Anti-rolling structure before steel bar enters straightening machine

Abstract

The invention discloses an anti-curl structure before a reinforcing steel bar enters a straightening machine, and relates to the technical field of constructional engineering, in particular to the anti-curl structure comprising a circular-truncated-cone-shaped cylinder and a supporting frame, the circular-truncated-cone-shaped cylinder is of a hollow structure, and the supporting frame is arranged on the ground in front of the straightening machine; the circular-truncated-cone-shaped barrel is horizontally arranged and fixed to the supporting frame, the small-opening end of the circular-truncated-cone-shaped barrel directly faces an inlet of the straightening machine, and the distance between the small-opening end of the circular-truncated-cone-shaped barrel and the inlet of the straightening machine is a set value. The invention provides the anti-rolling structure before the reinforcing steel bar enters the straightening machine, which is simple in structure and convenient to manufacture.

Description

Technical Field

[0001] This invention relates to the field of construction technology, specifically to an anti-rolling structure for steel bars before they enter a straightening machine. Background Technology

[0002] With the rapid development of cities, construction projects play a vital role in the urbanization process; however, foundation pit engineering is a crucial component of building construction. A significant amount of plain round steel bars are used in foundation pit support engineering, and these bars arrive at the construction site in coils. Before being used in the project, these coiled steel bars need to be straightened, and the straightening rate directly affects the progress of the project. Therefore, improving the straightening efficiency of steel bars is a key aspect of saving project costs.

[0003] There are currently published patents related to rebar straightening machines. For example, patent application number CN202122832990.3 C discloses a protective cage for the feed inlet of a rebar straightening machine. This invention provides a protective cage for the feed inlet of a rebar straightening machine, which includes a base box and a lifting mechanism. A lifting plate is located at the open end of the base box, and the lifting plate is connected to the base box via the lifting mechanism. A hollow cage body is located on the top surface of the lifting plate. The hollow cage body is a double-narrow-mouthed, vase-shaped, long cylindrical rebar cage, and a conical feed ring is located at the right end of the hollow cage body.

[0004] The invention patent application CN201520336099.2 discloses a safety protector for straightening reinforcing bars, comprising protective rings, protective rods, and fixed supports. The protector is generally funnel-shaped, with protective rods arranged laterally around the periphery of several protective rings, and fixed supports arranged vertically around the periphery of the small-end and end-end protective rings. This device has a simple structure and low cost, solving the safety protection problem for operators and the problem of reinforcing bars deviating from their intended direction when entering the straightening machine. The small-end protective ring is concentric with the reinforcing bar inlet of the straightening machine, and the concentric arrangement of the protective rings prevents them from swinging in the same direction due to eccentricity, thus avoiding damage to the protector.

[0005] It is evident that existing technologies are mainly complex in structure and have a narrow working surface; therefore, it is necessary to study a simple structure that is easy to manufacture to prevent the steel bars from rolling before they enter the straightening machine.

[0006] Invention content

[0007] Due to the aforementioned defects in the existing technology, the present invention provides an anti-rolling structure for steel bars before they enter the straightening machine.

[0008] Specifically, the present invention provides an anti-coiling structure for steel bars before they enter a straightening machine, which includes a frustum-shaped cylinder and a support frame;

[0009] The frustum-shaped cylinder has a hollow structure. The support frame is set on the ground in front of the straightening machine. The frustum-shaped cylinder is horizontally set and fixed on the support frame. The small end of the frustum-shaped cylinder is set directly opposite the inlet of the straightening machine, and the distance between the small end of the frustum-shaped cylinder and the inlet of the straightening machine is a set value.

[0010] In some embodiments, the frustum-shaped cylinder includes three steel rings arranged vertically at intervals, with the diameter of the middle steel ring being larger than the diameter of the steel ring near the inlet of the straightening machine and smaller than the diameter of the steel ring away from the inlet of the straightening machine. The centers of the three steel rings are on the same straight line, and the outer circumferences of the three steel rings are connected together by a plurality of waist ribs, which are evenly distributed on the outer circumference of the steel rings.

[0011] In some embodiments, the support frame includes three pairs of legs, each pair of legs including two legs arranged in a figure-eight shape, and the tops of the three pairs of legs are respectively connected to the two sides of the three steel rings.

[0012] In some of these embodiments, the support leg is a threaded steel bar.

