Simple annular steel bar welding platform

Abstract

The utility model discloses a simple annular reinforcing steel bar welding platform which comprises a supporting table, inner positioning nails and outer positioning nails, the supporting table is fixedly connected to a supporting frame, the inner positioning nails are arranged on the supporting table by a circle to form an annular structure, the multiple outer positioning nails are arranged on the supporting table at intervals, and a gap is kept between each outer positioning nail and the annular structure; the gap is slightly larger than the diameter of the annular steel bar to be bent. The inner positioning nails form an annular structure, bending is carried out around the annular structure in the bending process, the limiting effect of the outer positioning nails is matched, bending of an annular steel bar can be rapidly achieved, the bending quality is greatly improved, it is guaranteed that the bending radian and the perimeter size can meet the welding requirement of a steel bar cage, and the welding quality is improved. The two free ends of the reinforcing steel bar are welded after positioning, welding is easy, welding points are not subjected to external force in the welding process, the welding stability of the welding points can be guaranteed, the welding quality is greatly improved, and the welding quality and the welding size of the reinforcing steel bar cage are also improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for bending reinforcing bars, and relates to a simple ring-shaped reinforcing bar welding platform. Background Technology

[0002] The construction of high-speed railways involves the use of a large number of steel cages. These steel cages are typically made of ring-shaped steel bars welded together with multiple vertical steel bars. The ring-shaped steel bars come in various shapes and need to be adapted to the requirements of the corresponding pouring platform and other locations. The conventional approach is to directly wind them into a ring and weld them together. However, when the diameter of the steel bars is large, there are no support points, making it difficult to achieve circumferential bending. Furthermore, it is difficult to ensure the bending quality and weld the two free ends. In addition, some ring-shaped steel bars are not circular and have a flat ring structure. It is difficult to ensure the quality of the secondary flat bending, which in turn makes it difficult to position and weld the steel cage during the welding process. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a simple ring-shaped steel bar welding platform that can achieve high bending quality of ring-shaped steel bars and facilitate welding, thereby reducing the welding difficulty of ring-shaped steel bars in the process of welding steel cages and improving welding quality.

[0004] The technical solution adopted by this utility model is as follows: a simple ring-shaped steel bar welding platform, including a support platform, inner positioning nails and outer positioning nails. The support platform is fixedly connected to the support frame. The inner positioning nails are arranged in a ring on the support platform to form a ring structure. Multiple outer positioning nails are used and arranged at intervals on the support platform. Each outer positioning nail maintains a gap with the ring structure. The gap is slightly larger than the diameter of the ring-shaped steel bar to be bent.

[0005] Furthermore, the aforementioned support frame includes four columns, which are symmetrically and detachably fixed to the bottom of the support platform. A crossbeam is fixedly connected between two adjacent columns, and the four columns are fixedly connected by a cross beam. Anchor bolts are fixedly connected to the bottom of the columns.

[0006] Furthermore, the positioning rod at the bottom of the support platform is locked in place by bolts at the top of the aforementioned column.

[0007] Furthermore, one of the aforementioned external positioning nails has a steel bar welded positioning strip 1 on one side, and multiple external positioning nails on the other side have steel bar welded positioning strip 2 fixedly connected to their inner sides. Steel bar welded positioning strip 1 and steel bar welded positioning strip 2 are used to align the two lap welded ends of the annular steel bar.

[0008] Furthermore, the aforementioned support platform is provided with circular annular array holes and flat annular array holes of different diameters, with one end of the flat annular array hole coinciding with the semicircle of the circular annular array hole.

[0009] Furthermore, the aforementioned column is equipped with a welding gun hook, which can be hooked to the lifting hole on the welding gun, and the crossbeam is connected to a welding rod basket via a basket hook.

