Steel box girder detection device and detection method

Abstract

The invention relates to the technical field of steel box girder detection device structures, in particular to a steel box girder detection device and method. Comprising a box body, a conveying structure, an environment simulation structure, a clamping transfer structure, a load loading structure and a displacement monitoring structure, and the conveying structure penetrates through the box body and is used for conveying a to-be-detected test body into the box body from the outside of the box body; the environment simulation structure comprises an environment simulation box arranged in the box body, and a temperature adjusting structure used for adjusting the use environment of the temperature simulation test body is arranged in the environment simulation box; the clamping transfer structure is arranged between the conveying structure and the environment simulation box; the load loading structure is located above the environment simulation box; the displacement monitoring structure is positioned in the environment simulation box and is used for recording the change displacement of the test body when a load is applied to the test body. The device is simple in structure and convenient to operate, can simulate the loading condition of the steel box girder in a real application scene, provides accurate analysis data for the design of the steel box girder, and facilitates the optimization design of the performance of the steel box girder.

Description

Technical Field

[0001] The invention relates to the technical field of steel box girder detection device structures, and in particular to a steel box girder detection device and a detection method. Background Art

[0002] Steel box girder, also known as steel plate box girder, is a common structural form for long-span bridges. It is generally used on bridges with large spans. It is called steel box girder because it looks like a box. Before the construction of steel box girder, the structure of steel box girder needs to be tested, because the different diaphragm spacing inside the steel box girder will affect the deformation of the steel box girder under the concentrated load. After the preliminary design is completed, the steel box girder specimens need to be tested to compare the rigid torsion effect of steel box girder specimens with different diaphragm spacing under concentrated force. By applying force to the top of the box girder web, the load decomposition method is used to calculate the four working conditions of distortion, rigid torsion, symmetrical bending and eccentric load, and analyze the structural strength of steel box girders with different structures, so as to ensure the safety performance of steel box girder. However, the detection of steel box girder is still mainly at the data simulation level, and the real entity detection is more limited, because the entity detection process needs to set different environmental conditions, and there is no similar device structure that can adjust the environmental conditions for the detection of steel box girder specimens. In addition, the testing of steel box girder specimens involves many aspects, such as the transportation and movement of the steel box girder specimens, the structure of the device for applying load to the steel box girder specimens, and the testing of the deformation of the steel box girder specimens under load. Currently, there is no related technology that discloses a similar technical solution. Summary of the invention

[0003] The purpose of this application is to solve the deficiencies of the above-mentioned background technology and to provide a steel box girder detection device and detection method.

[0004] The technical solution of the present application is: a steel box girder detection device, including a box body, and also including:

[0005] A conveying structure, which is arranged through the box body and is used to convey the test body to be tested from outside the box body to inside the box body;

[0006] An environmental simulation structure, the environmental simulation structure comprising an environmental simulation box disposed in the box body, wherein the environmental simulation box is provided with a temperature regulating structure for regulating the temperature to simulate the use environment of the specimen;

[0007] A clamping and transferring structure, which is disposed between the conveying structure and the environmental simulation box and is used to clamp the specimen conveyed to the box by the conveying structure and transfer it to the environmental simulation box;

[0008] A load loading structure, the load loading structure is located above the environmental simulation box and is used to load a vertical load on the specimen in the environmental simulation box;

[0009] The displacement monitoring structure is located in the environmental simulation box and is used to record the changing displacement of the specimen when a load is applied to the specimen.

[0010] According to a steel box girder detection device provided in the present application, the transmission structure includes:

[0011] A conveyor belt, one end of which is located outside the box body, and the other end of which passes through the box body in a horizontal transverse direction and extends into the inside of the box body, and rollers for driving the conveyor belt to move horizontally are arranged at both ends of the conveyor belt;

[0012] The connecting platform is a platform fixed on the conveyor belt and can move along the horizontal transverse direction with the conveyor belt. A plurality of fixing frames for supporting the specimen are arranged on the connecting platform.

[0013] According to a steel box girder detection device provided in the present application, the temperature adjustment structure includes a water inlet pipe and a water outlet pipe arranged on an environmental simulation box; the water inlet pipe is located on one side of the environmental simulation box and is used to inject hot water or cold water into the environmental simulation box to adjust the temperature inside the environmental simulation box; the water outlet pipe is located on the other side of the environmental simulation box and is used to discharge water from the environmental simulation box.

[0014] According to a steel box girder detection device provided in the present application, the clamping and transferring structure includes a clamping structure for clamping a test body and a transfer structure for transferring the test body; the transfer structure includes,

[0015] A rotating column, which is arranged vertically and is located between one end of the conveying structure extending into the box body and the environmental simulation box, and the lower end of the rotating column is driven by a driving motor to rotate around a vertical axis;

[0016] A rotating disk, which is a plate-shaped structure fixed on the rotating column and can rotate with the rotating column, and the rotating disk is suspended above one end of the conveying structure extending into the box body and above the environmental simulation box;

[0017] The clamping structure is vertically movably connected to the rotating disk.

[0018] According to a steel box girder detection device provided in the present application, the clamping structure includes:

[0019] A first telescopic rod, wherein the upper end of the first telescopic rod is vertically telescopically connected to the rotating disk, and the lower end of the first telescopic rod is provided with a first fixing plate;

[0020] Two groups of clamping plates are disposed on both sides of the first fixed plate and are driven by the screw rod structure on the first fixed plate to realize the movement towards and away from each other.

