A prefabricated building component strength detection structure

Abstract

The utility model relates to building engineering quality detection technical field discloses a kind of strength detection structure of fabricated building component, including detection table, the upper surface of detection table is provided with detection piece, the upper surface of detection table is symmetrically provided with two extension to the sliding slot of left and right two side surfaces, the inside of two The sliding slot is commonly provided with bearing mechanism;The lower surface of detection table is provided with the interval pushing mechanism that drives bearing mechanism intermittent movement;The utility model is hooked to fixed strip by push plate two when push plate one and push plate two are moved to left by telescopic cylinder three drive and push plate two is blocked automatic overturning and obstacle, and under the action of spring and limiting rod, reset to vertical state;When retracting, push plate two hook fixed strip drive bearing table accurate right shift one station, make the sample to be measured between adjacent baffle automatic positioning to the just below detection plate, so that operator can carry out pressure detection while current sample, the sample that has been detected is disassembled and replaced, and equipment waiting time is eliminated.

Description

Technical Field

[0001] This utility model relates to the field of building engineering quality testing technology, specifically a strength testing structure for prefabricated building components. Background Technology

[0002] Prefabricated construction, as an advanced building production method, has been widely promoted and applied globally due to its advantages such as high construction efficiency, good project quality, minimal environmental impact, and low labor dependence. The core characteristic of this type of construction is that some or all of the building components are prefabricated in a factory, then transported to the construction site and assembled using reliable connection methods. These prefabricated components mainly include prefabricated shear walls, prefabricated floor slabs, prefabricated beams, prefabricated columns, and prefabricated stairs.

[0003] The concrete strength of structural members is a key indicator for measuring their mechanical properties and ensuring the safety of the overall structure. Therefore, strength testing must be performed on the members before they leave the factory, after they arrive on site, and at critical stages of structural formation.

[0004] In current testing equipment, components are prone to displacement during the testing process. For example, when conducting compressive strength testing, if the component cannot be stably placed on the pressure platform of the testing equipment, it will lead to uneven stress distribution. The component may experience local sliding or tilting during the compression process, causing the actual measured pressure distribution to be inconsistent with the theoretical expectation. This will result in inaccurate measured compressive strength data, which cannot truly reflect the actual compressive strength of the component.

[0005] Chinese patent discloses a strength testing structure for prefabricated building components (authorization announcement number CN222784421U). This patented technology allows rotating a threaded screw to push the clamping plate horizontally. The clamping plates on both sides can flexibly adjust their positions according to the size of the prefabricated building components, firmly fixing the components in place. During operations such as compressive strength testing, it can effectively prevent the components from shifting due to insecure fixing, ensuring that the components are stably placed in the testing area and that the stress points are evenly distributed. This ensures that the measured compressive strength and other data can accurately reflect the actual capacity of the components. Compared with traditional testing methods that lack effective fixing means, this greatly improves the testing accuracy.

[0006] However, it has certain drawbacks: after the strength test of a single component is completed, the tested component must be manually disassembled by the operator before the next component to be tested can be loaded to the testing station. This serial operation mode results in a large amount of idle waiting time for the testing equipment, and the manual disassembly operation further prolongs the testing cycle. It is difficult to meet the needs of modern production lines for efficient and continuous testing, and seriously restricts the batch quality inspection efficiency of prefabricated building components. Utility Model Content

[0007] The purpose of this utility model is to provide a strength testing structure for prefabricated building components to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A strength testing structure for prefabricated building components includes a testing platform. The upper surface of the testing platform is provided with a testing component. The upper surface of the testing platform has two symmetrically opened grooves extending to the left and right sides. The two grooves are provided with a bearing mechanism inside.

[0010] The bearing mechanism includes a bearing platform, on the upper surface of which multiple partitions are uniformly fixed from left to right, and on the lower surface of which two slide bars are symmetrically fixed. On the lower surface of which multiple fixing bars are uniformly fixed from left to right between the two slide bars.

[0011] The lower surface of the testing platform is provided with an intermittent pushing mechanism that drives the supporting mechanism to move intermittently.

