An integrated device for enlarging and trimming bolt holes in steel structures

Abstract

This application relates to an integrated device for enlarging and trimming bolt holes in steel structures, belonging to the technical field of integrated enlarging and trimming devices. It includes a frame and a centering enlarging assembly and a trimming assembly mounted on the frame. The centering enlarging assembly is used to locate and enlarge the axial geometric center of misaligned bolt holes. The trimming assembly is used to clean and trim debris adhering to the hole wall after enlarging. The centering enlarging assembly includes a mounting plate slidably mounted on the side wall of the frame. A rotatable and axially movable reamer and a centering rod are movably mounted on the mounting plate. The frame is equipped with a detection element for detecting the distance between the centering rod and the bolt hole wall, a sliding element for driving the mounting plate to slide along the height and length directions of the secondary beam, and a driving element for driving the centering rod and reamer to rotate and move axially. This application has the advantages of facilitating the positioning and alignment of the reamer with the bolt hole, improving the automation rate of enlarging and trimming, and increasing the accuracy and efficiency of enlarging.

Description

Technical Field

[0001] This application relates to the field of integrated hole enlargement and trimming devices, and in particular to an integrated device for enlarging and trimming bolt holes in steel structures. Background Technology

[0002] Steel structure is one of the main types of building structure at present. Common steel structures use H-beams as the skeleton to form a beam-column load-bearing structure. The main and secondary beams under simple support are usually connected by a flat joint. That is, stiffening ribs for support are welded on the web of the main beam, and the web of the secondary beam end is fixed to the stiffening ribs with high-strength bolts and nuts. The welding of the stiffening ribs and the processing of the bolt holes are all completed in the factory.

[0003] During on-site construction, the secondary beam is first hoisted to the position where the web of the secondary beam fits against the stiffening rib. Then, the technicians insert the bolts into the bolt holes and tighten the nuts. However, due to the superposition of tolerances in multiple processes such as bolt hole opening tolerance, deformation of the main and secondary beams due to their own weight, and offset during hoisting and positioning, some bolt holes become misaligned, making it difficult to drill. At this time, the technicians need to enlarge the misaligned bolt holes and install the remaining bolts and nuts. Enlarging is usually done with a magnetic drill and a reamer. The reamer is a guide cone reamer, which is coaxially fixed to the output end of the magnetic drill.

[0004] When enlarging the hole, the technician needs to hold the magnetic drill with both hands to stabilize it, and then start the magnetic drill to make the reamer pass through the misaligned bolt holes. Relying on the guide cone to fit against the walls of the two bolt holes, the axial geometric center of the two holes is automatically found. After the center is completely aligned, the magnetic drill is magnetically attracted and energized to make the magnetic drill firmly hold the secondary beam web plate. Finally, the magnetic drill is started to drive the reamer to rotate, realizing low-speed micro-reaming and enlarging of the hole. Then the technician can clean and repair the hole wall.

[0005] Regarding the aforementioned technologies, when aligning the axial geometric center of the two holes with a reamer, the initial axis of the reamer is prone to excessive deviation from the bolt hole, causing the reamer to scratch the hole wall and produce extrusion scratches exceeding the conventional reaming allowance. This can easily lead to potential hazards such as fatigue cracking of the base material and loosening of the connection. Since the bolt hole is horizontal and technicians need to work at height, it is inconvenient for them to hold the magnetic drill and keep the reamer parallel to the bolt hole axis, resulting in inaccurate positioning. This causes excessive unilateral force on the reamer during hole reaming, easily leading to chipping, scratching of the hole wall, and the generation of difficult-to-clean metal debris. Furthermore, the reamed hole wall is non-circular, the bolt shank is unevenly eccentric, and it causes extrusion damage to the bolt shank, reducing the bolt's shear capacity. Additionally, after reaming, the bolt hole needs to be aligned again and manually cleaned and trimmed. However, prolonged work at height is difficult due to instability and limited operating posture, making it difficult to clean the metal debris adhering to the hole wall, leading to continuously decreasing efficiency and posing safety hazards. Summary of the Invention

[0006] To facilitate the positioning and alignment of the reamer with the bolt hole, improve the automation rate of hole enlargement and trimming, and enhance the accuracy and efficiency of hole enlargement, this application provides an integrated device for enlarging and trimming bolt holes in steel structures.

[0007] This application provides an integrated device for enlarging and trimming bolt holes in steel structures, which adopts the following technical solution: An integrated device for enlarging and repairing bolt holes in steel structures includes a frame and a centering enlarging component and a repairing component mounted on the frame. The centering enlarging component is used to locate the axial geometric center of the misaligned bolt hole and enlarge it, and the repairing component is used to clean and repair the debris adhering to the hole wall after enlarging. A fixing component is used to position and fix the frame at the corresponding position of the bolt holes in the secondary beam web. The frame is provided with a window to facilitate the installation of bolts and the enlargement and adjustment of holes. The centering and reaming assembly includes a mounting plate slidably disposed on the side wall of the frame. A rotatable and axially movable reamer and a centering rod are movably disposed on the mounting plate. The centering rod is positioned facing the web of the secondary beam and movably passing through the bolt hole. The reamer is coaxially disposed on the end of the centering rod away from the web of the secondary beam. The frame is provided with a detection component for detecting the distance between the centering rod and the bolt hole wall, a sliding component for driving the mounting plate to slide along the height and length of the secondary beam, and a driving component for driving the centering rod and the reamer to rotate and move axially.

[0008] By adopting the above technical solution, during construction, technicians place the frame on the web of the secondary beam and fix the frame in place using the fixing components. Then, the secondary beam, together with the frame, is hoisted to the stiffening rib of the main beam, and the stiffening rib is brought into contact with the web of the secondary beam, while the bolt holes of the secondary beam and the stiffening rib are aligned.

[0009] Then, the technicians pass the bolts through the bolt holes. If some bolts are difficult to pass through, it indicates that there is a misalignment in the bolt hole. At this time, the technicians tighten the remaining nuts and start the equipment. The sliding component works and drives the mounting plate to slide along the height and length of the secondary beam, so that the centering rod and the reamer move to correspond to the misaligned bolt hole, realizing the pre-positioning of the reamer. This reduces the risk of the reamer hitting the hole wall and causing extrusion scratches that exceed the conventional reaming allowance due to the accuracy error of the initial positioning by manual means. This reduces the hidden dangers such as fatigue cracking of the base material and loosening of the connection between the main and secondary beams.

