A girder bottom steel bar ray detection imaging plate mounting device and mounting method

Abstract

The application provides a girder bottom steel bar ray detection imaging plate mounting device and mounting method, which comprises a lifting assembly mechanism, a compensation mechanism, an imaging plate mounting mechanism, and a compensation mechanism, wherein the compensation mechanism comprises a compensation block and a fixing assembly; the imaging plate mounting mechanism comprises a mounting table and a support frame, the mounting table is connected to the lifting assembly mechanism, and is arranged in a first direction away from the compensation mechanism; the support frame is connected to the mounting table, and is internally provided with a slot, the slot is arranged obliquely towards the compensation mechanism, and an imaging plate is inserted into the slot. The application can avoid mutual interference between the imaging plate and the compensation block during installation, or mutual interference between the imaging plate and the detected girder body, and can ensure stable installation of the imaging plate, improve the integrity of ray detection imaging through adjustable position relationship, realize the purpose of synchronous imaging of double steel bars, and has the advantages of installation and use, flexible adjustment, wide application range, high detection efficiency, high detection quality and the like.

Description

Technical Field

[0001] This invention relates to the field of building structure inspection technology, specifically to an installation device and method for an imaging plate for X-ray inspection of steel bars at the bottom of beams. Background Technology

[0002] With the continuous advancement of urbanization in my country, urban renewal has become a crucial development direction for urban construction in the next decade. Urban renewal not only involves the development and construction of new areas but also requires the renovation and upgrading of a large number of existing old buildings to improve their functionality, comfort, safety, and aesthetics, thereby adapting to the needs of modern urban development. In this process, the inspection and assessment of existing buildings is particularly critical, as it directly relates to the reliability of the building structure and is an indispensable and vital link in urban renewal and old city renovation.

[0003] In the renovation or assessment of existing concrete buildings, accurately understanding the reinforcement configuration within the concrete components is crucial. Parameters such as the diameter, spacing, and protective layer thickness of the reinforcement directly affect the calculation of the component's load-bearing capacity, thus determining the safety of the building structure and the feasibility of the renovation plan. However, many existing buildings were constructed a long time ago, and their design drawings are missing or incomplete, making it impossible to obtain accurate information about the reinforcement by consulting the original documents.

[0004] Currently, accurately measuring the diameter of reinforcing bars inside concrete remains a technical challenge. While electromagnetic induction and radar methods can detect the location of reinforcing bars relatively accurately, their diameter is difficult to determine precisely due to factors such as the electromagnetic properties of concrete and the arrangement of reinforcing bars. This leads to the widespread use of destructive chipping methods in practical engineering. This method requires removing a large area of ​​the protective layer to expose the reinforcing bars for direct measurement with calipers. This not only severely damages the integrity of the concrete structure but may also weaken the load-bearing capacity of components due to excessive chipping. Especially when the protective layer is thick or multiple reinforcing bars need to be tested, it can leave the structure riddled with holes, affecting durability. This testing method contradicts the concept of building preservation in urban renewal, highlighting the urgent need to develop more accurate non-destructive testing technologies.

[0005] With the development of technology, X-ray digital imaging technology has gradually matured, and its application scenarios have expanded from the medical industry to the construction field. Patent CN117388290A discloses "A method and system for detecting internal steel reinforcement and defects in building structural components." By arranging an X-ray machine and an imaging plate on both sides of the component, and setting an appropriate exposure time, the X-ray machine irradiates the component at a preset angle, and the imaging plate acquires internal images. The computer automatically identifies and calculates the images, and, combined with the relative positions of the X-ray machine, the component, and the imaging plate, accurately calculates the size of the steel reinforcement or defects. This method, based on digital imaging technology, can accurately determine the diameter of the steel reinforcement through computer data processing and correction calculations, providing a reliable basis for structural safety assessment. As an extension of the application scenarios of patent CN117388290A, patent CN118936377B discloses "An external calibration method and steel reinforcement diameter algorithm for detecting internal steel reinforcement in floor slabs using X-ray methods," providing a non-destructive testing technology for the diameter of internal steel reinforcement in floor slabs. This technology can accurately measure and calculate the diameter of internal steel reinforcement in floor slabs without damaging the ceiling and floor decoration layers.

[0006] In the assessment of existing concrete structures, X-ray methods are typically used to inspect four main types of components: concrete columns, beams, walls, and floor slabs. The X-ray inspection techniques described in patents CN117388290A and CN118936377B involve perpendicular imaging of walls and floor slabs, with the X-ray axis perpendicular to the surface of the component being inspected. This results in relatively uniform X-ray penetration thickness, allowing for clear imaging without the need for compensation blocks. However, for the X-ray inspection of the internal reinforcement in beams and columns, since beams and columns are generally large, exceeding the thickness of concrete that X-rays can penetrate, oblique beams must be used to reduce the penetration thickness and thus inspect some of the internal reinforcement. During oblique beams, the penetration thickness of each X-ray beam within the component is uneven; some rays penetrate thicker than others. Without compensation measures, areas with thinner penetration thickness will experience overexposure during imaging, affecting the image quality of the target. Therefore, when using oblique X-rays, compensation blocks are needed to compensate for the corners of beams and columns, making the X-ray penetration thickness uniform and achieving clear imaging of the target. The difficulty of equipment setup also varies greatly between beam and column X-ray inspections. When inspecting column reinforcement using X-rays, the equipment and compensation blocks can be placed on the ground to complete the imaging. However, when inspecting beam reinforcement using X-rays, because the beam is located at the top of the floor and is quite high, the X-ray machine, imaging plate, and compensation blocks need to be simultaneously placed in designated positions around the beam without interference, posing a significant challenge to the equipment setup.

[0007] When performing X-ray inspection on the corner reinforcement of a beam, the imaging plate is a rectangular plate structure that needs to be arranged diagonally on one side of the beam with its upper edge attached to the side of the beam. The X-ray machine is usually a cylindrical structure and is arranged diagonally below the other side of the beam. The compensation block is a triangular structure made of grouting material, weighing about 20 kg. It is usually arranged with its horizontal right-angled side close to the bottom of the beam and its vertical right-angled side is in the same vertical plane as the side of the beam on which the imaging plate is arranged. The following issues need to be addressed in the on-site arrangement: (1) Since the compensation block and the imaging plate are close to each other and they need to be arranged at different heights, if two independent lifting and assembly mechanisms are used to lift them, there will be spatial interference between the lifting and assembly mechanisms; (2) Although the fixed scaffolding is stable, it is inefficient and lacks flexibility; (3) The height of the imaging plate on the side of the beam needs to be adjusted according to the position of the reinforcement in the beam; (4) The imaging plate should avoid contact with the side of the beam during the lifting and lowering process to prevent scratch damage. After the lifting and lowering is in place, the imaging plate should still be able to continue to be arranged with its upper edge attached to the side of the beam.

