A prefabricated steel structure building connecting device

Abstract

The present application relates to the technical fields of building components, in particular to a kind of assembled steel structure building connecting device, including assembly seat, assembly seat is fixed in the top of stand column, and it is hollow cylinder shape with opening upwards, four sides on assembly seat are respectively provided with hinged traction mechanism in the form of penetration, the end of each hinged traction mechanism located outside assembly seat is provided with connecting plate, and connecting plate is used to be fixed with the end of crossbeam;Adjusting mechanism is arranged in assembly seat, and the end of each hinged traction mechanism located in assembly seat is drivingly connected with adjusting mechanism.The present application is driven to move connecting plate to the side away from assembly seat by the cooperation of adjusting mechanism and hinged traction mechanism, two-stage universal hinge between connecting plate and adjusting mechanism is formed by using hinged traction mechanism, so that the crossbeam with end and connecting plate fixed has the ability of multidirectional activity adjustment when being matched, the flexibility of matching adjustment and the reliability of temporary fixation are considered, and the matching precision and construction safety are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of building component technology, specifically to a prefabricated steel structure building connection device. Background Technology

[0002] Prefabricated steel structure buildings are a new type of building that uses steel as the core load-bearing material. Key components such as beams, columns, floor slabs, and wall panels are prefabricated in a standardized manner in a factory, transported to the construction site, and assembled using bolts, welding, and other methods. In existing steel structure buildings, when assembling beams and columns, mounting bases are usually fixed on the columns, and the ends of the beams are positioned and inserted into the mounting bases. The beams and mounting bases are then fixed by bolts or welding to achieve the connection of the beam-column joints.

[0003] During actual construction, the position of the crossbeam needs to be constantly adjusted so that the two ends of the crossbeam are accurately assembled with the mounting seats on the two side columns. At the same time, in order to prevent the crossbeam from slipping during the assembly process, the workers will first use bolts to fix the ends of the crossbeam to the mounting seats. If the bolts are tightened too much, the crossbeam will have poor mobility, which is not conducive to adjustment and assembly. If the bolts are tightened too much, there is still a risk of slipping. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated steel structure building connection device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A prefabricated steel structure building connection device includes an assembly base, which is fixed to the top of a column and is a hollow cylindrical shape with an upward-facing opening. Four hinged traction mechanisms are provided through the assembly base on its four sides. Each hinged traction mechanism has a connecting plate at its outer end, which is used to fix the end of a crossbeam. An adjustment mechanism is provided inside the assembly base. One end of each hinged traction mechanism is connected to the adjustment mechanism. Each connecting plate is hinged to the adjustment mechanism via its corresponding hinged traction mechanism. Through the cooperation of the adjustment mechanism and the hinged traction mechanism, each connecting plate can be moved simultaneously towards or away from the axis of the assembly base. When the connecting plate moves towards the axis of the assembly base, it pulls the crossbeam connected to its end toward the assembly base. When the connecting plate moves away from the axis of the assembly base, it releases the tension on the crossbeam, allowing for multi-directional adjustment of the crossbeam during assembly.

[0007] Preferably, the adjusting mechanism includes a shaft, a toothed roller, a movable plate, a first rack, and a driving device; the shaft is vertically rotatably mounted on the inner bottom wall of the mounting base, and the toothed roller is fixedly mounted on the shaft; the driving device is located inside the mounting base and above the shaft, and is used to drive the shaft to rotate for adjustment; a slide rail extending horizontally toward the shaft is fixed on the inner wall of the mounting base and below each articulated traction mechanism; a movable plate is slidably mounted on each slide rail, and one end of each articulated traction mechanism located inside the mounting base is connected to the movable plate at the corresponding position; a first rack is fixed on the side surface of each movable plate facing the shaft; each first rack meshes with the toothed roller; the driving device includes a worm and a worm wheel; the worm wheel is fixed to the top of the shaft, the worm is rotatably mounted inside the mounting base, and meshes with the worm wheel accordingly.

