A building steel structure deformation detection device

Abstract

The application relates to the technical field of steel structure detection, and discloses a building steel structure deformation detection equipment which comprises a turnover rotary adjusting support mechanism, a clamping driving mechanism, an extension positioning mechanism and a laser detection mechanism. The turnover rotary adjusting support mechanism comprises a base, support plates symmetrically and fixedly arranged at the two sides of the upper end of the base, a turnover structure and a rotary structure. The turnover structure is arranged at the upper end of the support plate, the rotary structure is arranged at the inner side end of the turnover structure, the turnover structure is used for driving the rotary structure, and the rotary structure is used for driving the upper part to rotate and adjust. The clamping driving mechanism is arranged at the upper end of the rotary structure, the extension positioning mechanism is fixedly arranged at the upper end of the clamping driving mechanism, and the laser detection mechanism is fixedly arranged at the upper ends of the two sides of the turnover rotary adjusting support mechanism. The building steel structure deformation detection equipment realizes full-chain linkage of bearing, turnover, rotation, clamping, lifting and detection, multi-dimensional position, multi-stage clamping, double-reference calibration cooperation, and achieves all-around high-precision detection of workpieces.

Description

Technical Field

[0001] This invention relates to the field of steel structure testing technology, specifically to a deformation testing device for building steel structures. Background Technology

[0002] To ensure the final shape of the steel structure meets the architectural design requirements, facilitate smooth construction, improve structural safety and reliability, and extend the building's service life, monitoring of key components of the steel structure (planar displacement, vertical deformation, and stress and strain of important members) during the construction phase is crucial for early warning of structural damage.

[0003] Existing steel structure deformation detection equipment has limited workpiece position adjustment capabilities, with most only having a single rotation or simple flipping function and lacking a two-dimensional linkage adjustment mechanism. The workpiece surface to be inspected is difficult to quickly align with the detection light curtain, requiring manual repeated disassembly and reassembly and adjustment of the workpiece clamping position, which is cumbersome, inefficient, and prone to causing secondary damage to the workpiece.

[0004] The clamping and positioning structure has poor adaptability. Traditional clamps are mostly single clamping structures, lacking a graded transmission design for coarse and fine adjustment, making it difficult to adapt to steel structure workpieces with different cross-sectional dimensions and weights. Without bottom support for auxiliary positioning, relying solely on clamping from both sides, the workpiece is prone to tilting and shifting, resulting in insufficient clamping stability. Heavy workpieces are prone to tipping over, affecting the reliability of test data. At the same time, the clamps lack a flexible protective structure, which can easily scratch the surface coating of the workpiece during clamping.

[0005] The detection reference is prone to shift. Most existing detection equipment uses a single fixed horizontal reference. When the workpiece is flipped or the angle is adjusted, the equipment installation error and position change will cause the detection reference to shift. There is a lack of movable calibration reference, and it is impossible to automatically compensate for the detection deviation caused by the angle. The detection accuracy is inconsistent under different postures.

[0006] Insufficient equipment support rigidity and simple, lacking reinforcement structures in some testing equipment make the support components prone to bending deformation under tilting loads, causing a shift in the testing reference. High frictional resistance in rotating components makes them susceptible to jamming under heavy loads, resulting in poor stability of the tilting motion. Furthermore, the laser detection unit lacks fault alarm devices, failing to promptly alert to laser device malfunctions and easily leading to erroneous test results. Therefore, corresponding technical solutions need to be designed to address these issues. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a deformation detection device for building steel structures, thus solving its technical problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a deformation detection device for building steel structures, comprising a flipping and rotating adjustment support mechanism, a clamping drive mechanism, an extension positioning mechanism, and a laser detection mechanism. The flipping and rotating adjustment support mechanism includes a base, support plates symmetrically fixed on both sides of the upper end of the base, a flipping structure, and a rotating structure. The flipping structure passes through the upper end of the support plate, and the rotating structure is installed on the inner end of the flipping structure. The flipping structure is used to drive the rotating structure and the above components to flip and adjust, and the rotating structure is used to drive the components above it to rotate and adjust.

[0009] The clamping drive mechanism is installed on the upper end of the rotating structure, and the extension positioning mechanism is fixedly installed on the upper end of the clamping drive mechanism. The clamping drive mechanism is used to drive the extension positioning mechanism to clamp and position the building steel structure.

[0010] The laser detection mechanism is fixedly installed on both sides of the upper end of the flip-rotate adjustment support mechanism and extends upward to the extension positioning mechanism, and is used to detect the deformation of the building steel structure held by the extension positioning mechanism.

[0011] The flip-rotation adjustment support mechanism provides bottom support and spatial posture adjustment for the whole machine, and adopts a layered architecture of "base support, flip structure and rotation structure".

[0012] The base is a rectangular rigid welded base, forming the bottom mounting reference of the equipment; the support plate is a vertical plate shape, symmetrically welded to both sides of the upper end of the base, serving as the main support for the installation of the flipping and rotating structures; the clamping drive mechanism is the first-level drive unit for the clamping action, adopting a transmission architecture of "gear reduction and parallelogram linkage" to achieve first-level coarse adjustment of the clamping width; the extension positioning mechanism is the execution terminal for directly clamping the workpiece, adopting a composite positioning architecture of "side clamping and bottom lifting"; the laser detection mechanism spans across the workpiece to form a detection light curtain, adopting a dual horizontal reference architecture of "fixed reference and moving calibration" to achieve deformation detection and accuracy verification of the steel structure.

[0013] Preferably, a reinforcing plate is fixed between the front and rear ends of the support plate and the base;

[0014] The flipping structure includes a rotating shaft, a fixed cylinder, a fixed shaft disc, a drive shaft, a drive shaft disc, and a drive motor. The fixed cylinder is fixed through and near the upper end of the support plate. The rotating shaft is rotatably connected inside the fixed cylinder. The fixed shaft disc is fixed to the outside of one end of the rotating shaft. The drive shaft is rotatably connected to the outer wall of the support plate.

[0015] The drive shaft disk is fixed to the outside of the drive shaft rod, and the drive shaft disk and the fixed shaft disk are connected by a transmission belt.

[0016] The output end of the first drive motor is connected to the outer end of the drive shaft, and a positioning seat is fixed between the bottom of the first drive motor and the outer side wall of the support plate.

[0017] The reinforcing plate is triangular and positioned between the front and rear ends of the support plate and the base; it significantly improves the support rigidity, preventing the support plate from flexing under tilting loads and ensuring the reference accuracy of posture adjustment; the rotating shaft is coaxially inserted inside the fixed cylinder, serving as the rotation axis for the tilting action, and can drive the rotating structure and all components above it to tilt and rotate; the fixed cylinder is laterally inserted and fixed in the shaft hole near the upper end of the support plate, providing radial support for the rotating shaft; the fixed shaft disc is fixedly installed on the outer protruding end of the rotating shaft, and engages with the drive shaft disc via a transmission belt to form a belt drive; the drive shaft is arranged parallel to the rotating shaft and rotatably connected to the outer wall of the support plate, used to install the drive shaft disc and transmit power; the drive shaft disc is fixed to the body of the drive shaft and cooperates with the fixed shaft disc to achieve belt drive; the belt drive achieves speed reduction and torque increase, while utilizing the buffering and vibration absorption characteristics of the belt drive to improve the smoothness of the tilting process; drive motor one provides power output for the tilting action, and the output end is coaxially connected to the drive shaft; the positioning seat cantilever is fixed to the outer wall of the support plate for installing and fixing drive motor one.

[0018] Preferably, the rotating structure includes a mounting plate, a horizontal plate, a rotating seat, and a second drive motor. The mounting plate is symmetrically fixed at both ends of the top of the horizontal plate. The mounting plate is installed on the inner end of the rotating shaft by bolts. A mounting seat is fixed between the side of the second drive motor and the bottom of the horizontal plate. The output end of the second drive motor passes through the horizontal plate upward and is connected to the rotating seat for transmission.

[0019] The mounting plate is vertically fixed to the top of both ends of the horizontal plate and is fastened to the inner end of the rotating shaft with bolts, so that the horizontal plate and the rotating shaft can rotate synchronously. The horizontal plate is a transverse load-bearing plate, which serves as the load-bearing base of the rotating structure, supporting the rotating seat and all the working parts above it. The rotating seat supports all the working parts above it and can rotate continuously 360° around the vertical axis. The second drive motor provides power output for the rotation, and the output shaft is connected to the rotating seat. The mounting base is fixed to the center of the bottom of the horizontal plate and is used to install and fix the second drive motor.

