Novel cantilever frame

Abstract

The novel cantilever frame comprises a plurality of cantilever beam I-beams which are fixed on a floor slab and extend out of the floor slab to be arranged in parallel, a lug plate is fixedly arranged at the position, 1m away from the tail portion, of each cantilever beam I-beam, and a steel wire rope is bound to the position, provided with an opening, of the lug plate and located in a hole. One end, far away from the cantilever beam I-shaped steel, of the steel wire rope is fixedly bound on the flower basket, one end, far away from the cantilever beam I-shaped steel, of the flower basket is fixed on the through-wall screw rod, and the through-wall screw rod is embedded in an upper floor. And meanwhile, the defect that the traditional cantilever frame I-shaped steel needs to be internally anchored too long is avoided. Through reasonable design, the cross section size of the I-shaped steel of the cantilever beam does not need to be increased excessively in an unconventional overlong cantilever. The cantilever frame is suitable for various cantilever lengths, is convenient to construct, does not need professional customization of factory processing, well adapts to site construction progress and site construction requirements, has enough reliability, and ensures the safety of an outer frame.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a novel cantilever frame. Background Art

[0002] External frame protection is a common safety protection method used in buildings of all heights. The external frames currently used are mainly floor-standing external frames and cantilever external frames. For buildings with higher storeys, cantilever frames are often used. Cantilever external frames are divided into conventional cantilever frames, flower basket cantilever scaffolding, and other special-shaped cantilever frames designed for special circumstances. Both conventional cantilever frames and flower basket frames have major shortcomings and cannot fully meet the actual requirements of the site. For example, the rear end anchor of an ordinary cantilever frame is too long, which wastes materials, makes construction difficult, and is not easy to install and dismantle. The flower basket frame has high construction quality requirements and complex processes, and requires the factory to process special cantilever beams and I-beams. The embedded bolts have high precision requirements, and their construction quality determines the safety of the frame, resulting in high construction costs. Utility Model Content

[0003] The utility model aims to address the deficiencies of the prior art and provides a novel cantilever frame, comprising a plurality of cantilever I-beams fixed on a floor slab and extending out of the floor slab in parallel, wherein the cantilever I-beams are fixedly provided with ear plates at a position 1m away from the tail, the ear plates have openings and steel wire ropes are tied in the holes, one end of the steel wire ropes away from the cantilever I-beams is fixedly tied to a flower basket, and the other end of the flower basket away from the cantilever I-beams is fixed to a through-wall screw, which is pre-buried in the upper floor slab.

[0004] Preferably, one end of several of the cantilever beam I-beams located inside the floor slab is fixed by a U-shaped anchor bar, and the U-shaped anchor bar is pre-embedded inside the floor slab.

[0005] Preferably, blocks are provided on the floor slab on the left and right sides of the cantilever beam I-steel, and the blocks are used to resist the shear force of the cantilever beam I-steel in the horizontal direction.

[0006] Preferably, a longitudinal connecting beam fixed to the floor slab is provided at the bottom of several of the cantilever beam I-beams, and the longitudinal connecting beam serves as a lateral support for the cantilever beam I-beams to fix all the cantilever beam I-beams together.

[0007] Preferably, the cantilever beam I-beam is 2m long No. 16 I-beam.

[0008] Preferably, the wall-penetrating screw is made of round steel with a diameter of 18 mm.

[0009] Preferably, the U-shaped anchoring bar is a U-shaped bar with a diameter of 16 mm.

[0010] Compared with the existing technology, the present invention offers the following advantages: through rational mechanical design, it avoids the need for pre-embedded bolts in the flower basket frame, similarly avoiding the drawback of traditional cantilever frames requiring excessively long I-beam anchors. This rational design eliminates the need to significantly increase the cross-sectional dimensions of the cantilever I-beam for unusually long cantilevers. This cantilever frame is suitable for various cantilever lengths and is easy to construct, requiring no specialized factory customization. It adapts well to on-site construction schedules and requirements, and offers sufficient reliability to ensure the safety of the external frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic structural diagram of the utility model.

[0013] In the figure: 1. Block; 2. Cantilever beam I-beam; 3. Ear plate; 4. U-shaped anchor bar; 5. Steel wire rope; 6. Flower basket; 7. Through-wall screw; 8. Longitudinal connecting beam. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0015] Reference Figure 1 The utility model discloses a novel cantilever frame, comprising a plurality of cantilever beam I-beams 2 fixed on a floor slab and extending out of the floor slab in parallel, the cantilever beam I-beams 2 are fixedly provided with an ear plate 3 at a position 1m away from the tail, the ear plate 3 is opened and a steel wire rope 5 is tied in the hole, the end of the steel wire rope 5 away from the cantilever beam I-beam is fixedly tied to a flower basket 6, the end of the flower basket 6 away from the cantilever beam I-beam is fixed to a through-wall screw 7, the through-wall screw 7 is pre-buried in the upper floor slab, the ends of the cantilever beam I-beams located in the floor slab are fixed by U-shaped anchor bars 4, the U-shaped anchor bars 4 are pre-buried in the floor slab, and blocks 1 are provided on the floor slab on the left and right sides of the cantilever beam I-beams, and the blocks 1 are used to resist the shear force of the cantilever beam I-beams in the horizontal direction.

