Steel structure prestress detection device

Abstract

The utility model relates to the technical field of steel structure prestress, and disclose a kind of steel structure prestress detection device, the bottom of support assembly is equipped with pulley assembly, pulley assembly is equipped with four groups, and symmetrically set, the top of support assembly is equipped with lifting assembly, the inside top of support assembly is equipped with bottom lock ring assembly, the top of bottom lock ring assembly is equipped with top lock ring assembly correspondingly, top lock ring assembly is installed in the bottom of quick release plate assembly, the bottom of lifting assembly is equipped with quick release plate assembly with limit installation.The utility model is equipped with top lock ring assembly on device, can make when using this device, the steel structure to be detected can be placed quickly by the top lock ring assembly set, at the same time, through the structure setting, realize the effect that pressure causes more and more fastening in the process of pressure, avoid the situation that material falls off, so that the device can be used, place material more convenient.

Description

Technical Field

[0001] This utility model relates to the field of steel structure prestressing technology, specifically a steel structure prestressing detection device. Background Technology

[0002] Steel structures, due to their high strength, large span, and excellent seismic performance, are widely used in construction engineering, bridge engineering, and machinery manufacturing. Their construction quality and structural safety directly affect the overall reliability of the project. Prestressing, as a key step in strengthening steel structures, effectively improves the structural load-bearing capacity, reduces deformation, and extends service life by applying stress in advance. However, the construction process is easily affected by material properties, construction techniques, and environmental factors, leading to deviations between the actual prestress value and the design value. If the deviation exceeds the allowable range, it may cause structural cracking, instability, or even collapse, posing safety hazards. Therefore, prestressing testing of steel structures is one of the core aspects of project quality control. Currently, existing prestress testing technologies mainly include stress wave method, strain gauge measurement method, and magnetoelastic method. Among them, stress wave method has high testing efficiency but its accuracy is easily affected by the structural dimensions. Strain gauge measurement method has high accuracy but is complex to install and is easily affected by environmental interference. Magnetoelastic method is suitable for steel structures of specific materials but the equipment cost is high. Overall, there are problems such as difficulty in balancing testing accuracy and efficiency, limited applicable scenarios, and insufficient ease of operation. These technologies cannot fully meet the needs of modern engineering for rapid, accurate, and non-destructive testing of prestress in steel structures. There is an urgent need to develop a steel structure prestress testing device with better performance to make up for the shortcomings of existing technologies.

[0003] Application number CN202422847576.3 discloses a prestressing testing device for steel structures, belonging to the field of steel structure testing technology. It includes a testing frame with a movable plate at its bottom. Electric telescopic rods are installed at the four corners of the movable plate, and the other ends of the four sets of electric telescopic rods are fixedly connected to the bottom of the testing frame. A bidirectional motor is installed at the top of the movable plate, with drive rods installed on both sides of the motor. A testing mechanism is threadedly connected to the outside of both sets of drive rods. The testing mechanism includes a testing plate and a mounting plate, with both sides of the testing plate fixedly connected to the mounting plate. Movable grooves are provided inside both sets of mounting plates. This application allows for more convenient prestressing testing of steel structures of different specifications, providing accurate test results. The installation and disassembly of the steel structure under test are also convenient, greatly improving the testing range and efficiency. However, a drawback is that the device is inconvenient to fix during the installation of the steel structure. Furthermore, during pressure application, the pressure may cause the locking fasteners to break, resulting in material detachment and further risks. Utility Model Content

[0004] The purpose of this utility model is to provide a steel structure prestress detection device, which solves the problem that the device is inconvenient to fix during the installation and placement of steel structures, and that the pressure may cause the locking fasteners to break and the material to fall off during the pressure process, which may further create a risk.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a steel structure prestress detection device, including a support assembly. A pulley assembly is installed at the bottom of the support assembly. There are four sets of pulley assemblies, which are symmetrically arranged. A lifting assembly is installed at the top of the support assembly. A bottom locking ring assembly is installed on the inner top of the support assembly. A top locking ring assembly is correspondingly provided at the top of the bottom locking ring assembly. The top locking ring assembly is installed at the bottom of the quick-release plate assembly. A quick-release plate assembly is installed at the bottom limit of the lifting assembly. The top locking ring assembly includes a circular base, which is installed at the bottom of the mounting bracket. A limiting side plate is formed on the bottom circumference of the circular base. A limiting shaft is rotatably provided between two limiting side plates. A pressing base plate is fixedly installed on the inner side of the limiting shaft. A clamping arc plate is installed on the outer side of the limiting shaft. Several clamping arc plates are circular in shape, and a circular tube is correspondingly provided on the inner side of several clamping arc plates. Several pressing base plates are disc-shaped, and a circular tube is pressed on the outer side of several pressing base plates.

