Square steel connecting piece for novel building materials

Abstract

The utility model relates to the field of building materials, in particular to a square steel connecting piece for a novel building material, which comprises a floor support plate bottom die, a steel bar truss and a connecting piece, the steel bar truss consists of an upper chord rib, a lower chord rib and a web member, the connecting piece is connected with the floor support plate bottom die through bolts, and the connecting piece is of a hollow tubular structure with two through sides. A through hole is formed in the front face of the connecting piece, a first clamping opening and a second clamping opening with outward openings are formed in the end faces of the two sides of the connecting piece, an inclined face extending downwards is arranged above the second clamping opening, and the lower chord ribs are clamped in the first clamping opening and the second clamping opening respectively. The stability of the steel bar truss in the cement pouring process is enhanced, the possibility that the steel bar truss falls off in the construction process is reduced, and the problems in the background technology can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of building materials, and in particular to a square steel connector for a new type of building material. Background Technology

[0002] Floor decking and steel trusses are commonly used composite components in steel structure buildings, mainly used for floor slab construction and load-bearing. On the construction site, steel trusses and galvanized profiled steel sheets are connected as a whole by resistance spot welding to form steel truss floor decking. There are various ways to connect floor decking and steel trusses. The most common connection method is to use special connectors. Square steel, as a common connector material, can be used to connect floor decking and steel trusses tightly by welding or bolting, enhancing the integrity and stability of the structure, thereby improving the overall load-bearing capacity.

[0003] A search revealed that patent authorization announcement number CN216042047U discloses a non-removable steel truss floor deck. This utility model adopts the following technical solution: several connectors are installed in a row on the upper surface of the floor deck bottom formwork, parallel to each other and aligned at both ends. The steel truss is installed on the connectors in a row. Supports are vertically arranged above the two opposite sides of the connector base plate. The top surface of the support has convex arc surfaces extending downwards at both ends. A locking slot is provided below the bottom surface of the convex arc surface, and a concave arc surface extends upwards from the bottom edge of the locking slot. The two lower chord bars of the steel truss are respectively locked into the two locking slots.

[0004] In practical application, some shortcomings of the above application have been found: when pouring concrete, the steel truss will vibrate, and at the same time, the lower chord of the steel truss may fall off from the clamp position, causing the steel truss to detach from the connector, thereby affecting the flatness of the cement surface.

[0005] Therefore, it is necessary to further improve the square steel connectors used in new building materials. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide a new type of square steel connector for building materials. By adding a locking structure to the connector, the stability of the steel truss during the cement pouring process is enhanced, and the possibility of the steel truss falling off during construction is reduced, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a square steel connector for a new type of building material, comprising a floor slab bottom formwork, a steel truss, and a connector. The steel truss is composed of an upper chord bar, a lower chord bar, and web members. The connector and the floor slab bottom formwork are connected by bolts. The connector is a hollow tubular structure with through-holes on both sides. A through hole is provided on the front of the connector. Two slots with outward openings are provided on the two end faces of the connector. A downwardly extending inclined surface is provided above the slot two. The lower chord bar is respectively fitted into the slot one and the slot two.

[0008] Preferably, the cross-section of the first bayonet is U-shaped, and the cross-section of the second bayonet is hook-shaped with the lateral portion completely outside the inclined plane.

[0009] Preferably, the curved sections of the first and second bayonets are both semicircles of the same size, and their diameters are interference-fitted with the outer circumference of the lower chord.

[0010] Preferably, the length of the transverse portion of the first bayonet section is greater than the length of the transverse portion of the second bayonet section, and the first bayonet and the second bayonet are on the same reference plane.

[0011] Preferably, the cross-sectional shape of the through hole is elliptical.

[0012] Preferably, the connector is a square steel.

[0013] The working principle and usage principle of this utility model are as follows: When pre-assembling the steel truss, floor deck formwork and connectors in the factory, the bottom surface of the connectors is fixed to the surface of the floor deck formwork by bolts. The steel trusses are placed close to each other in pairs, and the corresponding connectors are close to each other. The two lower chord bars of the steel truss are fixed by first inserting one lower chord bar into the first slot, and then pressing the upper chord bar down so that the other lower chord bar enters the second slot through the inclined surface under pressure, thereby achieving fixation.

[0014] During concrete pouring, the steel truss, floor slab formwork, and connectors form a whole and are brought to the construction site by workers for installation. Through the cooperation of the two adjacent connectors' locking slots, the connectors can effectively limit the steel truss, reducing the possibility of the steel truss falling off during the concrete pouring process and enhancing the stability of the overall structure. The elliptical through-hole design not only enhances stability but also saves materials.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The first clamp ensures the position of the first lower chord reinforcement, providing a clear reference point for installing the steel truss. Operators only need to focus on pressing the second lower chord reinforcement, without needing to simultaneously handle two reinforcement bars, reducing operational complexity and effort, and lowering installation difficulty. Due to the design of the first and second clamps, the reinforcement bars are less likely to pop out and fall off during concrete pouring in the floor slab, enhancing structural stability and ensuring smooth construction. Simultaneously, the through-hole design enhances the overall structure of the connector while saving materials. The preferred material for the connector is square steel, which is generally integrally formed through hot rolling or cold drawing processes. Its internal structure is dense and uniform, resulting in good overall structural strength and stability, capable of withstanding significant external forces and pressures. It is suitable for structural components with high strength requirements, such as building components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the connector;

[0018] Figure 3 This is a schematic diagram of the installation of adjacent connecting parts.

[0019] Explanation of reference numerals in the attached drawings: 1. Bottom formwork of floor deck; 2. Steel truss; 3. Top chord reinforcement; 4. Bottom chord reinforcement; 5. Web member; 6. Connector; 7. Clamp one; 8. Clamp two; 9. Inclined surface; 10. Through hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.

