Welding trolley

Abstract

The welding trolley comprises a trolley platform, which moves on a single side of the inner wall of a rectangular air pipe; a driving assembly, which moves on the edge of the air pipe flange, and is used to drive the trolley platform to move synchronously; a locking assembly, which is connected between the driving assembly and the trolley platform, and is used to limit the trolley platform on the single side of the rectangular air pipe and to limit the driving assembly on the edge of the air pipe flange; and a welding device, which is arranged on the trolley platform, and is used to weld the single-side joint between the rectangular air pipe and the air pipe flange. Through the cooperation of the trolley platform, the driving assembly, the locking assembly and the welding device, the welding of the single-side joint is completed in the process that the driving assembly drives the trolley platform to move synchronously, and the single-side welding can be conveniently and flexibly completed at low cost.

Description

Technical Field

[0001] This utility model relates to the field of duct welding technology, and in particular to welding trolleys. Background Technology

[0002] Air ducts are piping systems used for air transport and distribution. Rectangular metal air ducts are widely used. When connecting multiple sections of a rectangular air duct using air duct flanges, the air duct flanges need to be welded to both ends of the rectangular air duct first.

[0003] When welding duct flanges, the traditional method is to manually hold the welding gun and flange, fix the flange to the duct at several welding points, and then weld the joint. This traditional operation method is difficult to meet the current production needs.

[0004] Currently, existing technologies, such as the Chinese patent with publication number CN112518226A, disclose an intelligent flange-pipe welding system. This system completes intelligent welding through the cooperation of multiple sets of equipment. Although it has a high degree of intelligence, the system composition is relatively complex and the cost of use is high.

[0005] For example, Chinese patent CN222176449U discloses an easy-to-weld trolley for welding steel pipes and flanges. Although this welding trolley is simple, it is not very suitable for welding rectangular ducts and duct flanges, and it is difficult to achieve effective welding results.

[0006] For example, Chinese patent CN222806396U discloses an automatic welding trolley for reinforcing rings, which completes welding while moving along the reinforcing ring. Although this welding trolley can move along the reinforcing ring to complete the welding, it is difficult to move continuously when facing the right angle of a rectangular duct, thus failing to effectively meet the usage requirements.

[0007] Therefore, in order to address the above problems and to facilitate convenient, flexible, and low-cost single-sided welding, a welding trolley is proposed. Utility Model Content

[0008] In view of the above situation and to overcome the defects of the prior art, this utility model provides a welding carriage, including:

[0009] A trolley platform that moves along one side of the inner wall of a rectangular duct.

[0010] A drive assembly that moves along the edge of the duct flange and is used to drive the trolley platform to move synchronously.

[0011] A locking assembly is provided, wherein the drive assembly is connected to the trolley platform via the locking assembly, and the locking assembly is used to restrict the trolley platform to one side of the rectangular duct and to restrict the drive assembly to the edge of the duct flange;

[0012] A welding device is provided on the trolley platform and is used to weld the single-sided joint between the rectangular duct and the duct flange.

[0013] More preferably, the duct flange is fitted onto the port of the rectangular duct, the plane of the edge of the duct flange is flush with the port of the rectangular duct, and the joint forms the single-sided seam.

[0014] More preferably, the trolley platform includes a base and a plurality of wheels, at least two of the wheels are fixedly installed on the side of the base corresponding to the single-sided joint and move on the plane of the edge of the duct flange, and at least two other wheels are fixedly installed on the lower surface of the base corresponding to the single-sided joint and move on the side wall of the rectangular duct.

[0015] More preferably, the trolley platform further includes a balance column, which is fixedly installed on the lower surface of the base, and the bottom end of the balance column is fixedly installed with the traveling wheels for moving on the side wall of the rectangular air duct.

[0016] More preferably, the locking assembly includes a cylinder and a support seat, the cylinder is fixedly mounted on the upper surface of the base, the support seat is fixedly mounted on the movable end of the cylinder, and the support seat is used to mount the drive assembly.

