A beam-column joint concrete casting isolation device with different strength grades

Abstract

The invention discloses a concrete casting and forming isolation device of different strength grades at beam-column joints, comprising a plurality of long strip isolation steel plates, a plurality of long strip dense steel wire brushes, a circular support rod and two gear sleeves; each long strip dense steel wire brush is fixed on the front end surface of the long strip isolation steel plate; a circular support rod through hole is opened at the upper end of each long strip isolation steel plate, and the brush is passed through the circular support rod through the through hole, and the brush can rotate and slide along the circular support rod, but is relatively tightly assembled; the two ends of the circular support rod are respectively fixed in the two gear sleeves; when in use, after the long strip isolation steel plate is positioned, each long strip dense steel wire brush is overlapped together, and the steel wire brush fills the concrete casting interface of different strength grades. The invention is easy to install and disassemble, can be recycled and reused, reduces costs, has a fast construction speed, improves project progress, and can effectively control the flow of concrete of different strength grades.

Description

Technical Field

[0001] The invention relates to a beam-column node construction device, in particular to an isolating device for casting and molding concrete of different strength grades at a beam-column node. Background Art

[0002] As land resources become increasingly scarce, high-rise buildings are increasing. In the main structure of a house, walls, columns, beams, and slabs are the main force-transmitting components. In order to ensure the force transmission effect and safety of the force-transmitting components, designers generally require the use of higher-strength concrete at the beam-column joints to meet the design concept of strong columns and weak beams. During the construction of concrete of different strength grades at the existing beam-column joints, the core node area and the surrounding areas cannot be poured at the same time, and separation measures are required. In most cases, a wire mesh is used to separate the high and low-grade concrete at the interface of beams and columns. This wire mesh is placed inside at one time and does not need to be taken out. The high-strength concrete is poured first. Before the high-strength concrete begins to set, the low-strength concrete must be poured. The high-strength concrete is vibrated first, and then the low-strength concrete is vibrated. This method has great defects. During the construction process, the construction workers use their hands to insert and fix the wire mesh in the middle of the steel mesh. Due to frequent contact with the tying wire, their hands are easily injured; the wire mesh cannot be recycled and reused, which wastes materials; and the wire mesh has poor supporting strength. Usually, short steel bars are used to reinforce the back surface of the wire mesh. The steel bars penetrate the wire mesh, making the wire mesh structure unstable and easy to break, causing high-strength concrete to flow into low-strength concrete, causing economic losses; the construction is inconvenient, the construction speed is too slow, and the labor operation efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and to provide an isolation device for casting and forming concrete of different strength grades at beam-column nodes, which is easy to install and disassemble, can be recycled and reused, reduces costs, has a fast construction speed, improves project progress, and can effectively control the flow of concrete of different strength grades.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a concrete casting and forming isolation device with different strength grades at a beam-column joint, comprising a plurality of long strip isolation steel plates, a plurality of long strip dense steel wire brushes, a circular support rod and two gear sleeves; each long strip dense steel wire brush is fixed on the front end surface of the long strip isolation steel plate; a circular support rod through hole is opened at the upper end of each long strip isolation steel plate, and it is passed through the circular support rod through the through hole, and it can be rotatable and slid along the circular support rod, but is relatively tightly assembled; the two ends of the circular support rod are respectively fixed in the two gear sleeves; when in use, after the long strip isolation steel plate is positioned, the long strip dense steel wire brushes are overlapped together, and the steel wire brushes fill the concrete casting interface with different strength grades. When in use, insert the side of the isolation steel plate with a long strip of dense steel wire brush at a 45° angle into the concrete pouring interface of different strength grades in the beam, place two stop sleeves on the steel bars of the steel mesh, insert and limit the isolation steel plate between the adjacent steel bars of the steel mesh, and determine the number of isolation steel plates and the spacing between adjacent isolation steel plates according to the setting requirements of the steel mesh steel bars. After pouring, when the concrete is initially set, the isolation device can be pulled out.

[0005] Further preferably, the strip-shaped isolation steel plate is a right-angled triangular steel plate, the circular support rod through hole is opened at one end close to the short right-angled side of the right-angled triangular steel plate, and the strip-shaped dense steel wire brush is fixed on the hypotenuse of the right-angled triangular steel plate. The right-angled triangular steel plate saves materials and reduces costs.

[0006] Further preferably, the elongated dense steel wire brush comprises an elongated support shaft and a steel wire brush densely fixed on the elongated support shaft in a fan-shaped form larger than a semicircle; the elongated support shaft is a metal support tube or a thick steel wire or a plurality of thick steel wires hinged and wound together. The structure is simple, the effect of blocking the flow of concrete is good, and it is easy to clean.

[0007] Preferably, the middle of the circular support rod is a smooth axis, and both ends are threaded shafts; the inner wall of the shift sleeve has an internal thread matching the thread of the threaded shaft; the shift sleeve is threadedly connected to both ends of the circular support rod. Disassembly is convenient, and the number of long strip isolation steel plates between the two shift sleeves can be increased or decreased.

[0008] Further preferably, the strip-shaped isolation steel plate has a plurality of fixing holes at intervals on one side for fixing the strip-shaped dense steel wire brush; the strip-shaped dense steel wire brush is fixed to the strip-shaped isolation steel plate by binding steel wires through the fixing holes. The fixing method is simple, and the strip-shaped dense steel wire brush is easy to replace, thereby extending its service life.

