a winding structure is bolted to the top of the guide rail, a steel cable is wrapped around the surface of the winding structure, and the steel cable is connected to the movable support on a side thereof, a torsion assembly is provided at the bottom of the first fixed frame, and the torsion assembly is connected to the movable support on a side thereof.

[0008] By setting up a shear loading mechanism and the stress in the shear direction, the multi-directional stress state of prefabricated building panels in actual construction applications can be fully simulated. Compared with traditional single-direction tests, the test results can better reflect the actual load-bearing performance of the panels, providing more reliable data support for the quality assessment and design optimization of the panels. While applying shear force, the torsion component causes the panels to produce reciprocating horizontal micro-torsion, simulating the state of the panels under actual complex stress environments. Compared with traditional single shear stress tests, the test is more comprehensive and realistic. By setting up a vertical loading mechanism, vertical pressure can be accurately applied to the prefabricated panels, and it also has point, line or surface testing methods to simulate multiple loading modes such as concentrated loads and uniformly distributed loads. Compared with traditional vertical pressure test structures, it can not only achieve stable and precise vertical pressure loading, but also can be flexibly adjusted according to different specifications and test requirements, thereby improving the applicability and accuracy of the test, and providing a reliable testing method for evaluating the vertical load-bearing performance of prefabricated panels.

[0009] The present invention is further configured as follows: the torsion assembly includes a rotating shaft, which is rotatably connected to the top inside the movable support, the front and rear sides of the rotating shaft are rotatably connected to the mounting bracket, and the mounting bracket is bolted to the movable support on the side close to the movable support, the front and rear sides of the rotating shaft surface are both sleeved with cams, and one side of the cam is in contact with a push rod, the surface of the push rod is slidably sleeved with a support block, and the top of the support block is bolted to the first fixed frame, the surface of the push rod is sleeved with a return spring, and the return spring is connected to the push rod and the support block on one side respectively.

[0010] By adopting the above technical solution, a torsion component is set up, and an external driving device such as a motor drives the shaft to rotate, which can drive the two cams to rotate synchronously. During the rotation of the cam, the push rod is pushed, and the push rod slides in the support block and compresses the reset spring; when the cam rotates to a certain position, the push rod is reset under the action of the reset spring, and this is repeated, causing the first fixed frame to produce reciprocating horizontal micro-torsion, thereby driving the prefabricated plate to twist, so that while applying shear force to the prefabricated plate, reciprocating horizontal micro-torsion of the plate can also be achieved, simulating the state of the plate under an actual complex stress environment, further improving the comprehensiveness and accuracy of the test, and helping to more realistically evaluate the performance of the prefabricated plate.

[0011] The present invention is further configured such that the torsion components are oppositely arranged and diagonally arranged at the bottom of the first fixing frame.

[0012] By adopting the above technical solution, the force balance of the prefabricated plate during the torsion process is ensured by setting the two torsion components, avoiding inaccurate plate test results or plate damage due to uneven torsion force, and improving the stability and reliability of the test.

[0013] The present invention is further configured such that: the front side and the rear side of the top of the guide rail are both bolted to a guide frame, and one end of the steel cable passes through the interior of the guide frame and is bolted to the movable support.

[0014] By adopting the above technical solution, the setting of the guide frame ensures that the steel cable will not deviate during the pulling of the movable support, thereby ensuring the stability and accuracy of the movement of the movable support, so that the shear force can be stably and accurately applied to the prefabricated plate, thereby improving the reliability of the shear loading mechanism.

[0015] The present invention is further configured as follows: a fixed support is diagonally bolted to the top of the base, a second fixed frame is bolted to the top of the fixed support, and a second angle frame is movably provided inside the second fixed frame, and the inner wall of the second angle frame is in close contact with the prefabricated plate.

