Road and bridge steel cage welding device

Abstract

This utility model belongs to the field of rebar cage processing, and particularly relates to a welding device for road and bridge rebar cages. The device includes a horizontally positioned first fixing pipe with a support at its bottom. At least two connecting pipes are mounted on the first fixing pipe, each with a second fixing pipe that rotates freely back and forth. A positioning plate for fixing positioning stirrups is mounted on the outer side of the second fixing pipe. An adjusting component for adjusting the spacing is located between the positioning plate and the second fixing pipe. The positioning plate has a placement groove for installing the positioning stirrups, and the groove wall has several channels for placing the main reinforcement bars. This design facilitates the positioning of the stirrups and main reinforcement bars, allowing the main reinforcement bars to be welded evenly and accurately onto the positioning stirrups. It also facilitates the rotation of the rebar cage, making the welding work easier. Finally, the adjusting component allows for adaptation to positioning stirrups of different diameters, and facilitates the removal and transfer of the rebar cage after welding the positioning stirrups.

Description

Technical Field

[0001] This utility model belongs to the field of steel cage processing, and in particular relates to a welding device for steel cages of roads and bridges. Background Technology

[0002] A steel cage is a three-dimensional skeleton structure formed by welding or binding steel bars such as main bars and stirrups. It is widely used in building engineering and road and bridge construction. Its main function is to enhance the tensile, shear and compressive strength of concrete components and improve the integrity and durability of the structure.

[0003] Reinforcing cage welding is divided into fully automatic welding and manual welding. Different processing methods are usually selected according to the actual situation. In the manual welding process, the main bars need to be welded into a ring structure first by positioning stirrups, and then spiral stirrups are wrapped around to prevent the main bars from shifting and to improve the overall rigidity. However, when welding the main bars onto the positioning stirrups, the welder finds that the main bars are heavy and long, making the work difficult. Furthermore, the main bars will bend under their own weight, causing them to be unable to be placed accurately. This results in uneven spacing between the main bars and the positioning stirrups, which leads to reduced load-bearing capacity and deformation during hoisting. Utility Model Content

[0004] The purpose of this utility model is to provide a welding device for steel cages of road bridges, which facilitates the uniform welding of main reinforcement bars onto positioning stirrups.

[0005] The aforementioned road and bridge steel reinforcement cage welding device includes a horizontally arranged first fixed pipe with a support at its bottom. At least two connecting pipes are provided on the fixed pipe, and each connecting pipe is provided with a second fixed pipe that can rotate freely back and forth. A positioning plate for fixing positioning stirrups is provided on the outside of the second fixed pipe. An adjustment component for adjusting the spacing is provided between the positioning plate and the second fixed pipe. The positioning plate has a placement groove for installing positioning stirrups, and the groove wall has several channels for placing main reinforcement bars.

[0006] Furthermore, the adjustment assembly includes two connecting rods, one of which is connected to the bottom of the positioning plate and can rotate freely, and the other is connected to the top of the second fixed tube. The two connecting rods are connected by an adjustment tube, and both connecting rods are threaded into the adjustment tube.

[0007] Furthermore, the placement groove wall is composed of several sets of clamping plates distributed in a front-to-back manner. Each clamping plate is composed of two clamping blocks that clamp each other from left to right. The clamping blocks are all in a front-to-back sliding fit with the positioning plate. The outer wall of the positioning plate is provided with a limiting block for fixing the clamping blocks.

[0008] Furthermore, the positioning plate has a sliding groove on the top, and a slider that slides in the sliding groove is provided therein. The top of the sliding groove is fixed to the bottom of the clamping block. The front and rear sides of the positioning plate are respectively provided with through grooves that are connected to the corresponding sliding grooves. One end of the limiting block is connected to the slider through the through groove in a threaded fit, and the width of the through groove is smaller than the diameter of the movable end of the limiting block.

[0009] Furthermore, the bracket is a telescopic rod, and the top end of the telescopic rod is located between the two connecting pipes and fixed to the bottom of the first fixed pipe.

[0010] Furthermore, the width of the clamping block is smaller than the distance between adjacent clamping blocks within the same groove.

[0011] Furthermore, the connecting pipe is in sliding fit with the first fixing pipe, and the first fixing pipe on both the left and right sides of the connecting pipe is fitted with a limiting ring for fixing the connecting pipe to the first fixing pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention facilitates the positioning of the positioning stirrups by setting a positioning plate, and further restricts the position of the main reinforcement by opening a placement groove on the positioning plate, so that the main reinforcement can be welded evenly and accurately onto the positioning stirrups. Then, the setting of the connecting pipe and the second fixing pipe facilitates rotation on the first fixing pipe, making the welding work easier. Finally, the setting of the adjustment component facilitates the adaptation to positioning stirrups of different diameters, and makes it easy to disassemble and transfer the steel cage after the positioning stirrups have been welded. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 BB section view; Figure 4 for Figure 3 Enlarged view at point C The components in the diagram are named as follows: 1. First fixing pipe; 2. Connecting pipe; 3. Second fixing pipe; 4. Positioning plate; 5. Clamping block; 6. Limiting block; 7. Adjusting pipe; 8. Connecting rod. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Example

