Building steel structure strength detection device

Abstract

The utility model discloses a building steel structure strength detection device, which relates to the field of steel structure strength detection, and comprises a device main body, the device main body comprises a main body support, support positioning mechanisms are arranged on two sides of the main body support, two telescopic seats are fixed on the front side of the main body support, and the front ends of the telescopic seats are slidably connected with an n-shaped support. A spring rod is fixed between the n-shaped support and the telescopic base, an overturning shaft is fixed to the rear end of the n-shaped support, an overturning mechanism is arranged on the overturning shaft, a grinding mechanism is arranged on a fixing plate on one side of the overturning mechanism, and a detection mechanism is arranged on a fixing plate on the other side of the overturning mechanism. The device has the beneficial effects that the grinding function and the detection function are integrated in the same device through the turnover mechanism and do not interfere with each other, so that complete operation of the functions is guaranteed, in addition, the supporting and positioning mechanism is arranged, it is guaranteed that the steel structure surface positions processed by the detection mechanism and the grinding mechanism are consistent, and the detection efficiency is improved. Therefore, the accuracy of the detection structure is ensured.

Description

A strength testing device for building steel structures Technical Field

[0001] This utility model relates to the field of steel structure strength testing, and in particular to a device for testing the strength of building steel structures. Background Technology

[0002] Strength testing of existing building steel structures is a complex and important task. Its purpose is to assess the load-bearing capacity, material properties, and structural safety of the steel structure. Generally, non-destructive testing methods (such as ultrasonic testing and magnetic particle testing) are used first to detect defects on the surface or inside of the steel structure. In this step, it is only necessary to press the flaw detector firmly against the surface of the steel structure to detect surface and internal defects. However, in some cases, such as when there is a coating or cement block layer containing ferromagnetic raw materials (such as coarse and fine aggregates, admixtures, or metal fibers) on the surface of the steel structure, these ferromagnetic raw materials can interfere with the instrument, leading to inaccurate or erroneous test results. In order to ensure the accuracy of the test results, it is necessary to remove the protective layer to avoid interference. Therefore, it is also necessary to bring additional grinding equipment to polish and grind the coating or cement block layer on the surface of the steel structure, exposing the surface of the steel structure to the external environment for testing. The overall process is cumbersome.

[0003] For example, patent document CN119688417A discloses a strength testing device for building steel structures, including a grip and a flaw detector pen. This device first uses a rotating frame and a limiting ring to control a polishing brush to polish a designated small area of ​​the coating on the surface of the building steel structure. Then, the flaw detector pen can be directly pushed outwards to be in close contact with the surface of the building steel structure for testing. It can also install a harder polishing disc on the limiting ring to polish the hardened cement layer on the surface of the building steel structure. Furthermore, a suction machine and suction holes on the limiting ring promptly remove the debris generated during polishing, achieving a smokeless and environmentally friendly construction effect. This solves the technical problem of excessive polishing and damage to the steel structure surface caused by directly using portable polishing equipment to polish the coating or hardened cement layer on the steel structure surface.

[0004] In the aforementioned device, after the steel structure surface is polished, the detection probe is then aligned with the detection area for inspection. However, due to the large amount of flying residue generated during the polishing process, this residue may impact the surface of the detection probe, causing damage to the probe or leaving residue on the surface, thus affecting subsequent inspections. Summary of the Invention

[0005] The purpose of this invention is to provide a strength testing device for building steel structures in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A steel structure strength testing device includes a main body, which includes a main support frame. Two supporting and positioning mechanisms are symmetrically arranged on both sides of the main support frame. Two symmetrically arranged telescopic seats are fixedly connected to the front of the main support frame. A U-shaped bracket is slidably connected to the front end of each telescopic seat. Several spring rods are fixedly connected between the U-shaped bracket and the telescopic seats. A flipping shaft is fixedly connected to the rear end of the U-shaped bracket. A motor is fixedly connected to the middle of the flipping shaft, and a drive gear is fixedly connected to the output end of the motor. A flipping mechanism is provided on the flipping shaft. The flipping mechanism includes a flipping bracket rotatably connected to the flipping shaft. Two symmetrically arranged fixed plates are rotatably connected inside the flipping bracket. A transmission shaft is rotatably connected to the fixed plates. A first gear is fixedly connected to the inner end of the transmission shaft, and the first gear can mesh with the drive gear. A second gear is fixedly connected to the outer end of the transmission shaft. A grinding mechanism is provided on one fixed plate, and a testing mechanism is provided on the other fixed plate. The two second gears provide power to the grinding mechanism and the testing mechanism, respectively.

