Novel detachable outer frame cantilever structure

Abstract

The utility model discloses a novel detachable outer frame overhanging structure which comprises a structural beam and I-shaped steel located above the structural beam, square steel pipes are embedded in the structural beam in three directions, each square steel pipe is sleeved with a sleeve device, and each sleeve device comprises a conventional square steel sleeve, an L-shaped square steel sleeve and a forked square steel sleeve. The conventional square steel sleeve is connected to the middle square steel pipe in a sleeving mode, the L-shaped square steel sleeve comprises a bottom transverse sleeve connected with the left side square steel pipe in a sleeving mode, and a longitudinal sleeve is welded to one end of the bottom transverse sleeve. By means of three-point type pre-burying, the cantilever outer frame structure foundation is more stable, after an outer frame is completed, the pre-buried square steel pipe can be directly cut off and filled with concrete, the outer frame is not prone to falling off, the structure is simple, the construction is convenient, the construction cost is low, and the construction efficiency is high. And the influence of structural defects and later leakage caused by punching in the structure is avoided, the pre-machined sleeve can be recycled, and the installation is rapid and convenient.

Description

Technical Field

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

[0002] The erection of external frames has always been an important part of the construction process. Cantilever external frames basically involve dangerous and major projects and are the key part of key control in construction. Traditional cantilever external frames are often erected by pre-buried "U-shaped rings" and opening holes in the wall to pick out I-beams. This method will leave the "channel steel layer" leakage risk, and holes will be opened in the structural wall, destroying the wall structure. Utility Model Content

[0003] The utility model aims to address the deficiencies of the prior art and provide a novel detachable external frame cantilever structure, comprising a structural beam and an I-beam located above the structural beam, wherein square steel pipes are pre-buried in three directions on the structural beam, each of the square steel pipes is sleeved with a sleeve device, and the sleeve device comprises a conventional square steel sleeve, an L-shaped square steel sleeve and a bifurcated square steel sleeve, wherein the conventional square steel sleeve is sleeved on the middle square steel pipe, and the top of the conventional square steel sleeve is fixedly connected to the I-beam, The L-shaped square steel casing includes a bottom transverse casing which is sleeved with the left square steel pipe, and an upwardly extending longitudinal casing is welded to the end of the bottom transverse casing away from the structural beam, and the top of the longitudinal casing is fixedly connected to the I-beam; the forked square steel casing structure is the same as the L-shaped square steel casing, wherein the bottom transverse casing in the forked square steel casing is sleeved on the right square steel pipe, and an oblique casing is provided on the surface of the longitudinal casing in the forked square steel casing, and the oblique casing is fixedly connected to the I-beam.

[0004] Preferably, 200mm×200mm steel gaskets are welded on the four sides of the top of the conventional square steel casing, and holes are evenly and symmetrically opened on all sides of the steel gasket for M30 bolts to pass through and connect with the I-beam bolts.

[0005] Preferably, the connection method between the longitudinal sleeve and the I-beam in the L-shaped square steel sleeve and the bifurcated square steel sleeve is the same as the connection method between the conventional square steel sleeve and the I-beam.

[0006] Preferably, a limiting hole with a diameter of 10 mm is opened at 40 mm from the bottom of the conventional square steel casing that is sleeved with the embedded square steel pipe, and a limiting pin is inserted therein for limiting.

[0007] Preferably, the bottom transverse sleeve in the L-shaped square steel sleeve and the forked square steel sleeve is provided with a limiting hole on the sleeve that is connected with the embedded square steel pipe, and the limiting is performed by inserting a limiting pin.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the utility model positions the embedded square steel pipes on the structural beams in advance, performs detachable standardized square steel pipe casing processing in advance according to the size of the embedded square steel pipes, processes different types of square steel casing structures in advance, can be directly assembled and constructed on site, can be disassembled and circulated after the construction is completed, and can realize the construction of assembled cantilever external frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 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:

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the structure of a conventional square steel casing;

[0012] Figure 3 It is a schematic diagram of the L-shaped square steel casing structure;

[0013] Figure 4 This is a schematic diagram of the bifurcated square steel casing structure.

