Temporary fixing device for steel structure beam-column joint

Abstract

A kind of steel structure beam column node temporary fixing device, it relates to the field of building steel structure construction technology. Including steel column, crossbeam, support base, bearing support plate, self-locking clamping group and beam end preassembly, support base is fixed on the outside of steel column by bolt, bearing support plate is installed on the upper end of support base, self-locking clamping group is arranged on the top of bearing support plate, beam end preassembly is closed sleeve frame that is set in the end of crossbeam, it can be accurately matched with self-locking clamping group.The present application solves the problems of existing steel structure crossbeam hoisting, such as continuous load holding alignment of lifting equipment, complicated temporary fixing operation, poor stability, high risk of high-altitude operation, etc., realizes self-locking clamping limiting by using the weight of crossbeam, adapts to horizontal and inclined crossbeam installation, does not need crane to continuously occupy position, reduces the difficulty of high-altitude alignment, significantly improves the efficiency of steel structure construction, node stability and high-altitude operation safety, and adapts to the use of various conventional steel.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology, and in particular to a temporary fixing device for steel structure beam-column joints. Background Technology

[0002] In a steel frame system, a load-bearing beam needs to be installed between two parallel steel columns. The beam needs to be hoisted to the corresponding node position of the two steel columns by a crane, and then the beam-column node is permanently fixed by bolts.

[0003] In existing hoisting operations, the crossbeam is easily affected by wind and hoisting operations, which requires the lifting equipment to maintain the load and position it throughout the entire process. This takes up a lot of time for the crane, and it is difficult to quickly and accurately align the two ends of the crossbeam with the insertion interfaces on the steel column. The bolt installation is difficult and the risks of working at height are high.

[0004] In existing technologies, such as the patent with publication number CN113356664A, a beam-column connection node suitable for prefabricated steel structures is disclosed. This node uses a prefabricated steel column with beam support and an upper and lower column butt joint structure with an internal lining plate, allowing for on-site bolted connection for complete installation. This eliminates the need for on-site welding, avoiding the problem of inconsistent on-site welding quality. However, although this technology improves some of the original problems, there are still aspects that require further optimization to better meet the actual needs of steel structure installation and construction. Firstly, during the installation phase, the hoisting mechanism needs to be accurately aligned, and multiple sets of nodes must be completely aligned before bolts can be inserted. Even a slight misalignment will prevent installation. Although on-site welding is not required, workers still need to manually insert multiple bolts, which is time-consuming and cumbersome. Furthermore, the bolts lack a reliable anti-loosening structure, making them prone to loss of preload and loosening under wind and vibration loads.

[0005] Secondly, it requires customized steel columns and beams with special structures, which cannot be used for the installation of conventional national standard steel columns and beams on the market. At the same time, this solution is only applicable to the installation of horizontally placed beams. The beam supports and steel columns are pre-welded at fixed angles in the factory, which cannot be used for scenarios where beams are erected diagonally between two steel columns. When installing diagonal beams, it is impossible to achieve a proper fit and connection with the fixed-angle beam supports. Furthermore, on-site installation still requires continuous alignment with hoisting equipment, which takes up a lot of time and poses a high risk of working at height.

[0006] Therefore, based on the above-mentioned viewpoints, there is still room for optimization and improvement in existing steel structure beam and column installation technologies. Summary of the Invention

[0007] To address the aforementioned problems, the present invention provides a temporary fixing device for steel structure beam-column joints, comprising two parallel steel columns and a crossbeam erected between the two steel columns, wherein a supporting base is bolted to one side of each steel column.

[0008] A support plate is installed on the upper end of the support base, and a self-locking clamping assembly for clamping and limiting one end of the crossbeam is installed on the top of the support plate.

[0009] The self-locking clamping assembly includes several symmetrically distributed sliding guide grooves on the bearing plate. Sliding guide blocks are slidably installed in the sliding guide grooves. The tops of the left and right corresponding sliding guide blocks are jointly installed with clamping upright plates. One end of the crossbeam is located in the corresponding clamping area.

[0010] A vertical groove is provided in the middle of the clamping plate. The bottom of the vertical groove is inclined. An inclined drive folding plate is slidably installed inside the vertical groove. The bottom inclined surface of the inclined drive folding plate is in contact with the inclined surface of the vertical groove. One end of the inclined drive folding plate extends into the clamping area.

[0011] Preferably, the bearing plate has symmetrically provided limiting grooves on both sides, which correspond one-to-one with the two inclined drive plates, and a lateral baffle is installed on one side of the inclined drive plate and inserted into the corresponding limiting groove.