[0020] Preferably, the outer side wall of the rotating seat is fixedly provided with end plates, the bottom of the end plates is fixedly provided with positioning cylinders, and the bottom of the positioning cylinders is inlaid with and movably connected with rolling balls;

[0021] One of the support plates has an arc-shaped limiting groove on its inner side. A connecting rod is fixed on one side of the horizontal plate. The outer end of the connecting rod is rotatably connected to a sliding bearing, which slides and rotates within the limiting groove.

[0022] The end plates are circumferentially distributed on the outer wall of the rotating seat for mounting and fixing the positioning cylinder. The positioning cylinder is vertically fixed to the bottom of the end plate, with an embedded rolling ball inside, providing a mounting carrier for the rolling support. The rolling ball is embedded in the bottom of the positioning cylinder, with its bottom abutting against the upper surface of the horizontal plate. This forms a multi-point rolling support structure, effectively distributing the axial load of the rotating seat, reducing rotational friction resistance, and preventing rotational jamming under heavy load. The adapter rod is horizontally fixed to the corresponding side of the horizontal plate, with a sliding bearing installed at its outer end, which works with the limiting groove to achieve tilting guidance and limiting. The sliding bearing is installed at the outer end of the adapter rod and embedded in the limiting groove to form a rolling fit. This reduces the tilting adjustment resistance and improves the smoothness of the tilting action. The limiting groove is opened on the inner side of the single-sided support plate, is arc-shaped, and its center coincides with the axis of the rotating shaft. This limits the maximum tilting angle range to prevent over-tilting and equipment collision. It forms an auxiliary support point on the outer side of the horizontal plate to counteract the off-center load torque during the tilting process.

[0023] Preferably, the clamping drive mechanism includes a support, a fixed plate, a drive gear, a third drive motor, a fixed gear, a positioning gear, and a connecting plate. The support is installed at both ends of the bottom of the fixed plate and at the center of the upper end of the rotating seat. The third drive motor is fixed to the lower end of the fixed plate. The drive gear is rotatably connected to the output end of the third drive motor. The drive gear is meshed with the fixed gear. The fixed gear is meshed with the inner end of the positioning gear and is rotatably connected to the middle of the fixed plate. An extension plate is fixed to the upper end of the fixed gear and the positioning gear. A movable rod is connected through the inner end of the fixed gear and the positioning gear. The connecting plate is movably connected between the movable rod and the upper end of the extension plate. Movable rods are movably connected to the front and rear of the upper end of the fixed plate. The movable rods are movably connected to the upper end of the connecting plate.

[0024] Supports are symmetrically arranged at both ends of the bottom of the fixed plate, and the bottom is fastened to the upper end face of the rotating seat, mounting the entire clamping drive mechanism above the rotating platform. The fixed plate serves as the mounting base for the clamping drive mechanism, bearing all transmission components such as gears and connecting rods. The drive motor is inverted and fixed to the lower end face of the fixed plate, providing power output for the clamping action. The drive gear is mounted on the output shaft of the drive motor, meshing externally with the fixed gear to transmit power and achieve first-stage reduction. The fixed gear is rotatably connected to the middle of the fixed plate, meshing externally with the drive gear and internally with the positioning gear plate, forming the intermediate stage of the second-stage gear reduction transmission. The positioning gear plate is rotatably connected to the middle of the fixed plate, meshing internally with the fixed gear, forming the second-stage gear reduction transmission. Output stage; while reducing the transmission space, it significantly increases the output torque, ensuring the clamping force of large-sized workpieces; the extension plate is fixed to the upper surface of the fixed gear and the positioning gear plate respectively, and rotates synchronously with the gear / gear plate, used to hinge the first movable rod; the inner end of the first movable rod is hinged to the inner end of the extension plate, and the outer end is hinged to the connecting plate; converting the rotational motion of the gear into the horizontal translational motion of the connecting plate; the inner end of the second movable rod is hinged to the front and rear sides of the upper part of the fixed plate, and the outer end is hinged to the side of the connecting plate; together with the first movable rod and the connecting plate, it forms a parallelogram linkage guide mechanism to ensure the stability of the translational motion of the connecting plate; the connecting plate, as the output end of the clamping drive mechanism, drives the upper extension positioning mechanism to perform horizontal translation, realizing the adjustment of the clamping width.

[0025] Preferably, the extended positioning mechanism includes a support column, a movable plate, a clamping positioning plate one, a clamping positioning plate two, a rotating frame, and an electric push rod device one. The support column is fixed to the upper extension of the connecting plate, the clamping positioning plate one is fixed to the upper end of the support column, the rotating frame is respectively installed on the upper and lower ends of the clamping positioning plate one, the electric push rod device one is fixed inside the rotating frame, the outer end of the electric push rod device one is connected to a push rod one, the outer end of the push rod one is fixed with a support plate, the clamping positioning plate two is fixed to the inner end of the support plate, the inner ends of the clamping positioning plate one and the clamping positioning plate two are both rubber protrusion structures, and the electric push rod device one is electrically connected downward to a power supply base.

[0026] A protruding plate is fixedly provided at the outer end of the support plate, a limiting rod is fixedly provided at the outer end of the protruding plate, a limiting cylinder is fixedly provided at the outer end of the rotary frame, and the limiting rod is slidably connected to the inside of the limiting cylinder.

[0027] The support column is vertically fixed to the upper extension of the connecting plate and moves synchronously with the connecting plate, serving as the installation support for components such as the clamping positioning plate. The clamping positioning plate is horizontally fixed to the upper end of the support column, forming a fixed clamping side and serving as a clamping reference surface. The rotating frame is installed on the upper and lower ends of both sides of the clamping positioning plate to install and fix the electric push rod device. The electric push rod device is horizontally fixed inside the rotating frame, providing secondary power for the clamping action, realizing secondary fine adjustment of the clamping force and reliable locking. The push rod is connected to the output end of the electric push rod device, driving the support plate and the clamping positioning plate to move horizontally. The support plate is vertically fixed to the outer end of the push rod, and the clamping positioning plate is fixed on the inner side, serving as the installation carrier for the movable clamping side. The clamping positioning plate is fixed. Inside the support plate, a movable clamping structure is formed, which cooperates with the clamping positioning plate to clamp the workpiece. A rubber protrusion structure is set on the clamping working surface of the clamping positioning plate and the clamping positioning plate. This increases the clamping friction to prevent the workpiece from slipping and avoids damage to the coating on the steel structure surface through flexible contact. The power base provides unified power to the electric push rod devices on both sides, ensuring that the two operate synchronously. The protrusion plate is fixed to the outer end of the support plate and is used to install the limiting rod. The limiting rod is laterally fixed to the outer end of the protrusion plate and coaxially passes through the limiting cylinder. This provides precise radial constraint for the translation of the clamping positioning plate and avoids swaying during clamping. The limiting cylinder is fixed to the outer end of the rotary frame and forms a sliding guide structure with the limiting rod. This improves the clamping centering and accuracy.

[0028] Preferably, a base plate is fixed to the bottom of the clamping and positioning plate 2, and a pad is fixed to the outer end of the base plate;

[0029] The movable plate is movably connected to the upper part of the inside of the support or base plate. A support is fixed above the inner end of the movable plate. A baffle is fixed at the bottom of the outer end of the movable plate. A telescopic rod is fixed at the inner end of the baffle. An electric telescopic device is connected to the inner end of the telescopic rod. The electric telescopic device is fixed at the support or base plate.

[0030] The base plate is horizontally fixed to the bottom of the clamping and positioning plate 2, and the outer end is fixed with a pad, which serves as the mounting carrier for the movable plate and the electric telescopic device. The pad is fixed to the outer end of the base plate for installing and fixing the electric telescopic device. The movable plate is horizontally penetrating and slidably connected to the upper part of the support column or the base plate, and can extend or retract laterally to support the support components. The support is fixed to the upper part of the inner end of the movable plate, which can form a lifting support from the bottom of the workpiece. The baffle is vertically fixed to the bottom of the outer end of the movable plate for connecting the telescopic rod and driving the movable plate to move horizontally. The outer end of the telescopic rod is fixed to the baffle, and the inner end is connected to the electric telescopic device to transmit the telescopic power. The electric telescopic device is fixed at the support column or the pad, driving the telescopic rod to extend and retract, and driving the movable plate to move laterally. Together with the clamping plates on both sides, a three-point positioning structure of "double-sided clamping and bottom lifting" is formed to improve the anti-overturning ability and stability of the workpiece clamping.

