Assembly-oriented inner sleeve connecting joint

Abstract

The utility model discloses an assembly-oriented inner sleeve connecting node, which belongs to the field of assembly-type building structures and comprises a cross-shaped connecting piece, a column body and a floor beam, the cross-shaped connecting piece comprises a base bearing plate, cross-shaped stiffening ribs and expansion wings, the cross-shaped stiffening ribs are symmetrically arranged on the upper side and the lower side of the base bearing plate, and the cross-shaped stiffening ribs are symmetrically arranged on the upper side and the lower side of the base bearing plate. Bolt notches are formed in the side faces of the cross-shaped stiffening ribs, the expansion wings are arranged on the outer side of the cross-shaped connecting piece and connected with the base bearing plate, bolt holes are formed in the expansion wings, the bolt holes correspond to the bolt notches in position, and embedded nuts are arranged on the inner sides of the bolt holes. The column bodies are arranged on the upper side and the lower side of the cross-shaped connecting piece in a sleeving mode, connecting screw holes are formed in the middles of the column bodies, beam connecting holes are formed in the two sides of the connecting screw holes, and nuts are welded in the beam connecting holes. The floor beam is arranged on the outer side of the column body. Welding is not needed on site, the reserved error space is reduced, the connecting face is smooth, installation operation is convenient, and wall construction is convenient.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated building structures, and particularly relates to an inner sleeve connection node for assembly. Background Art

[0002] In recent years, with the continuous spread of the modular concept in prefabricated buildings, the functional integration of building modules has been continuously improved. Building modules with more complete functions also put forward new requirements for the function and form of connections. At present, inner sleeves and their various variants are widely used in the scenario of rectangular steel pipe column-column connections in modular buildings due to less on-site work, a flatter finished surface, and their positioning function for connected members.

[0003] However, different from the externally applied connecting plates, the inner sleeve connection is always in an over-constrained state during the assembly process. To ensure that the connected members can be smoothly sleeved into the inner sleeve, a common practice is to additionally reduce the size of the inner sleeve to reserve an error space for the connected members. However, during the use of the node, the reserved error space will weaken the friction between the inner sleeve and the connected members, and even cause large deformation of the column when tightening the bolts.

[0004] On the other hand, the fastening bolts of the inner sleeve and the column are usually located in the beam-column connection area. If no additional connection protrusions are provided for the beam, it may cause interference or overlap between the column-column connection and the beam-column bolts. And setting additional connection protrusions for the beam will increase the transportation complexity of the column. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an inner sleeve connection node for assembly to solve the above problems, which can automatically position the connected members, the connection bolts of each structure do not interfere with each other, the connection surface is flat, convenient for installation operation, and reduces the reserved error space.

[0006] Technical Solution: The utility model provides an inner sleeve connection node for assembly, including: a cross-shaped connecting member, a column body, and a floor beam. The cross-shaped connecting member includes: a base bearing plate, cross stiffeners, and extended wings. The cross stiffeners are symmetrically arranged on the upper and lower sides of the base bearing plate. Bolt cutouts are arranged on the sides of the cross stiffeners. The extended wings are arranged on the four outer sides of the cross-shaped connecting member and are connected to the base bearing plate. Bolt holes are provided on the extended wings, and the positions of the bolt holes correspond to those of the bolt cutouts. Embedded nuts are arranged inside the bolt holes. The column body is sleeved on the upper and lower sides of the cross-shaped connecting member. Connecting screw holes are provided in the middle of the column body, and the positions of the connecting screw holes correspond to those of the bolt holes. Beam connection holes are provided on both sides of the connecting screw holes, and nuts are welded inside the beam connection holes. The floor beam is arranged outside the column body and is connected to the column body by bolts inserted into the beam connection holes.

[0007] Furthermore, for the above-mentioned inner sleeve connection node for assembly, the width dimension of the bolt cut is the same as the size of the embedded nut, and the depth of the bolt cut is greater than the length of the inserted bolt. The embedded nut is connected to the extended wing or the bolt cut by welding.

[0008] Furthermore, for the above-mentioned inner sleeve connection node for assembly, the cross stiffener and the base bearing plate are connected by welding.