[0008] In summary, the arrangement of the compensation block and the imaging plate should meet the following requirements: (1) The triangular compensation block should be arranged close to the bottom of the beam, and the vertical right-angled side of the compensation block should be flush with the side of the beam; (2) The imaging plate should be arranged obliquely and the upper edge of the imaging plate should be close to the side of the beam. At the same time, the height difference between the upper edge of the imaging plate and the bottom of the beam can be adjusted according to the position of the steel bars in the beam; (3) It is necessary to ensure the stable fixation of the compensation block and the imaging plate. At the same time, when the vertical right-angled side of the compensation block and the side of the beam are in the same vertical plane and the upper edge of the imaging plate is close to the side of the beam, the installation devices of the two should not cause spatial interference; (4) The imaging plate should not rub against the beam during the lifting process.

[0009] Based on the aforementioned equipment layout requirements, current engineering practice urgently needs to design a dedicated imaging plate installation device for X-ray inspection of beam bottom reinforcement and provide corresponding installation methods. A well-designed imaging plate installation device will significantly improve the efficiency and accuracy of inspection operations, provide reliable technical support for the safety assessment of existing building structures, and is of great significance for promoting urban renewal and the renovation of existing buildings. Summary of the Invention

[0010] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the accuracy and efficiency of imaging plate installation in the prior art need to be improved, and to provide an imaging plate installation device and installation method for beam bottom rebar X-ray inspection.

[0011] To solve the above-mentioned technical problems, the present invention provides an imaging plate installation device for beam bottom rebar radiographic inspection, which includes a lifting assembly mechanism, a compensation mechanism, and an imaging plate installation mechanism. The compensation mechanism and the imaging plate installation mechanism are respectively connected to the lifting assembly mechanism and can move relative to each other along a first direction. The compensation mechanism includes a compensation block and a fixing component. The fixing component is connected to the lifting assembly mechanism, and the compensation block is disposed in the fixing component. The imaging plate installation mechanism includes a mounting platform and a support frame. The mounting platform is connected to the lifting assembly mechanism, and the support frame is connected to the mounting platform and can move up and down through the mounting platform. The support frame has a slot inside, which is inclined towards the compensation mechanism, and the imaging plate is inserted into the slot.

[0012] In one embodiment of the present invention, the fixing component includes a top support and a stop, the top support and the stop being spaced apart along a first direction, and the compensation block being disposed between the top support and the stop, with one side supported by the top support and the other side abutting against the stop, so that the top surface of the compensation block is in contact with the beam to be tested.

[0013] In one embodiment of the present invention, the compensation block is configured as a right-angled triangular prism structure, the top support includes a top support inclined surface, the top support inclined surface extends downward from the top surface of the top support and gradually towards the stop, the side of the compensation block corresponding to the inclined side is supported on the top support inclined surface, the side of the compensation block corresponding to one right-angled side abuts against the stop, and the side of the compensation block corresponding to the other right-angled side is in contact with the beam to be tested.

[0014] In one embodiment of the present invention, the mounting platform includes telescopic legs and a platform. One end of the telescopic legs is connected to the lifting assembly mechanism, and the other end is connected to the platform. The support frame is slidably connected to the platform along the first direction.

[0015] In one embodiment of the present invention, the tabletop includes a frame and a tabletop insertion sleeve. The tabletop insertion sleeve is disposed at the bottom of the frame and is detachably connected to the telescopic leg. The frame is provided with an adjustment groove that extends along the first direction, and the support frame can slide along the adjustment groove.

[0016] In one embodiment of the present invention, the support frame includes a base plate, a support rod, and a mounting frame. The base plate is detachably connected to the table surface. The bottom end of the mounting frame is connected to the base plate, and the top end is inclined toward the beam to be tested. The two ends of the support rod are respectively connected to the base plate and the mounting frame. The slot is disposed in the mounting frame.

[0017] In one embodiment of the present invention, the mounting frame includes a main body, two bent portions and two limiting portions. The two bent portions are symmetrically arranged on both sides of the main body in a second direction and extend perpendicularly to the main body. The two limiting portions are correspondingly connected to the extended ends of the bent portions and extend parallel to the main body to form the slot. The slot has an angle of 45° with the horizontal plane. When the imaging plate is inserted into the slot, the top of the imaging plate is flush with the top of the mounting frame.

[0018] In one embodiment of the present invention, the lifting assembly mechanism includes a lifting driver, a lifting rod, and a connecting frame. The lifting rod is connected to the lifting driver, and the connecting frame is disposed at the top end of the lifting rod. It includes a fixed support rod and a movable support rod. The fixed support rod is connected to the lifting rod and extends along a second direction. The movable support rod is slidably connected to the fixed support rod and extends along a first direction. The compensation mechanism and the imaging plate mounting mechanism are respectively slidably connected to the movable support rod.

[0019] This invention also provides a method for installing a beam bottom rebar radiographic imaging plate, which uses the aforementioned beam bottom rebar radiographic imaging plate installation device to install the beam bottom rebar radiographic imaging plate. The method includes: Step S1, connecting the fixing component in the compensation mechanism and the imaging plate installation mechanism to the lifting assembly mechanism, ensuring that the distance between the compensation mechanism and the imaging plate installation mechanism is not less than the horizontal projection width of the installation frame, and installing the compensation block into the compensation mechanism; Step S2, adjusting the height of the imaging plate installation mechanism according to the position of the bottom corner rebar and its adjacent first rebar of the beam to be inspected, so that the radiographic projections of the bottom corner rebar and its adjacent first rebar can be displayed on the imaging plate, and installing the imaging plate into the imaging plate installation mechanism; Step S3, lifting the lifting assembly mechanism until the compensation block is in contact with the bottom surface of the beam to be inspected; Step S4, adjusting the imaging plate installation mechanism so that the imaging plate is in contact with the side surface of the beam to be inspected, completing the beam bottom rebar radiographic imaging plate installation process.

