Straightening protection device for preventing torsion of reinforcing steel bars

Abstract

The utility model belongs to the field of reinforcing steel bar machining, and particularly relates to a reinforcing steel bar torsion prevention straightening protection device which comprises a straightening protection device body, and the straightening protection device body comprises a support, a conical anti-swing cylinder arranged on the support and a positioning frame vertically arranged in the conical anti-swing cylinder. The conical anti-swing cylinder is provided with a large opening end and a small opening end, the large opening end of the conical anti-swing cylinder is a feed port, and the small opening end of the conical anti-swing cylinder is a discharge port; the positioning frame is arranged in the middle of the conical anti-swing cylinder or at the small opening end of the conical anti-swing cylinder. On one hand, a transition space is provided for the disc reinforcing steel bar from a coil to the reinforcing steel bar straightening machine, the disc reinforcing steel bar moves along the conical anti-swing cylinder in the straightening process, and it is avoided that when the disc reinforcing steel bar is straightened from a spiral shape, the disc reinforcing steel bar is twisted, work hardening is generated, and the mechanical property of the reinforcing steel bar is affected; on the other hand, the reinforcing steel bars are prevented from hurting people during deformation and swing, and the safety of field workers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar processing, and particularly relates to an anti-torsion and straightening protection device for steel bars. Background Technique

[0002] During the construction process, due to technical and design factors, it is inevitable to use steel bars with a diameter of 6-10 mm. However, for the convenience of production and transportation, steel bars with a diameter of 6-10 mm are generally transported to the site in the form of coiled round bars or coiled spiral bars. Before these steel bars are processed into the designed shape, a steel bar straightening machine is generally required for straightening. The principle of the existing steel bar straightening machine is to apply an external force in the axial direction of the steel bar and limit the radial movement range of the steel bar, and the reshaping of the steel bar is achieved by pulling. In the process of straightening the steel bar, on the one hand, the steel bar will twist during the straightening process due to its own spiral shape, resulting in work hardening, reducing the plasticity of the steel bar, thereby reducing the fatigue limit of the building and further affecting the construction quality; on the other hand, during the process of straightening the steel bar from the spiral shape, due to the limitation of the radial movement range, the inlet end of the straightening machine will swing violently and uncontrollably, thus increasing the risk of steel bar injury.

[0003] Therefore, an improved technical solution is needed to address the above deficiencies in the prior art. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an anti-torsion and straightening protection device for steel bars, which is pre-installed in front of the steel bar straightening machine and plays a protective role during the straightening and swinging process of the steel bar.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-torsion and straightening protection device for steel bars, including a straightening protection device, the straightening protection device includes a bracket, a conical anti-swing cylinder arranged on the bracket, and a positioning frame vertically arranged in the conical anti-swing cylinder; the conical anti-swing cylinder has a large end and a small end, the large end of the conical anti-swing cylinder is the feed inlet, and the small end of the conical anti-swing cylinder is the discharge outlet; the positioning frame is arranged in the middle of the conical anti-swing cylinder or at the small end of the conical anti-swing cylinder.

[0007] Further, the positioning frame has positioning holes, and the diameter of the circumscribed circle of the positioning holes is smaller than the inner diameter of the small end of the conical anti-swing cylinder.

[0008] Further, the positioning holes can be completely projected within the range of the small end of the conical anti-swing cylinder.

[0009] Further, the positioning frame is formed by enclosing three or more round bars.

[0010] Further, the round bar is coated with a round tube, and the round tube can rotate freely on the round bar.

[0011] Further, the length of the round bar is adapted to the middle diameter of the conical anti-sway cylinder.

[0012] Further, the positioning frame is formed by enclosing 4 round bars in a rectangle; the positioning frame includes two groups of oppositely arranged round bars, and both ends of one group of round bars are detachably installed on the conical anti-sway cylinder.

[0013] Further, the conical anti-sway cylinder includes a plurality of main bars arranged radially and a plurality of annular stirrups fixed inside the main bars; the bracket includes a bottom plate and four adjustable legs fixed on the bottom plate, and the upper ends of the adjustable legs are fixed on the annular stirrups.

[0014] Further, the inner diameters of the large end and the small end of the conical anti-sway cylinder and the length of the conical anti-sway cylinder are set according to the steel bar size, the size of the inlet of the steel bar straightening machine, and the actual space size of the steel bar processing area.