[0009] Furthermore, for the above-mentioned inner sleeve connection node for assembly, the fillet of the bolt cut is chamfered.

[0010] Furthermore, for the above-mentioned inner sleeve connection node for assembly, the width of the extended wing is 1 / 3 of the inner diameter of the column body, which can be appropriately adjusted. The maximum width shall not interfere with the bolts for the connection between the beam and the column, nor affect the welding of the embedded nut. The minimum width depends on the diameter of the bolt hole. The outer side of the upper end of the extended wing is chamfered.

[0011] Furthermore, for the above-mentioned inner sleeve connection node for assembly, the size of the base bearing plate is larger than the size of the column body.

[0012] Furthermore, for the above-mentioned inner sleeve connection node for assembly, the floor beam adopts a channel steel with end plates. The end plates are provided with bolt holes. There is a gap between adjacent floor beams on the same side to facilitate the installation of bolts. Stiffeners are arranged between the corner floor beams to ensure the connection strength at the corners.

[0013] From the above technical solutions, it can be seen that the present utility model has the following beneficial effects: For the inner sleeve connection node for assembly of the present utility model, no on-site welding is required. While ensuring the smooth connection of the sleeve structure, the reserved error space is reduced, making the friction between the contact surfaces of the connecting piece and the column more reliable. At the same time, the connecting piece also provides a limiting function for the beam and the column, facilitating assembly. In addition, the completed surface at the top of the beam is flat, facilitating the subsequent floor paving process, and there is no additional protrusion at the beam-column connection part, facilitating wall construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an inner sleeve connection node for assembly of the present utility model;

[0015] Figure 2 It is a schematic diagram of a cross-shaped connecting piece of the present utility model;

[0016] Figure 3 It is a schematic diagram of a column body of the present utility model.

[0017] In the figure: cross-shaped connecting piece 1, column body 2, floor beam 3, base bearing plate 11, cross stiffening rib 12, extended wing 13, bolt notch 121, bolt hole 131, embedded nut 132, connecting screw hole 21, beam connecting hole 22, stiffening rib 31. Specific implementation manner

[0018] Example 1

[0019] As Figures 1-3 shown, an assembly-oriented inner sleeve connection node includes: a cross-shaped connecting piece 1, a column body 2, and a floor beam 3. The cross-shaped connecting piece 1 includes: a base bearing plate 11, a cross stiffening rib 12, and an extended wing 13. The cross stiffening ribs 12 are symmetrically arranged on both the upper and lower sides of the base bearing plate 11. Bolt notches 121 are provided on the sides of the cross stiffening ribs 12. The extended wings 13 are arranged on the four outer sides of the cross-shaped connecting piece 1 and are connected to the base bearing plate 11. Bolt holes 131 are provided on the extended wings 13, and the positions of the bolt holes correspond to those of the bolt notches 121. Embedded nuts 132 are arranged inside the bolt holes 131; the column body 2 is sleeved on both the upper and lower sides of the cross-shaped connecting piece 1. Connecting screw holes 21 are provided in the middle of the column body 2, and the positions of the connecting screw holes 21 correspond to those of the bolt holes 131. Beam connecting holes 22 are provided on both sides of the connecting screw holes 21, and nuts are welded inside the beam connecting holes 22; the floor beam 3 is arranged outside the column body 2 and is connected to the column body 2 by inserting bolts into the beam connecting holes 22; the cross stiffening ribs 12 provide support for the column body 2 to prevent local buckling of the column body 2 and improve the bearing capacity of the node. The extended wings 13 provide the contact surface between the cross-shaped connecting piece 1 and the column body 2 for fastening bolts.

[0020] As Figure 2 shown, for an assembly-oriented inner sleeve connection node, the width dimension of the bolt notch 121 is the same as the dimension of the embedded nut 132, the depth of the bolt notch 121 is greater than the length of the inserted bolt, the embedded nut 132 is connected to the extended wing 13 or the bolt notch 121 by welding, and chamfering is performed on the fillet of the bolt notch 121 to reduce stress concentration.

[0021] In this embodiment, the cross stiffening rib 12 is connected to the base bearing plate 11 by welding.