[0020] In step 2, to ensure that the ray projections of the bottom corner reinforcement of the beam and its adjacent first reinforcement are both displayed on the imaging plate, when adjusting the height of the imaging plate mounting mechanism, the vertical distance h between the top of the mounting frame and the right-angled side of the compensation block used to fit the beam to be inspected must satisfy the following: In the formula lThe length of the imaging plate is specified. a1 refers to the distance from the center of the bottom corner reinforcement of the beam to the side of the beam on one side of the imaging plate. b1 refers to the distance from the center of the bottom corner reinforcement of the beam to the bottom surface of the beam. a2 refers to the distance from the center of the first adjacent reinforcement bar of the bottom corner reinforcement of the beam to the side of the beam on one side of the imaging plate. b2 refers to the distance from the center of the first adjacent reinforcement bar of the bottom corner reinforcement of the beam to the bottom surface of the beam. The slot in the imaging plate mounting mechanism is set at a 45° angle to the horizontal direction.

[0021] The technical solution of the present invention has the following advantages compared with the prior art:

[0022] 1. The beam bottom reinforcement radiographic inspection imaging plate installation device of the present invention, by giving the imaging plate installation mechanism a dual adjustment mechanism in the vertical direction and a dual adjustment mechanism in the horizontal direction, enables the imaging plate and the compensation block to not interfere with each other during the installation and arrangement process, and allows the height of the imaging plate relative to the compensation block and the contact surface of the beam bottom to be freely adjusted. It also ensures that the imaging plate does not rub against the beam body during the lifting and lowering process, and ultimately meets all the arrangement requirements of the imaging plate and the compensation block. By employing an electric lifting assembly mechanism and a mounting platform with vertically adjustable telescopic legs, the imaging plate mounting mechanism achieves a dual vertical adjustment mechanism, enabling the imaging plate and compensation block to rise synchronously while also adjusting their relative height. Through the sleeve connection between the imaging plate mounting mechanism and the top connecting frame of the lifting assembly mechanism, as well as the sliding groove connection between the support frame and the mounting platform, a dual horizontal adjustment mechanism is achieved. This ensures that the imaging plate and compensation mechanism do not interfere with each other spatially, and that the imaging plate does not rub against the beam during its ascent. Furthermore, the imaging plate can be moved laterally to fit snugly against the beam. The entire device is simple in structure, low in cost, and easy to apply and promote in engineering projects.

[0023] 2. This invention combines the dual adjustment mechanism of the imaging plate installation mechanism, which has both vertical and horizontal capabilities. It rationally arranges the installation steps for the two vertical and two horizontal adjustment operations involved in the actual installation process. This minimizes labor intensity, improves installation efficiency, and ensures installation accuracy while meeting the installation requirements of the imaging plate and compensation block. Before the electric lifting assembly mechanism is raised, the first step is to adjust the horizontal distance between the imaging plate installation mechanism and the compensation mechanism. The second step is to adjust the height between the imaging plate installation frame and the compensation block. The second step is actually to pre-adjust the vertical distance between the top of the imaging plate and the bottom of the beam after installation. The above two steps, especially the second step, require high precision, and the workflow is longer than the latter two steps. Therefore, before the electric lifting assembly mechanism is raised, the operator must work on the ground. The third step is to raise the electric lifting assembly mechanism. The fourth step is to push the support frame with the inserted imaging plate towards the side of the beam until the upper edge of the imaging plate is in contact with the side of the beam. The latter two steps are relatively simple, and even if the fourth step requires the operator to work at height, it is relatively easy.

[0024] 3. The installation device of the present invention adopts a combination of electric and manual adjustment, and the power distribution is reasonable. The electric adjustment means is allocated to the lifting stage of the heavy object compensation block. The remaining vertical and horizontal adjustments are made manually because the objects being adjusted are in an unloaded state and are relatively light. The entire process does not require manual lifting of heavy objects. Thus, the imaging plate installation mechanism and the compensation mechanism are integrated into one electric lifting assembly mechanism, which perfectly solves the problem of insufficient layout space when using two electric lifting assembly mechanisms and further reduces the cost of the device.

[0025] 4. Based on the positioning of the inner corner reinforcement of the beam, a reasonable range for the height of the imaging plate is calculated through projection imaging path, enabling simultaneous imaging of the bottom corner reinforcement of the beam and its adjacent first reinforcement. This arrangement scheme achieves synchronous imaging of two reinforcements through precise calculation, significantly improving detection efficiency.

[0026] Compared with conventional installation techniques at present, this application is not only easier to install and use, more flexible in adjustment, and more applicable, but also significantly improves the efficiency and accuracy of testing operations, and has broad application prospects in this industry. Attached Figure Description

[0027] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the installation device for the beam bottom reinforcement X-ray inspection imaging plate in a preferred embodiment of the present invention;

[0029] Figure 2 yes Figure 1 A three-dimensional structural diagram of the connecting frame in the beam bottom reinforcement X-ray inspection imaging plate installation device shown;

[0030] Figure 3 yes Figure 1 A schematic diagram of the platform structure in the beam bottom reinforcement X-ray inspection imaging plate installation device shown;

[0031] Figure 4 yes Figure 1 A three-dimensional structural diagram of the support frame in the beam bottom reinforcement X-ray inspection imaging plate installation device shown.

[0032] Figure 5 This is a flowchart of the installation method of the beam bottom reinforcement X-ray inspection imaging plate in another embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram showing the calculation of the lower limit of the vertical distance h between the top of the mounting frame of the present invention and the right-angled side of the compensation block used to fit the beam to be tested;

[0034] Figure 7 This is a schematic diagram illustrating the calculation of the upper limit of the vertical distance h between the top of the mounting frame of the present invention and the right-angled side of the compensation block used to fit the beam to be tested;