[0012] As a further embodiment of this utility model: the indirect pushing mechanism includes a fixed block, a telescopic cylinder three is fixedly connected to the right side surface of the fixed block, a fixed rod is fixedly connected to the telescopic end of the telescopic cylinder three, a push plate one is fixedly connected to the left end of the fixed rod, hinge plates are fixedly connected to the upper ends of both the front and rear surfaces of the push plate one, a push plate two is rotatably connected between the two hinge plates above the push plate one, a limit member is provided on the right side surface of the push plate one, and a U-shaped baffle is fixedly connected to the left side surface of the push plate one.

[0013] As a further embodiment of this utility model: the limiting member includes an L-shaped plate, a limiting tube is fixedly connected to the upper end of the left side surface of the L-shaped plate, a spring is fixedly connected to the inner right side surface of the limiting tube, and a limiting rod is fixedly connected to the left end of the spring.

[0014] As a further embodiment of this utility model: the fixing block is fixed to the left edge of the lower surface of the detection table, the lower end of the L-shaped plate is fixed to the right surface of the first push plate, the limiting rod slides inside the limiting tube, and the left end of the limiting rod is attached to the right surface of the second push plate, and the upper end of the U-shaped baffle is attached to the left surface of the second push plate.

[0015] As a further improvement of this utility model: the slider slides inside the groove, and the lower surface of the fixing strip is higher than the upper surface of the detection table.

[0016] As a further embodiment of this utility model: the testing component includes a U-shaped seat, the U-shaped seat is fixed to the upper surface of the testing table, a telescopic cylinder is fixed to the upper surface of the U-shaped seat, a testing plate is fixed to the telescopic end of the telescopic cylinder, the testing plate is located inside the U-shaped seat, support rods are fixed to both the front and rear sides of the upper surface of the testing plate, the support rods movably pass through the U-shaped seat, a second telescopic cylinder is fixed to both the front and rear surfaces of the U-shaped seat, a support plate is fixed to the telescopic end of the second telescopic cylinder, and the support plate is located inside the U-shaped seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention utilizes a telescopic cylinder to drive push plates one and two to move to the left. When push plate two is blocked by a fixing bar, it automatically flips over to overcome the obstacle and returns to a vertical position under the action of a spring and a limit rod. When retracted, push plate two hooks the fixing bar, causing the support platform to move precisely one position to the right. This allows the sample to be tested between adjacent partitions to be automatically positioned directly below the testing plate, thus separating the testing position from the disassembly position. This enables operators to disassemble and replace samples that have already been tested while the current sample is being pressure tested, eliminating equipment waiting time and significantly improving the efficiency of continuous testing of batch samples. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a strength testing structure for prefabricated building components;

[0020] Figure 2 This is a schematic diagram from below of a strength testing structure for prefabricated building components;

[0021] Figure 3 This is a schematic diagram of the testing component in a strength testing structure for prefabricated building components.

[0022] Figure 4 This is a schematic diagram of a sliding groove in a strength testing structure for prefabricated building components.

[0023] Figure 5 This is a schematic diagram of the load-bearing mechanism in a strength testing structure for prefabricated building components.

[0024] Figure 6 A schematic diagram of the intermediate pushing mechanism of a strength testing structure for prefabricated building components;

[0025] Figure 7 This is a schematic diagram of a limiting component in a strength testing structure for prefabricated building components.

[0026] In the diagram: 1. Testing table; 2. Testing component; 3. U-shaped seat; 4. Telescopic cylinder one; 5. Testing plate; 6. Support rod; 7. Telescopic cylinder two; 8. Support plate; 9. Slide groove; 10. Bearing mechanism; 11. Bearing platform; 12. Partition plate; 13. Sliding strip; 14. Fixing strip; 15. Push mechanism; 16. Fixing block; 17. Telescopic cylinder three; 18. Fixing rod; 19. Push plate one; 20. Hinge plate; 21. Push plate two; 22. Limiting component; 23. L-shaped plate; 24. Limiting tube; 25. Spring; 26. Limiting rod; 27. U-shaped baffle. Detailed Implementation

[0027] Please see Figure 1 and Figure 3 In this embodiment of the utility model, a strength testing structure for prefabricated building components includes a testing platform 1; a base is fixedly connected to the lower surface of the testing platform 1, and the base is used to support the testing platform 1 and all structures on it.

