A strength testing device for steel structure connectors in houses

Abstract

This invention relates to the field of metal component strength testing technology, specifically to a strength testing device for steel structure connectors in buildings. The device includes a testing cabinet and hydraulic components. Two electric clamps are slidably connected to the top of the testing cabinet. A first cylinder is fixedly connected to the testing cabinet, with two connecting rods hinged to its free end. The other end of each connecting rod is hinged to a top abutment. The bottom of each electric clamp extends into the testing cabinet and is fixedly mounted on a slide rail. The outer surface of the top abutment slides against the inner wall of the slide rail. Guide rods are slidably connected through the side walls of the two slide rails, with a pressure-bearing part detachably connected to one end of each guide rod extending into the slide rail. When performing compressive strength testing, the specimen will generate compressive stress on the inner side and tensile stress on the outer side of the bent portion during bending. This invention can simultaneously detect this tensile stress and also has the function of tensile strength testing, making it highly applicable.

Description

Technical Field

[0001] This invention relates to the field of metal component strength testing technology, specifically to a strength testing device for steel structure connectors in buildings. Background Technology

[0002] Strength testing of steel structures is a crucial step in ensuring the safety, stability, and durability of buildings. In steel structures, main components such as beams, columns, and supports are assembled using bolts, welds, and rivets, and loads (such as self-weight and live loads) are transferred between different components.

[0003] Chinese Patent No. CN214584453U discloses a device for testing the compressive strength of metal sheets used in building construction. The device includes a workbench with a testing instrument body mounted on its upper end. Two slides are slidably connected to the upper end of the workbench, and the two slides are threadedly connected to the same first screw. A first handle is fixedly connected to one end of the first screw. Two sliding blocks are slidably connected to the upper end of the slides, and a driving mechanism is provided on the upper end of the workbench for moving the sliding blocks. This invention, by setting up slides, a first screw, a first handle, sliding blocks, and a driving mechanism, facilitates the adjustment of the fixed distance between the two slides and the two sliding blocks, allowing the device to adapt to fixing metal sheets of different specifications, thus improving the device's convenience. Simultaneously, by setting up a pressure plate, a spherical protrusion, and a fastening mechanism, the pressure exerted on the metal sheet during testing will not damage its fixed end, further enhancing the device's practicality.

[0004] The force directions of a building's steel structure are complex and diverse; forces in different directions will produce different stress effects on the components, such as... Figure 9 As shown, component a is a pressure-bearing component, component b is a supporting component, and component c is a stabilizing component. When component a is subjected to downward pressure and bends, component b will be subjected to inward tension (affected by factors such as the weight of the load, if the pressure on component a is too great, component b will be subjected to excessive tension and may deform inward or tilt). Component c is also subjected to tension.

[0005] When using the above-mentioned device, it can only perform compressive strength tests on the components. However, the force direction of building components is complex and diverse, so its applicability is relatively low. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a strength testing device for steel structure connectors of houses to solve the above problems.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A strength testing device for steel structure connectors in a building includes a testing cabinet and hydraulic components. Two electric clamps are slidably connected to the top of the testing cabinet. A first cylinder is fixedly connected to the testing cabinet. Two connecting rods are hinged to the free end of the first cylinder. The other end of the connecting rods is hinged to a top abutment. The bottom of the electric clamps extends into the testing cabinet and is fixedly provided with a slide rail. The outer surface of the top abutment slides in cooperation with the inner wall of the slide rail.

[0009] Guide rods are slidably connected through the side walls of the two slide rails that are far apart from each other. One end of the guide rod that extends into the slide rail is detachably connected to a pressure bearing part. A pressure sensor is installed on the side of the slide rail near the pressure bearing part at the top. An elastic element is installed inside the slide rail on the side of the pressure bearing part away from the top.

[0010] It also includes a warning light and a sensor assembly, which is used to detect the movement of the guide rod and is electrically connected to the warning light.

[0011] Preferably, it also includes an upper cover set on the top of the testing table cabinet, and hydraulic components are installed on the upper cover. The hydraulic components include a second cylinder, and a pressure plate is provided at the bottom of the second cylinder.