[0010] Then, the driving component moves the centering rod through the bolt hole until it is positioned inside. Simultaneously, the driving component slowly rotates the centering rod. At this point, the distance between the centering rod axis and the bolt hole wall is detected by the detection component. The sliding component then fine-tunes the position of the mounting plate until the centering rod is aligned with the axial geometric center of the misaligned bolt hole. During operation, the sliding component ensures that the centering rod remains parallel to the bolt hole axis, achieving precise positioning of the reamer. This reduces reamer chipping or abnormal wear, extends the reamer's service life, and improves hole reaming accuracy. It also reduces the risk of uneven bolt stress due to poor hole reaming accuracy, thereby reducing the risk of decreased bolt shear capacity.

[0011] After the reamer is positioned, the drive unit continues to work, driving the reamer to rotate and pass through the bolt hole to enlarge the bolt hole. Then, the dressing component cleans and trims the hole wall after enlargement to remove debris adhering to the hole wall and reduce the risk of debris causing extrusion damage to the bolt shank.

[0012] After the hole wall is finished, the technicians drill holes in the bolts and tighten the nuts to fix the secondary beam to the main beam. The above method improves the automation rate of the hole enlargement and finishing process, reduces human operation error, further improves the accuracy of hole enlargement and finishing, and reduces the intensity of manual labor.

[0013] Optionally, the detection element includes 3n centering wires disposed on the outer peripheral wall of the centering rod. The 3n centering wires are evenly distributed at intervals along the outer peripheral wall of the centering rod. The centering wires are arched and move against the wall of the bolt hole, and have elastic deformation capability. Multiple detection blocks are provided on the outer peripheral wall of the centering rod, and each detection block corresponds to one of the multiple centering wires. Each detection block includes a sliding block and a fixed block on the centering rod. The sliding block is slidably connected to the centering rod. The end of the centering wire near the reamer is connected to the sliding block. The fixed block is located on the side of the sliding block away from the centering wire. A sliding rod is provided on the side wall of the sliding block near the fixed block. The sliding rod slides through the fixed block. A first pressure sensor is provided on the side wall of the fixed block near the sliding block. An abutment plate is provided on the side wall of the first pressure sensor away from the fixed block. An elastic element is provided between the abutment plate and the sliding block to make the sliding block slide away from the fixed block. A controller is provided on the frame. The first pressure sensor and the sliding element are electrically connected to the controller.

[0014] By adopting the above technical solution, when positioning the reamer, the centering rod passes through the misaligned bolt hole, so that the arched end of the centering wire abuts against the wall of the bolt hole. At this time, the centering wire undergoes elastic deformation and drives the sliding block to slide closer to the fixed block, so that the elastic element abuts against the abutment plate and further abuts against the first pressure sensor. At this time, the first pressure sensor detects the pressure of the elastic element acting on the abutment plate and transmits the electrical signal to the controller. By analyzing and calculating the pressure data, the controller can determine the distance of the centering rod from the centering wire to the hole wall.

[0015] As the centering rod slowly rotates, the 3n centering wires rotate and deform against the hole wall, thus obtaining the distances from the hole wall at multiple positions on the circumference of the centering rod. At this time, the controller, based on the values ​​of the pressure sensors, causes the sliding component to drive the mounting plate to slide until the difference between the maximum and minimum values ​​of the pressure sensors corresponding to the 3n centering wires are within the set range. This indicates that the axis of the centering rod is located on the axial geometric center of the misaligned bolt hole, thereby achieving the positioning of the centering rod and the reamer, improving the positioning accuracy and automation rate, and increasing the positioning efficiency. Compared with positioning using the tapered part of the reamer, the elastically deformable centering wires reduce the risk of impact damage to the hole wall.

[0016] At the same time, based on the difference between the maximum and minimum values ​​of the pressure sensor, it can be determined that the coaxiality deviation of the bolt hole exceeds the limit, which facilitates the judgment of technicians.

[0017] Optionally, the trimming assembly includes multiple strands of copper wire twisted and wrapped around the outer peripheral wall of the centering wire.

[0018] By adopting the above technical solution, the risk of bumping and damaging the hole wall when positioning the reamer is further reduced by twisting the copper wire wrapped around the outer peripheral wall of the centering wire.

[0019] After the hole is enlarged, the drive unit slowly reverses and retracts the reamer until it separates from the hole wall. Then, the drive unit increases the rotation speed of the centering rod, causing the copper wire wrapped around the centering wire to rub against the hole wall after enlargement. This removes the debris adhering to the hole wall, reduces the need for repositioning during finishing, and the copper wire reduces the risk of damage to the hole wall, improves the smoothness of the hole wall, enhances the uniformity of the bolt load acting on the hole wall, reduces the relative slippage of the main and secondary beams, and improves the structural stability.

[0020] Meanwhile, the above solution automates the positioning of the reamer, hole enlargement, and hole wall trimming through the reciprocating operation of the centering rod and the reamer, thereby improving construction efficiency.

[0021] Optionally, the centering wire has a first state and a second state. When the centering wire is in the first state, it is in a stable arch shape and moves against the wall of the bolt hole, and has elastic deformation capability. When the centering wire is in the second state, it is in a flexible and relaxed state. The frame is provided with a switching component that allows the centering wire to switch between the first state and the second state.

[0022] By adopting the above technical solution, when the reamer is positioned, the switching component puts the centering wire in the first state. At this time, the centering wire is in a stable arch shape and is in contact with the wall of the bolt hole. It also has elastic deformation capability, which makes it easy to measure the distance between the centering rod and the hole wall.

[0023] When the hole wall is being trimmed, the switching element puts the centering wire into the second state. At this time, the centering wire is in a flexible and relaxed state. As the centering rod rotates at high speed, and under the action of the elastic element, the centering wire forms a flexible arch. The centering wire and copper wire are easy to deform, which improves the fit with the hole wall, improves the cleaning and trimming effect of the hole wall, and further reduces the risk of damage to the hole wall caused by the centering wire and copper wire.

[0024] Optionally, the centering wire is a nickel-titanium shape memory alloy. The centering wire switches from a first state to a second state when the temperature drops to a preset temperature, and switches from the second state to the first state when the temperature rises to a preset temperature. The switching element includes a power supply disposed on the frame, and the centering wire is electrically connected to the power supply.