[0014] In the figure: 1. Square steel tube. 2. I-beam. 3. M30 bolt. 4. L-shaped square steel casing. 5. Forked square steel casing. 6. Limit pin. 7. Structural beam. 8. Conventional square steel casing. 9. Steel gasket. 10. Bottom horizontal casing. 11. Longitudinal casing. 12. Oblique casing. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is described in detail below with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the embodiments.

[0016] Reference Figures 1 to 4The utility model discloses a novel detachable external frame cantilever structure, including a structural beam 7 and an I-beam 2 located above the structural beam 7. Square steel pipes 1 are pre-buried in three directions on the structural beam 7. Each of the square steel pipes 1 is sleeved with a casing device, and the casing device includes a conventional square steel casing 8, an L-shaped square steel casing 4 and a forked square steel casing 5. The conventional square steel casing 8 is sleeved on the middle square steel pipe, and the top of the conventional square steel casing 8 is fixedly connected to the I-beam 2. The L-shaped square steel casing 4 includes a bottom transverse casing 10 sleeved with the left square steel pipe, and the end of the bottom transverse casing 10 away from the structural beam 7 is welded with a longitudinal casing 11 extending upward, and the top of the longitudinal casing 11 is connected to the I-beam 2. The structure of the bifurcated square steel casing 5 is the same as that of the L-shaped square steel casing 4, wherein the bottom transverse casing 10 in the bifurcated square steel casing 5 is sleeved on the right square steel pipe, and the surface of the longitudinal casing 11 in the bifurcated square steel casing 5 is provided with an oblique casing 12, and the oblique casing 12 is fixedly connected to the I-beam 2. The top four sides of the conventional square steel casing 8 are welded with 200mm×200mm steel gaskets 9, and the steel gaskets 9 have holes evenly and symmetrically opened around them, and are used for M30 bolts to pass through and are bolted to the I-beam 2. The connection method between the longitudinal casing 11 in the L-shaped square steel casing 4 and the bifurcated square steel casing 5 and the I-beam 2 is the same as the connection method between the conventional square steel casing 8 and the I-beam 2.

[0017] In this technical solution, three standardized detachable frames are connected to the I-beam 2 by M30 bolts. The three standardized detachable components are conventional square steel casing 8, L-shaped square steel casing 4 device, and forked square steel casing 5 device. Conventional square steel casing 8 is welded to the four sides of the square steel casing by 200mm×200mm steel gasket 9. Holes are evenly and symmetrically opened around the steel gasket 9 to ensure that the M30 bolts can pass through. The bottom transverse casing 10 of the L-shaped square steel casing 4 device is welded to the longitudinal casing 11, and the longitudinal square steel casing structure is the same as the conventional square steel casing 8. The bottom transverse casing 10 of the forked square steel casing 5 device is welded to the longitudinal casing 11, and the forked connection is fixed by welding. The top of the longitudinal and oblique casing 12 is the same as the conventional square steel casing 8. The steel gasket 9 of the oblique casing 12 needs to adopt a specification of 300mm×300mm.

[0018] The ratio of the distance from the tail to the end of the I-beam 2 to the distance from the pre-buried square steel casing on the outer side of the cantilever external frame structure to the end of the I-beam 2 (ie, L1:L2) is controlled within 1.25.

[0019] The construction method of the utility model is as follows:

[0020] Pre-embedded square steel pipes are positioned in three directions on the structural beam 7, with a pre-embedded depth of 1 / 2 to 2 / 3 of the structural thickness, a square steel pipe size of 80 mm × 80 mm, an inner square steel pipe centerline is one-third of the height of the structure from the top of the structure, a middle pre-embedded square steel pipe is located in the middle of the structure, and an outer square steel pipe centerline is one-third of the height of the structure from the bottom of the structure.

[0021] A hole is made in the flange of the I-beam 2 by using the pre-buried square steel tube, and the hole should be able to ensure that the M30 bolt 3 can pass through.

[0022] The conventional square steel casing 8, the L-shaped square steel casing 4 and the bifurcated square steel casing 5 are pre-processed.

[0023] The conventional square steel casing 8 is welded on four sides of a 90mm×90mm square steel tube and a steel gasket 9. Holes are evenly and symmetrically opened on all sides of the steel gasket 9. The hole diameter is required to ensure that the M30 bolt 3 can pass through. The conventional square steel casing 8 is connected to the I-beam 2 by an M30 bolt 3. A limit hole with a diameter of 10mm is opened at 40mm from the bottom of the pre-buried square steel tube sleeve, and a limit pin 6 is inserted inside for limiting.