[0021] A steel box girder inspection device provided in the present application also includes a top plate arranged on the top of two groups of clamping plates and a bottom plate arranged on the bottom of the two groups of clamping plates; the inner sides of the top plate, the bottom plate and the clamping plates are provided with air bags that are inflated when clamping the specimen and deflated when loosening the specimen.

[0022] According to a steel box girder detection device provided in the present application, the load loading structure includes:

[0023] A second telescopic rod, wherein the upper end of the second telescopic rod is vertically telescopically connected to the rotating disk, and the lower end is provided with a sealing cover that can be covered on the top of the environmental simulation box to close the environmental simulation box;

[0024] A hydraulic cylinder, wherein the upper end of the hydraulic cylinder is connected to the lower end surface of the sealing cover, and the lower telescopic end is connected to a pressing block in contact with the upper end surface of the test body.

[0025] According to a steel box girder detection device provided in the present application, the displacement monitoring structure includes:

[0026] A second fixing plate, the second fixing plate is connected to the sealing cover in a horizontally and longitudinally movable manner through a screw structure; the upper end of the cylinder body of the hydraulic cylinder is fixed to the lower end surface of the second fixing plate;

[0027] A connecting frame, wherein the connecting frame is a U-shaped structure, the upper end of the connecting frame is fixedly connected to the cylinder body of the hydraulic cylinder, and the lower end is provided with a detection cylinder for recording the deformation amount of the specimen after the load is applied;

[0028] The detection cylinder includes a cylinder fixed at the lower end of the connecting frame and a detection column penetrating the cylinder; the upper end of the detection column contacts the lower end surface of the specimen when the specimen is loaded with a load, and the lower end passes through the top of the cylinder and extends into the interior of the cylinder; a rangefinder is arranged inside the cylinder to record the vertical displacement of the lower end of the detection column.

[0029] According to a steel box girder detection device provided in the present application, limit plates are arranged on both sides of the second fixed plate; a plurality of support seats are arranged in the environmental simulation box, and vertical side plates are arranged on the upper ends of the support seats; when the specimen is placed on the support seats, the limit plates are arranged on both sides of the longitudinal direction of the specimen together with the side plates.

[0030] The present application also provides a steel box girder detection method, which uses the above-mentioned steel box girder detection device for detection, and includes:

[0031] Place the test object to be tested on the conveying structure, and use the conveying structure to convey the test object into the box;

[0032] Transferring the specimen on the conveying structure to the environmental simulation box based on the clamping transfer structure;

[0033] The temperature regulating structure regulates the temperature in the environmental simulation box so that the environmental simulation box reaches the required temperature;

[0034] A load loading structure is used to apply a vertical load to the specimen in the environmental simulation box, and a displacement monitoring structure records the deformation of the specimen after the load is applied;

[0035] After completion, the clamping transfer structure transfers the specimen in the environmental simulation box to the conveying structure, and the conveying structure transfers the specimen out of the box;

[0036] Complete the testing of the specimen.

[0037] The advantages of the present application are as follows: 1. By constructing an environmental simulation box, the present application can adjust the temperature in the environmental simulation box to simulate the real application scenario of the steel box girder represented by the test specimen, and then conduct a loading test, which can accurately obtain the deformation of the steel box girder represented by the test specimen under real conditions, and provide more accurate data for the analysis of the steel box girder; the detection device of the present application has a simple structure, is easy to operate and use, can automatically perform detection tests on the steel box girder specimen, can automatically transfer, clamp, load and monitor the specimen to be tested, and the entire device can be fully automated for the specimen loading test, with extremely high test efficiency and extremely convenient operation;

[0038] 2. The conveying structure of the present application is very convenient to operate. You only need to place the test specimen on the connecting table on the conveyor belt, and then you can easily transfer the specimen to the inside of the box for subsequent operations, or transfer the completed test specimen out of the box, which greatly facilitates the operation of personnel;

[0039] 3. The temperature adjustment structure of the present application is very simple. By setting a water inlet pipe and a water outlet pipe, the temperature of the environmental simulation box can be conveniently controlled, and the temperature in the environmental simulation chamber can be quickly adjusted, which is easy to operate;

[0040] 4. The transfer structure of the present application can switch the specimens between different stations, and can transfer the specimens that have entered the box to the environmental simulation box, or take the specimens that have completed the experiment out of the environmental simulation box and transfer them to the transfer structure. The entire transfer process is switched by rotation, and the operation is very convenient and simple.

[0041] 5. The clamping structure of the present application is to clamp or loosen the specimen by moving two sets of clamping plates toward and away from each other. The driving of the clamping plates is achieved by a screw structure. The structure is simple, and the clamping and loosening methods are easy to achieve, which greatly facilitates the experiment.

[0042] 6. The present application sets an airbag in the clamping structure, which can further clamp the specimen, making it difficult for the specimen to shake. The airbag has a flexible contact with the specimen, and will not cause any clamping damage to the specimen, nor interfere with the test results.