[0010] Furthermore, the top surface of the aforementioned support platform is provided with multiple grooves with an arc-shaped cross-section. The grooves are located below the annular reinforcing bars and can be inserted into the head of the pry bar. The multiple grooves are arranged along the gap position of the center line of the annular outer positioning nail.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, the inner positioning pin of this utility model forms a ring structure. During the bending process, the bending is performed around the ring structure. With the limiting effect of the outer positioning pin, the bending of the ring-shaped steel bar can be achieved quickly, which greatly improves the bending quality and ensures that the bending arc and circumference dimensions can meet the welding requirements of the steel cage. After positioning, the two free ends of the steel bar are welded. Welding is easy, and the welding point is not subjected to external force during the welding process, which can ensure the welding stability of the welding point and greatly improve the welding quality. It also improves the welding quality and welding dimensions of the steel cage. Attached Figure Description

[0012] Figure 1 A front view schematic diagram of a simplified ring-shaped steel bar welding platform;

[0013] Figure 2 This is a top view of a simplified ring-shaped steel bar welding platform.

[0014] Figure 3 A top view schematic diagram of a hybrid simplified ring-shaped steel bar welding platform;

[0015] Figure 4 This is a schematic diagram of the groove arrangement structure. Detailed Implementation

[0016] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1: As Figures 1-4As shown, a simple ring-shaped rebar welding platform includes a support platform 1, inner positioning nails 2, and outer positioning nails 3. The support platform 1 is fixedly connected to a support frame 4. The inner positioning nails 2 are arranged in a ring on the support platform 1 to form a ring structure. Multiple outer positioning nails 3 are arranged at intervals on the support platform 1, and each outer positioning nail 3 maintains a gap with the ring structure. This gap is slightly larger than the diameter of the ring-shaped rebar 5 to be bent, making it easy to insert the rebar into the gap. The welding platform uses the inner positioning nails to form a ring structure, and bending is performed around the ring structure during the bending process. With the limiting effect of the outer positioning nails, the ring-shaped rebar can be bent quickly, greatly improving the bending quality and ensuring that the bending arc and circumference dimensions meet the welding requirements of the rebar cage. After positioning, the two free ends of the rebar are welded. Welding is easy, and the welding point is not subjected to external force during the welding process, which can ensure the welding stability of the welding point and greatly improve the welding quality. It also improves the welding quality and welding dimensions of the rebar cage.

[0018] To facilitate adaptation to different support platforms, the support frame 4 includes four columns 401. The four columns 401 are symmetrically and detachably fixed to the bottom of the support platform 1. That is, the top of the column 401 is fitted into the positioning rod 6 set at the bottom of the support platform 1 and locked with bolts 7. The detachable connection method allows for replacement with different support platforms, reducing costs. A crossbeam 402 is fixedly connected between two adjacent columns 401, and the four columns 401 are fixedly connected by a cross beam 403. Anchor bolts 404 are fixedly connected to the bottom of the columns 401. The cross beam and crossbeam can improve the stability of the support frame, and the anchor bolts can improve the support stability and adjust the height to adapt to uneven ground.

[0019] To quickly achieve ring positioning and then perform rapid welding at designated locations, one side of the outer positioning nail 3 is equipped with a steel bar welding positioning strip 8, and the inner side of multiple outer positioning nails 3 on the other side is fixedly connected with a steel bar welding positioning strip 9. The steel bar welding positioning strip 8 and the steel bar welding positioning strip 9 are used to align the two lapped welding ends 12 of the ring steel bar. After aligning one end, the other end is wrapped around and embedded, and the other end also overlaps with the starting end. After positioning by hammering with a rubber hammer, the alignment is checked to determine whether the ring circumference meets the requirements. If a certain place protrudes, it will cause the ring to be unable to be aligned (or nearly aligned), resulting in an excessive error in the circumference of the ring steel bar after welding, which will not meet the usage requirements.

[0020] To accommodate the use of coiled and welded steel bars of different sizes, the support platform 1 is equipped with circular array holes 10 and flat circular array holes 11 of different diameters. One end of the flat circular array hole 11 coincides with the semicircle of the circular array hole 10. The inner positioning nail 2 and the outer positioning nail 3 can be inserted into the circular array hole 10 or the flat circular array hole 11, thereby matching the needs of a certain range. The inner positioning nail 2 and the outer positioning nail 3 can be installed and removed to realize the position change.