[0013] In some embodiments, the bottom ends of the three legs located on both sides of the frustum-shaped cylinder are fixedly connected together by a stabilizing rib.

[0014] In some of these embodiments, the reinforcing bar ring is formed by bending threaded reinforcing bars, and the lap joint is double-sided welded.

[0015] In some of these embodiments, the set value is 0.8 to 1.2 m.

[0016] Compared with the prior art, the above-mentioned invention has the following advantages or beneficial effects:

[0017] (1) The present invention has a simple structure, a simple construction method, and a low project cost.

[0018] (2) This invention is convenient to use, efficient, safe and easy to operate.

[0019] (3) The structure of the present invention is easy for on-site workers to understand, easy to operate, and the quality is guaranteed. Attached Figure Description

[0020] The present invention, its features and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; the focus is on illustrating the gist of the invention.

[0021] Figure 1 This is a schematic diagram of the anti-coiling structure of the reinforcing bar before it enters the straightening machine in an embodiment of the present invention;

[0022] Among them, 1. support leg; 2. steel ring; 3. waist reinforcement; 4. stabilizing reinforcement. Detailed Implementation

[0023] The structure of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, but...

[0024] This is not intended to limit the scope of the invention.

[0025] like Figure 1 As shown, the present invention provides an anti-coiling structure for reinforcing bars before they enter a straightening machine, which is used to solve the problem that the speed at which coiled reinforcing bars enter the straightening machine is slowed down due to the reinforcing bars being easily coiled up before entering the straightening machine. Specifically, the frustum-shaped cylinder has a hollow structure, the support frame is set on the ground in front of the straightening machine, the frustum-shaped cylinder is horizontally set and fixed on the support frame, the small end of the frustum-shaped cylinder is set directly opposite the inlet of the straightening machine, and the distance between the small end of the frustum-shaped cylinder and the inlet of the straightening machine is a set value.

[0026] The aforementioned frustum-shaped cylinder includes three vertically arranged steel rings 2 spaced apart in sequence. The diameter of the middle steel ring 2 is larger than that of the steel ring 2 near the inlet of the straightening machine, but smaller than that of the steel ring 2 further away from the inlet of the straightening machine. The centers of the three steel rings 2 are on the same straight line. The outer circumferences of the three steel rings 2 are connected together by multiple web reinforcements 3, which are evenly distributed on the outer circumference of the steel rings 2. The support frame includes three pairs of legs 1, and each pair of legs 1 includes two legs 1 arranged in a V-shape. The tops of the three pairs of legs 1 are respectively connected to the two sides of the three steel rings 2. The legs 1 are threaded steel bars. The bottom ends of the three legs 1 located on both sides of the frustum-shaped cylinder are fixedly connected together by a horizontally arranged stabilizing rib 4 (that is, the bottom ends of the three legs 1 located on the left side of the frustum-shaped cylinder are connected together by a water-stabilizing rib 4, and the bottom ends of the three legs 1 located on the right side of the frustum-shaped cylinder are also connected together by a water-stabilizing rib 4); the steel ring 2 is formed by bending threaded steel bars, and the distance between the small end of the frustum-shaped cylinder and the inlet end of the straightening machine is 0.8 to 1.2 m.

[0027] In a specific embodiment of the present invention, three steel rings 2 are made by welding steel bars with a diameter of 16mm, and the overlap is double-sided welded. The diameters of the three steel rings 2 are 50cm, 80cm, and 100cm, respectively. Then, multiple 4m long steel bars with a diameter of 12mm are used as waist reinforcements 3 to connect the three steel rings 2 in series, with the smallest diameter at the front, arranged in ascending order (the smallest diameter part is the end of the steel bar near the inlet of the straightening machine, and the placement position is 1m away from the straightening machine inlet). The waist reinforcements 3 are set at the ends and middle of the waist reinforcements 3. The waist reinforcements 3 are connected to the steel rings 2 by welding. The waist reinforcements 3 are set on the outside of the three steel rings 2, in a ratio of 20cm:32. The reinforcing bars 3 are evenly spaced at 40cm intervals on the three steel rings 2 (this ratio is the ratio of the spacing between adjacent reinforcing bars 3 on the three rings); the reinforcing bars 3 are attached to the three steel rings 2 to connect them and ensure that the coiled steel bars do not fall apart before entering the straightening machine; each steel ring 2 is welded with two support legs 1, and the two support legs 1 are fixed at both ends of the diameter of each steel ring 2, ensuring that the centers of the three steel rings 2 are on the same horizontal line. The support legs 1 are made of ordinary threaded steel bars with a diameter of 22mm and a length of 1.5m; the stabilizing bars 4 are made of steel bars with a diameter of 22mm and a length of 4m. The stabilizing bars 4 connect the three support legs 1 in series to increase the stability of the structure.