[0035] Explanation of reference numerals in the accompanying drawings: 100, Lifting assembly mechanism; 110, Lifting driver; 120, Lifting rod; 130, Connecting frame; 131, Fixed support rod; 1311, Frame insertion sleeve; 132, Moving support rod; 200, Compensation mechanism; 210, Compensation block; 220, Fixed component; 221, Top support; 222, Stop; 300, Imaging plate mounting mechanism; 310, Mounting platform; 311, Telescopic leg; 312, Platform; 3121, Frame; 3122, Adjustment groove; 320, Support frame; 321, Base plate; 322, Support rod; 323, Mounting frame; 3231, Bending part; 3232, Limiting part; 3233, Main body; 3234, Slot; 400, Fixing component; 410, Sleeve square tube; 420, Wing nut; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0037] It should be noted that existing building structure inspection technologies face several pressing problems in practical applications: Firstly, because the compensation block 210 and the imaging plate need to be close together during the inspection process and ultimately placed at different heights, if two independent lifting and assembly mechanisms are used to support them respectively, mechanical interference can easily occur during adjustment due to overlapping spatial layouts, affecting the adjustment accuracy and operational safety of each mechanism. Secondly, traditional inspection methods often use fixed scaffolding to install and fix related inspection components. While this ensures a certain degree of stability, the erection and dismantling of scaffolding is time-consuming and labor-intensive, and it cannot be quickly adjusted according to different inspection positions, resulting in low efficiency and severely insufficient flexibility, making it difficult to adapt to various situations. This application addresses the detection needs of different beam structures. Furthermore, the placement height of the imaging plate on the beam side is not fixed and requires targeted height adjustment based on the actual position of the reinforcing bars within the beam. Existing devices lack a convenient parametric adjustment mechanism, often necessitating repeated disassembly and reassembly to meet imaging coverage requirements. Additionally, the imaging plate must strictly avoid direct contact with the beam side during lifting to prevent surface damage or positional displacement due to abrasion. Once in position, the imaging plate must have its upper edge tightly fitted against the beam side to ensure imaging accuracy. Existing technologies struggle to simultaneously balance the dual requirements of preventing abrasion during lifting and ensuring proper fit after positioning, easily leading to imaging plate damage or poor imaging quality. Therefore, this application proposes the following solution:

[0038] Example 1:

[0039] See Figure 1 As shown, this embodiment provides an imaging plate installation device for beam bottom rebar X-ray inspection, which includes a lifting assembly mechanism 100, a compensation mechanism 200, and an imaging plate installation mechanism 300. The compensation mechanism 200 and the imaging plate installation mechanism 300 are respectively connected to the lifting assembly mechanism 100 and can move relative to each other along a first direction X. The compensation mechanism 200 includes a compensation block 210 and a fixing component 220. The fixing component 220 is connected to the lifting assembly mechanism 100, and the compensation block 210 is disposed in the fixing component 220. The imaging plate installation mechanism 300 includes a mounting platform 310 and a support frame 320. The mounting platform 310 is connected to the lifting assembly mechanism 100, and the support frame 320 is connected to the mounting platform 310 and can move up and down through the mounting platform 310. The support frame 320 has a slot 3234 inside, which is inclined towards the compensation mechanism 200, and the imaging plate is inserted into the slot 3234.

[0040] For ease of description, in this embodiment, the length direction of the beam bottom rebar X-ray inspection imaging plate installation device is defined as the first direction X, the width direction of the beam bottom rebar X-ray inspection imaging plate installation device is defined as the second direction Y, and the height direction of the beam bottom rebar X-ray inspection imaging plate installation device is defined as the third direction Z. The first direction X, the second direction Y, and the third direction Z are mutually perpendicular to each other, and the first direction X and the second direction Y are located in the same plane.

[0041] The lifting assembly mechanism 100 serves to provide a unified adjustment benchmark for the compensation mechanism 200 and the imaging plate mounting mechanism 300, avoiding spatial interference. It connects the compensation mechanism 200 and the imaging plate mounting mechanism 300 simultaneously via an integrated lifting frame, maintaining a preset interval between them along the first direction X. This fundamentally solves the mechanical interference problem caused by spatial overlap between independent lifting assembly mechanisms. In actual use, the lifting assembly mechanism 100 can synchronously or independently drive the compensation mechanism 200 and the imaging plate mounting mechanism 300 to move vertically according to parameters such as beam height and rebar position, eliminating the need for repeated assembly and disassembly, significantly improving adjustment efficiency and flexibility, while avoiding the drawbacks of fixed scaffolding that cannot be quickly adjusted.

[0042] See Figure 1 and Figure 2 As shown, the lifting assembly mechanism 100 in this embodiment includes a lifting driver 110, a lifting rod 120, and a connecting frame 130. The lifting rod 120 is connected to the lifting driver 110, and the connecting frame 130 is disposed at the top of the lifting rod 120. The connecting frame 130 includes a fixed support rod 131 and a movable support rod 132. The fixed support rod 131 is connected to the lifting rod 120, and the movable support rod 132 is connected to the fixed support rod 131 and extends along the first direction X. The compensation mechanism 200 and the imaging plate mounting mechanism 300 are slidably connected to the movable support rod 132. The lifting rod 120 adopts a double-section telescopic structure design, which can flexibly adjust the total length according to the beam height requirements, avoiding the drawbacks of traditional fixed-length supports that cannot adapt to different beams. The lifting driver 110 is preferably a linear motor, which can drive the inner tube to move up and down. In other embodiments, the lifting rod 120 can also be configured as a multi-section telescopic structure; this invention does not impose specific limitations on this.

[0043] The connecting frame 130, through the cooperation of the fixed support rod 131 and the movable support rod 132, achieves horizontal spacing adjustment and stable connection between the compensation mechanism 200 and the imaging plate mounting mechanism 300, thereby further optimizing the anti-interference effect. The fixed support rod 131 transforms the vertical support of the lifting rod 120 into a horizontal support, providing a stable installation reference for the movable support rod 132. Simultaneously, the rigid connection ensures that the connecting frame 130 as a whole does not wobble, preventing horizontal instability from affecting the fit of the compensation block 210 and the positioning accuracy of the imaging plate. Specifically, it has a frame insertion sleeve 1311 in its middle, which is detachably sleeved on the end of the lifting rod 120. The movable support rod 132 extends horizontally along the first direction X, providing a movable installation platform for the compensation mechanism 200 and the imaging plate mounting mechanism 300.

[0044] Specifically, the connecting frame 130 includes two movable support rods 132, and the fixed support rod 131 extends along the second direction Y. The two movable support rods 132 are slidably connected to the fixed support rod 131. On the one hand, the two movable support rods 132 can improve the connection stability of the compensation mechanism 200 and the imaging plate mounting mechanism 300, and at the same time, distribute the weight and force of the compensation mechanism 200 and the imaging plate mounting mechanism 300, avoiding stress concentration or deformation at the connection points caused by concentrated load, thereby significantly improving the connection stability of the compensation mechanism 200 and the imaging plate mounting mechanism 300 and ensuring detection accuracy. On the other hand, the operator can adjust the interval between the two movable support rods 132 according to the actual size of the compensation mechanism 200 and the imaging plate mounting mechanism 300, the installation interface position, and other connection requirements, so as to adapt it to different connection structures of the compensation mechanism 200 and the imaging plate mounting mechanism 300.