[0028] The upper surface of the testing table 1 is provided with a testing component 2, which includes a U-shaped seat 3. The U-shaped seat 3 is fixed to the upper surface of the testing table 1. A telescopic cylinder 4 is fixed to the upper surface of the U-shaped seat 3. A testing plate 5 is fixed to the telescopic end of the telescopic cylinder 4. The testing plate 5 is located inside the U-shaped seat 3. The telescopic cylinder 4 is preferably a hydraulic cylinder, which is used to drive the testing plate 5 to descend and perform strength testing on the prefabricated building components on the testing table 1.

[0029] The upper surface of the test plate 5 is fixed with support rods 6 on both the front and rear sides of the telescopic cylinder 4. The support rods 6 move through the U-shaped seat 3. The support rods 6 provide guidance for the up and down movement of the test plate 5 and prevent it from rotating, ensuring that the pressure applied by the telescopic cylinder 4 is strictly vertical downward, avoiding the influence of off-center load on the test accuracy, and also protecting the piston rod of the telescopic cylinder 4 from lateral force.

[0030] Telescopic cylinder 2 7 is fixedly connected to both the front and rear surfaces of the U-shaped seat 3. The telescopic end of the telescopic cylinder 2 7 is fixedly connected to the support plate 8, which is located inside the U-shaped seat 3. The telescopic cylinder 2 7 is preferably a cylinder, which is used to drive the support plate 8 to clamp and fix the prefabricated building component sample, ensuring that the center of the sample coincides with the center of the test plate 5, and preventing the sample from accidentally slipping or jumping out during the test.

[0031] An elastic pad is fixed to the side of the support plate 8 facing the sample. The elastic pad is preferably made of rubber, which provides sufficient friction while avoiding hard impact damage to the sample surface caused by the clamping force.

[0032] exist Figures 1-5In the middle: The upper surface of the testing stage 1 has two symmetrically opened grooves 9 extending to the left and right sides. The two grooves 9 are jointly provided with a bearing mechanism 10. The bearing mechanism 10 includes a bearing platform 11. Multiple partitions 12 are uniformly fixed to the upper surface of the bearing platform 11 from left to right. The sample is placed between two adjacent partitions 12. The distance between two adjacent partitions 12 is slightly larger than the width of the sample to be tested, so as to ensure that the sample can be easily placed and the position is determined, while effectively restricting the horizontal movement of the sample during the pushing process.

[0033] Two slide bars 13 are symmetrically fixed to the lower surface of the support platform 11. The slide bars 13 slide inside the slide groove 9. The cross sections of the slide bars 13 and the slide groove 9 are both T-shaped, which realizes the precise linear movement of the support platform 11 along the direction of the slide groove 9, resists the huge reaction force generated when the detection plate 5 is pressed down, prevents the entire support platform 11 from being lifted out of the detection platform 1, and ensures the stability of the equipment and the safety of the test.

[0034] The slider 13 is preferably made of wear-resistant engineering plastics, such as polyoxymethylene (POM) or ultra-high molecular weight polyethylene (UHMWPE), or coated with a layer of such material. These materials have self-lubricating properties and extremely low coefficient of friction. When matched with the slide groove 9 on the metal detection table 1, they can significantly reduce the resistance to movement. Furthermore, a reasonable assembly gap is provided between the slider 13 and the T-slot of the slide groove 9, which not only ensures the guiding accuracy of the movement but also avoids jamming caused by interference fit.

[0035] The lower surface of the support platform 11 is located between two sliding bars 13 and multiple fixing bars 14 are evenly fixed from left to right. The lower surface of the fixing bars 14 is higher than the upper surface of the testing platform 1, ensuring that there is no contact or friction between them and the testing platform 1 during movement. The fixing bars 14 are located between two adjacent partitions 12 in space.

