Assembly type beam column tapping inner sleeve high-strength bolt connection joint
By using prefabricated beam-column tapped inner sleeve high-strength bolt connection nodes, the combination of connecting sleeve and fastening bolt solves the problems of difficult welding quality control and low efficiency of traditional bolt and nut connection, achieving efficient and precise beam-column connection, and ensuring construction quality and safety.
Patent Information
- Application Number
- CN202522013268.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-09-19
AI Technical Summary
In existing prefabricated buildings, the connection methods in the node area have problems such as difficulty in controlling welding quality, residual stress and strain affecting load-bearing capacity, and traditional bolt and nut connections being inefficient and complicated to operate at heights.
The prefabricated beam-column tapping inner sleeve high-strength bolt connection node is adopted. The mechanical connection between the beam and column is achieved by the combination of the connecting sleeve and the fastening bolt. The alignment of the hole is ensured by the use of the limiting steel ring, and the components are prefabricated in the factory to ensure accuracy and avoid thermal processes.
It improves construction efficiency, simplifies high-altitude operations, ensures precise alignment and connection quality between components, avoids residual stress and thermal deformation, and reduces reliance on personnel skills.
Smart Images
Figure CN223482018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated steel structure technology, specifically a prefabricated beam-column tapped inner sleeve high-strength bolt connection node. Background Technology
[0002] Prefabricated buildings, as an advanced construction production method, have advantages such as high construction efficiency, uniform and stable quality, and environmental friendliness. Its core is to pre-produce some or all of the building components in a factory, then transport them to the construction site, and assemble them like building blocks through reliable connection methods.
[0003] Under current technology, the connection methods for node areas are often traditional bolt and nut connections or direct welding. However, welding presents several unresolved problems: welded connections require highly skilled workers; on-site welding is susceptible to environmental influences, making quality control difficult; residual stress and strain after welding reduce the load-bearing capacity of components and affect installation accuracy; and the weld root is prone to brittle fracture under seismic loads. Furthermore, it is difficult to ensure alignment between the two welded objects, impacting construction efficiency and resulting in low precision. Traditional bolt and nut connections present the following problems: if the node area is located at a high position, workers need to operate from a higher position. Traditional bolt and nut connections require passing the bolt through a hole, placing a nut on the back and connecting it to the bolt, controlling the nut to prevent rotation, and simultaneously tightening the bolt until it is fully tightened. Since this involves simultaneous work on both sides, it becomes extremely cumbersome at heights, severely reducing construction efficiency. Utility Model Content
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a prefabricated beam-column tapping inner sleeve high-strength bolt connection node, including a longitudinal steel pipe column, a transverse steel beam, a connecting sleeve, and fastening bolts;
[0005] The outer sides of both ends of the connecting sleeve have the same shape as the inner sides of both ends of the longitudinal steel pipe column and they fit together.
[0006] The longitudinal steel pipe column has multiple holes at both ends along its circumference, and the connecting sleeve also has holes that cooperate with it. When the connecting sleeve is inserted into the longitudinal steel pipe column, the holes on the connecting sleeve are aligned with the holes on the longitudinal steel pipe column.
[0007] A limiting steel ring is fixedly installed at the axial middle position of the connecting sleeve;
[0008] The hole on the connecting sleeve is a threaded hole, and the threaded hole on the connecting sleeve is matched with the fastening bolt.
[0009] As a preferred technical solution of this utility model, the transverse steel beam includes an H-shaped steel beam and an end plate. The end plate is fixedly connected to one end of the H-shaped steel beam near the longitudinal steel pipe column, and the end plate has holes corresponding to the holes on the longitudinal steel pipe column.
[0010] As a preferred technical solution of this utility model, the size and shape of the outer contour of the limiting steel ring are consistent with the outer contour of the longitudinal steel pipe column.
[0011] As a preferred embodiment of this utility model, the length of the threaded portion of the fastening bolt is slightly greater than the sum of the thickness of the connecting sleeve, the thickness of the longitudinal steel pipe column, and the thickness of the end plate.
[0012] As a preferred technical solution of this utility model, the fastening bolts are installed according to the position of the transverse steel beam required for actual construction; on the side where the transverse steel beam needs to be installed, the fastening bolts are first inserted into the holes on the end plate, then into the holes on the longitudinal steel pipe column, and finally screwed into the holes on the connecting sleeve; on the side where the transverse steel beam does not need to be installed, the fastening bolts are first inserted into the holes on the longitudinal steel pipe column, and then screwed into the holes on the connecting sleeve.
[0013] As a preferred embodiment of this utility model, the four edges of the connecting sleeve are chamfered rounded.