[0015] Further, the anti-torsion straightening protection device for steel bars further includes a turntable for placing disc-shaped steel bars. The turntable includes a base and a fixed support installed on the base through a bearing. The fixed support includes a circular tray and a core column fixed at the center of the tray.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The structure of the present utility model is simple and the function is practical; on the one hand, the present utility model provides a transition space for the disc-shaped steel bar from the coiled state to the steel bar straightening machine. The coiled steel bar moves along the conical anti-sway cylinder during the straightening process, avoiding the torsion and work hardening of the disc-shaped steel bar when it changes from the spiral form to being straightened, which affects the mechanical properties of the steel bar; on the other hand, the present utility model aims to prevent the steel bar from hurting people when deforming and swinging, ensuring the safety of on-site workers. Description of the Drawings

[0018] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0020] Figure 2 It is a schematic structural diagram of the conical anti-sway cylinder of an embodiment of the present utility model.

[0021] Figure 3 It is a front view structural diagram of the conical anti-sway cylinder of an embodiment of the present utility model.

[0022] Figure 4 This is the front view structural schematic diagram of the positioning frame in the embodiment of the present utility model.

[0023] Figure 5 This is the matching schematic diagram of the round tube and the round bar in the embodiment of the present utility model.

[0024] In the figure: 1, turntable; 2, conical anti-sway cylinder; 3, positioning frame; 4, bracket; 5, round bar; 51, mounting hole; 6, round tube; 7, main reinforcement; 8, circular stirrup. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present utility model.

[0026] In the description of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0027] Next, the present utility model will be described in detail with reference to the drawings and in combination with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0028] As Figures 1 to 4 shown, an anti-torsion and straightening protection device for steel bars includes a straightening protection device and a turntable 1 for placing disk-shaped steel bars;

[0029] The straightening protection device includes a bracket 4, a conical anti-sway cylinder 2 arranged on the bracket 4, and a positioning frame 3 vertically arranged in the conical anti-sway cylinder 2; the conical anti-sway cylinder 2 has a large end and a small end, the large end of the conical anti-sway cylinder 2 is the feed port, and the small end of the conical anti-sway cylinder 2 is the discharge port; the positioning frame 3 is arranged in the middle of the conical anti-sway cylinder 2 or at the small end of the conical anti-sway cylinder 2; the positioning frame 3 has a positioning hole, and the diameter of the circumscribed circle of the positioning hole is smaller than the inner diameter of the small end of the conical anti-sway cylinder 2;

[0030] The turntable 1 includes a base and a fixed support mounted on the base through a bearing. The fixed support includes a circular tray and a core column fixed at the center of the tray; Figure 1 The turntable 1 and the straightening protection device in [reference] are only schematic structural diagrams, and the size ratio between the two is different from the actual situation.

[0031] During use, the turntable 1, the conical anti-sway cylinder 2 and the steel bar straightening machine are arranged in a row. The coil round or coil spiral is sleeved on the core column, and then the head end of the steel bar is passed through the large end, the positioning frame 3 and the small end in sequence, and finally placed at the inlet end of the steel bar straightening machine; the conical anti-sway cylinder 2 plays a role in restraining the helically fed steel bar, and the positioning frame 3 further limits the movement space of the steel bar, ensuring that the part of the steel bar inside the conical anti-sway cylinder 2 is lower than the height on the coil spiral, preventing the steel bar from bypassing from the top of the coil spiral and entering the straightening machine in a spiral shape and twisting.

[0032] Furthermore, as Figures 1 to 3 shown, the positioning hole can be completely projected within the range of the small end of the conical anti-sway cylinder 2; preferably, the positioning hole is coaxial with the conical anti-sway cylinder 2.

[0033] Furthermore, as Figures 1 to 4 shown, the positioning frame 3 is formed by enclosing more than three round bars 5, such as an equilateral triangle, a rectangle, a regular pentagon or other regular polygons; preferably, as Figures 4 - 5 shown, the outer surfaces of the round bars 5 are all coated with round tubes 6, and the round tubes 6 can rotate freely on the round bars 5; the round bars 5 can be made of materials such as steel bars, round steel, round tubes 6, etc. In this embodiment, the rotation of the outer coated round tubes 6 can reduce the friction and wear of the steel bars during the steel bar modulation process.

[0034] Furthermore, as Figures 1 to 3 shown, the positioning frame 3 is arranged in the middle of the conical anti-sway cylinder 2, and the length of the round bar 5 is adapted to the middle diameter of the conical anti-sway cylinder 2.

[0035] Preferably, as Figures 1 to 4As shown, the positioning frame 3 is formed into a rectangle by enclosing four round bars 5; the positioning frame 3 includes two groups of relatively arranged round bars 5, and both ends of one group of round bars 5 are detachably installed on the conical anti-sway cylinder 2; as Figures 1 to 4 shown, the positioning frame 3 includes two groups of longer round steel bars and shorter round steel bars welded between the two longer round steel bars. Both ends of the longer round steel bars can be tied and fixed to the circular stirrups 8, or fixed by U-shaped bolts, or the ends of the longer round steel bars are opened, and at the same time, holes are opened in the circular stirrups 8, and then the longer round steel bars and the circular stirrups 8 are connected by bolts and nuts.

