Internal support for controlling the thickness of the reinforcement cover of a shaped member and manufacturing tooling

Abstract

The utility model discloses an inner support and manufacturing tool for controlling the thickness of the reinforcing layer of a shaped component steel bar, the inner support is dumbbell-shaped as a whole and is supported between two layers of adjacent shaped component steel bars, which comprises a steel bar excess material and two concrete blocks, the two concrete blocks are symmetrically arranged at the two ends of the steel bar excess material, the two side end faces of the inner support are respectively arc curved surfaces, and the arc curved surfaces are adapted to the outer walls of the shaped component steel bars. The utility model effectively utilizes the excess concrete and steel bar excess material, has simple structure, is convenient to manufacture and low in cost, effectively improves the qualified rate of the reinforcing layer thickness of the shaped component steel bar and realizes stable operation.

Description

Technical Field

[0001] This utility model relates to the technical field of building construction, and in particular to an internal support component and manufacturing tooling for controlling the thickness of the protective layer of steel bars in a shaped component. Background Technology

[0002] In concrete structures, reinforced concrete is a composite material composed of two different materials: steel reinforcement and concrete. Good bonding properties between these two materials are fundamental to their effective work together. Requirements for the concrete cover from the perspective of steel reinforcement bond anchorage are designed to ensure that the steel reinforcement and the surrounding concrete work together and that the steel reinforcement fully utilizes its calculated strength. National standards vary the required thickness of the steel cover for different environmental categories and design service lives. The thickness of the cover is a crucial factor in the acceptance of reinforced concrete projects. Insufficient cover thickness affects the durability of the structure; excessive cover thickness improves the bond anchorage performance, durability, and fire resistance of the load-bearing steel reinforcement, but it can also lead to excessively wide cracks under stress, thus affecting the structure's serviceability.

[0003] To better control the concrete cover of reinforcing bars, stirrups are typically used, but their fabrication process is complex and costly. Furthermore, during concrete pouring, excess concrete is often produced to prevent insufficient concrete volume for construction. Therefore, designing a simple, easy-to-fabricate, and low-cost support structure for controlling the thickness of the concrete cover using surplus concrete and leftover reinforcing bars is a current technical challenge. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an internal support component and manufacturing tooling for controlling the thickness of the steel reinforcement protective layer of the formed component. It effectively utilizes excess concrete and steel reinforcement material, has a simple structure, is easy to manufacture, and has low cost. It effectively improves the qualified rate of the steel reinforcement protective layer thickness of the formed component and achieves stable operation.

[0005] The objective of this utility model can be achieved by adopting the following technical solutions:

[0006] An inner support for controlling the thickness of the protective layer of reinforcing bars in a forming component is disclosed. The inner support is dumbbell-shaped and is supported between two adjacent layers of reinforcing bars in the forming component. It includes residual reinforcing bars and two concrete blocks, which are symmetrically arranged at both ends of the residual reinforcing bars. The two end faces of the inner support are arc-shaped curved surfaces that are adapted to the outer wall of the reinforcing bars in the forming component.

[0007] A tooling for manufacturing an inner support for controlling the thickness of the protective layer of reinforcing bars in a molded component includes a fixed shell and a movable shell. Both the fixed shell and the movable shell are hollow shells without top covers. The fixed shell and the movable shell are arranged symmetrically from left to right and maintain a preset distance between them. The two opposing end faces of the fixed shell and the movable shell are each composed of a lower fixed plate and an upper movable plate connected together. The lower fixed plate and the upper movable plate are detachably connected, and each of the lower fixed plate and the upper movable plate is provided with two semi-circular reserved holes. The two semi-circular reserved holes are connected together to form an installation hole for inserting residual reinforcing bars. The two opposing end faces of the fixed shell and the movable shell are arc-shaped curved surfaces that can be adapted to the outer wall of the reinforcing bars in the molded component. The two ends of the residual reinforcing bars are inserted into the fixed shell and the movable shell respectively through the installation holes. The molded inner support is obtained by pouring residual concrete into the fixed shell and the movable shell.