[0031] Preferably, the laser detection mechanism includes a fixed frame, a top plate, an adjusting plate, an electric push rod device, a laser emitter head, and a laser receiver head. The fixed frame is fixed above the side of the support plate, the top plate is fixed at the middle of the upper end of the fixed frame, the laser emitter head is connected to the bottom left end of the top plate, the laser receiver head is connected to the bottom right end of the top plate, a fault indicator lamp is electrically connected through the upper end of the laser emitter head, and a detection display screen is electrically connected to the upper end of the top plate.

[0032] The mounting bracket has an L-shaped vertical structure, with its bottom fixed to the upper side of the support plate and its top extending horizontally towards the workpiece, serving as the mounting support for the top plate and the detection components. The top plate is horizontally fixed to the middle of the upper ends of the two mounting brackets, spanning directly above the workpiece detection position, serving as the mounting carrier for the laser detection element. Laser emitting heads are horizontally distributed at the bottom left end of the top plate, emitting laser beams and forming multiple parallel laser detection light curtains in conjunction with laser receiving heads. Laser receiving heads are correspondingly distributed at the bottom right end of the top plate, receiving laser beams. When workpiece deformation blocks the light path at the corresponding position, the light signal changes, thereby accurately identifying the position, length, and amount of deformation. The fault indicator lamp is electrically connected to the upper end of the laser emitting head, providing real-time feedback on the working status of the laser head and providing immediate alarm in case of a fault. The detection display screen is set at the upper end of the top plate, intuitively displaying the detection data, deformation contour, and result judgment.

[0033] Preferably, a laser level detector is electrically connected to the inner sidewall of the fixing frame near the upper end;

[0034] The second electric push rod device is fixed at the upper rear of the top plate. The output end of the second electric push rod device is connected to the second push rod. The adjustment plate is fixed at the outer end of the second push rod. The lower inner end of the adjustment plate is electrically connected to the second laser level detector.

[0035] The upper side of the adjusting plate is fixedly provided with a second protruding plate, the side of the electric push rod device is fixedly provided with a second limiting cylinder, the front end of the second protruding plate is fixedly provided with a second limiting rod, and the second limiting rod is slidably connected to the inside of the second limiting cylinder.

[0036] A laser level detector is installed near the top of the inner wall of the fixed frame, forming a fixed horizontal reference point for verifying the overall installation levelness of the equipment. An electric push rod device is installed behind the top of the top plate, driving the adjusting plate to move laterally, thus moving the laser level detector. The push rod is connected to the output end of the electric push rod device, causing the adjusting plate to move horizontally. The adjusting plate is fixed to the outer end of the push rod, and the laser level detector is installed on its lower inner side, serving as the mounting carrier for the moving horizontal reference. The laser level detector is installed on the lower inner side of the adjusting plate, allowing for... A horizontal detection is performed at the same position to form a moving horizontal benchmark; in conjunction with a laser level detector, multi-point horizontal benchmark verification is achieved to offset benchmark offsets caused by equipment installation errors and changes in rotation angle, ensuring detection accuracy; a second convex plate is fixed to the upper side of the adjustment plate and is used to install a second limiting rod; the second limiting rod is fixed to the front end of the second convex plate and is slidably connected inside the second limiting cylinder, providing guiding constraints for the translation of the adjustment plate; the second limiting cylinder is fixed to the side of the second electric push rod device, forming a sliding guide structure with the second limiting rod, ensuring the stability and accuracy of the translation of the adjustment plate.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] (1) The flip-rotation adjustment support mechanism provides bottom support and spatial posture adjustment for the whole machine, and adopts a layered architecture of "base support, flip structure and rotation structure".

[0039] The base is a rectangular rigid welded base, which forms the bottom mounting reference of the equipment; two support plates are vertical plates and symmetrically welded to the upper two sides of the base. Triangular reinforcing plates are set between the front and rear ends of the support plates and the base. The triangular reinforcing structure greatly improves the support rigidity, avoids the support plates from bending deformation under the overturning load, and ensures the reference accuracy of the position adjustment.

[0040] The belt-driven tilting structure consists of a rotating shaft, a fixed cylinder, a fixed shaft disc, a drive shaft, a drive shaft disc, a drive motor, and a positioning seat. The fixed cylinder is horizontally inserted and fixed in the shaft hole near the upper end of the support plate, providing radial support for the rotating shaft. The rotating shaft is coaxially inserted inside the fixed cylinder, with the fixed shaft disc fixedly installed at its outer protruding end. The drive shaft is arranged parallel to the rotating shaft and rotatably connected to the outer wall of the support plate. The drive shaft disc is fixed to the shaft body, and the drive shaft disc and the fixed shaft disc are connected by a transmission belt to form a belt drive. The drive motor is cantilevered to the outer wall of the support plate through the positioning seat, and its output end is coaxially connected to the drive shaft. The belt drive achieves speed reduction and torque increase, and at the same time, the buffering and vibration absorption characteristics of the belt drive improve the stability of the tilting process. It can drive the rotating structure and all the components above it to tilt and tilt around the axis of the rotating shaft.

[0041] The main rotating structure consists of a mounting plate, a horizontal plate, a rotating seat, and a second drive motor. It is further supported by end plates, positioning cylinders, and rolling balls, forming rolling supports. A transition rod, sliding bearings, and limiting grooves provide tilting and limiting guidance. The horizontal plate is a transverse load-bearing plate with symmetrically fixed vertical mounting plates at both ends. The mounting plates are bolted to the inner ends of the rotating shaft, allowing the horizontal plate and rotating shaft to rotate synchronously. The second drive motor is fixed to the center of the bottom of the horizontal plate via the mounting seat, and its output axis passes through the horizontal plate and is connected to the rotating seat. The rotating seat carries all the working parts above and can rotate continuously 360° around its vertical axis. Multiple radial end plates are distributed circumferentially on the outer wall of the rotating seat. Each end plate has a vertical positioning cylinder fixed to its bottom, with rolling balls embedded in the bottom of the positioning cylinder. The bottom of the rolling balls abuts against the upper surface of the horizontal plate, forming a multi-point rolling support structure. This effectively distributes the axial load of the rotating seat, reduces rotational friction resistance, and prevents rotational jamming under heavy loads.

[0042] Meanwhile, an arc-shaped limiting groove is opened on the inner side of the single-sided support plate, and the center of the groove is completely coincident with the axis of the rotating shaft; a transverse adapter rod is fixed on the corresponding side of the horizontal plate, and a sliding bearing is installed at the outer end of the adapter rod. The sliding bearing is embedded in the limiting groove to form a rolling fit; on the one hand, it limits the maximum angle range of the flip to prevent the equipment from colliding due to over-flipping; on the other hand, it forms an auxiliary support point on the outer side of the horizontal plate to counteract the off-center load torque during the flipping process. At the same time, the rolling friction of the sliding bearing greatly reduces the adjustment resistance and improves the smoothness of the flipping action.

[0043] (2) The clamping drive mechanism is installed at the center of the upper end of the rotating seat. It is the first-level drive unit for clamping action and adopts the transmission structure of "gear reduction and parallelogram linkage".

[0044] The supports are symmetrically arranged at both ends of the bottom of the fixed plate, and the bottom is fastened to the upper end face of the rotating seat, so that the entire clamping drive mechanism is mounted above the rotating platform; the drive motor is fixed in three inverted positions on the lower end face of the fixed plate, and the output axis passes through the fixed plate and is installed with the drive gear; the fixed gear and the positioning gear are rotatably connected to the middle of the fixed plate, the drive gear meshes externally with the fixed gear, and the fixed gear meshes internally with the positioning gear, forming a two-stage gear reduction transmission structure, which greatly increases the output torque while reducing the transmission space, and ensures the clamping force of large workpieces.