[0043] 7. The load loading structure of the present application loads the specimen through the installed hydraulic cylinder. The loading method is very simple and can be accurately loaded according to the design experiment requirements, and the operation is convenient;

[0044] 8. The displacement monitoring structure of the present application reflects the deformation of the specimen by following the displacement of the detection column at the bottom of the specimen as the specimen deforms. The rangefinder can accurately collect the displacement of the detection column, thereby accurately obtaining the deformation of the specimen under load, and the measurement result is very accurate;

[0045] 9. The present application also provides a limit plate, which can correspond to the side plate to clamp and limit the specimen placed on the support seat to avoid movement of the specimen during the load loading process, making the specimen loading more stable;

[0046] 10. The present application also provides a detection method. The detection method of the present application is simple to operate, can accurately perform a real simulation test on a steel box girder specimen, and the entire detection method has a very high degree of automation.

[0047] The steel box girder detection device of the present application has a simple structure and is easy to operate. It can simulate the load loading conditions of the steel box girder in real application scenarios, provide accurate analysis data for the steel box girder design, and facilitate the optimization design of the steel box girder performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 : Schematic diagram of the structure of the steel box girder detection device of the present application;

[0049] Figure 2 : Schematic diagram of the clamping structure of the present application;

[0050] Figure 3 : Schematic diagram of the clamping structure of the present application clamping the specimen into the environmental simulation box;

[0051] Figure 4 : Schematic diagram of the load loading structure of this application;

[0052] Figure 5 : Side view of the load-loading structure of the present application;

[0053] Figure 6 :This application Figure 1 A part of the enlarged schematic diagram;

[0054] Figure 7 : A top view of the rotating disk of the present application;

[0055] Wherein: 1—box; 2—conveyor belt; 3—roller; 4—connecting platform; 5—fixed frame; 6—environmental simulation box; 7—water inlet pipe; 8—water outlet pipe; 9—rotating column; 10—driving motor; 11—rotating disk; 12—first telescopic rod; 13—first fixed plate; 14—clamping plate; 15—top plate; 16—bottom plate; 17—airbag; 18—second telescopic rod; 19—sealing cover; 20—hydraulic cylinder; 21—pressing block; 22—second fixed plate; 23—connecting frame; 24—cylinder; 25—detection column; 26—distance meter; 27—limiting plate; 28—support seat; 29—side plate; 30—third telescopic rod; 31—top cover; 32—spring. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0057] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] The present application relates to a steel box girder detection device. The detection device of the present application can simulate a corresponding test scenario according to the actual usage scenario of the steel box girder, place a to-be-tested body of the corresponding steel box girder structure in the test scenario, then apply a load to the to-be-tested body, and record the deformation of the body under the load. The experimenter can analyze the body based on the deformation, thereby optimizing the design of the performance of the steel box girder.

[0061] Specifically, Figures 1 to 7 A steel box girder detection device of the present application includes a box body 1, which is the outer shell of the entire detection device; it also includes a conveying structure, an environmental simulation structure, a clamping and transferring structure, a load loading structure and a displacement monitoring structure. The conveying structure is arranged in the box body 1 and is used to convey the test body to be detected from the outside of the box body 1 to the inside of the box body 1. The conveying structure facilitates the test body to enter the box body 1, and is also convenient for taking the test body out of the box body 1 after the experiment is completed; the environmental simulation structure includes an environmental simulation box 6 arranged in the box body 1, and the environmental simulation box 6 is provided with a temperature regulating structure for regulating the temperature of the simulated test body use environment. The temperature in the environmental simulation box 6 is changed by the temperature regulating structure so that the temperature in the environmental simulation box 6 reaches the temperature in the real application scenario of the simulated steel box girder. The data obtained from the experiment constructed in this way can more accurately reflect the real application situation of the steel box girder, which is convenient for the subsequent optimization design analysis of the steel box girder structure; the clamping and transferring structure is arranged between the conveying structure and the environmental simulation box 6, and is used to clamp the test body transmitted to the box body 1 on the conveying structure. The specimen is transferred from the conveying structure to the environmental simulation box 6 or from the environmental simulation box 6 to the conveying structure, and the clamping and transferring structure can be used to operate the specimen. That is, the specimen movement in the box 1 is completely completed based on the clamping and transferring structure, and the experimenter does not need to operate. The load loading structure is located above the environmental simulation box 6 and is used to load a vertical load on the specimen in the environmental simulation box 6. The load loading structure is located above the environmental simulation box 6 and applies a load vertically to the specimen in the environmental simulation box 6. The displacement monitoring structure is located in the environmental simulation box 6 and is used to record the changing displacement of the specimen when applying a load to the specimen. When the specimen is subjected to the load applied by the load loading structure, the specimen will deform, and the displacement monitoring structure will be able to record the deformation and displacement data of the specimen. Then, the steel box girder structure can be analyzed based on the size of the applied load and the deformation and displacement.

[0062] In actual application, you can follow the steps below:

[0063] The test body to be tested is placed on the conveying structure, and the conveying structure is used to convey the test body to the inside of the box 1; the test body on the conveying structure is transferred to the environmental simulation box 6 based on the clamping transfer structure; the temperature adjustment structure adjusts the temperature in the environmental simulation box 6 to make the environmental simulation box 6 reach the required temperature; the load loading structure is used to apply a vertical load to the test body in the environmental simulation box 6, and the displacement monitoring structure records the deformation of the test body after the load is applied; after completion, the clamping transfer structure transfers the test body in the environmental simulation box 6 to the conveying structure, and the conveying structure transfers the test body to the outside of the box 1; the test of the test body is completed.

