Prefabricated box girder steel reinforcement framework welding tool

Abstract

The utility model provides a prefabricated box girder reinforcement cage welding tool, which relates to the technical field of prefabricated part processing equipment and comprises a plurality of transverse supports, two longitudinal support rods and two placing rods are connected among the transverse supports, the two longitudinal support rods are positioned on two sides of the tops of the transverse supports, and the two placing rods are positioned on the two sides of the tops of the transverse supports. The two containing rods are located at the bottoms of the transverse supports, the transverse supports located at the two ends are each provided with a plurality of bearing blocks for containing longitudinal steel bars on the outer side, and a plurality of fixing bases for fixing steel bar rings are distributed on the faces, close to each other, of the two longitudinal supporting rods in the length direction of the longitudinal supporting rods. Placing grooves for placing steel bar rings are distributed in the tops of the placing rods in the length direction of the placing rods, and limiting mechanisms for limiting the positions of the longitudinal steel bars on the inner sides are further arranged on the longitudinal supporting rods. The welding efficiency of the steel reinforcement framework can be improved, and meanwhile the accuracy of the welding position is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of precast component processing equipment, and more specifically, to a welding fixture for the steel reinforcement skeleton of a precast box girder. Background Technology

[0002] Precast box girders are a type of hollow-section beam commonly used in bridge engineering. They are prefabricated in factories or prefabrication sites and possess high bending and torsional resistance, making them widely used in various types of bridge construction. Precast box girders are divided into prestressed reinforced concrete box girders and steel box girders. For reinforced concrete box girders, the reinforcing steel frame needs to be welded in advance before pouring concrete to form a complete box girder structure.

[0003] Reference Figure 5 As shown, the precast box girder reinforcement cage mainly includes reinforcement rings 101 adapted to the cross-sectional shape of the precast box girder. Multiple reinforcement rings 101 are longitudinally distributed, with inner longitudinal reinforcement bars 102, outer longitudinal reinforcement bars 103, upper bottom longitudinal reinforcement bars 104, and lower bottom longitudinal reinforcement bars 105 distributed between them. Currently, during welding, workers need to first place the outer longitudinal reinforcement bars 103 on a welding frame, then weld the reinforcement rings 101 one by one to the outer longitudinal reinforcement bars 103 to form an overall structure, and then weld the inner longitudinal reinforcement bars 102, upper bottom longitudinal reinforcement bars 104, and lower bottom longitudinal reinforcement bars 105. During the welding process, one worker needs to support the reinforcement bars to be welded while another worker performs the welding operation. The overall welding efficiency of the reinforcement cage is low, and the accuracy of the reinforcement bar position after welding is difficult to guarantee. Utility Model Content

[0004] The purpose of this utility model is to provide a welding fixture for the steel reinforcement cage of precast box girders, which can improve the welding efficiency of the steel reinforcement cage while ensuring the accuracy of the welding position.

[0005] This utility model is achieved through the following technical solution: a welding fixture for the reinforcing steel skeleton of a precast box girder, comprising multiple transverse supports, two longitudinal support rods and two placement rods connected between the multiple transverse supports, the two longitudinal support rods located on the top two sides of the transverse supports, the two placement rods located at the bottom of the transverse supports, multiple support blocks for placing the outer longitudinal reinforcing bars on the transverse supports at both ends, multiple fixing seats for fixing reinforcing bar rings distributed along their own length on the side of the two longitudinal support rods that are close to each other, and placement grooves for placing reinforcing bar rings distributed along their own length on the top of the placement rods, and a limiting mechanism for limiting the position of the inner longitudinal reinforcing bars on the longitudinal support rods; the limiting mechanism includes a first positioning seat and a second positioning seat, the first positioning seat having an insertion hole for the inner longitudinal reinforcing bars to pass through, and the second positioning seat having a locking groove for clamping the inner longitudinal reinforcing bars.

[0006] Furthermore, a limiting groove is formed at the top of the longitudinal support rod along its own length direction, and a sliding seat is provided on both the first positioning seat and the second positioning seat, and the sliding seat is slidably disposed in the limiting groove.