[0008] Preferably, the four first toothed racks are distributed on the four sides of the toothed roller and are arranged in a staggered manner from top to bottom.

[0009] Preferably, the articulated traction mechanism includes a traction arm, a ball-joint hinge, and a mounting head; the traction arm is mounted through the side wall of the mounting base, and one end of the traction arm located inside the mounting base is universally hinged to the moving plate via the ball-joint hinge; the mounting head is universally hinged to the end of the traction arm located outside the mounting base via the ball-joint hinge; and the connecting plate is correspondingly fixed to the mounting head.

[0010] Preferably, a positioning seat is fixed on the outer side of the mounting base corresponding to the position of each traction arm. Each positioning seat is provided with a hemispherical groove with the opening facing outward horizontally. The traction arm passes through the hemispherical groove accordingly. The mounting head is a hemispherical structure and its shape matches the hemispherical groove. When the crossbeam is pulled to the limit position, the mounting head is fitted into the hemispherical groove. At the same time, the connecting plate matches and abuts against the side surface of the positioning seat.

[0011] Preferably, the side wall of the mounting base and the positioning base are provided with a horizontally extending movable hole, which is coaxially arranged with the hemispherical groove; one end of the movable hole is connected to the hemispherical groove, and the other end is connected to the interior of the mounting base; the traction arm passes through the movable hole, and the diameters of the traction arm and the ball-head hinge are both smaller than the diameter of the movable hole.

[0012] Preferably, side seats are fixed on the outer surface of the mounting base and below each connecting plate, and a pair of fastening side plates are slidably installed on each side seat; each side seat is provided with a linkage mechanism for driving the two fastening side plates to move closer or further apart, and the linkage mechanism is in transmission cooperation with the hinge traction mechanism; the fastening side plates are C-shaped and match the structure of the recessed part on the side of the crossbeam, and each fastening side plate is provided with several second fastening holes; when the adjustment mechanism cooperates with the hinge traction mechanism to pull the crossbeam toward the axis of the mounting base, the linkage energy of the linkage mechanism drives the two fastening side plates to move closer to each other; when the crossbeam is pulled to the limit position, the two fastening side plates are correspondingly matched and locked into the recessed parts on both sides of the crossbeam, and at the same time, the second fastening holes on the fastening side plates are aligned with the first fastening holes on the crossbeam.

[0013] Preferably, two through slots are symmetrically provided on the side seat, and a groove is provided on the lower surface of the side seat. A sliding groove communicating with the groove is provided on the side wall of the mounting base at the position corresponding to each side seat. The linkage mechanism includes a bidirectional threaded rod, a nut seat, an adjusting gear, and a second rack. A sliding rod is fixed on the side seat and extends through the two through slots. A nut seat is provided in each of the two through slots on the side seat, and the nut seat is slidably fitted on the sliding rod, while the nut seat slides against the inner wall of the through slot. A bidirectional threaded rod is rotatably installed in the groove, and the two sides of the bidirectional threaded rod extend into the two through slots respectively. Two nut seats are threadedly fitted on both sides of the bidirectional threaded rod. A second rack is fixed on the side of each moving plate away from the axis of the mounting base. The second rack slides through the corresponding sliding groove and extends into the corresponding groove. The adjusting gear is located in the groove and fixedly fitted on the bidirectional threaded rod, and the adjusting gear meshes with the second rack. The fastening side plates are fixed on the corresponding nut seats respectively.

[0014] Preferably, two adjacent movable plates are equipped with plug rods on their inner sides, and two other movable plates are provided with plug holes on their inner sides; the plug rods distributed on opposite sides are aligned with the plug holes; when the crossbeam is stretched to its limit position, the two plug rods can be aligned and inserted into the corresponding plug holes.