[0064] In some embodiments of the present application, the present embodiment optimizes the above-mentioned transmission structure, specifically, Figure 1 As shown, the conveying structure of the present embodiment includes a conveyor belt 2 and a connecting platform 4. The conveying structure of the present embodiment is actually a belt conveying structure. One end of the conveyor belt 2 is located outside the box body 1, and the other end passes through the box body 1 in a horizontal transverse direction and extends into the interior of the box body 1. Rollers 3 for driving the conveyor belt 2 to move horizontally are arranged at both ends of the conveyor belt 2; one of the two rollers 3 can be a driving roller 3, and the other can be a driven roller 3. The conveyor belt 2 is driven to rotate on the roller 3 by the roller 3, so that the specimen can be put in and out of the box body 1.

[0065] The connecting platform 4 is a platform fixed on the conveyor belt 2 and can move along the horizontal direction with the conveyor belt 2. A plurality of fixing frames 5 for supporting the specimen are arranged on the connecting platform 4. The connecting platform 4 is a structure for conveniently placing the specimen, that is, the specimen of this embodiment is not placed directly on the conveyor belt 2, but is placed on the fixing frames 5 of the connecting platform 4. Figure 1 As shown, two fixing frames 5 are arranged on the connecting platform 4 of this embodiment. The two fixing frames 5 are arranged horizontally and spaced apart from each other. The specimen is placed on the upper ends of the two fixing frames 5 to facilitate the subsequent clamping of the specimen.

[0066] The connecting platform 4 only moves laterally on the upper end surface of the conveyor belt 2. The conveyor belt 2 has two workstations, one is the first workstation at one lateral end of the outer side of the box body 1, and the other is the second workstation at the other lateral end of the inner side of the box body 1. The conveyor belt 2 drives the connecting platform 4 to switch between the first workstation and the second workstation.

[0067] During application, the experimenter places the object to be tested on the connecting table 4 at the first station, and then drives the conveyor belt 2 to move horizontally through the roller 3, passing through the box 1 and entering the inside of the box 1, until the connecting table 4 is moved to the second station;

[0068] After the test piece is tested, the test piece is on the connecting table 4 on the second station, and the conveyor belt 2 is driven by the roller 3 to move horizontally, pass through the box 1 and return to the outside of the box 1 until the connecting table 4 is moved to the first station.

[0069] In other embodiments of the present application, the above-mentioned temperature adjustment structure is optimized. Specifically, Figure 1 and 3As shown, the temperature regulating structure includes a water inlet pipe 7 and a water outlet pipe 8 arranged on the environment simulation box 6. The water inlet pipe 7 is located on one side of the environment simulation box 6 and is used to inject hot water or cold water into the environment simulation box 6 to adjust the temperature in the environment simulation box 6. The water outlet pipe 8 is located on the other side of the environment simulation box 6 and is used to discharge the water in the environment simulation box 6. The water inlet pipe 7 and the water outlet pipe 8 are respectively arranged on both sides of the environment simulation box 6. On the opposite sides, the water inlet pipe 7 and the water outlet pipe 8 are arranged near the top of the environment simulation box 6. In actual application, it is not limited to this installation position, and other installation positions can also be used, as long as the purpose of temperature regulation can be achieved by discharging liquid into the environment simulation box 6.

[0070] When the temperature of the environmental simulation box 6 needs to be adjusted, liquid of set temperature can be directly discharged into the environmental simulation box 6 through the water inlet pipe 7, so that the liquid can fully penetrate the specimen in the environmental simulation box 6, and the specimen is placed in the set temperature environment to simulate the temperature environment of the steel box girder corresponding to the specimen in the actual use scenario.

[0071] In a further embodiment of the present application, this embodiment optimizes the above-mentioned clamping and transfer structure. The clamping and transfer structure of this embodiment involves two aspects of action, namely clamping and transfer. Therefore, the clamping and transfer structure of this embodiment includes a clamping structure for clamping the specimen and a transfer structure for transferring the specimen. The clamping structure can grasp and loosen the specimen, and the transfer structure can move the clamped specimen from one side to the other.

[0072] The transfer structure includes a rotating column 9 and a rotating disk 11. The rotating column 9 is arranged vertically and is located between the end of the conveying structure extending into the box body 1 and the environmental simulation box 6. The lower end of the rotating column 9 is driven by a driving motor 10 to rotate around a vertical axis; the rotating disk 11 is a plate-like structure fixed on the rotating column 9 and can rotate with the rotating column 9. The rotating disk 11 is suspended above the end of the conveying structure extending into the box body 1 and the environmental simulation box 6; the clamping structure is vertically movably connected to the rotating disk 11.

[0073] The clamping structure is installed on the rotating disk 11. Therefore, when the clamping structure clamps the specimen, it is equivalent to fixing the specimen on the rotating disk 11. Then, when the driving motor 10 drives the rotating column 9 to rotate, the specimen fixed on the rotating disk 11 will rotate to a suitable position with the rotating disk 11.

[0074] The clamping structure of this embodiment includes a first telescopic rod 12 and two groups of clamping plates 14. The upper end of the first telescopic rod 12 can be vertically telescopically connected to the rotating disk 11, and the lower end is provided with a first fixed plate 13; the two groups of clamping plates 14 are arranged on both sides of the first fixed plate 13, and are driven by the screw structure on the first fixed plate 13 to realize relative and opposite movement.

