Steel strength detection device for house building

Abstract

The application relates to the technical field of steel detection, and discloses a steel strength detection device for house building, which comprises a portal frame, a base fixedly installed at the bottom of the portal frame, a detection assembly, a sleeve ring, a simulation assembly and the like. The detection assembly is arranged on the portal frame and is used for detecting the strength of the steel. The sleeve ring is arranged below the lateral side of the portal frame and is used for cooperating with the detection assembly to detect the steel. The sleeve ring is made of a material with good heat conductivity. The simulation assembly is arranged on the portal frame and is connected with the sleeve ring. The simulation assembly cooperates with the sleeve ring to simulate a real compression scenario of the steel to be detected. The application can detect the temperature of the steel column before the tensile detection of the steel column, so that the steel column can be maintained in an optimal temperature range for detection. In addition, a transverse force can be provided during the detection, and the transverse force is a constant force, which simulates a real compression scenario of the building steel column, thereby improving the detection result of the steel column.

Description

Technical Field

[0001] This invention relates to the field of steel testing technology, and in particular to a device for testing the strength of steel in building construction. Background Technology

[0002] Construction steel can generally be divided into steel for steel structures and steel bars for reinforced concrete structures. It is the main load-bearing material for building construction. Before construction steel is used in building construction, its strength must be tested to ensure that its quality is up to standard.

[0003] Current steel strength testing devices for building construction, while capable of tensile testing, do not apply lateral forces during the tensile test to simulate the actual compression scenarios experienced by the steel. This results in inaccurate testing of the steel used in building construction, reducing its effectiveness. Therefore, there is an urgent need to design a steel strength testing device for building construction. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose a steel strength testing device for building construction.

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

[0006] A steel strength testing device for building structures includes a gantry frame, a base fixedly installed at the bottom of the gantry frame, and further includes:

[0007] The testing component is mounted on the gantry and is used to test the strength of the steel.

[0008] The collar is located below the horizontal edge of the gantry frame and is used to cooperate with the detection components to detect steel. The collar is made of a material with good thermal conductivity.

[0009] The simulation component is mounted on the gantry and is also connected to the collar. The simulation component, together with the collar, is used to simulate the real pressure scenario for the steel to be tested.

[0010] Temperature measuring component, which is set on collar and gantry, and is used to measure the temperature of the steel to be tested.

[0011] As a further technical solution of the present invention, the detection component includes: a connecting plate, which is horizontally arranged below the horizontal side of the gantry frame, a first hydraulic telescopic rod is installed on the top of the horizontal side of the gantry frame, and the output end of the first hydraulic telescopic rod is installed on the top of the connecting plate. Wedge-shaped clamps are installed on the bottom of the connecting plate and the top of the base for clamping the steel to be detected.

[0012] As a further technical solution of the present invention, the temperature measuring component includes: a shell, the shell being fixedly installed on the surface of a collar and sealed between the shell and the collar, a tube being installed on the surface of the shell and a through hole for communication between the tube and the shell, and a gas with a high coefficient of thermal expansion filling the space between the shell and the collar.

[0013] As a further technical solution of the present invention, a sliding plate is slidably arranged inside the tube body, and a third spring is fixedly installed between the sliding plate and the outer shell. A fixing rod is fixedly installed on the other side of the sliding plate, and a first copper sheet is fixedly installed on the surface of the fixing rod.

[0014] As a further technical solution of the present invention, a second copper sheet and a third copper sheet are fixedly installed on the inner wall of the tube, and a hot air blower and a cold air blower are installed on the inner side of the vertical side of the gantry frame. The first copper sheet is electrically connected to the hot air blower and the cold air blower, and the second copper sheet and the third copper sheet are electrically connected to the hot air blower and the cold air blower, respectively.

[0015] As a further technical solution of the present invention, the simulation component includes: a limiting plate, which is vertically arranged below the horizontal side of the gantry frame, and a first telescopic rod is horizontally installed at each of the four corners of the side of the limiting plate. The fixed ends of the four first telescopic rods are fixedly installed on the inner side of the vertical side of the gantry frame for limiting the limiting plate.

[0016] As a further technical solution of the present invention, a hollow plate is provided on the other side of the limiting plate, and two symmetrical sliding grooves are vertically opened on the side of the limiting plate, and a slider is slidably installed inside each sliding groove. Both sliders are fixedly installed on the end face of the hollow plate. A second hydraulic telescopic rod is installed on the outer side of the corresponding vertical side of the gantry frame, and the output end of the second hydraulic telescopic rod is installed on the side of the limiting plate.

[0017] As a further technical solution of the present invention, a sliding column is horizontally fixedly installed on the surface of the collar, the top end of the sliding column is slidably disposed inside the hollow plate, and the surface of the sliding column is slidably disposed inside the inner wall of the hollow plate through a spline.