[0008] Furthermore, it also includes a fixing rod, the surface of which is provided with scale lines for measuring the distance between the fixed housing and the movable housing. One end of the fixed housing is aligned with and connected to the 0 scale line of the fixing rod, and then the movable housing is aligned with and connected to the corresponding scale line according to the size of the inner support member.

[0009] Furthermore, the fixing rod is a square tube, flat iron, or steel pipe.

[0010] Furthermore, a connecting rod for connecting the fixing rod is provided at one end of the fixed housing near the movable housing, and the connecting rod is connected to the fixing rod by a tie wire.

[0011] Furthermore, the movable housing is provided with connecting rods at its left and right ends for connecting to the fixing rods, and the connecting rods are connected to the fixing rods by tie wires.

[0012] Furthermore, the diameter of the mounting hole is determined based on the diameter of the remaining reinforcing bar material.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. The internal support component of this utility model has a simple structure, is easy to manufacture, and has low cost. It can be made from steel bar scraps and concrete scraps, realizing the utilization of waste materials and facilitating green construction.

[0015] 2. The internal support component of this utility model can be prefabricated to meet the construction schedule requirements.

[0016] 3. The end face of the inner support component of this utility model adopts an arc-shaped curved surface design, which fits the curved surface of the steel bar better and is conducive to the tightness of the support. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the internal support component of this utility model.

[0018] Figure 2 This is a schematic diagram of the manufacturing fixture for the inner support component of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal support component manufactured using the tooling of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0021] Example 1:

[0022] like Figure 1 As shown, this embodiment provides an inner support for controlling the thickness of the protective layer of the reinforcing steel in a molded component. The inner support is dumbbell-shaped and is supported between two adjacent layers of reinforcing steel in the molded component. It includes leftover reinforcing steel 101 and two concrete blocks 102. The two concrete blocks are symmetrically arranged at both ends of the leftover reinforcing steel. The two end faces of the inner support are respectively arc-shaped curved surfaces 103. The arc-shaped curved surfaces are adapted to the outer wall of the reinforcing steel in the molded component. Both the leftover reinforcing steel and the concrete blocks can be made from leftover material. At the same time, the leftover concrete must be greater than or equal to the concrete grade of the component.

[0023] Example 2:

[0024] like Figure 2As shown, this embodiment provides a manufacturing fixture for an inner support member used to control the thickness of the concrete cover of reinforcing bars in a formed component. The fixture includes a fixed shell 2 and a movable shell 3. Both the fixed shell 2 and the movable shell 3 are hollow shells without top covers. The fixed shell 2 and the movable shell 3 are arranged symmetrically from left to right, maintaining a preset distance between them. The two opposing end faces of the fixed shell 2 and the movable shell 3 are each formed by a lower fixed plate 201 and an upper movable plate 202 joined together. The lower fixed plate 201 and the upper movable plate 202 are detachably connected. 01 and the upper movable plate 202 are respectively provided with two semi-circular reserved holes. The two semi-circular reserved holes are joined together to form an installation hole 203 for inserting the steel reinforcement 101. The two opposite end faces of the fixed shell 2 and the movable shell 3 are respectively arc-shaped curved surfaces 204, which can be adapted to the outer wall of the steel reinforcement of the formed component. The two ends of the steel reinforcement 101 are inserted into the interior of the fixed shell 2 and the movable shell 3 through the installation hole 203 respectively. The formed inner support component is obtained by pouring concrete residue into the interior of the fixed shell 2 and the movable shell 3.

[0025] Specifically, it also includes a fixing rod 4, the surface of which is provided with scale lines for measuring the distance between the fixed housing 2 and the movable housing 3. One end of the fixed housing 2 is aligned with and connected to the 0 scale line of the fixing rod 4, and then the movable housing 3 is aligned with and connected to the corresponding scale line according to the size of the inner support member.

[0026] The aforementioned fixing rod 4 is a square tube, flat iron, or steel pipe.

[0027] A connecting rod 5 for connecting a fixing rod 4 is provided at one end of the fixed housing 2 near the movable housing 3. The connecting rod 5 is connected to the fixing rod 4 by a tie wire. Connecting rods 6 for connecting the fixing rod 4 are provided at both ends of the movable housing 3. The connecting rods 6 are connected to the fixing rod 4 by tie wires.