[0025] By adopting the above technical solution, when the reamer needs to be positioned, the power supply energizes the centering wire, causing the centering wire to generate resistance heat. By controlling the energizing time, the temperature of the centering wire is raised to the preset phase change temperature, causing the centering wire to switch from the second state to the first state.

[0026] After the reamer is positioned, the power supply and the centering wire are disconnected. As the centering rod rotates during hole reaming, the temperature of the centering wire gradually drops to the preset phase change temperature. At the same time, the copper wire enhances the heat dissipation capacity of the centering wire, causing the centering wire to switch from the first state to the second state.

[0027] Optionally, the sliding component includes a sliding frame slidably disposed on the side wall of the frame, the mounting plate being slidably connected to the sliding frame, the sliding direction of the sliding frame being perpendicular to the sliding direction of the mounting plate, and a first power component for driving the mounting plate to slide and a second power component for driving the sliding frame to slide being mounted on the frame, both the first power component and the second power component being electrically connected to the controller.

[0028] By adopting the above technical solution, during operation, the controller controls the first power component and the second power component to work, so that the first power component drives the mounting plate to slide on the sliding frame, while the second power component drives the sliding frame and the mounting plate to slide along the length direction of the secondary beam, thereby realizing the sliding of the mounting plate along the height and length direction of the secondary beam, realizing the automatic adjustment of the position of the centering rod and the reamer, improving the stability of the centering rod and the reamer, and improving the positioning and hole enlarging accuracy.

[0029] Optionally, the fixing assembly includes a first electromagnet and a second electromagnet disposed on the frame, wherein the first electromagnet and the second electromagnet are both located on the side of the frame away from the mounting plate; The first electromagnet is movably attached to the side wall of the secondary beam web away from the frame, and the second electromagnet is movably flush with the other side wall of the secondary beam web away from the frame, so that when the secondary beam web is attached to the stiffening rib, the second electromagnet is attached to the side wall of the stiffening rib, and the side wall of the second electromagnet close to the first electromagnet is movably attached to the end face of the secondary beam web. Both the first electromagnet and the second electromagnet are electrically connected to the power supply.

[0030] By adopting the above technical solution, when positioning and fixing the frame, the technician first places the frame on the web of the secondary beam, so that the side wall of the second electromagnet close to the first electromagnet is in contact with the end face of the web of the secondary beam, and at the same time, the side wall of the first electromagnet away from the frame is in contact with the side wall of the web of the secondary beam. Then, the power supply is turned on to the first electromagnet, so that the electromagnet is magnetically attracted to the web of the secondary beam. At this time, the side wall of the second electromagnet away from the frame is flush with the side wall of the web of the secondary beam away from the first electromagnet.

[0031] The secondary beam, along with the frame, is then moved to a position where its web and stiffening ribs are close together. Technicians adjust the position of the secondary beam so that the bolt holes on the secondary beam align with those on the stiffening ribs. Then, the power supply is turned on to the second electromagnet, causing it to magnetically attach to the stiffening rib, thus pre-fixing the secondary beam to the stiffening rib. This facilitates the installation of bolts and nuts by technicians. Furthermore, by de-energizing the first and second electromagnets, the frame can be disassembled, allowing technicians to lift the frame to the next secondary beam position, thereby improving construction efficiency.

[0032] Optionally, the fixing assembly further includes two support blocks that are elastically slidably disposed within the frame. The two support blocks are arranged opposite to each other, and the sidewalls of the two support blocks that are far apart from each other are movably protruding from the sidewalls of the frame and are respectively movably abutting against the upper and lower flanges of the secondary beam. A push block is slidably disposed on the frame. The sidewall of the push block near the support block is sharp, and the two support blocks that are close to each other are respectively movably abutting against the two inclined surfaces of the push block. The push block is provided with a translation block, which is movably protruding from the side wall of the frame near the mounting plate. The sliding frame is provided with a lever, which is movably pressed against the side wall of the translation block. The translation block is provided with a second pressure sensor to detect the pressure of the lever pressing against the translation block. The second pressure sensor is electrically connected to the controller.

[0033] By adopting the above technical solution, when positioning and fixing the frame, the technicians make the side wall of the second electromagnet close to the first electromagnet fit against the end face of the secondary beam web. Then, the second power component drives the sliding frame to slide, so that the push block is pressed against and drives the translation block and the push block to slide. This causes the inclined surface of the push block to press against and drive the two support blocks to slide away from each other, so that the two support blocks press against the upper and lower flanges of the secondary beam respectively, until the second pressure sensor reaches the preset pressure value. At this time, the second pressure sensor transmits an electrical signal to the controller, and the controller controls the second power component to stop working, reducing the risk of excessive sliding of the support blocks causing compression deformation of the secondary beam flanges.

[0034] Simultaneously, the power supply energizes the second electromagnet, which fixes the frame in the center of the secondary beam, improving the consistency of the frame's fixed position and thus enhancing the accuracy of pre-positioning the reamer. At this time, the mounting plate and sliding frame are located on one side of the frame window, which is less likely to obstruct the installation of bolts and nuts, making it easier for technicians to operate.

[0035] Optionally, the driving component includes a dovetail slide plate slidably disposed on the mounting plate and a third power component for driving the dovetail slide plate to slide. The dovetail slide plate is provided with a fourth power component for driving the reamer and the centering rod to rotate. The output end of the fourth power component is connected to the reamer.

[0036] By adopting the above technical solution, when positioning or enlarging the hole with a reamer, the fourth power component drives the reamer and the centering rod to rotate. At the same time, the third power component works, causing the dovetail slide to slide with the fourth power component, thereby driving the axial movement of the reamer and the centering rod.

