Pile foundation reinforcement cage welding device

Abstract

The utility model belongs to the technical field of reinforcing cage welding, specifically provide a pile foundation reinforcing cage welding device, including device body, welding assembly and flue gas collection subassembly, adjusting lever is used for adjusting the horizontal position of welding assembly, makes welding assembly close to the reinforcing cage of waiting to weld. Welding assembly includes sliding seat, drive cylinder, welding torch and follower. Flue gas collection subassembly includes inner cover and outer cover. Inner cover can follow welding torch and move up and down, most of welding fume will be collected by inner cover and is transported to processing equipment through first flue gas delivery pipe. A small part of the escaped welding fume is collected through the outer cover and the second flue gas delivery pipe and transported to the processing equipment. The outer cover has an arc surface that matches the shape of the reinforcing cage, which helps to improve the collection effect of flue gas and reduce the amount of flue gas escaping. The inner cover and the outer cover work together to solve the problem of excessive flue gas escaping and poor flue gas collection effect during reinforcing cage welding in the prior art.

Description

Technical Field

[0001] This application belongs to the field of steel cage welding technology, and more specifically, relates to a welding device for pile foundation steel cages. Background Technology

[0002] Drilled cast-in-place piles are a commonly used type of pile foundation. They are piles made by drilling holes in the soil on-site using machinery, placing a steel cage inside, and then pouring concrete into the holes.

[0003] The reinforcing cage for pile foundations consists of three parts: reinforcing rings, main bars, and stirrups, which are typically welded on-site. Because the stirrups and main bars have numerous weld points and require a large amount of welding work, manual welding results in long welding times and delays in the construction schedule. Therefore, automated welding equipment for reinforcing cages is now widely used, and when combined with equipment for spiral-wound stirrups, it can greatly improve the efficiency of reinforcing cage fabrication.

[0004] Welding generates fumes, and since the rebar cage is fabricated in an open environment, the fumes can spread into the environment, causing air pollution and violating environmental protection policies. Therefore, fume collection and treatment are necessary. Current technologies for fume collection utilize fume collection hoods and negative pressure fans. The fume collection hood is positioned above the welding torch, and the negative pressure fan and ductwork create negative pressure suction to collect and transport the fumes to fume treatment equipment. However, because the pile foundation rebar cage is a horizontally placed cylinder, and the welding points are at the connection between the stirrups and main reinforcement bars, existing fume collection hoods are typically square or circular structures. To avoid interference with the rebar cage, the hoods are often positioned too high, resulting in a significant amount of escaping fumes and ineffective fume collection. Utility Model Content

[0005] Based on the above-mentioned technical problems, this application provides a welding device for pile foundation steel cages to solve the technical problem that the fumes generated during welding are not easy to collect in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is: to provide a welding device for pile foundation reinforcement cages, comprising: The device body is located on one side of the reinforcing cage, and an adjusting rod that can move horizontally is provided on the side of itself adjacent to the reinforcing cage. The end of the adjusting rod away from the device body is provided with a mounting plate, and the mounting plate is provided with a guide rail in the vertical direction. A welding assembly includes a sliding seat, a drive cylinder, a welding torch, and a follower. The sliding seat is slidably fitted onto the guide rail. The drive cylinder has a drive rod arranged parallel to the adjusting rod. The welding torch and the follower are respectively disposed on the drive rod. The follower has a groove that engages with a main rib. A flue gas collection assembly includes an inner shroud and an outer shroud. The inner shroud is movably positioned above the welding torch and the follower, and has a downward-facing first flue gas inlet. A first flue gas delivery pipe is connected to the upper part of the inner shroud. The outer shroud is positioned above the inner shroud and has a second flue gas inlet on its bottom and on one side adjacent to the reinforcing cage. The side of the outer shroud adjacent to the reinforcing cage is an arc-shaped surface. The lower part of the outer shroud extends at least to the upper stop point of the inner shroud, and a second flue gas delivery pipe is connected to the upper part of the outer shroud.