[0018] As a further technical solution of the present invention, an abutment plate is fixedly installed at the top of the sliding column, a first spring is sleeved on the surface of the sliding column, and the two ends of the first spring are respectively installed on the inner wall of the hollow plate and the side of the abutment plate.

[0019] As a further technical solution of the present invention, inclined plates are rotatably installed at both ends of the inner wall of the hollow plate, and abutment plates are used to push the inclined plates to move. Damping rods are fixed on opposite sides of the inner wall of the hollow plate, and a fixed plate is fixedly installed at the top of the damping rod. A protruding post is fixed on the end face of the fixed plate. A second spring is sleeved on the surface of the damping rod, and the two ends of the second spring are respectively installed on the end face of the fixed plate and the inner wall of the hollow plate.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention, through the setting of detection components, simulation components and temperature measurement components, can detect the temperature of steel columns before tensile testing, so that the steel columns are kept in an optimal temperature range for testing. In addition, a lateral force can be provided during testing, and this lateral force is constant, simulating the scenario of real building steel columns being under pressure, thereby improving the test results of steel columns. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a steel strength testing device for building structures proposed in this invention;

[0023] Figure 2 This is a side view schematic diagram of a steel strength testing device for building structures proposed in this invention;

[0024] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0025] Figure 4 This is a schematic cross-sectional view of a hollow slab structure for a steel strength testing device for building structures proposed in this invention.

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle;

[0027] Figure 6 This is a schematic diagram of the hollow slab structure after cross-section, which is a steel strength testing device for building structures proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the structure of the steel strength testing device for building structures proposed in this invention after the hollow slab has been removed.

[0029] Figure 8 This is a schematic diagram of the outer shell and connection structure of a steel strength testing device for building structures proposed in this invention.

[0030] In the diagram: 1. Gantry frame; 2. Base; 3. Wedge clamp; 4. Connecting plate; 5. First hydraulic telescopic rod; 6. Hot air blower; 7. Cold air blower; 8. Second hydraulic telescopic rod; 9. Hollow plate; 10. Sliding column; 11. Collar; 12. Outer shell; 13. Tube body; 14. Limiting plate; 15. Slide groove; 16. First telescopic rod; 17. Abutment plate; 18. Inclined plate; 19. First spring; 20. Second spring; 21. Sliding plate; 22. Third spring; 23. Fixing rod; 24. First copper sheet; 25. Second copper sheet; 26. Third copper sheet; 27. Damping rod; 28. Fixing disc; 29. ​​Protruding column. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see the appendix Figure 1 -Appendix Figure 8 A steel strength testing device for building construction includes a gantry frame 1, a base 2 fixedly installed at the bottom of the gantry frame 1, and further includes a testing component, a collar 11, a simulation component, and a temperature measuring component. The testing component is set on the gantry frame 1 and is used to test the strength of the steel. The collar 11 is set below the horizontal side of the gantry frame 1 and is used to cooperate with the testing component to test the steel. The collar 11 is made of a material with good thermal conductivity. The simulation component is set on the gantry frame 1 and is also connected to the collar 11. The simulation component, together with the collar 11, is used to simulate a real pressure scenario for the steel to be tested. The temperature measuring component is set on the collar 11 and the gantry frame 1 and is used to measure the temperature of the steel to be tested.

[0034] Temperature testing of the steel column can be performed before tensile testing, ensuring the column is within an optimal temperature range for testing. Additionally, a constant lateral force can be applied during testing to simulate the compression scenario of a real building steel column, thereby improving the test results.

[0035] Please see the appendix Figure 1 -Appendix Figure 2 In a preferred embodiment, the detection component includes: a connecting plate 4, which is horizontally disposed below the horizontal side of the gantry frame 1. A first hydraulic telescopic rod 5 is installed on the top of the horizontal side of the gantry frame 1, and the output end of the first hydraulic telescopic rod 5 is installed on the top of the connecting plate 4. Wedge clamps 3 are installed on the bottom of the connecting plate 4 and the top of the base 2 for clamping the steel to be detected.

[0036] The steel to be tested is placed at two wedge clamps 3, and the steel column is clamped by the two wedge clamps 3. It should be noted that the wedge clamps 3 are mature existing technology, and this document has not made any improvements to them, so they will not be described in detail. Before clamping the steel column, the collar 11 needs to be put on the steel column.

