A steel strength detection device for building detection

Abstract

The utility model discloses a kind of steel strength detection devices for building detection, it is related to steel detection technical field, including the workbench placed on ground, the workbench one side middle fixedly connected with support column, the support column upper end is fixedly connected with cylinder, and cylinder output end is fixedly connected with down block, and down block and workbench top middle alignment;The workbench top is fixedly connected with two symmetrical distribution's guide rail.This kind of steel strength detection device for building detection, by rotating first positive and negative toothed rod, it is realized that support platform is along guide rail Synchronous reverse movement, it is convenient to adjust support spacing, adapt to different span steel sample, the arched structure design of support platform bottom substantially enhances the deformation resistance, cooperate with load sharing type fixture system, while reducing structural load when guaranteeing clamping stability, avoid fatigue damage caused by fixture composite stress, and device overall is open structure, it is convenient to hoist and detect heavy steel.

Description

Technical Field

[0001] This utility model relates to the field of steel testing technology, specifically to a steel strength testing device for building inspection. Background Technology

[0002] A steel strength testing device is a specialized piece of equipment used to evaluate the mechanical properties of steel. It is widely used in fields such as construction, manufacturing, and aerospace to ensure the safety and reliability of materials.

[0003] To achieve the above functions, a prior art Chinese patent (publication number: CN222704447U) discloses a steel strength testing device, belonging to the technical field of strength testing equipment. It includes a base; a support frame is fixedly mounted on the base, a telescopic cylinder is fixedly mounted on the support frame, and a pressure block is fixedly mounted on the output shaft of the telescopic cylinder; a pad is fixedly mounted on the base, and two sets of support blocks are slidably connected to the pad; a double-threaded screw is rotatably connected to the support frame, and the double-threaded screw is threadedly engaged with the support blocks; a support wheel is rotatably connected to the support blocks, and the support wheel is used to support the steel; a limit component is rotatably connected to the support blocks for limiting the movement of the steel. The rotation of the double-threaded screw drives the two sets of support blocks to move towards or relative to each other, thereby adjusting the support spacing. Simultaneously, the double-threaded screw can also effectively fix the two support blocks, ensuring the stability of the support during testing. The limit component effectively prevents the steel from flying off during bending testing, improving the safety of the test.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: the fixed fixtures use uniform size specifications, which makes it difficult to adapt to steel samples with different cross-sectional dimensions, affecting the testing efficiency; the closed structure design hinders the hoisting operation of heavy steel samples, increasing the difficulty and safety risks of sample placement; the fixtures must provide clamping force while bearing the downward pressure of the steel sample, and the existing structure is prone to fatigue damage due to combined stress. Utility Model Content

[0005] The purpose of this utility model is to provide a steel strength testing device for building testing, in order to solve the problems in the background art where the fixed clamps use uniform size specifications, which are difficult to adapt to steel samples with different cross-sectional dimensions, affecting the testing efficiency, and the closed structure design hinders the hoisting operation of heavy steel samples, increasing the difficulty and safety risks of sample placement.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steel strength testing device for building inspection, comprising a workbench placed on the ground, a support column fixedly connected to the middle of one side of the workbench, a cylinder fixedly connected to the upper end of the support column, and a pressing block fixedly connected to the output end of the cylinder, and the pressing block being aligned with the middle of the top of the workbench.

[0007] The top of the workbench is fixedly connected to two symmetrically distributed guide rails, and symmetrically distributed sliders are slidably connected to the two guide rails. Each pair of sliders is fixedly connected to a support platform that is perpendicular to the guide rail. The bottom center of the support platform is fixedly connected to a first moving block, and each of the two first moving blocks is threaded with a first positive and negative threaded rod.

[0008] Preferably, two symmetrically distributed protective plates are fixedly connected to the top center of the workbench. The top of the protective plates is higher than the top of the first positive and negative threaded rods, and the protective plates are located on both sides of the first positive and negative threaded rods. The bottom of the support platform is set as an arched structure.

[0009] Preferably, two guide plates are fixedly connected to both sides of the top of the workbench, and a symmetrically distributed second moving block is slidably connected between each pair of guide plates. A second positive and negative threaded rod is rotatably connected between the two guide plates, and the second positive and negative threaded rod is threaded into the inside of the two second moving blocks.

[0010] Preferably, a clamping block is fixedly connected to the top of the second moving block, and the two clamping blocks are symmetrically distributed on the top of the guide plate, with anti-slip texture on the side of the two clamping blocks that are close to each other.