[0012] Preferably, a reset spring is installed between the sliding guide block and the inner wall of the corresponding sliding guide groove.

[0013] An inner recessed cavity is provided on the inner side wall of the limiting groove. An inner extension connecting plate located in the inner recessed cavity is installed on the outer side of the lateral baffle. A rebound top spring is installed between the inner extension connecting plate and the inner wall of the inner recessed cavity.

[0014] Preferably, the outer side of the crossbeam is equipped with a beam end pre-installed component for precise adaptation with the clamping plate. The beam end pre-installed component includes two closed sleeve frames that are fixed to both ends of the crossbeam by bolts, and the closed sleeve frames are located in the corresponding clamping area.

[0015] The bottom sides of the closed frame are provided with bottom side grooves, and one end of the inclined drive plate is located in the corresponding bottom side groove.

[0016] The top of the clamping plate has a top slot, and the outer side of the closed frame is symmetrically fitted with alignment plates located in the corresponding top slots.

[0017] Preferably, the top of the clamping plate and the bottom of the closed sleeve frame are provided with chamfers that are mutually interlocking and compatible.

[0018] The inner side of the top slot and the outer side of the alignment plate are also chamfered to allow for mutual insertion.

[0019] Preferably, the bottom of the closed frame is provided with several positioning bottom holes, and the top of the support plate is provided with several positioning pins that are inserted into the corresponding positioning bottom holes.

[0020] Preferably, the clamping plate is also equipped with a secondary locking assembly for fixing the clamping plate and the closed sleeve frame together. The secondary locking assembly includes several side mounting grooves opened on the clamping plate. A locking cylinder is threaded into the side mounting groove. An axial push plate is slidably installed in the locking cylinder. A locking rod is installed on one side of the axial push plate.

[0021] The closed sleeve frame has several locking holes symmetrically opened on both sides, corresponding to the locking rod, and one end of the locking rod slides through the outer wall of the locking cylinder and is inserted into the corresponding locking hole.

[0022] Preferably, an energy storage spring is installed between the axial push plate and the inner wall of the locking cylinder.

[0023] The outer side of the axial push plate is provided with a locking groove, and a vertical slide frame is installed through the outer side of the locking cylinder. A locking insert plate is slidably installed inside the vertical slide frame.

[0024] Preferably, a driven inclined pressure plate is provided on the outer side of the vertical slide frame extending from the top of the locking plate, and several active top inclined blocks corresponding one-to-one with the driven inclined pressure plate are installed on the top of the bearing plate, and the bent inclined surface on the active top inclined block abuts against the inclined surface of the adjacent driven inclined pressure plate.

[0025] In summary, this application includes at least one of the following beneficial technical effects: I. This invention, by pre-installing a support structure with a self-locking clamping assembly on the outside of the steel column and cooperating with a closed sleeve frame adapter structure pre-installed at the end of the crossbeam, can complete the initial alignment and limiting during the lifting and lowering of the crossbeam, without the need for continuous load holding and alignment by the lifting equipment, thus shortening the time occupied by the crane and reducing the difficulty of high-altitude lifting and alignment operations.

[0026] Second, this invention utilizes the inclined surface transmission and cooperation structure of the clamping upright plate and the inclined drive folding plate. By using the self-weight of the crossbeam and the closed sleeve frame, the two clamping upright plates can be driven to move and tighten towards each other, forming a self-locking clamping limit. No manual operation of the clamping action is required, which simplifies the construction process and effectively avoids the risk of clamping loosening, thus improving the stability of the temporary fixation of the crossbeam.

[0027] Third, by replacing the corresponding and compatible closed-loop frame beam end pre-installed parts, and cooperating with the detachable secondary locking assembly on the clamping plate, this invention can not only meet the permanent fixing needs of rapid construction of small projects, but also provide stable temporary support for special working conditions such as earthquake-prone areas that require welding reinforcement, thereby improving the applicability and scenario adaptability of the device. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the crossbeam of the present invention being erected between two steel columns.

[0030] Figure 2 This is a structural schematic diagram of the supporting base, stiffening diagonal brace, and bearing plate of the present invention.

[0031] Figure 3 This is a schematic diagram of the structure of the self-locking clamping assembly of the present invention.

[0032] Figure 4 This is a cross-sectional view showing the fit between the self-locking clamping assembly and the beam end pre-assembly of the present invention.