[0015] Preferably, the outer wall of the worm gear is provided with several screw holes around its axis.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0017] 1. This invention uses the cooperation of the adjustment mechanism and the hinge traction mechanism to drive the connecting plate to move synchronously to the side away from the assembly seat. The hinge traction mechanism enables a two-stage universal hinge between the connecting plate and the adjustment mechanism, so that the crossbeam fixed at the end to the connecting plate has the ability to move and adjust in multiple directions during assembly. This takes into account the flexibility of assembly adjustment and the reliability of temporary fixation, ensuring assembly accuracy and construction safety.

[0018] 2. The worm gear and worm wheel meshing form a one-way transmission self-locking structure, which can prevent the toothed roller from rotating arbitrarily in the non-adjusted state, ensure the long-term stability of the crossbeam position after tensioning, and avoid the problem of loosening caused by vibration and load changes, thereby improving the safety of the beam-column joint connection structure.

[0019] 3. When the crossbeam is tightened to its limit position, the mounting head can be precisely fitted into the hemispherical groove, and the connecting plate and the side surface of the positioning seat match and abut, forming a double positioning constraint, avoiding displacement deviation at the end of the crossbeam during subsequent fixing, and ensuring that the second fastening hole and the first fastening hole are precisely aligned.

[0020] 4. A linkage mechanism is formed by linking the linkage mechanism and the adjustment mechanism. When the adjustment mechanism drives the connecting plate to tighten the crossbeam, the fastening side plate is simultaneously engaged and locked into the recess on the side of the crossbeam. This automatically aligns the second fastening hole with the first fastening hole, achieving multiple fixation of the crossbeam end to the connecting plate and the fastening side plate, enhancing the load-bearing capacity and structural stability of the connection. In addition, the linkage mechanism provides driving force for adjusting the spacing of the fastening side plates by moving the moving plate, eliminating the need for additional operation to adjust the spacing between the two fastening side plates, reducing operation steps, and thus effectively improving assembly and construction efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a partial structural diagram of the present invention;

[0023] Figure 3 for Figure 2 The structural diagram shown omits the columns and beams.

[0024] Figure 4 for Figure 3 A cross-sectional schematic diagram of the structure shown;

[0025] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 6 This is a schematic diagram of a partial structure of the outer side of the mounting base in this invention;

[0027] Figure 7 This is a schematic diagram of the articulated traction mechanism in this invention;

[0028] Figure 8 This is a schematic diagram of the adjustment mechanism structure in this invention;

[0029] Figure 9 This is a schematic diagram of the first rack and toothed roller structure in this invention;

[0030] Figure 10 for Figure 9 Another perspective view of the structure shown;

[0031] Figure 11 This is a partial structural diagram of the side seat in this invention;

[0032] Figure 12 This is a schematic diagram of the bottom structure of the side seat in this invention;

[0033] Figure 13 This is a schematic diagram showing the distribution of the connector rod and connector hole structure.

[0034] In the diagram: 01, column; 02, crossbeam; 021, first fastening hole; 1, assembly seat; 11, positioning seat; 12, hemispherical groove; 13, movable hole; 14, slide groove; 2, articulated traction mechanism; 21, traction arm; 22, ball-head hinge; 23, mounting head; 3, connecting plate; 4, adjusting mechanism; 41, shaft; 42, toothed roller; 43, moving plate; 431, slide rail; 432, plug rod; 433, plug hole; 44, first rack; 45, worm gear; 451, screwing hole; 46, worm wheel; 5, side seat; 51, through groove; 52, groove; 6, fastening side plate; 61, second fastening hole; 7, linkage mechanism; 71, double-threaded rod; 72, nut seat; 721, slide rod; 73, adjusting gear; 74, second rack. Detailed Implementation

[0035] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0037] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0038] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0039] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0040] Example 1:

[0041] Please see Figures 1-13 This invention provides a prefabricated steel structure building connection device, including an assembly base 1, which is fixed to the top of a column 01 and is a hollow cylindrical shape with the opening facing upward. The assembly base 1 can be circular or rectangular. The four sides of the assembly base 1 are respectively provided with hinged traction mechanisms 2. Each hinged traction mechanism 2 is provided with a connecting plate 3 at one end outside the assembly base 1. The end of the crossbeam 02 can be fixed to the connecting plate 3 by bolts. An adjustment mechanism 4 is provided inside the assembly base 1. The end of each hinged traction mechanism 2 inside the assembly base 1 is connected to the adjustment mechanism 4. Each connecting plate 3 is hinged to the adjustment mechanism 4 through the corresponding hinged traction mechanism 2. Through the cooperation of the adjustment mechanism 4 and the hinged traction mechanism 2, each connecting plate 3 can be driven to move simultaneously toward or away from the axis of the assembly base 1.

[0042] Specifically, when the connecting plate 3 moves toward the axis of the mounting base 1, it can pull the crossbeam 02, whose end is connected to the connecting plate 3, toward the mounting base 1. When the connecting plate 3 moves away from the axis of the mounting base 1, it can release the tension on the crossbeam 02 so that the crossbeam 02 can be adjusted in multiple directions during assembly.

[0043] Side seats 5 are fixed on the outer surface of the mounting base 1 and below each connecting plate 3. A pair of fastening side plates 6 are slidably installed on each side seat 5. The two fastening side plates 6 and the side seats 5 form a U-shaped structure with an open top. When the crossbeam 02 is fixed to the connecting plate 3, the end of the crossbeam 02 is located in the U-shaped structure formed by the two fastening side plates 6 and the side seats 5.

[0044] Each side seat 5 is provided with a linkage mechanism 7 for driving the two fastening side plates 6 to move closer or further apart. The linkage mechanism 7 is in transmission cooperation with the hinge traction mechanism 2. The fastening side plate 6 is C-shaped and matches the structure of the recessed part of the side of the crossbeam 02. Each fastening side plate 6 is provided with a number of second fastening holes 61. The spacing of the second fastening holes 61 is consistent with the spacing of the first fastening holes 021 at the end of the crossbeam 02.

[0045] When assembling beams and columns, firstly, by operating the adjustment mechanism 4, under the traction of the hinge traction mechanism 2, each connecting plate 3 is moved to the side away from the axis of the assembly seat 1. Then, the end of the crossbeam 02 is placed on the side seat 5 and located between the two fastening side plates 6, and fixed with the connecting plate 3 to prevent the end of the crossbeam 02 from falling off the side seat 5. Since the connecting plate 3 is hinged to the adjustment mechanism 4 through the hinge traction mechanism 2, the crossbeam 02 has the ability to move and adjust in multiple directions, so as to facilitate the assembly and adjustment when assembling the crossbeam 02.

[0046] When the adjusting mechanism 4 and the hinged traction mechanism 2 work together to drive the connecting plate 3 to gradually move away from the mounting base 1, the adjustment mechanism 4 and the linkage mechanism 7 can drive the two fastening side plates 6 to move away from each other, and the distance between the two fastening side plates 6 increases. The U-shaped structure formed by the side seat 5 and the two fastening side plates 6 has an open top, providing sufficient space for the movement adjustment of the crossbeam 02.

[0047] After the two ends of the crossbeam 02 are assembled, the crossbeam 02 is pulled towards the axis of the mounting base 1 by operating the adjustment mechanism 4 in conjunction with the hinge traction mechanism 2. When the crossbeam 02 is tightened to the limit position, the end of the crossbeam 02 is pressed against the side of the mounting base 1. At the same time, during the tightening of the crossbeam 02, the two fastening side plates 6 can be driven to move closer to each other through the linkage of the adjustment mechanism 4 and the linkage mechanism 7. When the crossbeam 02 is tightened to the limit position, the two fastening side plates 6 are correspondingly matched and locked into the recesses on both sides of the crossbeam 02. At the same time, the second fastening hole 61 on the fastening side plate 6 is aligned with the first fastening hole 021 on the crossbeam 02. At this time, the bolt is passed through the corresponding second fastening hole 61 and first fastening hole 021 to fix the end of the crossbeam 02 to the fastening side plate 6. In addition, the end of the crossbeam 02 is fixed to the connecting plate 3 and the two fastening side plates 6 at the same time, with a high degree of firmness.