[0045] Both the fixed gear and the positioning gear plate have radial extension plates fixed to their upper surfaces, and movable rod one is hinged to the inner end of each. The bottom of the connecting plate is hinged to the outer end of movable rod one, and a movable rod two is hinged to the front and rear sides of the upper part of the fixed plate. The outer end of movable rod two is hinged to the side of the connecting plate, together forming a parallelogram linkage guide mechanism. During operation, the drive motor three outputs power, which is transmitted sequentially through the drive gear, fixed gear, and positioning gear plate, causing the two side extension plates to rotate synchronously in opposite directions. Movable rod one pushes and pulls the connecting plate to make horizontal translation, and movable rod two swings synchronously to form a stable guide. Finally, it drives the upper extension positioning mechanism to complete the first-level coarse adjustment of the clamping width, which is suitable for steel structure workpieces with various cross-sectional sizes.

[0046] (3) The extended positioning mechanism is fixed at the upper end of the clamping drive mechanism and is the execution terminal that directly clamps the workpiece. It adopts a composite positioning architecture of "side clamping and bottom lifting".

[0047] The support column is vertically fixed to the upper extension of the connecting plate and moves synchronously with the connecting plate. The clamping positioning plate is horizontally fixed to the upper end of the support column, forming a fixed clamping side. Rotary frames are installed at the upper and lower ends of both sides of the clamping positioning plate. An electric push rod device is horizontally fixed through each rotary frame. Its output end is connected to the push rod. The outer end of the push rod is fixed to a vertical support plate. The inner side of the support plate is fixed to the clamping positioning plate, forming a movable clamping structure. The clamping working surfaces of both the clamping positioning plate and the clamping positioning plate are provided with rubber protrusions, which not only increase the clamping friction to prevent the workpiece from slipping, but also avoid damaging the coating on the steel structure surface through flexible contact. The electric push rod devices on both sides are powered by a power socket and move synchronously, driving the clamping positioning plate to move horizontally, realizing two-stage fine adjustment of the clamping force and reliable locking.

[0048] Meanwhile, a convex plate is fixed to the outer end of the support plate, and a transverse limiting rod is fixed to the outer end of the convex plate; a limiting cylinder is fixed to the outer end of the rotating frame, and the limiting rod is coaxially inserted into the limiting cylinder to form a sliding guide structure, which provides precise radial constraint for the translation of the clamping positioning plate, avoids swaying during clamping, and improves clamping centering and accuracy.

[0049] In addition, a horizontal base plate is fixed to the bottom of the clamping and positioning plate 2, and a pad is fixed to the outer end of the base plate; the movable plate is horizontally connected to the upper part of the support column or the base plate, a support is fixed to the upper part of the inner end of the movable plate, and a vertical baffle is fixed to the bottom of the outer end; the outer end of the telescopic rod is fixed to the baffle, and the inner end is connected to the electric telescopic device, which is fixed to the support column or the pad; when the electric telescopic device drives the telescopic rod to extend or retract, it drives the movable plate to extend or retract horizontally, and the support can form a lifting support from the bottom of the workpiece. Together with the clamping plates on both sides, a three-point positioning structure of "double-sided clamping and bottom lifting" is formed, which greatly improves the anti-overturning ability and stability of the workpiece clamping and avoids the workpiece moving during the inspection process from affecting the inspection results.

[0050] (4) The laser detection mechanism is fixed on the upper ends of both sides of the flipping and rotating adjustment support mechanism, forming a detection light curtain across the workpiece, and adopts a dual horizontal reference architecture of "fixed reference and moving calibration".

[0051] The mounting bracket has an L-shaped vertical structure, with its bottom fixed to the upper side of the support plate and its top extending horizontally towards the workpiece. The top plate is horizontally fixed to the middle of the upper end of the two mounting brackets, spanning directly above the workpiece detection position. Multiple laser emitters are distributed horizontally along the left end of the bottom of the top plate, and multiple laser receivers are distributed correspondingly along the right end, forming multiple parallel laser detection light curtains. When the clamped steel structure workpiece is bent or twisted, the deformed part will block the laser light path at the corresponding position, and the light signal of the laser receiver will change. Based on this, the position, length and amount of deformation can be accurately identified. The upper end of the laser emitter is electrically connected to a fault indicator lamp, which can provide real-time feedback on the working status of the laser head and provide an immediate alarm when a fault occurs. The upper end of the top plate is equipped with a detection display screen, which can intuitively display the detection data, deformation contour and result judgment.

[0052] A laser level detector is installed near the top of the inner wall of the fixed frame to form a fixed horizontal reference point for verifying the overall installation levelness of the equipment. An electric push rod device is installed at the rear of the top of the top plate, with its output end connected to a push rod. An adjustment plate is fixed to the outer end of the push rod, and a laser level detector is installed on the lower inner side of the adjustment plate. The electric push rod device can drive the adjustment plate to move laterally, causing the laser level detector to perform horizontal detection at different positions, forming a moving horizontal reference. This, together with the laser level detector, enables multi-point horizontal reference verification, which can offset the reference offset caused by equipment installation errors and changes in the rotation angle, ensuring detection accuracy. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall front upper right view structure of the present invention;

[0054] Figure 2 This is a schematic diagram of the overall front lower left view structure of the present invention;

[0055] Figure 3 This is a schematic diagram of the clamping drive mechanism and the extended positioning mechanism of the present invention from a lower view.

[0056] Figure 4 This is a schematic diagram of the clamping drive mechanism and the extension positioning mechanism of the present invention from an upper view.

[0057] Figure 5 This is a schematic diagram of the clamping drive mechanism and the extension positioning mechanism of the present invention from another perspective.

[0058] Figure 6 This is a schematic diagram of the extended positioning mechanism from a lower side view.

[0059] Figure 7 This is a schematic diagram of the extended positioning mechanism from the inner side view of the present invention;

[0060] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0061] Figure 9 This is a schematic diagram of the extended positioning mechanism from the outer side view of the present invention;

[0062] Figure 10 This is a schematic diagram of the laser detection mechanism of the present invention from a lower viewpoint.

[0063] Figure 11 This is a schematic diagram of the laser detection mechanism of the present invention from an upper viewpoint.

[0064] Figure 12 For the present invention Figure 10 Enlarged structural diagram at point B;

[0065] Figure 13 For the present invention Figure 11 Enlarged structural diagram at point C;

[0066] Figure 14 This is a schematic diagram of the flip-rotate adjustment support mechanism from the upper right view of the present invention;

[0067] Figure 15 This is a schematic diagram of the flip-rotate adjustment support mechanism from the upper left view of the present invention;

[0068] Figure 16 For the present invention Figure 14 Enlarged structural diagram at point D.

[0069] In the diagram: 1. Tilting and rotating adjustment support mechanism; 11. Support plate; 111. Reinforcing plate; 12. Base; 13. Rotating shaft; 131. Fixed cylinder; 132. Fixed shaft disc; 133. Drive shaft; 134. Drive shaft disc; 135. Drive motor one; 136. Positioning seat; 14. Mounting plate; 15. Horizontal plate; 16. Rotating seat; 161. End plate; 162. Positioning cylinder; 163. Rolling ball; 164. Drive motor two; 165. Mounting seat; 17. Adapter rod; 171. Sliding bearing; 172. Limiting groove;

[0070] 2. Clamping drive mechanism; 21. Support; 22. Fixing plate; 23. Drive gear; 231. Drive motor three; 24. Fixing gear; 25. Positioning gear plate; 26. Movable rod one; 27. Movable rod two; 28. Extension plate; 29. ​​Connecting plate;

[0071] 3. Extension positioning mechanism; 31. Support column; 32. Base plate; 321. Pad plate; 33. Movable plate; 331. Support; 332. Baffle; 333. Telescopic rod; 334. Electric telescopic device; 34. Clamping positioning plate one; 35. Clamping positioning plate two; 36. Rotary frame; 37. Electric push rod device one; 371. Push rod one; 372. Support plate; 373. Protruding plate one; 374. Limiting rod one; 375. Limiting cylinder one; 376. Power supply base;

[0072] 4. Laser detection mechanism; 41. Fixing frame; 411. Laser level detector I; 42. Top plate; 43. Detection display screen; 44. Adjustment plate; 441. Laser level detector II; 442. Convex plate II; 443. Limiting rod II; 444. Electric push rod device II; 445. Push rod II; 446. Limiting cylinder II; 45. Laser emitter head; 46. Laser receiver head; 47. Fault indicator light head. Detailed Implementation

[0073] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] Please see Figures 1-16 The present invention provides a technical solution: a deformation detection device for building steel structures, including a flipping and rotating adjustment support mechanism 1, a clamping drive mechanism 2, an extension positioning mechanism 3, and a laser detection mechanism 4. The flipping and rotating adjustment support mechanism 1 includes a base 12, support plates 11 symmetrically fixed on both sides of the upper end of the base 12, a flipping structure, and a rotating structure. The flipping structure passes through the upper end of the support plate 11, and the rotating structure is installed on the inner end of the flipping structure. The flipping structure is used to drive the rotating structure and the above components to flip and adjust, and the rotating structure is used to drive the components above it to rotate and adjust.