[0075] When in use, the two groups of clamping plates 14 are driven downward by the first telescopic rod 12 until the two groups of clamping plates 14 are placed on both sides of the specimen, and then the screw rod structure is adjusted to make the two groups of clamping plates 14 move toward each other until the two groups of clamping plates 14 clamp the two sides of the specimen to clamp the specimen, and the clamping operation of the specimen is completed at this time; when the specimen needs to be loosened, the two groups of clamping plates 14 are moved away from each other by adjusting the screw rod, and the two groups of clamping plates 14 are separated from the sides of the specimen to complete the separation of the specimen.

[0076] In order to further improve the stability of the specimen clamping, the clamping structure of this embodiment also includes a top plate 15 arranged on the top of the two groups of clamping plates 14 and a bottom plate 16 arranged on the bottom of the two groups of clamping plates 14. The top plate 15, the bottom plate 16 and the inner side of the clamping plate 14 are provided with air bags 17 that are inflated when clamping the specimen and deflated when loosening the specimen. The top plate 15 and the bottom plate 16 are plate-like structures extending toward the other side of the clamping plate 14 in the horizontal direction. The two groups of clamping plates 14, the two groups of top plates 15 and the two groups of bottom plates 16 surround and form a box-shaped cavity structure. The air bag 17 is arranged in this cavity structure. When clamping, the air bag 17 is in direct contact with the specimen. It is a flexible clamping structure and will not cause any form of damage to the specimen.

[0077] By setting the airbag 17, during the process of clamping the specimen, the screw structure drives the clamping plate 14 to surround the specimen in the formed cavity structure. The specimen is actually clamped by inflating the airbag 17 so that the squeezing effect generated by the expansion of the airbag 17 clamps the specimen.

[0078] In this embodiment, a slot structure is provided between the two top plates 15 and the two bottom plates 16, a boss is provided at the end of one fixed plate 15 facing the other top plate 15, and a corresponding slot is provided at the end of the other top plate 15, when the two clamping plates 14 move toward each other under the drive of the screw structure, the boss will be inserted into the slot to position and fix the two top plates 15. Similarly, the bottom plate 16 is also provided with a similar boss slot structure.

[0079] In some embodiments of the present application, the present embodiment optimizes the above-mentioned load loading structure, specifically, Figure 1 , 4 As shown in 5, the load loading structure includes a second telescopic rod 18 and a hydraulic cylinder 20. The upper end of the second telescopic rod 18 can be vertically telescopically connected to the rotating disk 11, and the lower end is provided with a sealing cover 19 that can be covered on the top of the environmental simulation box 6 to close the environmental simulation box 6; the upper end of the hydraulic cylinder 20 is connected to the lower end surface of the sealing cover 19, and the lower telescopic end is connected to a pressure block 21 that contacts the upper end surface of the specimen.

[0080] The environmental simulation box 6 of this embodiment is a box structure with an upper opening. The sealing cover 19 can be closed to the top opening of the environmental simulation box 6 under the action of the second telescopic rod 18, so that the environmental simulation box 6 forms a closed environment.

[0081] When it is necessary to load, the driving motor 10 drives the rotating column 9 to rotate, and the rotating disk 11 rotates along with the rotating column 9 until the second telescopic rod 18 and the sealing cover 19 on the rotating disk 11 rotate to the top of the environmental simulation box 6, and the second telescopic rod 18 drives the sealing cover 19 to move downward until the sealing cover 19 completely covers the top opening of the environmental simulation box 6; the hydraulic cylinder 20 is started to make the pressure block 21 contact the upper end of the specimen, and then the specimen is loaded according to the set load.

[0082] The rotating disk 11 of the present embodiment is a circular plate-like structure. The rotating disk 11 has three installation stations around the rotating column 9. The first installation station corresponds to the installation arrangement of the first telescopic rod 12. The first telescopic rod 12 corresponds to the first fixed plate 13, which is used to clamp and loosen the specimen; the second installation station corresponds to the second telescopic rod 18. The second telescopic rod 18 is equipped with a second fixed plate and a hydraulic cylinder 20, which are used to load the specimen with a vertical load; the third installation station corresponds to the third telescopic rod 30. The upper end of the third telescopic rod 30 is connected to the rotating disk 11, and the lower end can be telescopically moved vertically. The lower end of the third telescopic rod 30 is provided with a top cover 31. The top cover 31 can be closed to the upper end opening of the environmental simulation box 6 under the action of the third telescopic rod 30, so as to seal the environmental simulation box 6 and prevent the temperature inside the environmental simulation box 6 from radiating to the outside when simulating the ambient temperature, resulting in an increase in the required energy consumption. The first installation station of the present embodiment (corresponding to Figure 1 The first telescopic rod 12 in the second installation station (corresponding to Figure 1 The second telescopic rod 18 in the middle) and the third installation station (corresponding to Figure 1 The arrangement structure of the third telescopic rod 30) in Figure 7 As shown, the first installation station, the second installation station and the third installation station are distributed at intervals along the circumferential direction with the rotating column 9 as the center.

