Formwork-free device for cast-in-place cantilever floor slab of fabricated building boundary beam

Abstract

The utility model relates to the technical field of formwork installation and construction, and discloses a formwork-free device for a cast-in-place cantilever floor slab of a fabricated building boundary beam, which comprises a plurality of steel columns arranged in an array, and a plurality of precast concrete beams connected with each other are arranged between the steel columns; according to the utility model, through the arranged supporting framework mechanism, the arranged triangular framework side formwork can replace a traditional formwork support; after the device and the precast beam are assembled, the device is hoisted to the corresponding position, secondary high-altitude formwork erecting is not needed, construction is flexible, the protective vertical rods are arranged at the positions of the side formworks, and the risk of high-altitude operation can be greatly reduced; according to the method, the requirement for a construction site is low, no full framing exists, the safety risk caused by high-altitude operation is greatly reduced, cost is saved, and the cast-in-place cantilever wing plate formwork erecting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of formwork installation and construction, in particular to a formwork-free device for cast-in-place cantilevered floor slabs of assembled building side beams. Background Art

[0002] When constructing cast-in-place cantilever slabs, the conventional practice is to use conventional formwork frames to support the formwork for pouring concrete. This practice often requires setting up aluminum operating frames or using aerial platforms to set up corresponding working surfaces to ensure that workers have operating space. Although this practice is effective, the construction of aluminum operating frames is laborious and troublesome, the use of aerial platforms is limited by the design load of the slab, and there are disadvantages such as the risk of large-scale high-altitude operations, which will greatly reduce the efficiency of formwork support for cast-in-place cantilever slabs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a formwork-free device for cast-in-place cantilevered floor slabs of prefabricated building side beams, which solves the problems of laborious and troublesome disassembly of setting up aluminum operating frames, the use of aerial platforms being limited by the design load of floor slabs, and the risk of large-area high-altitude operations, which will greatly reduce the efficiency of formwork for cast-in-place cantilevered floor slabs.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions: a formwork-free device for cast-in-place cantilevered floor slabs of prefabricated building side beams, including steel columns, a total of a plurality of steel columns are arranged in an array, and a plurality of precast concrete beams are connected to each other between the steel columns; a plurality of support frame mechanisms are arranged on the outer sides of the precast concrete beams on both sides, a side form is arranged on one side of the upper surface of the support frame mechanism, and a protective net mechanism is arranged on the upper end of the support frame mechanism, the support frame mechanism includes a support frame, a fixing plate, a second fixing bolt, a third fixing bolt, a support bracket, a fixing column and a first connecting plate, one side of the support frame is arranged on one side of the precast concrete beam, a fixing plate is arranged on both sides of the support frame, a plurality of second fixing bolts are arranged on one side of the fixing plate, one end of the second fixing bolt passes through the fixing plate and is threadedly connected to one side of the precast concrete beam, a support bracket is arranged on one side of the support frame, a plurality of third fixing bolts are arranged on both upper and lower sides of the support bracket, and the third fixing bolts are threadedly connected to one side of the support frame, a fixing column is fixedly connected to one side of the upper surface of the support frame, and a first connecting plate is fixedly connected to the upper end of the fixing column.

[0005] Preferably, a concrete floor is fixedly connected between the precast concrete beams.

[0006] Preferably, the supporting frame is L40*40*4 angle steel.

[0007] Preferably, the second fixing bolt is an 8*10 expansion screw.

[0008] Preferably, the side mold is a 2 mm thick galvanized iron sheet, and the side mold is fixedly connected to the supporting frame by C8 hexagonal bolts.

[0009] Preferably, a plurality of limit grooves are fixedly connected on both adjacent sides of the steel columns, and both ends of the precast concrete beam are respectively slidably connected to the inner sides of adjacent limit grooves, and a plurality of first fixing bolts are arranged on both sides of the limit grooves, and one end of each of the first fixing bolts passes through the limit grooves and is threadedly connected to one end of the precast concrete beam.

[0010] Preferably, the protective net mechanism includes a protective net body, a protective net support rod, a second connecting plate and a fourth fixing bolt. The protective net body is provided with several protective net support rods which are hinged to each other. The lower end array of the protective net body is fixedly connected with several protective net support rods.

[0011] Preferably, each of the second connecting plates is arranged corresponding to each of the first connecting plates.

[0012] Preferably, a plurality of fourth fixing bolts are passed through and connected around the upper end of the second connecting plate, and the lower ends of the fourth fixing bolts pass through the adjacent first connecting plate and are threadedly connected to the first connecting plate.