[0075] The clamping drive mechanism 2 is installed on the upper end of the rotating structure, and the extension positioning mechanism 3 is fixedly installed on the upper end of the clamping drive mechanism 2. The clamping drive mechanism 2 is used to drive the extension positioning mechanism 3 to clamp and position the building steel structure.

[0076] The laser detection mechanism 4 is fixedly installed on both sides of the upper end of the flip-rotate adjustment support mechanism 1 and extends above the extension positioning mechanism 3, and is used to detect the deformation of the building steel structure held by the extension positioning mechanism 3.

[0077] Flip-rotation adjustment support mechanism 1: Provides bottom support and spatial posture adjustment for the whole machine, and adopts a layered architecture of "base 12 support, flip structure and rotation structure".

[0078] The base 12 is a rectangular rigid welded base, forming the bottom mounting reference of the equipment; the support plate 11 is a vertical plate, symmetrically welded to both sides of the upper end of the base 12, serving as the main support for the installation of the flipping and rotating structures; the clamping drive mechanism 2 is the first-level drive unit for the clamping action, adopting a transmission architecture of "gear reduction and parallelogram linkage" to achieve first-level coarse adjustment of the clamping width; the extension positioning mechanism 3 is the execution terminal for directly clamping the workpiece, adopting a composite positioning architecture of "side clamping and bottom lifting"; the laser detection mechanism 4 spans across the workpiece to form a detection light curtain, adopting a dual horizontal reference architecture of "fixed reference and moving calibration" to achieve deformation detection and accuracy verification of the steel structure.

[0079] Further improved, a reinforcing plate 111 is fixed between the front and rear ends of the support plate 11 and the base 12;

[0080] The flipping structure includes a rotating shaft 13, a fixed cylinder 131, a fixed shaft disc 132, a drive shaft 133, a drive shaft disc 134, and a drive motor 135. The fixed cylinder 131 is fixed through and near the upper end of the support plate 11. The rotating shaft 13 is rotatably connected inside the fixed cylinder 131. The fixed shaft disc 132 is fixed to the outside of one end of the rotating shaft 13. The drive shaft 133 is rotatably connected to the outer wall of the support plate 11.

[0081] The drive shaft disk 134 is fixed to the outside of the drive shaft rod 133, and the drive shaft disk 134 and the fixed shaft disk 132 are connected by a transmission belt.

[0082] The output end of the drive motor 135 is connected to the outer end of the drive shaft 133, and a positioning seat 136 is fixed between the bottom of the drive motor 135 and the outer side wall of the support plate 11.

[0083] The reinforcing plate 111 is triangular in shape and is located between the front and rear ends of the support plate 11 and the base 12; it significantly improves the support rigidity, prevents the support plate 11 from bending and deforming under the overturning load, and ensures the reference accuracy of the posture adjustment; the rotating shaft 13 is coaxially inserted inside the fixed cylinder 131, serving as the rotation axis for the overturning action, and can drive the rotating structure and all the components above it to perform pitch and overturning adjustments; the fixed cylinder 131 is laterally inserted and fixed in the shaft hole near the upper end of the support plate 11, providing radial support for the rotating shaft 13; the fixed shaft disc 132 is fixedly installed on the outer protruding end of the rotating shaft 13 and is connected to the drive shaft disc 134 via a transmission belt. The meshing forms a belt drive; the drive shaft 133 is arranged parallel to the rotating shaft 13 and rotatably connected to the outer wall of the support plate 11, used to install the drive shaft disc 134 and transmit power; the drive shaft disc 134 is fixed to the body of the drive shaft 133 and cooperates with the fixed shaft disc 132 to realize belt drive; the belt drive realizes speed reduction and torque increase, and at the same time, the buffering and vibration absorption characteristics of the belt drive improve the smoothness of the flipping process; the drive motor 135 provides power output for the flipping action, and the output end is coaxially connected to the drive shaft 133; the positioning seat 136 is cantilevered and fixed to the outer wall of the support plate 11, used to install and fix the drive motor 135.

[0084] Further improvements include a rotating structure comprising a mounting plate 14, a horizontal plate 15, a rotating seat 16, and a second drive motor 164. The mounting plate 14 is symmetrically fixed at both ends of the top of the horizontal plate 15. The mounting plate 14 is bolted to the inner end of the rotating shaft 13. A mounting seat 165 is fixed between the side of the second drive motor 164 and the bottom of the horizontal plate 15. The output end of the second drive motor 164 passes upward through the horizontal plate 15 and is connected to the rotating seat 16 for transmission.

[0085] Mounting plate 14 is vertically fixed to the top of both ends of horizontal plate 15 and is fastened to the inner end of rotating shaft 13 by bolts, so that horizontal plate 15 and rotating shaft 13 rotate synchronously. Horizontal plate 15 is a transverse load-bearing plate and serves as the load-bearing base of the rotating structure, supporting rotating seat 16 and all working parts above it. Rotating seat 16 supports all working parts above it and can rotate 360° continuously around the vertical axis. Drive motor 164 provides power output for the rotation action, and its output shaft is connected to rotating seat 16. Mounting base 165 is fixed to the bottom center of horizontal plate 15 and is used to install and fix drive motor 164.

[0086] In a further improvement, an end plate 161 is fixedly distributed on the outer side wall of the rotating seat 16, and a positioning cylinder 162 is fixedly provided at the bottom of the end plate 161. A rolling ball 163 is embedded in and movably connected to the bottom of the positioning cylinder 162.

[0087] One of the support plates 11 has an arc-shaped limiting groove 172 on its inner side. A connecting rod 17 is fixed on one side of the horizontal plate 15. The outer end of the connecting rod 17 is rotatably connected to a sliding bearing 171. The sliding bearing 171 slides and rotates within the limiting groove 172.

[0088] End plates 161 are circumferentially distributed on the outer wall of the rotating seat 16 for mounting and fixing positioning cylinders 162. Positioning cylinders 162 are vertically fixed to the bottom of end plates 161, with embedded rolling balls 163 providing a mounting carrier for the rolling support. The rolling balls 163 are embedded in the bottom of the positioning cylinders 162, with their bottoms abutting against the upper surface of the horizontal plate 15. This forms a multi-point rolling support structure, effectively distributing the axial load of the rotating seat 16, reducing rotational friction resistance, and preventing rotational jamming under heavy loads. The adapter rod 17 is laterally fixed to the corresponding side of the horizontal plate 15, with its outer end mounted... The sliding bearing 171, in conjunction with the limiting groove 172, achieves flipping guidance and limiting; the sliding bearing 171 is installed on the outer end of the adapter rod 17 and embedded in the limiting groove 172 to form a rolling fit; reducing the flipping adjustment resistance and improving the smoothness of the flipping action; the limiting groove 172 is opened on the inner side of the single-sided support plate 11, is arc-shaped and its center coincides with the axis of the rotating shaft 13; limiting the maximum flipping angle range to prevent over-flipping from causing equipment collision; forming an auxiliary support point on the outer side of the horizontal plate 15 to counteract the off-center load torque during the flipping process.

[0089] In a further improvement, the clamping drive mechanism 2 includes a support 21, a fixed plate 22, a drive gear 23, a drive motor 231, a fixed gear 24, a positioning gear plate 25, and a connecting plate 29. The support 21 is installed at both ends of the bottom of the fixed plate 22 and at the upper center of the rotating seat 16. The drive motor 231 is fixed to the lower end of the fixed plate 22. The drive gear 23 is rotatably connected to the output end of the drive motor 231, and the drive gear 23 is meshed with the fixed gear 24. The fixed gear 24 is meshed with the inner end of the positioning gear 25 and is rotatably connected to the middle of the fixed plate 22. An extension plate 28 is fixedly provided at the upper end of the fixed gear 24 and the positioning gear 25. A movable rod 26 is connected through the inner end of the fixed gear 24 and the positioning gear 25. A connecting plate 29 is movably connected between the movable rod 26 and the upper end of the extension plate 28. Movable rods 27 are movably connected to the front and rear of the upper end of the fixed plate 22. Movable rods 27 are movably connected to the upper end of the connecting plate 29.