[0014] The beneficial effects of this utility model are as follows: First, this utility model achieves the splicing between beams and columns by using fastening bolts and connecting sleeves. The connecting sleeves replace nuts, allowing fastening bolts to be screwed in from the outside of the longitudinal steel pipe column, which simplifies the assembly process between beams and columns, greatly improves construction efficiency, and facilitates high-altitude operations.
[0015] Second, the limiting steel ring around the connecting sleeve of this utility model can help to complete the correspondence between the holes of the connecting sleeve and the longitudinal steel pipe column. During assembly, the holes can be aligned simply by contacting one end of the limiting steel ring with the longitudinal steel pipe column. Since the holes of the longitudinal steel pipe column, end plate and connecting sleeve are all prefabricated in the factory, the positional accuracy of the holes is effectively guaranteed, thereby ensuring the alignment of the holes between the various components during installation.
[0016] Third, this utility model is a mechanical connection, which does not involve a thermal process. Therefore, it will not generate residual stress or thermal deformation, nor will it change any of the material properties. Compared with welding technology, the tightening operation of bolted connections is easier to train and standardize. It can be quantitatively controlled using tools such as torque wrenches, and has a relatively low dependence on personnel skills. Moreover, this utility model is prefabricated in the factory and transported to the construction site for assembly. The various parts can be aligned and assembled, and there are no problems such as misalignment, which ensures the positional accuracy between the various parts. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram of the disassembled structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the structure of this utility model after assembly.
[0020] Figure 3 This is a front view of the present invention.
[0021] Figure 4 This is a top view of the present invention.
[0022] Figure 5 This is a structural schematic diagram of the connecting sleeve of this utility model.
[0023] Figure 6 This is a schematic diagram of the structure of this utility model after one-sided assembly.
[0024] Figure 7 This is a schematic diagram of the structure after both sides of the present invention are assembled.
[0025] Figure 8 This is a schematic diagram of the structure of this utility model after the three sides are assembled.
[0026] In the diagram: 1. Longitudinal steel pipe column; 2. Transverse steel beam; 21. H-beam; 22. End plate; 3. Connecting sleeve; 31. Limiting steel ring; 4. Fastening bolt. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. The embodiments described below are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in this field or in accordance with the product manual.
[0028] See Figure 1-Figure 5 A prefabricated beam-column tapped inner sleeve high-strength bolt connection node includes a longitudinal steel pipe column 1, a transverse steel beam 2, a connecting sleeve 3, and fastening bolts 4; the outer sides of both ends of the connecting sleeve 3 have the same shape as the inner sides of both ends of the longitudinal steel pipe column 1 and they fit together; multiple holes are opened along the circumference of both ends of the longitudinal steel pipe column 1, and the connecting sleeve 3 also has holes that fit together with it. When the connecting sleeve 3 is inserted into the longitudinal steel pipe column 1, the holes on the connecting sleeve 3 are aligned with the holes on the longitudinal steel pipe column 1.
[0029] See Figure 1-Figure 4The transverse steel beam 2 includes an H-shaped steel beam 21 and an end plate 22. The end plate 22 is fixedly connected to one end of the H-shaped steel beam 21 near the longitudinal steel pipe column 1. The end plate 22 has holes corresponding to the holes on the longitudinal steel pipe column 1. A limiting steel ring 31 is fixedly installed at the axial middle position of the connecting sleeve 3. The size and shape of the outer contour of the limiting steel ring 31 are consistent with the outer contour of the longitudinal steel pipe column 1. The length of the threaded part of the fastening bolt 4 is slightly greater than the sum of the thickness of the connecting sleeve 3, the thickness of the longitudinal steel pipe column 1, and the thickness of the end plate 22.
[0030] The limiting steel ring 31 around the connecting sleeve 3 of this utility model can help to complete the correspondence between the holes of the connecting sleeve 3 and the longitudinal steel pipe column 1. During assembly, the holes can be aligned simply by contacting one end of the limiting steel ring 31 with the longitudinal steel pipe column 1. Since the holes of the longitudinal steel pipe column 1, the end plate 22 and the connecting sleeve 3 are all prefabricated in the factory, the positional accuracy of the holes is effectively guaranteed, thereby ensuring the alignment of the holes between the various components during installation.
[0031] See Figure 2 , Figure 5-Figure 8 The hole on the connecting sleeve 3 is a threaded hole, which mates with the fastening bolt 4. The fastening bolt 4 is installed according to the actual construction needs of the transverse steel beam 2. On the side where the transverse steel beam 2 needs to be installed, the fastening bolt 4 is first inserted into the hole on the end plate 22, then into the hole on the longitudinal steel pipe column 1, and finally screwed into the hole on the connecting sleeve 3. On the side where the transverse steel beam 2 does not need to be installed, the fastening bolt 4 is first inserted into the hole on the longitudinal steel pipe column 1, and then screwed into the hole on the connecting sleeve 3. The four edges of the connecting sleeve 3 are chamfered.