[0017] More preferably, the drive assembly includes a motor and a drive wheel, the motor is fixedly mounted on the support, the output end of the motor passes through the support and is fixedly mounted to the drive wheel, and the drive wheel moves on the edge of the duct flange.

[0018] More preferably, the welding device includes a fixed base, a support rod, a connecting clamp, and a welding torch. The fixed base is fixedly mounted on the cylinder, the support rod is fixedly mounted on the fixed base, and the welding torch is fixedly mounted on the support rod via the connecting clamp.

[0019] More preferably, the number of welding devices is two, and the two welding devices are symmetrically arranged on the trolley platform.

[0020] More preferably, a limit switch is fixedly installed on the lower surface of the trolley platform.

[0021] More preferably, a protective cover is fixedly installed on the trolley platform, a movable door is hinged to one side of the protective cover, and an observation window is formed on the protective cover.

[0022] Compared with the prior art, this utility model completes the welding of a single-sided seam by cooperating with a trolley platform, a drive component, a locking component and a welding device, while the drive component drives the trolley platform to move synchronously. The operation is simple and efficient, and it can complete the single-sided welding conveniently, flexibly and at low cost. Attached Figure Description

[0023] Figure 1 This is a connection diagram of this utility model.

[0024] Figure 2 This is a frontal axonometric structural schematic diagram of this utility model.

[0025] Figure 3 This is a front view structural diagram of this utility model.

[0026] Figure 4 This is a bottom view of the structure of this utility model.

[0027] Figure 5 This is a schematic diagram illustrating the welding application of this utility model.

[0028] Figure 6 This is a schematic diagram of the structure of the two welding devices of this utility model.

[0029] Figure 7 This is a top view schematic diagram of the two welding devices of this utility model.

[0030] Figure 8 This is a schematic diagram of the protective cover structure of this utility model.

[0031] Explanation of the labels in the diagram:

[0032] 1. Cart platform; 2. Drive assembly; 3. Locking assembly; 4. Welding device; 5. Rectangular duct; 6. Duct flange; 7. Single-sided joint; 8. Base; 9. Wheels; 10. Balance column; 11. Cylinder; 12. Bearing seat; 13. Motor; 14. Drive wheel; 15. Fixed seat; 16. Support rod; 17. Connecting clamp; 18. Welding torch; 19. Limit switch; 20. Protective cover; 21. Movable door. Detailed Implementation

[0033] The duct flange 6 is usually made of angle steel welded together. Its detailed mechanical structure and working principle are existing technologies. When welding the duct flange 6, the duct flange 6 is first fixed to the rectangular duct 5, and then the single-sided joint 7 is welded. The duct flange 6 can be fixed by welding several points to the rectangular duct 5, such as welding the four corner points, or by fixing the duct flange 6 to the rectangular duct 5 with a support device, etc. Obviously, the fixing methods that can be adopted before welding are not limited to the above-mentioned existing technologies, so they will not be elaborated in this article.

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0035] Depend on Figures 1 to 8 The present invention relates to a welding carriage, comprising:

[0036] Cart platform 1 moves on one side of the inner wall of rectangular duct 5;

[0037] Drive component 2 moves on the edge of duct flange 6 and is used to drive the trolley platform 1 to move synchronously.

[0038] The locking assembly 3 connects the drive assembly 2 and the trolley platform 1. The locking assembly 3 is used to restrict the trolley platform 1 to one side of the rectangular duct 5 and to restrict the drive assembly 2 to the edge of the duct flange 6.

[0039] Welding device 4 is set on trolley platform 1 and is used to weld the single-sided joint 7 between rectangular air duct 5 and air duct flange 6.