[0007] In one possible implementation, the pile foundation reinforcement cage welding device further includes a guide assembly, the guide assembly comprising: Two guide arms are positioned vertically opposite each other on the mounting plate, a sliding seat is located between the two guide arms, and an outer cover is fitted over the outer side of the upper guide arm; and Two guide wheels are provided one-to-one at one end of the guide arm near the steel cage, and the guide wheels have grooves for accommodating stirrups.

[0008] In one possible implementation, the guide arm has a mounting shaft parallel to the axis of the reinforcing cage, and the guide wheel is movably disposed on the mounting shaft.

[0009] In one possible implementation, the upper guide arm has a vertically penetrating guide hole, the inner cover has a guide rod that slides with the guide hole, and the top end of the guide rod has a stop portion with a diameter larger than the diameter of the guide hole.

[0010] In one possible implementation, at least one of the lower surface of the stop and the upper surface of the guide arm that abuts against the stop is provided with a rubber buffer layer.

[0011] In one possible implementation, the first flue gas conveying pipe has a flexible corrugated pipe section that can extend and retract vertically.

[0012] In one possible implementation, the pile foundation reinforcement cage welding device further includes two inductive switches, which are arranged opposite each other on the mounting plate and correspond to the upper and lower stop points of the sliding seat, respectively.

[0013] In one possible implementation, the opening of the first flue gas inlet is angled downward toward the reinforcing cage.

[0014] In one possible implementation, the bottom of the device body is provided with casters.

[0015] In one possible implementation, the drive rod is provided with an adjustment bracket, and the welding torch is disposed on the adjustment bracket.

[0016] Compared with the prior art, the beneficial effects of the pile foundation reinforcement cage welding device provided in this application are: The pile foundation reinforcement cage welding device provided in this application includes a device body, a welding assembly, and a fume collection assembly. An adjusting rod is used to adjust the horizontal position of the welding assembly, bringing it closer to the reinforcement cage to be welded. The welding assembly includes a sliding seat, a drive cylinder, a welding torch, and a follower component. The extension of the drive cylinder brings the welding torch and follower component closer to the reinforcement cage. During the rotation of the reinforcement cage, the main reinforcement bars and the follower component engage, driving the welding torch and sliding seat to move upwards as a whole, allowing the welding torch to follow the reinforcement cage and weld the weld points. After welding is completed, the drive cylinder retracts the welding torch and follower component, and under the action of gravity, the sliding seat automatically slides down to the lower stop position, completing the welding operation for one weld point.

[0017] During welding, the welding torch generates welding fumes. This application includes an inner shroud above the welding torch, which moves up and down with the torch. Most of the welding fumes are collected by the inner shroud and transported to the treatment equipment via a first fume delivery pipe. A small portion of the escaping welding fumes is collected by an outer shroud and a second fume delivery pipe and also transported to the treatment equipment. The outer shroud has an arc-shaped surface adapted to the shape of the reinforcing cage, which helps improve fume collection and reduce fume escape. The inner shroud moves upward with the welding torch during welding, maintaining a suitable distance from it at all times, further enhancing its fume collection efficiency. The combined effect of the inner and outer shrouds solves the problem of excessive fume escape and poor fume collection during reinforcing cage welding in existing technologies. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram illustrating the use of the pile foundation reinforcement cage welding device provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 A partial cross-sectional view of the pile foundation reinforcement cage welding device provided in the embodiments of this application under the condition of use; Figure 4 This is a schematic diagram of the structure of the pile foundation reinforcement cage welding device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the mounting plate, welding assembly, and guide assembly in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the mounting plate and flue gas collection assembly in the embodiments of this application; Explanation of reference numerals in the attached figures: 10. Device body; 11. Adjusting rod; 12. Mounting plate; 13. Guide rail; 14. Moving wheel; 20. Welding assembly; 21. Sliding seat; 22. Drive cylinder; 221. Drive rod; 222. Adjusting bracket; 23. Welding torch; 24. Follower; 30. Flue gas collection assembly; 31. Inner cover; 311. Guide rod; 312. Stop; 32. Outer cover; 33. First flue gas conveying pipe; 331. Flexible corrugated pipe section; 34. Second flue gas conveying pipe; 40. Guide assembly; 41. Guide arm; 411. Mounting shaft; 42. Guide wheel; 50. Inductive switch. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] Please refer to the following: Figures 1 to 6 The following describes the pile foundation reinforcement cage welding device provided in the embodiments of this application.