[0048] Example 2:

[0049] Please see Figure 4 , Figure 6 , Figure 7 and Figure 8 Based on Example 1, this example further explains the articulated traction mechanism 2 and the adjusting mechanism 4, as follows:

[0050] The adjusting mechanism 4 includes a shaft 41, a toothed roller 42, a movable plate 43, a first rack 44, and a driving device. The shaft 41 is vertically and rotatably mounted on the inner bottom wall of the mounting base 1. The toothed roller 42 is fixedly mounted on the shaft 41. The driving device is located inside the mounting base 1 and above the shaft 41, and is used to drive the shaft 41 to rotate and adjust. The inner wall of the mounting base 1 and the area below each hinged traction mechanism 2 are both fixed with slide rails 431 extending horizontally toward the shaft 41. Each slide rail 431 is slidably mounted with a movable plate 43. One end of each hinged traction mechanism 2 located inside the mounting base 1 is connected to the movable plate 43 at the corresponding position. Each movable plate 43 has a first rack 44 fixed on its side surface facing the shaft 41, and each first rack 44 meshes with the toothed roller 42.

[0051] Among them, such as Figure 9 and Figure 10 As shown, the four first racks 44 are distributed on the four sides of the toothed roller 42 and are staggered from top to bottom. The staggered arrangement of the four first racks 44 in the vertical direction can avoid mutual motion interference.

[0052] like Figure 8 As shown, the drive device includes a worm 45 and a worm wheel 46. The worm wheel 46 is fixed to the top of the shaft 41. The worm 45 is rotatably mounted in the mounting base 1 and meshes with the worm wheel 46. In addition, a number of screw holes 451 are provided on the outer wall of the worm 45 around its axis. By inserting tools such as wrenches or pins into the screw holes 451 and applying force to rotate the worm 45, the worm 45 can be easily screwed and adjusted. Furthermore, the screw holes 451 are arranged in a ring array on the worm 45 to ensure that the worm 45 can be easily screwed and adjusted regardless of its rotation angle.

[0053] The articulated traction mechanism 2 includes a traction arm 21, a ball-head hinge 22, and a mounting head 23. The traction arm 21 is mounted through the side wall of the mounting base 1. The mounting head 23 is universally hinged to the end of the traction arm 21 located outside the mounting base 1 through the ball-head hinge 22. The connecting plate 3 is fixed on the mounting head 23. One end of the traction arm 21 located inside the mounting base 1 is universally hinged to the moving plate 43 through the ball-head hinge 22.

[0054] By rotating the worm 45 in the forward direction, the rotating worm 45, under the transmission action of meshing with the worm wheel 46, drives the shaft 41 and the toothed roller 42 to rotate in the forward direction. The toothed roller 42, rotating in the forward direction, meshes with and drives the four first racks 44 to move simultaneously toward the axis of the shaft 41, thereby driving the four moving plates 43 to move toward the axis of the shaft 41. Under the connection action of the traction arm 21 and the mounting head 23, the connecting plate 3 can be driven to move toward the mounting seat 1, thereby tightening the crossbeam 02.

[0055] By reversing the rotation of the worm gear 45, the movement process is opposite to the above direction, thereby driving the four moving plates 43 to move to the side away from the axis of the shaft 41. At this time, the moving plates 43 can push the traction arm 21 to move outward, thus canceling the tension on the crossbeam 02. Combined with the universal joint effect of the ball joint 22, it is convenient for the crossbeam 02 to be adjusted in multiple directions during assembly. In addition, the two ends of the traction arm 21 achieve a double joint effect through the ball joint 22, ensuring that the crossbeam 02 has a higher degree of adjustment freedom.