[0037] Please see the appendix Figure 2 -Appendix Figure 5In a preferred embodiment, the temperature measuring component includes: a housing 12, which is fixedly mounted on the surface of a collar 11 and is sealed to the collar 11; a tube 13 is mounted on the surface of the housing 12 and a through hole for communication is provided between the tube 13 and the housing 12; a gas with a high coefficient of thermal expansion is filled between the housing 12 and the collar 11; a sliding plate 21 is slidably disposed inside the tube 13 and a third spring 22 is fixedly mounted between the sliding plate 21 and the housing 12; a fixing rod 23 is fixedly mounted on the other side of the sliding plate 21 and a first copper sheet 24 is fixedly mounted on the surface of the fixing rod 23; a second copper sheet 25 and a third copper sheet 26 are fixedly mounted on the inner wall of the tube 13; a hot air blower 6 and a cold air blower 7 are mounted on the inner side of the vertical side of the gantry frame 1; the first copper sheet 24 is electrically connected to both the hot air blower 6 and the cold air blower 7; and the second copper sheet 25 and the third copper sheet 26 are electrically connected to the hot air blower 6 and the cold air blower 7, respectively.

[0038] Because the collar 11 has good thermal conductivity, the temperature conduction on the steel column will cause changes in the gas volume between the outer shell 12 and the collar 11. If the temperature of the steel column is too high, the gas will expand and the volume will increase; if the temperature of the steel column is too low, the gas volume will decrease. This further change in gas volume will cause the slide plate 21 to move. The movement of the slide plate 21 will drive the first copper plate 24 to move. Depending on the temperature of the steel column, it will come into contact with the second copper plate 25 or the third copper plate 26. At this time, the hot air blower 6 or the cold air blower 7 will be activated to blow cold air when the steel column is overheated, and vice versa. This keeps the steel column in an optimal temperature range, so that the temperature of the steel column is maintained within the temperature range used by the steel column before testing, thereby improving the accuracy of the steel column test results.

[0039] Please see the appendix Figure 1 -Appendix Figure 8In a preferred embodiment, the simulation component includes: a limiting plate 14, which is vertically disposed below the horizontal side of the gantry frame 1, and four first telescopic rods 16 are horizontally installed at the four corners of the side of the limiting plate 14. The fixed ends of the four first telescopic rods 16 are fixedly installed on the inner side of the vertical side of the gantry frame 1 to limit the limiting plate 14. A hollow plate 9 is provided on the other side of the limiting plate 14. Two symmetrical sliding grooves 15 are vertically opened on the side of the limiting plate 14, and a slider is slidably installed inside each sliding groove 15. The two sliders are fixedly installed on the end face of the hollow plate 9. A second hydraulic telescopic rod 8 is installed on the outer side of the corresponding vertical side of the gantry frame 1, and the output end of the second hydraulic telescopic rod 8 is installed on the side of the limiting plate 14. A sliding column is horizontally fixedly installed on the surface of the collar 11. 10. The top of the sliding column 10 is slidably disposed inside the hollow plate 9, and the surface of the sliding column 10 is slidably disposed inside the inner wall of the hollow plate 9 via a spline. An abutment plate 17 is fixedly installed on the top of the sliding column 10. A first spring 19 is sleeved on the surface of the sliding column 10, and the two ends of the first spring 19 are respectively installed on the inner wall of the hollow plate 9 and the side of the abutment plate 17. An inclined plate 18 is rotatably installed on both ends of the inner wall of the hollow plate 9, and the abutment plate 17 is used to push the inclined plate 18 to move. A damping rod 27 is fixed on the opposite side of the inner wall of the hollow plate 9, and a fixed plate 28 is fixedly installed on the top of the damping rod 27. A protruding column 29 is fixed on the end face of the fixed plate 28. A second spring 20 is sleeved on the surface of the damping rod 27, and the two ends of the second spring 20 are respectively installed on the end face of the fixed plate 28 and the inner wall of the hollow plate 9.

[0040] When the temperature of the steel column is at the temperature of the application environment, the first hydraulic telescopic rod 5 and the second hydraulic telescopic rod 8 are activated. The first hydraulic telescopic rod 5 drives the connecting plate 4 to move upward. The connecting plate 4 moves upward, which drives one of the wedge clamps 3 to move upward. The wedge clamp 3 will then perform a tensile test on the steel column.