[0026] Please see Figures 1 to 6 The pile foundation reinforcement cage welding device provided in this application includes a device body 10, a welding assembly 20, and a fume collection assembly 30. The device body 10 is located on one side of the reinforcement cage, and an adjusting rod 11 that is horizontally movable is provided on the side adjacent to the reinforcement cage. An installation plate 12 is provided at the end of the adjusting rod 11 away from the device body 10, and a guide rail 13 is provided on the installation plate 12 in a vertical direction. The welding assembly 20 includes a sliding seat 21, a drive cylinder 22, a welding torch 23, and a follower 24. The sliding seat 21 is slidably fitted onto the guide rail 13. The drive cylinder 22 has a drive rod 221 arranged parallel to the adjusting rod 11. The welding torch 23 and the follower 24 are respectively located on the drive rod 221, and the follower 24 has a function of engaging with the main reinforcement. The matching slot; the fume collection assembly 30 includes an inner cover 31 and an outer cover 32. The inner cover 31 is movably disposed above the welding torch 23 and the follower 24, and has a downward-facing first fume inlet. The upper part of the inner cover 31 is connected to a first fume delivery pipe 33. The outer cover 32 is disposed above the inner cover 31, and has a second fume inlet on its bottom and on one side adjacent to the reinforcing cage. The side of the outer cover 32 adjacent to the reinforcing cage is an arc-shaped surface. The lower part of the outer cover 32 extends at least to the upper stop position of the inner cover 31. The upper part of the outer cover 32 is connected to a second fume delivery pipe 34.

[0027] Compared with the prior art, the beneficial effects of the pile foundation reinforcement cage welding device provided in this application embodiment are: The pile foundation reinforcement cage welding device provided in this application includes a device body 10, a welding assembly 20, and a fume collection assembly 30. An adjusting rod 11 is used to adjust the horizontal position of the welding assembly 20, bringing it closer to the reinforcement cage to be welded. The welding assembly 20 includes a sliding seat 21, a drive cylinder 22, a welding torch 23, and a follower 24. The extension of the drive cylinder 22 brings the welding torch 23 and the follower 24 closer to the reinforcement cage. During the rotation of the reinforcement cage, the main reinforcement bars and the follower 24 engage, driving the welding torch 23 and the sliding seat 21 to move upwards as a whole, allowing the welding torch 23 to follow the reinforcement cage and weld the weld points. After welding is completed, the drive cylinder 22 retracts the welding torch 23 and the follower 24, and under gravity, the sliding seat 21 automatically slides down to the lower stop position, completing one weld point welding operation.

[0028] During welding, the welding torch 23 generates welding fumes. In this embodiment, an inner cover 31 is provided above the welding torch 23. The inner cover 31 can move up and down with the welding torch 23. Most of the welding fumes are collected by the inner cover 31 and transported to the treatment equipment through the first fume delivery pipe 33. A small portion of the escaping welding fumes is collected through the outer cover 32 and the second fume delivery pipe 34 and transported to the treatment equipment. The outer cover 32 has an arc-shaped surface adapted to the shape of the reinforcing cage, which helps to improve the fume collection effect and reduce the amount of fume escaping. The inner cover 31 moves upward with the welding torch 23 during welding, always maintaining a suitable distance from the welding torch 23, which helps to improve the fume collection effect of the inner cover 31. The inner cover 31 and the outer cover 32 work together to solve the problem of excessive fume escaping and poor fume collection effect during welding of reinforcing cages in the prior art.