[0012] Preferably, the two electric clamps are arranged opposite each other, and the center of the space between them is located directly below the pressure plate. A photoelectric sensor is installed on the electric clamp, and both the electric clamp and the first cylinder are electrically connected to the photoelectric sensor.

[0013] Preferably, the bottom of the electric clamp is provided with a guide member, and the top of the testing table cabinet is provided with a guide groove that matches the guide member. The direction of the guide groove is perpendicular to the movement direction of the free end of the second cylinder.

[0014] Preferably, the sensing component includes a first electrode disposed on the guide rod, and a second electrode matching the first electrode is fixedly connected to the slide rail. The second electrode is electrically connected to the warning light. When the guide rod extends out of the slide rail, the first electrode corresponds to the second electrode.

[0015] Preferably, it also includes a stabilizing plate, the pressure plate is fixedly connected to the stabilizing plate, at least two stabilizing rods are provided between the testing table cabinet and the upper cover, at least two guide rings are fixedly connected to the stabilizing plate, and the stabilizing rods and guide rings are slidably connected through each other.

[0016] Preferably, one of the stabilizer bars is rotatably connected through the top wall of the testing cabinet, and the section of the stabilizer bar located above the testing cabinet is provided with a sliding groove.

[0017] Preferably, the groove is composed of a spiral groove and a straight groove, with the bottom end of the spiral groove communicating with the top end of the straight groove; the guide ring is provided with a ball, and both the spiral groove and the straight groove slide in cooperation with the ball.

[0018] Preferably, a rotating support is fixedly connected to the free end of the first cylinder, and the ends of the two connecting rods are hinged to the rotating support; a limiting rack is fixedly connected to one side of the rotating support, and the cross-section of the teeth of the limiting rack is a right triangle.

[0019] Preferably, a rotating block is rotatably connected to a stabilizing rod located inside the testing cabinet. A torsion spring is installed on the stabilizing rod between the top wall of the testing cabinet and the rotating block. A first stop and a limiting body are fixedly provided on the rotating block. The limiting rack matches the first stop. A second stop matching the limiting body is provided on the top wall of the testing cabinet.

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

[0021] 1. When performing compressive strength testing, the specimen will generate compressive stress on the inner side and tensile stress on the outer side during the bending process. This invention can detect the tensile stress at the same time. In addition, this invention also has the function of tensile strength testing, which has high applicability.

[0022] 2. During the compressive strength test of this invention, the center position of the specimen is automatically aligned directly below the pressure plate. Compared with traditional strength testing devices, it is not affected by factors such as specimen length or clamp displacement. After the specimen is clamped and fixed, there is no need to spend extra time adjusting the position of the specimen or pressure plate, which significantly improves work efficiency. At the same time, due to the simplification of the operation process and the increase in automation, users do not need to have superb operating skills and rich experience. They only need to operate according to a simple operating guide, which effectively reduces the workload of users, lowers the technical requirements for operators, and further enhances the practicality and ease of use of the device.

[0023] 3. When performing downward pressure strength testing, the specimen will be subjected to a large tensile force on the electric clamps at both ends of the specimen when it has entered the bending stage. The warning light will automatically flash to remind the staff to pay attention to the operation of the device, so as to ensure that the device operates under safe and stable conditions.

[0024] 4. During the compressive strength test of this invention, the free end of the first cylinder is automatically locked to prevent accidental touch of the control button or issuance of incorrect operation commands during the test. This would cause the first cylinder to contract before the specimen completes the specified strength test, resulting in a drastic change in the stress state of the specimen, which could lead to local damage to the device and the specimen, and affect the integrity and accuracy of the test data. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2This is a cross-sectional view of the present invention. Figure 1 .

[0027] Figure 3 This is a cross-sectional structural diagram of the present invention. Figure 2 .

[0028] Figure 4 This is a schematic diagram of the structure of the present invention mounted on the top.

[0029] Figure 5 This is a schematic diagram of the structure for mounting the rotating block of the present invention.

[0030] Figure 6 This is a schematic diagram of the stabilizer bar of the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of the sensing component of the present invention.

[0032] Figure 8 For the present invention Figure 1 A magnified structural diagram of part A in the middle.

[0033] Figure 9 This is a schematic diagram of the structure of the specimen of the present invention.