[0090] Supports 21 are symmetrically arranged at both ends of the bottom of the fixed plate 22, and the bottom is fastened to the upper end face of the rotating seat 16, thus mounting the entire clamping drive mechanism 2 above the rotating platform. The fixed plate 22 serves as the mounting base for the clamping drive mechanism 2, bearing all transmission components such as gears and connecting rods. The drive motor 231 is inverted and fixed to the lower end face of the fixed plate 22, providing power output for the clamping action. The drive gear 23 is mounted on the output shaft of the drive motor 231 and meshes externally with the fixed gear 24 to transmit power and achieve first-stage reduction. The fixed gear 24 is rotatably connected to the middle of the fixed plate 22, meshing externally with the drive gear 23 and internally with the positioning gear disk 25, forming the intermediate stage of the second-stage gear reduction transmission. The positioning gear disk 25 is rotatably connected to the middle of the fixed plate 22 and meshes internally with the fixed gear 24, forming the second-stage gear reduction transmission. The output stage is dynamic; while reducing the transmission space, it significantly increases the output torque, ensuring the clamping force of large-sized workpieces; the extension plate 28 is fixed to the upper surface of the fixed gear 24 and the positioning gear plate 25 respectively, and rotates synchronously with the gear / gear plate, and is used to hinge the movable rod 26; the inner end of the movable rod 26 is hinged to the inner end of the extension plate 28, and the outer end is hinged to the connecting plate 29; the rotational motion of the gear is converted into the horizontal translational motion of the connecting plate 29; the inner end of the movable rod 27 is hinged to the front and rear sides of the upper end of the fixed plate 22, and the outer end is hinged to the side of the connecting plate 29; together with the movable rod 26 and the connecting plate 29, it forms a parallelogram linkage guide mechanism to ensure the stability of the translational motion of the connecting plate 29; the connecting plate 29 serves as the output end of the clamping drive mechanism 2, driving the upper extension positioning mechanism 3 to perform horizontal translation, thereby realizing the adjustment of the clamping width.

[0091] Further improvements include an extended positioning mechanism 3 comprising a support column 31, a movable plate 33, a clamping positioning plate 34, a clamping positioning plate 35, a rotating frame 36, and an electric push rod device 37. The support column 31 is fixed to the upper extension of the connecting plate 29. The clamping positioning plate 34 is fixed to the upper end of the support column 31. The rotating frame 36 is installed on the upper and lower ends of the clamping positioning plate 34 on both sides. The electric push rod device 37 is fixed inside the rotating frame 36. The outer end of the electric push rod device 37 is connected to a push rod 371. The outer end of the push rod 371 is fixed with a support plate 372. The clamping positioning plate 35 is fixed to the inner end of the support plate 372. The inner ends of the clamping positioning plate 34 and the clamping positioning plate 35 are both rubber protrusion structures. The electric push rod device 37 is electrically connected downward to a power supply base 376.

[0092] A protruding plate 373 is fixedly provided at the outer end of the support plate 372, a limiting rod 374 is fixedly provided at the outer end of the protruding plate 373, a limiting cylinder 375 is fixedly provided at the outer end of the rotating frame 36, and the limiting rod 374 is slidably connected to the inside of the limiting cylinder 375.

[0093] The support column 31 is vertically fixed to the upper extension of the connecting plate 29 and moves synchronously with the connecting plate 29, serving as the installation support for components such as the clamping positioning plate 34. The clamping positioning plate 34 is horizontally fixed to the upper end of the support column 31, forming a fixed clamping side and serving as a clamping reference surface. The rotating frame 36 is installed on the upper and lower ends of both sides of the clamping positioning plate 34 to install and fix the electric push rod device 37. The electric push rod device 37 is horizontally fixed inside the rotating frame 36, providing secondary power for the clamping action and realizing secondary fine adjustment and reliable locking of the clamping force. The push rod 371 is connected to the output end of the electric push rod device 37, driving the support plate 372 and the clamping positioning plate 35 to move horizontally. The support plate 372 is vertically fixed to the outer end of the push rod 371, and the clamping positioning plate 35 is fixed on the inner side, serving as the installation carrier for the movable clamping side. The clamping positioning plate 35 is fixed. Inside the support plate 372, a movable clamping structure is formed, which cooperates with the clamping positioning plate 34 to clamp the workpiece. A rubber protrusion structure is set on the clamping working surface of the clamping positioning plate 34 and the clamping positioning plate 35. This increases the clamping friction to prevent the workpiece from slipping and avoids damage to the coating on the steel structure surface through flexible contact. The power supply base 376 provides unified power to the electric push rod devices 37 on both sides, ensuring that the two move synchronously. The protrusion plate 373 is fixed to the outer end of the support plate 372 and is used to install the limiting rod 374. The limiting rod 374 is laterally fixed to the outer end of the protrusion plate 373 and coaxially passes through the limiting cylinder 375. This provides precise radial constraint for the translation of the clamping positioning plate 35 and avoids swaying during clamping. The limiting cylinder 375 is fixed to the outer end of the rotary frame 36 and forms a sliding guide structure with the limiting rod 374. This improves the clamping centering and accuracy.

[0094] Further improved, a base plate 32 is fixedly provided at the bottom of the clamping and positioning plate 35, and a pad 321 is fixedly provided at the outer end of the base plate 32;

[0095] The movable plate 33 is movably connected to the upper part of the inside of the support column 31 or the base plate 32. The upper part of the inner end of the movable plate 33 is fixedly provided with a support 331, and the bottom of the outer end of the movable plate 33 is fixedly provided with a baffle 332. The inner end of the baffle 332 is fixedly provided with a telescopic rod 333. The inner end of the telescopic rod 333 is connected to an electric telescopic device 334, which is fixedly provided at the support column 31 or the base plate 321.

[0096] The base plate 32 is horizontally fixed to the bottom of the clamping and positioning plate 35, and the outer end is fixed with a pad 321, which serves as the mounting carrier for the movable plate 33 and the electric telescopic device 334; the pad 321 is fixed to the outer end of the base plate 32 for mounting and fixing the electric telescopic device 334; the movable plate 33 is horizontally penetrating and slidably connected to the upper part of the support column 31 or the base plate 32, and can extend or retract laterally to support the support component 331; the support 331 is fixed above the inner end of the movable plate 33, and can form a lifting support from the bottom of the workpiece; baffle 332. The telescopic rod 333 is vertically fixed to the bottom of the outer end of the movable plate 33 and is used to connect the telescopic rod 333 to drive the movable plate 33 to move horizontally. The outer end of the telescopic rod 333 is fixed to the baffle 332, and the inner end is connected to the electric telescopic device 334 to transmit the telescopic power. The electric telescopic device 334 is fixed to the support column 31 or the pad 321 to drive the telescopic rod 333 to extend and retract, thereby driving the movable plate 33 to move laterally. Together with the clamping plates on both sides, a three-point positioning structure of "double-sided clamping and bottom lifting" is formed to improve the anti-overturning ability and stability of the workpiece clamping.

[0097] Further improvements include a laser detection mechanism 4 comprising a fixed frame 41, a top plate 42, an adjusting plate 44, an electric push rod device 444, a laser emitter 45, and a laser receiver 46. The fixed frame 41 is fixed above the side of the support plate 11, and the top plate 42 is fixed at the middle of the upper end of the fixed frame 41. The laser emitter 45 is connected to the bottom left end of the top plate 42, and the laser receiver 46 is connected to the bottom right end of the top plate 42. A fault indicator lamp 47 is electrically connected through the upper end of the laser emitter 45, and a detection display screen 43 is electrically connected to the upper end of the top plate 42.