[0015] This embodiment describes a road and bridge steel reinforcement cage welding device, such as... Figure 1 The first fixed pipe 1 is horizontally set, and a bracket is set at the bottom of the first fixed pipe 1 to facilitate the support of the steel cage and make it suspended in the air. This makes it easy to rotate and adjust the position of the steel cage for welding. It is also easy to use with the existing electric rotating bracket. After the positioning stirrups and main bars are welded, they are placed on the rotating bracket for the welding of spiral stirrups. This makes the work steps more closely connected and effectively improves the work efficiency. The first fixed pipe 1 is provided with at least two connecting pipes 2, and each connecting pipe 2 is provided with a second fixed pipe 3 that rotates freely back and forth, so as to drive the positioning stirrup to rotate, thereby welding the main reinforcement evenly at different positions. The second fixing tube 3 is provided with a positioning plate 4 for fixing the positioning stirrups, which facilitates the support of positioning stirrups of different diameters and also facilitates the removal of the positioning stirrups after welding with the main reinforcement, thereby improving accuracy and reducing the difficulty of welding workers' work. An adjustment component for adjusting the spacing is provided between the positioning plate 4 and the second fixing tube 3, which facilitates improving its applicability and operational flexibility. The positioning plate 4 has a slot for installing the positioning stirrup, which facilitates the positioning and support of the stirrup, preventing displacement during welding with the main reinforcement, and also facilitating the overall rotation of the positioning stirrup for welding with the main reinforcement at different positions. The placement groove has several channels in its wall for placing the main reinforcement bars, which facilitates the support of the main reinforcement bars and ensures that they are evenly welded to the positioning stirrups. The connecting pipe 2 and the second fixed pipe 3 are connected by a bearing to allow free rotation. The inner ring of the bearing is fixed to the connecting pipe 2, and the outer ring is fixed to the inner wall of the second fixed pipe 3.

[0016] like Figure 1 and Figure 2 As shown, the adjustment assembly includes two connecting rods 8, one of which is connected to the bottom of the positioning plate 4 and can rotate freely, so as to avoid rotating the positioning plate 4 when adjusting the distance between the second fixed tube 3 and the positioning plate 4 by rotating the adjustment tube 7; The other rod is connected to the top of the second fixed tube 3. The two connecting rods 8 are connected by an adjusting tube 7, and the connecting rods 8 are threaded to the adjusting tube 7. This allows the length of the connecting rods 8 to be adjusted by rotating the adjusting tube 7, thereby adjusting the distance between the second fixed tube 3 and the positioning plate 4. This makes the positioning plate 4 suitable for welding positioning stirrups and main bars of different diameters. It also facilitates disassembly and transfer after the welding of the positioning stirrups and main bars is completed for subsequent welding of spiral stirrups. The adjustment assembly may also include a second connecting rod, which is connected to the bottom of the positioning plate 4 and can rotate freely left and right. A second adjusting tube is fixed on the second fixed tube 3, and the movable end of the second connecting rod is threaded into the second adjusting tube. In use, the distance between the second fixed tube 3 and the positioning plate 4 is adjusted by rotating the second connecting rod.

[0017] The placement groove wall is composed of several sets of clamping plates distributed front and back. Each clamping plate consists of two clamping blocks 5 that clamp each other from left to right. The clamping blocks 5 are all in a sliding fit with the positioning plate 4. The outer wall of the positioning plate 4 is provided with limiting blocks 6 for fixing the clamping blocks 5. This not only makes it easy to limit the positioning stirrups with the clamping blocks 5 to prevent them from falling off, but also makes it easy to adjust the spacing between the clamping blocks 5 according to the number of main bars to improve applicability.

[0018] like Figure 3 and Figure 4 As shown, the positioning plate 4 has a sliding groove on the top, and a slider that slides in the sliding groove is provided therein. The top of the sliding plate is fixed to the bottom of the clamping block 5. The front and rear sides of the positioning plate 4 are respectively provided with through grooves that are connected to the corresponding sliding grooves. One end of the limiting block 6 is connected to the slider through the through groove in a threaded fit. The width of the through groove is smaller than the diameter of the movable end of the limiting block 6, which makes it easy to adjust flexibly according to the number and spacing of the main reinforcement bars. This makes the welding points of the main reinforcement bars and the positioning stirrups more uniform and accurate, and at the same time reduces the difficulty of the welding workers to a certain extent. The limiting block 6 can be either a screw inserted into the slider in a threaded fit and fixed to the positioning plate 4 by its top end, or a screw fixed to the slider and then a nut fitted on the outside of the through groove, which is fixed to the positioning plate 4 by tightening the nut.

[0019] The support is a telescopic rod, and the top of the telescopic rod is located between the two connecting pipes 2 and fixed to the bottom of the first fixed pipe 1, which makes it easy to adjust its height to a suitable height. This is convenient for welding workers to operate and also convenient to use with the rotating support for subsequent spiral hoop welding work. The telescopic rod can be adjusted in height using a hydraulic cylinder or by using an inner tube and an outer tube in combination. When using an inner tube and an outer tube, it can be fixed by a screw or a pin.