[0045] Furthermore, in this embodiment, the movable support rod 132 is connected to the fixed support rod 131 via a fixing member 400. The fixing member 400 includes a sleeve square tube 410 and a wing nut 420. This structural design ensures the stability of the connection between the movable support rod 132 and the fixed support rod 131, and also provides convenient operation for position adjustment. The sleeve square tube 410 adopts a square structure adapted to the cross-section of the fixed support rod 131 and the movable support rod 132. One end of the sleeve is fitted onto the outside of the fixed support rod 131, and the other end is fixedly connected to the end of the movable support rod 132. The wing nut 420 penetrates the side wall of the sleeve square tube 410, and its screw end can directly abut against the surface of the fixed support rod 131. The position of the movable support rod 132 on the fixed support rod 131 is locked by the threaded locking. Specifically, when it is necessary to adjust the position of the movable support rod 132 along the fixed support rod 131, the operator needs to loosen the wing nut 420 and adjust the movable support rod 132 to the target position. After the position is determined, tighten the wing nut 420 in the opposite direction until the screw end is tightly pressed against the surface of the fixed support rod 131. Through the dual action of friction and thread locking force, it is ensured that the movable support rod 132 will not be displaced during subsequent testing.

[0046] In this embodiment, the compensation mechanism 200 is used to ensure that the thickness of the X-ray penetration is uniform, thereby ensuring uniform imaging quality. The compensation block 210 fills the difference in the thickness of the beam in the X-ray penetration path by fitting the bottom surface of the beam, thus avoiding imaging blurring or distortion caused by inconsistent X-ray attenuation.

[0047] The fixing component 220 is used for connection and positioning to prevent thickness compensation deviation caused by loosening of the compensation block 210. Specifically, the fixing component 220 includes a top support 221 and a stop 222. The top support 221 and the stop 222 are spaced apart along a first direction X. The compensation block 210 is disposed between the top support 221 and the stop 222, with one side supported by the top support 221 and the other side abutting against the stop 222, so that the top surface of the compensation block 210 fits against the beam to be tested. The top support 221 and the stop 222 are spaced apart along the first direction X to form a clamping and positioning space adapted to the size of the compensation block 210. One side of the compensation block 210 is directly supported on the support surface to ensure that the compensation block 210 does not wobble in the horizontal direction. The stop 222 serves as a limiting constraint structure for the compensation block 210 and is set on the side of the compensation block 210 away from the beam to be inspected. Its end is in close contact with the other side of the compensation block 210 to form a reverse constraint force. In actual use, the inclined support force of the top support 221 and the abutment force of the stop 222 are balanced in the first direction X. The compensation block 210 is stably confined between the two, and under the action of this constraint force, the top surface of the compensation block 210 can be tightly attached to the bottom surface of the beam to be inspected. This avoids the problem of X-ray penetration gap caused by the compensation block 210 not being tightly attached, and also prevents the compensation block 210 from shifting due to device fine-tuning during the inspection process. This provides structural protection for the thickness compensation effect of subsequent X-ray inspection.

[0048] Specifically, in this embodiment, both the stop 222 and the top support 221 are detachably connected to the movable support rod 132 via the fixing member 400, so that they can be adapted to compensation blocks 210 of different sizes. The compensation block 210 is configured as a right-angled triangular prism structure, and the top support 221 includes a top support slope that gradually extends downwards from the top surface of the top support 221 toward the stop 222 to form a right-angled trapezoidal structure. The side of the compensation block 210 corresponding to the slope rests on the top support slope, and the side of the compensation block 210 corresponding to one right-angled side abuts against the stop 222, while the side of the compensation block 210 corresponding to the other right-angled side is in contact with the beam to be tested. In different embodiments, the shape and size of the compensation block 210 can be set to other shapes according to the actual beam to be tested, and correspondingly, the supporting surface of the top support 221 can also be set to other shapes; this invention does not impose specific limitations on this.

[0049] In this embodiment, the mounting platform 310 includes a telescopic leg 311 and a platform 312. One end of the telescopic leg 311 is connected to the lifting assembly mechanism 100, and the other end is connected to the platform 312. The support frame 320 can be slidably connected to the platform 312 along the first direction X. Based on the above structure, vertical adjustment and horizontal support of the imaging plate can be achieved. Specifically, the telescopic leg 311 can be used for fine-tuning the height of the body surface. It is also configured as a telescopic structure, wherein a fixed sleeve is connected to the connecting frame 130, and a telescopic rod can be inserted inside the fixed sleeve. The two are fastened together by a fastener 400.

[0050] The tabletop 312 includes a frame 3121 and a tabletop insertion sleeve. The tabletop insertion sleeve is located at the bottom of the frame 3121 and is detachably connected to the telescopic leg 311. This insertion design does not require complicated bolt tightening or welding operations. Only the top of the telescopic leg 311 needs to be inserted into the tabletop insertion sleeve to complete the initial fixation. Subsequently, a detachable connection structure can be achieved through the fastener 400.

[0051] Through the electric lifting assembly mechanism and the mounting platform with vertically adjustable telescopic legs, the imaging plate mounting mechanism achieves a dual adjustment mechanism that is independent of each other in the vertical direction, thereby enabling the imaging plate and the compensation block to adjust their relative height on the synchronously raised base layer.

[0052] The frame 3121 is provided with an adjustment groove 3122, which extends along the first direction X. The support frame 320 can slide along the adjustment groove 3122. In actual use, the extension length of the adjustment groove 3122 is generally set to be more than 150mm. The support frame 320 is slidably connected to the frame 3121 by bolts. When it reaches the target position, the position can be fixed by tightening the bolts. Specifically, in this embodiment, two symmetrical adjustment grooves 3122 are provided on the frame 3121. The two adjustment grooves 3122 are arranged along the second direction Y on both sides of the frame 3121 to improve the stability of the support frame 320.

