Cantilever type buckle connecting device for concrete fireproof outer wrapping plate and steel beam

Abstract

The utility model relates to a concrete fireproof outer wrapping plate and steel beam cantilever type buckle connecting device which is characterized in that the concrete fireproof outer wrapping plate and steel beam cantilever type buckle connecting device comprises an I-shaped steel beam, fireproof side plates and a fireproof bottom plate, and wedge-shaped blocks are welded and installed at the outer ends of the inner sides of an upper flange plate and a lower flange plate of the I-shaped steel beam in advance; the first outer side surface of the wedge-shaped block is welded and fixed on the inner side surface of the upper flange plate or the lower flange plate, and the second outer side surface of the wedge-shaped block is parallel to a web plate of the I-shaped steel beam; the upper part of the inner side surface of the fireproof side plate is provided with a first hook-shaped cantilever buckle used for buckling the wedge block on the upper flange plate; second hook-shaped cantilever buckles used for being connected with wedge-shaped blocks on the lower flange plate in a buckled mode are installed on the upper portions of the inner side faces of the fireproof side plates. Third hook-shaped cantilever buckles used for penetrating through and being buckled with the through grooves in the second hook-shaped cantilever buckles are installed on the two sides of the upper surface of the fireproof bottom plate. The cantilever type buckle connecting device for the concrete fireproof outer wrapping plate and the steel beam is simple and convenient, and the installation efficiency of the fireproof outer wrapping plate and the steel beam can be improved.

Description

Technical Field

[0001] The utility model relates to a cantilevered clip connection device for a concrete fireproof outer cladding plate and a steel beam, which is used to solve the problem of slow construction speed and difficulty in adapting to rapid construction requirements in traditional steel structure residential buildings. Background Art

[0002] The steel beam cladding nodes in steel structure residential buildings are a key technology in this field. The steel beam is not only the main structural element that bears the load, but also an important part that affects the fire resistance and thermal insulation effect of the building.

[0003] Traditional steel beam connection methods, such as welding with studs or fixing with self-tapping screws, although they ensure structural strength, have the following limitations: (1) Low construction efficiency: Traditional steel beam connection technologies, such as on-site multi-hole and welding, lead to extended construction periods and cannot meet the needs of rapid construction; (2) Poor environmental adaptability: On-site welding and other connection methods have high requirements for the construction environment and are easily affected by weather and other environmental factors, which limits the flexibility of construction; (3) Inconsistent connection strength: The use of connection methods such as self-tapping screws may lead to inconsistent connection strength, which may cause safety hazards during the use of the building; (4) High dependence on professional skills: Although connection methods such as welding studs and self-tapping screws can provide a certain structural strength, they require high professional skills from construction personnel, which not only increases training costs but also limits the flexibility of the construction team.

[0004] The Chinese patent "Steel beam cladding node using self-tapping screws" publication number CN 106088467 A was retrieved, including fireproof side panels clad on the inner and outer sides of the steel beam fixedly connected to the wedge blocks using self-tapping screws, and the fireproof bottom plate clad on the bottom plate of the steel beam fixedly connected to the fireproof side panels using self-tapping screws. The patent completely clads the indoor steel beams to obtain good fireproof performance, and has good solutions to the problems of short fire resistance limit of steel beams and difficult insulation of steel beam cold bridges, so that steel structure houses meet living requirements in terms of comfort. The patent has the following disadvantages: ① The on-site casting method is reliable, but the construction period is long and the construction requirements are high, which is difficult to meet the requirements of rapid construction in actual projects; ② The welding studs are fixed by welding to provide high-strength connection, but the construction speed is slow and the welding technology requirements are high; ③ The self-tapping screws are fixed by screwing in, and the construction speed is fast, but the connection strength is relatively low, and the need for pre-drilling has a certain impact on the structural strength. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a cantilevered clip-on connection device for a concrete fireproof outer cladding plate and a steel beam, which has a reasonable design and is conducive to improving the installation efficiency of the fireproof outer cladding plate and the steel beam.