[0033] Figure 5 This is a schematic diagram of the closed sleeve frame structure of the present invention.

[0034] Figure 6 This is a schematic diagram of the secondary locking assembly of the present invention.

[0035] Figure 7 This is the present invention. Figure 6 Enlarged view of part of the structure at point A in the middle.

[0036] Figure 8 This is a structural diagram of the support plate of the present invention undergoing angle transformation.

[0037] In the diagram, 1. Crossbeam; 10. Steel column; 11. Support base; 12. Stiffening diagonal brace; 13. Bearing plate; 2. Self-locking clamping assembly; 20. Sliding guide groove; 21. Sliding guide block; 22. Clamping upright plate; 23. Vertical slide groove; 24. Inclined drive folding plate; 25. Lateral baffle; 26. Return spring; 27. Internal cavity; 28. Internal connecting plate; 29. ​​Rebound top spring; 3. Beam end pre-assembly; 30. Closed sleeve frame; 31. Bottom side groove; 32. Top slot; 33. Alignment insert plate; 3 4. Positioning bottom hole; 35. Positioning insert shaft; 36. External connecting wing plate; 37. Through bolt hole; 4. Secondary locking assembly; 40. Side mounting groove; 41. Locking cylinder body; 42. Axial push plate; 43. Locking rod; 44. Locking hole; 45. Energy storage spring body; 46. Positioning slot; 47. Vertical slide frame; 48. Locking insert plate; 49. Driven inclined pressure plate; 410. Active top inclined block; 5. Hinge shaft core; 50. Swing support plate; 51. Arc-shaped sliding plate; 52. Stop through hole; 53. Stop pin shaft. Detailed Implementation

[0038] The following combination Figures 1 to 8 The embodiments of the present invention will be described in detail below.

[0039] This application discloses a temporary fixing device for steel structure beam-column joints, which is used in the process of hoisting and temporarily fixing steel structure beams and columns. It can realize the rapid alignment and self-locking clamping of the beams without the need for continuous load holding by lifting equipment.

[0040] Example 1: Reference Figure 1 and Figure 2 As shown, the structure includes a crossbeam 1, steel columns 10, a supporting base 11, stiffening diagonal braces 12, a bearing plate 13, and a self-locking clamping assembly 2. The crossbeam 1 is erected between two steel columns 10. The supporting base 11 is bolted to one side of the steel column 10. Several stiffening diagonal braces 12 are installed on the outer side of the supporting base 11. The stiffening diagonal braces 12 are bolted to the ear plates extending from the outer side of the steel column 10. The bolts fix the supporting base 11 to the steel column 10. The further bolted connection between the stiffening diagonal braces 12 and the ear plates on the outer side of the steel column 10 can increase the installation firmness and bearing stability of the bearing plate 13.

[0041] A support plate 13 is installed on the upper end of the support base 11. A self-locking clamping assembly 2 for clamping and limiting one end of the crossbeam 1 is installed on the top of the support plate 13. The support base 11 supports the support plate 13, and the support plate 13 supports the self-locking clamping assembly 2. Self-locking clamping assemblies 2 are installed on opposite sides of the two steel columns 10. The two self-locking clamping assemblies 2 clamp and support both ends of the crossbeam 1 respectively, so that the crossbeam 1 can be erected between the two steel columns 10.

[0042] That is, when the steel column 10 is erected, the supporting base 11, the stiffening diagonal brace 12 and the self-locking clamping assembly 2 can be pre-installed on the outside of the steel column 10 to facilitate the direct lifting and installation of the subsequent crossbeam 1.

[0043] Reference Figures 2 to 4 As shown, the self-locking clamping assembly 2 is used to clamp and limit one end of the crossbeam 1. Specifically, the self-locking clamping assembly 2 includes a sliding guide groove 20, a sliding guide block 21, a clamping upright plate 22, a vertical slide groove 23, an inclined drive folding plate 24, a side baffle 25, a reset compression spring 26, an inner cavity 27, an inner extension connecting plate 28, and a rebound top spring 29. Several symmetrically distributed sliding guide grooves 20 are opened at the upper end of the bearing support plate 13. Sliding guide blocks 21 are slidably installed in the sliding guide grooves 20. The tops of the left and right corresponding sliding guide blocks 21 are jointly installed with clamping upright plates 22. The area between the two clamping upright plates 22 forms a clamping area, and one end of the crossbeam 1 is located in the corresponding clamping area.