[0028] In addition, the method for fabricating the anti-coiling structure before the steel bars enter the straightening machine includes the following steps:

[0029] Step S1: Cut steel bars with a diameter of 16mm into circular lengths of 50cm, 80cm, and 100cm, taking into account the overlap of double-sided welding; the cutting lengths are 165cm, 260cm, and 322cm respectively; then bend them into circles to form three steel bar rings with diameters of 50cm, 80cm, and 100cm respectively.

[0030] Step S2: Use 4m long, 12mm diameter steel bars as web reinforcement to connect three steel bar rings in series, with the smallest diameter bar in front, arranged in ascending order, and placed at the ends and middle of the web reinforcement. The web reinforcement is welded to the steel bar rings and placed on the outside of the steel bar rings, evenly distributed on the steel bar rings at a spacing of 20cm:32cm:40cm. The small opening of the steel bar ring is the end where the steel bar enters the straightening machine, and the placement position is 1m away from the opening of the straightening machine.

[0031] Step S3: Weld two support legs to each steel bar ring. The support legs are distributed at both ends of the diameter of the steel bar ring and can ensure that the centers of the three steel bar rings are on the same horizontal line. The support legs are made of steel bars with a diameter of 22mm and a length of 1.5m.

[0032] Step S4: At the point where each support leg contacts the ground, a straight 22mm, 4m long steel bar is used as a stabilizing bar to connect the three support legs in series, increasing the stability of the structure; ensuring that when the steel bar is straightened, the entire anti-rolling structure remains stable when the steel bar being adjusted swings in the frustum-shaped cylinder composed of the three steel bar rings and the waist bar, ensuring the safety of the straightening process.

[0033] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a manner common to the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, still fall within the protection scope of the present invention.

Claims

1. An anti-coiling structure for reinforcing bars before they enter a straightening machine, characterized in that, Includes a frustum-shaped cylindrical body and a support frame; The frustum-shaped cylinder has a hollow structure. The support frame is set on the ground in front of the straightening machine. The frustum-shaped cylinder is horizontally set and fixed on the support frame. The small end of the frustum-shaped cylinder is set directly opposite the inlet of the straightening machine, and the distance between the small end of the frustum-shaped cylinder and the inlet of the straightening machine is a set value.

2. The anti-coiling structure before the reinforcing bar enters the straightening machine as described in claim 1, characterized in that, The frustum-shaped cylinder includes three steel rings arranged vertically at intervals. The diameter of the middle steel ring is larger than that of the steel ring near the inlet of the straightening machine, but smaller than that of the steel ring far from the inlet of the straightening machine. The centers of the three steel rings are on the same straight line. The outer circumferences of the three steel rings are connected together by multiple waist ribs, and the multiple waist ribs are evenly distributed on the outer circumference of the steel rings.

3. The anti-coiling structure before the reinforcing bar enters the straightening machine as described in claim 2, characterized in that, The support frame includes three pairs of legs, and each pair of legs includes two legs arranged in a figure-eight shape. The tops of the three pairs of legs are respectively connected to the two sides of the three steel rings.

4. The anti-coiling structure before the reinforcing bar enters the straightening machine as described in claim 3, characterized in that, The support legs are made of threaded steel bars.

5. The anti-coiling structure before the reinforcing bar enters the straightening machine as described in claim 3, characterized in that, The bottom ends of the three legs located on both sides of the frustum-shaped cylinder are fixedly connected together by a stabilizing rib.

6. The anti-coiling structure before the reinforcing bar enters the straightening machine as described in claim 2, characterized in that, The steel bar ring is formed by bending threaded steel bars, and the lap joint is welded on both sides.

7. The anti-coiling structure before the reinforcing bar enters the straightening machine as described in claim 1, characterized in that, The set value is 0.8 to 1.2 m.

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