[0016] By adopting the above technical solution, the fixing effect of the prefabricated plate is enhanced by setting the fixed support, the second fixed frame and the second angle frame, ensuring the stable position of the plate during the stress test, avoiding the impact of the test results due to the movement of the plate, and at the same time assisting the shear loading mechanism and the vertical loading mechanism to better apply stress to the plate.

[0017] The present invention is further configured as follows: a pressure plate is movably provided at the top of the first corner bracket and the second corner bracket, the bottom of the pressure plate is in close contact with the prefabricated plate, the top of the first corner bracket and the second corner bracket are bolted to a first hydraulic cylinder, and the bottom of the first hydraulic cylinder is bolted to the pressure plate.

[0018] By adopting the above technical solution, through the setting of the pressure plate and the first hydraulic cylinder, the stress can be evenly applied to the prefabricated plate, avoiding damage to the plate caused by local stress concentration, while ensuring that the plate is evenly stressed during the test, thereby improving the accuracy of the test results.

[0019] The present invention is further configured such that: a rotating frame is bolted to one side between the second angle frame and the second fixed frame, and a damper is rotatably connected between opposite sides of the two rotating frames.

[0020] By adopting the above technical solution, the stability of the structure is increased by setting the damper, preventing the second corner bracket from excessively rotating under stress, causing structural instability or affecting the test results, and ensuring the safety and accuracy of the test process.

[0021] The present invention is further configured as follows: the vertical loading mechanism includes two fixed seats, the interior of the fixed seats is bolted with a tooth plate, and the top of the tooth plate is meshed and connected with a number of adjusting gears, both sides of the adjusting gears are bolted with connecting shafts, the surface of the connecting shaft is rotatably sleeved with a connecting plate, a second hydraulic cylinder is bolted between the bottoms of the two connecting plates, the bottom of the output end surface of the second hydraulic cylinder is sleeved with a pressure contact, and both sides of the pressure contact are rotatably connected with loading beams, the bottoms of the pressure contacts and the loading beams are in close contact with the prefabricated plate, and an adjustment component is rotatably connected between the rear sides of the two loading beams.

[0022] By adopting the above technical solution, a vertical loading mechanism is set up, and an adjusting gear is driven by an external driving device, and the adjusting gear is engaged with the tooth plate to drive the connecting shaft and the connecting plate to move, thereby adjusting the position of the second hydraulic cylinder; and by starting the second hydraulic cylinder, its output end pushes the pressure contact and the loading beam down to contact the prefabricated plate to apply vertical pressure, and by adjusting the setting of the component, the adjustment component can adjust the relative angle between the two loading beams and adjust the position of the loading beam and the pressure contact, so that the vertical loading mechanism has a point, line or surface test mode to simulate various loading modes such as concentrated load and uniformly distributed load.

[0023] The present invention is further configured as follows: the adjustment component includes a bracket, one end of the bracket is located inside the pressure contact and connected to the output end of the second hydraulic cylinder, and the other end is slidably connected to the second hydraulic cylinder, a connecting block is slidably provided inside the bracket, and the connecting block is bolted to the pressure contact, the internal thread of the connecting block is penetrated by a first screw rod, the rear side of the connecting block is bolted to a connecting frame, the rear side of the interior of the connecting block is penetrated by a second screw rod, and the second screw rod is rotatably connected to the connecting frame, both sides of the surface of the second screw rod are threaded with screw blocks, the rear side of the loading beam is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the screw block.