[0044] The two clamping uprights 22 can move in opposite directions at the upper end of the supporting plate 13. During the movement, the clamping uprights 22 can drive several corresponding sliding guide blocks 21 to move synchronously in the corresponding sliding guide grooves 20. The cooperation between the sliding guide blocks 21 and the sliding guide grooves 20 can limit and guide the movement of the clamping uprights 22.

[0045] A vertical groove 23 is provided in the middle of the clamping plate 22. The bottom of the vertical groove 23 is inclined. An inclined drive folding plate 24 is slidably installed inside the vertical groove 23. The bottom inclined surface of the inclined drive folding plate 24 abuts against the inclined surface of the vertical groove 23. One end of the inclined drive folding plate 24 extends into the clamping area. The two sides of the supporting plate 13 are symmetrically provided with limiting grooves corresponding to the two inclined drive folding plates 24. A lateral baffle 25 is installed on one side of the inclined drive folding plate 24 and inserted into the corresponding limiting groove.

[0046] The inclined drive folding plate 24 can move up and down within the vertical slide groove 23. During the movement, the inclined surface at its bottom engages with the inclined surface of the vertical slide groove 23, so that when the inclined drive folding plate 24 moves downward, it can drive the corresponding clamping upright plate 22 to move towards the middle of the bearing support plate 13. The inclined drive folding plate 24 can simultaneously drive the side baffle 25 to move within the limiting groove. The limiting groove guides the inclined drive folding plate 24 through the side baffle 25.

[0047] A reset spring 26 is installed between the sliding guide block 21 and the inner wall of the corresponding sliding guide groove 20. An inner cavity 27 is opened on the inner wall of the limiting groove. An inner extension plate 28 located in the inner cavity 27 is installed on the outer side of the lateral baffle 25. A rebound top spring 29 is installed between the inner extension plate 28 and the inner wall of the inner cavity 27.

[0048] The reset spring 26 is used to drive the clamping plate 22 to be in an open state on one side in the initial state through the sliding guide block 21 to prevent it from shaking. Similarly, the rebound spring 29 limits the height of the inclined drive folding plate 24 in the initial state through the inner extension connecting plate 28 and the side baffle 25. That is, in the initial state, the bottom of the inclined drive folding plate 24 does not contact the inclined surface of the vertical slide groove 23.

[0049] Reference Figures 2 to 6 As shown, a beam end pre-installed component 3 for precise adaptation with the clamping upright plate 22 is installed on the outer side of the crossbeam 1. Specifically, the beam end pre-installed component 3 includes a closed sleeve frame 30, a bottom side groove 31, a top slot 32, an alignment insert plate 33, a positioning bottom hole 34, a positioning insert shaft 35, an outer connecting wing plate 36, and a through bolt hole 37. The two closed sleeve frames 30 are respectively sleeved on both ends of the crossbeam 1 by bolt fixing. The two closed sleeve frames 30 are located in the corresponding clamping areas, that is, the two corresponding clamping upright plates 22 can clamp the two sides of the closed sleeve frame 30 respectively, thereby indirectly achieving limited clamping of the two sides of the crossbeam 1. The setting of the closed sleeve frame 30 can increase the contact area between the clamping upright plate 22 and the crossbeam 1, improve the clamping stability, and the closed sleeve frame 30 can be flexibly selected in different sizes according to different specifications of the crossbeam 1, increasing applicability.

[0050] The bottom sides of the closed frame 30 are provided with bottom side grooves 31, and one end of the inclined drive folding plate 24 is located in the bottom side groove 31. The top of the clamping plate 22 is provided with a top slot 32. The outer side of the closed frame 30 is symmetrically installed with corresponding alignment plates 33 located in the corresponding top slots 32. The top of the clamping plate 22 and the bottom of the closed frame 30 are both provided with chamfers that are mutually plugged and adapted. The inner side of the top slot 32 and the outer side of the alignment plate 33 are also provided with chamfers that are mutually plugged and adapted.

[0051] In other words, in the initial installation state, the construction personnel can first fix the two closed sleeve frames 30 to the two ends of the crossbeam 1 on the ground, and then use the lifting equipment to lift the crossbeam 1 horizontally as a whole, so that the closed sleeve frames 30 at both ends of the crossbeam 1 are aligned with the self-locking clamping groups 2 on the steel columns 10 on both sides; then control the crossbeam 1 to descend at a uniform speed, so that the closed sleeve frames 30 fall into the clamping area of ​​the corresponding self-locking clamping group 2.