[0053] By connecting the imaging plate mounting mechanism with the connecting frame and the sliding groove connection between the support frame and the mounting platform, a dual adjustment mechanism that is independent of each other in the horizontal direction is realized. This ensures that the imaging plate mounting mechanism and the compensation mechanism do not interfere with each other in space and that the imaging plate does not rub against the beam during the rising process. Finally, the imaging plate can be moved to the side of the beam and placed in close contact with it.

[0054] See Figure 4As shown, the support frame 320 in this embodiment includes a base plate 321, a support rod 322, and a mounting frame 323. The base plate 321 is detachably connected to the platform 312. The bottom end of the mounting frame 323 is connected to the base plate 321, and the top end is inclined towards the beam to be tested. The two ends of the support rod 322 are respectively connected to the base plate 321 and the mounting frame 323. The slot 3234 is disposed in the mounting frame 323. The base plate 321 is connected to the platform 312 by bolts and has a hollow structure in its middle to reduce the overall weight of the support frame 320. The mounting frame 323 serves as a direct mounting carrier for the imaging plate. One end is fixedly connected to the base plate 321, while the other end is inclined towards the compensation mechanism. In this embodiment, the preferred inclination angle is 45°, the same as the detection X-ray. This inclination design allows the slot 3234 within the mounting frame 323 to align with the beam to be inspected. After the imaging plate is inserted into the slot 3234, its upper edge can directly conform to the side of the beam without additional angle adjustment, avoiding incomplete imaging coverage due to angle deviation. Simultaneously, the inclined mounting frame 323 reduces the risk of friction between the imaging plate and the beam side, ensuring a smooth fit after lifting and lowering. The support rod 322 is connected at both ends to the base plate 321 and the mounting frame 323, forming a triangular support structure. This effectively distributes the weight of the mounting frame 323 and the imaging plate, preventing the mounting frame 323 from tilting or deforming due to long-term stress. Furthermore, the support rod 322 buffers vibrations during the inspection process, preventing the imaging plate from shifting within the slot 3234, further ensuring the stability of the imaging plate position and providing structural support for the imaging accuracy of the X-ray inspection.

[0055] Furthermore, the mounting frame 323 in this embodiment includes a main body 3233, two bent portions 3231, and two limiting portions 3232. The two bent portions 3231 are symmetrically arranged on both sides of the main body 3233 in the second direction Y and extend perpendicularly to the main body 3233. The two limiting portions 3232 are correspondingly connected to the extended ends of the bent portions 3231 and extend parallel to the main body 3233 to form a slot 3234 for mounting the imaging plate. When the imaging plate is inserted into the slot, the top of the imaging plate is flush with the top of the mounting frame. This not only better protects the imaging plate through the mounting frame, but also allows for adjustment of the required relative height using the mounting frame as a reference point when the imaging plate is not yet inserted into the mounting frame during the overall installation process. The above structure can limit the imaging plate in all directions to improve its stability during imaging detection.

[0056] In summary, this embodiment has the following effects:

[0057] By providing the compensation mechanism 200 and the imaging plate installation mechanism 300 with dual adjustment mechanisms in the vertical direction and horizontal direction, the imaging plate and the compensation block 210 can not interfere with each other during the installation process, and the height of the imaging plate relative to the compensation block 210 and the bottom contact surface of the beam can be freely adjusted. It can also ensure that the imaging plate does not rub against the beam during the lifting process, and ultimately meet all the arrangement requirements of the imaging plate and the compensation block 210.

[0058] The aforementioned structure expands the scope of radiographic testing of beams, while not only improving installation efficiency but also ensuring installation accuracy. Furthermore, its structural design is small in size, does not occupy too much extra space, and has low cost, making it a promising candidate for use in this industry.

[0059] Based on the structural design that allows for relative adjustment between the imaging plate mounting mechanism 300 and the compensation mechanism 200, the simultaneous imaging of different reinforcing bars within the beam can be achieved, which not only improves the detection quality but also significantly enhances the detection efficiency.

[0060] Example 2:

[0061] This embodiment provides a method for installing a beam bottom rebar radiographic imaging plate, which uses the beam bottom rebar radiographic imaging plate installation device described in Embodiment 1 to install the beam bottom rebar radiographic imaging plate, and includes:

[0062] Step S1: Connect the fixing component in the compensation mechanism and the imaging plate mounting mechanism to the lifting assembly mechanism, ensuring that the distance between the compensation mechanism and the imaging plate mounting mechanism is not less than the horizontal projection width of the mounting frame. Install the compensation block into the compensation mechanism. In this embodiment, the slot in the imaging plate mounting mechanism is set at a 45° angle to the horizontal direction. The imaging plate can tilt synchronously with the slot angle, and its receiving surface can form a face-to-face posture with the propagation direction of the 45° test ray. This maximizes the effective receiving area of ​​the imaging plate, ensuring that the ray completely penetrates the beam reinforcement and is projected entirely into the effective area of ​​the imaging plate. At the same time, this angle matching can also reduce the reflection and scattering interference of the ray on the imaging plate surface, reduce image blurring and distortion caused by angle deviation, and ultimately ensure that the generated reinforcement ray image is clear and accurate, meeting the validity requirements of the detection data.

[0063] In actual adjustment, the distance between the compensation mechanism and / or the imaging plate mounting mechanism can be adjusted by changing their actual positions. This ensures that the imaging plate and compensation block do not interfere with each other during installation and avoids interference between the imaging plate mounting mechanism and the beam during the lifting process. After adjusting the distance between the fixing components of the compensation mechanism and the imaging plate mounting mechanism, the compensation block can be installed into the compensation mechanism, making the adjustment process easy and convenient.

[0064] Step S2: Adjust the height of the imaging plate mounting mechanism according to the position of the bottom corner reinforcement and its adjacent first reinforcement of the beam to be inspected, so that the ray projections of the bottom corner reinforcement and its adjacent first reinforcement can be displayed on the imaging plate, and then install the imaging plate into the imaging plate mounting mechanism. Based on this operation, the vertical height of the imaging plate can be accurately positioned, avoiding problems such as missing or incomplete projections of the target reinforcement due to height deviation. The above two steps, especially the second step, require high precision, and the process is longer than the latter two steps. Therefore, the operator should stand on the ground to perform the work before the electric lifting assembly mechanism is raised. Specifically, in this embodiment, step S2 is as follows:

[0065] Step S21: Using a rebar scanner, measure the following distances: a1 = 40mm from the center of the bottom corner rebar of the beam to the side of the beam on one side of the imaging plate; b1 = 50mm from the center of the bottom corner rebar of the beam to the bottom surface of the beam; a2 = 110mm from the center of the first rebar adjacent to the bottom corner rebar of the beam to the side of the beam on one side of the imaging plate; and b2 = 42mm from the center of the first rebar adjacent to the bottom corner rebar of the beam to the side of the beam.

