A detection device for the seismic performance of a house body

Abstract

This utility model relates to the field of seismic testing equipment technology, and in particular to a testing device for the seismic performance of building structures. It includes a housing and a rebound hammer body. The housing is fixedly connected to the outer surface of the rebound hammer body. An adjustment mechanism is provided inside the housing. The adjustment mechanism includes a U-shaped plate, an adjustment cylinder, a buffer cylinder, a buffer plate, and a connecting rod. A U-shaped groove is formed on the side wall of the housing. The U-shaped plate is slidably connected to the inner side wall of the U-shaped groove. This utility model, through the cooperation of the U-shaped plate, housing, and suction cup, utilizes the adjustment cylinder and suction cup to apply pressure to the rebound hammer. First, the sealing plate is squeezed to firmly fix the suction cup to the U-shaped plate. Then, the housing and rebound hammer can only move perpendicularly towards the wall along the U-shaped plate, ensuring the accuracy of the pressure angle and avoiding errors caused by angle deviation, thus maintaining the accuracy of the test results.

Description

Technical Field

[0001] This utility model relates to the field of seismic testing equipment technology, and in particular to a testing device for the seismic performance of building structures. Background Technology

[0002] Earthquake resistance is one of the most important and difficult issues facing civil engineering in building construction. The seismic-resistant structural system is the most critical issue to be considered in seismic design, playing a decisive role in safety and economy. Concrete strength is one of the important indicators of seismic performance. In the current technology, a rebound hammer is usually used to test the concrete of a building.

[0003] In existing technologies, when using a rebound hammer to test the strength of concrete, workers typically hold the rebound hammer directly and apply pressure to the wall, causing the hammer head to retract and store force before automatically releasing it. The instrument then determines the strength based on the rebound force. However, when workers hold the rebound hammer, it is easy for them not to hold it perpendicular to the test surface. The component of gravity will change the rebound value. At the same time, manual operation is unstable, and the pressure is easily applied too quickly or too slowly, resulting in unstable spring release force and large test errors. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the prior art. In the prior art, when using a rebound hammer to test the strength of concrete, the worker usually holds the rebound hammer directly and applies pressure to the wall, causing the hammer head of the rebound hammer to retract and store force, and then automatically release it. The instrument judges the strength based on the rebound force. However, when the worker holds the rebound hammer, it is easy not to hold it perpendicular to the test surface, and the component of gravity will change the rebound value. At the same time, the force applied manually is unstable, and the pressure is easy to be too fast or too slow, resulting in unstable spring release force and large test error. Therefore, this utility model proposes a device for testing the seismic performance of the main structure of a building.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for testing the seismic performance of a building structure includes a housing and a rebound hammer body, wherein the housing is fixedly connected to the outer surface of the rebound hammer body;

[0007] The housing is equipped with an adjustment mechanism, which includes a U-shaped plate, an adjustment cylinder, a buffer cylinder, a buffer plate, and a connecting rod. A U-shaped groove is formed on the side wall of the housing. The U-shaped plate is slidably connected to the inner side wall of the U-shaped groove. Multiple adjustment cylinders are respectively fixedly connected to the four corners of the inner side wall of the U-shaped plate. Multiple buffer cylinders are respectively fixedly connected to the four corners of the housing. Multiple buffer plates are respectively slidably connected to the inner side wall of the buffer cylinder. Multiple connecting rods are respectively fixedly connected between the buffer plate and the adjustment cylinder. The connecting rod is slidably connected to one side wall of the buffer cylinder.

[0008] Preferably, a guide rod is slidably connected to the side wall of the adjusting cylinder, an air outlet is provided on the side wall of the guide rod, and a suction cup is rotatably connected to the end of the guide rod away from the buffer cylinder.

[0009] Preferably, a sealing plate is fixedly connected to the side wall of the guide rod, and the sealing plate is slidably connected to the inner side wall of the adjusting cylinder.

[0010] Preferably, a baffle is fixedly connected to the end of the sealing plate away from the suction cup, an air vent is provided on the side wall of the adjusting cylinder, the baffle is slidably connected to the air vent, and a rotating plate is fixedly connected to the end of the guide rod away from the suction cup.

[0011] Preferably, a triangular block is fixedly connected to the side wall of the rotating plate, and multiple trapezoidal blocks are fixedly connected to the four corners of the housing, with the triangular block and the trapezoidal block being slidably connected.

[0012] Preferably, a return spring is fixedly connected between the buffer plate and the buffer cylinder, a compression spring is fixedly connected between the rotating plate and the adjusting cylinder, and a torsion spring is fixedly connected between the sealing plate and the adjusting cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the cooperation of structures such as the spiral plate, housing, and suction cup, when the pressure is applied to the rebound hammer by the adjusting cylinder and suction cup, the sealing plate is first squeezed to make the suction cup firmly fixed to the spiral plate. Then, the housing and rebound hammer can only move vertically towards the wall along the spiral plate, which ensures the accuracy of the pressure angle, avoids errors caused by angle deviation, and maintains the accuracy of the test results.