[0083] In a preferred embodiment of the present application, the present embodiment optimizes the above-mentioned displacement monitoring structure. Specifically, Figures 4 to 6As shown, the displacement monitoring structure of this embodiment includes a second fixed plate 22 and a connecting frame 23. The second fixed plate 22 is connected to the sealing cover 19 in a horizontal and longitudinally movable manner through a screw structure. The upper end of the cylinder body of the hydraulic cylinder 20 is fixed to the lower end surface of the second fixed plate 22; the connecting frame 23 is a U-shaped structure, the upper end of the connecting frame 23 is fixedly connected to the cylinder body of the hydraulic cylinder 20, and the lower end is provided with a detection cylinder for recording the deformation of the specimen after the load is applied; the detection cylinder includes a cylinder body 24 fixed to the lower end of the connecting frame 23 and a detection column 25 penetrating the cylinder body 24, the upper end of the detection column 25 contacts the lower end surface of the specimen when the load is applied to the specimen, and the lower end passes through the top of the cylinder body 24 and extends into the inside of the cylinder body 24, and a rangefinder 26 for recording the vertical displacement of the lower end of the detection column 25 is provided inside the cylinder body 24.

[0084] In this embodiment, the displacement deformation monitoring of the specimen under load is measured by measuring the vertical displacement of the lower end of the detection column 25. The lower end surface of the specimen is in contact with the detection column 25. When the specimen is displaced and deformed in the vertical direction, the detection column 25 is pushed downward, and the rangefinder 26 installed inside the cylinder 24 will monitor the vertical displacement change of the lower end of the detection column 25. The deformation of the specimen can be obtained through the displacement change, which is convenient for subsequent analysis operations.

[0085] In addition, in this embodiment, a spring 32 is provided at the lower end of the detection column 25, and a group of springs 32 are provided on both sides of the lower end of the detection column 25. The two groups of springs 32 support the detection column 25, and the springs 32 can reset the detection column 25. When the detection column 25 produces a downward displacement change due to the deformation of the specimen, after the experiment is completed and the specimen is separated, the detection column 25 can be restored to the initial position under the action of the spring 32, which is convenient for the next measurement. Moreover, the spring 32 can also make the detection column 25 in close contact with the lower end surface of the specimen, ensuring that the deformation of the specimen can be transmitted to the detection column 25, and no error will occur.

[0086] In order to improve the stability of the specimen during the load loading test, in this embodiment, limit plates 27 are arranged on both sides of the second fixed plate 22, and a plurality of support seats 28 are arranged in the environmental simulation box 6. Vertical side plates 29 are arranged on the upper ends of the support seats 28. When the specimen is placed on the support seats 28, the limit plates 27 and the side plates 29 are placed on both sides of the specimen in the longitudinal direction.

[0087] The environmental simulation box 6 of this embodiment is provided with two groups of support seats 28 arranged horizontally and spaced apart at intervals at the bottom. The two groups of support seats 28 are used to support the specimen so that the specimen is suspended in the environmental simulation box 6. Such arrangement of the specimen can, on the one hand, allow the specimen to be fully immersed in the temperature regulating liquid, and on the other hand, can facilitate the detection column 25 to enter the bottom of the specimen and contact the lower end surface of the specimen, that is, the hydraulic cylinder 20 and the detection column 25 can be conveniently moved to the upper and lower positions of the specimen in the longitudinal direction.

[0088] During the actual inspection of the steel box girder inspection of the present application, the experimenter places the object to be tested on the two fixing frames 5 on the connecting platform 4, so that the object to be tested is placed on the fixing frames 5 in a suspended state; the roller 3 drives the conveyor belt 2 to move, and the conveyor belt 2 drives the connecting platform 4 and the object to be tested on the connecting platform 4 to pass through the box body 1 horizontally and enter the inner side of the box body until the object to be tested moves to the second station in the box body 1; the driving motor 10 drives the rotating column 9 to rotate, so that the rotating disk 11 rotates, corresponding to the first telescopic rod 12 and the first telescopic rod 13 on the rotating disk 11. The fixing plate 13 rotates to the top of the object to be tested, and the first telescopic rod 12 extends downward, so that the clamping plates 14 are located on both sides of the horizontal longitudinal direction of the object to be tested; the two sets of clamping plates 14 are driven to move toward each other in the horizontal longitudinal direction by the screw structure on the first fixing plate 13 until the ends of the two sets of top plates 15 abut together, and the ends of the two sets of bottom plates 16 abut together. At this time, the specimen is located between the uninflated airbags 17, and the airbags 17 are inflated, and the airbags 17 expand until the specimen is completely wrapped and clamped; the driving motor 10 drives the rotating column 9 to rotate, so that the rotating disk 11 rotates, the first telescopic rod 12 and the first fixed plate 13 on the corresponding rotating disk 11 rotate to the top of the environmental simulation box 6, the first telescopic rod 12 extends downward, the clamping plate 14 with the specimen is placed in the environmental simulation box 6, so that the lateral ends of the specimen are respectively placed on the two support seats 28 at the bottom of the environmental simulation box 6, the airbag 17 is deflated, the specimen is loosened, and the specimen is completely placed on the two support seats 28, and the two sets of clamping plates 14 are driven to move in opposite directions by the screw structure, and are completely separated from the specimen in the horizontal longitudinal direction, and the first telescopic rod is extended downward. 12, the clamping plate 14 is moved out of the environmental simulation box 6; the driving motor 10 drives the rotating column 9 to rotate, so that the rotating disk 11 rotates, and the third telescopic rod 30 and the top cover 31 on the corresponding rotating disk 11 move to the top of the environmental simulation box 6, and the third telescopic rod 30 extends vertically downward, so that the top cover 31 covers the upper end opening of the environmental simulation box 6, so that the environmental simulation box 6 is in a closed state, and water is injected into the environmental simulation box 6 through the water inlet pipe 7 until water is discharged from the water outlet pipe 8, and the temperature in the environmental simulation box 6 is adjusted to reach the set temperature;The third telescopic rod 30 contracts upward, so that the top cover 31 is separated from the environmental simulation box 6, and the driving motor 10 drives the rotating column 9 to rotate, so that the rotating disk 11 rotates, and the second telescopic rod 18 and the sealing cover 19 on the corresponding rotating disk 11 move to the top of the environmental simulation box 6, and the second telescopic rod 18 extends downward to make the sealing cover 19 cover the opening of the environmental simulation box 6. The connecting frame 23 is driven by the screw structure to move horizontally and longitudinally, and the limiting plate 27 is attached to one longitudinal side of the specimen, and corresponds to the side plate 29 on the other longitudinal side of the specimen, so that the specimen is clamped and fixed between the limiting plate 27 and the side plate 29. The lower end of the specimen is supported by two sets of support seats 28. At this time, the hydraulic cylinder 20 on the connecting frame 23 is directly above the specimen, and the detection column 25 on the connecting frame 23 is directly below the specimen. The hydraulic cylinder 20 is started to extend downward until the telescopic end of the hydraulic cylinder 20 is completely pressed against the upper end surface of the specimen. The specimen is loaded according to the set load. The deformation of the specimen generates a downward thrust acting on the upper end of the detection column 25. The thrust overcomes the force of the spring 32 to squeeze the detection column 25 to move vertically downward. The rangefinder 26 records the value of the vertical displacement of the detection column 25 for subsequent detection and analysis.