[0066] Step S22: Adjust the vertical distance h between the top of the mounting frame and the right-angled side of the compensation block used to fit the beam to be inspected. At this time, since the imaging plate has not yet been installed in the imaging plate mounting mechanism, the top of the imaging plate is flush with the top of the mounting frame. The mounting frame is used as a reference to adjust the required relative height, thereby adjusting the relative height between the top of the imaging plate and the bottom of the beam after the overall installation is completed. During adjustment, h should satisfy Formula 1: ,in, l The length of the imaging plate is 350mm in this embodiment. a1 refers to the distance from the center of the bottom corner reinforcement to the side of the beam on one side of the imaging plate; b1 refers to the distance from the center of the bottom corner reinforcement to the bottom surface of the beam; a2 refers to the distance from the center of the first adjacent reinforcement bar to the side of the beam on one side of the imaging plate; b2 refers to the distance from the center of the first adjacent reinforcement bar to the bottom surface of the beam. The above calculations determine the effective projection range of the imaging plate installation area, i.e., the installation range of h is 276mm~461mm. Wherein, 1 / 4×√2 l +a2+b2 is used to limit the lower limit of the projection of the internal reinforcement of the beam to be inspected, so as to reserve a safe distance from the lower edge of the imaging plate to the lowest position of the projection, to avoid the projection touching the edge or exceeding it, and to ensure the projection is complete. Correspondingly, 3 / 4×√2 l +a1+b1 is used to limit the upper limit of the projection of the internal reinforcement of the beam to be tested.

[0067] Reference Figure 6 and Figure 7 The derivation of Formula 1 is as follows:

[0068] First, based on the actual situation, two assumptions are made:

[0069] Assumption (1): The angle between the principal axis of the ray beam and the bottom of the beam is 45 degrees;

[0070] Assumption (2): To ensure the integrity of the imaging effect, the effective projection range of the reinforcing bars in the imaging plate is defined as being within the length direction of the imaging plate. l / 4~3 l Within / 4, that is, the indication Figure 6 , Figure 7 The area within the red line segment indicates that the projection of the reinforcing bars within the red line can be completely imaged, while the projection outside the red line cannot guarantee complete image quality. This can be referred to... Figure 6 Through geometric relationships, we obtain h > 1 / 4 × √2 l +a² + b²; refer to Figure 7 Through geometric relationships, we obtain h < 3 / 4 × √2 l +a1+b1.

[0071] Step S23: Attach a calibration plate to the side of the beam near the imaging plate to provide an external calibration reference for the X-ray inspection image and the measurement benchmark for the projected dimensions of the reinforcing bars, ensuring the accuracy of subsequent calculation results.

[0072] Step S24: Adjust the height of the support frame in the imaging mounting mechanism according to the vertical distance h between the top of the mounting frame and the right-angled side of the compensation block used to fit the beam to be tested. Specifically, in this embodiment, the height of the imaging plate mounting mechanism is adjusted first, and then the imaging plate is installed into the imaging plate mounting mechanism. This operation sequence makes the adjustment process relatively easy and avoids the possibility of damage to the imaging plate. If the imaging plate is placed first, the four telescopic legs of the platform are likely to be uneven during the adjustment process, causing it to tip over.

[0073] Step S25: Install the imaging plate into the imaging plate mounting mechanism. Specifically, in this embodiment, when the imaging plate is inserted into the slot, the top of the imaging plate is flush with the top of the mounting frame to ensure the safety of the imaging plate. Even in the event of a collision, the mounting frame provides protection.

[0074] Step S3: Raise the lifting assembly mechanism until the compensation block is in contact with the bottom surface of the beam to be inspected. Specifically, in this embodiment, the beam bottom rebar X-ray inspection imaging plate installation device is moved horizontally to below the beam measuring point position to ensure that the vertical right-angled surface of the compensation block is basically flush with the side surface of the beam. Then, the compensation mechanism and the imaging plate installation mechanism are raised as a whole by the lifting assembly mechanism. Further, when the top surface of the compensation block is close to the bottom of the beam, the lifting speed is reduced to avoid the compensation block colliding with the beam to be inspected, so that the top surface of the compensation block is tightly attached to the bottom surface of the beam, and its vertical right-angled surface is flush with the side surface of the beam.

[0075] Step S4: Adjust the imaging plate mounting mechanism to make the imaging plate fit against the side of the beam to be inspected, completing the installation process of the imaging plate for beam bottom rebar X-ray inspection. Specifically, in this embodiment, the operator climbs up and slides the support frame along the adjustment groove in the platform towards the side of the beam, so that the inclined top of the imaging plate is in close contact with the side of the beam. In actual operation, the last two steps are relatively simple, and even if the fourth step requires the operator to climb, it is relatively easy.

[0076] After completing the above installation process, the X-ray machine is placed in another lifting assembly mechanism. Its angle with the side of the beam is adjusted to 45° using an angle gauge, and then it is secured with straps and a fixed extension rod. It is then moved to the side of the compensation block, and the electric lifting assembly mechanism containing the X-ray machine is raised so that the X-ray port is aligned with the target reinforcing steel. Imaging begins under conditions of a tube voltage of 250kV and an exposure time of 0.4min to obtain the final image of the internal reinforcing steel of the beam.

[0077] In summary, this embodiment has the following effects:

[0078] 1. This embodiment combines the dual adjustment mechanism of the imaging plate installation mechanism, which has both vertical and horizontal capabilities. The installation steps are reasonably arranged so that the two vertical adjustment operations and two horizontal adjustment operations involved in the actual installation process are arranged. This minimizes labor intensity, improves installation efficiency, and ensures installation accuracy while meeting the installation requirements of the imaging plate and compensation block.

