A kind of centripetal joint bearing rear mounting device and method of bifurcated column and truss connection

Abstract

The application belongs to the field of steel structure construction, and discloses a centripetal knuckle bearing post-mounting device and method connected with a forked column and a truss, which comprises: the device comprises: a rack, a fixed locking assembly, an adjusting platform, a spherical centering seat, a pre-pressing centering assembly and a detection control unit; when the application is used, the tool is quickly and stably clamped and pre-mounted on the steel structure forked column through the rack cooperating with the fixed locking assembly, without the need of welding, punching and reforming the steel structure body, and being suitable for different specifications of forked columns and on-site construction conditions; three-dimensional fine displacement fine adjustment of the bearing in the horizontal, vertical and vertical directions is realized according to a three-axis displacement adjusting module, the alignment deviation caused by the superposition of on-site construction deformation and assembly tolerance is made up, the centripetal knuckle bearing pressure self-adaptive posture centering correction is realized by matching the spherical centering seat, and the pre-pressing centering assembly and the limiting clamping assembly are matched to double-protect the bearing assembly process from loosening, deviation and extrusion damage.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology, and in particular to a post-installation device and method for a radial joint bearing connecting a bifurcated column and a truss. Background Technology

[0002] In modern large-span steel structure buildings and truss bifurcated column construction projects, radial joint bearings, as the core load-bearing hinged connection between the steel structure bifurcated column and the truss, directly bear the vertical load, horizontal shear force and deformation adaptation angular stress of the structure. The coaxiality of its installation and the accuracy of its installation posture directly determine the overall stress stability of the steel structure, the structural deformation adaptation ability and the safety performance of the building in the later stage.

[0003] Currently, the industry mostly uses either pre-embedded or post-assembly methods for installing radial joint bearings connecting steel structure bifurcated columns and trusses. Pre-embedded methods are highly susceptible to the combined effects of steel structure welding deformation, column pouring settlement, and on-site assembly tolerances. This results in large coaxiality deviations between the bearing's pre-drilled mounting holes and the steel structure's lug holes, leading to bearing tilting and eccentric stress after assembly. Long-term use can easily cause safety hazards such as bearing wear, structural stress concentration, and truss deformation and cracking. Traditional post-assembly manual alignment relies entirely on the experience of construction workers and visual observation for alignment. There are no specialized tooling locking structures, no precise three-dimensional displacement fine-tuning methods, and no professional sensor detection and algorithm correction closed-loop control process. This results in poor alignment accuracy, time-consuming and labor-intensive manual adjustments, low construction efficiency, and inconsistent assembly quality. Summary of the Invention

[0004] The present invention provides a post-assembly device and method for connecting a bifurcated column to a truss radial joint bearing, which solves the technical problems of existing post-assembly of radial joint bearings, such as lack of special tooling, reliance on manual experience for alignment, poor assembly coaxiality, low posture alignment accuracy, and low construction efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, it provides a post-installation device for a radial joint bearing connecting a bifurcated column and a truss. This device includes: a frame, a fixing and locking assembly, an adjusting platform, a spherical self-aligning seat, a pre-load self-aligning assembly, and a detection and control unit. The fixing and locking assembly is located on the lower side of the frame and is used to lock the entire frame to a preset installation position on the outside of the steel structure bifurcated column. The adjusting platform is located on the inner side of the frame and includes a three-axis displacement adjusting module, which is used to achieve fine-tuning of the horizontal, vertical, and three-dimensional spatial positions. The spherical self-aligning seat is fixedly installed on the upper movable platform of the three-axis displacement adjustment module. The spherical self-aligning seat is used to support and place the radial spherical bearing and adaptively fit and align itself. The pre-pressure self-aligning component is vertically installed on the rear side of the frame. The pre-pressure self-aligning component is used to apply pre-pressure to the upper end face of the radial spherical bearing, so that the radial spherical bearing fits with the spherical self-aligning seat to complete the posture correction. The detection and control unit is fixedly assembled on the inner wall of the frame. The detection and control unit is electrically connected to the three-axis displacement adjustment module and is used to detect the bearing installation position deviation and posture tilt angle deviation in real time, and control the three-axis displacement adjustment module to complete automatic alignment correction and adjustment.