[0024] By adopting the above technical solution and setting an adjustment component, when a linear contact surface test is required, the second screw can be driven to rotate by an external drive device, and the screw block can be moved on the surface of the second screw by cooperating with the thread of the second screw, and the loading beam can be driven to rotate with the connection with the pressure contact as the fulcrum through the connecting rod until the two loading beams are adjusted to a straight line; and when point contact is required, the first screw can be driven to rotate by an external drive device, and the connecting block can be moved up on the surface of the first screw, and the pressure contact and the loading beam can be simultaneously driven to move upward, so that the two are separated from the prefabricated plate, so that the output end of the second hydraulic cylinder can be used to contact the prefabricated plate and perform a concentrated load test on it, so that the vertical loading mechanism has a point, linear or surface test mode to simulate a variety of loading modes such as concentrated load and uniform load. Compared with the traditional vertical pressure test structure, it can not only achieve stable and accurate vertical pressure loading, but also can be flexibly adjusted according to different specifications and test requirements, thereby improving the applicability and accuracy of the test, and providing a reliable test method for evaluating the vertical load-bearing performance of prefabricated plates.

[0025] The present invention is further configured such that the two loading beams are arranged obliquely and are V-shaped as a whole.

[0026] By adopting the above technical solution, the inclined and V-shaped loading beam design can better distribute the vertical pressure evenly on the prefabricated panels, realize the uniform load test of the prefabricated panels, improve the uniformity of pressure application, and make the test results more accurately reflect the vertical load-bearing performance of the panels.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. By setting up a shear loading mechanism and using the stress in the shear direction, it is possible to fully simulate the multi-directional stress state of prefabricated building panels in actual construction applications. Compared with traditional single-direction testing, the test results can better reflect the actual load-bearing performance of the panels, providing more reliable data support for the quality assessment and design optimization of the panels. In addition, while applying shear force, the panels are subjected to reciprocating horizontal micro-torsion, simulating the state of the panels in actual complex stress environments. Compared with traditional single shear stress testing, the test is more comprehensive and realistic.

[0029] 2. By setting up a vertical loading mechanism, vertical pressure can be accurately applied to the prefabricated panels, and it also has point, line or surface testing methods to simulate various loading modes such as concentrated load and uniform load. Compared with the traditional vertical pressure test structure, it can not only achieve stable and accurate vertical pressure loading, but also can be flexibly adjusted according to different specifications and test requirements, thereby improving the applicability and accuracy of the test and providing a reliable testing method for evaluating the vertical load-bearing performance of prefabricated panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the connection between the base and the shear loading mechanism of the present invention;

[0032] Figure 3 It is a schematic diagram of the partial structure of the shear loading mechanism of the present invention;

[0033] Figure 4 This is a schematic diagram of the connection between the torsion assembly, the movable support and the first fixing frame of the present invention;

[0034] Figure 5 This is a schematic diagram of the connection between the second fixing bracket and the second angle bracket of the present invention;

[0035] Figure 6 It is a schematic structural diagram of the vertical loading mechanism of the present invention;

[0036] Figure 7 It is a schematic structural diagram of the adjustment component of the present invention.

[0037] Figure numerals: 1, base; 2, loading frame; 3, loading test structure; 4, shear loading mechanism; 41, guide rail; 42, movable support; 43, first fixed frame; 44, first angle frame; 45, winding structure; 46, torsion assembly; 461, rotating shaft; 462, mounting frame; 463, cam; 464, push rod; 465, support block; 466, reset spring; 5, vertical loading mechanism; 51, fixed seat; 52, tooth plate; 53, adjusting gear; 54, second Hydraulic cylinder; 55. Pressure contact; 56. Loading beam; 57. Adjustment assembly; 571. Bracket; 572. Connecting block; 573. First screw rod; 574. Connecting frame; 575. Second screw rod; 576. Screw block; 577. Connecting rod; 58. Connecting plate; 59. Connecting shaft; 6. Guide frame; 7. Fixed support; 8. Second fixed frame; 9. Second angle frame; 10. Pressure plate; 11. First hydraulic cylinder; 12. Rotating frame; 13. Damper; 14. Prefabricated plate. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Example 1:

[0040] refer to Figure 1-5 A multi-directional stress test structure for load-bearing prefabricated building panels, comprising a base 1, a loading frame 2 disposed on the top of the base 1, a loading test structure 3 bolted to the top of the base 1, the loading test structure 3 comprising a shear loading mechanism 4, a prefabricated panel 14 disposed within the shear loading mechanism 4, and a pressure sensor disposed at the contact portion between the shear loading mechanism 4 and the prefabricated panel 14;