[0040] In these embodiments, the welding device 4 is adjusted to a suitable position according to the specifications of the rectangular duct 5 and the duct flange 6, so that the welding device 4 can stably weld the single-sided joint 7 as the trolley platform 1 moves. During welding, the trolley platform 1 and the drive assembly 2 are respectively placed on the rectangular duct 5 and the duct flange 6. The locking assembly 3 allows the trolley platform 1 and the drive assembly 2 to be locked onto both sides of the single-sided joint 7. Then, the drive assembly 2 drives the trolley platform 1 to move synchronously along the single-sided joint 7, and the welding device 4 completes the welding of the single-sided joint 7. After welding one side of the rectangular duct 5, the welding trolley is removed and placed on the other side for welding. This process is repeated to gradually complete the welding of all four sides, that is, to complete the welding of the four single-sided joints 7. With the cooperation of the trolley platform 1, drive component 2, locking component 3 and welding device 4, the operation is simple and efficient, and it can complete single-sided welding conveniently, flexibly and at low cost. It not only helps to improve welding efficiency and save welding time, but also allows for flexible adjustment according to the different sizes and specifications of the duct flange 6, which helps to reduce the requirements for manual skills.

[0041] In some implementations of the welding trolley, the duct flange 6 is fitted onto the port of the rectangular duct 5, the plane of the edge of the duct flange 6 is flush with the port of the rectangular duct 5, and a single-sided joint 7 is formed at the joint.

[0042] In these embodiments, the duct flange 6, which is made of angle steel, is fitted onto the port of the rectangular duct 5, and the corner on one side of the duct flange 6 is kept flush with the edge of the port to form a single-sided joint 7 for welding, which helps to improve the ease of operation.

[0043] In some implementations of the welding trolley, the trolley platform 1 includes a base 8 and a plurality of wheels 9. At least two wheels 9 are fixedly installed on the side of the base 8 corresponding to the single-sided joint 7 and move on the plane of the edge of the duct flange 6. At least two other wheels 9 are fixedly installed on the lower surface of the base 8 corresponding to the single-sided joint 7 and move on the side wall of the rectangular duct 5.

[0044] In these implementations, such as Figure 5 As shown, the traveling wheels 9 on the side of the base 8 can be placed on the surface of the duct flange 6 for movement, and the traveling wheels 9 on the bottom of the base 8 are attached to the side wall of the rectangular duct 5 for movement. Through the cooperation of the traveling wheels 9 and the drive assembly 2, the welding trolley can be stably driven forward.

[0045] In some embodiments of the welding trolley, the trolley platform 1 also includes a balance column 10, which is fixedly installed on the lower surface of the base 8, and the bottom end of the balance column 10 is fixedly installed with a traveling wheel 9 for moving on the side wall of the rectangular air duct 5.

[0046] In these embodiments, the balance column 10 and the traveling wheels 9 thereon can improve the balance of the welding trolley and ensure that the balance column 10 moves steadily forward with the trolley platform 1, which is beneficial to improving the stability of the welding process.

[0047] In some embodiments of the welding trolley, the locking assembly 3 includes a cylinder 11 and a support 12. The cylinder 11 is fixedly mounted on the upper surface of the base 8, and the support 12 is fixedly mounted on the movable end of the cylinder 11. The support 12 is used to mount the drive assembly 2.

[0048] In some implementations of the welding trolley, the drive assembly 2 includes a motor 13 and a drive wheel 14. The motor 13 is fixedly mounted on the support 12, and the output end of the motor 13 passes through the support 12 and is fixedly mounted to the drive wheel 14. The drive wheel 14 moves on the edge of the duct flange 6.