[0006] As a further improvement of the present invention: the fixing and locking assembly includes a bidirectional lead screw, a first handle and two fixing plates; the bidirectional lead screw is rotatably disposed on the inner wall of both sides of the frame, the first handle is fixedly disposed on the end of the bidirectional lead screw, and the two fixing plates are symmetrically threaded onto the outer surface of the bidirectional lead screw. Rotating the first handle drives the bidirectional lead screw to rotate, thereby driving the two sets of fixing plates to move relative to each other to achieve clamping and fixing.

[0007] As a further improvement of the present invention: the adjustment platform further includes a connecting plate and a support plate; the two connecting plates are respectively fixed on opposite sides of the two fixed plates, the two connecting plates are slidably embedded in the inner wall of the support plate, and a three-axis displacement adjustment module is fixedly installed on the top of the support plate.

[0008] As a further improvement of the present invention: the device further includes a limiting clamping assembly, which includes a sliding plate, a transmission rod, a clamping ring, and an anti-slip damping pad; two sliding plates are slidably disposed on both sides of the three-axis displacement adjustment module, the sliding plates are connected to the clamping ring through the transmission rod, and the inner wall of the clamping ring is fixedly disposed on one side of the anti-slip damping pad for flexibly clamping and limiting the outer ring of the radial joint bearing.

[0009] As a further improvement of the present invention: the pre-pressure self-aligning assembly includes a threaded rod, a second handle, and a pressure plate; the threaded rod is rotatably disposed on the rear side of the frame, the pressure plate is threadedly sleeved on the outer surface of the threaded rod, the second handle is fixed on the upper end of the pressure plate, and rotating the second handle drives the pressure plate to rise and fall vertically to achieve the downward pressure pre-pressure limit.

[0010] As a further improvement of the present invention: the detection and control unit includes an inclination sensor, a laser position detection probe, and a control panel; the inclination sensor is installed on the outside of the spherical self-aligning seat, the laser position detection probe is installed on the inside of the frame column and aligned with the bearing center hole, and the control panel is electrically connected to the inclination sensor, the laser position detection probe, and the three-axis displacement adjustment module respectively, for data acquisition and adjustment control.

[0011] On the other hand, a method for post-installing and positioning a radial spherical bearing connecting a bifurcated column and a truss is provided. According to the aforementioned post-installation device for a radial spherical bearing connecting a bifurcated column and a truss, the method includes the following steps: S1. Tooling clamping and fixing: Control the action of the fixing and locking components to clamp and fix the entire frame to the preset installation position of the steel structure bifurcation column; S2, Bearing Placement Limit: Place the radial spherical plain bearing on the spherical self-aligning seat, and use the limit clamping assembly to clamp and limit the outer side of the radial spherical plain bearing; S3, Bearing preload fit: Control the preload self-aligning component to press down on the upper end of the radial joint bearing, so that the radial joint bearing and the spherical self-aligning seat fit together adaptively, and complete the initial attitude self-alignment; S4. Multi-source deviation data acquisition: The attitude tilt angle data and bearing bore coaxiality position deviation data of the radial joint bearing are acquired in real time through the detection and control unit. S5, Pose Coupling Iterative Correction Calculation: The control unit preprocesses the acquired multi-source detection data and combines it with the preset pose coupling hierarchical iterative correction logic to obtain the triaxial displacement compensation amount. S6. Three-axis precise alignment adjustment: The three-axis displacement adjustment module performs three-dimensional fine adjustment based on the displacement compensation amount calculated, until the coaxiality deviation between the bearing hole and the steel structure ear plate mounting hole reaches the preset accuracy threshold. S7. Bearing assembly and tooling disassembly: After the pin is inserted into the aligned bearing hole and ear plate hole, the bearing assembly is completed. Then, the preload self-aligning assembly, the limit clamping assembly and the fixing locking assembly are released in sequence, and the tooling is disassembled and removed as a whole.