[0032] It should be noted that the connecting sleeve 3 has rounded corners around its perimeter instead of sharp edges, and its surface is smooth, which avoids the problem of having to spend effort to find the best fit point for connection during the assembly process.
[0033] This invention is a mechanical connection, which does not involve a thermal process. Therefore, it will not generate residual stress or thermal deformation, nor will it change any properties of the material. Compared with welding technology, the tightening operation of bolted connections is easier to train and standardize. It can be quantitatively controlled using tools such as torque wrenches, and has a relatively low dependence on personnel skills. Moreover, this invention is prefabricated in the factory and transported to the construction site for assembly. The various components can be aligned and assembled, eliminating problems such as misalignment and ensuring the positional accuracy between the various components.
[0034] The construction process is as follows: Insert the connecting sleeve 3 into the lower longitudinal steel pipe column 1, and limit it with the limiting steel ring 31. Positioning is completed when the limiting steel ring 31 contacts the lower longitudinal steel pipe column 1. At this time, the limiting steel ring 31 is aligned with the hole on the lower longitudinal steel pipe column 1. Then, put another longitudinal steel pipe column 1 on top of the connecting sleeve 3 for temporary fixation. Then, select the side of the transverse steel beam 2 to be installed according to the construction needs. When constructing on the side where the transverse steel beam 2 needs to be installed... Hoist the transverse steel beam 2 to the corresponding position, align the holes on its end plate 22 with the holes on the longitudinal steel pipe column 1, and then screw the fastening bolts 4 into the holes. First, insert the fastening bolts 4 into the holes on the end plate 22, then into the holes on the longitudinal steel pipe column 1, and finally screw them into the holes on the connecting sleeve 3. For the side of the transverse steel beam 2 that does not need to be installed, directly insert the fastening bolts 4 from the holes on the longitudinal steel pipe column 1, and then screw them into the holes on the connecting sleeve 3 until all the fastening bolts 4 are fully tightened, thus completing the construction.
[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered by the protection scope of the present invention.
Claims
1. A prefabricated beam-column tapping inner sleeve high-strength bolt connection node, characterized in that, Includes longitudinal steel pipe columns (1), transverse steel beams (2), connecting sleeves (3), and fastening bolts (4); The outer sides of both ends of the connecting sleeve (3) have the same shape as the inner sides of both ends of the longitudinal steel pipe column (1) and they fit together. The longitudinal steel pipe column (1) has multiple holes at both ends along its circumference, and the connecting sleeve (3) also has holes that cooperate with it. When the connecting sleeve (3) is inserted into the longitudinal steel pipe column (1), the holes on the connecting sleeve (3) are aligned with the holes on the longitudinal steel pipe column (1). A limiting steel ring (31) is fixedly installed at the axial middle position of the connecting sleeve (3); The hole on the connecting sleeve (3) is a threaded hole, and the threaded hole on the connecting sleeve (3) cooperates with the fastening bolt (4).
2. The prefabricated beam-column tapping inner sleeve high-strength bolt connection node according to claim 1, characterized in that, The transverse steel beam (2) includes an H-beam (21) and an end plate (22). The end plate (22) is fixedly connected to one end of the H-beam (21) near the longitudinal steel column (1). The end plate (22) has holes corresponding to the holes on the longitudinal steel column (1).
3. The prefabricated beam-column tapping inner sleeve high-strength bolt connection node according to claim 2, characterized in that, The size and shape of the outer contour of the limiting steel ring (31) are consistent with the outer contour of the longitudinal steel pipe column (1).
4. The prefabricated beam-column tapping inner sleeve high-strength bolt connection node according to claim 2, characterized in that, The length of the threaded portion of the fastening bolt (4) is slightly greater than the sum of the thickness of the connecting sleeve (3), the thickness of the longitudinal steel pipe column (1), and the thickness of the end plate (22).
5. The prefabricated beam-column tapping inner sleeve high-strength bolt connection node according to claim 3, characterized in that, The fastening bolts (4) are installed according to the position of the transverse steel beam (2) required for actual construction. On the side where the transverse steel beam (2) needs to be installed, the fastening bolts (4) are first inserted into the hole on the end plate (22), then into the hole on the longitudinal steel pipe column (1), and finally screwed into the hole on the connecting sleeve (3). On the side where the transverse steel beam (2) does not need to be installed, the fastening bolts (4) are first inserted into the hole on the longitudinal steel pipe column (1), and then screwed into the hole on the connecting sleeve (3).
6. The prefabricated beam-column tapping inner sleeve high-strength bolt connection node according to claim 1, characterized in that, The four edges of the connecting sleeve (3) are chamfered arcs.