[0028] The diameter of the mounting hole 203 is determined based on the diameter of the remaining steel bar.

[0029] The specific process for fabricating the internal support component using tooling is as follows:

[0030] In the construction rebar handling room, it is necessary to determine which type of rebar has the most surplus material. Based on the type of surplus material, semi-circular pre-drilled holes of corresponding diameter are made on the lower fixed plate 201 and the upper movable plate 202 (holes can also be made for other types of surplus material later). The two semi-circular pre-drilled holes are joined together to form an installation hole 203 for inserting the surplus rebar. One end of the fixed housing 2 is aligned with the 0 mark of the fixed rod 4 and spot-welded. According to the required internal support size, the movable housing 3 is aligned with the corresponding mark and connected (the fixed rod and connecting rod can be tied with wire to facilitate installation and demolding). The two upper movable plates 202 of the fixed housing 2 and the movable housing 3 are removed, and the two ends of the surplus rebar are placed inside the fixed housing 2 and the movable housing 3 respectively. Figure 3 As shown, the two upper movable plates 202 are then installed and fixed. After the concrete residue is poured into the fixed shell 2 and the movable shell 3, the concrete is cured and the demolding conditions are met. The binding wires are then removed, and the two upper movable plates 202 are disassembled to demold the inner support component.

[0031] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. An internal support member for controlling the thickness of the concrete cover for reinforcing bars in a formed component, characterized in that: The inner support member is dumbbell-shaped and is supported between two adjacent layers of reinforcing bars of the forming component. It includes the remaining reinforcing bars and two concrete blocks. The two concrete blocks are symmetrically arranged at both ends of the remaining reinforcing bars. The two end faces of the inner support member are arc-shaped curved surfaces, which are adapted to the outer wall of the reinforcing bars of the forming component.

2. A fabrication fixture for an inner support member used to control the thickness of the reinforcing bar protective layer in a formed component, as described in claim 1, characterized in that: The device includes a fixed shell and a movable shell, both of which are hollow shells without top covers. The fixed shell and the movable shell are arranged symmetrically from left to right and maintain a preset distance between them. The two opposing end faces of the fixed shell and the movable shell are each composed of a lower fixed plate and an upper movable plate connected together. The lower fixed plate and the upper movable plate are detachably connected, and each of the lower fixed plate and the upper movable plate is provided with two semi-circular reserved holes. The two semi-circular reserved holes are connected to form an installation hole for inserting the steel reinforcement. The two opposing end faces of the fixed shell and the movable shell are arc-shaped curved surfaces that can be adapted to the outer wall of the steel reinforcement of the formed component. The two ends of the steel reinforcement are inserted into the fixed shell and the movable shell respectively through the installation holes. The formed internal support component is obtained by pouring concrete into the fixed shell and the movable shell.

3. The tooling for manufacturing the inner support member for controlling the thickness of the protective layer of reinforcing bars in a formed component according to claim 2, characterized in that: It also includes a fixing rod, the surface of which is provided with scale lines for measuring the distance between the fixed housing and the movable housing. One end of the fixed housing is aligned with and connected to the 0 scale line of the fixing rod, and then the movable housing is aligned with and connected to the corresponding scale line according to the size of the inner support member.

4. The tooling for manufacturing the inner support member for controlling the thickness of the reinforcing steel protective layer of the formed component according to claim 3, characterized in that: The fixing rod is a square tube, flat iron, or steel pipe.

5. The tooling for manufacturing the inner support member for controlling the thickness of the protective layer of reinforcing bars in a formed component according to claim 2, characterized in that: The fixed housing is provided with a connecting rod for connecting the fixed rod at one end near the movable housing, and the connecting rod is connected to the fixed rod by a tie wire.

6. The tooling for manufacturing the inner support member for controlling the thickness of the reinforcing bar protective layer of the formed component according to claim 2, characterized in that: The movable housing is provided with connecting rods at its left and right ends for connecting to the fixing rods, and the connecting rods are connected to the fixing rods by tie wires.

7. The fabrication fixture for the inner support member used to control the thickness of the protective layer of reinforcing bars in a formed component according to claim 2, characterized in that: The diameter of the mounting hole is determined based on the diameter of the remaining reinforcing bar.

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