[0022] Example 2

[0023] On the basis of Example 1, in this embodiment, as Figure 2An assembly-oriented inner sleeve connection node as shown. The width of the extended wing 13 is 1 / 3 of the inner diameter of the column body 2, which can be adjusted appropriately. The maximum width shall not interfere with the bolts connecting the beam and the column, nor affect the welding of the embedded nut. The minimum width depends on the diameter of the bolt hole. The outer side of the upper end of the extended wing 13 is chamfered, which can realize the automatic positioning of the column body 2 during assembly. And when the inner diameter of the column body 2 is equal to or slightly smaller than the design value, the cross-section of the column body 2 can be expanded slightly by swinging repeatedly, so that the column body 2 can be successfully positioned and assembled, thereby reducing the reserved error space, and further improving the connection strength and reliability.

[0024] In this embodiment, the size of the base bearing plate 11 is larger than that of the column body 2, providing a limiting function for the column body 2 and the floor beam 3 during the assembly process.

[0025] As Figure 1 An assembly-oriented inner sleeve connection node as shown. The floor beam 3 adopts a channel steel with end plates. The end plates are provided with bolt holes. There is a gap between adjacent floor beams 3 on the same side, which is convenient for screwing the bolts during installation. Stiffeners 31 are arranged between the corner floor beams 3. When using an integrated beam floor slab, stiffeners 31 need to be provided for the floor beam 3 at the corner of the slab to ensure the connection strength at the corner.

[0026] It should be noted that the above is only the technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the scope of the technical solution of the present utility model, and all of them should be covered by the scope of the claims of the present utility model.

Claims

1. An assembly-oriented inner sleeve connection node, characterized in that: Comprising: A cross-shaped connecting member (1), the cross-shaped connecting member (1) comprising: a base bearing plate (11), cross stiffeners (12), and extended wings (13). The cross stiffeners (12) are symmetrically arranged on the upper and lower sides of the base bearing plate (11). Bolt cutouts (121) are provided on the sides of the cross stiffeners (12). The extended wings (13) are arranged on the four outer sides of the cross-shaped connecting member (1) and are connected to the base bearing plate (11). Bolt holes (131) are provided on the extended wings (13). The bolt holes correspond to the positions of the bolt cutouts (121). Embedded nuts (132) are provided inside the bolt holes (131). A column body (2), the column body (2) being sleeved on the upper and lower sides of the cross-shaped connecting member (1). A connecting screw hole (21) is provided in the middle of the column body (2). The position of the connecting screw hole (21) corresponds to that of the bolt hole (131). Beam connection holes (22) are provided on both sides of the connecting screw hole (21). Nuts are welded inside the beam connection holes (22). A floor beam (3), the floor beam (3) being arranged outside the column body (2) and connected to the column body (2) by bolts inserted into the beam connection holes (22).

2. The assembly-oriented inner sleeve connection node according to claim 1, characterized in that: The width dimension of the bolt cutout (121) is the same as the dimension of the embedded nut (132). The depth of the bolt cutout (121) is greater than the length of the inserted bolt. The embedded nut (132) is connected to the extended wing (13) or the bolt cutout (121) by welding.

3. The inner sleeve connection node for assembly according to claim 1, characterized in that: The cross stiffeners (12) are connected to the base bearing plate (11) by welding.

4. The inner sleeve connection node for assembly according to claim 1, characterized in that: Chamfering treatment is performed on the inner corners of the bolt cutouts (121).

5. The inner sleeve connection node for assembly according to claim 1, characterized in that: The width of the extended wing (13) is 1 / 3 of the inner diameter of the column body (2). Chamfering treatment is performed on the outer side of the upper end of the extended wing (13).

6. The inner sleeve connection node for assembly according to claim 1, characterized in that: The dimension of the base bearing plate (11) is larger than that of the column body (2).

7. The inner sleeve connection node for assembly according to claim 1, characterized in that: The floor beam (3) is a channel steel with end plates. The end plates are provided with bolt holes. A gap is left between adjacent floor beams (3) on the same side. Stiffeners (31) are provided between the floor beams (3) at the corners.

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