[0041] The shear loading mechanism 4 includes a guide rail 41, a movable support 42 is slidably provided on the top of the guide rail 41, and a first fixed frame 43 is movably provided on the top of the movable support 42, a first angle frame 44 is bolted to the inside of the first fixed frame 43, a winding structure 45 is bolted to the top of the guide rail 41, a steel cable is wrapped around the surface of the winding structure 45, and the steel cable is connected to it on the side close to the movable support 42, a torsion assembly 46 is provided at the bottom of the first fixed frame 43, and the torsion assembly 46 is connected to it on the side close to the movable support 42.

[0042] By setting up the shear loading mechanism 4, the stress in the shear direction can be used to fully simulate the multi-directional stress state of prefabricated building panels in actual building applications. Compared with the traditional single-direction test, the test results can better reflect the actual load-bearing performance of the panels, providing more reliable data support for the quality evaluation and design optimization of the panels. While applying the shear force, the torsion component 46 is used to make the panels produce reciprocating horizontal micro-torsion, simulating the state of the panels in an actual complex stress environment. Compared with the traditional single shear stress test, the test is more comprehensive and realistic.

[0043] like Figure 4 As shown, the torsion assembly 46 includes a rotating shaft 461, which is rotatably connected to the top of the movable support 42. The front and rear sides of the rotating shaft 461 are rotatably connected to the mounting bracket 462, and the mounting bracket 462 is bolted to the movable support 42 on one side. The front and rear sides of the surface of the rotating shaft 461 are sleeved with cams 463, and one side of the cam 463 contacts a push rod 464. The surface of the push rod 464 is slidably sleeved with a support block 465, and the top of the support block 465 is bolted to the first fixed frame 43. The surface of the push rod 464 is sleeved with a return spring 466, and the side of the return spring 466 close to the push rod 464 and the support block 465 is respectively connected to the two. By setting the torsion assembly 46, through an external driving device The motor drives the rotating shaft 461 to rotate, which can drive the two cams 463 to rotate synchronously. During the rotation of the cam 463, the push rod 464 is pushed, and the push rod 464 slides in the support block 465 and compresses the reset spring 466; when the cam 463 rotates to a certain position, the push rod 464 is reset under the action of the reset spring 466, and this is repeated, so that the first fixed frame 43 produces a reciprocating horizontal micro-torsion, which in turn drives the prefabricated plate 14 to twist, so that while applying shear force to the prefabricated plate 14, reciprocating horizontal micro-torsion of the plate can also be achieved, simulating the state of the plate under an actual complex stress environment, further improving the comprehensiveness and accuracy of the test, and helping to more realistically evaluate the performance of the prefabricated plate 14.

[0044] like Figure 2As shown, the torsion components 46 are oppositely arranged and diagonally arranged at the bottom of the first fixed frame 43. The arrangement of the two torsion components 46 ensures that the force balance of the prefabricated plate 14 during the torsion process, avoids inaccurate plate test results or damage to the plate due to uneven torsional force, and improves the stability and reliability of the test.

[0045] like Figure 3 As shown, the front and rear sides of the top of the guide rail 41 are bolted with a guide frame 6, and one end of the steel cable passes through the interior of the guide frame 6 and is bolted to the movable support 42. The setting of the guide frame 6 ensures that the steel cable will not deviate during the process of pulling the movable support 42, thereby ensuring the stability and accuracy of the movement of the movable support 42, so that the shear force can be stably and accurately applied to the prefabricated plate 14, thereby improving the reliability of the shear loading mechanism 4.