[0013] Beneficial Effects

[0014] The utility model provides a formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings. Compared with the prior art, it has the following beneficial effects:

[0015] 1. In the utility model, through the support frame mechanism, the triangular frame side formwork provided therein can replace the traditional formwork frame; after the device is assembled with the prefabricated beam on the ground, it is hoisted to the corresponding position, without the need for secondary high-altitude formwork, and the construction is flexible. In addition, protective vertical poles are provided at the side formwork position, which can greatly reduce the risk of high-altitude operations; the present invention has low requirements on the construction site and has no full-frame, which greatly reduces the safety risks brought by high-altitude operations, saves costs and improves the efficiency of formwork for cast-in-place cantilever wing panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a formwork-free device for cast-in-place cantilevered floor slabs on the side beams of assembled buildings proposed by the utility model;

[0017] Figure 2 A three-dimensional diagram of the steel column connection of a formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings proposed by the utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the assembly of a protective net mechanism for a cast-in-place cantilevered floor slab formwork-free device for an assembled building side beam proposed by the utility model;

[0019] Figure 4 This is a three-dimensional diagram of a support skeleton mechanism for a formwork-free device for cast-in-place cantilevered floor slabs of prefabricated building side beams proposed by the utility model.

[0020] Legend:

[0021] 1. Steel column; 2. Precast concrete beam; 3. Side formwork; 4. Concrete floor; 5. Limiting groove; 6. First fixing bolt; 7. Support frame mechanism; 701. Support frame; 702. Fixing plate; 703. Second fixing bolt; 704. Third fixing bolt; 705. Support bracket; 706. Fixing column; 707. First connecting plate; 8. Protection net mechanism; 801. Protection net body; 802. Protection net support rod; 803. Second connecting plate; 804. Fourth fixing bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 The utility model provides two technical solutions, which specifically include the following embodiments:

[0024] Embodiment 1:

[0025] A formwork-free device for cast-in-place cantilevered floor slabs of prefabricated building side beams, comprising steel columns 1, a plurality of steel columns 1 are provided in an array, a plurality of precast concrete beams 2 are connected to each other between the steel columns 1; a plurality of support frame mechanisms 7 are provided on the outer sides of the precast concrete beams 2 on both sides, a side form 3 is provided on one side of the upper surface of the support frame mechanism 7, a protective net mechanism 8 is provided on the upper end of the support frame mechanism 7, the support frame mechanism 7 comprises a support frame 701, a fixing plate 702, a second fixing bolt 703, a third fixing bolt 704, a support bracket 705, a fixing column 706 and a first connecting plate 707, one side of the support frame 701 is provided on one side of the precast concrete beam 2, a fixing plate 702 is provided on both sides of the support frame 701, a plurality of second fixing bolts 703 are provided on one side of the fixing plate 702, and a plurality of second fixing bolts 703 are provided on one side of the second fixing bolts 703. The end passes through the fixed plate 702 and is threadedly connected to one side of the precast concrete beam 2, a supporting bracket 705 is arranged on one side of the supporting frame 701, and a plurality of third fixing bolts 704 are arranged on the upper and lower sides of the supporting bracket 705 and are threadedly connected to one side of the supporting frame 701 through the third fixing bolts 704, a fixing column 706 is fixedly connected to one side of the upper surface of the supporting frame 701, and a first connecting plate 707 is fixedly connected to the upper end of the fixing column 706, and a concrete floor 4 is fixedly connected between the precast concrete beams 2, the supporting frame 701 is L40*40*4 angle steel, the second fixing bolt 703 is 8*10 expansion screw, the side mold 3 is 2mm thick galvanized iron sheet, and the side mold 3 is fixedly connected to the supporting frame 701 through C8 hexagonal bolts, the side mold 3 is 2mm thick galvanized iron sheet, and the side mold 3 is fixedly connected to the supporting frame 701 through C8 hexagonal bolts.

[0026] When in use, the support frames 701 are first placed in an array on one side of the precast concrete beam 2, and then the support frames 701 are fixed to one side of the precast concrete beam 2 by the second fixing bolts 703. Subsequently, the support brackets 705 are fixed to one side of the support frames 701 by the third fixing bolts 704 to provide support for the support frames 701 and prevent the protective net mechanism 8 from bending the support frames 701 for a long time.