[0036] Furthermore, the conical anti-sway cylinder 2 includes a number of main bars 7 arranged radially and a number of circular stirrups 8 fixed inside the main bars 7; as Figures 1 to 3 shown, the number of the main bars 7 is four, and the number of the circular stirrups 8 is five with different sizes. The actual number of the main bars 7 and the circular stirrups 8 can be adjusted according to needs; the support 4 includes a bottom plate and four adjustable legs fixed on the bottom plate. The upper ends of the adjustable legs are fixed on the circular stirrups 8; the support 4 is connected by a metal material with sufficient load-bearing capacity. For example, the bottom plate can be a steel plate or a grid structure, and sandbags, test stones, etc. can be stacked on it during use for stability; the adjustable legs can be made of square tubes, H-shaped steel, square steel, etc. The adjustable legs include an upper leg fixed on the circular stirrups 8 and a lower leg fixed on the bottom plate. A number of mounting holes 51 are horizontally opened on both the upper leg and the lower leg; the upper leg and the lower leg are connected by bolts passing through their mounting holes 51, so as to adjust the height of the conical anti-sway cylinder 2 according to actual needs during use.

[0037] During the construction of a construction project, a steel bar straightening machine is generally used for steel bars with a diameter less than 10 cm. Therefore, the size limit of the large and small ends of the conical anti-sway cylinder 2 in the present invention is not only referenced to the size of the steel bars or the size of the inlet of the steel bar straightening machine, but more importantly, to prevent the steel bars from swinging and hurting people according to the actual space conditions in the steel bar processing area; the turntable 1, the conical anti-sway cylinder 2, the positioning frame 3, and the support 4 can adjust their spatial positions according to actual conditions, so as to change the erection form of the anti-steel bar torsion and straightening protection device.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model are within the scope of protection of the pending claims of the present utility model.

Claims

1. A steel bar torsion straightening protection device, characterized in that: The invention comprises a straightening protection device, the straightening protection device comprising a bracket (4), a conical anti-sway cylinder (2) arranged on the bracket (4), and a positioning frame (3) arranged vertically in the conical anti-sway cylinder (2); the conical anti-sway cylinder (2) has a large end and a small end, the large end of the conical anti-sway cylinder (2) is a feed port, and the small end of the conical anti-sway cylinder (2) is a discharge port; the positioning frame (3) is arranged in the middle of the conical anti-sway cylinder (2) or at the small end of the conical anti-sway cylinder (2); the positioning frame (3) is surrounded by four round rods (5) to form a rectangle; the positioning frame (3) comprises two groups of round rods (5) arranged opposite to each other, wherein the two ends of one group of round rods (5) can be detachably mounted on the conical anti-sway cylinder (2).

2. The steel bar torsion straightening protection device according to claim 1 is characterized in that: The positioning frame (3) has a positioning hole in it, and the diameter of the circumscribed circle of the positioning hole is smaller than the inner diameter of the small-mouth end of the conical anti-sway cylinder (2).

3. The steel bar straightening protection device against torsion according to claim 2 is characterized in that: The positioning hole can be completely projected within the small mouth end range of the conical anti-sway cylinder (2).

4. The steel bar straightening protection device against torsion according to claim 1 is characterized in that: The round rods (5) are covered with round tubes (6), and the round tubes (6) can rotate freely on the round rods (5).

5. The steel bar straightening protection device against torsion according to claim 1 is characterized in that: The length of the round rod (5) is adapted to the diameter of the middle portion of the conical anti-sway cylinder (2).

6. The steel bar straightening protection device against torsion according to claim 1 is characterized in that: The conical anti-sway cylinder (2) comprises a plurality of main ribs (7) arranged radially and a plurality of annular stirrups (8) fixed inside the main ribs (7); the bracket (4) comprises a bottom plate and four adjustable legs fixed on the bottom plate, and the upper ends of the adjustable legs are fixed on the annular stirrups (8).

7. The steel bar straightening protection device against torsion according to claim 1 is characterized in that: The inner diameters of the large end and the small end of the conical anti-sway cylinder (2) and the length of the conical anti-sway cylinder (2) are set according to the size of the steel bar, the inlet size of the steel bar straightening machine and the actual space size of the steel bar processing area.

8. The steel bar straightening protection device against torsion according to claim 1 is characterized in that: It also includes a turntable (1) for placing disc steel bars, the turntable (1) including a base and a fixed support mounted on the base via a bearing, the fixed support including a circular tray and a core column fixed at the center of the tray.

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