[0037] In summary, this application includes at least one of the following beneficial technical effects: 1. When positioning the reamer, 3n centering screws rotate within the bolt holes, causing them to deform against the hole wall. This causes the sliding block to slide, bringing the elastic element against the abutment plate and further against the first pressure sensor. The first pressure sensor detects the pressure exerted by the elastic element on the abutment plate and transmits the electrical signal to the controller. The controller analyzes and calculates the pressure data to determine the distance between the centering rod and the hole wall at the centering screw. This continues until the difference between the maximum and minimum values ​​of the pressure sensors corresponding to the 3n centering screws are within the set range. This indicates that the axis of the centering rod is located at the axial geometric center of the misaligned bolt hole, thus achieving the positioning of the centering rod and the reamer. This improves the accuracy and automation of positioning, as well as its efficiency. Compared to positioning with the tapered part of the reamer, the elastically deformable centering screws reduce the risk of the reamer damaging the hole wall and causing extrusion scratches that exceed the conventional reaming allowance. This reduces the risk of fatigue cracking in the base material, which could lead to loosening of the main and secondary beam connections. 2. By driving the mounting plate to slide through the set sliding component, the position of the centering rod and the reamer can be finely adjusted, ensuring that the centering rod is always parallel to the axis of the bolt hole. This achieves precise positioning of the reamer, reduces the risk of reamer chipping or abnormal wear, extends the service life of the reamer, and improves the hole enlargement accuracy. At the same time, it reduces the risk of uneven bolt stress caused by poor hole enlargement accuracy, thereby reducing the risk of a decrease in the bolt's shear bearing capacity. 3. The driving component drives the centering rod to rotate and move axially, aligning the reamer axis with the axial geometric center of the misaligned bolt hole. The driving component then continues to work, enlarging the bolt hole with the reamer. The driving component then drives the reamer to slowly reverse and retract until the reamer separates from the hole wall. The driving component then increases the rotation speed of the centering rod, causing the copper wire wrapped around the centering wire to rub against the enlarged hole wall, removing debris adhering to the hole wall. This reduces the need for repositioning during finishing and the copper wire reduces the risk of damage to the hole wall. Simultaneously, the positioning of the reamer, hole enlargement, and finishing of the hole wall are automated, improving construction efficiency. 4. When positioning the reamer, the switching element puts the centering wire in the first state. At this time, the centering wire is in a stable arch shape and has elastic deformation capability, which makes it easy to measure the distance between the centering rod and the hole wall. When the hole wall is being trimmed, the switching element puts the centering wire in the first state. At this time, the centering wire is in a flexible and relaxed state. As the centering rod rotates at high speed, the centering wire forms a flexible arch under the action of the elastic element. The centering wire and copper wire are easy to deform, which improves the fit with the hole wall, improves the cleaning and trimming effect of the hole wall, and further reduces the risk of damage to the hole wall caused by the centering wire and copper wire. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the connection structure of the reamer, centering rod, mounting plate, and frame; Figure 3 This is a schematic diagram of the connection structure between the sliding block, the fixed block, and the centering rod. Figure 4 This is a schematic diagram of the connection structure between the support block, the push block, and the frame; Figure 5 yes Figure 2 A magnified view of part A in the diagram.

[0039] Reference numerals: 1. Frame; 11. Controller; 12. Lifting ring; 2. Centering and reaming assembly; 21. Mounting plate; 22. Reamer; 23. Centering rod; 24. Detector; 241. Centering wire; 242. Sliding block; 243. Fixing block; 244. Sliding rod; 245. Abutment plate; 246. First pressure sensor; 247. Elastic element; 248. Protective cylinder; 25. Sliding element; 251. Sliding frame; 252. First power element; 253. 26. Secondary power component; 26. Drive component; 261. Dovetail slide plate; 262. Third power component; 263. Fourth power component; 27. Switching component; 271. Power supply; 3. Trimming component; 31. Copper wire; 4. Fixing component; 41. First electromagnet; 42. Second electromagnet; 43. Support block; 44. Pushing block; 45. Translation block; 46. Pulling block; 47. Secondary pressure sensor; 5. Secondary beam; 6. Main beam; 7. Stiffening rib; 8. Bolt hole. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail below.

[0041] This application discloses an integrated device for enlarging and trimming bolt holes in steel structures.

[0042] Reference Figure 1 An integrated device for enlarging and repairing bolt holes in steel structures includes a frame 1 and two lifting rings 12 fixed on the frame 1. The frame 1 is detachably fixed to the corresponding position of the bolt hole 8 on the web of the secondary beam 5. The frame 1 has a window for easy installation of bolts and enlarging and repairing. The two lifting rings 12 facilitate the transfer of the frame 1. The frame 1 is provided with a fixing component 4 for fixing the frame 1 to the secondary beam 5.

[0043] To locate the axial geometric center of the misaligned bolt hole 8 and to enlarge the hole, a centering and enlarging assembly 2 is installed on the frame 1 for reference. Figure 1 and Figure 2The centering and reaming assembly 2 includes a mounting plate 21 slidably connected to the side wall of the frame 1. The mounting plate 21 can slide along the height and length of the secondary beam 5. A rotatable and axially movable reamer 22 and a centering rod 23 are movably connected to the mounting plate 21. The centering rod 23 is positioned facing the web of the secondary beam 5 and movably passes through the bolt hole 8. The reamer 22 is coaxially fixed to the end of the centering rod 23 away from the web of the secondary beam 5. The end of the centering rod 23 away from the reamer 22 is pointed. The rotation axis of the reamer 22 and the centering rod 23 is parallel to the axis of the bolt hole 8.

[0044] To drive the mounting plate 21 to slide, a sliding component 25 is provided on the frame 1, as shown in the figure. Figure 1 and Figure 2 The sliding component 25 includes a sliding frame 251 slidably connected to the side wall of the web of the secondary beam 5 away from the frame 1. The sliding direction of the sliding frame 251 is consistent with the length direction of the secondary beam 5. The mounting plate 21 is slidably connected to the sliding frame 251. The sliding direction of the mounting plate 21 is consistent with the height direction of the secondary beam 5. The sliding direction of the sliding frame 251 is perpendicular to the sliding direction of the mounting plate 21. The frame 1 is equipped with a first power component 252 for driving the mounting plate 21 to slide and a second power component 253 for driving the sliding frame 251 to slide. In this application, both the first power component 252 and the second power component 253 are electric push rods.

[0045] To drive the centering rod 23 and the reamer 22 to rotate and move axially, a drive unit 26 is provided on the frame 1, as shown in the reference. Figure 1 and Figure 2 The driving component 26 includes a dovetail slide plate 261 slidably connected to the mounting plate 21 and a third power component 262 that drives the dovetail slide plate 261 to slide. The sliding direction of the dovetail slide plate 261 is consistent with the axis of the reamer 22. A fourth power component 263 that drives the reamer 22 and the centering rod 23 to rotate is fixed on the dovetail slide plate 261. The output end of the fourth power component 263 is connected to the reamer 22. In this application, the third power component 262 is an electric push rod and the fourth power component 263 is a drill. In other embodiments, the drill can also be a geared motor, as long as it is convenient to fix the end of the reamer 22 away from the centering rod 23 to the output end of the fourth power component 263.