[0034] In the attached diagram: 1. Testing cabinet; 2. Upper cover; 3. Electric clamp; 4. Photoelectric sensor; 5. Slide rail; 6. First cylinder; 7. Linkage rod; 8. Top stop; 9. Guide rod; 11. Pressure sensor; 12. Elastic element; 13. Warning light; 14. Stabilizing plate; 15. Second cylinder; 16. Pressure plate; 17. Guide element; 18. Guide groove; 19. First electrode; 20. Second electrode; 21. Stabilizing rod; 22. Guide ring; 23. Spiral groove; 24. Straight groove; 25. Rotary support; 26. Limiting rack; 27. Rotating block; 28. Torsion spring; 29. ​​First stop; 30. PLC control cabinet; 31. Second stop; 32. Limiting body. Detailed Implementation

[0035] The following will be for reference. Figures 1 to 9 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] First embodiment:

[0037] A strength testing device for steel structure connectors in buildings, such as Figures 1-4As shown, the device includes a testing cabinet 1 and hydraulic components. Two electric clamps 3 are slidably connected to the top of the testing cabinet 1. A first cylinder 6 is fixedly connected to the testing cabinet 1. Two connecting rods 7 are hinged to the free end of the first cylinder 6. A rotating support 25 is fixedly connected to the free end of the first cylinder 6. The ends of the two connecting rods 7 are hinged to the rotating support 25. A top abutment 8 is hinged to the other end of the connecting rods 7. The bottom of the electric clamps 3 extends into the testing cabinet 1 and is fixedly provided with a slide rail 5. The outer surface of the top abutment 8 slides in cooperation with the inner wall of the slide rail 5. When the free end of the first cylinder 6 retracts, the connecting rods 7 drive the top abutment 8 to abut against the slide rail 5, causing the two electric clamps 3 to move closer to each other and toward the center of the device, thus reducing the distance between the two electric clamps 3.

[0038] Guide rods 9 are slidably connected through the sidewalls of the two slide rails 5 that are far apart from each other. One end of the guide rod 9 that extends into the slide rail 5 is detachably connected to a pressure bearing part. The guide rod 9 and the pressure bearing part are threaded together. A pressure sensor 11 is installed on the side of the top 8 near the pressure bearing part. An elastic element 12 is installed inside the slide rail 5 on the side of the pressure bearing part away from the top 8. The elastic element 12 is a spring or elastic pad, etc. With its advanced sensing technology and reliable signal processing capabilities, the pressure sensor 11 can accurately detect the specific value of the compressive force when there is a compressive force between the top 8 and the pressure bearing part, and convert this physical quantity into an electrical signal, which is then transmitted to the subsequent data acquisition and processing system (in this embodiment, the system is a PLC control cabinet 30).

[0039] like Figures 1-3 As shown, it also includes an upper cover 2 set on the top of the test bench cabinet 1. Hydraulic components are installed on the upper cover 2. The hydraulic components include a second cylinder 15, and a pressure plate 16 is set at the bottom of the second cylinder 15. The second cylinder 15, as the core power drive component, adopts high-performance hydraulic or pneumatic transmission technology (hydraulic cylinder or pneumatic cylinder can be selected according to requirements). The pressure plate 16 is stably set at the bottom of the second cylinder 15 through a high-strength mechanical connection. The pressure plate 16 is made of an alloy material with high hardness, high wear resistance and good rigidity. In actual test operation, the second cylinder 15 drives the pressure plate 16 to perform precise lifting and lowering movements according to the preset test program and the instructions issued by the control system. When the second cylinder 15 pushes the pressure plate 16 down, the pressure plate 16 gradually approaches the specimen in a vertical and uniform manner. Once it contacts the specimen, the pressure plate 16 applies a continuously increasing downward pressure to the specimen, thereby carrying out a downward pressure strength test.

[0040] Two electric clamps 3 are arranged opposite each other, and the center of the space between them is located directly below the pressure plate 16. A photoelectric sensor 4 is installed on the electric clamp 3, and both the electric clamp 3 and the first cylinder 6 are electrically connected to the photoelectric sensor 4.