[0079] 2. The installation device in this embodiment adopts a combination of electric and manual adjustment, and the power distribution is reasonable. The electric adjustment is allocated to the lifting stage of the weight compensation block. The remaining vertical and horizontal adjustments are made manually because the objects being adjusted are in an unloaded state and are relatively light. The entire process does not require manual lifting of the heavy objects. Thus, the imaging plate installation mechanism and the compensation block installation mechanism are integrated into one electric lifting assembly mechanism, which perfectly solves the problem of insufficient space when using two electric lifting assembly mechanisms and further reduces the cost of the device.

[0080] 3. Based on the positioning of the inner corner reinforcement of the beam, a reasonable range for the height of the imaging plate is calculated through projection imaging path calculation, enabling simultaneous imaging of the bottom corner reinforcement of the beam and its adjacent first reinforcement. This arrangement scheme achieves synchronous imaging of two reinforcement bars through precise calculation, significantly improving detection efficiency.

[0081] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An installation device for a beam bottom reinforcement X-ray inspection imaging plate, characterized in that: This includes a lifting and assembly mechanism, a compensation mechanism, and an imaging plate mounting mechanism. The lifting assembly mechanism includes a lifting driver, a lifting rod, and a connecting frame. The lifting rod is connected to the lifting driver, and the connecting frame is disposed at the top end of the lifting rod. The connecting frame includes a fixed support rod and at least one movable support rod. The fixed support rod is connected to the lifting rod and extends along a second direction. The movable support rod is slidably connected to the fixed support rod and extends along a first direction. The compensation mechanism and the imaging plate mounting mechanism are slidably connected to the movable support rod to move relative to each other along the first direction. The compensation mechanism includes a compensation block and a fixing component, the fixing component is connected to the lifting assembly mechanism, and the compensation block is disposed in the fixing component; An imaging plate mounting mechanism includes a mounting platform and a support frame. The mounting platform is connected to the lifting assembly mechanism and includes a telescopic leg and a table surface. One end of the telescopic leg is connected to the lifting assembly mechanism, and the other end is connected to the table surface. The support frame is slidably connected to the table surface along a first direction and can be moved up and down by the mounting platform. The support frame has a slot inside, which is inclined toward the compensation mechanism. The imaging plate is inserted into the slot.

2. The beam bottom reinforcement X-ray inspection imaging plate installation device according to claim 1, characterized in that: The fixing component includes a top support and a stop. The top support and the stop are spaced apart along a first direction. The compensation block is disposed between the top support and the stop, with one side supported by the top support and the other side abutting against the stop, so that the top surface of the compensation block is in contact with the beam to be tested.

3. The beam bottom reinforcement X-ray inspection imaging plate installation device according to claim 2, characterized in that: The compensation block is configured as a right-angled triangular prism structure. The top support includes a top support slope. The top support slope extends downward from the top surface of the top support towards the stop. The side of the compensation block corresponding to the slope is supported on the top support slope. The side of the compensation block corresponding to one right-angled side abuts against the stop, and the side of the compensation block corresponding to the other right-angled side is in contact with the beam to be tested.

4. The beam bottom reinforcement X-ray inspection imaging plate installation device according to claim 1, characterized in that: The tabletop includes a frame and a tabletop insertion sleeve. The tabletop insertion sleeve is located at the bottom of the frame and is detachably connected to the telescopic leg. The frame is provided with an adjustment groove that extends along the first direction, and the support frame can slide along the adjustment groove.

5. The beam bottom reinforcement X-ray inspection imaging plate installation device according to claim 1, characterized in that: The support frame includes a base plate, a support rod, and a mounting frame. The base plate is detachably connected to the table surface. The bottom end of the mounting frame is connected to the base plate, and the top end is inclined toward the compensation mechanism. The two ends of the support rod are respectively connected to the base plate and the mounting frame. The slot is provided in the mounting frame.

6. The beam bottom reinforcement X-ray inspection imaging plate installation device according to claim 5, characterized in that: The mounting frame includes a main body, two bent portions, and two limiting portions. The two bent portions are symmetrically arranged on both sides of the main body in a second direction and extend perpendicularly to the main body. The two limiting portions are correspondingly connected to the extended ends of the bent portions and extend parallel to the main body to form the slot. The slot has an angle of 45° with the horizontal plane. When the imaging plate is inserted into the slot, the top of the imaging plate is flush with the top of the mounting frame.

7. A method for installing an imaging plate for X-ray inspection of reinforcing bars at the bottom of beams, characterized in that: The installation of the beam bottom reinforcement radiographic imaging plate using the beam bottom reinforcement radiographic imaging plate installation device according to any one of claims 1 to 6 includes: Step S1: Connect the fixed component in the compensation mechanism and the imaging plate mounting mechanism to the lifting assembly mechanism respectively, and make the interval between the compensation mechanism and the imaging plate mounting mechanism not less than the horizontal projection width of the mounting frame, and install the compensation block into the compensation mechanism. Step S2: Adjust the height of the imaging plate mounting mechanism according to the position of the bottom corner reinforcement and the first adjacent reinforcement of the beam to be inspected, so that the ray projection of the bottom corner reinforcement and the first adjacent reinforcement can be displayed on the imaging plate, and install the imaging plate into the imaging plate mounting mechanism. Step S3: Lift the lifting assembly mechanism until the compensation block is in contact with the bottom surface of the beam to be tested; Step S4: Adjust the imaging plate mounting mechanism to make the imaging plate fit against the side of the beam to be inspected, thus completing the installation process of the imaging plate for the beam bottom reinforcement X-ray inspection.

8. The method for installing a beam bottom reinforcement radiographic imaging plate according to claim 7, characterized in that: In step S2, to ensure that the ray projections of the bottom corner reinforcement of the beam and its adjacent first reinforcement are both displayed on the imaging plate, when adjusting the height of the imaging plate mounting mechanism, the vertical distance h between the top of the mounting frame and the right-angled side of the compensation block used to fit the beam to be inspected must satisfy the following: In the formula l The length of the imaging plate is specified. a1 refers to the distance from the center of the bottom corner reinforcement of the beam to the side of the beam on one side of the imaging plate. b1 refers to the distance from the center of the bottom corner reinforcement of the beam to the bottom surface of the beam. a2 refers to the distance from the center of the first adjacent reinforcement bar of the bottom corner reinforcement of the beam to the side of the beam on one side of the imaging plate. b2 refers to the distance from the center of the first adjacent reinforcement bar of the bottom corner reinforcement of the beam to the bottom surface of the beam. The slot in the imaging plate mounting mechanism is set at a 45° angle to the horizontal direction.

Images