[0046] To improve the coaxiality of the reamer 22 and the axial geometric center of the misaligned bolt hole 8, a detection component 24 is installed on the frame 1 to detect the distance between the centering rod 23 and the wall of the bolt hole 8. Figure 2 and Figure 3The detection component 24 includes 3n centering wires 241 disposed on the outer peripheral wall of the centering rod 23. The 3n centering wires 241 are evenly distributed at intervals along the outer peripheral wall of the centering rod 23. The centering wires 241 are arched and move against the wall of the bolt hole 8, and have elastic deformation capability. In this application, there are three centering wires 241, that is, n is one. In other embodiments, depending on the size of the centering rod 23, there may be six, nine, twelve or more centering wires 241, and the arrangement method can be the same as in this application.

[0047] Multiple detection blocks are provided on the outer peripheral wall of the centering rod 23. Each detection block corresponds to a centering wire 241. Each detection block includes a sliding block 242 and a fixed block 243. The sliding block 242 is slidably connected to the centering rod 23. One end of the centering wire 241 near the reamer 22 is movably inserted into the sliding block 242, and the other end of the centering wire 241 is movably inserted into the centering rod 23. The centering wire 241 is fixed to the centering rod 23 or the sliding block 242 by a set screw, which facilitates the replacement of the centering wire 241 by technicians.

[0048] The fixing block 243 is fixed on the outer peripheral wall of the centering rod 23 and is located on the side of the sliding block 242 away from the centering wire 241. A sliding rod 244 is fixed on the side wall of the sliding block 242 near the fixing block 243. The sliding rod 244 slides through the fixing block 243. A first pressure sensor 246 is fixed on the side wall of the fixing block 243 near the sliding block 242. An abutment plate 245 is fixed on the side wall of the first pressure sensor 246 away from the fixing block 243. An elastic element 247 is provided between the abutment plate 245 and the sliding block 242 to make the sliding block 242 slide away from the fixing block 243. In this application, the elastic element 247 is a spring.

[0049] The outer peripheral wall of the centering rod 23 is provided with a groove for mounting the sliding block 242, the first pressure sensor 246 and the fixing block 243, so as to reduce the overall size of the centering rod 23 and reduce the risk of collision with the bolt hole 8. The outer peripheral wall of the centering rod 23 is fixed with a protective sleeve 248 by screws at the groove to reduce the risk of debris generated during hole enlargement or hole wall trimming entering the groove. The reamer 22 is hollow and is used for placing the wire harness. In order to avoid weakening the rigidity of the reamer 22, the diameter of the hollow hole is less than one-third of the core thickness of the reamer 22.

[0050] A controller 11 is installed on the frame 1. The first pressure sensor 246, the first power component 252, and the second power component 253 are all electrically connected to the controller 11. In this application, the first pressure sensor 246 is a piezoelectric ceramic.

[0051] During construction, technicians hoisted the frame 1 to the secondary beam 5, aligned the window on the frame 1 with the bolt hole 8, and fixed the frame 1 to the web of the secondary beam 5 using the fixing component 4. Then, the secondary beam 5, together with the frame 1, was hoisted to the stiffening rib 7 of the main beam 6, and the stiffening rib 7 was brought into contact with the web of the secondary beam 5, while the bolt holes 8 of the secondary beam 5 and the stiffening rib 7 were aligned.

[0052] Then, the technicians pass the bolts through the bolt holes 8. If some bolts are difficult to pass through, it indicates that there is a misalignment in the bolt holes 8. At this time, the technicians tighten the remaining nuts. Then, the controller 11 controls the first power component 252 and the second power component 253 to work. The first power component 252 drives the mounting plate 21 to slide on the sliding frame 251. At the same time, the second power component 253 drives the sliding frame 251 and the mounting plate 21 to slide along the length of the secondary beam 5. This allows the mounting plate 21 to slide along the height and length of the secondary beam 5, so that the centering rod 23 and the reamer 22 move to correspond to the misaligned bolt holes 8. This achieves the pre-positioning of the reamer 22, reducing the risk of the reamer 22 damaging the hole wall due to the accuracy error of the initial positioning by manual operation, resulting in extrusion scratches that exceed the conventional reaming and enlarging allowance. This reduces the hidden dangers such as fatigue cracking of the base material causing loosening of the connection between the main and secondary beams 5.

[0053] Then the fourth power component 263 operates, driving the reamer 22 and the centering rod 23 to rotate. At the same time, the third power component 262 operates, driving the dovetail slide plate 261 and the fourth power component 263 to slide a set distance, thereby driving the reamer 22 and the centering rod 23 to move axially, passing through the misaligned bolt hole 8, and causing the arched end of the centering wire 241 to press against the hole wall. At this time, the centering wire 241 undergoes elastic deformation, and drives the sliding block 242 to slide close to the fixed block 243, causing the elastic element 247 to press against the abutment plate 245, and further press against the first pressure sensor 246. At this time, the first pressure sensor 246 detects the pressure of the elastic element 247 acting on the abutment plate 245 and transmits the electrical signal to the controller 11. By analyzing and calculating the pressure data, the controller 11 can determine the distance of the centering rod 23 from the hole wall at the centering wire 241.

[0054] As the centering rod 23 slowly rotates, the three centering wires 241 rotate and deform against the hole wall, thus obtaining the distances from multiple positions on the circumference of the centering rod 23 to the hole wall. At this time, the controller 11 controls the first power component 252 and the second power component 253 to drive the mounting plate 21 to slide according to the value of the pressure sensor until the difference between the maximum and minimum values ​​of the pressure sensor corresponding to the three centering wires 241 are within the set range. This indicates that the axis of the centering rod 23 is located on the axial geometric center of the misaligned bolt hole 8, thereby realizing the positioning of the centering rod 23 and the reamer 22, improving the positioning accuracy and automation rate, and improving the positioning efficiency. Compared with positioning by the tapered part of the reamer 22, the risk of collision damage to the hole wall is reduced by the elastic deformation of the centering wires 241.

[0055] When positioning the reamer 22, the centering rod 23 is kept parallel to the axis of the bolt hole 8 to achieve precise positioning of the reamer 22, reduce the chipping or abnormal wear of the reamer 22, extend the service life of the reamer 22, improve the hole enlargement accuracy, and reduce the risk of uneven bolt stress caused by poor hole enlargement accuracy, thereby reducing the risk of a decrease in the bolt's shear bearing capacity.