[0041] like Figure 2 and Figure 3 As shown, the bottom of the electric clamp 3 is provided with a guide member 17, and the top of the test cabinet 1 is provided with a guide groove 18 that matches the guide member 17. The direction of the guide groove 18 is perpendicular to the movement direction of the free end of the second cylinder 15. Through the cooperation of the guide member 17 and the guide groove 18, the electric clamp 3 can be provided with a stable and reliable guiding effect. The movement trajectory of the electric clamp 3 is close to or away from the central axis of the second cylinder 15. That is, the center of the space between the two electric clamps 3 is always located directly below the pressure plate 16. This ensures that during the downward pressure strength test of the specimen, the pressure plate 16 can accurately act on the center of the specimen, so that the specimen deforms uniformly under vertical pressure. The specimen is in a stable and symmetrical stress state during the test, avoiding test errors caused by specimen offset or uneven force, and ensuring the accuracy and reliability of mechanical performance test data.

[0042] like Figure 3 As shown, it also includes a stabilizing plate 14, a pressure plate 16 fixedly connected to the stabilizing plate 14, at least two stabilizing rods 21 between the testing cabinet 1 and the upper cover 2, and at least two guide rings 22 fixedly connected to the stabilizing plate 14. The stabilizing rods 21 and the guide rings 22 are slidably connected through each other. Through the coordinated arrangement of the stabilizing plate 14, the stabilizing rods 21 and the guide rings 22, the stability of the pressure plate 16 during lifting and pressing can be improved.

[0043] In this embodiment, the device first clamps one end of the specimen using one of the electric clamps 3. Then, the first cylinder 6 is activated to retract its free end, and the connecting rod 7 drives the top 8 to abut against the slide rail 5, causing the two electric clamps 3 to move closer to each other. The distance between the two electric clamps 3 gradually decreases. When the specimen moves to the point where its other end extends into the other electric clamp 3, the photoelectric sensor 4 detects the signal of the specimen entering and transmits it to the PLC control cabinet 30. (The photoelectric sensor 4 is a high-precision detection element based on the photoelectric effect principle, which consists of a transmitter and a receiver.) The emitter can emit a beam of light with a specific wavelength and intensity, which travels in a straight line through the air to form a precise detection area. When the specimen moves into the detection area, its physical presence will block part or all of the light, causing a significant change in the intensity of the light signal received by the receiver. The photoelectric sensor 4 integrates an advanced photoelectric conversion circuit and a signal processing chip, which can quickly and accurately convert this change in light signal intensity into an electrical signal. The PLC control cabinet 30 controls the first cylinder 6 to stop and controls another electric clamp 3 to clamp and fix the other end of the specimen.

[0044] It should be noted that during the movement of the electric clamp 3 in this device, the center of the space between the two electric clamps 3 is always located directly below the pressure plate 16. That is, after the electric clamp 3 finishes moving, the center of the specimen is located directly below the pressure plate 16.

[0045] Traditional strength testing devices often require tedious readjustment of the clamp or pressure plate 16 positions to accommodate specimens of varying lengths. In contrast, this device automatically aligns the center of the specimen directly beneath the pressure plate 16 regardless of its length. Compared to traditional devices, it is unaffected by specimen length or clamp displacement. Once the specimen is clamped and fixed, no additional time is required to adjust the specimen or pressure plate 16, significantly improving work efficiency. Furthermore, the simplified operation and increased automation eliminate the need for highly skilled operators with extensive experience; users can simply follow a simple operating guide, effectively reducing their workload and technical requirements, thus enhancing the device's practicality and ease of use.

[0046] It is worth noting that during the downward pressure strength test, the pressure plate 16 moves downward and applies pressure to the specimen. When the specimen has entered the bending stage, its geometry changes significantly, resulting in a complex stress distribution inside the specimen. During bending, the specimen generates compressive stress on the inner side of the bending part and tensile stress on the outer side. That is, the specimen will exert an inward pulling force on the two electric clamps 3, and the two electric clamps 3 tend to move closer to each other. The pressure-bearing part abuts against the top 8 (the elastic element 12 is compressed; in this embodiment, the compressibility of the elastic element 12 is relatively small). The pressure sensor 11 can detect this tensile force value, which is equivalent to detecting... Figure 9 The tensile force on component b enables the device to detect the tensile force generated by surrounding components while performing compressive strength testing on the specimen.