[0011] Preferably, a limiting ring is rotatably connected to the top of one of the two clamping blocks located on the same side, and an mounting sleeve is fixedly connected to the top of the other clamping block, the mounting sleeve being slidably connected inside the limiting ring.

[0012] Preferably, the mounting sleeve has a threaded hole inside, and a hand-tightening bolt is threadedly connected inside the mounting sleeve, with the upper end face of the hand-tightening bolt fitting against the top of the limiting ring.

[0013] Preferably, the first positive and negative threaded rod is fixedly connected to a bevel tooth at its end, and the first positive and negative threaded rod is connected to a transmission rod through the bevel tooth transmission; the second positive and negative threaded rod is fixedly connected to a bevel tooth at its end, and the second positive and negative threaded rod is connected to a synchronization rod through the bevel tooth transmission.

[0014] Preferably, the top and bottom of the workbench are fixedly connected to bearing seats, and the first positive and negative threaded rod, the second positive and negative threaded rod, the transmission rod and the synchronizing rod are all installed on the top and bottom of the workbench through the bearing seats, and the ends of the second positive and negative threaded rod and the transmission rod are fixedly connected to rotating handles.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This steel strength testing device for building inspection uses a rotating first positive and negative threaded rod to achieve synchronous reverse movement of the support platform along the guide rail, which facilitates adjustment of the support spacing and adapts to steel samples of different spans. The arched structure design at the bottom of the support platform greatly enhances the resistance to deformation. Combined with the split-load clamping system, the device reduces the structural load while ensuring clamping stability, avoiding fatigue damage caused by the combined stress of the clamps. Furthermore, the device has an open structure, which facilitates the hoisting and testing of heavy steel.

[0017] The locking design using a limiting ring, mounting sleeve, and hand-tightening bolts forms a closed structure, effectively locking the position of the clamping block and preventing the steel sample from popping out or tilting during pressurization. This further improves the stability and safety of the test, as well as the testing efficiency, accuracy, and durability of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the workbench structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the first positive and negative threaded screw structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping block structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the transmission rod structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the synchronizing rod structure of this utility model.

[0024] In the diagram: 1. Workbench; 2. Support column; 3. Cylinder; 4. Lowering block; 5. Guide rail; 6. Slider; 7. Support platform; 8. First moving block; 9. First positive and negative threaded rod; 10. Protective plate; 11. Guide plate; 12. Second positive and negative threaded rod; 13. Second moving block; 14. Clamping block; 15. Limiting ring; 16. Mounting sleeve; 17. Hand-tightening bolt; 18. Transmission rod; 19. Synchronizing rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1 - Figure 3 This utility model provides the following technical solution: a steel strength testing device for building inspection, comprising a workbench 1 placed on the ground, a support column 2 fixedly connected to the middle of one side of the workbench 1, a cylinder 3 fixedly connected to the upper end of the support column 2, and a pressing block 4 fixedly connected to the output end of the cylinder 3, with the pressing block 4 aligned with the middle of the top of the workbench 1; Figure 2 As shown, the top of the workbench 1 is fixedly connected to two symmetrically distributed guide rails 5, and symmetrically distributed sliders 6 are slidably connected to the two guide rails 5. The top of each pair of sliders 6 is fixedly connected to a support platform 7 that is perpendicular to the guide rail 5. The bottom center of the support platform 7 is fixedly connected to a first moving block 8, and the two first moving blocks 8 are threadedly connected to a first positive and negative threaded rod 9. The top center of the top of the workbench 1 is fixedly connected to two symmetrically distributed protective plates 10. The top of the protective plates 10 is higher than the top of the first positive and negative threaded rod 9, and the protective plates 10 are located on both sides of the first positive and negative threaded rod 9. The bottom of the support platform 7 is designed with an arched structure.

[0027] The operator places the steel sample on the workbench 1, adjusts the position of the support structure manually or by linkage, and then starts the cylinder 3 to apply downward pressure. The lower pressure block 4 applies concentrated force to the center line of the sample, causing the steel to bend and deform. At the same time, the pressure value of the cylinder and the deformation of the sample are recorded by the measurement system. These data are used to calculate the yield strength and bending strength.

[0028] First, place the steel horizontally on top of the workbench 1, ensuring that the length of the sample covers both support platforms 7 to ensure balanced support. The support platforms 7 are slidably connected to the guide rails 5 via the bottom sliders 6. The guide rails 5 are symmetrically fixed on both sides of the top of the workbench 1. The bottom of the support platforms 7 adopts an arched structure design to enhance its compressive rigidity and prevent deformation under high pressure from affecting the measurement accuracy.