[0056] After the reamer 22 is positioned, the third power component 262 and the fourth power component 263 continue to work, driving the reamer 22 to rotate and pass through the bolt hole 8, thereby enlarging the bolt hole 8, improving the automation rate of the positioning and enlarging process, and reducing human operation errors.

[0057] Furthermore, to facilitate the cleaning and finishing of the hole wall after enlargement and improve the smoothness of the hole wall, refer to... Figure 2 and Figure 3 The trimming component 3 includes multiple strands of copper wire 31 twisted and wrapped around the outer peripheral wall of the centering wire 241. The centering wire 241 is a nickel-titanium shape memory alloy and has a first state and a second state. When the temperature drops to a preset temperature, the centering wire 241 switches from the first state to the second state, and when the temperature rises to a preset temperature, it switches from the second state to the first state.

[0058] When the centering wire 241 is in the first state, the centering wire 241 is in a stable arch shape and is in contact with the wall of the bolt hole 8, and has elastic deformation capability. When the centering wire 241 is in the second state, the centering wire 241 is in a flexible and relaxed state. In order to switch the centering wire 241 between the first state and the second state, a switching component 27 is provided on the frame 1. The switching component 27 includes a power supply 271 provided on the frame 1. The centering wire 241 is electrically connected to the power supply 271. In this application, the power supply 271 is a battery built into the frame 1.

[0059] When positioning the reamer 22, the power supply 271 energizes the centering wire 241, causing the centering wire 241 to generate resistance heat. By controlling the energizing time, the temperature of the centering wire 241 is raised to the preset phase change temperature, causing the centering wire 241 to switch from the second state to the first state. At this time, the centering wire 241 is in a stable arch shape and is in close contact with the wall of the bolt hole 8. It also has elastic deformation capability, which facilitates the measurement of the distance between the centering rod 23 and the hole wall. At the same time, by twisting the copper wire 31 wrapped around the outer peripheral wall of the centering wire 241, the risk of bumping and damaging the hole wall when positioning the reamer 22 is further reduced.

[0060] After the reamer 22 is positioned, the power supply 271 and the centering wire 241 are de-energized. As the centering rod 23 rotates during hole enlargement, the temperature of the centering wire 241 gradually drops to the preset phase change temperature. At the same time, the copper wire 31 enhances the heat dissipation capacity of the centering wire 241, allowing the centering wire 241 to switch from the first state to the second state.

[0061] After the hole is enlarged, the third power component 262 and the fourth power component 263 work. First, they drive the reamer 22 to slowly reverse and retract until the reamer 22 separates from the hole wall. Then, they drive the reamer 22 and the centering rod 23 to rotate rapidly, so that the copper wire 31 twisted and wrapped on the centering wire 241 rubs against the hole wall after enlargement. This removes the debris adhering to the hole wall, reduces the step of repositioning during finishing, and the copper wire 31 reduces the risk of damage to the hole wall, improves the smoothness of the hole wall, improves the uniformity of the bolt load on the hole wall, reduces the relative slippage of the main and secondary beams 5, and improves the structural stability.

[0062] At this time, the centering wire 241 is in a flexible and relaxed state. As the centering rod 23 rotates at high speed, and under the action of the elastic element 247, the centering wire 241 forms a flexible arch. The centering wire 241 and the copper wire 31 are easy to deform, which improves the fit with the hole wall, improves the cleaning and trimming effect of the hole wall, and further reduces the risk of damage to the hole wall caused by the centering wire 241 and the copper wire 31.

[0063] After the hole wall is finished, the technicians can pierce the bolts and tighten the nuts to fix the secondary beam 5 and the main beam 6. Through the reciprocating work of the centering rod 23 and the reamer 22, the positioning of the reamer 22, the hole enlargement and the hole wall finishing can be automated, which improves construction efficiency, improves the accuracy of hole enlargement and finishing and reduces the intensity of manual labor.

[0064] Furthermore, in order to position and fix the frame 1 so that it is located at the corresponding position of the bolt holes 8 on the web of the secondary beam 5, the frame 1 is provided with a fixing component 4, as shown in the figure. Figure 4The fixing component 4 includes a first electromagnet 41 and a second electromagnet 42 fixed on the frame 1. The first electromagnet 41 and the second electromagnet 42 are both located on the side of the frame 1 away from the mounting plate 21. The first electromagnet 41 is movably attached to the side wall away from the frame 1 and the side wall of the web of the secondary beam 5. The second electromagnet 42 is movably flush with the other side wall of the web of the secondary beam 5, so that when the web of the secondary beam 5 is attached to the stiffening rib 7, the second electromagnet 42 is attached to the side wall of the stiffening rib 7. The side wall of the second electromagnet 42 near the first electromagnet 41 is movably attached to the end face of the web of the secondary beam 5. Both the first electromagnet 41 and the second electromagnet 42 are electrically connected to the power supply 271.

[0065] To improve the accuracy of rack 1 positioning and fixing, refer to Figure 4 and Figure 5 The fixed assembly 4 also includes two support blocks 43 that are elastically slidably connected within the frame 1. The sliding direction of the support blocks 43 is consistent with the height direction of the secondary beam 5. The two support blocks 43 are arranged opposite each other, and the sidewalls of the two support blocks 43 that are far apart from each other are movably protruding from the sidewall of the frame 1 and are respectively movably abutting against the upper and lower flanges of the secondary beam 5. A push block 44 is slidably connected within the frame 1. The sliding direction of the push block 44 is consistent with the sliding direction of the sliding frame 251. The sidewall of the push block 44 near the support block 43 is sharp. The two support blocks 43 are respectively movably abutting against the two inclined surfaces of the push block 44.

[0066] A translation block 45 is fixed on the push block 44. The translation block 45 is movably protruding from the side wall of the frame 1 near the mounting plate 21. A lever block 46 is fixed on the sliding frame 251. The lever block 46 and the translation block 45 are movably pressed against each other on their respective side walls. A second pressure sensor 47 is provided on the translation block 45 to detect the pressure of the lever block 46 pressing against the translation block 45. The second pressure sensor 47 is electrically connected to the controller 11. In this application, the second pressure sensor 47 is a piezoelectric ceramic.

[0067] When positioning and fixing the frame 1, the technicians first hoist the frame 1 onto the secondary beam 5 to be installed, and make the side wall of the second electromagnet 42 close to the first electromagnet 41 fit against the end face of the web of the secondary beam 5, while making the side wall of the first electromagnet 41 away from the frame 1 fit against the side wall of the web of the secondary beam 5.