[0006] Furthermore, the bracket assembly includes a mounting base plate, with protective side plates mounted on both sides of the top of the mounting base plate, and a mounting top plate mounted on the top of the two protective side plates. Sliding grooves are provided on both sides of the mounting top plate.

[0007] Furthermore, the pulley assembly includes a mounting plate, on which a movable pulley is mounted by means of a locking element, and the mounting plate is positioned at the bottom of the mounting base plate.

[0008] Furthermore, the bottom locking ring assembly includes a buffer base, a locking half-ring is installed on the top of the buffer base, the buffer base is installed in the middle top of the mounting base plate, and the outer wall of the locking half-ring is provided with a return opening and closing half-ring for limiting sliding.

[0009] Furthermore, the locking half-ring is fixedly installed on one side of the top circumference of the buffer base, and the return opening and closing half-ring is slidably disposed on the outer wall of the locking half-ring by a spring.

[0010] Furthermore, the lifting assembly includes a hydraulic cylinder, which is mounted on the top center of the mounting plate via a bracket, and the output end of the hydraulic cylinder is provided with an assembly limit block.

[0011] Furthermore, the quick-release plate assembly includes a lifting plate, the top of which is equipped with a convenient assembly slot, and an assembly limiting block is provided inside the convenient assembly slot. Limiting slide rods are installed on both sides of the top of the lifting plate, and the limiting slide rods are slidably disposed inside the slot, with the top of the limiting slide rods sliding through the mounting top plate.

[0012] Furthermore, the mounting bracket is fixedly installed at the bottom of the lifting plate.

[0013] This utility model has the following beneficial effects: (1) By installing a top locking ring assembly on the device, the steel structure to be tested can be quickly assembled and placed when using the device. At the same time, during the pressure process, the structure is designed to make the pressure more secure, preventing the material from falling off. This makes it more convenient to place materials when using the device.

[0014] (2) By installing a bottom locking ring assembly at the bottom of the device, the bottom of the device can be conveniently placed and locked when placing steel structures, making the device very convenient to position.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a schematic diagram of the bottom structure of the device; Figure 3 This is a schematic diagram of the top locking ring assembly in the device; Figure 4 This is a schematic diagram of the disassembled structure of the top locking ring assembly in the device; Figure 5 This is a schematic diagram of the bottom locking ring assembly in the device; Figure 6 This is a schematic diagram of the lifting assembly and quick-release plate assembly in the device; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Pulley assembly; 2. Bottom locking ring assembly; 3. Bracket assembly; 4. Lifting assembly; 5. Quick-release plate assembly; 6. Top locking ring assembly; 101. Mounting clamp; 102. Locking element; 103. Moving pulley; 201. Buffer base; 202. Locking half-ring; 203. Return opening and closing half-ring; 301. Mounting base plate; 302. Protective side plate; 303. Mounting top plate; 401. Hydraulic cylinder; 402. Assembly limit block; 501. Lifting plate; 502. Convenient assembly slot; 503. Limiting slide bar; 601. Circular ring base; 602. Mounting support; 603. Limiting side plate; 604. Limiting pivot; 605. Clamping arc plate; 606. Pressing base plate; 3031. Slide slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0019] Please see Figures 1-6 As shown, this utility model is a steel structure prestress detection device, including a support assembly 3, a pulley assembly 1 installed at the bottom of the support assembly 3, four sets of pulley assemblies 1 are provided and symmetrically arranged, a lifting assembly 4 is installed at the top of the support assembly 3, a bottom locking ring assembly 2 is installed on the inner top of the support assembly 3, a top locking ring assembly 6 is correspondingly provided at the top of the bottom locking ring assembly 2, the top locking ring assembly 6 is installed at the bottom of the quick-release plate assembly 5, and the quick-release plate assembly 5 is installed at the bottom limit of the lifting assembly 4; The top locking ring assembly 6 includes a circular base 601, which is installed at the bottom of the mounting support 602. A limiting side plate 603 is provided on the bottom circumference of the circular base 601. A limiting shaft 604 is rotatably provided between the two limiting side plates 603. A pressing base plate 606 is fixedly installed on the inner side of the limiting shaft 604. A clamping arc plate 605 is installed on the outer side of the limiting shaft 604. Several clamping arc plates 605 are circular in shape, and a circular tube is provided on the inner side of several clamping arc plates 605. Several pressing base plates 606 are disc in shape, and a circular tube is pressed on the outer side of several pressing base plates 606.