[0012] As a further improvement of the present invention: in step S4, the tilt sensor collects the two-dimensional tilt angle data of the bearing in real time, and the laser position detection probe collects the coaxial deviation data of the hole position in real time in a non-contact manner. The dual sensor data are collected in linkage to realize the synchronous detection of dual deviations of position and angle, and ensure that the alignment adjustment data is comprehensive and accurate. In step S7, after the bearing is precisely aligned and assembled, the upper pressure plate pre-pressure limit is removed first, then the auxiliary clamping structure of the clamping rings on both sides is loosened, and finally the bidirectional lead screw is rotated in the opposite direction to loosen the entire fixture. The disassembly sequence is from top to bottom and from inside to outside to avoid touching the installed bearing during the disassembly process and causing alignment misalignment, thus ensuring the assembly accuracy.

[0013] As a further improvement of the present invention: In step S5, the pose coupling hierarchical iterative correction logic is configured with a coaxiality correction calculation formula, the coaxiality correction calculation formula being:

[0015] In the formula: This is the correction amount for the closed-loop coaxiality compensation in the nth iteration. 、\Delta Y_{n}、 These are the measured values ​​of the original spatial position deviation of the three axes. This represents the two-dimensional tilt angle offset of the bearing. This refers to the three-axis dynamic matching correction coefficient. Here is the attitude coupling compensation constant. Adjust the weight coefficients to ensure iterative convergence.

[0016] As a further improvement of the present invention: step S5 includes the following sub-steps: S51. Multi-source sensor data fusion preprocessing: The collected tilt angle data and laser position deviation data are filtered and denoised, and abnormal data are removed to eliminate the interference error of field environmental vibration. S52, Attitude and position coupling hierarchical calculation: Substitute the pre-processed position deviation and attitude tilt angle data into the correction calculation formula to calculate the initial coaxiality compensation amount and allocate the adjustment command in a hierarchical manner. S53. Closed-loop iterative convergence fine-tuning: After the initial adjustment, the deviation data is collected a second time and compared with the accuracy threshold. If the threshold is not met, the iterative weight coefficient is reduced and the correction operation is repeated until the deviation converges to the preset accuracy range.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: This invention enables rapid and stable clamping of pre-assembled fixtures onto steel bifurcated columns using a frame and a fixing and locking assembly. It eliminates the need for welding, drilling, or modification of the steel structure, adapting to different specifications of bifurcated columns in various on-site construction conditions. A three-axis displacement adjustment module allows for precise three-dimensional displacement adjustment of the bearing in the lateral, longitudinal, and vertical directions, compensating for alignment deviations caused by on-site deformation and assembly tolerances. A spherical self-aligning seat enables adaptive posture correction of the radial joint bearing under pressure. The pre-pressure self-aligning assembly and the limiting clamping assembly provide dual protection against loosening, misalignment, and compression damage during bearing assembly. Simultaneously, a dual-sensor linkage system using an inclination sensor and a laser position detection probe collects multi-source deviation data on bearing posture, inclination angle, and hole coaxiality. Combined with a unique position-coupling hierarchical iterative correction calculation formula and closed-loop iterative fine-tuning logic, it achieves integrated automatic control of deviation data preprocessing, position-coupling calculation, and precise iterative convergence compensation. This solves the problems of difficult alignment, low assembly accuracy, high labor costs, low construction efficiency, post-assembly force eccentricity, and easy structural deformation and damage associated with traditional bearing post-assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating a scenario where the present invention proposes a post-installation device and method for a radial joint bearing connecting a bifurcated column and a truss.

[0019] Figure 2 This is a side view of a rear-mounted device and method for connecting a bifurcated column to a truss, as proposed in an embodiment of this application.

[0020] Figure 3 This is a side view of an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the interior of the rack in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the support plate in an embodiment of this application.

[0023] Figure 6 This is a flowchart of the positioning method in the embodiments of this application.

[0024] Figure 7 This is a flowchart of the pose coupling iterative correction operation sub-step in an embodiment of this application.