[0009] The present invention does not require manual binding and fixing, is easy to install and disassemble, has a fast construction speed and high efficiency, and improves the progress of the project; it can be recycled and reused, and reduces the construction cost; the wire bristles of each long strip dense wire brush fill the concrete pouring interface of different strength grades, block the gaps between the beam reinforcement bars, and can effectively control the flow of concrete of different strength grades, effectively solving the problem of mixed flow of concrete of different strength grades, fully meeting the design requirements of strong columns and weak beams, and reducing the economic loss caused by the high-strength concrete flowing to the low-strength concrete pouring position. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the present invention;

[0011] Figure 2 It is a left side view of the present invention;

[0012] Figure 3 A top view of the present invention;

[0013] Figure 4 The schematic diagram shows the position of the present invention installed at the beam-column node. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings:

[0015] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this embodiment includes a plurality of long strip isolation steel plates 3, a plurality of long strip dense steel wire brushes 4, a circular support rod 1 and two shift sleeves 2. Each long strip dense steel wire brush 4 is fixed on the front end surface of the long strip isolation steel plate 3. Preferably, the long strip isolation steel plate 3 has a plurality of fixing holes 5 at intervals on one side for fixing the long strip dense steel wire brush 4; the long strip dense steel wire brush 4 is fixed to the long strip isolation steel plate 3 by binding with steel wire 6 through each fixing hole 5. Preferably, the long strip dense steel wire brush 4 includes a long strip support shaft 41 and a steel wire brush 42 densely fixed on the long strip support shaft 41 in a fan-shaped form larger than a semicircle; the long strip support shaft 41 is a metal support tube or a thick steel wire or a plurality of thick steel wires hinged and wound together. Each long strip isolation steel plate 3 has a circular support rod through hole at the upper end, which is passed through the circular support rod 1 through the through hole, and can be rotated and slid along the circular support rod 1, but is relatively tightly assembled. Preferably, the long strip isolation steel plate 3 is a right-angled triangular steel plate, the circular support rod 1 through hole is opened at one end close to the short right-angled side of the right-angled triangular steel plate, and the long strip dense steel wire brush 4 is fixed on the hypotenuse of the right-angled triangular steel plate. The two ends of the circular support rod 1 are respectively fixed in two gear sleeves. Preferably, the middle of the circular support rod 1 is an optical axis and the two ends are threaded shafts; the inner wall of the gear sleeve 2 has an internal thread matching the thread of the threaded shaft; the gear sleeve 2 is threadedly connected to the two ends of the circular support rod 1. It is easy to disassemble and convenient to increase or decrease the number of long strip isolation steel plates between the two gear sleeves. When in use, after the long strip isolation steel plate 3 is positioned, each long strip dense steel wire brush 4 is overlapped together, and the wire brush 42 fills the concrete pouring interface of different strength grades. When in use, insert the side of the isolation steel plate 3 with the long strip dense steel wire brush 4 at an angle of 135° into the concrete pouring interface 8 of different strength grades in the beam 7, place two stop sleeves 2 on the steel bars of the steel mesh, insert and limit the isolation steel plate 3 between the adjacent steel bars of the steel mesh, and determine the number of isolation steel plates 3 and the spacing between adjacent isolation steel plates 3 according to the setting requirements of the steel mesh steel bars. After pouring, when the concrete is initially set, the isolation device can be pulled out. 9 is a column.

[0016] This embodiment is only an illustration of the concept and implementation of the present invention, and does not limit it. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A beam-column joint concrete casting and forming isolation device with different strength grades, characterized by: It includes a plurality of long strip isolation steel plates, a plurality of long strip dense steel wire brushes, a circular support rod and two gear sleeves; each long strip dense steel wire brush is fixed on the front end surface of the long strip isolation steel plate; a circular support rod through hole is opened at the upper end of each long strip isolation steel plate, and the brush is passed through the circular support rod through the circular support rod through the circular support rod through the circular support rod through the circular support rod, and can be rotated and slid along the circular support rod, but is relatively tightly assembled; the two ends of the circular support rod are respectively fixed in the two gear sleeves; when in use, after the long strip isolation steel plate is positioned, each long strip dense steel wire brush is overlapped together, and the steel wire brush fills the concrete pouring interface of different strength grades; The long strip isolation steel plate is a right-angled triangular steel plate, the circular support rod through hole is opened at one end close to the short right-angled side of the right-angled triangular steel plate, and the long strip dense steel wire brush is fixed on the hypotenuse of the right-angled triangular steel plate; The long strip dense steel wire brush comprises a long strip support shaft and a steel wire brush which is densely fixed on the long strip support shaft in a fan-shaped form larger than a semicircle; the long strip support shaft is a metal support tube or a thick steel wire or a plurality of thick steel wires which are hinged and wound together; The middle of the circular support rod is a smooth axis, and both ends are threaded shafts; the inner wall of the shift sleeve is provided with internal threads matching the threads of the threaded shaft; the shift sleeve is threadedly connected to both ends of the circular support rod.

2. The beam-column joint concrete casting and molding isolation device of different strength grades according to claim 1 is characterized in that: The long strip isolation steel plate has a plurality of fixing holes at intervals on one side for fixing the long strip dense steel wire brush; the long strip dense steel wire brush is fixed on the long strip isolation steel plate by binding with steel wires through the fixing holes.

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