[0047] When the device switches to the tensile strength detection mode, the same principle applies. After the specimen is clamped and fixed, the first cylinder 6 is activated so that its free end extends and the top 8 contacts the pressure-bearing part. An interaction force is generated between the two. As the first cylinder 6 continues to apply power, this interaction force gradually increases, forming a tensile force on the specimen. The pressure sensor 11 can detect the value of this tensile force, further improving the practicality of the device.

[0048] Second embodiment:

[0049] Based on the first embodiment, such as Figure 1 , Figure 3 , Figure 4 and Figure 7As shown, it also includes a warning light 13 and a sensing component. The sensing component is used to detect the movement state of the guide rod 9 and is electrically connected to the warning light 13. The sensing component includes a first electrode 19 disposed on the guide rod 9 and a second electrode 20 that matches the first electrode 19 is fixedly connected to the slide rail 5. The second electrode 20 is electrically connected to the warning light 13. When the guide rod 9 extends out of the slide rail 5, the first electrode 19 corresponds to the second electrode 20.

[0050] In this embodiment, when the device performs a downward pressure strength test on the specimen, based on the simultaneous tensile force detection of surrounding components in the first embodiment, the pressure-bearing part will contact the top 8, and the elastic element 12 will be compressed. The guide rod 9 will extend out of the slide rail 5 and move, so that the first electrode 19 corresponds to the second electrode 20 (the first electrode 19 and the second electrode 20 form a complete circuit with the warning light 13 and the power supply through wires). The warning light 13 flashes, indicating that the specimen has entered the bending stage, and the specimen applies a large tensile force to the electric clamps 3 at both ends of the specimen, reminding the staff to pay attention to the operation of the device (excessive tensile force). Force may cause relative slippage between the gripper of the electric clamp 3 and the specimen, affecting the clamping firmness; it may also cause excessive load on the transmission components of the electric clamp 3, accelerating its wear and damage. Therefore, the flashing of the warning light 13 plays a crucial warning role. It can promptly remind the staff to pay close attention to the operation of the device, including the working status of the electric clamp 3, the bending progress of the specimen, and the stress on each component of the device. Based on the warning information, the staff can selectively adjust the operating parameters of the device, such as controlling the pressing speed, to ensure that the device operates under safe and stable conditions.

[0051] It is particularly important to note that after prolonged and frequent use, the elastic element 12 in the device will inevitably experience fatigue and aging, leading to a decline in its performance or even damage. When the elastic element 12 is damaged, the most obvious sign is a shortening in length. When the elastic element 12 shortens to a certain extent, the first electrode 19 and the second electrode 20, which were originally separated, will come into contact with each other due to the change in the position of the elastic element 12, causing the warning light 13 to flash, thus informing the operator that the elastic element 12 is damaged. It is also worth noting that the device employs a detachable guide rod 9 design; the guide rod 9 is not... Not only does it guide the movement of the top 8, but it is also closely related to the installation and fixation of the elastic element 12. When the elastic element 12 needs to be replaced, the staff only needs to remove the guide rod 9 from the device. At this time, the installation space of the elastic element 12 is fully exposed, and the staff can easily take out the damaged elastic element 12 and install a new, high-performance elastic element 12. After installation, the guide rod 9 is reinstalled into the device. This detachable design greatly shortens the replacement time of the elastic element 12, improves the maintenance efficiency of the device, and also ensures the reliability and stability of the device during long-term use.

[0052] like Figure 2 As shown, one of the stabilizing rods 21 is rotatably connected to the top wall of the testing platform cabinet 1, and a sliding groove is provided on the section of the stabilizing rod 21 located above the testing platform cabinet 1; as Figure 6 As shown, the slide is composed of a spiral groove 23 and a straight groove 24. The bottom end of the spiral groove 23 is connected to the top end of the straight groove 24. A ball is provided in the guide ring 22 (not shown). Both the spiral groove 23 and the straight groove 24 slide with the ball. During the lifting and lowering of the guide ring 22, when the ball moves in the spiral groove 23, the corresponding stabilizing rod 21 rotates. When the ball moves in the straight groove 24, the position of the stabilizing rod 21 is locked and it cannot rotate.