[0020] By installing the top locking ring assembly 6 on the device, the steel structure to be inspected can be quickly assembled and placed when using the device. At the same time, during the pressure process, the structure is designed to tighten the structure under pressure, preventing the material from falling off. This makes it more convenient and easier to place materials when using the device.

[0021] The bracket assembly 3 includes a mounting base plate 301, with protective side plates 302 installed on both sides of the top of the mounting base plate 301, and a mounting top plate 303 installed on the top of the protective side plates 302. The mounting top plate 303 has sliding grooves 3031 on both sides. The bracket assembly 3 serves as a basic support and includes the mounting base plate 301, protective side plates 302, and mounting top plate 303. The sliding grooves 3031 of the mounting top plate 303 allow the limiting slide rod 503 to slide, ensuring the stability of the device structure and guiding the movement of components.

[0022] The pulley assembly 1 includes a mounting clamp 101. The mounting clamp 101 is limited by a locking member 102 to mount a movable pulley 103. The mounting clamp 101 is located at the bottom of the mounting base plate 301. The pulley assembly 1 consists of four symmetrical sets mounted on the bottom of the mounting base plate 301. Each set includes a mounting clamp 101, a locking member 102, and a movable pulley 103. When the pushing device moves, the locking member 102 locks the movable pulley 103 to achieve positioning.

[0023] The bottom locking ring assembly 2 includes a buffer base 201, a locking half ring 202 is installed on the top of the buffer base 201, the buffer base 201 is installed in the middle top of the mounting base plate 301, and a return opening and closing half ring 203 is provided on the outer wall of the locking half ring 202 for limiting sliding. The locking half ring 202 is fixed to the buffer base 201, and the return opening and closing half ring 203 slides on its outer wall by means of a spring. When opening and closing, it clamps or releases the bottom of the round tube, and the buffer base 201 supports the round tube.

[0024] The locking half-ring 202 is fixedly installed on one side of the top circumference of the buffer base 201, and the return opening and closing half-ring 203 is slidably disposed on the outer wall of the locking half-ring 202 by a spring.

[0025] The lifting assembly 4 includes a hydraulic cylinder 401, which is mounted on the top center of the mounting plate 303 via a bracket. The output end of the hydraulic cylinder 401 is provided with an assembly limit block 402. The hydraulic cylinder 401 is mounted on the top of the mounting plate 303, and the assembly limit block 402 at the output end is connected to the convenient assembly slot 502 to drive the quick-release plate assembly 5 to lift and provide the power required for testing.

[0026] The quick-release plate assembly 5 includes a lifting plate 501. The top of the lifting plate 501 is equipped with a convenient assembly slot 502. An assembly limit block 402 is provided inside the convenient assembly slot 502. Limiting slide rods 503 are installed on both sides of the top of the lifting plate 501. The limiting slide rods 503 are slidably disposed inside the slide slot 3031. The top of the limiting slide rods 503 slides through the mounting top plate 303. The lifting plate 501 has a convenient assembly slot 502 and a limiting slide rod 503 at the top, which receive the power of the hydraulic cylinder 401 and drive the top locking ring assembly 6 to move. The limiting slide rods 503 ensure smooth lifting.

[0027] The mounting bracket 602 is fixedly installed at the bottom of the lifting plate 501. The mounting bracket 602 is connected to the lifting plate 501. The limiting side plate 603 under the circular base 601 allows the limiting rotating shaft 604 to rotate, which drives the clamping arc plate 605 and the pressing base plate 606 to clamp the top of the circular tube.