[0046] like Figure 2 and Figure 5 As shown, the top of the base 1 is diagonally bolted with a fixed support 7, the top of the fixed support 7 is bolted with a second fixed frame 8, and the second fixed frame 8 is movably provided with a second angle frame 9 inside the second fixed frame 8. The inner wall of the second angle frame 9 is in close contact with the prefabricated plate 14. By setting the fixed support 7, the second fixed frame 8 and the second angle frame 9, the fixing effect of the prefabricated plate 14 is enhanced, ensuring the stability of the plate position during the stress test, avoiding the impact of the plate movement on the test results, and at the same time assisting the shear loading mechanism 4 and the vertical loading mechanism 5 to better apply stress to the plate.

[0047] like Figure 5 As shown, a pressure plate 10 is movably provided at the top of the first angle bracket 44 and the second angle bracket 9, and the bottom of the pressure plate 10 is in close contact with the prefabricated panel 14. The top of the first angle bracket 44 and the second angle bracket 9 are bolted with a first hydraulic cylinder 11, and the bottom of the first hydraulic cylinder 11 is bolted to the pressure plate 10. Through the arrangement of the pressure plate 10 and the first hydraulic cylinder 11, stress can be evenly applied to the prefabricated panel 14, avoiding damage to the panel due to local stress concentration, and at the same time ensuring that the panel is evenly stressed during the test, thereby improving the accuracy of the test results.

[0048] like Figure 5 As shown, a rotating frame 12 is bolted to one side between the second angle frame 9 and the second fixed frame 8, and a damper 13 is rotatably connected between the opposite sides of the two rotating frames 12. The provision of the damper 13 increases the stability of the structure, preventing the second angle frame 9 from excessively rotating under stress, causing structural instability or affecting the test results, thereby ensuring the safety and accuracy of the test process.

[0049] Brief description of the usage process: Place the prefabricated plate 14 at a suitable position in the shear loading mechanism 4. At this time, the inner walls of the first angle bracket 44 and the second angle bracket 9 are in close contact with the prefabricated plate 14. The first hydraulic cylinder 11 on the top of the first angle bracket 44 and the second angle bracket 9 pushes the pressure plate 10 to evenly apply stress to the prefabricated plate 14. Subsequently, the winding structure 45 is started, and the steel cable wrapped around the surface of the winding structure 45 begins to wind up. Under the action of the winding structure 45, the steel cable pulls the movable support 42 to slide on the obliquely arranged guide rail 41, and the first fixed frame 43 movably arranged on the top of the movable support 42 moves accordingly. The first angle bracket 44 bolted inside the first fixed frame 43 applies stress in the shear direction to the prefabricated plate 14. At the same time, an external drive device (such as a motor) drives the rotating shaft 461 to rotate. The rotating shaft 461 is connected to the top of the movable support 42, and the mounting frame 462 connected to the front and rear sides is fixed to the movable support 42. When the rotating shaft 461 rotates, the two cams 463 on the surface rotate synchronously. During the rotation of the cam 463, the push rod 464 is pushed, and the push rod 464 slides in the support block 465 and compresses the return spring 466; when the cam 463 rotates to a certain position, the push rod 464 is reset under the action of the return spring 466, and this is repeated, so that the first fixed frame 43 produces a reciprocating horizontal micro-torsion, thereby driving the prefabricated plate 14 to twist. During the whole process, the pressure sensor monitors the pressure situation of the contact part between the shear loading mechanism 4 and the prefabricated plate 14 in real time and transmits it to the external equipment to analyze the stress situation of the prefabricated plate 14.