[0049] In these implementations, such as Figure 2 As shown, cylinder 11 is mounted on base 8, and support seat 12 is mounted via the telescopic rod of cylinder 11 to drive support seat 12 closer to or further away from base 8, thereby driving drive wheel 14 to move. When installing the welding carriage, base 8 is placed on one side of rectangular duct 5, and then cylinder 11 drives drive wheel 14 to engage with the edge of duct flange 6, allowing the welding carriage to be held on both sides of the single-sided joint 7. Motor 13 then drives drive wheel 14 on the edge, which, in conjunction with traveling wheels 9, moves the welding carriage. Through the cooperation of locking assembly 3 and drive assembly 2, the welding carriage can be quickly loaded and unloaded, and its movement can be stably driven, making operation more convenient and efficient. It should be understood that the detailed mechanical structure and working principle of cylinder 11, motor 13, etc., are existing technologies, so their detailed mechanical structure and working principle will not be elaborated in this article.

[0050] In some embodiments of the welding carriage, the welding device 4 includes a fixed seat 15, a support rod 16, a connecting clamp 17, and a welding torch 18. The fixed seat 15 is fixedly mounted on the cylinder 11, the support rod 16 is fixedly mounted on the fixed seat 15, and the welding torch 18 is fixedly mounted on the support rod 16 via the connecting clamp 17.

[0051] In these embodiments, the mounting base 15 is mounted on the cylinder 11 via connectors, such as bolts, or it can be fixed to the base 8 via a support column and bolts, and then placed on the cylinder 11. The welding torch 18 is then installed through the cooperation of the support rod 16 and the connecting clamp 17, enabling the welding torch 18 to stably weld the single-sided joint 7. Furthermore, the connecting clamp 17 includes two clamps: one clamp is fixedly mounted on the support rod 16, and the other is used to hold the welding torch 18, facilitating flexible adjustment according to production needs. It should be understood that the detailed mechanical structure and working principle of the welding torch 18 are existing technologies, so their detailed mechanical structure and working principle will not be elaborated upon in this article. The selection of the welding torch 18 model can be flexibly chosen according to the actual welding environment.

[0052] In some embodiments of the welding trolley, there are two welding devices 4, which are symmetrically arranged on the trolley platform 1.

[0053] In these implementations, such as Figure 6-7 As shown, two welding devices 4 are centrally located, with the support rods 16 arranged symmetrically to ensure that the two welding torches 18 held by the device can be positioned accordingly, enabling rapid completion of the work when welding one side. For example, when welding one side of a rectangular duct 5, the welding carriage is first placed at one end of the single side, and then the welding carriage is driven forward while welding is performed simultaneously using the welding torch 18 at the rear of the welding carriage. When the welding carriage reaches the other end of the single side, the welding torch 18 at the rear stops working (at this time, the remaining distance of the welding carriage body is not welded). Then, the welding carriage is reversed (motor 13 drives the drive wheel 14 to reverse), and the welding torch 18 at the head of the welding carriage is started to perform welding, thereby completing the welding of the entire single-side joint 7. The welding carriage is then removed and installed on the other side, and the above welding process is repeated until all four sides of the entire duct flange 6 are welded.

[0054] In some implementations of the welding trolley, a limit switch 19 is fixedly installed on the lower surface of the trolley platform 1.

[0055] In these embodiments, by setting the limit switch 19, after the welding carriage travels along one side to the end, the strike bar of the limit switch 19 hits the inner wall of the rectangular air duct 5, thereby triggering the limit switch 19, and then shutting off the motor 13 and the welding torch 18, etc., making the operation simple and convenient.

[0056] In some embodiments of the welding trolley, a protective cover 20 is fixedly installed on the trolley platform 1, a movable door 21 is hinged to one side of the protective cover 20, and an observation window is formed on the protective cover 20.

[0057] In these embodiments, an observation window is also provided on the movable door 21 (not shown in the figure), and the arrangement of the protective cover 20, the movable door 21 and the observation window provides convenience for the operator's operation.

[0058] In addition, a control cabinet (not shown in the figure) is located next to the rectangular duct 5 and is electrically connected to the welding trolley. The operation of the welding trolley is controlled by a limit switch 19 and a series of control buttons on the control cabinet, which improves the convenience of operation. The mechanical structure and circuit working principle of the control cabinet and the limit switch 19 are existing technologies, so their detailed mechanical structure and circuit working principle will not be described in detail in this article.