[0025] Legend: 1. Frame; 2. Two-way lead screw; 21. Fixing plate; 22. First handle; 3. Connecting plate; 31. Support plate; 32. Three-axis displacement adjustment module; 33. Spherical self-aligning seat; 34. Radial joint bearing; 35. Slide plate; 36. Transmission rod; 37. Clamping ring; 38. Anti-slip damping pad; 4. Tilt sensor; 41. Laser position detection probe; 42. Control panel; 5. Threaded rod; 501. Second handle; 502. Pressure plate. Detailed Implementation

[0026] 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. Example 1

[0027] Please see Figure 1 - Figure 5 This invention provides a post-installation device for a radial joint bearing connecting a bifurcated column and a truss. The device includes: a frame 1, a fixing and locking assembly, an adjustment platform, a spherical self-aligning seat 33, a pre-load self-aligning assembly, and a detection and control unit. The fixing and locking assembly is located on the lower side of the frame 1 and is used to lock and fix the frame 1 as a whole to a preset installation position on the outside of the steel structure bifurcated column. The tooling is pre-installed stably by means of mechanical clamping and locking. It is suitable for different installation conditions of steel structure columns on the construction site. After pre-installation and fixing, the tooling is free from shaking and displacement, providing a stable installation foundation for the subsequent precise alignment and assembly of the bearing. The adjustment platform is located inside the frame 1. The adjustment platform includes a three-axis displacement adjustment module 32. The three-axis displacement adjustment module 32 is used to achieve fine adjustment of the horizontal, vertical and three-dimensional spatial positions. It can complete multi-dimensional fine position compensation adjustment according to the actual deviation between the bearing and the ear plate hole of the steel structure, eliminating the defects of poor accuracy and single adjustment of traditional manual alignment. The spherical self-aligning seat 33 is fixedly installed on the upper movable platform of the three-axis displacement adjustment module 32. The spherical self-aligning seat 33 is used to support and place the radial joint bearing 34 and adaptively fit and align itself. It can cooperate with the bearing pressure to achieve small-angle adaptive deflection correction, automatically adapt to the bearing assembly posture requirements, and offset the initial tilt deviation of the bearing placement. The preload self-aligning assembly is vertically installed at the rear of the frame 1. The preload self-aligning assembly is used to apply preload to the upper end face of the radial spherical bearing 34, so that the radial spherical bearing 34 and the spherical self-aligning seat 33 fit together to complete the posture correction, avoid loosening or displacement during the bearing adjustment process, and ensure the stability of the bearing after posture correction. The detection and control unit is fixedly mounted on the inner wall of the frame 1. The detection and control unit is electrically connected to the three-axis displacement adjustment module 32. It is used to detect the bearing installation position deviation and attitude tilt angle deviation in real time, and control the three-axis displacement adjustment module 32 to complete automatic alignment correction and adjustment.

[0028] Please see Figure 1 - Figure 6In one embodiment, the fixing and locking assembly includes a bidirectional lead screw 2, a first handle 22, and two fixing plates 21. The bidirectional lead screw 2 is rotatably disposed on the inner walls of both sides of the frame 1. The first handle 22 is fixedly disposed on the end of the bidirectional lead screw 2. The two fixing plates 21 are symmetrically threaded onto the outer surface of the bidirectional lead screw 2. Rotating the first handle 22 drives the bidirectional lead screw 2 to rotate, which drives the two sets of fixing plates 21 to move relative to each other to achieve clamping and fixing. The bidirectional lead screw 2 adopts a bidirectional thread structure with positive and negative threads. The internal threads of the two fixing plates 21 rotate in opposite directions. Rotating the first handle 22 drives the bidirectional lead screw 2 to rotate synchronously, which can drive the two sets of fixing plates 21 to move synchronously relative to each other to achieve clamping and fixing or to move away from each other to release the fixture. The clamping force is uniform and symmetrical, the locking and fixing effect is stable, and the disassembly and assembly operations are convenient and efficient.

[0029] Please see Figure 1 - Figure 6 In one embodiment, the adjustment platform further includes a connecting plate 3 and a support plate 31; the two connecting plates 3 are respectively fixed on opposite sides of the two fixed plates 21, and the two connecting plates 3 are slidably embedded in the inner wall of the support plate 31. A three-axis displacement adjustment module 32 is fixedly installed on the top of the support plate 31. During the clamping and fixing process of the fixed plate 21, the connecting plates 3 can be driven to slide and adapt along the inside of the support plate 31. The entire adjustment platform is synchronously aligned and finely adjusted with the tooling locking, with strong structural linkage, and adapts to the position adaptation requirements during the tooling locking and installation process.