[0052] In the initial state, the two clamping uprights 22 maintain a large opening range under the action of the reset spring 26, which can reduce the alignment accuracy requirements when the closed frame 30 falls, and provide sufficient space for the closed frame 30 to fall into the clamping area, making it easy for the closed frame 30 to fall into position quickly; at the same time as the closed frame 30 falls, the alignment insert 33 fixed on its outer side will be simultaneously inserted into the corresponding top slot 32 at the top of the clamping uprights 22.

[0053] Among them, the mutually adaptable guide chamfers opened on the top end face of the clamping plate 22 and the bottom end face of the closing sleeve 30 can guide the closing sleeve 30 to fall quickly and smoothly into the clamping area between the two clamping plates 22 during the process of the closing sleeve 30 falling to the clamping area; the mutually cooperating guide chamfers opened on the inner side wall of the top slot 32 and the outer side wall of the alignment plate 33 guide the alignment plate 33 to be inserted into the top slot 32.

[0054] After the alignment plate 33 and the top slot 32 are connected, they can form a lateral limit in the left and right directions for the closed sleeve frame 30 and the crossbeam 1, preventing the crossbeam 1 from shifting laterally during descent and subsequent use, and ensuring that the closed sleeve frame 30 at both ends of the crossbeam 1 is always accurately aligned with the self-locking clamping groups 2 on both sides.

[0055] As the closed frame 30 continues to descend under its own weight, due to the opening of the bottom groove 31, the closed frame 30 and the side corresponding to the inclined drive plate 24 form a structure that is wider at the top and narrower at the bottom. The area at the bottom corresponding to the bottom groove 31 is a narrow side section with a narrower width. After the closed frame 30 enters the clamping area and completes the initial positioning through the cooperation of the guide chamfer, the alignment plate 33 and the top slot 32, the narrow side section at the bottom is inserted first into the gap between the ends of the two inclined drive plates 24 that extend into the clamping area.

[0056] As the closed frame 30 continues to fall, the inner top wall of the bottom groove 31 contacts the top end face of the inclined drive plate 24. The weight of the crossbeam 1 and the closed frame 30 exerts a continuous downward pressure on the inclined drive plate 24 through the inner top wall of the bottom groove 31, driving the inclined drive plate 24 to move downward along the vertical slide 23. During the downward movement of the inclined drive plate 24, the mating inclined surface at its bottom continuously abuts against the guide inclined surface of the vertical slide 23. The horizontal component of the inclined surface transmission drives the two clamping upright plates 22 to move towards each other, gradually reducing the width of the clamping area and forming a gradually tightening clamping limit on both sides of the closed frame 30.

[0057] The closing frame 30 stops falling when its bottom end face falls completely into contact with the upper end face of the support plate 13. At this time, the end of the inclined drive plate 24 is fully inserted into the bottom groove 31 under the elastic force of the return spring 29, while the top end face of the inclined drive plate 24 remains in contact with the inner top wall of the bottom groove 31. The weight of the crossbeam 1 and the closing frame 30 continuously applies a downward pressing force to the inclined drive plate 24 through the inner top wall of the bottom groove 31, keeping the inclined drive plate 24 in a downward pressing state and preventing it from returning to its original position. This downward pressure is continuously converted into a counter-clamping force on the clamping plate 22 through the inclined surface fit, ensuring that the clamping plate 22 always maintains a stable clamping state on both sides of the closing frame 30 and will not be driven to open by the return spring force of the return spring 26, forming a self-locking clamping structure, avoiding the risk of clamping loosening and ensuring the stability of the clamping limit.

[0058] At this point, the clamping plate 22 has completed the front-back and left-right direction limiting and fixing of the crossbeam 1 through the closed sleeve frame 30.

[0059] The bottom of the closed frame 30 is provided with several positioning bottom holes 34, and the top of the bearing plate 13 is provided with several positioning pins 35 that are inserted into the corresponding positioning bottom holes 34. After the bottom of the closed frame 30 contacts the upper end of the bearing plate 13, the positioning pins 35 will be inserted into the positioning bottom holes 34 simultaneously to further limit the transverse beam 1 laterally.

[0060] Meanwhile, an outer connecting wing plate 36 can be welded onto the closed sleeve frame 30. Through holes 37 can be opened on both the outer connecting wing plate 36 and the closed sleeve frame 30 for external bolts to be inserted.