[0020] The width of the clamping block 5 is less than the distance between adjacent clamping blocks 5 in the same groove. When the diameter of the positioning stirrup is large and the number of main bars is large, the clamping blocks 5 distributed in front and behind can be staggered by sliding the clamping blocks 5 to accommodate more main bars.

[0021] The connecting pipe 2 is slidably fitted with the first fixed pipe 1, and the first fixed pipe 1 on both the left and right sides of the connecting pipe 2 is fitted with a limiting ring for fixing the connecting pipe 2 on the first fixed pipe 1, so as to adjust the spacing between the connecting pipes 2 and increase or decrease the number according to the usage requirements. The connecting pipe 2 and the first fixed pipe 1 slide together via a groove and a slider. During manufacturing, at least two second grooves are opened on the side wall of the first fixed pipe 1. The inner side wall of the connecting pipe 2 is correspondingly provided with a second slider that slides into the second groove. The limiting ring is threaded with the first fixed pipe 1, and its diameter is equal to or less than the outer diameter of the connecting pipe 2. This limits the connecting pipe 2 while avoiding affecting the rotational engagement between the second fixed pipe 3 and the connecting pipe 2.

[0022] The working principle is as follows: First, the positioning stirrups are installed on the positioning plate 4. Then, the adjusting pipe 7 is rotated to make the positioning stirrups fit with the positioning plate 4. Then, the position of the clamping block 5 is adjusted according to the number and spacing of the main reinforcement bars and fixed by the limiting block 6. Then, the position of the sliding connecting pipe 2 is used to weld the subsequent positioning stirrups. Finally, after adjusting the height of the telescopic rod, one side is pulled to let it fall onto the rotating bracket for spiral stirrup welding. Alternatively, after hoisting the steel cage, the adjusting pipe 7 is rotated to make the positioning stirrups and main reinforcement bars fall off the positioning plate 4 and be transferred. In the manufacturing process, in order to avoid the steel cage being unable to be removed, only the positioning stirrups on one side of the bracket are welded, and the position of the connecting pipe 2 is continuously adjusted during the process for continuous welding.

Claims

1. A welding device for steel cages of road bridges, comprising a horizontally arranged first fixing pipe (1), the bottom of which is provided with a support, characterized in that: The first fixed pipe (1) is provided with at least two connecting pipes (2), and each connecting pipe (2) is provided with a second fixed pipe (3) that rotates freely back and forth. The outer side of the second fixed pipe (3) is provided with a positioning plate (4) for fixing the positioning stirrup. An adjustment component for adjusting the spacing is provided between the positioning plate (4) and the second fixed pipe (3). The positioning plate (4) is provided with a placement groove for installing the positioning stirrup. The groove wall is provided with several channels for placing the main reinforcement.

2. The roadway bridge reinforcement cage welding apparatus of claim 1, wherein: The adjustment assembly includes two connecting rods (8), one of which is connected to the bottom of the positioning plate (4) and can rotate freely, and the other is connected to the top of the second fixed tube (3). The two connecting rods (8) are connected by an adjustment tube (7), and the connecting rods (8) are threaded to the adjustment tube (7).

3. A road bridge reinforcement cage welding apparatus as claimed in claim 1 or 2, characterised in that: The placement groove wall is composed of several sets of clamping plates distributed in front and back. Each clamping plate is composed of two clamping blocks (5) that clamp each other in a left and right manner. The clamping blocks (5) are all in a front and back sliding fit with the positioning plate (4). The outer side wall of the positioning plate (4) is provided with a limiting block (6) for fixing the clamping blocks (5).

4. The roadway bridge reinforcement cage welding apparatus of claim 3, wherein: The positioning plate (4) has a sliding groove on the top, and a slider that slides in the sliding groove is provided therein. The top of the sliding plate is fixed to the bottom of the clamping block (5). The front and rear sides of the positioning plate (4) are respectively provided with through grooves that are connected to the corresponding sliding grooves. One end of the limiting block (6) is connected to the slider through the through groove in a threaded fit, and the width of the through groove is smaller than the diameter of the movable end of the limiting block (6).

5. The roadway bridge reinforcement cage welding apparatus of claim 4, wherein: The bracket is a telescopic rod, and the top of the telescopic rod is located between the two connecting pipes (2) and fixed to the bottom of the first fixed pipe (1).

6. The roadway bridge reinforcement cage welding apparatus of claim 5, wherein: The width of the clamping block (5) is smaller than the distance between adjacent clamping blocks (5) in the same groove.

7. The road and bridge steel cage welding device according to claim 6, characterized in that: The connecting pipe (2) is in sliding fit with the first fixed pipe (1), and the first fixed pipe (1) on both the left and right sides of the connecting pipe (2) is fitted with a limiting ring for fixing the connecting pipe (2) on the first fixed pipe (1).

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