[0007] Furthermore, the second positioning seat includes a sliding part and a flipping part. The top of the sliding part is provided with a mounting groove, and the flipping part is hinged on the mounting groove and can fit against the bottom wall of the mounting groove.

[0008] Furthermore, one end of the longitudinal support rod extends outside the transverse support, and both the first positioning seat and the second positioning seat can slide to the end of the longitudinal support rod that extends outside the transverse support.

[0009] Furthermore, each of the two transverse supports located at opposite ends is provided with a lower placement seat, and the top of the lower placement seat has multiple lap grooves distributed along its own length for the erection of longitudinal reinforcing bars on the bottom surface.

[0010] Furthermore, an upper placement seat is hinged to one side of the lower placement seat, and the upper placement seat has multiple lap grooves distributed along its own length direction for lapping the longitudinal reinforcing bars on the upper bottom surface.

[0011] Furthermore, the upper placement seat is provided with an arc-shaped connecting rod, and the lower placement seat is provided with a hinge seat. The arc-shaped connecting rod is rotatably connected to the hinge seat via a rotating shaft, and the hinge seat is provided with a positioning pin for fixing the position of the arc-shaped connecting rod.

[0012] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0013] 1. This utility model facilitates the welding process by positioning the reinforcing ring, inner longitudinal reinforcing bars, outer longitudinal reinforcing bars, upper bottom longitudinal reinforcing bars, and lower bottom longitudinal reinforcing bars separately, thereby improving the welding efficiency of the reinforcing bar skeleton while ensuring the accuracy of the welding position.

[0014] 2. This utility model slidably sets the limiting mechanism on the longitudinal support rod and flips the upper placement seat on the lower placement seat so that the limiting mechanism and the upper placement seat can be stored before welding the inner longitudinal steel bars and the upper bottom longitudinal steel bars, thus avoiding obstruction to the previous welding operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3This is a schematic diagram of the limiting mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the lower and upper placement seats of this utility model;

[0019] Figure 5 This is a structural schematic diagram of the steel reinforcement cage for precast box girders in the prior art;

[0020] Reference numerals: 1-Transverse support, 2-Longitudinal support rod, 21-Limiting groove, 3-Placement rod, 4-Supporting block, 5-Fixing seat, 6-Limiting mechanism, 61-First positioning seat, 62-Second positioning seat, 621-Sliding part, 6211-Mounting groove, 622-Flipping part, 63-Sliding seat, 7-Lower placement seat, 71-Hinge seat, 711-Positioning pin, 8-Upper placement seat, 81-Arc-shaped connecting rod, 82-Rotating shaft, 101-Reinforcing bar ring, 102-Inner longitudinal reinforcing bar, 103-Outer longitudinal reinforcing bar, 104-Upper bottom longitudinal reinforcing bar, 105-Lower bottom longitudinal reinforcing bar. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The following is for reference Figures 1-5 As shown in the illustration, and further explained with reference to specific embodiments, this embodiment provides a welding fixture for the steel reinforcement cage of a precast box girder. Figure 1 , Figure 2 As shown, it includes multiple horizontal supports 1, with two longitudinal support rods 2 and two placement rods 3 welded between the multiple horizontal supports 1. The two longitudinal support rods 2 are located on the top two sides of the horizontal supports 1, and the two placement rods 3 are located at the bottom of the horizontal supports 1, forming an integral frame structure.

[0024] Reference Figure 2As shown, multiple support blocks 4 for placing the outer longitudinal steel bars 103 are provided on the transverse supports 1 at both ends. Multiple fixing seats 5 for fixing the steel bar rings 101 are distributed along their own length on the side of the two longitudinal support rods 2 that are close to each other. Placement grooves for placing the steel bar rings 101 are distributed along their own length on the top of the placement rods 3. Lower placement seats 7 are provided on the side of the transverse supports 1 at both ends that are far from each other. Multiple lap grooves for lapping the lower longitudinal steel bars 105 are distributed along their own length on the top of the lower placement seats 7.

