An auxiliary electrode welding device

Abstract

The utility model discloses a utility model relates to welding technical field, specifically relates to a kind of auxiliary electrode welding device, including base, vertical pole, height adjusting mechanism, cantilever beam, horizontal rotating mechanism, electrode holder and pitch angle adjusting mechanism.The base is the base of entire device, for providing stable support.The vertical pole is vertically fixed on the base.The height adjusting mechanism is slidably sleeved on the vertical pole, and can be fixed at its required height position by locking mechanism.One end of the cantilever beam is connected with the height adjusting mechanism by the horizontal rotating mechanism, so that the cantilever beam can be horizontally rotated around the axis of vertical pole, solve the welding operation of the electrode of current large mainly relies on pure artificial handhold or large-scale automatic equipment, and the problems of the existing labor intensity, positioning accuracy, stability, equipment cost or flexibility difference.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to an auxiliary electrode welding device. Background Technology

[0002] In fields such as heavy machinery manufacturing, shipbuilding, and large steel structure welding (e.g., bridges, building frames, and large chemical containers), processes like deep penetration welding, thick plate butt welding, or large-area surfacing welding require large electrodes with large diameters, typically exceeding 6mm, and sometimes even reaching 10mm or more, and considerable weight. Using large electrodes can significantly improve deposition efficiency and weld thickness, reduce the number of weld layers, and thus increase work efficiency.

[0003] However, current welding operations for large electrodes mainly rely on manual hand-held welding or large automated equipment, both of which have significant drawbacks. Manual hand-held welding is extremely labor-intensive, easily leading to operator fatigue and difficulty in maintaining a stable electrode posture, resulting in unstable welding quality, increased defects, and safety hazards. While large automated equipment, such as welding robots, can guarantee quality, it suffers from high investment costs, complex programming, poor flexibility, and large space requirements, making it unsuitable for single-piece, small-batch, or on-site repair operations.

[0004] Therefore, there is a current need for an auxiliary electrode welding device. This device should be able to effectively support the weight of the electrode and provide flexible and stable adjustment functions, allowing welders to focus on process parameter control, thereby significantly reducing labor intensity and improving safety and efficiency while ensuring quality. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an auxiliary electrode welding device to solve the problems of high labor intensity, poor positioning accuracy, insufficient stability, high equipment cost or poor flexibility in the current welding operation of large electrodes, which mainly relies on manual hand-held or large automated equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary electrode welding device, comprising a base, a support rod, a height adjustment mechanism, a cantilever beam, a horizontal rotation mechanism, an electrode holder, and a pitch angle adjustment mechanism.

[0007] The base serves as the foundation of the entire device, providing stable support. The upright is vertically fixed to the base. The height adjustment mechanism is slidably fitted onto the upright and can be fixed at the desired height position by a locking mechanism. One end of the cantilever beam is connected to the height adjustment mechanism via the horizontal rotation mechanism, allowing the cantilever beam to rotate horizontally about the axis of the upright. The electrode holder is mounted on the end of the cantilever beam away from the height adjustment mechanism via the pitch angle adjustment mechanism. The electrode holder includes a V-block for supporting the electrode and a clamping band for pressing and fixing the electrode within the V-block.

[0008] Furthermore, the height adjustment mechanism is a pin-type adjustment mechanism. It includes several pin holes arranged along the height direction of the upright, a clamp fitted onto the upright, and a pin that can be inserted into the hole on the clamp and the corresponding pin hole on the upright. Height adjustment and locking can be completed by pulling out the pin, sliding the clamp to the desired height, and then inserting the pin again.

[0009] Furthermore, the horizontal rotation mechanism employs a slewing bearing. One ring of the slewing bearing is fixedly connected to the height adjustment mechanism, and the other ring is fixedly connected to one end of the cantilever beam. The slewing bearing enables smooth and stable rotation of the cantilever beam in the horizontal plane.