[0030] Please see Figure 1 - Figure 6 In one embodiment, the device further includes a limiting clamping assembly, which includes a sliding plate 35, a transmission rod 36, a clamping ring 37, and an anti-slip damping pad 38. Two sliding plates 35 are slidably disposed on both sides of the three-axis displacement adjustment module 32. The sliding plates 35 are connected to the clamping ring 37 through the transmission rod 36. The inner wall of the clamping ring 37 is fixedly disposed on one side of the anti-slip damping pad 38 for flexibly clamping and limiting the outer ring of the radial spherical bearing 34. The anti-slip damping pad 38 is made of a highly elastic and wear-resistant damping material and is used to flexibly clamp and limit the outer ring of the radial spherical bearing 34. It can effectively limit the horizontal displacement and sliding of the bearing without damaging the outer wall structure of the bearing, thus ensuring the initial limiting stability during the bearing alignment adjustment process.

[0031] Please see Figure 1 - Figure 6 In one embodiment, the pre-pressure self-aligning assembly includes a threaded rod 5, a second handle 501, and a pressure plate 502. The threaded rod 5 is rotatably disposed on the rear side of the frame 1, the pressure plate 502 is threadedly sleeved on the outer surface of the threaded rod 5, and the second handle 501 is fixed to the upper end of the pressure plate 502. Rotating the second handle 501 causes the pressure plate 502 to rise and fall vertically to achieve the lower pressure pre-pressure limit. Rotating the second handle 501 causes the pressure plate 502 to rise and fall vertically along the threaded rod 5 to achieve the lower pressure pre-pressure limit. The pre-pressure intensity is manually controllable.

[0032] Please see Figure 1 - Figure 6 In one embodiment, the detection control unit includes a tilt sensor 4, a laser position detection probe 41, and a control panel 42. The tilt sensor 4 is installed on the outside of the spherical self-aligning seat 33, the laser position detection probe 41 is installed on the inside of the column of the frame 1 and aligned with the bearing center hole, and the control panel 42 is electrically connected to the tilt sensor 4, the laser position detection probe 41, and the three-axis displacement adjustment module 32 respectively for data acquisition and adjustment control.

[0033] The specific procedure for using this device is as follows: First, the fixing and locking components are operated to firmly clamp the entire frame to the preset installation position of the steel structure bifurcation column, completing the tooling foundation fixation. Then, the radial spherical plain bearing 34 to be assembled is placed on the spherical self-aligning seat, and the outer ring of the radial spherical plain bearing 34 is flexibly clamped and limited by the limiting clamping components. Next, the pre-pressure self-aligning components are operated to slightly press down on the upper end face of the bearing, so that the radial spherical plain bearing 34 and the spherical self-aligning seat adaptively fit together to complete the initial attitude alignment. After that, the detection and control unit collects the bearing attitude tilt angle and hole coaxiality deviation data in real time, and the built-in correction logic calculates the three-axis displacement compensation amount, driving the three-axis displacement adjustment module to complete the three-dimensional precise alignment. After the alignment is qualified, the pin is inserted to complete the permanent assembly of the bearing. Finally, the tooling components are released in the specified order to complete the overall assembly operation. Example 2

[0034] Please see Figure 6 and Figure 7 The present invention also provides a method for the post-installation positioning of a radial joint bearing connecting a bifurcated column and a truss, applicable to the aforementioned post-installation device for a radial joint bearing connecting a steel structure bifurcated column and a truss, comprising the following steps: S1. Tooling clamping and fixing: Control the action of the fixing and locking components to clamp and fix the entire frame to the preset installation position of the steel structure fork column.

[0035] S2, Bearing Placement Limit: Place the radial spherical plain bearing on the spherical self-aligning seat, and use the limit clamping assembly to clamp and limit the outer side of the radial spherical plain bearing.