[0028] This steel structure prestress testing device achieves prestress testing of circular tube components in steel structures through the synergistic action of its various components. The overall structure is based on a support frame 3, with a pulley assembly 1 providing mobility to adapt to different testing scenarios. The core testing mechanism involves a lifting assembly 4 driving a quick-release plate assembly 5 to move up and down. This movement causes a top locking ring assembly 6, installed at the bottom of the quick-release plate assembly 5, to engage with a bottom locking ring assembly 2, installed on the inner top of the support frame 3. This clamps and limits the circular tube component, thus completing the prestress testing operation. The top locking ring assembly 6 contains several clamping arc plates 605 arranged in a ring shape for clamping and positioning the circular tube component from the outside, while a pressing bottom plate 606, arranged in a disc shape, abuts against the circular tube component from the inside. Next, the rotation of the limiting pivot 604 on the limiting side plate 603 can adapt to the clamping requirements of round tubes of different specifications. The locking half ring 202 in the bottom locking ring assembly 2 is fixed on the buffer base 201. The return opening and closing half ring 203 slides on the outer wall of the locking half ring 202 with the help of the spring to achieve the opening and closing fixation of the bottom of the round tube component. Together with the top locking ring assembly 6, it completes the stable limiting of the round tube. The output end of the hydraulic cylinder 401 of the lifting assembly 4 is limited and connected to the convenient assembly slot 502 of the quick release plate assembly 5 through the assembly limiting block 402. The lifting plate 501 drives the limiting slide rod 503 to slide in the sliding slot 3031 of the mounting top plate 303 of the bracket assembly 3, ensuring the stability of the lifting process and providing stable pressure or displacement conditions.The workflow begins with the movement and positioning of the device. Four sets of symmetrical pulley assemblies 1, installed on the bottom of the mounting base 301 of the support assembly 3, push the device to the position of the steel structure circular tube component to be tested. The locking element 102 is adjusted to lock the moving pulley 103, completing the positioning. Next, the bottom of the circular tube component is fixed. The bottom locking ring assembly 2 is operated to pull the return opening and closing half-ring 203, allowing it to slide on the outer wall of the locking half-ring 202. The bottom of the circular tube component to be tested is placed into the annular space formed by the locking half-ring 202 and the return opening and closing half-ring 203. The return opening and closing half-ring 203 is released, allowing it to reset under the action of the spring force, and cooperates with the locking half-ring 202 to clamp the bottom of the circular tube component. At this point, the circular tube component is... The bottom of the tube component is supported on the buffer base 201. Then, the quick-release plate assembly 5 and the lifting assembly 4 are assembled. Check that the convenient assembly slot 502 on the top of the lifting plate 501 of the quick-release plate assembly 5 is free of debris. Align the assembly limiting block 402 at the output end of the cylinder 401 of the lifting assembly 4 and insert it into the convenient assembly slot 502. At the same time, ensure that the limiting slide rods 503 on both sides of the top of the lifting plate 501 are embedded in the sliding slots 3031 of the mounting top plate 303. Then, the top locking ring assembly 6 clamps the round tube component, and the cylinder 401 is activated to extend its output end, pushing the lifting plate 501 downward along the mating direction of the limiting slide rods 503 and the sliding slots 3031. The top locking ring assembly 6, mounted on the bottom mounting support 602 of the lifting plate 501, moves downwards synchronously. When the clamping arc plate 605 of the top locking ring assembly 6 contacts the outer side of the top of the circular tube component, the lifting plate 501 continues to move downwards slowly. The clamping arc plate 605 is squeezed by the circular tube component, causing the limiting shaft 604 to rotate on the limiting side plate 603, so that several clamping arc plates 605 are tightly attached to the outer side of the circular tube component. At the same time, the pressing bottom plate 606 rotates with the limiting shaft 604 and abuts against the inner side of the circular tube component, completing the clamping and fixing of the top of the circular tube component. Then, the prestress testing operation is carried out. According to the testing requirements, the displacement or transmission of the lifting plate 501 is precisely controlled by the hydraulic cylinder 401. Applying pressure, the top locking ring assembly 6 and the bottom locking ring assembly 2 clamp the circular tube component to apply the force or displacement required for testing. With the assistance of external testing instruments, data such as stress and strain of the circular tube component are collected to complete the testing. After testing, the component is reset and removed. The output end of the control cylinder 401 retracts, causing the lifting plate 501 and the top locking ring assembly 6 to move upwards, allowing the clamping arc plate 605 and the pressing base plate 606 to disengage from the top constraint of the circular tube component. The return opening and closing half-ring 203 of the bottom locking ring assembly 2 is pulled again to release the bottom of the circular tube component and remove it. If other components need to be tested, the above steps are repeated. Once testing is complete, the pulley assembly 1 is locked again and the device is tidied up for future use.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A prestressing testing device for steel structures, comprising a support assembly (3), characterized in that: The bottom of the bracket assembly (3) is equipped with a pulley assembly (1), and there are four sets of pulley assemblies (1) arranged symmetrically. The top of the bracket assembly (3) is equipped with a lifting assembly (4), and the top of the inner side of the bracket assembly (3) is equipped with a bottom locking ring assembly (2). The top of the bottom locking ring assembly (2) is equipped with a top locking ring assembly (6), and the top locking ring assembly (6) is installed at the bottom of the quick-release plate assembly (5). The bottom limit of the lifting assembly (4) is equipped with the quick-release plate assembly (5). The top locking ring assembly (6) includes a circular base (601), which is installed at the bottom of the mounting bracket (602). A limiting side plate (603) is provided on the bottom circumference of the circular base (601). A limiting shaft (604) is rotatably provided between the two limiting side plates (603). A pressing base plate (606) is fixedly installed on the inner side of the limiting shaft (604). A clamping arc plate (605) is installed on the outer side of the limiting shaft (604). Several clamping arc plates (605) are circular in shape, and a circular tube is provided on the inner side of several clamping arc plates (605). Several pressing base plates (606) are disc in shape, and a circular tube is pressed on the outer side of several pressing base plates (606).