[0021] Please see Figure 1-3This utility model provides a technical solution: a square steel connector for a new type of building material, including a floor deck formwork 1, a steel truss 2, and a connector 6. The steel truss 2 consists of one upper chord bar 3, two lower chord bars 4, and web members 5. The web members 5 are welded to the lower chord bars 4 and the upper chord bars 3 respectively. The cross-section formed by the upper chord bars 3 and the lower chord bars 4 is the three vertices of a triangle. The triangular cross-section of the steel truss 2 has good stability. The floor deck formwork 1 and the connector 6 are fixedly connected by bolts for easy disassembly. The steel truss 2 is installed on the connector 6 and placed close together. Corresponding adjacent connectors 6 are placed close together. The connector 6 is a hollow tubular structure with through-bodies on both sides. The surface is provided with through holes 10, and the cross-sectional shape of the through holes 10 is elliptical. The elliptical through hole 10 structure is more stable than the circular through hole 10, which is beneficial to save materials while improving structural stability, thereby reducing the self-weight of the overall structure, reducing the load on the lower structure, and indirectly improving stability. Through the reasonable through holes 10, the stress distribution of the connector 6 can be optimized, reducing stress concentration, thereby improving the load-bearing capacity and stability of the structure. The through holes 10 provide convenience for pipeline crossing. The elliptical through holes 10 can accommodate the displacement of the connector 6 caused by thermal expansion and contraction in environments with large temperature changes, or compensate for minor errors in manufacturing or installation, reduce installation difficulty, and improve efficiency.

[0022] like Figures 1-3 As shown, two outward-facing latches 7 and 8 are respectively provided on the two end faces of the connector 6. Latch 7 and latch 8 are at the same height and located on the same reference plane. A downward-extending inclined surface 9 is provided above latch 8. The lower chord 4 is fixed in latch 7 and latch 8 respectively by snap-fit. When connecting the steel truss 2 and the connector 6, one lower chord 4 of the steel truss 2 is first inserted into latch 7 for fixing, and then the upper chord 3 is pressed down. The other lower chord 4 is then pressed down. Under the action of the inclined plane 9, it enters the bayonet 2 8, thereby achieving fixation. When operating, the operator can first determine the position of the first lower chord 4, and then focus on the second lower chord 4. There is no need to pay attention to both lower chord 4 at the same time, which simplifies the operation, saves more effort, and reduces operator fatigue. The setting of the inclined plane 9 can better help to allow the lower chord 4 to slide normally while bearing it, making the sliding of the lower chord 4 easy to control. While controlling the sliding speed, it can also ensure that the second lower chord 4 is successfully sent into the bayonet 2 8.

[0023] like Figures 1-3As shown, the cross-section of the first bayonet 7 is U-shaped, while the cross-section of the second bayonet 8 is hook-shaped, and the lateral part of the second bayonet 8 is completely outside the inclined plane 9. The U-shaped design of the first bayonet 7 makes the first lower chord 4 more firmly fixed and achieves precise positioning, while the hook-shaped design of the second bayonet 8 makes the second lower chord 4 slide more smoothly through the inclined plane 9 and into the second bayonet 8 when pressed. The curved sections of the first bayonet 7 and the second bayonet 8 are both semicircles of the same size. The diameter of the semicircle is interference-fitted with the outer circumference of the lower chord 4 to facilitate the connection between the lower chord 4 and the connector 6. The horizontal length of the first latch 7 is greater than that of the second latch 8. For the latch 7 on the side that does not need to be pressed, the longer horizontal portion provides a larger contact area, which facilitates the initial positioning and alignment of the first lower chord 4 and is also more conducive to the limiting of the first lower chord 4, reducing the probability of vibration and rebound of the lower chord 4 and enhancing the stability of the overall structure. For the latch 8 on the side that needs to be pressed, the shorter horizontal portion can better distribute the force and enhance the load-bearing capacity and deformation resistance of the second latch 8.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A square steel connecting piece for building new materials, comprising a floor slab bottom die (1), a steel bar truss (2) and a connecting piece (6), the steel bar truss (2) is composed of top chord (3), bottom chord (4) and web member (5), characterized in that: The connecting piece (6) and the floor bottom plate (1) are connected by bolts, the connecting piece (6) is a tubular structure with hollow interior and through both sides, the front of the connecting piece (6) is provided with a through hole (10), the two side end faces of the connecting piece (6) are provided with a bayonet I (7) and a bayonet II (8) with opening outward, the upper of the bayonet II (8) is provided with a downward extending inclined surface (9), and the lower chord (4) is respectively clamped in the bayonet I (7) and the bayonet II (8).

2. The square steel connecting piece for a new building material according to claim 1, characterized in that: The cross section of the bayonet I (7) is U-shaped, the cross section of the bayonet II (8) is hook-shaped and the transverse part is completely placed outside the inclined surface (9).

3. The square steel connector for new building materials according to claim 1, characterized in that: The curved part cross sections of the bayonet I (7) and the bayonet II (8) are both semicircles with the same size, and the diameter length is in interference fit with the outer circumference length of the lower chord (4).

4. The square steel connector for new building materials according to claim 1, characterized in that: The transverse part length of the cross section of the bayonet I (7) is greater than that of the bayonet II (8), and the bayonet I (7) and the bayonet II (8) are on the same reference surface.

5. The square steel connector for new building materials according to claim 1, characterized in that: The cross section shape of the through hole (10) is oval.

6. The square steel connector for new building materials according to claim 1, characterized in that: The connecting piece (6) is square steel.

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