[0029] When adjusting the support position, the operator manually rotates the first positive and negative threaded rod 9. The two ends of the first positive and negative threaded rod 9 are provided with threads in opposite directions, which are connected to the inside of the two first moving blocks 8 through the threads. When the first positive and negative threaded rod 9 rotates, the first moving blocks 8 at both ends move in opposite directions synchronously, driving the support platform 7 to slide along the guide rail 5 and change the spacing of the support platform 7. The middle section of the steel sample must be directly aligned with the lower pressure block 4. The lower pressure block 4 is fixed to the output end of the cylinder 3, and the cylinder 3 is installed on the top of the support column 2.

[0030] After cylinder 3 is activated, the piston rod pushes the lower pressure block 4 to press down vertically on the middle of the steel. During the pressure application process, the steel undergoes bending deformation due to continuous loading. The operator records the pressure value of cylinder 3 and the deformation of the steel in real time through the integrated measurement system.

[0031] The synchronous reverse movement mechanism of the first forward and reverse threaded rod 9 and the first moving block 8 ensures that the position of the support platform 7 changes uniformly, allowing the operator to adjust the spacing to achieve measurements under different spans, such as simulating different load distributions. After the measurement is completed, when the steel breaks, it is blocked by the protective plate 10 to avoid impacting the first forward and reverse threaded rod 9.

[0032] Example 2: Based on Example 1, please refer to... Figure 3 - Figure 6 and Figure 1 The following structure is also disclosed: two guide plates 11 are fixedly connected to both sides of the top of the workbench 1; symmetrically distributed second moving blocks 13 are slidably connected between each pair of guide plates 11; second positive and negative threaded rods 12 are rotatably connected between the two guide plates 11, and the second positive and negative threaded rods 12 are threaded into the interior of the two second moving blocks 13; Figure 4 As shown, a clamping block 14 is fixedly connected to the top of the second moving block 13, and the two clamping blocks 14 are symmetrically distributed on the top of the guide plate 11. The sides of the two clamping blocks 14 that are close to each other are provided with anti-slip textures. One of the two clamping blocks 14 located on the same side has a limit ring 15 rotatably connected to its top, and the other clamping block 14 has a mounting sleeve 16 fixedly connected to its top. The mounting sleeve 16 is slidably connected inside the limit ring 15. The mounting sleeve 16 has a threaded hole inside, and a hand-tightening bolt 17 is threadedly connected inside the mounting sleeve 16, with the upper end face of the hand-tightening bolt 17 abutting against the top of the limit ring 15. Figure 5 and Figure 6 As shown, the first positive and negative threaded rod 9 is fixedly connected to a bevel tooth at its end, and the first positive and negative threaded rod 9 is connected to a transmission rod 18 through the bevel tooth transmission. The second positive and negative threaded rod 12 is fixedly connected to a bevel tooth at its end, and the second positive and negative threaded rod 12 is connected to a synchronizing rod 19 through the bevel tooth transmission. Bearing seats are fixedly connected to the top and bottom of the worktable 1, and the first positive and negative threaded rod 9, the second positive and negative threaded rod 12, the transmission rod 18 and the synchronizing rod 19 are all installed on the top and bottom of the worktable 1 through the bearing seats. A rotating handle is fixedly connected to the end of the second positive and negative threaded rod 12 and the end of the transmission rod 18.

[0033] The operator uses the guide plate 11 for initial positioning. The guide plate 11 is fixed on both sides of the top of the workbench 1. A second positive and negative threaded rod 12 is set between each guide plate 11. The second positive and negative threaded rod 12 is rotatably connected between the guide plates 11 and threadedly connected inside the two second moving blocks 13. The second moving blocks 13 are slidably connected between the guide plates 11.

[0034] When the second positive and negative threaded screw 12 is rotated, since the two ends of the screw have reverse threads, the two second moving blocks 13 move synchronously in opposite directions under the constraint of the guide plate 11, causing the clamping blocks 14 at the top to slide towards or away from each other. The clamping blocks 14 are fixed on the top of the second moving blocks 13, and their sides that are close to each other are provided with anti-slip texture to increase the friction with the end of the steel and ensure that there is no slippage after clamping. The end of the first positive and negative threaded screw 9 is fixed with bevel teeth, which mesh with the bevel teeth of the transmission rod 18. Rotating the transmission rod 18 can drive the first positive and negative threaded screw 9 to rotate, thereby adjusting the spacing of the support platform 7. At the same time, the synchronizing rod 19 is connected to the second positive and negative threaded screw 12 through bevel teeth. When the transmission rod 18 moves, the synchronizing rod 19 links the two second positive and negative threaded screws 12 to rotate, so that the clamping blocks 14 automatically move to the position covering the two ends of the steel and always fix the center of the sample at the middle point.