[0053] like Figure 2 and Figure 5 As shown, a limiting rack 26 is fixedly connected to one side of the rotating support 25, and the cross-section of the teeth of the limiting rack 26 is a right triangle.

[0054] A rotating block 27 is rotatably connected to a stabilizing rod 21 located inside the testing cabinet 1. A torsion spring 28 is installed on the stabilizing rod 21 between the inner top wall of the testing cabinet 1 and the rotating block 27. A first stop 29 and a limiting body 32 are fixedly installed on the rotating block 27. A limiting rack 26 matches the first stop 29. A second stop 31 that matches the limiting body 32 is provided on the inner top wall of the testing cabinet 1.

[0055] In actual testing, there are many factors that may interfere with the test. If the free end of the first cylinder 6 can retract freely, when the electric clamp 3 generates a force to move towards the center, the free end of the first cylinder 6 may contract under the action of the force. This contraction will cause the stress on the specimen in the vertical direction to change. The originally uniform vertical downward pressure will shift or fluctuate due to the contraction of the free end of the first cylinder 6, making the pressure on the specimen no longer uniform, thus affecting the distribution of internal stress in the specimen, and ultimately causing deviations in the measured compressive strength and other data. On the other hand, operational errors are also difficult to completely avoid in actual testing. Operators may accidentally touch the control button or issue incorrect operating commands during the test due to negligence, lack of experience, or unfamiliarity with the operating procedures of the device (for example, during the pressing of the pressure plate 16, the first cylinder 6 is mistakenly contracted). This will cause the stress state of the specimen to change drastically before the specified strength test is completed, which may cause local damage to the device and the specimen, and affect the integrity and accuracy of the test data.

[0056] In the initial state of use, the ball bearings are located within the spiral groove 23. At this time, the first stop 29 and the limiting rack 26 are not in contact, so the free end of the first cylinder 6 can extend and retract freely, and the position of the electric clamp 3 can be freely adjusted. When performing a downward pressure strength test, the free end of the second cylinder 15 extends to drive the pressure plate 16, the stabilizing plate 14, and the guide ring 22 to move downward. In the initial stage of downward movement, the ball bearings slide within the spiral groove 23, and the corresponding stabilizing rod 21 rotates in the forward direction, supported by the torsion spring 28. The function is that the rotating block 27 and the first stop 29 follow the stabilizing rod 21 to rotate in the forward direction. When the ball moves to the bottom of the spiral groove 23, the first stop 29 rotates to the limit in the forward direction (due to the blocking effect of the second stop 31, the first stop 29 cannot continue to rotate in the forward direction). At the same time, the first stop 29 engages with the limiting rack 26. Through the cooperation of the first stop 29, the limiting rack 26, the second stop 31 and the limiting body 32, the free end of the first cylinder 6 can only extend, but cannot retract.

[0057] Before the test begins, the free end of the first cylinder 6 is firmly locked in its current position, preventing it from contracting. When the pressure plate 16 applies downward pressure to the specimen, the free end of the first cylinder 6 remains stable, providing a stable support reference for the specimen. This avoids the free end of the first cylinder 6 contracting due to various factors during the downward pressure strength test, thus affecting the test data of the device.

[0058] After the test is completed, the pressure plate 16 is raised and reset by the control program. The stabilizing rod 21 will rotate relative to the first stop 29. At the same time, the torsion spring 28 stores force and controls the free end of the first cylinder 6 to extend so that the two electric clamps 3 move away from each other to reset. It should be noted that when the free end of the first cylinder 6 extends, the first stop 29 is no longer restrained. The torsion spring 28 releases force to drive the rotating block 27 and the first stop 29 to rotate in the opposite direction to reset.

[0059] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention according to the specific circumstances.