[0050] Example 2:

[0051] refer to Figure 6-7 , including a base 1, a loading frame 2 is provided on the top of the base 1, a loading test structure 3 is bolted to the top of the base 1, the loading test structure 3 includes a shear loading mechanism 4 and a vertical loading mechanism 5, a prefabricated plate 14 is provided inside the shear loading mechanism 4, and pressure sensors are provided at the contact parts between the shear loading mechanism 4 and the vertical loading mechanism 5 and the prefabricated plate 14. By setting the vertical loading mechanism 5, vertical pressure can be accurately applied to the prefabricated plate 14, and it also has point, line or surface testing methods to simulate concentrated loads, uniformly distributed loads and other loading modes. Compared with traditional vertical pressure test structures, it can not only achieve stable and precise vertical pressure loading, but also can be flexibly adjusted according to different specifications and test requirements, thereby improving the applicability and accuracy of the test, and providing a reliable testing means for evaluating the vertical load-bearing performance of the prefabricated plate 14.

[0052] like Figure 6As shown, the vertical loading mechanism 5 includes two fixed seats 51, the interior of the fixed seat 51 is bolted with a tooth plate 52, and the top of the tooth plate 52 is meshed with a number of adjusting gears 53, both sides of the adjusting gear 53 are bolted with a connecting shaft 59, the surface of the connecting shaft 59 is rotatably sleeved with a connecting plate 58, a second hydraulic cylinder 54 is bolted between the bottoms of the two connecting plates 58, the bottom of the output end surface of the second hydraulic cylinder 54 is sleeved with a pressure contact 55, and both sides of the pressure contact 55 are rotatably connected to loading beams 56, the bottoms of the pressure contacts 55 and the loading beams 56 are in close contact with the prefabricated plate 14, and the rear sides of the two loading beams 56 are rotatably connected with an adjustment component 57. By setting the vertical The direct loading mechanism 5 drives the adjusting gear 53 through an external driving device, and the adjusting gear 53 engages with the tooth plate 52, driving the connecting shaft 59 and the connecting plate 58 to move, thereby adjusting the position of the second hydraulic cylinder 54; and by starting the second hydraulic cylinder 54, its output end pushes the pressure contact 55 and the loading beam 56 down to contact the prefabricated panel 14 to apply vertical pressure, and by adjusting the setting of the component 57, the adjustment component 57 can adjust the relative angle between the two loading beams 56 and adjust the position of the loading beam 56 and the pressure contact 55, so that the vertical loading mechanism 5 has a test mode such as point, line or surface to simulate various loading modes such as concentrated load and uniformly distributed load.

[0053] like Figure 7As shown, the adjustment assembly 57 includes a bracket 571, one end of the bracket 571 is located inside the pressure contact 55 and connected to the output end of the second hydraulic cylinder 54, and the other end is slidably connected to the second hydraulic cylinder 54. A connecting block 572 is slidably provided inside the bracket 571, and the connecting block 572 is bolted to the pressure contact 55. The internal thread of the connecting block 572 is penetrated by a first screw rod 573, and the rear side of the connecting block 572 is bolted to a connecting frame 574. The rear side of the interior of the connecting block 572 is penetrated by a second screw rod 573. 75, and the second screw rod 575 is rotatably connected to the connecting frame 574, and screw blocks 576 are threadedly sleeved on both sides of the surface of the second screw rod 575, and the rear side of the loading beam 56 is rotatably connected to a connecting rod 577, and the other end of the connecting rod 577 is rotatably connected to the screw block 576. By setting the adjustment component 57, when a linear contact surface test is required, the second screw rod 575 can be driven to rotate by an external driving device, and the screw block 576 can be used to cooperate with the thread of the second screw rod 575 to make the screw block 576 rotate. The surface of the second screw rod 575 moves, and the loading beam 56 is driven by the connecting rod 577 to rotate with the connection with the pressure contact 55 as the fulcrum until the two loading beams 56 are adjusted to a straight line; and when point contact is performed, the first screw rod 573 can be driven to rotate by an external driving device, and the connecting block 572 can be moved up on the surface of the first screw rod 573, and the pressure contact 55 and the loading beam 56 can be driven to move up simultaneously, so that the two are separated from the prefabricated plate 14, so that the output end of the second hydraulic cylinder 54 is used to contact the prefabricated plate 14 and perform a concentrated load test on it, so that the vertical loading mechanism 5 has a point, line or surface test method to simulate a variety of loading modes such as concentrated load and uniform load. Compared with the traditional vertical pressure test structure, it can not only achieve stable and accurate vertical pressure loading, but also can be flexibly adjusted according to different specifications and test requirements, thereby improving the applicability and accuracy of the test, and providing a reliable test method for evaluating the vertical load-bearing performance of the prefabricated plate 14.