[0015] 2. Through the cooperation of the buffer cylinder, buffer plate and other structures, the pressure speed is kept within a constant range and the pressure speed is uniform, which ensures the accuracy of the test results. In addition, with the cooperation of the rotating plate, triangular block, trapezoidal block and other structures, the regulating cylinder is simultaneously introduced when the hammering is completed. The fixing of the spiral plate can be released without active operation, which is simple and quick to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the adjusting cylinder structure of a testing device for the seismic performance of a building structure proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of a spiral plate structure for a testing device for the seismic performance of a building structure proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of a trapezoidal block structure for a testing device for the seismic performance of a building structure proposed in this utility model;

[0019] Figure 4 for Figure 3 A magnified view of part A in the image.

[0020] In the diagram: 1. Housing, 2. Rebound device body, 3. Rebound plate, 4. Adjusting cylinder, 5. Buffer cylinder, 6. Buffer plate, 7. Connecting rod, 8. Guide rod, 9. Suction cup, 10. Sealing plate, 11. Baffle, 12. Rotating plate, 13. Triangular block, 14. Trapezoidal block, 15. Return spring, 16. Compression spring, 17. Torsion spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0023] Reference Figures 1-4 A device for testing the seismic performance of a building structure includes a housing 1 and a rebound hammer body 2, wherein the housing 1 is fixedly connected to the outer surface of the rebound hammer body 2.

[0024] The housing 1 is equipped with an adjustment mechanism, which includes a spiral plate 3, an adjustment cylinder 4, a buffer cylinder 5, a buffer plate 6, and a connecting rod 7. A spiral groove is formed on the side wall of the housing 1. The spiral plate 3 is slidably connected to the inner side wall of the spiral groove. Multiple adjustment cylinders 4 are fixedly connected to the four corners of the inner side wall of the spiral plate 3. Multiple buffer cylinders 5 are fixedly connected to the four corners of the housing 1. Multiple buffer plates 6 are slidably connected to the inner side wall of the buffer cylinder 5. The buffer cylinder 5 contains hydraulic oil with added rust inhibitor to prevent corrosion of the spring. Multiple oil holes are formed on the buffer plate 6. A return spring 15 is fixedly connected between the buffer plate 6 and the buffer cylinder 5. Multiple connecting rods 7 are fixedly connected between the buffer plate 6 and the adjustment cylinder 4. The connecting rods 7 are slidably connected to one side wall of the buffer cylinder 5.

[0025] A guide rod 8 is slidably connected to the side wall of the adjusting cylinder 4. The guide rod 8 is also rotatably connected to the side wall of the adjusting cylinder 4. The guide rod 8 is not sealed to the side of the adjusting cylinder 4 near the suction cup 9, but is sealed to the side of the adjusting cylinder 4 away from the suction cup 9. The end of the guide rod 8 away from the buffer cylinder 5 is rotatably connected to the suction cup 9. An air outlet is provided on the side wall of the guide rod 8. The inside of the guide rod 8 is hollow. The suction cup 9 is connected to the adjusting cylinder 4 through the hollow guide rod 8 and the air outlet on the guide rod 8. A sealing plate 10 is fixedly connected to the side wall of the guide rod 8. The sealing plate 10 is slidably connected to the inner side wall of the adjusting cylinder 4. The sealing plate 10 is also rotatably connected to the inner side wall of the adjusting cylinder 4. A torsion spring 17 is fixedly connected between the sealing plate 10 and the adjusting cylinder 4.

[0026] A baffle 11 is fixedly connected to the end of the sealing plate 10 away from the suction cup 9. A vent is provided on the side wall of the adjusting cylinder 4. The baffle 11 is slidably connected to the vent, and the baffle 11 is also rotatably connected to the vent. A rotating plate 12 is fixedly connected to the end of the guide rod 8 away from the suction cup 9. A compression spring 16 is fixedly connected between the rotating plate 12 and the adjusting cylinder 4.

[0027] A triangular block 13 is fixedly connected to the side wall of the rotating plate 12, and multiple trapezoidal blocks 14 are fixedly connected to the four corners of the housing 1. The triangular block 13 and the trapezoidal block 14 are slidably connected. Both the triangular block 13 and the trapezoidal block 14 are made of elastic material and can be slightly deformed. When the triangular block 13 and the trapezoidal block 14 are in contact, since the triangular block 13 is fixed on the rotating plate 12, the triangular block 13 will rotate along the rotating plate 12. Therefore, the end face of the triangular block 13 will twist with the trapezoidal block 14. However, the triangular block 13 and the trapezoidal block 14 can be slightly deformed. At the same time, the rotation angle of the triangular block 13 and the trapezoidal block 14 is small, so there will be no damage or poor rotation. This also prevents the rotating plate 12 from interfering with the connecting rod 7.