[0036] S3, Bearing Preload Fitting: Control the preload self-aligning component to press down on the upper end of the radial joint bearing, so that the radial joint bearing and the spherical self-aligning seat self-adaptively fit together, and complete the initial attitude self-alignment.

[0037] S4. Multi-source deviation data acquisition: The attitude tilt angle data and bearing bore coaxiality position deviation data of the radial joint bearing are acquired in real time through the detection and control unit.

[0038] Furthermore, the tilt sensor 4 collects the two-dimensional tilt angle data of the bearing in real time, and the laser position detection probe 41 collects the coaxial deviation data of the hole position in real time in a non-contact manner. The dual sensor data are collected in linkage to realize the synchronous detection of dual deviations in position and angle, ensuring that the alignment adjustment data is comprehensive and accurate.

[0039] S5, Pose Coupling Iterative Correction Calculation: The control unit preprocesses the collected multi-source detection data and combines it with the preset pose coupling hierarchical iterative correction logic to obtain the triaxial displacement compensation amount.

[0040] Furthermore, the pose coupling hierarchical iterative correction logic is configured with a coaxiality correction calculation formula, which is as follows:

[0041] In the formula: This is the correction amount for the closed-loop coaxiality compensation in the nth iteration. 、\Delta Y_{n}、 These are the measured values ​​of the original spatial position deviation of the three axes. This represents the two-dimensional tilt angle offset of the bearing. This refers to the three-axis dynamic matching correction coefficient. Here is the attitude coupling compensation constant. Adjust the weight coefficients to ensure iterative convergence.

[0042] Specifically, it includes the following sub-steps: S51. Multi-source sensor data fusion preprocessing: The collected tilt angle data and laser position deviation data are filtered and denoised, and abnormal data are removed to eliminate the interference error of field environmental vibration. S52, Attitude and position coupling hierarchical calculation: Substitute the pre-processed position deviation and attitude tilt angle data into the correction calculation formula to calculate the initial coaxiality compensation amount and allocate the adjustment command in a hierarchical manner. S53. Closed-loop iterative convergence fine-tuning: After the initial adjustment, the deviation data is collected a second time and compared with the accuracy threshold. If the threshold is not met, the iterative weight coefficient is reduced and the correction operation is repeated until the deviation converges to the preset accuracy range.

[0043] S6. Three-axis precise alignment adjustment: The control module performs three-dimensional fine-tuning based on the displacement compensation calculated from the calculation, until the coaxiality deviation between the bearing hole and the steel structure ear plate mounting hole reaches the preset accuracy threshold.

[0044] S7. Bearing assembly and tooling disassembly: After the pin is inserted into the aligned bearing hole and ear plate hole, the bearing assembly is completed. Then, the preload self-aligning assembly, the limit clamping assembly and the fixing locking assembly are released in sequence, and the tooling is disassembled and removed as a whole.

[0045] Furthermore, after the bearing is precisely aligned and assembled, first remove the upper pressure plate 502 pre-pressure limit, then loosen the auxiliary clamping structure of the two side clamping rings 37, and finally rotate the bidirectional lead screw 2 in the opposite direction to loosen the entire tooling. The disassembly sequence is from top to bottom and from inside to outside to avoid touching the installed bearing during the disassembly process and causing alignment misalignment, thus ensuring the assembly accuracy.

[0046] Specifically, after the tooling is disassembled, it is properly stored. The assembled bearings do not require secondary adjustment, the assembly accuracy meets the standards, and the structural connection is stable and reliable.

[0047] In summary, a dedicated clamping fixture structure enables rapid pre-assembly and fixation. Combined with a three-axis displacement adjustment module 33 and multi-source sensor detection, along with a unique position and posture coupling iterative correction algorithm, the post-assembly process of radial joint bearings is automated and achieves high-precision alignment. This solves the pain points of traditional steel structure bifurcated column and truss connection bearings, such as high difficulty in post-assembly alignment, low assembly accuracy, time-consuming and labor-intensive manual adjustment, and easy misalignment after assembly.