[0098] The mounting bracket 41 has an L-shaped vertical structure, with its bottom fixed to the upper side of the support plate 11 and its top extending horizontally towards the workpiece side, serving as the mounting support for the top plate 42 and the detection components. The top plate 42 is horizontally fixed to the middle of the upper end of the two mounting brackets 41, spanning directly above the workpiece detection position, serving as the mounting carrier for the laser detection element. The laser emitting head 45 is horizontally distributed at the bottom left end of the top plate 42, emitting a laser beam, which, together with the laser receiving head 46, forms multiple parallel laser detection light curtains. The laser receiving head 46 is correspondingly distributed at the bottom right end of the top plate 42, receiving the laser beam. When the workpiece deformation blocks the light path at the corresponding position, the light signal changes, thereby accurately identifying the position, length, and amount of deformation. The fault indicator lamp 47 is electrically connected to the upper end of the laser emitting head 45, providing real-time feedback on the working status of the laser head and providing an immediate alarm when a fault occurs. The detection display screen 43 is set at the upper end of the top plate 42, intuitively displaying the detection data, deformation contour, and result judgment.

[0099] Specifically, a laser level detector 411 is electrically connected to the inner side wall of the fixing frame 41 near the upper end;

[0100] Electric push rod device 2 444 is fixed at the upper rear of the top plate 42. The output end of electric push rod device 2 444 is connected to push rod 2 445. Adjustment plate 44 is fixed at the outer end of push rod 2 445. The lower inner end of adjustment plate 44 is electrically connected to laser level detector 2 441.

[0101] A protruding plate 442 is fixedly provided on the upper side of the adjusting plate 44, a limiting cylinder 446 is fixedly provided on the side of the electric push rod device 444, a limiting rod 443 is fixedly provided at the front end of the protruding plate 442, and the limiting rod 443 is slidably connected to the inside of the limiting cylinder 446.

[0102] A laser level detector 411 is installed near the upper end of the inner wall of the fixed frame 41, forming a fixed horizontal reference point for verifying the overall installation levelness of the equipment. An electric push rod device 444 is installed behind the upper end of the top plate 42, driving the adjusting plate 44 to move laterally, thus moving the laser level detector 441. A push rod 445 is connected to the output end of the electric push rod device 444, driving the adjusting plate 44 to move horizontally. The adjusting plate 44 is fixed to the outer end of the push rod 445, and the laser level detector 441 is installed on its lower inner end, serving as the mounting carrier for the moving horizontal reference. The laser level detector 441 is installed on the lower inner end of the adjusting plate 44, and can... Horizontal detection is performed at different locations to form a moving horizontal reference. In conjunction with the laser level detector 411, multi-point horizontal reference verification is achieved, offsetting reference offsets caused by equipment installation errors and changes in rotation angle, ensuring detection accuracy. A second convex plate 442 is fixed to the upper side of the adjusting plate 44 and is used to install a second limiting rod 443. The second limiting rod 443 is fixed to the front end of the second convex plate 442 and slides through the second limiting cylinder 446, providing guiding constraints for the translation of the adjusting plate 44. The second limiting cylinder 446 is fixed to the side of the electric push rod device 444, forming a sliding guide structure with the second limiting rod 443, ensuring the stability and accuracy of the translation of the adjusting plate 44.

[0103] Working principle:

[0104] Step 1: Workpiece clamping and positioning

[0105] Initial workpiece placement: Place the steel structure workpiece to be inspected between the two clamping and positioning plates 34, with the bottom initially corresponding to the area above the support 331.

[0106] First-level coarse adjustment of clamping width: Start the drive motor 231, and the power is transmitted through the two-stage reduction transmission of drive gear 23, fixed gear 24 and positioning gear plate 25, which drives the extension plate 28 to rotate synchronously in the opposite direction; through the parallelogram linkage mechanism composed of movable rod 26, movable rod 27 and connecting plate 29, the two connecting plates 29 are pushed to move horizontally towards each other, which drives the support column 31 and clamping positioning plate 34 to move closer together, completing the first-level coarse adjustment of clamping width to adapt to the workpiece cross-sectional size.

[0107] Two-stage fine adjustment of clamping force: The power supply base 376 provides unified power to the electric push rod devices 37 on both sides, driving the push rod 371 to extend and push the support plate 372 and the clamping positioning plate 35 to move and clamp the workpiece; the limiting rod 374 slides and guides along the limiting cylinder 375 to avoid clamping deviation; the rubber protrusion structure on the clamping working surface increases the friction force and protects the coating on the workpiece surface.

[0108] Bottom lifting and locking: Activate the electric telescopic device 334 to drive the telescopic rod 333 to extend, push the movable plate 33 to extend inward along the support 31 / bottom plate 32, and the support 331 abuts against the bottom of the workpiece, forming a three-point positioning structure of "double-sided clamping and bottom lifting" together with the clamping plates on both sides to fix the workpiece.

[0109] Step 2: Workpiece spatial pose adjustment

[0110] Pitch and tilt adjustment: Start the drive motor 135, which drives the rotating shaft 13 to rotate within the fixed cylinder 131 via the drive shaft 133, drive shaft disc 134, transmission belt, and fixed shaft disc 132. The mounting plate 14 drives the horizontal plate 15 and all the components above it to pitch and tilt around the axis of the rotating shaft 13. The sliding bearing 171 at the end of the adapter rod 17 rolls along the limiting groove 172 to limit and assist in the support, thus adjusting the pitch angle of the workpiece.

[0111] Horizontal rotation adjustment: Start drive motor 164 to drive rotating seat 16 to rotate continuously 360° around the vertical axis; the end plate 161, positioning cylinder 162 and rolling ball 163 of rotating seat 16 form multi-point rolling support, share the axial load, reduce rotational friction, drive the upper clamping mechanism and workpiece to rotate horizontally and circumferentially, so that the surface to be inspected is aligned with the laser inspection light curtain.

[0112] Step 3: Calibration of the testing benchmark

[0113] Fixed reference verification: The overall installation level of the equipment is checked by the laser level detector 411 inside the fixed frame 41 to establish a fixed horizontal reference point.

[0114] Moving reference compensation: Start the electric push rod device 444, drive the push rod 445 to move the adjusting plate 44 laterally, and the limiting rod 443 slides along the limiting cylinder 446; the laser level detector 441 detects at different positions with the adjusting plate 44 to form a moving level reference; in conjunction with the fixed reference, multi-point verification is realized to offset the reference offset caused by equipment installation error and change of flip angle, and to calibrate the detection reference.

[0115] Step 4: Laser Deformation Detection

[0116] Light curtain scanning detection: The laser emitter 45 at the bottom of the top plate 42 emits multiple parallel lasers, which are received by the laser receiver 46, forming a parallel detection light curtain covering the workpiece; when the workpiece is bent, twisted or otherwise deformed, the deformed part blocks the corresponding optical path, and the light signal of the laser receiver 46 changes, thereby accurately identifying the position, length and amount of deformation.

[0117] Status monitoring and data output: The fault indicator lamp 47 provides real-time feedback on the working status of the laser emitter 45 and issues an immediate alarm when a fault occurs; the detection display screen 43 intuitively displays the detection data, deformation profile, and result judgment.

[0118] Step 5: Comprehensive Inspection and Final Steps

[0119] By linking the flipping and rotating structures, different inspection surfaces of the workpiece are switched, and the benchmark calibration and laser inspection process is repeated to complete all-round inspection of all surfaces of the workpiece without blind spots. After the inspection is completed, the bottom support is retracted and the clamping mechanism is released in sequence to remove the workpiece.

[0120] Summary: The entire machine forms a complete chain linkage system of "bearing, flipping, rotating, clamping, lifting and testing";

[0121] Position and posture adjustment linkage: The flipping structure and the rotating structure form a two-dimensional rotation structure. The flipping structure realizes the workpiece pitch angle adjustment, and the rotating structure realizes the workpiece horizontal circumferential adjustment. The two work together to make any surface of the workpiece to be inspected aligned with the laser inspection light curtain, realizing all-round inspection without blind spots, without the need for manual repeated clamping of the workpiece.

[0122] Clamping and positioning linkage: The gear and linkage mechanism of the clamping drive mechanism 2 realizes the first-level coarse adjustment of the clamping width, the electric push rod of the extension positioning mechanism 3 realizes the second-level fine adjustment of the clamping force, and the telescopic lifting of the bottom movable plate 33 realizes the vertical auxiliary positioning. The three-level action linkage is adapted to steel structure workpieces of different sizes and weights, taking into account both adaptability and clamping stability.

