A steel construction connector

Abstract

The utility model relates to a kind of steel connecting pieces for building, relate to building construction technology field, to solve the problem of insufficient rigidity and external force resistance of existing steel pipe connecting piece connection, and poor inner diameter tolerance adaptability.This connecting piece includes segmented inner support core and fastening hoop assembly;The middle part of segmented inner support core is equipped with symmetrical limiting lug and through hole, and the both ends are extended to form stepped secondary insertion end head;Fastening hoop assembly includes two wave hoops, and is connected by supporting bolt through the through hole of core.The utility model utilizes limiting lug and supporting bolt to jointly constitute a level of support step surface, realize four-point balanced limiting of the port of the pipe to be connected, prevent eccentric load;With stepped secondary insertion end head to adapt pipe diameter tolerance, and the elastic clamping and mechanical interlocking of wave hoop, realize the rigid connection with high shear resistance.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, specifically to a rigid connector for construction. Background Technology

[0002] In construction scaffolding erection and steel structure assembly, the splicing of steel pipes is a frequent process, and the stability of the splicing directly affects construction safety. Existing splicing couplers mostly use a single-slot sleeve, relying on bolts for tightening. This type of connector has the following problems: (1) The connection has poor rigidity and is prone to loosening under stress; (2) It cannot adapt to steel pipes with different inner diameter tolerances, resulting in difficulty in insertion or loose fit; (3) It lacks an effective internal through-limiting structure and has insufficient shear and pull-out resistance.

[0003] Therefore, there is a need for a connection device that can provide both rigidity and shear pull resistance for pipe connections, while also being able to accommodate pipe diameter errors. Utility Model Content

[0004] The technical problem this invention aims to solve is to address the insufficient rigidity and resistance to external forces, as well as the poor adaptability of inner diameter tolerances in existing steel pipe connectors, by providing a rigid connector for construction.

[0005] To solve the above-mentioned technical problems, the rigid connector for this building includes a segmented inner support core and a fastening clamp assembly sleeved on the outside of the segmented inner support core; wherein, the segmented inner support core has a pair of limiting lugs and a pair of through holes symmetrically arranged in the middle, and the two ends of the segmented inner support core extend symmetrically to form secondary insertion ends, the outer wall of the secondary insertion ends having a stepped diameter-changing structure to adapt to the ports of pipe fittings with different inner diameter tolerances; the fastening clamp assembly includes two symmetrically arranged corrugated clamp units, the... The inner wall of the corrugated clamp unit has a corrugated concave-convex structure. A support bolt is fixed on one side of the corrugated clamp unit, and a through hole is provided on the other side of the corrugated clamp unit. After the support bolt passes through the through hole on the segmented inner support core and the through hole on the other side of the corrugated clamp unit, a fastening nut is installed. The two corrugated clamp units are connected by the support bolt and locked by the fastening nut to clamp and fix the port of the pipe to be connected on the segmented inner support core.

[0006] Furthermore, the limiting lug and the supporting bolt form a primary support step, and the outer diameter of the secondary insertion end gradually decreases from the end near the limiting lug to the end away from the limiting lug, forming several secondary support steps.

[0007] Furthermore, the two sides of the wave-shaped clamp unit are provided with positioning slots that are adapted to the shape of the limiting lugs. In the locked state, the limiting lugs are engaged in the positioning slots.

[0008] The beneficial effects of this utility model of a rigid connector for construction are as follows: it overcomes the defects of insufficient rigidity and resistance to external forces in existing steel pipe connectors, as well as poor adaptability to inner diameter tolerances. It uses limiting lugs and supporting bolts to form a primary support step, realizing four-point balanced limiting of the ends of the pipes to be connected, preventing eccentric loading; combined with the stepped secondary insertion end to adapt to pipe diameter tolerances, and the elastic clamping and mechanical interlocking of the wave-shaped clamp, it realizes a rigid connection with high shear resistance. Attached Figure Description

[0009] The following description, in conjunction with the accompanying drawings, further illustrates a rigid connector for building applications according to this utility model: Figure 1 This is a structural schematic diagram of the rigid connectors used in this building; Figure 2 yes Figure 1 Exploded view of the structure (view from the left); Figure 3 yes Figure 1 Exploded view of the structure (view from the right); Figure 4 This is a reference diagram showing the usage status of the rigid connectors used in this building; Figure 5 yes Figure 4 Exploded view of the structure.

[0010] In the picture: 1-Segmented inner support core; 11-Limiting lug; 12-Through hole; 13-Secondary insertion end; 2-Fastening clamp assembly; 21-Clamp unit; 22-Support bolt; 23-Through hole; 24-Fastening nut; 25-Positioning bayonet. 3- Fittings to be connected. Detailed Implementation

[0011] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0012] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model.

[0013] The present invention will be further described below with specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.