[0010] Furthermore, the pitch angle adjustment mechanism includes a hinged connection consisting of a first ear plate assembly and a second ear plate assembly. The first ear plate assembly is fixedly connected to the end of the cantilever beam, and the second ear plate assembly is fixedly connected to the base of the electrode holder, with the second ear plate assembly inserted into the gap of the first ear plate assembly. Aligned arc-shaped adjustment holes are correspondingly provided on the first and second ear plate assemblies. By inserting angle adjustment bolts and locking them with nuts, the pitch angle of the electrode holder can be fixed. Loosening the nuts allows for adjustment of the pitch angle.

[0011] Furthermore, to facilitate quick tightening and loosening of the electrodes, a quick-release wrench is installed on the clamping band. Operating the quick-release wrench tightens or loosens the clamping band.

[0012] Furthermore, in order to increase the stability of the device and prevent it from tipping over when holding heavy electrodes, several counterweights are provided on the base at the end away from the upright.

[0013] Furthermore, to facilitate the movement and positioning of the entire device, the bottom of the base is equipped with casters with brakes, and one end of the base is also equipped with a push handle.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: This invention fundamentally avoids the problems of extremely high labor intensity, difficulty in guaranteeing positioning accuracy, and safety hazards caused by purely manual hand-held methods, by using a mechanical structure to bear the entire weight of the electrode. At the same time, it also effectively avoids the disadvantages of large-scale automated equipment, such as high investment costs, complex structures, large footprints, and potential lack of adaptability to specific working conditions. This invention has a relatively simple structure, significantly lower cost than fully automated equipment, is flexible in movement, and is intuitive to operate, making it very suitable for small- to medium-scale welding operations or those requiring high flexibility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the pitch angle adjustment mechanism of this utility model.

[0017] Figure 3 for Figure 2 Enlarged view of part A.

[0018] In the diagram: 1-base, 2-upright pole, 3-height adjustment mechanism, 4-cantilever beam, 5-horizontal rotation mechanism, 6-electrode holder, 7-pitch angle adjustment mechanism, 8-V-block, 9-pressure belt, 10-pin hole, 11-clamp, 12-pin, 13-counterweight, 14-caster wheel, 15-push handle, 16-electrode, 71-first ear plate assembly, 72-second ear plate assembly, 73-adjustment hole, 74-angle adjustment bolt. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can more fully understand and use the present invention. It should be noted that the embodiments described are merely typical examples of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] like Figures 1 to 3 As shown, the auxiliary electrode welding device provided by this utility model has the core design concept of achieving precise positioning and reliable clamping of heavy electrodes in space through a mechanical structure with multi-degree-of-freedom adjustment function, thereby greatly facilitating welding operations.

[0021] Regarding the base and mobility system: The base 1, serving as the load-bearing foundation of the entire device, is typically constructed as a sturdy frame structure welded from steel plates and structural steel. Its dimensions and weight are calculated to provide sufficient foundation stability. To further enhance mobility and site adaptability, casters 14 with brakes are installed at the four corners of the base 1. Preferably, the casters 14 are heavy-duty industrial casters, with at least two wheels equipped with foot brakes. When the device moves to the designated workstation, applying the brakes prevents accidental movement and ensures operational safety. For easy pushing, a push handle 15 is fixedly installed at one end of the base 1. The push handle 15 can be made of simple bent steel pipe, with a non-slip rubber sleeve covering the surface to improve grip.

[0022] Regarding the stability enhancement design: Considering that the weight of the clamped electrode 16 may be very large, its center of gravity will deviate from the axis of the upright 2, thus generating an overturning moment. To effectively resist this moment and improve the overall anti-overturning capability, a counterweight mounting area is provided on the base 1 at the end away from the upright 2, and several counterweights 13 are fixed thereon with bolts. The number of counterweights 13 can be increased or decreased according to the typical weight of the clamped electrode in actual use. This modular counterweight design allows the device to flexibly adapt to different working conditions.