[0089] After the load on the specimen is completed, the hydraulic cylinder 20 removes the load on the specimen, and under the action of the screw structure, drives the connecting frame 23 to move longitudinally until all the components on the connecting frame 23 are separated from the specimen, and under the action of the second telescopic rod 18, the sealing cover 19 and the connecting frame 23 are moved out of the environmental simulation box 6 along the vertical direction; the driving motor 10 drives the rotating column 9 to rotate, so that the rotating disk 11 rotates, and the first telescopic rod 12 and the first fixed plate 13 on the corresponding rotating disk 11 rotate to the top of the environmental simulation box 6, and the first telescopic rod 12 extends downward so that the clamping plate 14 is on both sides of the horizontal longitudinal direction of the specimen; the two groups of clamping plates 14 are driven by the screw structure on the first fixed plate 13 to move toward each other in the horizontal longitudinal direction until the ends of the two groups of top plates 15 are abutted together, and the ends of the two groups of bottom plates 16 are abutted together. At this time, the specimen is between the uninflated airbags 17, and the airbags 17 are inflated, and the airbags 17 expand until the specimen is completely Fully wrapped and clamped; under the action of the first telescopic rod 12, the clamping plate 14 clamps the specimen and moves it out of the environmental simulation box 6, and the driving motor 10 drives the rotating column 9 to rotate, so that the rotating disk 11 rotates, and the first telescopic rod 12 and the first fixed plate 13 on the corresponding rotating disk 11 rotate to the top of the connecting platform 4 on the conveyor belt 2, and the first telescopic rod 12 extends downward, and the clamping plate 14 with the specimen is placed on the two fixed frames 5 on the connecting platform 4, so that the lateral ends of the specimen are respectively placed on the two fixed frames 5, and the airbag 17 is deflated to loosen the specimen, so that the specimen is completely placed on the two fixed frames 5, and the two groups of clamping plates 14 are driven by the screw structure to move in opposite directions, and completely separated from the specimen in the horizontal longitudinal direction; the roller 3 drives the conveyor belt 2 to move, and the connecting platform 4 passes through the box body 1 under the action of the conveyor belt 2, and moves from the inside of the box body 1 to the outside of the box body 1, and the connecting platform 4 moves to the first station of the conveyor belt 2, which is convenient for the test personnel to take;

[0090] Complete the test specimen.

[0091] The horizontal direction of this application Figure 1 The left and right directions in this application refer to the longitudinal direction. Figure 1 The vertical direction of the paper in this application refers to Figure 1 The up and down directions in .

[0092] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A steel box girder detection device, comprising a box body (1), characterized in that: Also includes, A conveying structure, the conveying structure being arranged through the box (1) and being used for conveying the test body to be inspected from outside the box (1) to inside the box (1); An environmental simulation structure, the environmental simulation structure comprising an environmental simulation box (6) arranged in the box body (1), wherein the environmental simulation box (6) is provided with a temperature regulating structure for regulating the temperature to simulate the use environment of the specimen; A clamping and transferring structure, the clamping and transferring structure being arranged between the conveying structure and the environmental simulation box (6), and being used for clamping the specimen conveyed to the box body (1) by the conveying structure and transferring it to the environmental simulation box (6); A load loading structure, the load loading structure being located above the environmental simulation box (6) and being used to load a vertical load on a specimen in the environmental simulation box (6); A displacement monitoring structure is provided in the environmental simulation box (6) and is used for recording the displacement change of the specimen when a load is applied to the specimen.