[0006] The utility model is a cantilevered clip-on connection device for concrete fireproof outer cladding plate and steel beam, characterized in that it comprises an I-shaped steel beam, a fireproof side plate and a fireproof bottom plate, wherein the inner outer ends of the upper flange plate and the lower flange plate of the I-shaped steel beam are pre-welded with wedge blocks, the first outer side surface of the wedge block is welded and fixed on the inner side surface of the upper flange plate or the lower flange plate, and the second outer side surface of the wedge block is parallel to the web of the I-shaped steel beam;

[0007] The upper part of the inner side surface of the fireproof side plate is provided with a first hook-shaped cantilever buckle for buckling the wedge-shaped block on the upper flange plate; the upper part of the inner side surface of the fireproof side plate is provided with a second hook-shaped cantilever buckle for buckling the wedge-shaped block on the lower flange plate;

[0008] The third hook-shaped cantilever buckle is installed on both sides of the upper surface of the fireproof bottom plate for passing through and buckling the through groove on the second hook-shaped cantilever buckle.

[0009] Preferably, the ends of the first hook-shaped cantilever buckle and the second hook-shaped cantilever buckle are both provided with a first buckle portion opposite to the inclined wedge surface of the wedge block.

[0010] Preferably, the through slot is provided in the middle of the second hook-type cantilever buckle, and the cross-section of the through slot is trapezoidal. The upper part of the third hook-type cantilever buckle is provided with a second buckle part that can pass through the through slot, and the second buckle part can be buckled in the notch of the through slot.

[0011] Preferably, a top plate is installed on the upper surface of the upper flange plate of the above-mentioned I-shaped steel beam.

[0012] Preferably, the top slab is a cast-in-place concrete slab, a prefabricated slab, or a semi-prefabricated slab with a cast-in-place surface.

[0013] Preferably, a cavity is formed between the web plate of the I-shaped steel beam and the fireproof side plate, and the cavity is filled with thermal insulation and fireproof material.

[0014] The utility model discloses a method for using a cantilever clip connection device for concrete fireproof outer cladding plate and steel beam, which comprises the following steps: welding and fixing the first outer side surface of the wedge block to the inner side surface of the upper flange plate or the lower flange plate and close to the outer edge in advance in the factory, and ensuring that the second outer side surface of the wedge block is parallel to the web of the I-shaped steel beam. In addition, the first hook-type cantilever clip is embedded and fixed on the upper part of the inner side surface of the fireproof side plate, the second hook-type cantilever clip is embedded and fixed on the lower part of the inner side surface of the fireproof side plate, and the third hook-type cantilever clip is embedded and fixed on the upper surface of the fireproof bottom plate. During on-site construction, the third hook-type cantilever clip on the upper surface of the fireproof bottom plate is first inserted into the through groove of the second hook-type cantilever clip, and the first hook-type cantilever clip and the second hook-type cantilever clip on the fireproof side plate are pressed and fitted against the wedge block of the I-shaped steel beam, thereby realizing the installation of the fireproof side plate, the fireproof bottom plate and the I-shaped steel beam.

[0015] Another construction method is that the inner side surface of the fireproof side panel is provided with a stepped surface, which is closer to the outer side surface of the fireproof side panel, the second hook-type cantilever buckle is vertically installed on the stepped surface, and the through groove is set at the height difference between the stepped surface and the inner side surface of the fireproof side panel. The installation steps are to press-fit the first hook-type cantilever buckle and the second hook-type cantilever buckle on the fireproof side panel with the wedge block of the I-shaped steel beam, and then insert the third hook-type cantilever buckle on the upper surface of the fireproof bottom plate into the through groove of the second hook-type cantilever buckle.

[0016] Advantages of the utility model concrete fireproof outer cladding plate and steel beam cantilever buckle connection device:

[0017] (1) Improve construction efficiency: The hook-type cantilever clip adopts a quick plug-in design, which does not require on-site welding or hole alignment, and has a fast construction speed, greatly shortening the construction period.