[0023] Regarding the column and height adjustment: The upright 2 is a key load-bearing and guiding component of the device. It is preferably made of thick-walled seamless steel pipe or solid round steel. Its lower end is securely welded to the sleeve of the base 1 via a flange or directly inserted to ensure verticality. The height adjustment mechanism 3 adopts a pin-type structure commonly used in the mechanical field. Specifically, it consists of a series of evenly distributed pin holes 10 machined at certain intervals, such as 100mm or 150mm, along the axial direction of the upright 2. A clamp 11 with an inner diameter slightly larger than the outer diameter of the upright 2 is fitted onto the upright 2. The clamp 11 is usually made of two semi-circular clamps fastened with bolts, allowing it to slide along the upright while providing sufficient friction for auxiliary fixation when locked. A through hole matching the diameter of the pin holes 10 is machined on the side wall of the clamp 11. When adjusting the height, the operator first loosens the fastening bolts of the clamp 11 and then pulls out the pin 12. At this time, the entire height adjustment mechanism 3, horizontal rotation mechanism 5, and cantilever beam 4 can slide up and down along the upright 2. Once the clamp 11 is slid to the desired height and the through hole on its side wall is aligned with the corresponding pin hole 10 on the upright 2, inserting the pin 12 will achieve mechanical interlocking. A chain can be attached to the end of the pin 12 to prevent loss.

[0024] Regarding horizontal rotation and cantilever: The horizontal rotation mechanism 5 is crucial for adjusting the horizontal angle of the electrode. In this embodiment, a slewing bearing is preferably used. The outer ring of this bearing is fixedly connected to the upper surface of the clamp 11 of the height adjustment mechanism 3 by bolts, while its inner ring is fixedly connected to the cantilever beam 4 near its end by bolts. The slewing bearing can withstand large axial forces, radial forces, and overturning moments. The cantilever beam 4, as a component for transmitting torque and extending the working radius, can be made of I-beams, H-beams, or large square steel tubes to ensure sufficient bending strength. By manually pushing the cantilever beam 4, the electrode holder 6 can be rotated 360° horizontally around the axis of the upright 2, easily adjusting the electrode to the appropriate welding angle.

[0025] Regarding pitch angle adjustment: The pitch angle adjustment mechanism 7 is used to adjust the elevation or depression angle of the electrode tip. This mechanism specifically includes a fixed part and a movable part. The fixed part is the first ear plate assembly 71, which consists of two parallel ear plates spaced a certain distance apart, welded and fixed to the distal end of the cantilever beam 4. The movable part is the second ear plate assembly 72, which consists of one or more ear plates, welded to the base of the electrode holder 6. The second ear plate assembly 72 is precisely inserted into the gap between the two ear plates of the first ear plate assembly 71, and is hinged via a hinge shaft. One end of the angle adjusting bolt 74 has a head, and the other end is locked with a lock nut. When adjusting the pitch angle, first loosen the nut; at this time, the electrode holder 6 can rotate around the hinge point within a certain angle range, for example, ±30°. After adjusting to the desired angle, retighten the nut; the clamping force of the bolt will then press the first ear plate assembly 71 and the second ear plate assembly 72 together, fixing the angle. For more precise angle control, angle scale lines can be engraved on the side of the ear plates.

[0026] Regarding the electrode holder: The electrode holder 6 is the actuator that directly contacts the electrode 16. Its core design element is the combination of the V-block 8 and the clamping band 9. The V-block 8 is typically machined from cast steel or high-strength steel plate, and its V-shaped opening angle is optimized to accommodate cylindrical electrodes within a certain diameter range. It also has a self-centering effect, making it easy to position the electrode axis. The clamping band 9 is a high-strength flexible band, such as a steel band or engineering plastic band. One end is fixed to the holder base, and the other end wraps around the rear of the electrode 16 and the V-block 8, connecting to a quick-release wrench (not shown separately in the figure). A standard ratchet-type binding device or tensioner can be used. By reciprocating the quick-release wrench, the clamping band 9 can be easily and quickly tightened, generating a strong binding force to firmly restrain the electrode 16 within the V-block 8. This clamping method provides a large contact area, uniform pressure distribution, and is less likely to damage the electrode surface. Furthermore, it is far more convenient to operate than traditional bolt-plate mechanisms.