2. The steel structure prestress detection device according to claim 1, characterized in that: The bracket assembly (3) includes a mounting base plate (301), with protective side plates (302) installed on both sides of the top of the mounting base plate (301), and a mounting top plate (303) installed on the top of the protective side plates (302) on both sides. Sliding grooves (3031) are provided on both sides of the mounting top plate (303).

3. The steel structure prestress detection device according to claim 1, characterized in that: The pulley assembly (1) includes a mounting plate (101), on which a movable pulley (103) is mounted by a locking member (102), and the mounting plate (101) is positioned at the bottom of the mounting base plate (301).

4. The steel structure prestress detection device according to claim 1, characterized in that: The bottom locking ring assembly (2) includes a buffer base (201), and a locking half ring (202) is installed on the top of the buffer base (201). The buffer base (201) is installed on the middle top of the mounting base plate (301), and the outer wall of the locking half ring (202) is provided with a return opening and closing half ring (203) for limiting sliding.

5. A steel structure prestress detection device according to claim 4, characterized in that: The locking half-ring (202) is fixedly installed on one side of the top circumference of the buffer base (201), and the return opening and closing half-ring (203) is slidably disposed on the outer wall of the locking half-ring (202) by means of a spring.

6. The steel structure prestress detection device according to claim 1, characterized in that: The lifting assembly (4) includes a hydraulic cylinder (401), which is mounted on the top center of the mounting plate (303) via a bracket. The output end of the hydraulic cylinder (401) is provided with an assembly limit block (402).

7. The steel structure prestress detection device according to claim 1, characterized in that: The quick-release plate assembly (5) includes a lifting plate (501), the top of which is equipped with a convenient assembly slot (502), and an assembly limiting block (402) is provided inside the convenient assembly slot (502). Limiting slide rods (503) are installed on both sides of the top of the lifting plate (501). The limiting slide rods (503) are slidably disposed inside the sliding slot (3031), and the top of the limiting slide rods (503) slides through the mounting top plate (303).

8. The steel structure prestress detection device according to claim 1, characterized in that: The mounting bracket (602) is fixedly installed at the bottom of the lifting plate (501).

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