[0018] (2) Reduce safety risks: Snap-on connections do not require welding, which reduces the risk of working at height and improves the safety of the construction site.

[0019] (3) Process precision: Snap-on connection can provide more uniform and consistent connection quality, reducing construction errors caused by human factors.

[0020] (4) Reduce dependence on professional skills: The snap-on connection method is easy to operate and does not require professional welding skills. Ordinary workers can perform the construction after simple training. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the main exploded view of the utility model;

[0022] Figure 2 It is an exploded view of the utility model;

[0023] Figure 3 is a three-dimensional diagram of the connection between the first hook-shaped cantilever buckle and the wedge-shaped block;

[0024] Figure 4 It is a three-dimensional diagram of the connection between the second hook-type cantilever buckle, the third hook-type cantilever buckle and the wedge block.

[0025] Figure 5 It is a front view of the utility model in an assembled state;

[0026] Figure 6 yes Figure 5 A partial view of the . DETAILED DESCRIPTION

[0027] The utility model discloses a cantilevered clip-on connection device for concrete fireproof outer cladding plate and steel beam, comprising an I-shaped steel beam 1 (the I-shaped steel beam 1 can be a commercially available steel beam), a fireproof side plate 3 and a fireproof bottom plate 4, wherein the fireproof side plate 3 and the fireproof bottom plate 4 are fireproof plates, which are commercially available parts, and the inner outer ends of the upper flange plate 101 and the lower flange plate 102 of the I-shaped steel beam 1 are pre-welded with a wedge block 6, which can be a prism with a right-angled triangle cross-section, and the first outer side surface (i.e., the first right-angled surface) of the wedge block 6 is welded and fixed on the inner side surface 103 of the upper flange plate or the lower flange plate, and is close to the outer end of the upper flange plate or the lower flange plate, and the second outer side surface (i.e., the second right-angled surface) of the wedge block 6 is parallel to the web of the I-shaped steel beam.

[0028] A first hook-shaped cantilever buckle 7 for buckling the wedge-shaped block on the upper flange plate is installed on the upper inner side surface of the fireproof side plate; a second hook-shaped cantilever buckle 8 for buckling the wedge-shaped block on the lower flange plate is installed on the upper inner side surface of the fireproof side plate; the ends of the first hook-shaped cantilever buckle and the second hook-shaped cantilever buckle are both provided with a first buckle portion 10 opposite to the oblique wedge surface of the wedge-shaped block, and the first hook-shaped cantilever buckle and the second hook-shaped cantilever buckle are opposite to the installation position of the wedge-shaped block 6,

[0029] The third hook-type cantilever buckle 9 for passing through and buckling into the through groove 801 on the second hook-type cantilever buckle 8 is installed on both sides of the upper surface of the fireproof bottom plate. Specifically, the through groove 801 is provided in the middle part of the second hook-type cantilever buckle, and the cross-section of the through groove is trapezoidal. The upper part of the third hook-type cantilever buckle is provided with a second buckle part 11 that can pass through the through groove. The second buckle part can be buckled in the notch part of the through groove and can prevent the second buckle part 11 from escaping from the through groove.

[0030] The fireproof side panels and bottom panels are usually blocks or sand aerated concrete blocks. The first hook-type cantilever clip and the second hook-type cantilever clip are pre-embedded and fixed on the fireproof side panels, and the third hook-type cantilever clip is pre-embedded and fixed on the fireproof bottom panel. The base at the tail of each cantilever clip plays a pre-embedded anchoring role.

