Slip form steel bar protective layer control device

Abstract

The invention relates to the technical field of slip form construction, in particular to a slip form steel bar protective layer control device which comprises an energy dissipation assembly, a welding rod and a control rod, the energy dissipation assembly comprises a roller, fixing bases and a spring, the spring is fixed between the two fixing bases, the roller is arranged on the spring in a sleeving mode, and each fixing base comprises a small-diameter end and a large-diameter end which are integrally formed; part of the small-diameter end is inserted into the roller, the diameter of the small-diameter end is smaller than the inner diameter of the roller, one end of the welding rod is fixed to the large-diameter end of one fixing base, the other end of the welding rod is fixed to the portal supporting leg, one end of the control rod is fixed to the large-diameter end of the other fixing base, and the other end of the control rod is inserted into the inner side of the steel formwork. The device has the technical effects that the thickness of a reinforcing steel bar protection layer can be guaranteed, and workers can drag reinforcing steel bars conveniently.

Description

Technical Field

[0001] This invention relates to the technical field of slipform construction, and in particular to a slipform reinforcement protective layer control device. Background Technology

[0002] Due to the unique properties of steel reinforcement, it is prone to oxidation when exposed to air and is highly susceptible to rust and corrosion. Therefore, there are specific requirements for the thickness of the concrete cover for the main structural reinforcement. The spacing, quantity, and lap length of the reinforcement bars directly affect the structural quality. Properly tied reinforcing bars and the thickness of the concrete cover are crucial for ensuring the structural lifespan, directly influencing structural quality and service life.

[0003] According to the construction drawings and relevant specifications, the thickness of the concrete cover for reinforcing bars must be checked on the ground in advance during slipform construction of silos, and this check must be carried out continuously on the operating platform during the slipforming process. The "Technical Standard for Slipform Engineering" directly stipulates that the thickness of the concrete cover for stressed reinforcing bars should be increased by 5mm compared with the conventional design, and the requirements for the concrete cover for reinforcing bars in slipform engineering are more stringent.

[0004] However, in on-site slipform construction, it is often difficult to guarantee the protective layer of the reinforcing bars. While special fixing clips can be used to ensure the thickness of the protective layer, the frictional resistance between the clips and the reinforcing bars can cause them to loosen or even fall off, resulting in a reduced protective layer that fails to meet specifications and thus affecting the overall quality of the reinforced concrete. Furthermore, before the reinforcing bars are tied, the steelworkers have to walk under the scaffolding, making it extremely inconvenient to drag the bars. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a slipform rebar protective layer control device that can ensure the thickness of the rebar protective layer and facilitate workers to drag the rebar.

[0006] The present invention provides a slipform rebar protective layer control device, which adopts the following technical solution: A slipform rebar protective layer control device includes an energy dissipation component, a welding rod, and a control rod. The energy dissipation component includes a roller, a fixed base, and a spring. The spring is fixed between two fixed bases, and the roller is sleeved on the spring. The fixed base includes an integrally formed small-diameter end and a large-diameter end. Part of the small-diameter end is inserted into the roller, and the diameter of the small-diameter end is smaller than the inner diameter of the roller. One end of the welding rod is fixed to the large-diameter end of one of the fixed bases, and the other end of the welding rod is fixed to a gantry support leg. One end of the control rod is fixed to the large-diameter end of the other fixed base, and the other end of the control rod is inserted into the inside of the steel formwork.

[0007] Optionally, the control rod includes a horizontal section and a vertical section. The horizontal section is connected to the fixed base, and the vertical section is inserted into the inside of the steel template. The vertical section is provided with steel lugs that fit tightly against the inner wall of the steel template.

[0008] Optionally, the steel lug is a connecting block welded and fixed to the vertical section. The side of the connecting block closest to the steel template is a flat surface, and the flat surface of the connecting block is in contact with the steel template.

[0009] Optionally, the steel formwork is made of reinforcing bars, with two reinforcing bars welded and fixed on both sides of the vertical section, and the reinforcing bars contacting the inner wall of the steel formwork.

[0010] Optionally, horizontal circumferential reinforcing bars to be tied can be placed on the roller.

[0011] Compared with the prior art, the present invention has the following technical effects: During the upward lifting of the steel formwork, the frictional resistance between the internal reinforcing bars and the protective layer device pulls on the protective layer device, causing it to loosen. This invention utilizes a spring to convert this frictional resistance into elastic potential energy. Through the stretching and deformation of the spring, the frictional resistance is dissipated, thereby reducing the frictional resistance transmitted from the control rod to the welding end, thus ensuring the stability of the connection between the welding rod and the steel formwork. The roller, fitted over the energy dissipation assembly, protects the internal springs while facilitating the horizontal circumferential movement of the reinforcing bars, thus aiding in the binding of the reinforcing bars. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal spring structure of the energy dissipation component in this invention; Figure 3 This is a schematic diagram of the vertical section and steel lug in the control rod of the present invention; Figure 4 This is a structural diagram of the state used in this invention.

[0013] Explanation of reference numerals in the attached drawings: 1. Energy dissipation component; 11. Roller; 12. Spring; 13. Fixed base; 2. Welding rod; 3. Control rod; 31. Steel lug; 4. Gantry support leg; 5. Horizontal circumferential reinforcement to be tied; 6. Horizontal circumferential reinforcement; 7. Vertical reinforcement; 8. Steel formwork. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 The present invention will be described in further detail below.