[0056] In addition, the worm gear 45 and worm wheel 46 are used for unidirectional transmission, which has a self-locking effect and prevents the toothed roller 42 from rotating randomly when not being adjusted, thereby ensuring the stability of the crossbeam 02 when it is tightened.

[0057] Example 3:

[0058] Please see Figure 7 The difference between this embodiment and Embodiment 2 is that:

[0059] Positioning seats 11 are fixed on the outer side of the mounting base 1 at positions corresponding to the positions of each traction arm 21. Each positioning seat 11 is provided with a hemispherical groove 12 with the opening facing outward horizontally. The traction arm 21 passes through the hemispherical groove 12. The mounting head 23 is a hemispherical structure and its shape matches the hemispherical groove 12. When the crossbeam 02 is pulled to the limit position, the mounting head 23 is fitted into the hemispherical groove 12, and the outer wall of the mounting head 23 is in close contact with the inner wall of the hemispherical groove 12. At the same time, the connecting plate 3 is in close contact with the side surface of the positioning seat 11 to achieve the tensioning and positioning of the end of the crossbeam 02, thereby restricting the free movement of the connecting plate 3 and ensuring that the crossbeam 02 can continuously maintain the state of the second fastening hole 61 and the first fastening hole 021 aligned one by one, so that the end of the crossbeam 02 can be fastened and locked to the fastening side plate 6 with bolts.

[0060] In addition, the side wall of the mounting base 1 and the positioning base 11 are provided with a horizontally extending movable hole 13. The movable hole 13 is coaxially arranged with the hemispherical groove 12. One end of the movable hole 13 is connected to the hemispherical groove 12, and the other end is connected to the interior of the mounting base 1. The traction arm 21 passes through the movable hole 13, and the diameters of the traction arm 21 and the ball-head hinge 22 are both smaller than the diameter of the movable hole 13. On the one hand, the movable hole 13 provides space for the traction arm 21. On the other hand, when the crossbeam 02 is tightened to the limit state, it provides storage space for the ball-head hinge 22 connected to the mounting head 23.

[0061] Example 4:

[0062] Please see Figure 4 , Figure 5 , Figure 7 , Figure 11 and Figure 12 Based on the foregoing embodiments, this embodiment is used to further explain and illustrate the linkage mechanism 7, as follows:

[0063] Two through slots 51 are symmetrically provided on the side seat 5. The lower surface of the side seat 5 is provided with a groove 52. The side wall of the mounting base 1 is provided with a sliding groove 14 that communicates with the groove 52 at the corresponding position of each side seat 5. The linkage mechanism 7 includes a bidirectional threaded rod 71, a nut seat 72, an adjusting gear 73 and a second rack 74. A sliding rod 721 is fixed on the side seat 5. The sliding rod 721 extends through into the two through slots 51. A nut seat 72 is provided in each of the two through slots 51 on the side seat 5. The nut seat 72 is slidably fitted on the sliding rod 721. At the same time, the nut seat 72 slides against the inner wall of the through slot 51. The fastening side plate 6 is fixed on the corresponding nut seat 72 to realize the limited installation of the fastening side plate 6.

[0064] A bidirectional threaded rod 71 is rotatably installed in the groove 52. The two sides of the bidirectional threaded rod 71 extend into the two through slots 51 respectively. Two nut seats 72 are threadedly matched and fitted on both sides of the bidirectional threaded rod 71. Each moving plate 43 has a second rack 74 fixed on the side away from the axis of the mounting base 1. The second rack 74 slides through the corresponding slide groove 14 and extends into the corresponding groove 52. An adjusting gear 73 is set in the groove 52 and fixedly fitted on the bidirectional threaded rod 71. The adjusting gear 73 meshes with the second rack 74.