[0029] In practical use, the pile foundation reinforcement cage welding device is set on the discharge side of the reinforcement cage winding and forming equipment. The winding and forming equipment is used to spirally wind the stirrups onto the main reinforcement bars, and then the pile foundation reinforcement cage welding equipment welds the stirrups and main reinforcement bars together. Since the number of reinforcing rings is small and the number of weld points between them and the main reinforcement bars is also small, the reinforcing rings and main reinforcement bars can be welded together manually.

[0030] The pile foundation reinforcement cage welding device provided in this application embodiment can be obtained by adding a flue gas collection component 30 to the existing automated reinforcement cage welding equipment. There are no restrictions on the specific specifications and models of the automated reinforcement cage welding equipment, as long as it meets the usage requirements.

[0031] The main body 10 of the device includes a welding machine, a control panel, a mobile vehicle, a drive motor, and other major components. The drive motor controls the extension and retraction of the adjusting rod 11 to adjust the relative position of the welding assembly 20 and the reinforcing cage. The end of the adjusting rod 11 is provided with a mounting plate 12, on which a vertical guide rail 13 is provided. The sliding seat 21 can move up and down along the guide rail 13. The cross-sectional shape of the guide rail 13 can be circular, square, trapezoidal, etc., and one or more guide rails 13 can be provided as needed. The bottom of the main body 10 is provided with casters 14, which can move along the axial direction of the reinforcing cage.

[0032] The welding assembly 20 includes a sliding seat 21, a drive cylinder 22, a welding torch 23, and a follower 24. The drive cylinder 22 is fixedly mounted on the sliding seat 21. The cylinder rod of the drive cylinder 22 forms a drive rod 221. The welding torch 23 and the follower 24 are mounted on the drive rod 221. The drive rod 221 can drive the welding torch 23 and the follower 24 to move closer to or away from the reinforcing cage.

[0033] During welding, the drive rod 221 of the drive cylinder 22 extends, bringing the welding torch 23 and the follower 24 closer to the reinforcing cage. As the reinforcing cage rotates upward, the main reinforcing bars can engage with the follower 24. The rotation of the reinforcing cage itself acts as a power source, driving the sliding seat 21 upward along the guide rail 13. The drive cylinder 22 ensures that the follower 24 presses against the main reinforcing bars. The welding torch 23 follows the welding point, welding the main reinforcing bars and stirrups. After welding, the drive cylinder 22 controls the drive rod 221 to retract, the follower 24 disengages from the main reinforcing bars, and under gravity, the sliding seat 21 falls back to its lower stop position.

[0034] The follower 24 can be L-shaped or similar, as long as it can limit the movement of the main rib. To facilitate the adjustment of the position and angle of the welding torch 23, an adjustment bracket 222 is provided on the drive rod 221, and the welding torch 23 is mounted on the adjustment bracket 222. The adjustment bracket 222 can fine-tune the installation position of the welding torch 23.

[0035] The specific structural form of the adjusting bracket 222 is not limited. For example, the adjusting bracket 222 can be directly adopted as shown in the figure. Figure 5 The welding torch 23 mounting bracket shown in the prior art can hold the welding torch 23 and adjust the welding angle in the x, y, and z directions.

[0036] The fume collection assembly 30 is used to collect the fumes generated during welding by the welding torch 23. The fume collection assembly 30 includes an inner cover 31, an outer cover 32, a first fume delivery pipe 33, and a second fume delivery pipe 34. The inner cover 31 is located above the welding torch 23 and can move upwards with the welding torch 23 as it moves with the reinforcing cage, maintaining a suitable distance between the welding torch 23 and the inner cover 31 to improve the fume collection effect. The movement of the inner cover 31 can be driven by a separate drive device, such as a cylinder or an electric lifting rod. Alternatively, the lower part of the inner cover 31 abuts against the follower 24, using the force of the follower 24 as it rises to drive the inner cover 31 upwards. After welding, the follower 24 and the inner cover 31 descend under their own gravity.

[0037] Since the inner cover 31 is positioned above the welding torch 23 and can move up and down, in order to ensure that the inner cover 31 can move smoothly, the first flue gas conveying pipe 33 can be a telescopic pipe formed by combining multiple pipes, or a flexible corrugated pipe section 331 that can move up and down can be provided on the first flue gas conveying pipe 33.