[0015] Reference Figures 1-4This invention discloses a control device for the protective layer of slipform rebar, including an energy dissipation component 1, a welding rod 2, and a control rod 3. The energy dissipation component 1 includes a roller 11, a fixed base 13, and a spring 12, with the spring 12 fixed between two fixed bases 13. Each fixed base 13 has an integrally formed small-diameter end and a large-diameter end. The roller 11 is sleeved around the spring 12, and a portion of the small-diameter ends of the two fixed bases 13 is inserted into the roller 11. The diameter of the small-diameter end of the fixed base 13 is smaller than the inner diameter of the roller 11, and the diameter of the large-diameter end is larger than the inner diameter of the roller 11. One end of the welding rod 2 is fixed to the large-diameter end of one of the fixed bases 13, and one end of the control rod 3 is fixed to the large-diameter end of the other fixed base 13. The control rod 3 and the welding rod 2 are made of ordinary steel, which can be sourced locally on the construction site, and the materials are widely available.

[0016] Welding rod 2 is a horizontal rod, and the end of welding rod 2 away from the fixed base 13 is welded and fixed to the gantry leg 4 used for sliding steel template 8. Control rod 3 is an L-shaped rod, which includes an integrally formed horizontal section and a vertical section. The horizontal section is welded and fixed to the fixed base 13, and the vertical section is inserted into the inside of the steel template 8.

[0017] When the steel formwork 8 moves upward, the welding rod 2, the energy dissipation component 1, and the control rod 3 move upward along with the steel formwork 8. Due to the friction between the control rod 3 and the horizontal circumferential reinforcement 6, the spring 12 is subjected to the pulling force of the control rod 3 and the welding rod 2. The spring 12 deforms inside the roller 11 due to the pulling force. Because of the action of the spring 12, the force exerted on the welding rod 2 by the control rod 3 due to friction is reduced, thereby making the connection between the welding rod 2 and the gantry support leg 4 more stable. The roller 11 is sleeved on the outside of the energy dissipation component 1, which protects the spring 12. The roller 11 can also roll on the fixed base 13, which makes it convenient to place the reinforcing bars on the roller 11 and pull and roll them when tying the horizontal circumferential reinforcement 6.

[0018] Multiple horizontal circumferential reinforcing bars 6 are tied to vertical reinforcing bars 7. The concrete cover for the reinforcing bars is the distance between the rightmost end of the horizontal circumferential reinforcing bar 6 and the steel formwork 8. The horizontal circumferential reinforcing bars 5 located above the roller 11 are to be tied.

[0019] Because the vertical section of the control rod 3 will rub against the tied horizontal circumferential reinforcement 6 during lifting, and the reinforcement surface is threaded, the vertical section will generate a torsional force under the action of the threads during lifting, thus the vertical section has a tendency to roll horizontally. In order to eliminate the torsional force when the vertical section is lifted, steel ears 31 are provided on the vertical section of the control rod 3. The steel ears 31 can be connecting blocks welded to the vertical section, with the side of the connecting block near the steel formwork plate being flat and in contact with the steel template 8. The steel ears 31 can also be steel bars, with the diameter of the steel bars being smaller than the diameter of the control rod 3. Two steel bars are welded to both sides of the vertical section, so that the steel bars are in close contact with the steel template 8, thereby ensuring the stability of the control rod 3 during lifting.

[0020] During the upward lifting of the steel formwork 8, the frictional resistance between the internal reinforcing bars and the protective layer device pulls on the protective layer device, causing it to loosen. This invention utilizes spring 12 to convert this frictional resistance into elastic potential energy. Through the stretching and deformation of spring 12, the frictional resistance is dissipated, thereby reducing the frictional resistance transmitted from the control rod 3 to the welding end, thus ensuring the stability of the connection between the welding rod 2 and the steel formwork 8. Roller 11 is fitted over the energy dissipation component 1, protecting the internal spring 12 while facilitating the rolling of the horizontal circumferential reinforcing bars 6 on roller 11, thus aiding in the binding of the reinforcing bars.

[0021] The present invention is provided with an energy dissipation component 1, which eliminates the tensile force on the overall device during the slipform process. At the same time, the steel lugs 31 of the control section constrain the horizontal displacement, and the roller 11 provides a protective effect while adding an auxiliary function.

[0022] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A slipform rebar protective layer control device, characterized in that: The device includes an energy dissipation component (1), a welding rod (2), and a control rod (3). The energy dissipation component (1) includes a roller (11), a fixed base (13), and a spring (12). The spring (12) is fixed between two fixed bases (13). The roller (11) is fitted onto the spring (12). The fixed base (13) includes an integrally formed small-diameter end and a large-diameter end. Part of the small-diameter end is inserted into the roller (11). The diameter of the small-diameter end is smaller than the inner diameter of the roller (11). One end of the welding rod (2) is fixed to the large-diameter end of one of the fixed bases (13). The other end of the welding rod (2) is fixed to the gantry leg (4). One end of the control rod (3) is fixed to the large-diameter end of the other fixed base (13). The other end of the control rod (3) is inserted into the inside of the steel template (8).

2. The slipform rebar protective layer control device according to claim 1, characterized in that: The control rod (3) includes a horizontal section and a vertical section. The horizontal section is connected to the fixed base (13), and the vertical section is inserted into the inside of the steel template (8). The vertical section is provided with steel ears (31) that are close to the inner wall of the steel template (8).

3. The slipform rebar protective layer control device according to claim 2, characterized in that: The steel lug (31) is a connecting block that is welded and fixed to the vertical section. The side of the connecting block that is close to the steel template (8) is a plane, and the plane of the connecting block is in contact with the steel template (8).

4. The slipform rebar protective layer control device according to claim 2, characterized in that: The steel formwork (8) is made of reinforcing bars. Two reinforcing bars are welded and fixed on both sides of the vertical section. The reinforcing bars are in contact with the inner wall of the steel formwork (8).

5. The slipform rebar protective layer control device according to claim 1, characterized in that: The horizontal circumferential reinforcing bars (5) to be tied can be placed on the roller (11).

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