[0065] When adjusting the first rack 44 to rotate forward and tighten the crossbeam 02, the moving plate 43 drives the second rack 74 to move synchronously towards the axis of the mounting base 1. The moving second rack 74 engages with the adjusting gear 73 and drives the bidirectional threaded rod 71 to rotate. The rotating bidirectional threaded rod 71 drives the two nut seats 72 to move closer to each other, so that when the crossbeam 02 is tightened to its limit, the two fastening side plates 6 can simultaneously fit into the recesses on both sides of the crossbeam 02. When adjusting the first rack 44 to rotate in the opposite direction and cancel the tightening, the moving plate 43 pushes the second rack 74 to move outward. The second rack 74 engages with the adjusting gear 73 and drives the bidirectional threaded rod 71 to rotate in the opposite direction, thereby driving the two nut seats 72 to move away from each other, increasing the distance between the two fastening side plates 6, and facilitating the adjustment of the crossbeam 02.

[0066] The linkage mechanism 7 and the adjustment mechanism 4 are used to drive the adjustment of the distance between the two fastening side plates 6. No additional operation is required to adjust the distance between the two fastening side plates 6. In addition, it ensures that the timing of the adjustment of the distance between the fastening side plates 6 is synchronized with the state of the crossbeam 02. That is, when the crossbeam 02 is tightened, the two fastening side plates 6 move closer to each other, and when the crossbeam 02 is adjusted, the two fastening side plates 6 move further away from each other.

[0067] Example 5:

[0068] Please see Figure 13 The difference between this embodiment and embodiment 4 is that:

[0069] The inner sides of two adjacent movable plates 43 are equipped with insertion rods 432, and the inner sides of the other two movable plates 43 are provided with insertion holes 433. The insertion rods 432 distributed on opposite sides are aligned with the insertion holes 433. When the crossbeam 02 is tightened to its limit position, the two insertion rods 432 can be aligned and inserted into the corresponding insertion holes 433. When the crossbeam 02 is completely fixed and assembled on the side of the assembly base 1, the insertion rods 432 are aligned and inserted into the insertion holes 433 to enhance the structural strength between the two symmetrical movable plates 43 and improve the internal load-bearing stability of the assembly base 1.