[0123] Detection and calibration linkage: The dual horizontal detector of the laser detection mechanism 4 is linked with the flipping and rotating mechanism. When the flipping angle is adjusted, the workpiece posture changes. The detection benchmark can be calibrated in real time by moving the laser horizontal detector 441, and the detection error caused by the angle offset can be automatically compensated to ensure the consistency of detection accuracy under different postures.

[0124] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended technical solutions rather than the foregoing description, and thus all changes falling within the meaning and scope of equivalent elements of the technical solutions are intended to be included within the present invention.

[0125] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deformation detection device for building steel structures, comprising a flipping and rotating adjustment support mechanism (1), a clamping drive mechanism (2), an extension positioning mechanism (3), and a laser detection mechanism (4), characterized in that: The flip-rotation adjustment support mechanism (1) includes a base (12), a support plate (11) symmetrically fixed on both sides of the upper end of the base (12), a flip structure and a rotation structure. The flip structure passes through the upper end of the support plate (11), and the rotation structure is installed on the inner end of the flip structure. The flip structure is used to drive the rotation structure and the above components to flip and adjust, and the rotation structure is used to drive the components above it to rotate and adjust. The clamping drive mechanism (2) is installed on the upper end of the rotating structure, and the extension positioning mechanism (3) is fixedly installed on the upper end of the clamping drive mechanism (2). The clamping drive mechanism (2) is used to drive the extension positioning mechanism (3) to clamp and position the building steel structure. The laser detection mechanism (4) is fixedly installed on both sides of the upper end of the flip-rotation adjustment support mechanism (1) and extends above the extension positioning mechanism (3) to detect the deformation of the building steel structure held by the extension positioning mechanism (3).

2. The deformation detection equipment for building steel structures according to claim 1, characterized in that: A reinforcing plate (111) is fixed between the front and rear ends of the support plate (11) and the base (12). The flipping structure includes a rotating shaft (13), a fixed cylinder (131), a fixed shaft disc (132), a drive shaft (133), a drive shaft disc (134), and a drive motor (135). The fixed cylinder (131) is fixed through and near the upper end of the support plate (11). The rotating shaft (13) is rotatably connected through and inside the fixed cylinder (131). The fixed shaft disc (132) is fixed to the outside of one end of the rotating shaft (13). The drive shaft (133) is rotatably connected to the outer wall of the support plate (11). The drive shaft disk (134) is fixed to the outside of the drive shaft rod (133), and the drive shaft disk (134) and the fixed shaft disk (132) are connected by a transmission belt. The output end of the drive motor (135) is connected to the outer end of the drive shaft (133), and a positioning seat (136) is fixed between the bottom of the drive motor (135) and the outer side wall of the support plate (11).

3. The deformation detection equipment for building steel structures according to claim 2, characterized in that: The rotating structure includes a mounting plate (14), a horizontal plate (15), a rotating seat (16), and a second drive motor (164). The mounting plate (14) is symmetrically fixed at both ends of the top of the horizontal plate (15). The mounting plate (14) is bolted to the inner end of the rotating shaft (13). The side of the second drive motor (164) is fixed with a mounting seat (165) between it and the bottom of the horizontal plate (15). The output end of the second drive motor (164) passes through the horizontal plate (15) upward and is connected to the rotating seat (16) in a transmission connection.

4. The deformation detection equipment for building steel structures according to claim 3, characterized in that: The outer side wall of the rotating seat (16) is fixedly provided with end plates (161), and the bottom of the end plates (161) is fixedly provided with positioning cylinders (162). The bottom of the positioning cylinders (162) is inlaid with and movably connected with rolling balls (163). One of the support plates (11) has an arc-shaped limiting groove (172) on its inner side. A connecting rod (17) is fixed on one side of the horizontal plate (15). A sliding bearing (171) is rotatably connected to the outer end of the connecting rod (17). The sliding bearing (171) slides and rotates within the limiting groove (172).

5. The deformation detection equipment for building steel structures according to claim 1, characterized in that: The clamping drive mechanism (2) includes a support (21), a fixed plate (22), a drive gear (23), a drive motor (231), a fixed gear (24), a positioning gear plate (25), and a connecting plate (29). The support (21) is installed at both ends of the bottom of the fixed plate (22). The drive motor (231) is fixed to the lower end of the fixed plate (22). The drive gear (23) is rotatably connected to the output end of the drive motor (231). The drive gear (23) meshes with the fixed gear (24). The fixed gear (24) meshes with the positioning gear plate (29). The inner ends of the disc (25) are meshed and connected, and are rotatably connected to the middle of the fixed plate (22). The upper end of the fixed gear (24) and the positioning gear disc (25) is fixed with an extension plate (28). The inner ends of the fixed gear (24) and the positioning gear disc (25) are connected by a movable rod (26). The connecting plate (29) is movably connected between the movable rod (26) and the upper end of the extension plate (28). The upper end of the fixed plate (22) is movably connected to the front and rear of the movable rod (27). The movable rod (27) is movably connected to the upper end of the connecting plate (29).

6. The deformation detection equipment for building steel structures according to claim 1, characterized in that: The extended positioning mechanism (3) includes a support column (31), a movable plate (33), a clamping positioning plate one (34), a clamping positioning plate two (35), a rotating frame (36), and an electric push rod device one (37). The clamping positioning plate one (34) is fixed at the upper end of the support column (31). The rotating frame (36) is installed on the upper and lower ends of the clamping positioning plate one (34) on both sides. The electric push rod device one (37) is fixed inside the rotating frame (36). The outer end of the electric push rod device one (37) is connected to a push rod one (371). The outer end of the push rod one (371) is fixed with a support plate (372). The clamping positioning plate two (35) is fixed at the inner end of the support plate (372). The inner ends of the clamping positioning plate one (34) and the clamping positioning plate two (35) are both rubber protrusion structures. The electric push rod device one (37) is electrically connected downward to a power supply base (376). The outer end of the support plate (372) is fixedly provided with a protruding plate (373), the outer end of the protruding plate (373) is fixedly provided with a limiting rod (374), the outer end of the rotating frame (36) is fixedly provided with a limiting cylinder (375), and the limiting rod (374) is slidably connected to the inside of the limiting cylinder (375).

7. The deformation detection equipment for building steel structures according to claim 6, characterized in that: The bottom of the clamping and positioning plate 2 (35) is fixedly provided with a base plate (32), and the outer end of the base plate (32) is fixedly provided with a pad plate (321). The movable plate (33) is movably connected to the upper inner end of the support column (31) or the base plate (32). A support (331) is fixed above the inner end of the movable plate (33). A baffle (332) is fixed at the bottom of the outer end of the movable plate (33). A telescopic rod (333) is fixed at the inner end of the baffle (332). An electric telescopic device (334) is connected to the inner end of the telescopic rod (333). The electric telescopic device (334) is fixed at the support column (31) or the base plate (321).

8. The deformation detection equipment for building steel structures according to claim 1, characterized in that: The laser detection mechanism (4) includes a fixed frame (41), a top plate (42), an adjustment plate (44), an electric push rod device (444), a laser emitter (45), and a laser receiver (46). The fixed frame (41) is fixed above the side of the support plate (11). The top plate (42) is fixed at the middle of the upper end of the fixed frame (41). The laser emitter (45) is connected to the bottom left end of the top plate (42). The laser receiver (46) is connected to the bottom right end of the top plate (42). The upper end of the laser emitter (45) is electrically connected to a fault indicator lamp (47). The upper end of the top plate (42) is electrically connected to a detection display screen (43).

9. The deformation detection equipment for building steel structures according to claim 8, characterized in that: A laser level detector (411) is electrically connected to the inner side wall of the fixed frame (41) near the upper end. The electric push rod device 2 (444) is fixed at the upper rear of the top plate (42). The output end of the electric push rod device 2 (444) is connected to the push rod 2 (445). The adjustment plate (44) is fixed at the outer end of the push rod 2 (445). The lower inner end of the adjustment plate (44) is electrically connected to the laser level detector 2 (441). The upper side of the adjusting plate (44) is fixedly provided with a second protruding plate (442), the side of the electric push rod device (444) is fixedly provided with a second limiting cylinder (446), the front end of the second protruding plate (442) is fixedly provided with a second limiting rod (443), and the second limiting rod (443) is slidably connected to the inside of the second limiting cylinder (446).

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