[0068] Then the technicians start the equipment. At this time, the second power component 253 drives the sliding frame 251 to slide, so that the push block 46 is pressed against and drives the translation block 45 and the push block 44 to slide. This causes the inclined surface of the push block 44 to press against and drive the two support blocks 43 to slide away from each other, so that the two support blocks 43 press against the upper and lower flanges of the secondary beam 5 respectively, until the second pressure sensor 47 reaches the preset pressure value. At this time, the second pressure sensor 47 transmits an electrical signal to the controller 11. The controller 11 controls the second power component 253 to stop working, reducing the risk of excessive sliding of the support blocks 43 causing compression deformation of the flanges of the secondary beam 5.

[0069] At the same time, the power supply 271 energizes the second electromagnet 42, thereby fixing the frame 1 to the center of the secondary beam 5, improving the consistency of the fixed position of the frame 1, thus improving the accuracy of pre-positioning the reamer 22. At this time, the mounting plate 21 and the sliding frame 251 are located on one side of the window of the frame 1, which is less likely to obstruct the installation of bolts and nuts, making it easier for technicians to operate.

[0070] At this point, the side wall of the second electromagnet 42 away from the frame 1 is flush with the side wall of the secondary beam 5 web away from the first electromagnet 41. Then, the technicians move the secondary beam 5 together with the frame 1 to a position where the side walls of the secondary beam 5 web and the stiffening rib 7 are close to each other. Then, the technicians adjust the position of the secondary beam 5 so that the secondary beam 5 corresponds to the bolt holes 8 on the stiffening rib 7. Then, the power supply 271 is turned on to the second electromagnet 42, so that the second electromagnet 42 is magnetically attracted to the stiffening rib 7, realizing the pre-fixation of the secondary beam 5 to the stiffening rib 7. This makes it easy for the technicians to install bolts and nuts. Furthermore, by de-energizing the first electromagnet 41 and the second electromagnet 42, the frame 1 can be disassembled, making it easy for the technicians to lift the frame 1 to the position of the next secondary beam 5, thus improving construction efficiency.

[0071] During construction, technicians can fix the two frames 1 to both ends of the secondary beam 5 respectively, and arrange the frames 1 in a symmetrical arrangement around the center, so that the secondary beam 5 is less likely to generate bending moment and transmit it to the main beam 6, thereby reducing the risk of local stress concentration and torsional deformation of the main beam 6.

[0072] The implementation principle of the integrated device for enlarging and repairing bolt holes in steel structures according to the embodiments of this application is as follows: During construction, the technicians hoist the frame 1 to the secondary beam 5 and make the side wall of the second electromagnet 42 close to the first electromagnet 41 fit with the end face of the web of the secondary beam 5, while making the side wall of the first electromagnet 41 away from the frame 1 fit with the side wall of the web of the secondary beam 5.

[0073] Then the technicians start the equipment. The controller 11 controls the second power component 253 to work, which drives the sliding frame 251 to slide, so that the push block 46 is pressed against and drives the translation block 45 and the push block 44 to slide. This causes the push block 44 to press against and drive the two support blocks 43 to slide away from each other, so that the two support blocks 43 press against the upper and lower flanges of the secondary beam 5 respectively, until the second pressure sensor 47 reaches the preset pressure value and transmits the electrical signal to the controller 11. The controller 11 controls the second power component 253 to stop working. At this time, the power supply 271 powers the second electromagnet 42, so that the frame 1 is fixed in the middle position of the secondary beam 5.

[0074] Then, the technicians moved the secondary beam 5 along with the frame 1 to a position where the secondary beam 5 and the stiffening rib 7 were attached, so that the bolt holes 8 of the secondary beam 5 and the stiffening rib 7 were aligned. The power supply 271 was then energized to the second electromagnet 42, so that the second electromagnet 42 was magnetically attracted to the stiffening rib 7, thus achieving the pre-fixation of the secondary beam 5 to the stiffening rib 7.

[0075] Then the technicians pass the bolts through the bolt holes 8 and tighten the nuts. When it is difficult to pass through some of the bolt holes 8, the technicians use the controller 11 to make the sliding member 25 drive the mounting plate 21 to slide, so that the centering rod 23 and the reamer 22 move to correspond to the misaligned bolt holes 8, thus achieving the pre-positioning of the reamer 22.

[0076] Then the drive unit 26 works, driving the reamer 22 and the centering rod 23 to rotate and move axially until the arched end of the centering wire 241 abuts against the hole wall. The power supply 271 energizes the centering wire 241, putting the centering wire 241 into the first state. At this time, the centering wire 241 undergoes elastic deformation, driving the sliding block 242 to slide close to the fixed block 243. The elastic element 247 abuts against the abutment plate 245 and further abuts against the first pressure sensor 246.

[0077] At this time, the first pressure sensor 246 detects the pressure exerted by the elastic element 247 on the abutment plate 245 and transmits the electrical signal to the controller 11. The controller 11 analyzes and calculates the pressure data to determine the distance between the centering rod 23 and the hole wall at the centering wire 241. At the same time, the controller 11 causes the first power element 252 and the second power element 253 to drive the mounting plate 21 to slide until the difference between the maximum and minimum values ​​of the pressure sensors corresponding to the three centering wires 241 are within the set range. This indicates that the axis of the centering rod 23 is located on the axial geometric center of the misaligned bolt hole 8, thereby achieving the positioning of the centering rod 23 and the reamer 22.

[0078] After the reamer 22 is positioned, the power supply 271 and the centering wire 241 are de-energized. At the same time, the drive component 26 works, driving the reamer 22 to rotate and pass through the bolt hole 8, thereby enlarging the bolt hole 8. With the rotation of the centering rod 23 and the action of the copper wire 31, the centering wire 241 is switched from the first state to the second state.

[0079] Then the drive unit 26 continues to work, first driving the reamer 22 to slowly reverse and retract until the reamer 22 separates from the hole wall, and then driving the reamer 22 and the centering rod 23 to rotate rapidly, so that the copper wire 31 twisted and wrapped on the centering wire 241 rubs against the hole wall after the hole is enlarged, removing the debris adhering to the hole wall, and realizing the cleaning and repair of the hole wall.

[0080] After the hole wall is repaired, the technicians drill holes in the bolts and tighten the nuts to fix the secondary beam 5 to the main beam 6. Then, the technicians de-energize the power supply 271 and the first electromagnet 41 and the second electromagnet 42 to disassemble the frame 1. Then, the technicians hoist the frame 1 to the next secondary beam 5 to achieve continuous cyclic installation and fixation of the secondary beam 5.