[0070] 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 present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A prefabricated steel structure building connection device, comprising an assembly base (1), wherein the assembly base (1) is fixed to the top of a column (01) and is a hollow cylindrical shape with the opening facing upward, characterized in that: The four sides of the assembly base (1) are respectively provided with hinged traction mechanisms (2), and each hinged traction mechanism (2) is provided with a connecting plate (3) at one end outside the assembly base (1). The connecting plate (3) is used to fix the end of the crossbeam (02). The assembly base (1) is provided with an adjustment mechanism (4). One end of each of the hinged traction mechanisms (2) located in the assembly base (1) is connected to the adjustment mechanism (4) in a transmission manner. Each of the connecting plates (3) is hinged to the adjustment mechanism (4) through the corresponding hinged traction mechanism (2). The adjustment mechanism (4) includes a shaft (41), a toothed roller (42), a moving plate (43), a first rack (44), and a drive device; The shaft (41) is vertically rotatably mounted on the inner bottom wall of the mounting base (1), and the toothed roller (42) is fixedly mounted on the shaft (41); The driving device is located inside the mounting base (1) and above the shaft (41), and is used to drive the shaft (41) to rotate and adjust. The inner wall of the mounting base (1) and below each of the hinged traction mechanisms (2) are fixed with slide rails (431) extending horizontally toward the shaft (41). Each of the slide rails (431) is equipped with a movable plate (43) that is limited to sliding. One end of each of the articulated traction mechanisms (2) located in the assembly base (1) is connected to the movable plate (43) at the corresponding position. The first rack (44) is fixed on the side surface of each of the moving plates (43) facing the shaft (41). Each of the first racks (44) meshes with the toothed roller (42); The drive unit includes a worm (45) and a worm wheel (46); The worm gear (46) is fixed to the top of the shaft (41), and the worm (45) is rotatably installed in the mounting base (1) and meshes with the worm gear (46); The articulated traction mechanism (2) includes a traction arm (21), a ball-head hinge (22), and a mounting head (23). The traction arm (21) is installed through the side wall of the mounting base (1), and one end of the traction arm (21) located inside the mounting base (1) is universally hinged to the moving plate (43) through the ball joint (22). The mounting head (23) is universally hinged to the end of the traction arm (21) located outside the mounting base (1) via the ball joint (22); The connecting plate (3) is fixed to the mounting head (23); A positioning seat (11) is fixed on the outer side of the mounting base (1) at the position corresponding to each of the traction arms (21). Each positioning seat (11) is provided with a hemispherical groove (12) with the opening facing outward horizontally. The traction arm (21) passes through the hemispherical groove (12) accordingly. The mounting head (23) has a hemispherical structure and its shape matches the hemispherical groove (12); Side seats (5) are fixed on the outer surface of the mounting base (1) and below each connecting plate (3), and a pair of fastening side plates (6) are slidably installed on each side seat (5). Each of the side seats (5) is provided with a linkage mechanism (7) for driving the two fastening side plates (6) to move closer to each other or further away from each other. The linkage mechanism (7) is in transmission cooperation with the hinge traction mechanism (2). The fastening side plate (6) is C-shaped and matches the structure of the recessed part of the crossbeam (02). Each of the fastening side plates (6) is provided with several second fastening holes (61). Two through slots (51) are symmetrically provided on the side seat (5), and a groove (52) is provided on the lower surface of the side seat (5). A sliding groove (14) that communicates with the groove (52) is provided on the side wall of the mounting base (1) at the position corresponding to each side seat (5). The linkage mechanism (7) includes a bidirectional threaded rod (71), a nut seat (72), an adjusting gear (73), and a second rack (74); A slide rod (721) is fixed on the side seat (5), and the slide rod (721) extends through the two through slots (51); Nut seats (72) are provided in both through slots (51) on the side seat (5). The nut seats (72) are slidably fitted on the slide rod (721), and the nut seats (72) are slidably fitted to the inner wall of the through slot (51). The bidirectional threaded rod (71) is rotatably installed in the groove (52), and the two sides of the bidirectional threaded rod (71) extend into the two through grooves (51) respectively. The two nut seats (72) are respectively threaded and fitted on both sides of the bidirectional threaded rod (71); Each of the movable plates (43) is fixed with a second rack (74) on the side opposite to the axis of the mounting base (1). The second rack (74) slides through the corresponding groove (14) and extends into the corresponding groove (52); The adjusting gear (73) is located in the groove (52) and is fixedly fitted on the bidirectional threaded rod (71), and the adjusting gear (73) meshes with the second rack (74); The fastening side plates (6) are respectively fixed on the corresponding nut seats (72).

2. The prefabricated steel structure building connection device according to claim 1, characterized in that: The four first toothed racks (44) are distributed on the four sides of the toothed roller (42) and are arranged in a staggered manner from top to bottom.

3. The prefabricated steel structure building connection device according to claim 1, characterized in that: The side wall of the mounting base (1) and the positioning base (11) are provided with a horizontally extending movable hole (13), and the movable hole (13) and the hemispherical groove (12) are arranged coaxially. One end of the movable hole (13) is connected to the hemispherical groove (12), and the other end is connected to the interior of the mounting base (1); The traction arm (21) passes through the movable hole (13), and the diameters of the traction arm (21) and the ball-head hinge (22) are both smaller than the diameter of the movable hole (13).

4. The prefabricated steel structure building connection device according to claim 1, characterized in that: The inner sides of two adjacent movable plates (43) are equipped with plug rods (432), and the inner sides of the other two movable plates (43) are provided with plug holes (433). The insertion rods (432) distributed on opposite sides are aligned with the insertion holes (433); When the crossbeam (02) is pulled to its limit position, the two plug rods (432) can be aligned and inserted into the corresponding plug holes (433).

5. A prefabricated steel structure building connection device according to claim 1, characterized in that: The worm (45) has several screw holes (451) around its axis on its outer wall.

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