[0061] For special working conditions, such as earthquake-prone areas and other special construction projects, where welding reinforcement and multi-point bolt rigid fixation are required between the crossbeam 1 and the steel column 10, the closed sleeve 30 can increase the contact area between the crossbeam 1 and the steel column 10 and improve the structural stability of the connection node; at the same time, this self-locking clamping assembly 2 can serve as a temporary support structure after the crossbeam 1 is hoisted. After the crane completes the hoisting of the crossbeam 1, it can be moved away without occupying space and waiting.

[0062] Construction workers can weld the outer connecting wing plate 36 onto the closed frame 30, and then weld and fix it to the corresponding steel column 10 through the outer connecting wing plate 36. Alternatively, external bolts can be inserted through the bolt through hole 37 to rigidly connect the closed frame 30 to the steel column 10. After the initial rigid fixation of the beam 1 to the steel column 10 is completed, the supporting base 11, the stiffening brace 12, and the self-locking clamping group 2 can be removed from the outside of the steel column 10. Then, the parts of the closed frame 30 that are covered by the self-locking clamping group 2 can be welded and fixed to complete the final installation of the beam 1.

[0063] Reference Figure 6 and Figure 7 As shown, a secondary locking assembly 4 for fixing the clamping upright plate 22 to the closed sleeve frame 30 is also installed on the clamping upright plate 22; specifically, the secondary locking assembly 4 includes a side mounting groove 40, a locking cylinder 41, an axial push plate 42, a locking rod 43, a locking hole 44, an energy storage spring 45, a locking slot 46, a vertical slide frame 47, a locking insert plate 48, a driven inclined pressure plate 49, and an active top inclined block 410. Several side mounting grooves 40 are opened at the upper end of the clamping upright plate 22. A locking cylinder 41 is inserted into the 40 via a threaded connection. An axial push plate 42 is slidably installed inside the locking cylinder 41. A locking rod 43 is fixedly installed on one side of the axial push plate 42. Several locking holes 44 corresponding to the locking rod 43 are symmetrically opened on both sides of the closed sleeve frame 30. One end of the locking rod 43 slides through the outer wall of the locking cylinder 41 and is inserted into the corresponding locking hole 44. An energy storage spring 45 is installed between the axial push plate 42 and the inner wall of the locking cylinder 41.

[0064] The energy storage spring 45 can push the axial push plate 42 to translate along the inner wall of the locking cylinder 41, so that the axial push plate 42 drives the locking rod 43 to move synchronously toward the locking hole 44, thereby driving the locking rod 43 to feed into the corresponding locking hole 44, so that the locking rod 43 is directly inserted into the corresponding locking hole 44 during the translational feeding process.

[0065] By inserting and locking the locking rod 43 into the locking hole 44, the clamping plate 22 can be firmly fixed on both sides of the closed frame 30, eliminating the risk of the clamping plate 22 springing open under external force. At the same time, the locking rod 43 inserted into the locking hole 44 can form a vertical limiting constraint on the closed frame 30, restricting the vertical displacement of the closed frame 30 and the crossbeam 1, and preventing the crossbeam 1 from vertically lifting and detaching when subjected to vibration or load impact.

[0066] Ultimately, with the combined action of the front and rear clamping limits of the clamping plate 22, the lateral limit of the positioning shaft 35, and the side insertion limit of the locking rod 43, the crossbeam 1 can be stably fixed in all directions by the closed sleeve frame 30, thereby improving the structural stability and anti-disturbance capability of the crossbeam 1 after installation.

[0067] A locking groove 46 is provided on the outer side of the axial push plate 42. A vertical slide frame 47 is installed through the outer side of the locking cylinder body 41. A locking insert plate 48 is slidably installed inside the vertical slide frame 47. A driven inclined pressure plate 49 is provided on the outer side of the vertical slide frame 47 from the top of the locking insert plate 48. Several active top inclined blocks 410 corresponding to the driven inclined pressure plates 49 are installed on the top of the bearing support plate 13. The bent inclined surface on the active top inclined block 410 abuts against the inclined surface of the adjacent driven inclined pressure plate 49.