[0027] Embodiment 2:

[0028] On the basis of the first embodiment, the protective net mechanism 8 includes a protective net body 801, a protective net support rod 802, a second connecting plate 803 and a fourth fixing bolt 804. The protective net body 801 is provided with a plurality of protective net support rods 802 which are hinged to each other. The lower end of the protective net body 801 is fixedly connected with a plurality of protective net support rods 802 in an array. Each second connecting plate 803 is arranged corresponding to each first connecting plate 707. A plurality of fourth fixing bolts 804 are penetrated and connected around the upper end of the second connecting plate 803. The lower end of the fourth fixing bolt 804 penetrates the adjacent first connecting plate 707 and is threadedly connected to the first connecting plate 707. A plurality of limiting grooves 5 are fixedly connected to the adjacent two sides of the steel column 1. The two ends of the precast concrete beam 2 are respectively slidably connected to the inner sides of the adjacent limiting grooves 5. A plurality of first fixing bolts 6 are provided on both sides of the limiting groove 5. One end of the first fixing bolt 6 penetrates the limiting groove 5 and is threadedly connected to one end of the precast concrete beam 2.

[0029] Place the protective net support rod 802 and the fixed column 706 one by one, and then fix the first connecting plate 707 and the second connecting plate 803 one by one through the fourth fixing bolt 804, and then slide the two ends of the precast concrete beam 2 into the adjacent limit groove 5 respectively, and then fix the limit groove 5 and the precast concrete beam 2 to each other through the first fixing bolt 6.

[0030] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. A formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings, comprising a steel column (1), characterized in that: A total of a plurality of the steel columns (1) are provided and arranged in an array, and a plurality of precast concrete beams (2) are connected to each other between the steel columns (1); a plurality of support frame mechanisms (7) are provided on the outer sides of the precast concrete beams (2) on both sides; a side mold (3) is provided on one side of the upper surface of the support frame mechanism (7); a protective net mechanism (8) is provided on the upper end of the support frame mechanism (7); the support frame mechanism (7) comprises a support frame (701), a fixing plate (702), a second fixing bolt (703), a third fixing bolt (704), a support bracket (705), a fixing column (706) and a first connecting plate (707); one side of the support frame (701) is provided on one side of the precast concrete beam (2); A fixing plate (702) is provided on both sides of the support frame (701), a plurality of second fixing bolts (703) are provided on one side of the fixing plate (702), one end of the second fixing bolt (703) passes through the fixing plate (702) and is threadedly connected to one side of the precast concrete beam (2), a support bracket (705) is provided on one side of the support frame (701), a plurality of third fixing bolts (704) are provided on both upper and lower sides of the support bracket (705) and are threadedly connected to one side of the support frame (701) via the third fixing bolts (704), a fixing column (706) is fixedly connected to one side of the upper surface of the support frame (701), and a first connecting plate (707) is fixedly connected to the upper end of the fixing column (706).

2. A formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 1, characterized in that: A concrete floor (4) is fixedly connected between the precast concrete beams (2).

3. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 1, characterized in that: The supporting frame (701) is L40*40*4 angle steel.

4. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 1, characterized in that: The second fixing bolt (703) is an 8*10 expansion screw.

5. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 1, characterized in that: The side mold (3) is a 2 mm thick galvanized iron sheet, and the side mold (3) is fixedly connected to the supporting frame (701) via C8 hexagonal bolts.

6. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 1, characterized in that: A plurality of limiting grooves (5) are fixedly connected on both adjacent sides of the steel columns (1); both ends of the precast concrete beam (2) are respectively slidably connected to the inner sides of adjacent limiting grooves (5); a plurality of first fixing bolts (6) are arranged on both sides of the limiting grooves (5); one end of each of the first fixing bolts (6) passes through the limiting grooves (5) and is threadedly connected to one end of the precast concrete beam (2).

7. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 1, characterized in that: The protective net mechanism (8) comprises a protective net body (801), a protective net support rod (802), a second connecting plate (803) and a fourth fixing bolt (804); the protective net body (801) is provided with a plurality of protective net support rods (802) which are hinged to each other; and the lower end of the protective net body (801) is fixedly connected to the plurality of protective net support rods (802) in an array.

8. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 7, characterized in that: The lower end of each of the protection net support rods (802) is fixedly connected to a second connecting plate (803).

9. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 8, characterized in that: Each of the second connecting plates (803) and each of the first connecting plates (707) are arranged corresponding to each other.

10. The formwork-free device for cast-in-place cantilevered floor slabs of prefabricated buildings according to claim 8, characterized in that: A plurality of fourth fixing bolts (804) are connected and penetrated around the upper end of the second connecting plate (803), and the lower ends of the fourth fixing bolts (804) penetrate the adjacent first connecting plate (707) and are threadedly connected to the first connecting plate (707).

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