[0024] The bottom sleeve of the L-shaped square steel sleeve 4 is welded to the longitudinal sleeve 11, and the top structure of the longitudinal sleeve 11 is the same as the conventional square steel sleeve 8. A limiting hole is provided on the sleeve of the bottom transverse sleeve 10 of the L-shaped square steel sleeve 4 and the embedded square steel pipe sleeve, and the limiting is performed by inserting a limiting pin 6.

[0025] The bottom transverse sleeve 10 of the forked square steel sleeve 5 is welded to the longitudinal sleeve 11, and welding is used at the bifurcation. The top of the longitudinal and oblique sleeves 12 are the same as the conventional square steel sleeve 8. The steel gasket 9 of the oblique sleeve 12 needs to adopt a specification of 300mm×300mm. A limiting hole is opened on the sleeve where the bottom transverse sleeve 10 in the forked square steel sleeve 5 is connected with the embedded square steel pipe, and the limiting is performed by inserting a limiting pin 6.

[0026] The above-mentioned pre-processed sleeves and embedded parts and I-beam 2 are installed to ensure that the ratio of the distance from the tail to the end of the I-beam 2 to the distance from the embedded square steel sleeve on the outside of the cantilever external frame structure to the end of the I-beam 2 (i.e. L1:L2) is controlled within 1.25 to form a new cantilever external frame structure foundation.

[0027] The utility model uses three-point pre-embedding to make the cantilevered external frame structure foundation more stable. After the external frame is completed, the pre-embedded square steel pipe can be directly cut and filled with concrete, avoiding structural defects and later leakage caused by opening holes in the structure. The pre-processed casing can be recycled, and the installation is quick and convenient. The use cost is low.

[0028] As above, although the utility model has been shown and described with reference to a specific preferred embodiment, it should not be interpreted as limiting the utility model itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the utility model defined in the attached claims.

Claims

1. A novel detachable external frame cantilever structure, comprising a structural beam and an I-beam located above the structural beam, characterized in that: The structural beam is pre-buried with square steel tubes in three directions, and each of the square steel tubes is sleeved with a sleeve device, the sleeve device includes a conventional square steel sleeve, an L-shaped square steel sleeve and a forked square steel sleeve, the conventional square steel sleeve is sleeved on the middle square steel tube, the top of the conventional square steel sleeve is fixedly connected to the I-beam, the L-shaped square steel sleeve includes a bottom transverse sleeve sleeved with the left square steel tube, the end of the bottom transverse sleeve away from the structural beam is welded with a longitudinal sleeve extending upward, and the top of the longitudinal sleeve is fixedly connected to the I-beam; the forked square steel sleeve structure is the same as the L-shaped square steel sleeve, wherein the bottom transverse sleeve in the forked square steel sleeve is sleeved on the right square steel tube, and the surface of the longitudinal sleeve in the forked square steel sleeve is provided with an oblique sleeve, and the oblique sleeve is fixedly connected to the I-beam.

2. According to claim 1, the novel detachable external frame cantilever structure is characterized in that: The top four sides of the conventional square steel casing are welded with 200mm×200mm steel gaskets, and the steel gaskets are evenly and symmetrically opened with holes around them for M30 bolts to pass through and be connected with I-beam bolts.

3. The novel detachable external frame cantilever structure according to claim 2 is characterized in that: The connection mode between the longitudinal sleeve and the I-beam in the L-shaped square steel sleeve and the bifurcated square steel sleeve is the same as the connection mode between the conventional square steel sleeve and the I-beam.

4. The novel detachable external frame cantilever structure according to claim 3 is characterized in that: The conventional square steel casing and the pre-buried square steel pipe are sleeved with a limiting hole of 10 mm in diameter at a distance of 40 mm from the bottom, and a limiting pin is inserted therein for limiting.

5. The novel detachable external frame cantilever structure according to claim 4 is characterized in that: The bottom transverse sleeve in the L-shaped square steel sleeve and the bifurcated square steel sleeve is provided with a limiting hole on the sleeve that is sleeved with the embedded square steel pipe, and the limiting is performed by inserting a limiting pin.

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