[0025] When welding the reinforcing bar rings 101 one by one to the outer longitudinal reinforcing bars 103 and the bottom longitudinal reinforcing bars 105, firstly, place the outer longitudinal reinforcing bars 103 one by one between the support blocks 4 at both ends, and place the bottom longitudinal reinforcing bars 105 one by one between the lower placement seats 7 at both ends. Then, clamp the two sides of the reinforcing bar rings 101 onto the fixing seats 5 of the two longitudinal support rods 2, and clamp the bottom of the reinforcing bar rings 101 into the placement groove at the top of the placement rod 3. Weld the reinforcing bar rings 101 and the outer longitudinal reinforcing bars 103, and the reinforcing bar rings 101 and the bottom longitudinal reinforcing bars 105 to form an integral structure.

[0026] Reference Figure 2 , Figure 3 As shown, the longitudinal support rod 2 is also provided with a limiting mechanism 6 for limiting the position of the inner longitudinal reinforcing bar 102; the limiting mechanism 6 includes a first positioning seat 61 and a second positioning seat 62. The first positioning seat 61 has an insertion hole for the inner longitudinal reinforcing bar 102 to pass through, and the second positioning seat 62 has a slot for clamping the inner longitudinal reinforcing bar 102. When multiple inner longitudinal reinforcing bars 102 are installed on the limiting mechanism 6 and welded, when installing each inner longitudinal reinforcing bar 102, one end of the inner longitudinal reinforcing bar 102 is first inserted into the insertion hole of the first positioning seat 61, and then the inner longitudinal reinforcing bar 102 is pressed by the slot of the second positioning seat 62 so that the inner longitudinal reinforcing bar 102 abuts against the reinforcing bar ring 101 to facilitate welding.

[0027] Furthermore, a limiting groove 21 is formed at the top of the longitudinal support rod 2 along its length. A sliding seat 63 is provided on both the first positioning seat 61 and the second positioning seat 62, and the sliding seat 63 is slidably disposed within the limiting groove 21. Sliding the second positioning seat 62 along the length of the limiting groove 21 allows the pressing position of the inner longitudinal steel bar 102 to be changed during welding, ensuring that the inner longitudinal steel bar 102 is always pressed against the steel bar ring 101. It should be noted that one end of the longitudinal support rod 2 extends outside the transverse support 1, and both the first positioning seat 61 and the second positioning seat 62 can slide to the end of the longitudinal support rod 2 extending outside the transverse support 1. During the welding of the steel bar ring 101, the outer longitudinal steel bar 103, and the lower bottom longitudinal steel bar 105, the limiting mechanism 6 is moved as a whole to the end of the longitudinal support rod 2 located outside the transverse support 1 to avoid obstruction during operation.

[0028] Reference Figure 3 As shown, the second positioning seat 62 includes a sliding part 621 and a flipping part 622. The top of the sliding part 621 has a mounting groove 6211, and the flipping part 622 is hinged to the mounting groove 6211 and can fit against the bottom wall of the mounting groove 6211. When the inner longitudinal steel bar 102 is installed between the first positioning seat 61 and the second positioning seat 62, the flipping part 622 is flipped upward to facilitate the insertion of the inner longitudinal steel bar 102, and its position is adjusted after insertion. When the flipping part 622 rotates to fit against the bottom wall of the mounting groove 6211, it has a pressure against the inner longitudinal steel bar 102 under its own weight, thereby enabling the inner longitudinal steel bar 102 to press against the steel bar ring 101.

[0029] Reference Figure 2 , Figure 4 As shown, an upper placement seat 8 is hinged to one side of the lower placement seat 7. The upper placement seat 8 has multiple lap grooves distributed along its length for placing the upper longitudinal reinforcing bars 104, facilitating their placement and welding to the reinforcing bar ring 101. An arc-shaped connecting rod 81 is provided on the upper placement seat 8, and a hinge seat 71 is provided on the lower placement seat 7. The arc-shaped connecting rod 81 is rotatably connected to the hinge seat 71 via a rotating shaft 82. A positioning pin 711 is provided on the hinge seat 71 to fix the position of the arc-shaped connecting rod 81.