[0059] In use, the welding torch 18 is adjusted to the position of the corresponding single-sided joint 7 according to the specifications of the rectangular duct 5 and the duct flange 6 to be welded. Then, the welding carriage is installed on the rectangular duct 5 through the base 8, and the drive wheel 14 is clamped on the edge of the duct flange 6 by the cylinder 11. Then, the motor 13, welding torch 18, etc. are controlled by the control cabinet to drive the welding carriage to move and weld. After moving to the end, the welding carriage is moved back and the remaining part is welded by another welding torch 18. Then, the welding carriage is installed on another single side, and the above welding process is repeated until the four single-sided joints 7 of the rectangular duct 5 are welded in sequence.

[0060] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. The above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding trolley, characterized in that include: The trolley platform (1) moves on one side of the inner wall of the rectangular air duct (5); A drive assembly (2) moves on the edge of the duct flange (6) and is used to drive the trolley platform (1) to move synchronously. Locking component (3), the drive component (2) is connected to the trolley platform (1) via locking component (3), the locking component (3) is used to restrict the trolley platform (1) on one side of the rectangular duct (5) and to restrict the drive component (2) on the edge of the duct flange (6); Welding device (4) is installed on the trolley platform (1) and is used to weld the single-sided joint (7) between the rectangular air duct (5) and the air duct flange (6).

2. The welding cart of claim 1, wherein, The duct flange (6) is fitted onto the port of the rectangular duct (5), the plane of the edge of the duct flange (6) is flush with the port of the rectangular duct (5), and the joint forms the single-sided seam (7).

3. The welding cart of claim 1, wherein, The trolley platform (1) includes a base (8) and a number of wheels (9). At least two wheels (9) are fixedly installed on the side of the base (8) corresponding to the single-sided joint (7) and move on the plane of the edge of the duct flange (6). At least two other wheels (9) are fixedly installed on the lower surface of the base (8) corresponding to the single-sided joint (7) and move on the side wall of the rectangular duct (5).

4. The welding cart of claim 3, wherein, The trolley platform (1) also includes a balance column (10), which is fixedly installed on the lower surface of the base (8). The bottom end of the balance column (10) is fixedly installed with the walking wheel (9) for moving on the side wall of the rectangular air duct (5).

5. The welding cart of claim 3, wherein, The locking assembly (3) includes a cylinder (11) and a support seat (12). The cylinder (11) is fixedly installed on the upper surface of the base (8), and the support seat (12) is fixedly installed on the movable end of the cylinder (11). The support seat (12) is used to install the drive assembly (2).

6. The welding cart of claim 5, wherein, The drive assembly (2) includes a motor (13) and a drive wheel (14). The motor (13) is fixedly mounted on the support (12). The output end of the motor (13) passes through the support (12) and is fixedly mounted to the drive wheel (14). The drive wheel (14) moves on the edge of the duct flange (6).

7. The welding cart of claim 5, wherein, The welding device (4) includes a fixed base (15), a support rod (16), a connecting clamp (17), and a welding torch (18). The fixed base (15) is fixedly installed on the cylinder (11), the support rod (16) is fixedly installed on the fixed base (15), and the welding torch (18) is fixedly installed on the support rod (16) through the connecting clamp (17).

8. The welding cart of claim 1, wherein, The number of welding devices (4) is two, and the two welding devices (4) are symmetrically arranged on the trolley platform (1).

9. The welding cart of claim 1, wherein, A limit switch (19) is fixedly installed on the lower surface of the trolley platform (1).

10. The welding cart of claim 1, wherein, The trolley platform (1) is fixedly provided with a protective cover (20), one side of the protective cover (20) is hingedly provided with a movable door (21), and the protective cover (20) is formed with an observation window.

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