[0054] like Figure 6 As shown, the two loading beams 56 are arranged at an angle and are V-shaped as a whole. The design of the inclined and V-shaped loading beams 56 can better evenly distribute the vertical pressure on the prefabricated panel 14, thereby realizing a uniform load test on the prefabricated panel 14, improving the uniformity of pressure application, and making the test results more accurately reflect the vertical load-bearing performance of the panel.

[0055] Brief description of the usage process: First, the adjusting gear 53 is driven by an external driving device, and the adjusting gear 53 is engaged with the toothed plate 52 bolted to the inside of the fixed seat 51, driving the connecting shaft 59 and the connecting plate 58 to move, thereby adjusting the position of the second hydraulic cylinder 54 in the vertical direction; when the uniform load (surface) is measured, the second hydraulic cylinder 54 is started, and its output end pushes the pressure contact 55 and the inclined V-shaped loading beam 56 down until the pressure contact 55 and the bottom of the loading beam 56 are in close contact with the prefabricated plate 14. At this time, the inclined and V-shaped loading beam 56 can evenly distribute the vertical pressure on the prefabricated plate 14, realizing a uniform load test; when conducting a concentrated load (point) test, the first screw rod 573 is driven to rotate by an external driving device, so that the connecting block 572 moves up inside the bracket 571. The connecting block 572 is bolted to the pressure contact 55, synchronously driving The pressure contact 55 and the loading beam 56 move upward to separate them from the prefabricated plate 14, and the second hydraulic cylinder 54 is continued to be started so that the bottom surface of the output end of the second hydraulic cylinder 54 directly contacts the prefabricated plate 14 to apply a concentrated load to it; during the linear load test, the second screw rod 575 is driven to rotate by an external drive device, and the screw block 576 is used to cooperate with the thread of the second screw rod 575 to move the screw block 576 on the surface of the second screw rod 575, and the loading beam 56 is driven to rotate with the connection with the pressure contact 55 as the fulcrum through the connecting rod 577 until the two loading beams 56 are adjusted to a straight line, and then the second hydraulic cylinder 54 is started again to apply a linear load to the prefabricated plate 14 through the pressure contact 55 and the adjusted loading beam 56; during the vertical loading process, the pressure sensor monitors the pressure data of the contact part between the vertical loading mechanism 5 and the prefabricated plate 14 in real time.

[0056] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A load-bearing multi-directional stress testing structure for prefabricated building panels, comprising a base (1), characterized in that: A loading frame (2) is provided on the top of the base (1), a loading test structure (3) is bolted to the top of the base (1), the loading test structure (3) comprises a shear loading mechanism (4) and a vertical loading mechanism (5), a prefabricated plate (14) is provided inside the shear loading mechanism (4), and pressure sensors are provided at the contact portions of the shear loading mechanism (4) and the vertical loading mechanism (5) with the prefabricated plate (14); The shear loading mechanism (4) includes a guide rail (41), a movable support (42) is slidably provided on the top of the guide rail (41), and a first fixed frame (43) is movably provided on the top of the movable support (42), a first angle frame (44) is bolted to the inside of the first fixed frame (43), a winding structure (45) is bolted to the top of the guide rail (41), a steel cable is wound around the surface of the winding structure (45), and the steel cable is connected to the movable support (42) on one side, and a torsion assembly (46) is provided at the bottom of the first fixed frame (43), and the torsion assembly (46) is connected to the movable support (42) on one side.

2. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 1, characterized in that: The torsion assembly (46) includes a rotating shaft (461), which is rotatably connected to the top of the movable support (42), and the front and rear sides of the rotating shaft (461) are rotatably connected to the mounting frame (462), and the mounting frame (462) is bolted to the movable support (42) on the side thereof. The front and rear sides of the surface of the rotating shaft (461) are sleeved with cams (463), and one side of the cam (463) contacts a push rod (464), and the surface of the push rod (464) is slidably sleeved with a support block (465), and the top of the support block (465) is bolted to the first fixed frame (43), and the surface of the push rod (464) is sleeved with a return spring (466), and the return spring (466) is connected to the push rod (464) and the support block (465) on the side thereof.

3. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 1, characterized in that: The torsion components (46) are oppositely arranged and diagonally arranged at the bottom of the first fixing frame (43).

4. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 1, characterized in that: The front and rear sides of the top of the guide rail (41) are both bolted to a guide frame (6), and one end of the steel cable passes through the interior of the guide frame (6) and is bolted to the movable support (42).

5. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 1, characterized in that: The top of the base (1) is diagonally bolted with a fixed support (7), the top of the fixed support (7) is bolted with a second fixed frame (8), and a second angle frame (9) is movably provided inside the second fixed frame (8), and the inner wall of the second angle frame (9) is in close contact with the prefabricated plate (14).

6. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 5, characterized in that: A pressure plate (10) is movably provided at the top of each of the first angle frame (44) and the second angle frame (9), and the bottom of the pressure plate (10) is in close contact with the prefabricated plate (14). A first hydraulic cylinder (11) is bolted to the top of each of the first angle frame (44) and the second angle frame (9), and the bottom of the first hydraulic cylinder (11) is bolted to the pressure plate (10).

7. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 5, characterized in that: A rotating frame (12) is bolted to one side between the second angle frame (9) and the second fixed frame (8), and a damper (13) is rotatably connected between opposite sides of the two rotating frames (12).

8. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 1, characterized in that: The vertical loading mechanism (5) includes two fixed seats (51), the interior of the fixed seats (51) is bolted with a tooth plate (52), and the top of the tooth plate (52) is meshed with a plurality of adjusting gears (53), both sides of the adjusting gear (53) are bolted with a connecting shaft (59), the surface of the connecting shaft (59) is rotatably sleeved with a connecting plate (58), a second hydraulic cylinder (54) is bolted between the bottoms of the two connecting plates (58), the bottom of the output end surface of the second hydraulic cylinder (54) is sleeved with a pressure contact (55), and both sides of the pressure contact (55) are rotatably connected with a loading beam (56), the bottoms of the pressure contact (55) and the loading beam (56) are in close contact with the prefabricated plate (14), and an adjustment component (57) is rotatably connected between the rear sides of the two loading beams (56).

9. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 8, characterized in that: The adjustment assembly (57) includes a bracket (571), one end of the bracket (571) is located inside the pressure contact (55) and connected to the output end of the second hydraulic cylinder (54), and the other end is slidably connected to the second hydraulic cylinder (54). A connecting block (572) is slidably provided inside the bracket (571), and the connecting block (572) is bolted to the pressure contact (55). The internal thread of the connecting block (572) is penetrated by a first screw rod (573). The rear side of the connecting block (572) is bolted to a connecting frame (574), the rear side of the interior of the connecting block (572) is penetrated by a second screw rod (575), and the second screw rod (575) is rotatably connected to the connecting frame (574), both sides of the surface of the second screw rod (575) are threadedly sleeved with screw blocks (576), the rear side of the loading beam (56) is rotatably connected to a connecting rod (577), and the other end of the connecting rod (577) is rotatably connected to the screw block (576).

10. The load-bearing multi-directional stress testing structure for prefabricated building panels according to claim 1, characterized in that: The two loading beams (56) are arranged obliquely and are V-shaped as a whole.

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