[0014] Example: Figures 1 to 3 As shown, this rigid connector is used to connect two pipe fittings 3 (such as building steel pipes). It mainly consists of a segmented inner support core 1 placed inside the pipe and a fastening clamp assembly 2 placed outside the pipe. The segmented inner support core 1 provides the main support, with a pair of elongated limiting lugs 11 symmetrically arranged in its middle, and a pair of through holes 12 perpendicular to the lugs. The secondary insertion ends 13 extending from both ends of the core adopt a stepped design, with the outer diameter decreasing step by step. This design constructs a two-level support system: the primary support step surface is composed of the limiting lugs 11 in the middle and the supporting bolts 22 passing through the core. These four support points (two lugs + two ends of the bolts) form a "cross-shaped" blocking surface to limit the insertion depth of the pipe fittings 3 to be connected. The secondary support step surface is composed of several steps on the secondary insertion ends 13. Smaller diameter fittings are fitted onto the small step at the end, while larger diameter fittings are fitted onto the large step at the root, thus accommodating pipes with different tolerances. The fastening clamp assembly 2 includes two corrugated clamp units 21, whose corrugated concave-convex structure on the inner wall increases friction and provides elastic anti-loosening function. A support bolt 22 is welded or fixed to one of the clamp units. The edge of the clamp unit also has a positioning slot 25.

[0015] When using: such as Figure 4 , 5As shown, the construction worker first inserts the segmented inner support core 1 into the lower pipe fitting until the pipe fitting end abuts against the limiting lug 11. Then, the upper pipe fitting is fitted onto the other end of the core, again until it abuts against the limiting lug 11. At this point, the clamp unit 21 with the supporting bolt 22 is fastened to the pipe fitting joint, allowing the supporting bolt 22 to pass sequentially through the first layer of pipe wall (if the pipe wall has pre-drilled holes) or directly through the through hole 12 on the core (in this embodiment, the supporting bolt 22 mainly passes through the core, with both ends exposed in the gap between the two pipes for limiting, or the pipe end has a corresponding U-shaped groove to accommodate the bolt). After the supporting bolt 22 passes through the through hole 23 of the clamp unit 21 on the other side, the fastening nut 24 is tightened. During this process, the limiting lug 11 precisely engages in the positioning slot 25, preventing the clamp from rotating. As the nuts are tightened, the wave-shaped clamp presses the two pipes onto the stepped core inside, and the support bolt 22 passes through it like a pin, forming an extremely strong rigid connection.

[0016] The rigid connectors used in this building employ limiting lugs and supporting bolts to form a primary support step, achieving four-point balanced limiting at the ends of the pipe fittings to be connected, preventing uneven loading. Combined with stepped secondary insertion ends to accommodate pipe diameter tolerances, and the elastic clamping and mechanical interlocking of the corrugated clamp, a rigid connection with high shear resistance is achieved. Specifically, (1) Strong connection rigidity: The combination of "internal support + external clamping + through" is adopted. In particular, the supporting bolt 22 directly penetrates the inner support core 1, which plays the role of a high-strength pin. Combined with the strong restraint of the external wave-shaped clamp, the connection structure has extremely high shear and bending resistance.

[0017] (2) Four-point limiting and force balance: The first-level support step formed by the limiting lug 11 and the supporting bolt 22 realizes the four-point balanced support of the pipe fitting port to be connected, avoiding the pipe fitting deviation caused by traditional single-point or two-point limiting.

[0018] (3) Good tolerance adaptability: The stepped diameter-changing structure of the secondary insertion end 13 can accommodate steel pipes with different wall thicknesses and inner diameter tolerances, solving the installation difficulties caused by inconsistent steel pipe specifications at the construction site.

[0019] (4) Excellent anti-loosening effect: The limiting lug 11 is engaged in the positioning slot 25, realizing the mechanical interlock between the core and the clamp, preventing the clamp from rotating; at the same time, the wave-shaped clamp has a unique elastic deformation capability, which can continuously provide radial preload to prevent the nut from loosening.

[0020] The above description illustrates the main features, basic principles, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments or examples described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments or examples should be considered exemplary and not restrictive. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] 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 rigid connector for building construction, characterized in that: It includes a segmented inner support core (1) and a fastening clamp assembly (2) sleeved on the outside of the segmented inner support core (1); wherein, The segmented inner support core (1) is symmetrically provided with a pair of limiting lugs (11) and a pair of through holes (12) in the middle. The two ends of the segmented inner support core (1) extend symmetrically to form secondary insertion ends (13). The outer wall of the secondary insertion ends (13) has a stepped variable diameter structure to adapt to the ports of the pipe fittings (3) to be connected with different inner diameter tolerances. The fastening clamp assembly (2) includes two symmetrically arranged wave-shaped clamp units (21). The inner wall of the wave-shaped clamp unit (21) has a wave-shaped concave-convex structure. A support bolt (22) is fixed on one side of the wave-shaped clamp unit (21), and a through hole (23) is provided on the other side of the wave-shaped clamp unit (21). The supporting bolt (22) passes through the through hole (12) on the segmented inner support core (1) and the through hole (23) on the other side of the wave-shaped clamp unit (21) and is fitted with a fastening nut (24). The two wave-shaped clamp units (21) are connected by the supporting bolt (22) and locked by the fastening nut (24) to clamp and fix the port of the pipe fitting (3) to be connected on the segmented inner support core (1).

2. The rigid connector for building construction according to claim 1, characterized in that: The limiting lug (11) and the supporting bolt (22) form a primary support step, and the outer diameter of the secondary insertion end (13) gradually decreases from the end near the limiting lug (11) to the end away from the limiting lug (11), forming a number of secondary support steps.

3. The rigid connector for building construction according to claim 2, characterized in that: The two sides of the wave-shaped clamp unit (21) are provided with positioning slots (25) that are adapted to the shape of the limiting lugs (11). In the locked state, the limiting lugs (11) are inserted into the positioning slots (25).

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