[0008] Preferably, the support and positioning mechanism includes two meshing unfolding gears that are rotatably connected to the main support. A support rod is fixedly connected to one side of the unfolding gear, and a friction plate is hinged to the other end of the support rod. The friction plate can contact the surface of the steel structure. An unfolding knob is fixedly connected to one side of the unfolding gear via a shaft, and a ratchet limiting assembly is installed between the unfolding knob and the main support.

[0009] Preferably, the zig-shaped bracket is pinned to a limit pin, and the flip bracket has two symmetrically arranged limit holes, which can be engaged with the limit pin.

[0010] Preferably, the grinding mechanism includes a cleaning fixed shaft fixedly connected to a fixed plate, a cleaning bracket rotatably connected to the cleaning fixed shaft, a cleaning driven gear fixedly connected to one end of the inner side of the cleaning bracket, the cleaning driven gear meshing with a second gear, the other end of the cleaning bracket being U-shaped, a fixed bevel gear fixedly connected to the outer end of the cleaning fixed shaft, two symmetrically arranged driven bevel gears meshing on both sides of the fixed bevel gear, the driven bevel gears being rotatably connected to the U-shaped end of the cleaning bracket, and a mounting shaft fixedly connected to the other side of the driven bevel gear, on which a grinding wheel is fixedly connected.

[0011] Preferably, the detection mechanism includes a detection fixed shaft fixedly connected to a fixed plate, a rotating sleeve rotatably connected to the detection fixed shaft, a detection driven gear fixedly connected to one end of the inner side of the rotating sleeve, the detection driven gear meshing with a second gear, and a detection bracket fixedly connected to the other end of the rotating sleeve, on which a detection probe is mounted.

[0012] Preferably, a slider is slidably connected to the detection bracket, the slider is fixedly connected to the detection probe, a traction rope is fixedly connected between the slider and the detection fixed shaft, and a return spring is fixedly connected between the slider and the detection bracket.

[0013] The beneficial effects are as follows: the grinding and inspection functions are integrated into the same device through the flipping mechanism, and there is no interference between the grinding mechanism and the inspection mechanism, thus ensuring the proper operation of their respective functions. In addition, the setting of the support positioning mechanism ensures that the steel structure surface processed by the inspection mechanism and the grinding mechanism are in the same position, thereby ensuring the accuracy of the inspection structure.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 is a perspective view of a building steel structure strength testing device according to the present invention;

[0017] Figure 2 is a front view of the steel structure strength testing device of this utility model in conjunction with an I-beam;

[0018] Figure 3 is a lower sectional view of the building steel structure strength testing device of this utility model;

[0019] Figure 4 is a three-dimensional structural view of the main body of the building steel structure strength testing device of the present invention;

[0020] Figure 5 is a three-dimensional view of the support and positioning mechanism of the building steel structure strength testing device of the present invention.

[0021] Figure 6 is a three-dimensional view of the flipping mechanism of the building steel structure strength testing device of the present invention.

[0022] Figure 7 is a left-side sectional view of the flipping mechanism of the building steel structure strength testing device of the present invention;

[0023] Figure 8 is a three-dimensional view of the grinding mechanism of the building steel structure strength testing device of the present invention.

[0024] Figure 9 is a schematic diagram of the detection mechanism structure of the building steel structure strength testing device of this utility model;

[0025] Figure 10 is a sectional view along direction A in Figure 9.

[0026] The annotations in the attached figures are explained as follows:

[0027] 101. Main support frame; 102. Telescopic seat; 103. Z-shaped support frame; 104. Spring rod; 105. Flipping shaft; 106. Motor; 107. Limiting pin; 108. Drive gear; 201. Unfolding gear; 202. Support rod; 203. Friction plate; 204. Ratchet limiting assembly; 205. Unfolding knob; 301. Flipping bracket; 302. Limiting hole; 303. Fixing plate; 304. Transmission shaft; 305. 1. Gear; 306. Second gear; 401. Cleaning the fixed shaft; 402. Cleaning the bracket; 403. Cleaning the driven gear; 404. Fixed bevel gear; 405. Driven bevel gear; 406. Mounting shaft; 407. Grinding wheel; 501. Inspecting the fixed shaft; 502. Rotating sleeve; 503. Inspecting the driven gear; 504. Inspecting the bracket; 505. Slider; 506. Inspecting probe; 507. Return spring; 508. Traction rope. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] As shown in Figures 1-10, a steel structure strength testing device includes a main body, which includes a main support 101. Two supporting and positioning mechanisms are symmetrically arranged on both sides of the main support 101. Two symmetrically arranged telescopic seats 102 are welded to the front of the main support 101. A U-shaped bracket 103 is slidably connected to the front end of the two telescopic seats 102. Several spring rods 104 are fixedly connected between the U-shaped bracket 103 and the telescopic seats 102. A flipping shaft 105 is fixedly connected to the rear end of the U-shaped bracket 103. A motor 106 is bolted to the middle of the flipping shaft 105. A drive gear 108 is fixedly connected to the output end of the motor 106. A flipping mechanism is provided on the flipping shaft 105. The flipping mechanism includes a flipping bracket 301 rotatably connected to a flipping shaft 105. Two symmetrically arranged fixed plates 303 are rotatably connected inside the flipping bracket 301. A transmission shaft 304 is rotatably connected to the fixed plates 303. A first gear 305 is fixedly connected to the inner end of the transmission shaft 304, and the first gear 305 can mesh with a drive gear 108. A second gear 306 is fixedly connected to the outer end of the transmission shaft 304. A grinding mechanism is provided on one side of the fixed plate 303, and a detection mechanism is provided on the other side of the fixed plate 303. The two second gears 306 provide power to the grinding mechanism and the detection mechanism respectively. Most existing building steel structures are constructed by connecting and installing I-beams. Personnel placed the device near the target steel structure. Then, using a support and positioning mechanism, they fixed the main support 101 to the I-beam. Next, they rotated the flipping support 301, aligning the grinding mechanism with the I-beam surface. The motor 106 drove the drive gear 108, which in turn drove the first gear 305. The first gear 305 then rotated the transmission shaft 304, which in turn rotated the second gear 306. The second gear 306 then operated the grinding mechanism. Finally, the personnel pressed the U-shaped support 103 close to the I-beam surface. The U-shaped support 103 moved the flipping support 301, causing it to engage the grinding mechanism against the surface of the I-beam. The surface of the I-beam is cleaned, and after cleaning, the flipping bracket 301 is moved again to align the detection mechanism with the grinding area. The flipping shaft 105 drives the detection mechanism to rotate, and in conjunction with the movement of the I-beam bracket 103, the detection mechanism is brought into contact with the surface of the grinding area. This allows for the detection of different points within the same grinding area, improving the reliability of the detection structure. This device integrates the grinding and detection functions into the same device, and there is no interference between the grinding mechanism and the detection mechanism, thus ensuring the proper operation of their respective functions. In addition, the setting of the support positioning mechanism ensures that the positions of the steel structure surfaces processed by the detection mechanism and the grinding mechanism are consistent, thereby ensuring the accuracy of the detection structure.

[0032] The support and positioning mechanism includes two meshing unfolding gears 201 that are rotatably connected to the main support 101. A support rod 202 is fixedly connected to one side of the unfolding gear 201, and a friction plate 203 is hinged to the other end of the support rod 202. The friction plate 203 can contact the surface of the steel structure. An unfolding knob 205 is fixedly connected to one side of the unfolding gear 201 via a shaft. A ratchet limiting assembly 204 is installed between the unfolding knob 205 and the main support 101. When the operator rotates the unfolding knob 205, the unfolding knob 205 drives the unfolding gear 201 to rotate. The unfolding gear 201 drives the other unfolding gear 201 to rotate. The rotation of the unfolding gear 201 drives the support rod 202 to rotate. The support rod 202 drives the friction plate 203 to abut against the side of the I-beam. The ratchet limiting assembly 204 ensures that the unfolding gear 201 will not flip during the inspection process, causing the device to move.

[0033] The zig-shaped bracket 103 is pinned to a limit pin 107. The flip bracket 301 has two symmetrically arranged limit holes 302. The limit pin 107 can cooperate with the limit holes 302. The arrangement of the limit pin 107 and the limit holes 302 ensures that the flip bracket 301 can remain parallel to the zig-shaped bracket 103 after each rotation, and ensures that the flip bracket 301 will not rotate during inspection or grinding work.