[0030] Before welding the upper longitudinal reinforcement 104, rotate the upper placement seat 8 downwards until its top height is lower than the top height of the lower placement seat 7 to avoid obstructing the welding of the reinforcement ring 101, the outer longitudinal reinforcement 103, and the lower longitudinal reinforcement 105. Finally, when welding the upper longitudinal reinforcement 104, rotate the upper placement seat 8 upwards until its top height is higher than the top height of the lower placement seat 7. Position the arc-shaped connecting rod 81 using the positioning pin 711 to fix the position of the upper placement seat 8. With the lap groove facing upwards, place the upper longitudinal reinforcement 104 between the two upper placement seats 8, allowing for easy welding of the upper longitudinal reinforcement 104 to the reinforcement ring 101. After sequentially welding the reinforcement ring 101 to the outer longitudinal reinforcement 103 and the lower longitudinal reinforcement 105, the inner longitudinal reinforcement 102 to the reinforcement ring 101, and the upper longitudinal reinforcement 104 to the reinforcement ring 101, the welding operation of the entire precast box girder reinforcement skeleton is completed.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated box girder reinforcement framework welding tool, comprising a plurality of transverse supports (1), two longitudinal support rods (2) and two placement rods (3) are connected between the plurality of transverse supports (1), the two longitudinal support rods (2) are located on both sides of the top of the transverse support (1), and the two placement rods (3) are located at the bottom of the transverse support (1), characterized in that: The transverse support (1) at both ends is provided with a plurality of supporting blocks (4) for placing outside longitudinal steel bars (103), and the side of the two longitudinal support rods (2) close to each other is provided with a plurality of fixing seats (5) for fixing steel rings (101) along the length direction of the longitudinal support rod (2), and the top of the placing rod (3) is provided with a placing groove for placing the steel ring (101) along the length direction of the placing rod (3), and the longitudinal support rod (2) is further provided with a limiting mechanism (6) for limiting the position of the inside longitudinal steel bar (102). The limiting mechanism (6) comprises a first positioning seat (61) and a second positioning seat (62), the first positioning seat (61) is provided with a insertion hole for the inside longitudinal steel bar (102) to pass through, and the second positioning seat (62) is provided with a clamping groove for clamping the inside longitudinal steel bar (102).

2. The prefabricated box girder steel reinforcement framework welding tooling according to claim 1, characterized in that, The top of the longitudinal support rod (2) is provided with a limiting sliding groove (21) along the length direction of the longitudinal support rod (2), and the first positioning seat (61) and the second positioning seat (62) are provided with a sliding seat (63), and the sliding seat (63) is slidingly arranged in the limiting sliding groove (21).

3. The prefabricated box girder reinforcement cage welding tooling according to claim 1 or 2, characterized in that, The second positioning seat (62) comprises a sliding part (621) and a turnover part (622), the top of the sliding part (621) is provided with a mounting groove (6211), and the turnover part (622) is hingedly arranged on the mounting groove (6211) and can be fitted with the bottom wall of the mounting groove (6211).

4. The prefabricated box girder steel reinforcement framework welding tooling according to claim 2, characterized in that, One end of the longitudinal support rod (2) extends to the outside of the transverse support (1), and the first positioning seat (61) and the second positioning seat (62) can slide to the end of the longitudinal support rod (2) extending to the outside of the transverse support (1).

5. The prefabricated box girder reinforcement cage welding tooling as claimed in claim 1, wherein, The side of the transverse support (1) away from each other is provided with a lower placing seat (7), and the top of the lower placing seat (7) is provided with a plurality of lap grooves for placing the lower bottom longitudinal steel bar (105) along the length direction of the lower placing seat (7).

6. The prefabricated box girder reinforcement cage welding tooling as claimed in claim 5, wherein, The side of the lower placing seat (7) is hingedly provided with an upper placing seat (8), and the upper placing seat (8) is provided with a plurality of lap grooves for placing the upper bottom longitudinal steel bar (104) along the length direction of the upper placing seat (8).

7. The prefabricated box girder steel reinforcement framework welding tooling according to claim 6, characterized in that, The upper placing seat (8) is provided with an arc-shaped connecting rod (81), the lower placing seat (7) is provided with a hinged seat (71), the arc-shaped connecting rod (81) is rotatably connected to the hinged seat (71) through a rotating shaft (82), and the hinged seat (71) is provided with a positioning pin (711) for fixing the position of the arc-shaped connecting rod (81).

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