[0081] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated device for enlarging and trimming bolt holes in steel structures, characterized in that: It includes a frame (1) and a centering and reaming assembly (2) and a trimming assembly (3) disposed on the frame (1). The centering and reaming assembly (2) is used to locate and ream the axial geometric center of the misaligned bolt hole (8). The trimming assembly (3) is used to clean and trim the debris adhering to the hole wall after reaming. The fixing component (4) is used to position and fix the frame (1) at the corresponding position of the bolt hole (8) of the secondary beam (5) web plate. The frame (1) is provided with a window for easy installation of bolts and hole enlargement and adjustment. The centering and reaming assembly (2) includes a mounting plate (21) slidably disposed on the side wall of the frame (1). A rotatable and axially movable reamer (22) and a centering rod (23) are movably disposed on the mounting plate (21). The centering rod (23) is arranged facing the web of the secondary beam (5) and movably passing through the bolt hole (8). The reamer (22) is coaxially disposed on the end side of the centering rod (23) away from the web of the secondary beam (5). The frame (1) is provided with a detection element (24) for detecting the distance between the centering rod (23) and the wall of the bolt hole (8), a sliding element (25) for driving the mounting plate (21) to slide along the height and length direction of the secondary beam (5), and a driving element (26) for driving the centering rod (23) and the reamer (22) to rotate and move axially.

2. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 1, characterized in that: The detection component (24) includes 3n centering wires (241) disposed on the outer peripheral wall of the centering rod (23). The 3n centering wires (241) are evenly distributed along the outer peripheral wall of the centering rod (23). The centering wires (241) are arched and move against the hole wall of the bolt hole (8), and have elastic deformation capability. Multiple detection blocks are provided on the outer peripheral wall of the centering rod (23), and each detection block corresponds to one of the multiple centering wires (241). Each detection block includes a sliding block (242) and a fixed block (243) provided on the centering rod (23). The sliding block (242) is slidably connected to the centering rod (23). The end of the centering wire (241) near the reamer (22) is connected to the sliding block (242). The fixed block (243) is located on the side of the sliding block (242) away from the centering wire (241). A sliding rod (244) is provided on the side wall of the sliding block (242) near the fixed block (243). The moving rod (244) slides through the fixed block (243). A first pressure sensor (246) is provided on the side wall of the fixed block (243) near the sliding block (242). An abutment plate (245) is provided on the side wall of the first pressure sensor (246) away from the fixed block (243). An elastic element (247) is provided between the abutment plate (245) and the sliding block (242) to make the sliding block (242) slide away from the fixed block (243). A controller (11) is provided on the frame (1). The first pressure sensor (246) and the sliding element (25) are both electrically connected to the controller (11).

3. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 2, characterized in that: The trimming component (3) includes multiple strands of copper wire (31) twisted and wrapped around the outer peripheral wall of the centering wire (241).

4. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 3, characterized in that: The centering wire (241) has a first state and a second state. When the centering wire (241) is in the first state, the centering wire (241) is in a stable arch shape and is in contact with the hole wall of the bolt hole (8) and has elastic deformation capability. When the centering wire (241) is in the second state, the centering wire (241) is in a flexible and relaxed state. The frame (1) is provided with a switching component (27) to switch the centering wire (241) between the first state and the second state.

5. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 4, characterized in that: The centering wire (241) is a nickel-titanium shape memory alloy. The centering wire (241) switches from a first state to a second state when the temperature drops to a preset temperature, and switches from the second state to the first state when the temperature rises to a preset temperature. The switching component (27) includes a power supply (271) disposed on the frame (1). The centering wire (241) is electrically connected to the power supply (271).

6. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 5, characterized in that: The sliding component (25) includes a sliding frame (251) slidably disposed on the side wall of the frame (1), the mounting plate (21) is slidably connected to the sliding frame (251), the sliding direction of the sliding frame (251) is perpendicular to the sliding direction of the mounting plate (21), a first power component (252) for driving the mounting plate (21) to slide and a second power component (253) for driving the sliding frame (251) to slide are installed on the frame (1), and the first power component (252) and the second power component (253) are both electrically connected to the controller (11).

7. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 6, characterized in that: The fixing component (4) includes a first electromagnet (41) and a second electromagnet (42) disposed on the frame (1), wherein the first electromagnet (41) and the second electromagnet (42) are both located on the side of the frame (1) away from the mounting plate (21); The first electromagnet (41) is in movable contact with the side wall of the secondary beam (5) web away from the frame (1), and the second electromagnet (42) is in movable contact with the other side wall of the secondary beam (5) web away from the frame (1), so that when the secondary beam (5) web is in contact with the stiffening rib (7), the second electromagnet (42) is in contact with the side wall of the stiffening rib (7), and the side wall of the second electromagnet (42) near the first electromagnet (41) is in movable contact with the end face of the secondary beam (5) web. Both the first electromagnet (41) and the second electromagnet (42) are electrically connected to the power supply (271).

8. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 7, characterized in that: The fixing component (4) further includes two support blocks (43) that are elastically slidably disposed in the frame (1). The two support blocks (43) are arranged opposite to each other, and the side walls of the two support blocks (43) that are far apart from each other are arranged to protrude from the side wall of the frame (1) and are respectively abutted against the upper and lower flanges of the secondary beam (5). A push block (44) is slidably disposed on the frame (1). The push block (44) is sharp near the side wall of the support block (43). The two support blocks (43) are respectively abutted against the two inclined surfaces of the push block (44) near each other. The push block (44) is provided with a translation block (45), which is movably protruding from the side wall of the frame (1) near the mounting plate (21). The sliding frame (251) is provided with a lever (46), which is movably pressed against the side wall of the translation block (45). The translation block (45) is provided with a second pressure sensor (47) to detect the pressure of the lever (46) pressing against the translation block (45). The second pressure sensor (47) is electrically connected to the controller (11).

9. The integrated device for enlarging and trimming bolt holes in steel structures according to claim 5, characterized in that: The driving component (26) includes a dovetail slide plate (261) slidably disposed on the mounting plate (21) and a third power component (262) for driving the dovetail slide plate (261) to slide. A fourth power component (263) for driving the reamer (22) and the centering rod (23) to rotate is provided on the dovetail slide plate (261). The output end of the fourth power component (263) is connected to the reamer (22).

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