[0038] The outer cover 32 is larger in size and is used to collect the flue gas escaping from the inner cover 31. The outer cover 32 is larger in size and has an arc-shaped surface that fits the shape of the steel cage on one side, so as to collect the diffused flue gas to a greater extent.

[0039] The opening direction of the first flue gas inlet can be vertically downward or obliquely downward towards the steel cage.

[0040] The inner cover 31 and the outer cover 32 can be made by welding aluminum alloy plates and thin steel plates. The first flue gas conveying pipe 33 and the second flue gas conveying pipe 34 are respectively equipped with negative pressure fans. The negative pressure suction force generated by the fans is used to draw the welding fumes to the flue gas treatment equipment.

[0041] It is important to note that the negative pressure suction force of the inner shroud 31 should be designed to be relatively large to improve the collection effect of flue gas. The outer shroud 32 is used to collect the flue gas escaping from the inner shroud 31. Due to the larger size of the outer shroud 32, if the negative pressure suction force is also set to be large, a higher power negative pressure fan will be required, thus increasing the equipment cost. In actual use, the negative pressure suction force of the outer shroud 32 can be relatively small. The high-temperature flue gas will rise to the top of the outer shroud 32 under the action of heat, achieving a good collection effect as well.

[0042] There are no restrictions on the specific suction pressure values ​​of the inner cover 31 and the outer cover 32; users can set them according to their actual needs. The higher the suction power, the better the smoke collection effect, but the higher the cost of the equipment required will also be.

[0043] Please see Figure 2 , Figure 4 and Figure 5 In some possible embodiments, the pile foundation reinforcement cage welding device further includes a guide assembly 40, which includes guide arms 41 and guide wheels 42. Two guide arms 41 are positioned vertically opposite each other on the mounting plate 12, a sliding seat 21 is located between the two guide arms 41, and an outer cover 32 covers the outer side of the upper guide arm 41. Two guide wheels 42 are correspondingly positioned at the ends of the guide arms 41 adjacent to the reinforcement cage, and each guide wheel 42 has a groove for accommodating stirrups. The guide wheels 42 are used to press the stirrups and guide and position them, ensuring accurate weld point positioning.

[0044] Because the stirrups are spirally wound, the two guide wheels 42 are not perfectly aligned vertically. The pitch of the stirrups on different steel cages is also different. In order to facilitate the adjustment of the horizontal position of the guide wheels 42, the guide arm 41 has a mounting shaft 411 parallel to the axis of the steel cage. The guide wheels 42 are movably mounted on the mounting shaft 411 and locked and limited by fasteners such as screws, limit rings, and clamps.

[0045] The guide arm 41 is fixed to the mounting plate 12 by screws, and the guide arm 41 can adjust its installation position as needed.

[0046] Please see Figure 4 and Figure 6In some possible embodiments, the upper guide arm 41 has a guide hole that extends vertically through it, and the inner cover 31 has a guide rod 311 that slides with the guide hole. In order to prevent the guide rod 311 from slipping, the top end of the guide rod 311 has a stop portion 312, the diameter of which is larger than the diameter of the guide hole.

[0047] In order to reduce the impact force and noise of the stop part 312 and the guide arm 41 when they fall, at least one of the lower surface of the stop part 312 and the upper surface of the guide arm 41 that is used to abut against the stop part 312 is provided with a rubber buffer layer, which plays a role in buffering and shock absorption.

[0048] Please see Figure 4 and Figure 5 In order to facilitate the detection of the upper and lower stop positions of the sliding seat 21, the pile foundation steel cage welding device also includes two inductive switches 50. The two inductive switches 50 are arranged opposite each other on the mounting plate 12 and correspond to the upper and lower stop positions of the sliding seat 21, respectively.