[0027] Working principle: During operation, first ensure the brake on the device base is engaged. Loosen the locking nut and clamping band 9 of the pitch angle adjustment mechanism 7. Use hoisting equipment to lift the electrode 16 to be welded to the side of the device and place it horizontally into the groove of the V-block 8. Then, operate the quick-release wrench to tighten the clamping band 9, initially fixing the electrode. Subsequently, perform precise positioning: first, coarsely adjust the electrode height using the height adjustment mechanism 3, then, in conjunction with the horizontal rotation mechanism 5 and the pitch angle adjustment mechanism 7, finely adjust the position and orientation of the electrode end in three-dimensional space to achieve perfect alignment with the other electrode to be extended. After alignment, check all locking parts, including the pin 12, the slewing bearing, the pitch angle bolt 74, and the clamping band. If all are secure, welding can begin. After completion, loosen the components in reverse order and lift the electrode away.

[0028] In summary, this utility model, through its ingenious structural design, integrates multi-degree-of-freedom adjustment functions for height, horizontal angle, and pitch angle, and, in conjunction with a quick-clamping scheme using V-blocks and clamping straps, effectively solves problems such as difficult positioning, unstable fixation, and laborious operation during heavy electrode welding, thus possessing significant practical value.

[0029] The above embodiments are for illustrative purposes only and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model; therefore, all equivalent technical solutions also fall within the scope of this utility model, and the patent protection scope of this utility model should be defined by the claims.

Claims

1. An auxiliary electrode welding device, comprising a base (1) and an electrode (16), characterized in that, A vertical pole (2) is fixed to the base (1); Height adjustment mechanism (3), which is slidably sleeved on the upright (2); Cantilever beam (4); A horizontal rotation mechanism (5) is provided between the height adjustment mechanism (3) and the cantilever beam (4) to realize the horizontal rotation of the cantilever beam (4) around the axis of the upright (2); Electrode holder (6), which is mounted on the end of the cantilever beam (4) away from the height adjustment mechanism (3) via pitch angle adjustment mechanism (7); the electrode holder (6) includes a V-block (8) for supporting the electrode and a clamping band (9) for pressing the electrode (16) into the V-block.

2. The auxiliary electrode welding device according to claim 1, characterized in that, The height adjustment mechanism (3) is a pin-type adjustment mechanism, including several pin holes (10) on the upright (2), a clamp (11) sleeved on the upright (2), and a pin (12) that can be inserted into the clamp (11) and the pin holes (10).

3. The auxiliary electrode welding device according to claim 1, characterized in that... The horizontal rotation mechanism (5) is a slewing bearing; one ring of the slewing bearing is fixedly connected to the height adjustment mechanism (3), and the other ring is fixedly connected to one end of the cantilever beam (4).

4. The auxiliary electrode welding device according to claim 1, characterized in that, The pitch angle adjustment mechanism (7) includes a hinge connection consisting of a first ear plate group (71) and a second ear plate group (72); the first ear plate group (71) is fixedly connected to the end of the cantilever beam (4), and the second ear plate group (72) is fixedly connected to the base of the electrode holder (6); the second ear plate group (72) is inserted into the gap of the first ear plate group (71).

5. The auxiliary electrode welding device according to claim 4, characterized in that... The first ear plate group (71) and the second ear plate group (72) are provided with aligned arc-shaped adjustment holes (73), and the angle adjustment bolt (74) passes through the arc-shaped adjustment hole (73) and is locked by a nut.

6. The auxiliary electrode welding device according to claim 1, characterized in that... A quick-release wrench is installed on the compression band (9).

7. The auxiliary electrode welding device according to claim 1, characterized in that... Several counterweights (13) are provided on the base (1) at one end away from the upright (2).

8. An auxiliary electrode welding apparatus according to any one of claims 1-7, characterized in that, The base (1) is equipped with a universal wheel (14) with a braking function at the bottom, and a pusher (15) is installed at one end of the base (1).

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