[0016] This utility model features a new cantilever frame design, including the selection of cantilever I-beam cross-sections, wire rope selection, block placement, upper wall-penetrating screws, and lower I-beam lug positioning and lug design. This design is primarily suitable for double-row scaffolding, with a cantilever length of 1500mm to ensure versatility. For longer cantilever lengths, minor adjustments to the relevant component parameters can be made based on this design.

[0017] According to the principle that the positive and negative bending moments of the cantilever beam I-beam are equal, the I-beam ear plate is set at the 1m position instead of the commonly used cantilever beam end.

[0018] The cantilever beam I-beam is 2m long, using 16-gauge I-beams. The through-wall screws are 18-gauge round steel. The wire rope is 16-gauge wire rope, which is kept in tension. The stoppers are 10-gauge channel steel. The rear anchor U-shaped anchor bars are 16-gauge U-shaped bars. The lifting lugs are 200mm long and 200mm high, with 80mm diameter holes.

[0019] The present invention eliminates the wall-penetrating screws of the flower basket frame and adopts the traditional cantilever frame end fixing structure. The cantilever beam I-beam is placed on the floor slab, and a baffle is specially provided. However, the force mode is mainly through the front-end tensioning wire rope, and the end node support is under pressure. The vertical shear force of the cantilever frame is transmitted through the floor slab, and the horizontal block is provided to resist the horizontal shear force. The U-shaped anchor bar in the present invention is not used in the traditional cantilever frame, and only plays a role in positioning and fixing, and does not bear upward pulling force. Since the mechanical calculation model of the present invention is different from that of the traditional cantilever frame, there is no requirement for the length of the inner anchor I-beam. For structural purposes, the inner extension length is taken as 500mm.

[0020] In the present invention, the U-shaped anchor bar has a diameter of 16 and is provided in two, one of which is 10mm away from the side beam and the other is 400mm away from the side beam. The cantilever beam I-beam is lifted to the designated floor by a tower crane and firmly anchored by the U-shaped anchor bar. In addition, the bottom of several of the cantilever beam I-beams is provided with a longitudinal connecting beam 8 fixed to the floor slab. The longitudinal connecting beam 8 serves as a lateral support for the cantilever beam I-beam and fixes all the cantilever beam I-beams together. The longitudinal connecting beam is located at the front end of the lifting ear. The longitudinal connecting beam connects all the cantilever beams into a whole. The first function is to serve as a lateral support for the cantilever I-beam to prevent the cantilever I-beam from bending and torsion and becoming unstable. The second function is to connect all the cantilever I-beams into one. The failure of one cantilever I-beam does not affect the safety of the overall cantilever frame.

[0021] Through rational mechanical design, this new cantilever frame eliminates the need for pre-embedded bolts in the flower basket frame, similarly avoiding the drawback of traditional cantilever frames requiring excessively long I-beam internal anchors. This rational design eliminates the need to significantly increase the cross-sectional dimensions of the cantilever I-beam for unusually long cantilevers. This cantilever frame is adaptable to various cantilever lengths and is easy to construct, eliminating the need for specialized factory customization. It adapts well to on-site construction schedules and requirements, and offers sufficient reliability to ensure the safety of the external frame.

[0022] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A new cantilever frame, characterized by: It includes several cantilever beam I-beams fixed on the floor slab and extended out of the floor slab in parallel. The cantilever beam I-beam is fixed with an ear plate at a position 1m away from the tail. The ear plate has an opening and a steel wire rope is tied in the hole. The end of the steel wire rope away from the cantilever beam I-beam is fixed to the flower basket. The end of the flower basket away from the cantilever beam I-beam is fixed to the wall screw. The wall screw is pre-buried in the upper floor slab.

2. A novel cantilever frame according to claim 1, characterized in that: One end of a plurality of cantilever beam I-steels located inside the floor slab is fixed by a U-shaped anchor bar, and the U-shaped anchor bar is pre-buried inside the floor slab.

3. The novel cantilever frame according to claim 2 is characterized in that: Stoppers are provided on the floor slab on the left and right sides of the cantilever beam I-steel, and the stoppers are used to resist the shear force of the cantilever beam I-steel in the horizontal direction.

4. The novel cantilever frame according to claim 3 is characterized in that: The bottoms of several of the cantilever beam I-steels are provided with longitudinal connecting beams fixed on the floor slab. The longitudinal connecting beams serve as lateral supports for the cantilever beam I-steels and fix all the cantilever beam I-steels together.

5. The novel cantilever frame according to claim 4 is characterized in that: The cantilever beam I-beam adopts 2m long No. 16 I-beam.

6. The novel cantilever frame according to claim 5 is characterized in that: The wall-penetrating screw is made of round steel with a diameter of 18 mm.

7. The novel cantilever frame according to claim 6 is characterized in that: The U-shaped anchoring bar is a U-shaped bar with a diameter of 16 mm.

Images