[0036] exist Figure 1 , Figure 2 , Figures 5-7 In the middle: The lower surface of the testing table 1 is provided with an intermittent pushing mechanism 15 that drives the bearing mechanism 10 to move intermittently. The intermittent pushing mechanism 15 includes a fixed block 16, which is fixed to the left edge of the lower surface of the testing table 1. A telescopic cylinder 17 is fixed to the right surface of the fixed block 16. The telescopic cylinder 17 is preferably a servo electric cylinder, which can perform precise position and speed control.

[0037] The telescopic cylinder 17 has a fixed rod 18 fixedly connected to its telescopic end. The left end of the fixed rod 18 has a push plate 19 fixedly connected to it. The upper ends of the front and rear surfaces of the push plate 19 are both fixedly connected to hinge plates 20. The two hinge plates 20 are rotatably connected to a push plate 21 located above the push plate 19. The upper end of the push plate 21 is flush with the fixed bar 14.

[0038] A limiting member 22 is provided on the right side surface of the push plate 19. The limiting member 22 includes an L-shaped plate 23. The lower end of the L-shaped plate 23 is fixed to the right side surface of the push plate 19, and a limiting tube 24 is fixed to the upper end of the left side surface of the L-shaped plate 23. The limiting tube 24 is fixed to the L-shaped plate 23 by bolts.

[0039] A spring 25 is fixed to the inner right surface of the limiting tube 24, and a limiting rod 26 is fixed to the left end of the spring 25. When the spring 25 fails due to long-term use and needs to be replaced, a pulling force can be applied directly to pull it out of the limiting tube 24, and the old glue can be cleaned and a new spring can be re-attached.

[0040] The limiting rod 26 slides inside the limiting tube 24, and the left end of the limiting rod 26 is attached to the right side surface of the push plate 21; a spherical block is fixed to the left end of the limiting rod 26.

[0041] A U-shaped baffle 27 is fixed to the left side surface of push plate 19, and the upper end of the U-shaped baffle 27 is attached to the left side surface of push plate 21.

[0042] After a sample test is completed, the telescopic cylinder 17 extends at a constant speed, driving the push plate 19 and push plate 21 to move to the left. When the upper left side of push plate 21 contacts the right side of the fixing strip 14, it is obstructed. Under the continuous leftward pushing force, push plate 21 rotates clockwise around its hinge axis. At this time, the right side of push plate 21 presses against the limiting rod 26, forcing the limiting rod 26 to slide to the right into the limiting tube 24 and compressing the spring 25. When the upper end of push plate 21 completely passes the top edge of the fixing strip 14, its pressure on the limiting rod 26 disappears, the compressed spring 25 releases its elastic potential energy, pushes the limiting rod 26 to the left, and drives push plate 21 to swing counterclockwise until it returns to its initial vertical state. At this time, the left side of push plate 21 and the U-shaped baffle 2... 7. Contact is limited; at this time, push plate 21 is located on the left side of the fixing strip 14, telescopic cylinder 3 17 begins to retract, and push plate 21, which is in a vertical state, is driven to move to the right through push plate 19 and hinge plate 20. The left side of push plate 21 hooks onto the left side of fixing strip 14, thereby dragging the entire support platform 11 to the right; at the end of the stroke, the support platform 11 moves exactly one station to the right, accurately transporting the next sample to be tested directly below the test plate 5. At the same time, the push plate mechanism is also fully reset, ready for the next cycle; after all tests are completed, the staff can remove the bolts between L-shaped plate 23 and limiting tube 24, then remove the limiting tube 24, flip push plate 21 clockwise, and then manually pull the support platform 11 to the left until it is reset.