[0028] In this invention, according to the usage guidelines of the rebound hammer, a flat, dense area without laitance should be selected for testing to ensure that the target area can be well adsorbed by the suction cups 9. The housing 1 is held and pressure is applied to the wall, with the four suction cups 9 resting against the wall. The suction cups 9 drive the guide rod 8 and the sealing plate 10 towards the adjusting cylinder 4. The sealing plate 10 forces the gas in the adjusting cylinder 4 from the air outlet on the guide rod 8 into the guide rod 8. The gas escapes from the gap between the suction cups 9 and the wall. As the sealing plate 10 slides, it drives the baffle 11 to slide, and the baffle 11 always seals the air vent. The spring 16 is stretched and compressed, and multiple suction cups 9 retract into the U-shaped plate 3, flush with it. The suction cups 9 firmly fix the U-shaped plate 3. At this time, pressure continues to be applied to the wall by holding the housing 1. The housing 1 drives the rebound device body 2 to move along the U-shaped plate 3 towards the wall. Under the limiting action of the U-shaped plate 3, it moves vertically towards the wall. The buffer plate 6 slides in the buffer cylinder 5. The hydraulic oil in the buffer cylinder 5 passes through the oil hole in the buffer plate 6, slowing down the movement speed of the buffer plate 6. The greater the pressure applied, the higher the buffering force, keeping the movement speed of the rebound device body 2 stable and avoiding excessive pressure. The pressure is adjusted to ensure the stability of the spring energy release. When the hammer of the rebound spring body 2 is close to release, the triangular block 13 on the rotating plate 12 begins to contact the trapezoidal block 14 on the housing 1. The trapezoidal block 14 squeezes the triangular block 13, which drives the rotating plate 12 to rotate. The rotating plate 12 drives the guide rod 8 and the baffle 11 to rotate. When the hammer is just released, the baffle 11 rotates to a position where it is misaligned with the vent. The baffle 11 no longer seals the vent, and outside air enters the regulating cylinder 4 through the vent. The suction cup 9 loses its adsorption force on the wall. At this time, the springs in the regulating cylinder 4 and the buffer cylinder 5... Since none of the components have reset, there will be no vibration affecting the rebound hammer readings. At this point, the rebound hammer body 2 can be easily removed. After removing the rebound hammer body 2, under the action of the reset spring 15, the buffer plate 6 drives the connecting rod 7 to reset the return plate 3 and the triangular block 13. Under the action of the compression spring 16, the guide rod 8 drives the sealing plate 10 to reset. Under the action of the torsion spring 17, the sealing plate 10 drives the baffle 11 to reset, allowing the next test to be completed. This ensures that the angle to the wall is perpendicular during operation, the pressure speed is uniform, and the accuracy of the test results is guaranteed. The operation is simple and quick.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0030] 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.

Claims

1. A device for testing the seismic performance of a building structure, comprising a housing (1) and a rebound hammer body (2), characterized in that, The housing (1) is fixedly connected to the outer surface of the rebounder body (2); The housing (1) is provided with an adjustment mechanism, which includes a spiral plate (3), an adjustment cylinder (4), a buffer cylinder (5), a buffer plate (6), and a connecting rod (7). A spiral groove is provided on the side wall of the housing (1). The spiral plate (3) is slidably connected to the inner side wall of the spiral groove. Multiple adjustment cylinders (4) are respectively fixedly connected to the four corners of the inner side wall of the spiral plate (3). Multiple buffer cylinders (5) are respectively fixedly connected to the four corners of the housing (1). Multiple buffer plates (6) are respectively slidably connected to the inner side wall of the buffer cylinder (5). Multiple connecting rods (7) are respectively fixedly connected between the buffer plate (6) and the adjustment cylinder (4). The connecting rod (7) is slidably connected to one side wall of the buffer cylinder (5).

2. The testing equipment for the seismic performance of building structures according to claim 1, characterized in that, A guide rod (8) is slidably connected to the side wall of the regulating cylinder (4). An air outlet is provided on the side wall of the guide rod (8). A suction cup (9) is rotatably connected to the end of the guide rod (8) away from the buffer cylinder (5).

3. The testing equipment for the seismic performance of building structures according to claim 2, characterized in that, A sealing plate (10) is fixedly connected to the side wall of the guide rod (8), and the sealing plate (10) is slidably connected to the inner side wall of the adjusting cylinder (4).

4. The testing equipment for the seismic performance of building structures according to claim 3, characterized in that, A baffle (11) is fixedly connected to one end of the sealing plate (10) away from the suction cup (9). A vent is provided on the side wall of the adjusting cylinder (4). The baffle (11) is slidably connected to the vent. A rotating plate (12) is fixedly connected to one end of the guide rod (8) away from the suction cup (9).

5. The testing equipment for the seismic performance of building structures according to claim 4, characterized in that, A triangular block (13) is fixedly connected to the side wall of the rotating plate (12), and multiple trapezoidal blocks (14) are fixedly connected to the four corners of the shell (1). The triangular block (13) and the trapezoidal block (14) are slidably connected.

6. The testing equipment for the seismic performance of building structures according to claim 4, characterized in that, A return spring (15) is fixedly connected between the buffer plate (6) and the buffer cylinder (5), a compression spring (16) is fixedly connected between the rotating plate (12) and the adjusting cylinder (4), and a torsion spring (17) is fixedly connected between the sealing plate (10) and the adjusting cylinder (4).

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