[0035] After clamping and fixing the sample, the limiting ring 15 is rotatably connected to the top of one clamping block 14 on the same side, and the top of the other clamping block 14 is fixed with a mounting sleeve 16. The mounting sleeve 16 is slidably connected to the inside of the limiting ring 15. The mounting sleeve 16 has a threaded hole inside. The hand-tightening bolt 17 is screwed in, so that it is screwed into the threaded hole and presses down on the top of the limiting ring 15, generating friction to lock the relative position of the limiting ring 15 and the mounting sleeve 16, forming a closed structure that surrounds the top of the two clamping blocks 14, preventing the steel from popping out or tilting during the pressurization process, and enhancing the stability of the test.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel strength testing device for building inspection, comprising a workbench (1) placed on the ground, wherein a support column (2) is fixedly connected to the middle of one side of the workbench (1), a cylinder (3) is fixedly connected to the upper end of the support column (2), and a pressing block (4) is fixedly connected to the output end of the cylinder (3), and the pressing block (4) is aligned with the middle of the top of the workbench (1); Its features are: The workbench (1) has two symmetrically distributed guide rails (5) fixedly connected to its top. Sliding sliders (6) are symmetrically distributed on the two guide rails (5). Each pair of sliders (6) has a support platform (7) fixedly connected to its top, which is perpendicular to the guide rails (5). A first moving block (8) is fixedly connected to the bottom center of the support platform (7). Both first moving blocks (8) have a first positive and negative threaded rod (9) threaded inside them.

2. The steel strength testing device for building inspection according to claim 1, characterized in that: The workbench (1) has two symmetrically distributed protective plates (10) fixedly connected to the top center. The top of the protective plate (10) is higher than the top of the first positive and negative threaded rod (9), and the protective plate (10) is located on both sides of the first positive and negative threaded rod (9). The bottom of the support platform (7) is set as an arched structure.

3. The steel strength testing device for building inspection according to claim 2, characterized in that: Two guide plates (11) are fixedly connected to both sides of the top of the workbench (1). A second moving block (13) is symmetrically distributed between each two guide plates (11). A second positive and negative threaded rod (12) is rotatably connected between the two guide plates (11), and the second positive and negative threaded rod (12) is threaded into the two second moving blocks (13).

4. The steel strength testing device for building inspection according to claim 3, characterized in that: The second moving block (13) is fixedly connected to a clamping block (14) at its top, and the two clamping blocks (14) are symmetrically distributed on the top of the guide plate (11). The side of the two clamping blocks (14) that are close to each other is provided with anti-slip texture.

5. The steel strength testing device for building inspection according to claim 4, characterized in that: One of the two clamping blocks (14) located on the same side is rotatably connected to a limiting ring (15) at its top, and the other clamping block (14) is fixedly connected to an mounting sleeve (16) at its top, which is slidably connected inside the limiting ring (15).

6. The steel strength testing device for building inspection according to claim 5, characterized in that: The mounting sleeve (16) has a threaded hole inside, and a hand-tightening bolt (17) is threaded inside the mounting sleeve (16), with the upper end face of the hand-tightening bolt (17) fitting against the top of the limiting ring (15).

7. The steel strength testing device for building inspection according to claim 6, characterized in that: The first positive and negative threaded rod (9) is fixedly connected to a bevel tooth at its end, and the first positive and negative threaded rod (9) is connected to a transmission rod (18) through the bevel tooth transmission. The second positive and negative threaded rod (12) is fixedly connected to a bevel tooth at its end, and the second positive and negative threaded rod (12) is connected to a synchronizing rod (19) through the bevel tooth transmission.

8. The steel strength testing device for building inspection according to claim 7, characterized in that: The top and bottom of the workbench (1) are fixedly connected with bearing seats, and the first positive and negative threaded rod (9), the second positive and negative threaded rod (12), the transmission rod (18) and the synchronizing rod (19) are all installed on the top and bottom of the workbench (1) through bearing seats, and the ends of the second positive and negative threaded rod (12) and the transmission rod (18) are fixedly connected with rotating handles.

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