[0048] All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rear-mounted device for a radial joint bearing connecting a bifurcated column and a truss, characterized in that, The device includes: a frame (1), a fixing and locking assembly, an adjustment platform, a spherical self-aligning seat (33), a pre-pressure self-aligning assembly, and a detection and control unit; The fixing and locking assembly is located on the lower side of the frame (1). The fixing and locking assembly is used to lock and fix the frame (1) as a whole to the preset installation position on the outside of the steel structure bifurcation column. The adjustment platform is located inside the frame (1). The adjustment platform includes a three-axis displacement adjustment module (32). The three-axis displacement adjustment module (32) is used to achieve fine adjustment of the horizontal, vertical and three-dimensional spatial position. The spherical self-aligning seat (33) is fixedly installed on the upper movable platform of the three-axis displacement adjustment module (32). The spherical self-aligning seat (33) is used to support the placement of the radial joint bearing (34) and adaptively fit and align itself. The preload self-aligning assembly is vertically installed on the rear side of the frame (1). The preload self-aligning assembly is used to apply preload to the upper end face of the radial spherical bearing (34) so ​​that the radial spherical bearing (34) and the spherical self-aligning seat (33) fit together to complete the posture correction. The detection control unit is fixedly mounted on the inner wall of the frame (1). The detection control unit is electrically connected to the three-axis displacement adjustment module (32) and is used to detect the bearing installation position deviation and attitude tilt angle deviation in real time, and control the three-axis displacement adjustment module (32) to complete automatic alignment correction adjustment.

2. The rear-mounted device for a radial joint bearing connecting a bifurcated column and a truss according to claim 1, characterized in that: The fixing and locking assembly includes a two-way lead screw (2), a first handle (22) and two fixing plates (21); The bidirectional lead screw (2) is rotatably mounted on the inner wall of both sides of the frame (1). The first handle (22) is fixedly mounted on the end of the bidirectional lead screw (2). Two fixing plates (21) are symmetrically threaded onto the outer surface of the bidirectional lead screw (2). Rotating the first handle (22) drives the bidirectional lead screw (2) to rotate, thereby driving the two sets of fixing plates (21) to move relative to each other to achieve clamping and fixing.

3. The rear-mounted device for a radial joint bearing connecting a bifurcated column and a truss according to claim 2, characterized in that: The adjustment platform also includes a connecting plate (3) and a support plate (31); Two connecting plates (3) are fixed on opposite sides of two fixed plates (21), and the two connecting plates (3) are slidably embedded in the inner wall of the support plate (31). A three-axis displacement adjustment module (32) is fixedly installed on the top of the support plate (31).

4. The rear-mounted device for a radial joint bearing connecting a bifurcated column and a truss according to claim 3, characterized in that: The device also includes a limiting clamping assembly, which includes a sliding plate (35), a transmission rod (36), a clamping ring (37), and an anti-slip damping pad (38). Two sliding plates (35) are slidably set on both sides of the three-axis displacement adjustment module (32). The sliding plates (35) are connected to the clamping ring (37) through the transmission rod (36). The inner wall of the clamping ring (37) is fixedly set on one side of the anti-slip damping pad (38) for flexibly clamping and limiting the outer ring of the radial joint bearing (34).

5. The rear-mounted device for a radial joint bearing connecting a bifurcated column and a truss according to claim 4, characterized in that: The preload self-aligning assembly includes a threaded rod (5), a second handle (501), and a pressure plate (502); The threaded rod (5) is rotatably mounted on the rear side of the frame (1). The pressure plate (502) is threaded onto the outer surface of the threaded rod (5). The second handle (501) is fixed on the upper end of the pressure plate (502). Rotating the second handle (501) drives the pressure plate (502) to rise and fall vertically to achieve the pre-pressing limit.

6. The rear-mounted device for a radial joint bearing connecting a bifurcated column and a truss according to claim 5, characterized in that: The detection and control unit includes a tilt sensor (4), a laser position detection probe (41), and a control panel (42). The tilt sensor (4) is installed on the outside of the spherical self-aligning seat (33), the laser position detection probe (41) is installed on the inside of the frame (1) column and aligned with the bearing center hole, and the control panel (42) is electrically connected to the tilt sensor (4), the laser position detection probe (41) and the three-axis displacement adjustment module (32) respectively for data acquisition and adjustment control.