[0068] That is, in the initial installation state, the locking groove 46 of the axial push plate 42 is precisely aligned with the vertical slide frame 47 and the locking insert plate 48. The lower end of the locking insert plate 48 is inserted into the locking groove 46, and the locking insert plate 48 forms an axial limit on the axial push plate 42, preventing the axial push plate 42 from moving horizontally along the inner cavity of the locking cylinder body 41. At this time, the energy storage spring body 45 is in a compressed and stored state. When the clamping upright plate 22 completes the opposite movement and forms a stable clamp on the closed sleeve frame 30, the driven inclined pressure plate 49 at the top of the locking insert plate 48 is exactly aligned with the active top on the bearing support plate 13. The inclined blocks 410 are aligned and contact each other. Through the contact and cooperation of their inclined surfaces, the active inclined block 410 applies a downward component force to the driven inclined pressure plate 49, causing the locking insert plate 48 to slide downward along the vertical slide frame 47, so that the lower end of the locking insert plate 48 is disengaged from the locking slot 46, releasing the limiting constraint on the axial push plate 42. At this time, the elastic force of the energy storage spring body 45 is released, pushing the axial push plate 42 to move horizontally along the inner cavity of the locking cylinder body 41, thereby driving the locking rod 43 to move horizontally forward and directly insert into the corresponding locking hole 44, completing the locking and fixing of the clamping plate 22 and the closing sleeve frame 30.

[0069] For different construction scenarios, the locking cylinder 41 adopts a threaded, detachable design, allowing workers to decide whether to install it based on actual needs. For small-scale construction projects, the beam 1 can be erected between the steel columns 10 simply by bolting. Workers can pre-install the locking cylinder 41 into the corresponding side mounting slot 40. Through this process, the beam 1 can be automatically and securely fixed after being hoisted onto the self-locking clamping assemblies 2 on both sides, eliminating the need for workers to perform additional reinforcement at height and improving construction efficiency.

[0070] In special construction scenarios requiring welding, such as earthquake-prone areas mentioned above, this device can be used only for temporary support. In such cases, the locking cylinder 41 can be omitted. After the crossbeam 1 and steel column 10 are welded and fixed, the self-locking clamping assembly 2 can be removed as a whole. Only in small-scale engineering scenarios where welding is not required and rapid assembly is the core requirement, the locking cylinder 41 can be installed into the side mounting groove 40 to achieve the final fixation of the closed frame 30.

[0071] Example 2: Reference Figure 8As shown, based on Embodiment 1, in order to adapt to the inclined beam 1, a hinged shaft core 5 is provided between several stiffening diagonal braces 12. A swing support plate 50 is rotatably sleeved on the outer side of the hinged shaft core 5. The top of several swing support plates 50 is connected to the bottom of the bearing support plate 13. Several arc-shaped grooves are opened inside the bearing base 11. An arc-shaped sliding plate 51 is slidably installed in the arc-shaped groove. The top of the arc-shaped sliding plate 51 passes through the outside of the arc-shaped groove and connects to the bottom of the bearing support plate 13. Several stop holes 52 are opened on the arc-shaped sliding plate 51. A stop pin 53 is threaded through the bearing base 11, with its outer side passing through one of the stop holes 52.

[0072] That is, in this embodiment, the bearing plate 13 is no longer fixedly connected to the upper end of the supporting base 11. In specific implementation, the angle of the bearing plate 13 can be adjusted by flipping according to the slope angle of the crossbeam 1 to be installed on the steel columns 10 on both sides. During the flipping process of the bearing plate 13, the bottom swing support plate 50 will rotate synchronously on the hinge shaft core 5, and the arc-shaped sliding plate 51 will also follow the flipping of the bearing plate 13 and slide synchronously in the arc groove. Several swing support plates 50 and arc-shaped sliding plates 51 can provide stable support for the bearing plate 13 throughout the process.

[0073] After the angle adjustment is completed, screw the stop pin 53 into the support base 11, so that the end of the stop pin 53 is inserted into the corresponding stop hole 52 on the arc-shaped slide plate 51 to lock and fix the arc-shaped slide plate 51, thereby fixing the swing angle of the support plate 13 and ensuring that the support plate 13 will not shift in angle during subsequent installation.

[0074] Furthermore, during the installation of the inclined beam 1, the closed sleeves 30 at both ends of the beam 1 are moved to the corresponding clamping area. The insertion and engagement of the top slot 32 and the alignment plate 33, as well as the alignment and locking of the positioning shaft 35 and the positioning bottom hole 34, can form a lateral limit on the beam 1, ensuring that the beam 1 will not slip or move along its inclined direction when it is in the inclined installation state, thus ensuring the installation stability of the beam 1 under inclined conditions.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0076] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A temporary fixing device for a steel structure beam-column joint, comprising two parallel steel columns (10) and a crossbeam (1) erected between the two steel columns (10), characterized in that: A support base (11) is bolted to one side of the steel column (10); The upper end of the support base (11) is equipped with a support plate (13), and the top of the support plate (13) is equipped with a self-locking clamping assembly (2) for clamping and limiting one end of the crossbeam (1). The self-locking clamping assembly (2) includes several symmetrically distributed sliding guide grooves (20) opened on the bearing plate (13). Sliding guide blocks (21) are slidably installed in the sliding guide grooves (20). The tops of the left and right corresponding sliding guide blocks (21) are jointly installed with clamping upright plates (22). One end of the crossbeam (1) is located in the corresponding clamping area. A vertical groove (23) is provided in the middle of the clamping plate (22). The bottom of the vertical groove (23) is inclined. An inclined drive folding plate (24) is slidably installed inside the vertical groove (23). The bottom inclined surface of the inclined drive folding plate (24) is in contact with the inclined surface of the vertical groove (23). One end of the inclined drive folding plate (24) extends into the clamping area.