[0043] The working principle of this utility model is as follows: The operator first places multiple precast concrete test block samples from left to right into the workstations between adjacent partitions 12 on the support platform 11. Initially, the rightmost sample on the support platform 11 is located directly below the testing plate 5. At the start of the test, the telescopic cylinders 7 on both sides of the U-shaped seat 3 move synchronously, driving the support plate 8 and its rubber elastic pads to move towards each other, gently clamping and centering the sample from both sides. Then, the telescopic cylinder 4 is activated, driving the testing plate 5 to move vertically downwards along the guide of the support rod 6, applying pressure to the sample until it is destroyed, thus completing the strength test. After the test is completed, the telescopic cylinder 4 resets, and the telescopic cylinder... 2. The sample is released by retracting the cylinder 7. Then the indirect push mechanism 15 starts to work. The telescopic cylinder 3 17 extends and pushes the push plate 1 19 and the push plate 21 21 to the left. The push plate 21 21 completes the process of first compressing the spring 25 and flipping it over, and then returning to the vertical state under its action as it contacts and passes over a fixed bar 14. Then the telescopic cylinder 3 17 retracts and the push plate 21 21, which has returned to the vertical state, hooks and pulls the left side of the fixed bar 14, thereby dragging the entire support platform 11 to move precisely to the right by one station distance against the friction between the slide bar 13 and the slide groove 9, so that the original left adjacent sample is accurately moved to the bottom of the detection plate 5. This cycle continues until all samples have been tested.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A strength testing structure for prefabricated building components, comprising a testing platform (1), wherein a testing element (2) is provided on the upper surface of the testing platform (1), characterized in that, The upper surface of the testing station (1) has two symmetrically opened grooves (9) extending to the left and right sides, and the two grooves (9) are provided with a bearing mechanism (10). The bearing mechanism (10) includes a bearing platform (11), and multiple partitions (12) are uniformly fixed on the upper surface of the bearing platform (11) from left to right. Two slide bars (13) are symmetrically fixed on the lower surface of the bearing platform (11). Multiple fixing bars (14) are uniformly fixed on the lower surface of the bearing platform (11) between the two slide bars (13) from left to right. The lower surface of the testing platform (1) is provided with an intermittent push mechanism (15) that drives the bearing mechanism (10) to move intermittently.

2. The strength testing structure for prefabricated building components according to claim 1, characterized in that, The push mechanism (15) includes a fixed block (16), a telescopic cylinder three (17) is fixedly connected to the right side surface of the fixed block (16), a fixed rod (18) is fixedly connected to the telescopic end of the telescopic cylinder three (17), a push plate one (19) is fixedly connected to the left end of the fixed rod (18), a hinge plate (20) is fixedly connected to the upper end of both the front and rear sides of the push plate one (19), a push plate two (21) is rotatably connected between the two hinge plates (20) above the push plate one (19), a limit member (22) is provided on the right side surface of the push plate one (19), and a U-shaped baffle (27) is fixedly connected to the left side surface of the push plate one (19).

3. The strength testing structure for prefabricated building components according to claim 2, characterized in that, The limiting member (22) includes an L-shaped plate (23), a limiting tube (24) is fixedly connected to the upper end of the left side surface of the L-shaped plate (23), a spring (25) is fixedly connected to the inner right side surface of the limiting tube (24), and a limiting rod (26) is fixedly connected to the left end of the spring (25).

4. The strength testing structure for prefabricated building components according to claim 3, characterized in that, The fixing block (16) is fixed to the left edge of the lower surface of the detection table (1), the lower end of the L-shaped plate (23) is fixed to the right side surface of the push plate (19), the limiting rod (26) slides inside the limiting tube (24), and the left end of the limiting rod (26) is attached to the right side surface of the push plate (21), and the upper end of the U-shaped baffle (27) is attached to the left side surface of the push plate (21).

5. The strength testing structure for prefabricated building components according to claim 1, characterized in that, The slide bar (13) slides inside the slide groove (9), and the lower surface of the fixing bar (14) is higher than the upper surface of the detection table (1).

6. The strength testing structure for prefabricated building components according to claim 1, characterized in that, The testing component (2) includes a U-shaped seat (3), which is fixed to the upper surface of the testing table (1). A telescopic cylinder (4) is fixed to the upper surface of the U-shaped seat (3). A testing plate (5) is fixed to the telescopic end of the telescopic cylinder (4). The testing plate (5) is located inside the U-shaped seat (3). Support rods (6) are fixed to both the front and rear sides of the upper surface of the testing plate (5). The support rods (6) movably pass through the U-shaped seat (3). A telescopic cylinder (7) is fixed to both the front and rear surfaces of the U-shaped seat (3). A support plate (8) is fixed to the telescopic end of the telescopic cylinder (7). The support plate (8) is located inside the U-shaped seat (3).

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