[0034] The grinding mechanism includes a cleaning fixed shaft 401 fixedly connected to a fixed plate 303. A cleaning bracket 402 is rotatably connected to the cleaning fixed shaft 401. A cleaning driven gear 403 is fixedly connected to one end of the inner side of the cleaning bracket 402. The cleaning driven gear 403 meshes with a second gear 306. The other end of the cleaning bracket 402 is U-shaped. A fixed bevel gear 404 is fixedly connected to the outer end of the cleaning fixed shaft 401. Two symmetrically arranged driven bevel gears 405 mesh on both sides of the fixed bevel gear 404. The driven bevel gears 405 are rotatably connected to the U-shaped end of the cleaning bracket 402. A mounting shaft 40 is fixedly connected to the other side of the driven bevel gear 405. 6. A grinding wheel 407 is fixedly connected to the mounting shaft 406. The second gear 306 drives the cleaning driven gear 403 to rotate. The cleaning driven gear 403 drives the cleaning bracket 402 to rotate. The cleaning bracket 402 drives the driven bevel gear 405 to rotate. During the revolution, the driven bevel gear 405 meshes with the fixed bevel gear 404, so the driven bevel gear 405 can rotate on its own axis while revolving. The driven bevel gear 405 drives the mounting shaft 406 to rotate. The mounting shaft 406 drives the grinding wheel 407 to rotate. The grinding wheel 407 grinds the surface of the I-beam. The material of the grinding wheel 407 can be a fiber wheel or other material with a hardness less than steel.

[0035] The detection mechanism includes a detection fixed shaft 501 fixedly connected to a fixed plate 303. A rotating sleeve 502 is rotatably connected to the detection fixed shaft 501. A detection driven gear 503 is fixedly connected to one end of the rotating sleeve 502, and the detection driven gear 503 meshes with a second gear 306. A detection bracket 504 is fixedly connected to the other end of the rotating sleeve 502. A detection probe 506 is mounted on the detection bracket 504. A slider 505 is slidably connected to the detection bracket 504. The slider 505 is fixedly connected to the detection probe 506. A traction rope 508 is fixedly connected between the slider 505 and the detection fixed shaft 501. A reset spring 507 is fixedly connected between 4. The second gear 306 drives the detection driven gear 503 to rotate intermittently. The detection driven gear 503 drives the rotating sleeve 502 to rotate. The rotating sleeve 502 drives the detection bracket 504 to rotate. The detection bracket 504 drives the slider 505 to rotate. During the rotation of the slider 505, since the other end of the traction rope 508 is fixedly connected to the detection fixed shaft 501, the slider 505 drives the detection probe 506 to move towards the detection fixed shaft 501 during the rotation. At this time, the reset spring 507 is stretched. In this way, multiple points at different radial distances in the detection area can be sampled and detected.

[0036] Working principle:

[0037] S1: Most existing building steel structures are connected and installed using I-beams. The staff places the device near the target steel structure, and then rotates the unfolding knob 205. The unfolding knob 205 drives the unfolding gear 201 to rotate, which in turn drives another unfolding gear 201 to rotate. The rotation of the unfolding gear 201 drives the support rod 202 to rotate, and the support rod 202 drives the friction plate 203 to contact the side of the I-beam. The ratchet limiting component 204 ensures that the unfolding gear 201 will not flip during the testing process, causing the device to move, thus ensuring the accuracy of the test.

[0038] S2: Subsequently, the staff rotated the flipping bracket 301 to align the grinding mechanism with the surface of the I-beam, and fixed the position of the flipping bracket 301 with the limit pin 107. The motor 106 drove the drive gear 108 to rotate, the drive gear 108 drove the first gear 305 to rotate, the first gear 305 drove the transmission shaft 304 to rotate, the transmission shaft 304 drove the second gear 306 to rotate, the second gear 306 drove the cleaning driven gear 403 to rotate, the cleaning driven gear 403 drove the cleaning bracket 402 to rotate, the cleaning bracket 402 drove the driven bevel gear 405 to rotate. During the revolution, the driven bevel gear 405 meshed with the fixed bevel gear 404, so the driven bevel gear 405 could rotate on its own axis while revolving. The driven bevel gear 405 drove the mounting shaft 406 to rotate, the mounting shaft 406 drove the grinding wheel 407 to rotate, and the grinding wheel 407 ground the surface of the I-beam.