[0049] When the sliding seat 21 moves to the lower stop point, the lower inductive switch 50 generates an inductive signal and sends the signal to the controller. The controller controls the drive rod 221 of the drive cylinder 22 to extend, causing the welding torch 23 and the follower 24 to extend. When the sliding seat 21 moves to the upper stop point, the upper inductive switch 50 generates an inductive signal and sends the signal to the controller. The controller controls the drive rod 221 of the drive cylinder 22 to retract, causing the welding torch 23 and the follower 24 to retract.

[0050] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding device for pile foundation steel cages, characterized in that, include: The device body (10) is located on one side of the steel cage, and an adjusting rod (11) that can move horizontally is provided on the side of itself adjacent to the steel cage. The end of the adjusting rod (11) away from the device body (10) is provided with a mounting plate (12), and the mounting plate (12) is provided with a guide rail (13) in the vertical direction. The welding assembly (20) includes a sliding seat (21), a drive cylinder (22), a welding torch (23), and a follower (24). The sliding seat (21) is slidably fitted onto the guide rail (13). The drive cylinder (22) has a drive rod (221) arranged parallel to the adjusting rod (11). The welding torch (23) and the follower (24) are respectively disposed on the drive rod (221). The follower (24) has a groove for engaging with the main rib. The flue gas collection assembly (30) includes an inner cover (31) and an outer cover (32). The inner cover (31) is movably disposed above the welding torch (23) and the follower (24) and has a downward-facing first flue gas inlet. The upper part of the inner cover (31) is connected to a first flue gas conveying pipe (33). The outer cover (32) is disposed above the inner cover (31) and has a second flue gas inlet at its bottom and on one side adjacent to the reinforcing cage. The side of the outer cover (32) adjacent to the reinforcing cage is an arc-shaped surface. The lower part of the outer cover (32) extends at least to the upper stop position of the inner cover (31). The upper part of the outer cover (32) is connected to a second flue gas conveying pipe (34).

2. The pile foundation reinforcement cage welding device according to claim 1, characterized in that, The pile foundation reinforcement cage welding device further includes a guide assembly (40), the guide assembly (40) comprising: Two guide arms (41) are positioned vertically opposite each other on the mounting plate (12), the sliding seat (21) is located between the two guide arms (41), and the outer cover (32) covers the outside of the upper guide arm (41); and Two guide wheels (42) are provided one-to-one at one end of the guide arm (41) near the steel cage, and the guide wheels (42) have wheel grooves for accommodating stirrups.

3. The pile foundation reinforcement cage welding device according to claim 2, characterized in that, The guide arm (41) has an installation shaft (411) parallel to the axis of the steel cage, and the guide wheel (42) is movably disposed on the installation shaft (411).

4. The pile foundation reinforcement cage welding device according to claim 2, characterized in that, The guide arm (41) located above has a guide hole that runs vertically through it. The inner cover (31) has a guide rod (311) that slides with the guide hole. The top end of the guide rod (311) has a stop (312), and the diameter of the stop (312) is larger than the diameter of the guide hole.

5. The pile foundation reinforcement cage welding device according to claim 4, characterized in that, At least one of the lower surface of the stop (312) and the upper surface of the guide arm (41) that abuts against the stop (312) is provided with a rubber buffer layer.

6. The pile foundation reinforcement cage welding device according to claim 1, characterized in that, The first flue gas conveying pipe (33) has a flexible corrugated pipe section (331) that can extend and retract vertically.

7. The pile foundation reinforcement cage welding device according to claim 1, characterized in that, The pile foundation steel cage welding device also includes two induction switches (50), which are arranged opposite each other on the mounting plate (12) and correspond to the upper and lower stop points of the sliding seat (21) respectively.

8. The pile foundation reinforcement cage welding device according to claim 1, characterized in that, The opening of the first flue gas inlet is angled downward toward the reinforcing cage.

9. The pile foundation reinforcement cage welding device according to claim 1, characterized in that, The bottom of the device body (10) is provided with casters (14).

10. The pile foundation reinforcement cage welding device according to claim 1, characterized in that, The drive rod (221) is provided with an adjustment bracket (222), and the welding torch (23) is provided on the adjustment bracket (222).

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