2. A steel box girder detection device as claimed in claim 1, characterized in that: The transmission structure comprises: A conveyor belt (2), one end of the conveyor belt (2) being located outside the box body (1), and the other end of the conveyor belt (2) passing through the box body (1) in a horizontal transverse direction and extending into the interior of the box body (1), and rollers (3) for driving the conveyor belt (2) to move horizontally are arranged at both ends of the conveyor belt (2); The connecting platform (4) is a platform fixed on the conveyor belt (2) and can move along the horizontal transverse direction with the conveyor belt (2). The connecting platform (4) is provided with a plurality of fixing frames (5) for supporting the specimen.

3. A steel box girder detection device as claimed in claim 1, characterized in that: The temperature regulating structure comprises a water inlet pipe (7) and a water outlet pipe (8) which are arranged on the environmental simulation box (6); the water inlet pipe (7) is located on one side of the environmental simulation box (6) and is used to inject hot water or cold water into the environmental simulation box (6) to regulate the temperature in the environmental simulation box (6); the water outlet pipe (8) is located on the other side of the environmental simulation box (6) and is used to discharge water in the environmental simulation box (6).

4. A steel box girder detection device as claimed in claim 1, characterized in that: The clamping and transferring structure comprises a clamping structure for clamping the specimen and a transferring structure for transferring the specimen; the transferring structure comprises: A rotating column (9), the rotating column (9) is arranged vertically and is located between one end of the conveying structure extending into the box body (1) and the environmental simulation box (6), and the lower end of the rotating column (9) is driven by a driving motor (10) to rotate around a vertical axis; A rotating disk (11), wherein the rotating disk (11) is a plate-shaped structure fixed on the rotating column (9) and capable of rotating along with the rotating column (9), and the rotating disk (11) is suspended above one end of the conveying structure extending into the box body (1) and above the environmental simulation box (6); The clamping structure is vertically movably connected to the rotating disk (11).

5. A steel box girder detection device as claimed in claim 4, characterized in that: The clamping structure comprises: A first telescopic rod (12), the upper end of which is vertically telescopically connected to the rotating disk (11), and the lower end of which is provided with a first fixing plate (13); Two groups of clamping plates (14) are disposed on both sides of a first fixed plate (13) and are driven by a screw rod structure on the first fixed plate (13) to move toward and away from each other.

6. A steel box girder detection device as claimed in claim 5, characterized in that: The invention also comprises a top plate (15) arranged on the top of the two groups of clamping plates (14) and a bottom plate (16) arranged on the bottom of the two groups of clamping plates (14); the inner sides of the top plate (15), the bottom plate (16) and the clamping plates (14) are provided with air bags (17) which are inflated when clamping the specimen and deflated when releasing the specimen.

7. A steel box girder detection device as claimed in claim 5, characterized in that: The load loading structure comprises: a second telescopic rod (18), the upper end of which is vertically telescopically connected to the rotating disk (11), and the lower end of which is provided with a sealing cover (19) which can be covered on the top of the environmental simulation box (6) to seal the environmental simulation box (6); A hydraulic cylinder (20), wherein the upper end of the hydraulic cylinder (20) is connected to the lower end surface of the sealing cover (19), and the lower telescopic end is connected to a pressing block (21) in contact with the upper end surface of the specimen.

8. A steel box girder detection device as claimed in claim 7, characterized in that: The displacement monitoring structure comprises: A second fixing plate (22), the second fixing plate (22) being connected to the sealing cover (19) in a horizontally and longitudinally movable manner via a screw rod structure; the upper end of the cylinder body of the hydraulic cylinder (20) is fixed to the lower end surface of the second fixing plate (22); A connecting frame (23), wherein the connecting frame (23) is a U-shaped structure, the upper end of the connecting frame (23) is fixedly connected to the cylinder body of the hydraulic cylinder (20), and the lower end is provided with a detection cylinder for recording the deformation amount of the specimen after the load is applied; The detection cylinder comprises a cylinder body (24) fixed at the lower end of a connecting frame (23) and a detection column (25) penetrating the cylinder body (24); the upper end of the detection column (25) contacts the lower end surface of the specimen when a load is applied to the specimen, and the lower end passes through the top of the cylinder body (24) and extends into the interior of the cylinder body (24); a distance meter (26) for recording the vertical displacement of the lower end of the detection column (25) is arranged inside the cylinder body (24).

9. A steel box girder detection device as claimed in claim 8, characterized in that: Limiting plates (27) are arranged on both sides of the second fixing plate (22); a plurality of supporting seats (28) are arranged in the environmental simulation box (6), and vertical side plates (29) are arranged on the upper ends of the supporting seats (28); when the specimen is placed on the supporting seats (28), the limiting plates (27) and the side plates (29) are arranged on both sides of the specimen in the longitudinal direction.

10. A method for detecting a steel box girder, characterized in that: The detection method uses a steel box girder detection device as described in any one of claims 1 to 9 to perform detection, including: Placing the test body to be tested on the conveying structure, and using the conveying structure to convey the test body to the inside of the box (1); Transferring the specimen on the conveying structure to the environmental simulation box (6) based on the clamping transfer structure; The temperature regulating structure regulates the temperature in the environmental simulation box (6) so that the environmental simulation box (6) reaches a desired temperature; A load loading structure is used to apply a vertical load to a specimen in an environmental simulation box (6), and a displacement monitoring structure records the deformation of the specimen after the load is applied; After completion, the clamping transfer structure transfers the specimen in the environmental simulation box (6) to the conveying structure, and the conveying structure transfers the specimen to the outside of the box (1); Complete the testing of the specimen.

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