[0039] S3: After cleaning, rotate the flip bracket 301 again to align the detection mechanism with the polishing area. The second gear 306 drives the detection driven gear 503 to rotate intermittently. The detection driven gear 503 drives the rotating sleeve 502 to rotate, the rotating sleeve 502 drives the detection bracket 504 to rotate, and the detection bracket 504 drives the slider 505 to rotate. During the rotation of the slider 505, since the other end of the traction rope 508 is fixedly connected to the detection fixed shaft 501, the slider 505 drives the detection probe 506 to move towards the detection fixed shaft 501 during the rotation. At this time, the reset spring 507 is stretched. In this way, multiple points at different radial distances in the detection area can be sampled and detected.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A strength testing device for building steel structures, comprising a main body, characterized in that: The main body of the device includes a main support frame (101). Two supporting and positioning mechanisms are symmetrically arranged on both sides of the main support frame (101). Two symmetrically arranged telescopic seats (102) are fixedly connected to the front side of the main support frame (101). A zig-shaped support frame (103) is slidably connected to the front end of each of the two telescopic seats (102). Several spring rods (104) are fixedly connected between the zig-shaped support frame (103) and the telescopic seats (102). A flipping shaft (105) is fixedly connected to the rear end of each zig-shaped support frame (103). A motor (106) is fixedly connected to the middle of the flipping shaft (105). A drive gear (108) is fixedly connected to the output end of the motor (106). A flipping mechanism is provided on the flipping shaft (105). The mechanism includes a flipping bracket (301) rotatably connected to the flipping shaft (105). Two symmetrically arranged fixed plates (303) are rotatably connected inside the flipping bracket (301). A transmission shaft (304) is rotatably connected to the fixed plate (303). A first gear (305) is fixedly connected to the inner end of the transmission shaft (304). The first gear (305) can mesh with the driving gear (108). A second gear (306) is fixedly connected to the outer end of the transmission shaft (304). A grinding mechanism is provided on one side of the fixed plate (303), and a detection mechanism is provided on the other side of the fixed plate (303). The two second gears (306) are used to provide power to the grinding mechanism and the detection mechanism, respectively.

2. The strength testing device for building steel structures according to claim 1, characterized in that: The support and positioning mechanism includes two meshing unfolding gears (201) that are rotatably connected to the main support (101). A support rod (202) is fixedly connected to one side of the unfolding gear (201), and a friction plate (203) is hinged to the other end of the support rod (202). The friction plate (203) can contact the surface of the steel structure. An unfolding knob (205) is fixedly connected to one side of the unfolding gear (201) via a shaft. A ratchet limiting assembly (204) is installed between the unfolding knob (205) and the main support (101).

3. The strength testing device for building steel structures according to claim 1, characterized in that: The zig bracket (103) is pinned to a limiting pin (107), and the flip bracket (301) has two symmetrically arranged limiting holes (302), and the limiting pin (107) can cooperate with the limiting holes (302).

4. The strength testing device for building steel structures according to claim 1, characterized in that: The polishing mechanism includes a cleaning fixed shaft (401) fixedly connected to the fixed plate (303), a cleaning bracket (402) rotatably connected to the cleaning fixed shaft (401), a cleaning driven gear (403) fixedly connected to one end of the inner side of the cleaning bracket (402), the cleaning driven gear (403) meshing with the second gear (306), the other end of the cleaning bracket (402) being U-shaped, a fixed bevel gear (404) fixedly connected to the outer end of the cleaning fixed shaft (401), two symmetrically arranged driven bevel gears (405) meshing on both sides of the fixed bevel gear (404), the driven bevel gears (405) rotatably connected to the U-shaped end of the cleaning bracket (402), an installation shaft (406) fixedly connected to the other side of the driven bevel gears (405), and a polishing wheel (407) fixedly connected to the installation shaft (406).

5. The strength testing device for building steel structures according to claim 1, characterized in that: The detection mechanism includes a detection fixed shaft (501) fixedly connected to the fixed plate (303), a rotating sleeve (502) rotatably connected to the detection fixed shaft (501), a detection driven gear (503) fixedly connected to one end of the inner side of the rotating sleeve (502), the detection driven gear (503) meshing with the second gear (306), and a detection bracket (504) fixedly connected to the other end of the rotating sleeve (502), on which a detection probe (506) is installed.

6. The strength testing device for building steel structures according to claim 5, characterized in that: A slider (505) is slidably connected to the detection bracket (504). The slider (505) is fixedly connected to the detection probe (506). A traction rope (508) is fixedly connected between the slider (505) and the detection fixing shaft (501). A return spring (507) is fixedly connected between the slider (505) and the detection bracket (504).

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