2. The temporary fixing device for steel structure beam-column joints according to claim 1, characterized in that: The support plate (13) has symmetrically provided limiting grooves on both sides, which correspond one-to-one with the two inclined drive plates (24). A lateral baffle (25) is installed on one side of the inclined drive plate (24) and inserted into the corresponding limiting groove.

3. The temporary fixing device for steel structure beam-column joints according to claim 1, characterized in that: A reset spring (26) is installed between the sliding guide block (21) and the inner wall of the corresponding sliding guide groove (20). An inner recessed cavity (27) is provided on the inner side wall of the limiting groove. An inner extension connecting plate (28) located in the inner recessed cavity (27) is installed on the outer side of the side baffle (25). A rebound top spring (29) is installed between the inner extension connecting plate (28) and the inner wall of the inner recessed cavity (27).

4. The temporary fixing device for steel structure beam-column joints according to claim 1, characterized in that: The outer side of the crossbeam (1) is equipped with a beam end pre-installed component (3) for precise adaptation with the clamping plate (22). The beam end pre-installed component (3) includes two closed sleeve frames (30) that are fixed to both ends of the crossbeam (1) by bolts. The closed sleeve frames (30) are located in the corresponding clamping area. The bottom sides of the closed frame (30) are provided with bottom side grooves (31), and one end of the inclined drive plate (24) is located in the corresponding bottom side groove (31); The top of the clamping plate (22) is provided with a top slot (32), and the outer side of the closed frame (30) is symmetrically equipped with a positioning plate (33) located in the corresponding top slot (32).

5. The temporary fixing device for steel structure beam-column joints according to claim 4, characterized in that: Both the top of the clamping plate (22) and the bottom of the closed sleeve (30) are provided with chamfers that can be inserted and adapted to each other; The inner side of the top slot (32) and the outer side of the aligning plate (33) are also provided with chamfers for mutual insertion and mating.

6. The temporary fixing device for steel structure beam-column joints according to claim 4, characterized in that: The bottom of the closed frame (30) is provided with several positioning bottom holes (34), and the top of the support plate (13) is provided with several positioning inserts (35) that are inserted into the corresponding positioning bottom holes (34).

7. The temporary fixing device for steel structure beam-column joints according to claim 4, characterized in that: The clamping plate (22) is also equipped with a secondary locking assembly (4) for fixing the clamping plate (22) and the closed sleeve frame (30) together. The secondary locking assembly (4) includes several side mounting grooves (40) opened on the clamping plate (22). A locking cylinder (41) is threaded into the side mounting groove (40). An axial push plate (42) is slidably installed in the locking cylinder (41). A locking rod (43) is installed on one side of the axial push plate (42). The closed sleeve frame (30) has several locking holes (44) symmetrically opened on both sides, corresponding to the locking rod (43), and one end of the locking rod (43) slides through the outer wall of the locking cylinder (41) and is inserted into the corresponding locking hole (44).

8. The temporary fixing device for steel structure beam-column joints according to claim 7, characterized in that: An energy storage spring (45) is installed between the axial push plate (42) and the inner wall of the locking cylinder (41). A locking slot (46) is provided on the outer side of the axial push plate (42), and a vertical slide frame (47) is installed through the outer side of the locking cylinder (41). A locking insert plate (48) is slidably installed inside the vertical slide frame (47).

9. The temporary fixing device for steel structure beam-column joints according to claim 8, characterized in that: The top of the locking plate (48) extends into a vertical slide frame (47) with a driven inclined plate (49) on the outside. The top of the bearing plate (13) is equipped with several active top inclined blocks (410) that correspond one-to-one with the driven inclined plate (49), and the bent inclined surface on the active top inclined block (410) abuts against the inclined surface of the adjacent driven inclined plate (49).

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