7. A method for post-installation positioning of a radial joint bearing connecting a bifurcated column and a truss, comprising a post-installation device for a radial joint bearing connecting a bifurcated column and a truss according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Tooling clamping and fixing: Control the action of the fixing and locking components to clamp and fix the entire frame to the preset installation position of the steel structure bifurcation column; S2, Bearing Placement Limit: Place the radial spherical plain bearing on the spherical self-aligning seat, and use the limit clamping assembly to clamp and limit the outer side of the radial spherical plain bearing; S3, Bearing preload fit: Control the preload self-aligning component to press down on the upper end of the radial joint bearing, so that the radial joint bearing and the spherical self-aligning seat fit together adaptively, and complete the initial attitude self-alignment; S4. Multi-source deviation data acquisition: The attitude tilt angle data and bearing bore coaxiality position deviation data of the radial joint bearing are acquired in real time through the detection and control unit. S5, Pose Coupling Iterative Correction Calculation: The control unit preprocesses the acquired multi-source detection data and combines it with the preset pose coupling hierarchical iterative correction logic to obtain the triaxial displacement compensation amount. S6. Three-axis precise alignment adjustment: The three-axis displacement adjustment module performs three-dimensional fine adjustment based on the displacement compensation amount calculated, until the coaxiality deviation between the bearing hole and the steel structure ear plate mounting hole reaches the preset accuracy threshold. S7. Bearing assembly and tooling disassembly: After the pin is inserted into the aligned bearing hole and ear plate hole, the bearing assembly is completed. Then, the preload self-aligning assembly, the limit clamping assembly and the fixing locking assembly are released in sequence, and the tooling is disassembled and removed as a whole.

8. The method for post-installation positioning of a radial joint bearing connecting a bifurcated column and a truss according to claim 5, characterized in that: In step S4, the tilt sensor (4) collects the two-dimensional tilt angle data of the bearing in real time, and the laser position detection probe (41) collects the coaxial deviation data of the hole position in real time in a non-contact manner. The dual sensor data are collected in linkage to realize the synchronous detection of dual deviations of position and angle, and ensure that the alignment adjustment data is comprehensive and accurate. In step S7, after the bearing is precisely aligned and assembled, the upper pressure plate (502) is removed first to pre-press and limit it, then the clamping rings (37) on both sides are loosened to assist the clamping structure, and finally the bidirectional screw (2) is rotated in the opposite direction to loosen the entire fixture. The disassembly sequence is from top to bottom and from inside to outside to avoid touching the installed bearing during the disassembly process and causing alignment deviation, thus ensuring the assembly accuracy.

9. A method for post-installation positioning of a radial joint bearing connecting a bifurcated column and a truss according to claim 5, characterized in that: In step S5, the pose coupling hierarchical iterative correction logic is configured with a coaxiality correction calculation formula, which is: ， In the formula: This is the correction amount for the closed-loop coaxiality compensation in the nth iteration. 、\Delta Y_{n}、 These are the measured values ​​of the original spatial position deviation of the three axes. This represents the two-dimensional tilt angle offset of the bearing. This refers to the three-axis dynamic matching correction coefficient. Here is the attitude coupling compensation constant. Adjust the weight coefficients to ensure iterative convergence.

10. A method for post-installation positioning of a radial joint bearing connecting a bifurcated column and a truss according to claim 5, characterized in that: Step S5 includes the following sub-steps: S51. Multi-source sensor data fusion preprocessing: The collected tilt angle data and laser position deviation data are filtered and denoised, and abnormal data are removed to eliminate the interference error of field environmental vibration. S52, Attitude and position coupling hierarchical calculation: Substitute the pre-processed position deviation and attitude tilt angle data into the correction calculation formula to calculate the initial coaxiality compensation amount and allocate the adjustment command in a hierarchical manner. S53. Closed-loop iterative convergence fine-tuning: After the initial adjustment, the deviation data is collected a second time and compared with the accuracy threshold. If the threshold is not met, the iterative weight coefficient is reduced and the correction operation is repeated until the deviation converges to the preset accuracy range.

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