[0041] The second hydraulic telescopic rod 8 activates, causing the limiting plate 14 to move. The movement of the limiting plate 14 causes the hollow plate 9 to move. The movement of the hollow plate 9 causes the connecting components such as the inclined plate 18 and the damping rod 27 to move, and the first spring 19 generates elastic force. The elastic force generated by the first spring 19 applies a force to the sliding column 10, so that the sliding column 10 exerts a force on the collar 11 and the steel column towards the second hydraulic telescopic rod 8, thereby realistically simulating the scenario of the steel column being compressed during building use. This helps to improve the accuracy of steel column testing. When the steel column is stretched, it will deform and become waist-shaped. The collar 11 will slide on the surface of the steel column to the middle position of the waist shape. With the lateral force applied by the collar 11, and with the second hydraulic telescopic rod 8... The continuous action of rod 8 will cause the elastic force generated by the first spring 19 to increase. Due to the setting of the abutment plate 17, the inclined plate 18 will move due to the obstruction of the abutment plate 17. The movement of the inclined plate 18 will drive the protruding column 29 to move, the movement of the protruding column 29 will drive the fixed plate 28 to move, the movement of the fixed plate 28 will drive the damping rod 27 to move and cause the second spring 20 to generate elastic force. The elastic force generated by the two second springs 20 can have a reaction force on the inclined plate 18, which can further balance the force continuously increasing by the first spring 19, ensuring that the force applied to the steel column by the sliding column 10 and the collar 11 is a constant force, and avoiding the situation where the collar 11 and the sliding column 10 move when the steel column bends, causing the simulated steel column to be subjected to pressure changes.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A steel strength testing device for building structures, comprising a gantry frame (1), wherein a base (2) is fixedly installed at the bottom of the gantry frame (1), characterized in that, Also includes: The testing component is mounted on the gantry (1) and is used to test the strength of the steel. A collar (11) is provided below the horizontal side of the gantry frame (1); The simulation component is set on the gantry (1) and is also connected to the collar (11). The simulation component, together with the collar (11), is used to simulate the real pressure scenario of the steel to be tested. Temperature measuring component, the temperature measuring component is disposed on collar (11) and gantry (1), and the temperature measuring component is used to measure the temperature of the steel to be tested; The temperature measuring component includes: a housing (12), which is fixedly installed on the surface of a collar (11) and is sealed between the housing (12) and the collar (11); a tube (13) is installed on the surface of the housing (12), and a through hole for communication is provided between the tube (13) and the housing (12); a slide plate (21) is slidably arranged inside the tube (13), and a third spring (22) is fixedly installed between the slide plate (21) and the housing (12); and another... A fixing rod (23) is fixedly installed on the side, and a first copper sheet (24) is fixedly installed on the surface of the fixing rod (23). A second copper sheet (25) and a third copper sheet (26) are fixedly installed on the inner wall of the tube body (13). A hot air blower (6) and a cold air blower (7) are installed on the inner side of the vertical side of the gantry frame (1). The first copper sheet (24) is electrically connected to the hot air blower (6) and the cold air blower (7). The second copper sheet (25) and the third copper sheet (26) are electrically connected to the hot air blower (6) and the cold air blower (7) respectively.

2. The steel strength testing device for building structures according to claim 1, characterized in that, The detection component includes: a connecting plate (4), which is horizontally positioned below the horizontal side of the gantry (1). A first hydraulic telescopic rod (5) is installed on the top of the horizontal side of the gantry (1), and the output end of the first hydraulic telescopic rod (5) is installed on the top of the connecting plate (4). Wedge clamps (3) are installed on the bottom of the connecting plate (4) and the top of the base (2).

3. The steel strength testing device for building structures according to claim 2, characterized in that, The simulation component includes: a limiting plate (14), which is vertically set below the horizontal side of the gantry frame (1), and four first telescopic rods (16) are horizontally installed at the four corners of the side of the limiting plate (14), and the fixed ends of the four first telescopic rods (16) are fixedly installed on the inner side of the vertical side of the gantry frame (1).

4. The steel strength testing device for building structures according to claim 3, characterized in that, A hollow plate (9) is provided on the other side of the limiting plate (14). Two symmetrical sliding grooves (15) are vertically opened on the side of the limiting plate (14), and a slider is slidably installed inside each sliding groove (15). Both sliders are fixedly installed on the end face of the hollow plate (9).

5. The steel strength testing device for building structures according to claim 4, characterized in that, A sliding column (10) is horizontally fixedly installed on the surface of the collar (11). The top end of the sliding column (10) is slidably disposed inside the hollow plate (9), and the surface of the sliding column (10) is slidably disposed inside the inner wall of the hollow plate (9) via a spline.

6. The steel strength testing device for building structures according to claim 5, characterized in that, The top of the sliding column (10) is fixedly installed with an abutment plate (17), and a first spring (19) is sleeved on the surface of the sliding column (10). The two ends of the first spring (19) are respectively installed on the inner wall of the hollow plate (9) and the side of the abutment plate (17).

7. The steel strength testing device for building structures according to claim 6, characterized in that, Both ends of the inner wall of the hollow plate (9) are rotatably mounted with inclined plates (18). The opposite sides of the inner wall of the hollow plate (9) are fixed with damping rods (27), and the top of the damping rod (27) is fixedly mounted with a fixed plate (28). The end face of the fixed plate (28) is fixed with a protruding post (29). The surface of the damping rod (27) is sleeved with a second spring (20), and the two ends of the second spring (20) are respectively mounted on the end face of the fixed plate (28) and the inner wall of the hollow plate (9).

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