[0021] To facilitate the placement of welding guns and the retrieval of welding rods, a welding gun hook 15 is provided on the column 401. The welding gun hook 15 can be hooked onto the lifting hole provided on the welding gun. A welding rod basket 13 is hung on the crossbeam 402 through the basket hook 14.

[0022] To facilitate the disassembly of the welded reinforcing bars, the top surface of the support platform 1 is provided with multiple grooves 16 with an arc-shaped cross-section. The grooves are located below the annular reinforcing bars 5. The grooves 16 can be engaged with the head of the pry bar 17. The multiple grooves 16 are arranged along the gaps in the center line of the annular outer positioning pin. After the head of the pry bar 17 is engaged with the groove, it presses down on the outer end. Under the action of the fulcrum, the head pushes the annular reinforcing bar upward, thereby gradually removing the annular reinforcing bar.

[0023] Operating principle: Insert the starting end of the rebar into the welding joint and weld positioning strip 2 to the rebar. Gradually bend the rebar around the inner positioning nail 2 in different directions, while bending, inserting the bent part into the gap between the inner and outer positioning nails until it overlaps with the starting end. During or after inserting the rebar into the gap, use a rubber hammer to tap any areas where the gap between the rebar and the inner positioning nail is too large or the gap between the rebar and the support platform is too large to achieve a tight fit. After overlapping, use a welding gun to weld the overlap. After welding, use a pry bar to insert into the groove set on the support platform to push out the welded ring rebar.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A simple ring-shaped steel bar welding platform, characterized in that: Includes a support platform (1), inner positioning nails (2) and outer positioning nails (3). The support platform (1) is fixedly connected to the support frame (4). The inner positioning nails (2) are arranged in a ring on the support platform (1) to form a ring structure. Multiple outer positioning nails (3) are arranged at intervals on the support platform (1) and each outer positioning nail (3) maintains a gap with the ring structure. The gap is slightly larger than the diameter of the ring steel bar (5) to be bent.

2. The simplified ring-shaped steel bar welding platform according to claim 1, characterized in that: The support frame (4) includes four columns (401). The four columns (401) are symmetrically and detachably fixed to the bottom of the support platform (1). A crossbeam (402) is fixedly connected between two adjacent columns (401), and the four columns (401) are fixedly connected by a cross beam (403). Anchor bolts (404) are fixedly connected to the bottom of the columns (401).

3. The simplified ring-shaped steel bar welding platform according to claim 1, characterized in that: The top of the column (401) is fitted into the support platform (1), and the positioning rod (6) at the bottom is locked with bolts (7).

4. The simplified ring-shaped steel bar welding platform according to claim 1, characterized in that: One of the outer positioning nails (3) is provided with a steel bar welding positioning strip one (8) on one side, and multiple outer positioning nails (3) on the other side are fixedly connected with steel bar welding positioning strip two (9) on the inner side. Steel bar welding positioning strip one (8) and steel bar welding positioning strip two (9) are used to align the two lap welding ends (12) of the ring steel bar.

5. A simplified ring-shaped steel bar welding platform according to claim 1, characterized in that: The support platform (1) is provided with circular array holes (10) and flat annular array holes (11) of different diameters. One end of the flat annular array hole (11) coincides with the semicircle of the circular array hole (10).

6. A simplified ring-shaped steel bar welding platform according to claim 2, characterized in that: A welding gun hook (15) is provided on the column (401). The welding gun hook (15) can be hung on the lifting hole provided on the welding gun. The crossbeam (402) is hung with a welding rod basket (13) through the basket hook (14).

7. A simplified ring-shaped steel bar welding platform according to claim 2, characterized in that: The top surface of the support platform (1) is provided with multiple grooves (16) with an arc-shaped cross section. The grooves (16) are located below the ring steel bar (5). The grooves (16) can be inserted into the head of the pry bar (17). The multiple grooves (16) are arranged along the center line gap of the ring outer positioning nail (3).

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