[0061] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A kind of house steel structure connecting piece strength detection device, including detection platform cabinet body (1) and hydraulic element, it is characterized in that, The top of the detection cabinet body (1) is slidably connected with two electric clamps (3); the detection cabinet body (1) is fixedly connected with a first cylinder body (6), the free end of the first cylinder body (6) is hingedly connected with two connecting rods (7), the other end of the connecting rod (7) is hingedly connected with a top abutting part (8), the bottom of the electric clamp (3) extends into the detection cabinet body (1) and is fixedly provided with a sliding rail (5), the outer surface of the top abutting part (8) is in sliding fit with the inner wall of the sliding rail (5); The side walls of the two sliding rails (5) away from each other are slidably connected with a guide rod (9) penetrating through, the end of the guide rod (9) extending into the sliding rail (5) is detachably connected with a pressure bearing part, the side of the top abutting part (8) close to the pressure bearing part is provided with a pressure sensor (11), the sliding rail (5) is provided with an elastic member (12) on the side away from the top abutting part (8) of the pressure bearing part; Further comprising a warning light (13) and a sensing assembly, the sensing assembly is used for detecting the movement state of the guide rod (9), and the sensing assembly is electrically connected with the warning light (13); Further comprising a stabilizing plate (14), a pressing plate (16) is fixedly connected with the stabilizing plate (14), at least two stabilizing rods (21) are arranged between the detection cabinet body (1) and the upper cover (2), at least two guide rings (22) are fixedly connected with the stabilizing plate (14), and the stabilizing rods (21) and the guide rings (22) are slidably connected; one of the stabilizing rods (21) is rotatably connected with the top wall of the detection cabinet body (1), and a sliding groove is arranged on the section of the stabilizing rod (21) above the detection cabinet body (1); the sliding groove is composed of a spiral groove (23) and a straight groove (24), the bottom end of the spiral groove (23) is in communication with the top end of the straight groove (24) inside, and the guide ring (22) is provided with a ball inside; the spiral groove (23) and the straight groove (24) are in sliding fit with the ball.

2. The device for detecting the strength of a connecting piece of a steel structure of a building according to claim 1, wherein Further comprising the upper cover (2) arranged on the top of the detection cabinet body (1), a hydraulic element is arranged on the upper cover (2), and the hydraulic element comprises a second cylinder body (15), and the bottom of the second cylinder body (15) is provided with a pressing plate (16).

3. The device for detecting the strength of a connecting piece of a steel structure of a building according to claim 2, wherein The two electric clamps (3) are oppositely arranged, and the center of the space between the two is located directly below the pressing plate (16), an optical sensor (4) is arranged on the electric clamp (3), and the electric clamp (3) and the first cylinder body (6) are electrically connected with the optical sensor (4).

4. The device for detecting the strength of a connecting piece of a steel structure of a building according to claim 1, wherein The bottom of the electric clamp (3) is provided with a guide member (17), the top of the detection cabinet body (1) is provided with a guide groove (18) matched with the guide member (17), and the arrangement direction of the guide groove (18) is perpendicular to the movement direction of the free end of the second cylinder body (15).

5. The device for detecting the strength of a connecting piece of a steel structure of a building according to claim 1, wherein The sensing assembly comprises a first electrode (19) arranged on the guide rod (9), the sliding rail (5) is fixedly connected with a second electrode (20) matched with the first electrode (19), the second electrode (20) is electrically connected with the warning light (13), and the first electrode (19) corresponds to the second electrode (20) when the guide rod (9) extends out of the sliding rail (5) to move.

6. The device for detecting the strength of a connecting piece of a steel structure of a building according to claim 1, wherein The free end of the first cylinder (6) is fixedly connected with a rotating support (25), and the end portions of the two connecting rods (7) are hingedly connected with the rotating support (25); one side of the rotating support (25) is fixedly connected with a limiting rack (26), and the cross section of the tooth portion of the limiting rack (26) is a right triangle.

7. The device for detecting the strength of a connecting piece of a steel structure of a building according to claim 6, wherein A rotating block (27) is rotatably connected to the stabilizing rod (21) in the inside of the detection bench cabinet (1), a torsion spring (28) is installed on the stabilizing rod (21) between the rotating block (27) and the inner top wall of the detection bench cabinet (1), a first stop portion (29) and a limiting body (32) are fixedly arranged on the rotating block (27), and the limiting rack (26) is matched with the first stop portion (29); a second stop portion (31) matched with the limiting body (32) is arranged on the inner top wall of the detection bench cabinet (1).

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