[0031] During the connection process, the first hook-type cantilever buckle and the first buckle portion 10 on the second hook-type cantilever buckle are directly opposite to the wedge block 6, pushing the fireproof side panel 3 to elastically deform the first buckle portion 10 on the first hook-type cantilever buckle and the second hook-type cantilever buckle. After the first buckle portion 10 passes over the wedge block 6, the first buckle portion 10 rebounds to achieve stable interlocking with the wedge block 6; similarly, the second buckle portion 11 is directly opposite to the through groove, pushing the fireproof bottom plate 4, and inserting the second buckle portion 11 into the through groove. The second buckle portion 11 is elastically deformed. After the second buckle portion 11 passes over the through groove, the second buckle portion 11 rebounds to achieve stable interlocking with the through groove.

[0032] A top plate 2 is installed on the upper surface of the upper flange plate of the above-mentioned I-shaped steel beam. The top plate can be a cast-in-place concrete floor, a prefabricated plate or a semi-prefabricated plus cast-in-place floor. A local section of the lower surface of the I-shaped steel beam (i.e., the bottom surface of the lower flange plate) serves as a supporting point for piles, columns, etc., and the top plate 2 is installed on the upper surface of the I-shaped steel beam (i.e., the upper surface of the upper flange plate).

[0033] A cavity 5 is formed between the web plate and the fireproof side plate of the I-shaped steel beam, and the cavity is filled with a heat-insulating and fire-proof material. The heat-insulating and fire-proof material can be filled in from the end of the I-shaped steel beam.

[0034] The joints between the fireproof side plate 3 and the top plate 2 (or floor plate), between the fireproof side plate 3 and the fireproof bottom plate 4, and between the fireproof bottom plate 4 and the bottom plate of the I-shaped steel beam are filled with fireproof materials to form a blocking layer.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A cantilever snap-on connection device for a concrete fireproof outer panel and a steel beam, characterized in that: It comprises an I-shaped steel beam, a fireproof side plate and a fireproof bottom plate, wherein the inner and outer ends of the upper flange plate and the lower flange plate of the I-shaped steel beam are pre-welded with wedge blocks, the first outer side surface of the wedge block is welded and fixed on the inner side surface of the upper flange plate or the lower flange plate, and the second outer side surface of the wedge block is parallel to the web of the I-shaped steel beam; The upper part of the inner side surface of the fireproof side plate is provided with a first hook-shaped cantilever buckle for buckling the wedge-shaped block on the upper flange plate; the upper part of the inner side surface of the fireproof side plate is provided with a second hook-shaped cantilever buckle for buckling the wedge-shaped block on the lower flange plate; The third hook-shaped cantilever buckle is installed on both sides of the upper surface of the fireproof bottom plate for passing through and buckling the through groove on the second hook-shaped cantilever buckle.

2. The cantilevered buckle connection device of concrete fireproof outer cladding plate and steel beam according to claim 1 is characterized in that: The ends of the first hook-shaped cantilever buckle and the second hook-shaped cantilever buckle are both provided with a first buckle portion opposite to the inclined wedge surface of the wedge block.

3. The cantilever snap-on connection device for concrete fireproof outer cladding plate and steel beam according to claim 1 is characterized in that: The through slot is provided in the middle of the second hook-type cantilever buckle, and the cross-section of the through slot is trapezoidal. The upper part of the third hook-type cantilever buckle is provided with a second buckle part that can pass through the through slot, and the second buckle part can be buckled in the notch of the through slot.

4. The cantilevered buckle connection device of concrete fireproof outer cladding plate and steel beam according to claim 1, 2 or 3, characterized in that: A top plate is installed on the upper surface of the upper flange plate of the I-shaped steel beam.

5. The cantilevered buckle connection device of concrete fireproof outer cladding plate and steel beam according to claim 4 is characterized in that: The top slab is a cast-in-place concrete floor slab, a prefabricated slab, or a semi-prefabricated floor slab with a cast-in-place surface.

6. The cantilevered buckle connection device of concrete fireproof outer cladding plate and steel beam according to claim 5 is characterized in that: A cavity is formed between the web plate of the I-shaped steel beam and the fireproof side plate, and the cavity is filled with heat-insulating and fireproof materials.

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